diff --git a/automotive/remoteaccess/aidl_api/android.hardware.automotive.remoteaccess/current/android/hardware/automotive/remoteaccess/IRemoteAccess.aidl b/automotive/remoteaccess/aidl_api/android.hardware.automotive.remoteaccess/current/android/hardware/automotive/remoteaccess/IRemoteAccess.aidl
index ccfa22d..e6f4808 100644
--- a/automotive/remoteaccess/aidl_api/android.hardware.automotive.remoteaccess/current/android/hardware/automotive/remoteaccess/IRemoteAccess.aidl
+++ b/automotive/remoteaccess/aidl_api/android.hardware.automotive.remoteaccess/current/android/hardware/automotive/remoteaccess/IRemoteAccess.aidl
@@ -41,6 +41,7 @@
   void clearRemoteTaskCallback();
   void notifyApStateChange(in android.hardware.automotive.remoteaccess.ApState state);
   boolean isTaskScheduleSupported();
+  android.hardware.automotive.remoteaccess.TaskType[] getSupportedTaskTypesForScheduling();
   void scheduleTask(in android.hardware.automotive.remoteaccess.ScheduleInfo scheduleInfo);
   void unscheduleTask(String clientId, String scheduleId);
   void unscheduleAllTasks(String clientId);
diff --git a/automotive/remoteaccess/aidl_api/android.hardware.automotive.remoteaccess/current/android/hardware/automotive/remoteaccess/ScheduleInfo.aidl b/automotive/remoteaccess/aidl_api/android.hardware.automotive.remoteaccess/current/android/hardware/automotive/remoteaccess/ScheduleInfo.aidl
index a929e10..a5d81cf 100644
--- a/automotive/remoteaccess/aidl_api/android.hardware.automotive.remoteaccess/current/android/hardware/automotive/remoteaccess/ScheduleInfo.aidl
+++ b/automotive/remoteaccess/aidl_api/android.hardware.automotive.remoteaccess/current/android/hardware/automotive/remoteaccess/ScheduleInfo.aidl
@@ -36,6 +36,7 @@
 parcelable ScheduleInfo {
   String clientId;
   String scheduleId;
+  android.hardware.automotive.remoteaccess.TaskType taskType;
   byte[] taskData;
   int count;
   long startTimeInEpochSeconds;
diff --git a/automotive/remoteaccess/aidl_api/android.hardware.automotive.remoteaccess/current/android/hardware/automotive/remoteaccess/TaskType.aidl b/automotive/remoteaccess/aidl_api/android.hardware.automotive.remoteaccess/current/android/hardware/automotive/remoteaccess/TaskType.aidl
new file mode 100644
index 0000000..da70626
--- /dev/null
+++ b/automotive/remoteaccess/aidl_api/android.hardware.automotive.remoteaccess/current/android/hardware/automotive/remoteaccess/TaskType.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.automotive.remoteaccess;
+@Backing(type="int") @VintfStability
+enum TaskType {
+  CUSTOM = 0,
+  ENTER_GARAGE_MODE = 1,
+}
diff --git a/automotive/remoteaccess/android/hardware/automotive/remoteaccess/IRemoteAccess.aidl b/automotive/remoteaccess/android/hardware/automotive/remoteaccess/IRemoteAccess.aidl
index 4912651..9863ed7 100644
--- a/automotive/remoteaccess/android/hardware/automotive/remoteaccess/IRemoteAccess.aidl
+++ b/automotive/remoteaccess/android/hardware/automotive/remoteaccess/IRemoteAccess.aidl
@@ -19,12 +19,39 @@
 import android.hardware.automotive.remoteaccess.ApState;
 import android.hardware.automotive.remoteaccess.IRemoteTaskCallback;
 import android.hardware.automotive.remoteaccess.ScheduleInfo;
+import android.hardware.automotive.remoteaccess.TaskType;
 
 /**
- * Interface representing a remote wakeup client.
+ * The remote access HAL.
  *
- * A wakeup client is a binary outside Android framework that communicates with
- * a wakeup server and receives wake up command.
+ * <p>This HAL represents an external system that is always on even when Android
+ * is powered off. It is capable of wakeing up and notifying Android when a
+ * remote task arrives.
+ *
+ * <p>For cloud-based remote access, a cloud server will issue the remote task
+ * to the external system, which will then be forwarded to Android. The client
+ * is expected to call {@code setRemoteTaskCallback} to register the remote
+ * task callback and uses the information returned from {@code getVehicleId},
+ * {@code getWakeupServiceName} and {@code getProcessorId} to register with
+ * a remote server.
+ *
+ * <p>For serverless remote access, the remote task comes from the external
+ * system alone and no server is involved. The external system may support
+ * scheduling a remote task to executed later through {@code scheduleTask}.
+ *
+ * <p>For both cloud-based and serverless remote access, the ideal use case
+ * is to wake up Android when the vehicle is not in use and then shutdown
+ * Android after the task is complete. However, user may access the vehicle
+ * during this period, and Android must not be shutdown if this happens.
+ *
+ * <p>If this interface is implemented, then VHAL property
+ * {@code VEHICLE_IN_USE} must be supported to represent whether the vehicle is
+ * currently in use. Android will check this before sending the shutdown
+ * request.
+ *
+ * <p>The external power controller system must also check whether vehicle is
+ * in use upon receiving the shutdown request and makes sure that an
+ * user-unexpected shutdown must not happen.
  */
 @VintfStability
 interface IRemoteAccess {
@@ -110,6 +137,17 @@
     boolean isTaskScheduleSupported();
 
     /**
+     * Returns the supported task types for scheduling.
+     *
+     * <p>If task scheduling is not supported, this returns an empty array.
+     *
+     * <p>Otherwise, at least {@code TaskType.CUSTOM} must be supported.
+     *
+     * @return An array of supported task types.
+     */
+    TaskType[] getSupportedTaskTypesForScheduling();
+
+    /**
      * Schedules a task to be executed later even when the vehicle is off.
      *
      * <p>If {@link isTaskScheduleSupported} returns {@code false}. This is no-op.
@@ -127,6 +165,8 @@
      *
      * <p>Must return {@code EX_ILLEGAL_ARGUMENT} if a pending schedule with the same
      * {@code scheduleId} for this client exists.
+     *
+     * <p>Must return {@code EX_ILLEGAL_ARGUMENT} if the task type is not supported.
      */
     void scheduleTask(in ScheduleInfo scheduleInfo);
 
diff --git a/automotive/remoteaccess/android/hardware/automotive/remoteaccess/IRemoteTaskCallback.aidl b/automotive/remoteaccess/android/hardware/automotive/remoteaccess/IRemoteTaskCallback.aidl
index 2cd7a5d..ee6f900 100644
--- a/automotive/remoteaccess/android/hardware/automotive/remoteaccess/IRemoteTaskCallback.aidl
+++ b/automotive/remoteaccess/android/hardware/automotive/remoteaccess/IRemoteTaskCallback.aidl
@@ -22,7 +22,7 @@
 @VintfStability
 interface IRemoteTaskCallback {
     /**
-     * A callback that is called when a remote task is requested.
+     * A callback that is called when a custom type remote task is requested.
      *
      * The data is passed down from the remote server to the remote task client
      * which is an Android application, and is not interpreted/parsed by the
diff --git a/automotive/remoteaccess/android/hardware/automotive/remoteaccess/ScheduleInfo.aidl b/automotive/remoteaccess/android/hardware/automotive/remoteaccess/ScheduleInfo.aidl
index cf1437b..40fba6f 100644
--- a/automotive/remoteaccess/android/hardware/automotive/remoteaccess/ScheduleInfo.aidl
+++ b/automotive/remoteaccess/android/hardware/automotive/remoteaccess/ScheduleInfo.aidl
@@ -16,6 +16,8 @@
 
 package android.hardware.automotive.remoteaccess;
 
+import android.hardware.automotive.remoteaccess.TaskType;
+
 @VintfStability
 @JavaDerive(equals=true, toString=true)
 parcelable ScheduleInfo {
@@ -31,8 +33,14 @@
      */
     String scheduleId;
     /**
+     * The type for the task.
+     */
+    TaskType taskType;
+    /**
      * The opaque task data that will be sent back to the remote task client app when the task is
      * executed. It is not interpreted/parsed by the Android system.
+     *
+     * <p>This is only used for {@code TaskType.CUSTOM}.
      */
     byte[] taskData;
     /**
diff --git a/automotive/remoteaccess/android/hardware/automotive/remoteaccess/TaskType.aidl b/automotive/remoteaccess/android/hardware/automotive/remoteaccess/TaskType.aidl
new file mode 100644
index 0000000..761eb15
--- /dev/null
+++ b/automotive/remoteaccess/android/hardware/automotive/remoteaccess/TaskType.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES 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.remoteaccess;
+
+@VintfStability
+@Backing(type="int")
+enum TaskType {
+    /**
+     * A custom task that is opaque to anyone other than the remote task client app.
+     *
+     * <p>The opaque task data in the {@code ScheduleInfo} will be sent back to the app when the
+     * task is to be executed.
+     */
+    CUSTOM = 0,
+    /**
+     * Enters the garage mode if allowed.
+     *
+     * <p>Make the Android system enters garage mode if vehicle is currently not in use and
+     * entering garage mode is allowed (e.g. battery level is high enough).
+     *
+     * <p>This is based on best-effort and it is not guaranteed.
+     *
+     * <p>If allowed, the external system should set {@code AP_POWER_BOOTUP_REASON} to
+     * {@code SYSTEM_ENTER_GARAGE_MODE} and then boot up (or resume) the head unit.
+     */
+    ENTER_GARAGE_MODE = 1,
+}
diff --git a/automotive/remoteaccess/hal/default/include/RemoteAccessService.h b/automotive/remoteaccess/hal/default/include/RemoteAccessService.h
index 1fc4037..23b4ebe 100644
--- a/automotive/remoteaccess/hal/default/include/RemoteAccessService.h
+++ b/automotive/remoteaccess/hal/default/include/RemoteAccessService.h
@@ -81,6 +81,9 @@
 
     ndk::ScopedAStatus isTaskScheduleSupported(bool* out) override;
 
+    ndk::ScopedAStatus getSupportedTaskTypesForScheduling(
+            std::vector<aidl::android::hardware::automotive::remoteaccess::TaskType>* out) override;
+
     ndk::ScopedAStatus scheduleTask(
             const aidl::android::hardware::automotive::remoteaccess::ScheduleInfo& scheduleInfo)
             override;
diff --git a/automotive/remoteaccess/hal/default/src/RemoteAccessService.cpp b/automotive/remoteaccess/hal/default/src/RemoteAccessService.cpp
index 0944d86..5521134 100644
--- a/automotive/remoteaccess/hal/default/src/RemoteAccessService.cpp
+++ b/automotive/remoteaccess/hal/default/src/RemoteAccessService.cpp
@@ -40,6 +40,7 @@
 using ::aidl::android::hardware::automotive::remoteaccess::ApState;
 using ::aidl::android::hardware::automotive::remoteaccess::IRemoteTaskCallback;
 using ::aidl::android::hardware::automotive::remoteaccess::ScheduleInfo;
+using ::aidl::android::hardware::automotive::remoteaccess::TaskType;
 using ::aidl::android::hardware::automotive::vehicle::VehicleProperty;
 using ::android::base::Error;
 using ::android::base::ParseInt;
@@ -319,6 +320,13 @@
     return ScopedAStatus::ok();
 }
 
+ndk::ScopedAStatus RemoteAccessService::getSupportedTaskTypesForScheduling(
+        std::vector<TaskType>* out) {
+    // TODO(b/316233421): support ENTER_GARAGE_MODE type.
+    out->push_back(TaskType::CUSTOM);
+    return ScopedAStatus::ok();
+}
+
 ScopedAStatus RemoteAccessService::scheduleTask(const ScheduleInfo& scheduleInfo) {
     ClientContext context;
     ScheduleTaskRequest request = {};
diff --git a/automotive/remoteaccess/hal/default/test/RemoteAccessServiceUnitTest.cpp b/automotive/remoteaccess/hal/default/test/RemoteAccessServiceUnitTest.cpp
index c0038c2..4af0003 100644
--- a/automotive/remoteaccess/hal/default/test/RemoteAccessServiceUnitTest.cpp
+++ b/automotive/remoteaccess/hal/default/test/RemoteAccessServiceUnitTest.cpp
@@ -48,6 +48,7 @@
 using ::aidl::android::hardware::automotive::remoteaccess::ApState;
 using ::aidl::android::hardware::automotive::remoteaccess::BnRemoteTaskCallback;
 using ::aidl::android::hardware::automotive::remoteaccess::ScheduleInfo;
+using ::aidl::android::hardware::automotive::remoteaccess::TaskType;
 using ::aidl::android::hardware::automotive::vehicle::VehiclePropValue;
 
 using ::grpc::ClientAsyncReaderInterface;
@@ -61,6 +62,7 @@
 using ::ndk::ScopedAStatus;
 using ::testing::_;
 using ::testing::DoAll;
+using ::testing::ElementsAre;
 using ::testing::Return;
 using ::testing::SetArgPointee;
 
@@ -434,6 +436,14 @@
     EXPECT_TRUE(out);
 }
 
+TEST_F(RemoteAccessServiceUnitTest, TestGetSupportedTaskTypesForScheduling) {
+    std::vector<TaskType> out;
+    ScopedAStatus status = getService()->getSupportedTaskTypesForScheduling(&out);
+
+    EXPECT_TRUE(status.isOk());
+    EXPECT_THAT(out, ElementsAre(TaskType::CUSTOM));
+}
+
 TEST_F(RemoteAccessServiceUnitTest, TestScheduleTask) {
     ScheduleTaskRequest grpcRequest = {};
     EXPECT_CALL(*getGrpcWakeupClientStub(), ScheduleTask)
diff --git a/automotive/vehicle/2.0/default/common/src/VehicleUtils.cpp b/automotive/vehicle/2.0/default/common/src/VehicleUtils.cpp
index c16b29a..03a9df5 100644
--- a/automotive/vehicle/2.0/default/common/src/VehicleUtils.cpp
+++ b/automotive/vehicle/2.0/default/common/src/VehicleUtils.cpp
@@ -30,7 +30,7 @@
 
 std::unique_ptr<VehiclePropValue> createVehiclePropValue(
     VehiclePropertyType type, size_t vecSize) {
-    auto val = std::unique_ptr<VehiclePropValue>(new VehiclePropValue);
+    auto val = std::unique_ptr<VehiclePropValue>(new VehiclePropValue());
     switch (type) {
         case VehiclePropertyType::INT32:      // fall through
         case VehiclePropertyType::INT32_VEC:  // fall through
diff --git a/automotive/vehicle/aidl_property/aidl_api/android.hardware.automotive.vehicle.property/current/android/hardware/automotive/vehicle/VehicleApPowerBootupReason.aidl b/automotive/vehicle/aidl_property/aidl_api/android.hardware.automotive.vehicle.property/current/android/hardware/automotive/vehicle/VehicleApPowerBootupReason.aidl
index 9720aca..55af2ab 100644
--- a/automotive/vehicle/aidl_property/aidl_api/android.hardware.automotive.vehicle.property/current/android/hardware/automotive/vehicle/VehicleApPowerBootupReason.aidl
+++ b/automotive/vehicle/aidl_property/aidl_api/android.hardware.automotive.vehicle.property/current/android/hardware/automotive/vehicle/VehicleApPowerBootupReason.aidl
@@ -37,4 +37,5 @@
   USER_POWER_ON = 0,
   SYSTEM_USER_DETECTION = 1,
   SYSTEM_REMOTE_ACCESS = 2,
+  SYSTEM_ENTER_GARAGE_MODE = 3,
 }
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleApPowerBootupReason.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleApPowerBootupReason.aidl
index e325b38..8c8c2da 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleApPowerBootupReason.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleApPowerBootupReason.aidl
@@ -34,7 +34,24 @@
     SYSTEM_USER_DETECTION = 1,
     /**
      * Automatic power on to execute a remote task. This is triggered by
-     * receiving a wakeup message from TCU wakeup client.
+     * receiving a wakeup message from an external system in the vehicle.
      */
     SYSTEM_REMOTE_ACCESS = 2,
+    /**
+     * Automatic power on to enter garage mode. This is triggered by
+     * receiving a wakeup message from an external system in the vehicle.
+     *
+     * Note that this does not necessarily mean Android will enter
+     * the garage mode since user may enter the vehicle after this is set.
+     * The system will only enter garage mode if VEHICLE_IN_USE is not true
+     * upon check.
+     *
+     * To consider the Time-Of-Check-Time-Of-Use issue, there is a slight chance
+     * that the vehicle become in-use after car service does the VEHICLE_IN_USE
+     * check. The external power controller must also check whether the vehicle
+     * is in use upon receiving the SHUTDOWN_REQUEST, before sending out
+     * SHUTDOWN_PREPARE, to make sure the system does not enter garage mode or
+     * shutdown if the vehicle is currently in use.
+     */
+    SYSTEM_ENTER_GARAGE_MODE = 3,
 }
diff --git a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleProperty.aidl b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleProperty.aidl
index 88c8733..fb8f730 100644
--- a/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleProperty.aidl
+++ b/automotive/vehicle/aidl_property/android/hardware/automotive/vehicle/VehicleProperty.aidl
@@ -4732,12 +4732,22 @@
     /**
      * Request the head unit to be shutdown.
      *
+     * <p>This is required for executing a task when the head unit is powered off (remote task
+     * feature). After the head unit is powered-on to execute the task, the head unit should
+     * be shutdown. The head unit will send this message once the task is finished.
+     *
+     * <p>This is not for the case when a user wants to shutdown the head unit.
+     *
      * <p>This usually involves telling a separate system outside the head unit (e.g. a power
      * controller) to prepare shutting down the head unit.
      *
-     * <p>This does not mean the head unit will shutdown immediately.
+     * <p>Note that the external system must validate whether this request is valid by checking
+     * whether the vehicle is currently in use. If a user enters the vehicle after a
+     * SHUTDOWN_REQUEST is sent, then the system must ignore this request. It
+     * is recommended to store a VehicleInUse property in the power controller and exposes it
+     * through VEHICLE_IN_USE property. A shutdown request must be ignored if VehicleInUse is true.
      *
-     * <p>This means that another system will start sending a shutdown signal to the head unit,
+     * <p>If allowed, the external system will start sending a shutdown signal to the head unit,
      * which will cause VHAL to send SHUTDOWN_PREPARE message to Android. Android will then start
      * the shut down process by handling the message.
      *
diff --git a/bluetooth/audio/aidl/default/A2dpBits.h b/bluetooth/audio/aidl/default/A2dpBits.h
index f467c95..fb7587c 100644
--- a/bluetooth/audio/aidl/default/A2dpBits.h
+++ b/bluetooth/audio/aidl/default/A2dpBits.h
@@ -23,7 +23,8 @@
   uint8_t* data_;
 
  public:
-  A2dpBits(const std::vector<uint8_t>& vector) : cdata_(vector.data()) {}
+  A2dpBits(const std::vector<uint8_t>& vector)
+      : cdata_(vector.data()), data_(nullptr) {}
 
   A2dpBits(std::vector<uint8_t>& vector)
       : cdata_(vector.data()), data_(vector.data()) {}
diff --git a/power/aidl/Android.bp b/power/aidl/Android.bp
index 7643926..8900fb8 100644
--- a/power/aidl/Android.bp
+++ b/power/aidl/Android.bp
@@ -28,11 +28,20 @@
         "android/hardware/power/*.aidl",
     ],
     stability: "vintf",
+    imports: [
+        "android.hardware.common.fmq-V1",
+        "android.hardware.common-V2",
+    ],
     backend: {
         cpp: {
+            enabled: false,
+        },
+        ndk: {
             enabled: true,
         },
         java: {
+            sdk_version: "module_current",
+            enabled: true,
             platform_apis: true,
         },
     },
diff --git a/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/ChannelConfig.aidl b/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/ChannelConfig.aidl
new file mode 100644
index 0000000..d3caca4
--- /dev/null
+++ b/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/ChannelConfig.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.power;
+@VintfStability
+parcelable ChannelConfig {
+  android.hardware.common.fmq.MQDescriptor<android.hardware.power.ChannelMessage,android.hardware.common.fmq.SynchronizedReadWrite> channelDescriptor;
+  @nullable android.hardware.common.fmq.MQDescriptor<byte,android.hardware.common.fmq.SynchronizedReadWrite> eventFlagDescriptor;
+  int readFlagBitmask;
+  int writeFlagBitmask;
+}
diff --git a/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/ChannelMessage.aidl b/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/ChannelMessage.aidl
new file mode 100644
index 0000000..25f01c0
--- /dev/null
+++ b/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/ChannelMessage.aidl
@@ -0,0 +1,52 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.power;
+@FixedSize @VintfStability
+parcelable ChannelMessage {
+  int sessionID;
+  android.hardware.power.ChannelMessage.ChannelMessageContents data;
+  @FixedSize @VintfStability
+  union ChannelMessageContents {
+    int[20] tids = {(-1) /* -1 */, (-1) /* -1 */, (-1) /* -1 */, (-1) /* -1 */, (-1) /* -1 */, (-1) /* -1 */, (-1) /* -1 */, (-1) /* -1 */, (-1) /* -1 */, (-1) /* -1 */, (-1) /* -1 */, (-1) /* -1 */, (-1) /* -1 */, (-1) /* -1 */, (-1) /* -1 */, (-1) /* -1 */, (-1) /* -1 */, (-1) /* -1 */, (-1) /* -1 */, (-1) /* -1 */};
+    long targetDuration;
+    android.hardware.power.SessionHint hint;
+    android.hardware.power.ChannelMessage.ChannelMessageContents.SessionModeSetter mode;
+    android.hardware.power.WorkDurationFixedV1 workDuration;
+    @FixedSize @VintfStability
+    parcelable SessionModeSetter {
+      android.hardware.power.SessionMode modeInt;
+      boolean enabled;
+    }
+  }
+}
diff --git a/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/IPower.aidl b/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/IPower.aidl
index ae03313..8acdaf2 100644
--- a/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/IPower.aidl
+++ b/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/IPower.aidl
@@ -40,4 +40,7 @@
   boolean isBoostSupported(in android.hardware.power.Boost type);
   android.hardware.power.IPowerHintSession createHintSession(in int tgid, in int uid, in int[] threadIds, in long durationNanos);
   long getHintSessionPreferredRate();
+  android.hardware.power.IPowerHintSession createHintSessionWithConfig(in int tgid, in int uid, in int[] threadIds, in long durationNanos, in android.hardware.power.SessionTag tag, out android.hardware.power.SessionConfig config);
+  android.hardware.power.ChannelConfig getSessionChannel(in int tgid, in int uid);
+  oneway void closeSessionChannel(in int tgid, in int uid);
 }
diff --git a/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/IPowerHintSession.aidl b/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/IPowerHintSession.aidl
index 6bc663e..010f815 100644
--- a/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/IPowerHintSession.aidl
+++ b/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/IPowerHintSession.aidl
@@ -42,4 +42,5 @@
   oneway void sendHint(android.hardware.power.SessionHint hint);
   void setThreads(in int[] threadIds);
   oneway void setMode(android.hardware.power.SessionMode type, boolean enabled);
+  android.hardware.power.SessionConfig getSessionConfig();
 }
diff --git a/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/SessionConfig.aidl b/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/SessionConfig.aidl
new file mode 100644
index 0000000..b03cfb2
--- /dev/null
+++ b/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/SessionConfig.aidl
@@ -0,0 +1,38 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.power;
+@VintfStability
+parcelable SessionConfig {
+  long id;
+}
diff --git a/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/SessionTag.aidl b/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/SessionTag.aidl
new file mode 100644
index 0000000..80848a4
--- /dev/null
+++ b/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/SessionTag.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.power;
+@Backing(type="int") @VintfStability
+enum SessionTag {
+  OTHER,
+  SURFACEFLINGER,
+  HWUI,
+  GAME,
+}
diff --git a/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/WorkDurationFixedV1.aidl b/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/WorkDurationFixedV1.aidl
new file mode 100644
index 0000000..8cd246d
--- /dev/null
+++ b/power/aidl/aidl_api/android.hardware.power/current/android/hardware/power/WorkDurationFixedV1.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.power;
+@FixedSize @VintfStability
+parcelable WorkDurationFixedV1 {
+  long timeStampNanos;
+  long durationNanos;
+  long workPeriodStartTimestampNanos;
+  long cpuDurationNanos;
+  long gpuDurationNanos;
+}
diff --git a/power/aidl/android/hardware/power/ChannelConfig.aidl b/power/aidl/android/hardware/power/ChannelConfig.aidl
new file mode 100644
index 0000000..4da292e
--- /dev/null
+++ b/power/aidl/android/hardware/power/ChannelConfig.aidl
@@ -0,0 +1,52 @@
+
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES 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.power;
+
+import android.hardware.common.fmq.MQDescriptor;
+import android.hardware.common.fmq.SynchronizedReadWrite;
+import android.hardware.power.ChannelMessage;
+
+@VintfStability
+parcelable ChannelConfig {
+    /**
+     * The message queue descriptor that provides the information necessary for
+     * a client to write to this channel.
+     */
+    MQDescriptor<ChannelMessage, SynchronizedReadWrite> channelDescriptor;
+
+    /**
+     * A message queue descriptor used to pass an optional event flag to clients,
+     * used to synchronize multiple message queues using the same flag. If not
+     * defined, the flag from the channelDescriptor should be used.
+     */
+    @nullable MQDescriptor<byte, SynchronizedReadWrite> eventFlagDescriptor;
+
+    /**
+     * The read flag bitmask to be used with the event flag, specifying the
+     * bits used by this channel to mark that the buffer has been read from.
+     * If set to 0, the default bitmask will be used.
+     */
+    int readFlagBitmask;
+
+    /**
+     * The write flag bitmask to be used with the event flag, specifying the
+     * bits used by this channel to mark that the buffer has been written to.
+     * If set to 0, the default bitmask will be used.
+     */
+    int writeFlagBitmask;
+}
diff --git a/power/aidl/android/hardware/power/ChannelMessage.aidl b/power/aidl/android/hardware/power/ChannelMessage.aidl
new file mode 100644
index 0000000..4747d90
--- /dev/null
+++ b/power/aidl/android/hardware/power/ChannelMessage.aidl
@@ -0,0 +1,94 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES 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.power;
+
+import android.hardware.power.SessionHint;
+import android.hardware.power.SessionMode;
+import android.hardware.power.WorkDurationFixedV1;
+
+/**
+ * Data sent through the FMQ must follow this structure. It's important to note
+ * that such data may come from the app itself, so the HAL must validate all
+ * data received through this interface, and reject any calls not guaranteed to be
+ * valid. Each of the types defined in the inner union maps to an equivalent call
+ * on IPowerHintSession, and is merely being used to expedite the use of that API
+ * in cases where it is safe to bypass the HintManagerService.
+ */
+@FixedSize
+@VintfStability
+parcelable ChannelMessage {
+    /**
+     * The ID of the specific session sending the hint, used to enable a single
+     * channel to be multiplexed across all sessions in a single process.
+     */
+    int sessionID;
+
+    /**
+     * A union defining the different messages that can be passed through the
+     * channel. Each type corresponds to a different call in IPowerHintSession.
+     */
+    ChannelMessageContents data;
+
+    @FixedSize
+    @VintfStability
+    union ChannelMessageContents {
+        /**
+         * List of TIDs for this session to change to. Can be used in cases
+         * where HintManagerService is not needed to validate the TIDs, such as
+         * when all TIDs directly belong to the process that owns the session.
+         */
+        int[20] tids = {
+                -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1, -1};
+
+        /**
+         * Setting this field will update the session’s target duration, equivalent
+         * to calling updateTargetWorkDuration(targetDuration).
+         */
+        long targetDuration;
+
+        /**
+         * Setting this field will send a hint to the session, equivalent to
+         * calling sendHint(hint).
+         */
+        SessionHint hint;
+
+        /**
+         * Setting this field will send a hint to the session, equivalent to
+         * calling setMode(mode.modeInt, mode.enabled).
+         */
+        SessionModeSetter mode;
+
+        /**
+         * Setting this field will update the session’s actual duration, equivalent
+         * to calling reportActualWorkDuration([workDuration]). Only one duration
+         * can be passed at a time; this API expects durations to be reported
+         * immediately each frame, since the overhead of this call is much lower.
+         */
+        WorkDurationFixedV1 workDuration;
+
+        /**
+         * This structure is used to fit both the mode and the state within one
+         * entry in the union.
+         */
+        @FixedSize
+        @VintfStability
+        parcelable SessionModeSetter {
+            SessionMode modeInt;
+            boolean enabled;
+        }
+    }
+}
diff --git a/power/aidl/android/hardware/power/IPower.aidl b/power/aidl/android/hardware/power/IPower.aidl
index ee8e5a3..e25714f 100644
--- a/power/aidl/android/hardware/power/IPower.aidl
+++ b/power/aidl/android/hardware/power/IPower.aidl
@@ -17,8 +17,11 @@
 package android.hardware.power;
 
 import android.hardware.power.Boost;
+import android.hardware.power.ChannelConfig;
 import android.hardware.power.IPowerHintSession;
 import android.hardware.power.Mode;
+import android.hardware.power.SessionConfig;
+import android.hardware.power.SessionTag;
 
 @VintfStability
 interface IPower {
@@ -103,4 +106,42 @@
      *         EX_UNSUPPORTED_OPERATION if hint session is not supported.
      */
     long getHintSessionPreferredRate();
+
+    /**
+     * A version of createHintSession that returns an additional bundle of session
+     * data, useful to help the session immediately communicate via an FMQ channel
+     * for more efficient updates.
+     *
+     * @return  the new session if it is supported on this device, otherwise return
+     *          with EX_UNSUPPORTED_OPERATION error if hint session is not
+     *          supported on this device.
+     * @param   tgid The TGID to be associated with this session.
+     * @param   uid The UID to be associated with this session.
+     * @param   threadIds The list of threads to be associated with this session.
+     * @param   durationNanos The desired duration in nanoseconds for this session.
+     * @param   config Extra session metadata to be returned to the caller.
+     */
+    IPowerHintSession createHintSessionWithConfig(in int tgid, in int uid, in int[] threadIds,
+            in long durationNanos, in SessionTag tag, out SessionConfig config);
+
+    /**
+     * Used to get an FMQ channel, per-process. The channel should be unique to
+     * that process, and should return the same ChannelConfig if called multiple
+     * times from that same process.
+     *
+     * @return  the channel config if hint sessions are supported on this device,
+     *          otherwise return with EX_UNSUPPORTED_OPERATION.
+     * @param   tgid The TGID to be associated with this channel.
+     * @param   uid The UID to be associated with this channel.
+     */
+    ChannelConfig getSessionChannel(in int tgid, in int uid);
+
+    /**
+     * Used to close a channel once it is no longer needed by a process, or that
+     * process dies.
+     *
+     * @param   tgid The TGID to be associated with this channel.
+     * @param   uid The UID to be associated with this channel.
+     */
+    oneway void closeSessionChannel(in int tgid, in int uid);
 }
diff --git a/power/aidl/android/hardware/power/IPowerHintSession.aidl b/power/aidl/android/hardware/power/IPowerHintSession.aidl
index 62263c8..9dd251f 100644
--- a/power/aidl/android/hardware/power/IPowerHintSession.aidl
+++ b/power/aidl/android/hardware/power/IPowerHintSession.aidl
@@ -16,6 +16,7 @@
 
 package android.hardware.power;
 
+import android.hardware.power.SessionConfig;
 import android.hardware.power.SessionHint;
 import android.hardware.power.SessionMode;
 import android.hardware.power.WorkDuration;
@@ -91,4 +92,11 @@
      * @param enabled True to enable the mode, false to disable it
      */
     oneway void setMode(SessionMode type, boolean enabled);
+
+    /**
+     * This method provides direct access to a session's config data.
+     *
+     * @return  the config data for this session
+     */
+    SessionConfig getSessionConfig();
 }
diff --git a/power/aidl/android/hardware/power/SessionConfig.aidl b/power/aidl/android/hardware/power/SessionConfig.aidl
new file mode 100644
index 0000000..93dc9a2
--- /dev/null
+++ b/power/aidl/android/hardware/power/SessionConfig.aidl
@@ -0,0 +1,30 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES 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.power;
+
+/**
+ * Additional session to be passed to the hint session during creation, or acquired
+ * after creation from the session directly.
+ */
+@VintfStability
+parcelable SessionConfig {
+    /**
+     * The session's unique ID, used to identify the session for debugging and
+     * for multiplexing on the per-process FMQ channel.
+     */
+    long id;
+}
diff --git a/power/aidl/android/hardware/power/SessionTag.aidl b/power/aidl/android/hardware/power/SessionTag.aidl
new file mode 100644
index 0000000..c1d48e4
--- /dev/null
+++ b/power/aidl/android/hardware/power/SessionTag.aidl
@@ -0,0 +1,41 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES 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.power;
+
+@VintfStability
+@Backing(type="int")
+enum SessionTag {
+    /**
+     * This tag is used to mark uncategorized hint sessions.
+     */
+    OTHER,
+
+    /**
+     * This tag is used to mark the SurfaceFlinger hint session.
+     */
+    SURFACEFLINGER,
+
+    /**
+     * This tag is used to mark HWUI hint sessions.
+     */
+    HWUI,
+
+    /**
+     * This tag is used to mark Game hint sessions.
+     */
+    GAME,
+}
diff --git a/power/aidl/android/hardware/power/WorkDurationFixedV1.aidl b/power/aidl/android/hardware/power/WorkDurationFixedV1.aidl
new file mode 100644
index 0000000..2d202ff
--- /dev/null
+++ b/power/aidl/android/hardware/power/WorkDurationFixedV1.aidl
@@ -0,0 +1,53 @@
+/*
+ * Copyright (C) 2023 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES 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.power;
+
+@FixedSize
+@VintfStability
+parcelable WorkDurationFixedV1 {
+    /**
+     * Timestamp in nanoseconds based on CLOCK_MONOTONIC when the duration
+     * sample was measured.
+     */
+    long timeStampNanos;
+
+    /**
+     * Total work duration in nanoseconds.
+     */
+    long durationNanos;
+
+    /**
+     * Timestamp in nanoseconds based on CLOCK_MONOTONIC when the work starts.
+     * The work period start timestamp could be zero if the call is from
+     * the legacy SDK/NDK reportActualWorkDuration API.
+     */
+    long workPeriodStartTimestampNanos;
+
+    /**
+     * CPU work duration in nanoseconds.
+     * The CPU work duration could be the same as the total work duration if
+     * the call is from the legacy SDK/NDK reportActualWorkDuration API.
+     */
+    long cpuDurationNanos;
+
+    /**
+     * GPU work duration in nanoseconds.
+     * The GPU work duration could be zero if the call is from the legacy
+     * SDK/NDK reportActualWorkDuration API.
+     */
+    long gpuDurationNanos;
+}
diff --git a/power/aidl/default/Android.bp b/power/aidl/default/Android.bp
index e3af179..b4ccc7d 100644
--- a/power/aidl/default/Android.bp
+++ b/power/aidl/default/Android.bp
@@ -29,8 +29,12 @@
     vintf_fragments: [":android.hardware.power.xml"],
     vendor: true,
     shared_libs: [
+        "android.hardware.common-V2-ndk",
+        "android.hardware.common.fmq-V1-ndk",
         "libbase",
         "libbinder_ndk",
+        "libcutils",
+        "libfmq",
     ],
     srcs: [
         "main.cpp",
diff --git a/power/aidl/default/Power.cpp b/power/aidl/default/Power.cpp
index 8fe370c..8f15663 100644
--- a/power/aidl/default/Power.cpp
+++ b/power/aidl/default/Power.cpp
@@ -18,6 +18,8 @@
 #include "PowerHintSession.h"
 
 #include <android-base/logging.h>
+#include <fmq/AidlMessageQueue.h>
+#include <fmq/EventFlag.h>
 
 namespace aidl {
 namespace android {
@@ -27,6 +29,10 @@
 namespace example {
 
 using namespace std::chrono_literals;
+using ::aidl::android::hardware::common::fmq::MQDescriptor;
+using ::aidl::android::hardware::common::fmq::SynchronizedReadWrite;
+using ::aidl::android::hardware::power::ChannelMessage;
+using ::android::AidlMessageQueue;
 
 using ndk::ScopedAStatus;
 
@@ -70,6 +76,27 @@
     return ScopedAStatus::ok();
 }
 
+ndk::ScopedAStatus Power::createHintSessionWithConfig(
+        int32_t tgid, int32_t uid, const std::vector<int32_t>& threadIds, int64_t durationNanos,
+        SessionTag, SessionConfig* config, std::shared_ptr<IPowerHintSession>* _aidl_return) {
+    auto out = createHintSession(tgid, uid, threadIds, durationNanos, _aidl_return);
+    static_cast<PowerHintSession*>(_aidl_return->get())->getSessionConfig(config);
+    return out;
+}
+
+ndk::ScopedAStatus Power::getSessionChannel(int32_t, int32_t, ChannelConfig* _aidl_return) {
+    static AidlMessageQueue<ChannelMessage, SynchronizedReadWrite> stubQueue{1, true};
+    _aidl_return->channelDescriptor = stubQueue.dupeDesc();
+    _aidl_return->readFlagBitmask = 0;
+    _aidl_return->writeFlagBitmask = 0;
+    _aidl_return->eventFlagDescriptor = std::nullopt;
+    return ndk::ScopedAStatus::ok();
+}
+
+ndk::ScopedAStatus Power::closeSessionChannel(int32_t, int32_t) {
+    return ndk::ScopedAStatus::ok();
+}
+
 ScopedAStatus Power::getHintSessionPreferredRate(int64_t* outNanoseconds) {
     *outNanoseconds = std::chrono::nanoseconds(1ms).count();
     return ScopedAStatus::ok();
diff --git a/power/aidl/default/Power.h b/power/aidl/default/Power.h
index 7f8405e..baabaa7 100644
--- a/power/aidl/default/Power.h
+++ b/power/aidl/default/Power.h
@@ -17,6 +17,7 @@
 #pragma once
 
 #include <aidl/android/hardware/power/BnPower.h>
+#include "aidl/android/hardware/power/SessionTag.h"
 
 namespace aidl {
 namespace android {
@@ -35,7 +36,14 @@
                                          const std::vector<int32_t>& threadIds,
                                          int64_t durationNanos,
                                          std::shared_ptr<IPowerHintSession>* _aidl_return) override;
+    ndk::ScopedAStatus createHintSessionWithConfig(
+            int32_t tgid, int32_t uid, const std::vector<int32_t>& threadIds, int64_t durationNanos,
+            SessionTag tag, SessionConfig* config,
+            std::shared_ptr<IPowerHintSession>* _aidl_return) override;
     ndk::ScopedAStatus getHintSessionPreferredRate(int64_t* outNanoseconds) override;
+    ndk::ScopedAStatus getSessionChannel(int32_t tgid, int32_t uid,
+                                         ChannelConfig* _aidl_return) override;
+    ndk::ScopedAStatus closeSessionChannel(int32_t tgid, int32_t uid) override;
 
   private:
     std::vector<std::shared_ptr<IPowerHintSession>> mPowerHintSessions;
diff --git a/power/aidl/default/PowerHintSession.cpp b/power/aidl/default/PowerHintSession.cpp
index 452e435..847a42e 100644
--- a/power/aidl/default/PowerHintSession.cpp
+++ b/power/aidl/default/PowerHintSession.cpp
@@ -17,6 +17,7 @@
 #include "PowerHintSession.h"
 
 #include <android-base/logging.h>
+#include "android/binder_auto_utils.h"
 
 namespace aidl::android::hardware::power::impl::example {
 
@@ -63,4 +64,9 @@
     return ScopedAStatus::ok();
 }
 
+ScopedAStatus PowerHintSession::getSessionConfig(SessionConfig* _aidl_return) {
+    _aidl_return->id = 1;
+    return ScopedAStatus::ok();
+}
+
 }  // namespace aidl::android::hardware::power::impl::example
diff --git a/power/aidl/default/PowerHintSession.h b/power/aidl/default/PowerHintSession.h
index b488bf1..2ed5588 100644
--- a/power/aidl/default/PowerHintSession.h
+++ b/power/aidl/default/PowerHintSession.h
@@ -35,6 +35,7 @@
     ndk::ScopedAStatus sendHint(SessionHint hint) override;
     ndk::ScopedAStatus setThreads(const std::vector<int32_t>& threadIds) override;
     ndk::ScopedAStatus setMode(SessionMode mode, bool enabled) override;
+    ndk::ScopedAStatus getSessionConfig(SessionConfig* _aidl_return) override;
 };
 
 }  // namespace aidl::android::hardware::power::impl::example
diff --git a/power/aidl/vts/Android.bp b/power/aidl/vts/Android.bp
index eb98b8b..c9285f4 100644
--- a/power/aidl/vts/Android.bp
+++ b/power/aidl/vts/Android.bp
@@ -31,6 +31,11 @@
     srcs: ["VtsHalPowerTargetTest.cpp"],
     shared_libs: [
         "libbinder_ndk",
+        "libfmq",
+    ],
+    static_libs: [
+        "android.hardware.common.fmq-V1-ndk",
+        "android.hardware.common-V2-ndk",
     ],
     test_suites: [
         "general-tests",
diff --git a/power/aidl/vts/VtsHalPowerTargetTest.cpp b/power/aidl/vts/VtsHalPowerTargetTest.cpp
index 96995a0..11d44b8 100644
--- a/power/aidl/vts/VtsHalPowerTargetTest.cpp
+++ b/power/aidl/vts/VtsHalPowerTargetTest.cpp
@@ -24,12 +24,22 @@
 #include <android/binder_process.h>
 #include <android/binder_status.h>
 
+#include <fmq/AidlMessageQueue.h>
+#include <fmq/EventFlag.h>
+
 #include <unistd.h>
+#include <cstdint>
+#include "aidl/android/hardware/common/fmq/SynchronizedReadWrite.h"
+#include "fmq/EventFlag.h"
 
 namespace aidl::android::hardware::power {
 namespace {
 
+using ::aidl::android::hardware::common::fmq::SynchronizedReadWrite;
+using ::android::AidlMessageQueue;
 using android::hardware::power::Boost;
+using android::hardware::power::ChannelConfig;
+using android::hardware::power::ChannelMessage;
 using android::hardware::power::IPower;
 using android::hardware::power::IPowerHintSession;
 using android::hardware::power::Mode;
@@ -37,6 +47,8 @@
 using android::hardware::power::SessionMode;
 using android::hardware::power::WorkDuration;
 
+using SessionMessageQueue = AidlMessageQueue<ChannelMessage, SynchronizedReadWrite>;
+
 const std::vector<Boost> kBoosts{ndk::enum_range<Boost>().begin(), ndk::enum_range<Boost>().end()};
 
 const std::vector<Mode> kModes{ndk::enum_range<Mode>().begin(), ndk::enum_range<Mode>().end()};
@@ -190,6 +202,31 @@
     ASSERT_GE(rate, 1000000);
 }
 
+TEST_P(PowerAidl, createHintSessionWithConfig) {
+    if (mServiceVersion < 5) {
+        GTEST_SKIP() << "DEVICE not launching with Power V5 and beyond.";
+    }
+    std::shared_ptr<IPowerHintSession> session;
+    SessionConfig config;
+
+    auto status = power->createHintSessionWithConfig(getpid(), getuid(), kSelfTids, 16666666L,
+                                                     SessionTag::OTHER, &config, &session);
+    ASSERT_TRUE(status.isOk());
+    ASSERT_NE(nullptr, session);
+}
+
+TEST_P(PowerAidl, getAndCloseSessionChannel) {
+    if (mServiceVersion < 5) {
+        GTEST_SKIP() << "DEVICE not launching with Power V5 and beyond.";
+    }
+    ChannelConfig config;
+    auto status = power->getSessionChannel(getpid(), getuid(), &config);
+    ASSERT_TRUE(status.isOk());
+    auto messageQueue = std::make_shared<SessionMessageQueue>(config.channelDescriptor, true);
+    ASSERT_TRUE(messageQueue->isValid());
+    ASSERT_TRUE(power->closeSessionChannel(getpid(), getuid()).isOk());
+}
+
 TEST_P(HintSessionAidl, createAndCloseHintSession) {
     ASSERT_TRUE(mSession->pause().isOk());
     ASSERT_TRUE(mSession->resume().isOk());
@@ -252,6 +289,14 @@
     }
 }
 
+TEST_P(HintSessionAidl, getSessionConfig) {
+    if (mServiceVersion < 5) {
+        GTEST_SKIP() << "DEVICE not launching with Power V5 and beyond.";
+    }
+    SessionConfig config;
+    ASSERT_TRUE(mSession->getSessionConfig(&config).isOk());
+}
+
 // FIXED_PERFORMANCE mode is required for all devices which ship on Android 11
 // or later
 TEST_P(PowerAidl, hasFixedPerformance) {
diff --git a/radio/aidl/aidl_api/android.hardware.radio.config/current/android/hardware/radio/config/IRadioConfig.aidl b/radio/aidl/aidl_api/android.hardware.radio.config/current/android/hardware/radio/config/IRadioConfig.aidl
index 0f5e7e4..bc1c292 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.config/current/android/hardware/radio/config/IRadioConfig.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.config/current/android/hardware/radio/config/IRadioConfig.aidl
@@ -51,4 +51,5 @@
   oneway void setPreferredDataModem(in int serial, in byte modemId);
   oneway void setResponseFunctions(in android.hardware.radio.config.IRadioConfigResponse radioConfigResponse, in android.hardware.radio.config.IRadioConfigIndication radioConfigIndication);
   oneway void setSimSlotsMapping(in int serial, in android.hardware.radio.config.SlotPortMapping[] slotMap);
+  oneway void getSimultaneousCallingSupport(in int serial);
 }
diff --git a/radio/aidl/aidl_api/android.hardware.radio.config/current/android/hardware/radio/config/IRadioConfigIndication.aidl b/radio/aidl/aidl_api/android.hardware.radio.config/current/android/hardware/radio/config/IRadioConfigIndication.aidl
index 9189f90..f786373 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.config/current/android/hardware/radio/config/IRadioConfigIndication.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.config/current/android/hardware/radio/config/IRadioConfigIndication.aidl
@@ -36,4 +36,5 @@
 @VintfStability
 interface IRadioConfigIndication {
   oneway void simSlotsStatusChanged(in android.hardware.radio.RadioIndicationType type, in android.hardware.radio.config.SimSlotStatus[] slotStatus);
+  oneway void onSimultaneousCallingSupportChanged(in int[] enabledLogicalSlots);
 }
diff --git a/radio/aidl/aidl_api/android.hardware.radio.config/current/android/hardware/radio/config/IRadioConfigResponse.aidl b/radio/aidl/aidl_api/android.hardware.radio.config/current/android/hardware/radio/config/IRadioConfigResponse.aidl
index 348aa34..6ff7bd0 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.config/current/android/hardware/radio/config/IRadioConfigResponse.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.config/current/android/hardware/radio/config/IRadioConfigResponse.aidl
@@ -42,4 +42,5 @@
   oneway void setNumOfLiveModemsResponse(in android.hardware.radio.RadioResponseInfo info);
   oneway void setPreferredDataModemResponse(in android.hardware.radio.RadioResponseInfo info);
   oneway void setSimSlotsMappingResponse(in android.hardware.radio.RadioResponseInfo info);
+  oneway void getSimultaneousCallingSupportResponse(in android.hardware.radio.RadioResponseInfo info, in int[] enabledLogicalSlots);
 }
diff --git a/radio/aidl/aidl_api/android.hardware.radio.config/current/android/hardware/radio/config/PhoneCapability.aidl b/radio/aidl/aidl_api/android.hardware.radio.config/current/android/hardware/radio/config/PhoneCapability.aidl
index 3648866..2c66abd 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.config/current/android/hardware/radio/config/PhoneCapability.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.config/current/android/hardware/radio/config/PhoneCapability.aidl
@@ -39,4 +39,6 @@
   byte maxActiveInternetData;
   boolean isInternetLingeringSupported;
   byte[] logicalModemIds;
+  byte maxActiveVoice = UNKNOWN /* -1 */;
+  const byte UNKNOWN = (-1) /* -1 */;
 }
diff --git a/radio/aidl/aidl_api/android.hardware.radio.ims/current/android/hardware/radio/ims/SuggestedAction.aidl b/radio/aidl/aidl_api/android.hardware.radio.ims/current/android/hardware/radio/ims/SuggestedAction.aidl
index 6dbf09d..9846006 100644
--- a/radio/aidl/aidl_api/android.hardware.radio.ims/current/android/hardware/radio/ims/SuggestedAction.aidl
+++ b/radio/aidl/aidl_api/android.hardware.radio.ims/current/android/hardware/radio/ims/SuggestedAction.aidl
@@ -39,5 +39,5 @@
   TRIGGER_PLMN_BLOCK,
   TRIGGER_PLMN_BLOCK_WITH_TIMEOUT,
   TRIGGER_RAT_BLOCK,
-  TRIGGER_CLEAR_RAT_BLOCK,
+  TRIGGER_CLEAR_RAT_BLOCKS,
 }
diff --git a/radio/aidl/android/hardware/radio/config/IRadioConfig.aidl b/radio/aidl/android/hardware/radio/config/IRadioConfig.aidl
index 9058d9d..8f4dff4 100644
--- a/radio/aidl/android/hardware/radio/config/IRadioConfig.aidl
+++ b/radio/aidl/android/hardware/radio/config/IRadioConfig.aidl
@@ -191,4 +191,20 @@
      * This is available when android.hardware.telephony.subscription is defined.
      */
     void setSimSlotsMapping(in int serial, in SlotPortMapping[] slotMap);
+
+    /**
+     * Get the set of logical slots where simultaneous cellular calling is currently possible. This
+     * does not include simultaneous calling availability over other non-cellular transports, such
+     * as IWLAN.
+     *
+     * Get the set of slots that currently support simultaneous cellular calling. When a new
+     * cellular call is placed/received, if another slot is active and handing a call, both the
+     * active slot and proposed slot must be in this list in order to support simultaneous cellular
+     * calling for both of those slots.
+     *
+     * @param serial Serial number of request
+     *
+     * This is available when android.hardware.telephony is defined.
+     */
+    void getSimultaneousCallingSupport(in int serial);
 }
diff --git a/radio/aidl/android/hardware/radio/config/IRadioConfigIndication.aidl b/radio/aidl/android/hardware/radio/config/IRadioConfigIndication.aidl
index ed2366b..9eacb8e 100644
--- a/radio/aidl/android/hardware/radio/config/IRadioConfigIndication.aidl
+++ b/radio/aidl/android/hardware/radio/config/IRadioConfigIndication.aidl
@@ -37,4 +37,15 @@
      */
     void simSlotsStatusChanged(
             in android.hardware.radio.RadioIndicationType type, in SimSlotStatus[] slotStatus);
+
+    /**
+     * The logical slots supporting simultaneous cellular calling has changed.
+     *
+     * @param enabledLogicalSlots The slots that have simultaneous cellular calling enabled. If
+     * there is a call active on logical slot X, then a simultaneous cellular call is only possible
+     * on logical slot Y if BOTH slot X and slot Y are in enabledLogicalSlots. If simultaneous
+     * cellular calling is not currently supported, the expected value of enabledLogicalSLots is an
+     * empty int array. Sending only one radio slot is not acceptable in any case.
+     */
+    void onSimultaneousCallingSupportChanged(in int[] enabledLogicalSlots);
 }
diff --git a/radio/aidl/android/hardware/radio/config/IRadioConfigResponse.aidl b/radio/aidl/android/hardware/radio/config/IRadioConfigResponse.aidl
index df93e3c..33b0ff0 100644
--- a/radio/aidl/android/hardware/radio/config/IRadioConfigResponse.aidl
+++ b/radio/aidl/android/hardware/radio/config/IRadioConfigResponse.aidl
@@ -129,4 +129,27 @@
      *   RadioError:INVALID_ARGUMENTS
      */
     void setSimSlotsMappingResponse(in android.hardware.radio.RadioResponseInfo info);
+
+    /**
+     * Response to the asynchronous
+     * {@link IRadioConfig#getSimultaneousCallingSupport} request.
+     *
+     * @param info Response info struct containing response type, serial no. and error
+     * @param enabledLogicalSlots The slots that have simultaneous cellular calling enabled. If
+     * there is a call active on logical slot X, then a simultaneous cellular call is only possible
+     * on logical slot Y if BOTH slot X and slot Y are in enabledLogicalSlots. If simultaneous
+     * cellular calling is not currently supported, the expected value of enabledLogicalSLots is an
+     * empty int array. Sending only one radio slot is not acceptable in any case.
+     *
+     * Valid errors returned:
+     *   RadioError:REQUEST_NOT_SUPPORTED when android.hardware.telephony is not defined
+     *   RadioError:NONE
+     *   RadioError:RADIO_NOT_AVAILABLE
+     *   RadioError:INTERNAL_ERR
+     *   RadioError:MODEM_ERR
+     *
+     * @see IRadioConfig#getSimultaneousCallingSupport for more information.
+     */
+    void getSimultaneousCallingSupportResponse(
+            in android.hardware.radio.RadioResponseInfo info, in int[] enabledLogicalSlots);
 }
diff --git a/radio/aidl/android/hardware/radio/config/PhoneCapability.aidl b/radio/aidl/android/hardware/radio/config/PhoneCapability.aidl
index 35d6b5d..7936eb6 100644
--- a/radio/aidl/android/hardware/radio/config/PhoneCapability.aidl
+++ b/radio/aidl/android/hardware/radio/config/PhoneCapability.aidl
@@ -25,6 +25,7 @@
 @VintfStability
 @JavaDerive(toString=true)
 parcelable PhoneCapability {
+    const byte UNKNOWN = -1;
     /**
      * maxActiveData defines how many logical modems can have
      * PS attached simultaneously. For example, for L+L modem it
@@ -47,4 +48,10 @@
      * List of logical modem IDs.
      */
     byte[] logicalModemIds;
+    /**
+     * maxActiveVoice defines how many logical modems can have
+     * cellular voice calls simultaneously. For example, for cellular DSDA
+     * with simultaneous calling support, it should be 2.
+     */
+    byte maxActiveVoice = UNKNOWN;
 }
diff --git a/radio/aidl/android/hardware/radio/ims/SuggestedAction.aidl b/radio/aidl/android/hardware/radio/ims/SuggestedAction.aidl
index f0e28fc..73c57fa 100644
--- a/radio/aidl/android/hardware/radio/ims/SuggestedAction.aidl
+++ b/radio/aidl/android/hardware/radio/ims/SuggestedAction.aidl
@@ -37,9 +37,10 @@
     TRIGGER_PLMN_BLOCK_WITH_TIMEOUT,
     /**
      * Indicates that the IMS registration on current RAT failed multiple times.
-     * The radio shall block the current RAT and search for other available RATs in the
-     * background. If no other RAT is available that meets the carrier requirements, the
-     * radio may remain on the current RAT for internet service. The radio clears all
+     * The radio shall block the {@link AccessNetwork} included with this and
+     * search for other available RATs in the background.
+     * If no other RAT is available that meets the carrier requirements, the
+     * radio may remain on the blocked RAT for internet service. The radio clears all
      * RATs marked as unavailable if {@link IRadioIms#updateImsRegistrationInfo()} API
      * with REGISTERED state is invoked.
      */
@@ -48,5 +49,5 @@
      * Indicates that the radio clears all RATs marked as unavailable and tries to find
      * an available RAT that meets the carrier requirements.
      */
-    TRIGGER_CLEAR_RAT_BLOCK,
+    TRIGGER_CLEAR_RAT_BLOCKS,
 }
diff --git a/radio/aidl/compat/libradiocompat/config/RadioConfig.cpp b/radio/aidl/compat/libradiocompat/config/RadioConfig.cpp
index b450418..837c626 100644
--- a/radio/aidl/compat/libradiocompat/config/RadioConfig.cpp
+++ b/radio/aidl/compat/libradiocompat/config/RadioConfig.cpp
@@ -62,6 +62,13 @@
     return ok();
 }
 
+ScopedAStatus RadioConfig::getSimultaneousCallingSupport(int32_t serial) {
+    LOG_CALL << serial;
+    LOG(ERROR) << " getSimultaneousCallingSupport is unsupported by HIDL HALs";
+    respond()->getSimultaneousCallingSupportResponse(notSupported(serial), {});
+    return ok();
+}
+
 ScopedAStatus RadioConfig::getSimSlotsStatus(int32_t serial) {
     LOG_CALL << serial;
     mHal1_1->getSimSlotsStatus(serial);
diff --git a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioConfig.h b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioConfig.h
index 89ddea0..17d5985 100644
--- a/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioConfig.h
+++ b/radio/aidl/compat/libradiocompat/include/libradiocompat/RadioConfig.h
@@ -42,6 +42,7 @@
     ::ndk::ScopedAStatus getHalDeviceCapabilities(int32_t serial) override;
     ::ndk::ScopedAStatus getNumOfLiveModems(int32_t serial) override;
     ::ndk::ScopedAStatus getPhoneCapability(int32_t serial) override;
+    ::ndk::ScopedAStatus getSimultaneousCallingSupport(int32_t serial) override;
     ::ndk::ScopedAStatus getSimSlotsStatus(int32_t serial) override;
     ::ndk::ScopedAStatus setNumOfLiveModems(int32_t serial, int8_t numOfLiveModems) override;
     ::ndk::ScopedAStatus setPreferredDataModem(int32_t serial, int8_t modemId) override;
diff --git a/radio/aidl/vts/radio_config_indication.cpp b/radio/aidl/vts/radio_config_indication.cpp
index a84c20b..c707663 100644
--- a/radio/aidl/vts/radio_config_indication.cpp
+++ b/radio/aidl/vts/radio_config_indication.cpp
@@ -22,3 +22,8 @@
         RadioIndicationType /*type*/, const std::vector<SimSlotStatus>& /*slotStatus*/) {
     return ndk::ScopedAStatus::ok();
 }
+
+ndk::ScopedAStatus RadioConfigIndication::onSimultaneousCallingSupportChanged(
+        const std::vector<int32_t>& /*enabledLogicalSlots*/) {
+    return ndk::ScopedAStatus::ok();
+}
diff --git a/radio/aidl/vts/radio_config_response.cpp b/radio/aidl/vts/radio_config_response.cpp
index 7384f87..dccbd0e 100644
--- a/radio/aidl/vts/radio_config_response.cpp
+++ b/radio/aidl/vts/radio_config_response.cpp
@@ -40,6 +40,13 @@
     return ndk::ScopedAStatus::ok();
 }
 
+ndk::ScopedAStatus RadioConfigResponse::getSimultaneousCallingSupportResponse(
+        const RadioResponseInfo& info, const std::vector<int32_t>& /* enabledLogicalSlots */) {
+    rspInfo = info;
+    parent_config.notify(info.serial);
+    return ndk::ScopedAStatus::ok();
+}
+
 ndk::ScopedAStatus RadioConfigResponse::setPreferredDataModemResponse(
         const RadioResponseInfo& info) {
     rspInfo = info;
diff --git a/radio/aidl/vts/radio_config_test.cpp b/radio/aidl/vts/radio_config_test.cpp
index d8c0142..f725136 100644
--- a/radio/aidl/vts/radio_config_test.cpp
+++ b/radio/aidl/vts/radio_config_test.cpp
@@ -122,6 +122,41 @@
 }
 
 /*
+ * Test IRadioConfig.getSimultaneousCallingSupport() for the response returned.
+ */
+TEST_P(RadioConfigTest, getSimultaneousCallingSupport) {
+    if (telephony_flags::enforce_telephony_feature_mapping()) {
+        if (!deviceSupportsFeature(FEATURE_TELEPHONY)) {
+            GTEST_SKIP() << "Skipping getSimultaneousCallingSupport "
+                            "due to undefined FEATURE_TELEPHONY";
+        }
+    }
+
+    int32_t aidl_version;
+    ndk::ScopedAStatus aidl_status = radio_config->getInterfaceVersion(&aidl_version);
+    ASSERT_OK(aidl_status);
+    if (aidl_version < 3) {
+        ALOGI("Skipped the test since"
+                " getSimultaneousCallingSupport is not supported on version < 3.");
+        GTEST_SKIP();
+    }
+
+    serial = GetRandomSerialNumber();
+    ndk::ScopedAStatus res = radio_config->getSimultaneousCallingSupport(serial);
+    ASSERT_OK(res);
+    EXPECT_EQ(std::cv_status::no_timeout, wait());
+    EXPECT_EQ(RadioResponseType::SOLICITED, radioRsp_config->rspInfo.type);
+    EXPECT_EQ(serial, radioRsp_config->rspInfo.serial);
+    ALOGI("getSimultaneousCallingSupport, rspInfo.error = %s\n",
+          toString(radioRsp_config->rspInfo.error).c_str());
+
+    ASSERT_TRUE(CheckAnyOfErrors(
+            radioRsp_config->rspInfo.error,
+            {RadioError::NONE, RadioError::RADIO_NOT_AVAILABLE, RadioError::INTERNAL_ERR,
+            RadioError::MODEM_ERR, RadioError::REQUEST_NOT_SUPPORTED}));
+}
+
+/*
  * Test IRadioConfig.setPreferredDataModem() for the response returned.
  */
 TEST_P(RadioConfigTest, setPreferredDataModem) {
diff --git a/radio/aidl/vts/radio_config_utils.h b/radio/aidl/vts/radio_config_utils.h
index f79aedb..9e809ff 100644
--- a/radio/aidl/vts/radio_config_utils.h
+++ b/radio/aidl/vts/radio_config_utils.h
@@ -48,6 +48,9 @@
     virtual ndk::ScopedAStatus getPhoneCapabilityResponse(
             const RadioResponseInfo& info, const PhoneCapability& phoneCapability) override;
 
+    virtual ndk::ScopedAStatus getSimultaneousCallingSupportResponse(
+            const RadioResponseInfo& info, const std::vector<int32_t>& enabledLogicalSlots) override;
+
     virtual ndk::ScopedAStatus setPreferredDataModemResponse(
             const RadioResponseInfo& info) override;
 
@@ -71,6 +74,9 @@
 
     virtual ndk::ScopedAStatus simSlotsStatusChanged(
             RadioIndicationType type, const std::vector<SimSlotStatus>& slotStatus) override;
+
+    virtual ndk::ScopedAStatus onSimultaneousCallingSupportChanged(
+            const std::vector<int32_t>& /*enabledLogicalSlots*/) override;
 };
 
 // The main test class for Radio AIDL Config.