diff --git a/power/aidl/Android.bp b/power/aidl/Android.bp
index 70b1203..082572d 100644
--- a/power/aidl/Android.bp
+++ b/power/aidl/Android.bp
@@ -49,7 +49,12 @@
             version: "3",
             imports: [],
         },
+        {
+            version: "4",
+            imports: [],
+        },
 
     ],
+    frozen: true,
 
 }
diff --git a/power/aidl/aidl_api/android.hardware.power/4/.hash b/power/aidl/aidl_api/android.hardware.power/4/.hash
new file mode 100644
index 0000000..10f7e2c
--- /dev/null
+++ b/power/aidl/aidl_api/android.hardware.power/4/.hash
@@ -0,0 +1 @@
+141ac3bb33bb4f524de020669f12599c18cdd67f
diff --git a/power/aidl/aidl_api/android.hardware.power/4/android/hardware/power/Boost.aidl b/power/aidl/aidl_api/android.hardware.power/4/android/hardware/power/Boost.aidl
new file mode 100644
index 0000000..8ee15ef
--- /dev/null
+++ b/power/aidl/aidl_api/android.hardware.power/4/android/hardware/power/Boost.aidl
@@ -0,0 +1,43 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// 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 Boost {
+  INTERACTION,
+  DISPLAY_UPDATE_IMMINENT,
+  ML_ACC,
+  AUDIO_LAUNCH,
+  CAMERA_LAUNCH,
+  CAMERA_SHOT,
+}
diff --git a/power/aidl/aidl_api/android.hardware.power/4/android/hardware/power/IPower.aidl b/power/aidl/aidl_api/android.hardware.power/4/android/hardware/power/IPower.aidl
new file mode 100644
index 0000000..ae03313
--- /dev/null
+++ b/power/aidl/aidl_api/android.hardware.power/4/android/hardware/power/IPower.aidl
@@ -0,0 +1,43 @@
+/*
+ * 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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// 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
+interface IPower {
+  oneway void setMode(in android.hardware.power.Mode type, in boolean enabled);
+  boolean isModeSupported(in android.hardware.power.Mode type);
+  oneway void setBoost(in android.hardware.power.Boost type, in int durationMs);
+  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();
+}
diff --git a/power/aidl/aidl_api/android.hardware.power/4/android/hardware/power/IPowerHintSession.aidl b/power/aidl/aidl_api/android.hardware.power/4/android/hardware/power/IPowerHintSession.aidl
new file mode 100644
index 0000000..e6809da
--- /dev/null
+++ b/power/aidl/aidl_api/android.hardware.power/4/android/hardware/power/IPowerHintSession.aidl
@@ -0,0 +1,44 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// THIS FILE IS IMMUTABLE. DO NOT EDIT IN ANY CASE.                          //
+///////////////////////////////////////////////////////////////////////////////
+
+// This file is a snapshot of an AIDL file. Do not edit it manually. There are
+// two cases:
+// 1). this is a frozen version file - do not edit this in any case.
+// 2). this is a 'current' file. If you make a backwards compatible change to
+//     the interface (from the latest frozen version), the build system will
+//     prompt you to update this file with `m <name>-update-api`.
+//
+// You must not make a backward incompatible change to any AIDL file built
+// with the aidl_interface module type with versions property set. The module
+// type is used to build AIDL files in a way that they can be used across
+// independently updatable components of the system. If a device is shipped
+// with such a backward incompatible change, it has a high risk of breaking
+// later when a module using the interface is updated, e.g., Mainline modules.
+
+package android.hardware.power;
+@VintfStability
+interface IPowerHintSession {
+  oneway void updateTargetWorkDuration(long targetDurationNanos);
+  oneway void reportActualWorkDuration(in android.hardware.power.WorkDuration[] durations);
+  oneway void pause();
+  oneway void resume();
+  oneway void close();
+  oneway void sendHint(android.hardware.power.SessionHint hint);
+  void setThreads(in int[] threadIds);
+}
diff --git a/power/aidl/aidl_api/android.hardware.power/4/android/hardware/power/Mode.aidl b/power/aidl/aidl_api/android.hardware.power/4/android/hardware/power/Mode.aidl
new file mode 100644
index 0000000..efbb300
--- /dev/null
+++ b/power/aidl/aidl_api/android.hardware.power/4/android/hardware/power/Mode.aidl
@@ -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.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// 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 Mode {
+  DOUBLE_TAP_TO_WAKE,
+  LOW_POWER,
+  SUSTAINED_PERFORMANCE,
+  FIXED_PERFORMANCE,
+  VR,
+  LAUNCH,
+  EXPENSIVE_RENDERING,
+  INTERACTIVE,
+  DEVICE_IDLE,
+  DISPLAY_INACTIVE,
+  AUDIO_STREAMING_LOW_LATENCY,
+  CAMERA_STREAMING_SECURE,
+  CAMERA_STREAMING_LOW,
+  CAMERA_STREAMING_MID,
+  CAMERA_STREAMING_HIGH,
+  GAME,
+  GAME_LOADING,
+}
diff --git a/power/aidl/aidl_api/android.hardware.power/4/android/hardware/power/SessionHint.aidl b/power/aidl/aidl_api/android.hardware.power/4/android/hardware/power/SessionHint.aidl
new file mode 100644
index 0000000..9c1f381
--- /dev/null
+++ b/power/aidl/aidl_api/android.hardware.power/4/android/hardware/power/SessionHint.aidl
@@ -0,0 +1,42 @@
+/*
+ * Copyright (C) 2022 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT 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 SessionHint {
+  CPU_LOAD_UP = 0,
+  CPU_LOAD_DOWN = 1,
+  CPU_LOAD_RESET = 2,
+  CPU_LOAD_RESUME = 3,
+  POWER_EFFICIENCY = 4,
+}
diff --git a/power/aidl/aidl_api/android.hardware.power/4/android/hardware/power/WorkDuration.aidl b/power/aidl/aidl_api/android.hardware.power/4/android/hardware/power/WorkDuration.aidl
new file mode 100644
index 0000000..e86cd40
--- /dev/null
+++ b/power/aidl/aidl_api/android.hardware.power/4/android/hardware/power/WorkDuration.aidl
@@ -0,0 +1,39 @@
+/*
+ * Copyright (C) 2021 The Android Open Source Project
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+///////////////////////////////////////////////////////////////////////////////
+// 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 WorkDuration {
+  long timeStampNanos;
+  long durationNanos;
+}