diff --git a/audio/aidl/Android.bp b/audio/aidl/Android.bp
index d6e6f50..4871058 100644
--- a/audio/aidl/Android.bp
+++ b/audio/aidl/Android.bp
@@ -100,6 +100,7 @@
         "android/hardware/audio/core/MmapBufferDescriptor.aidl",
         "android/hardware/audio/core/ModuleDebug.aidl",
         "android/hardware/audio/core/StreamDescriptor.aidl",
+        "android/hardware/audio/core/SurroundSoundConfig.aidl",
     ],
     imports: [
         "android.hardware.common-V2",
diff --git a/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/IConfig.aidl b/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/IConfig.aidl
index fd80715..163b7a0 100644
--- a/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/IConfig.aidl
+++ b/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/IConfig.aidl
@@ -34,4 +34,5 @@
 package android.hardware.audio.core;
 @VintfStability
 interface IConfig {
+  android.hardware.audio.core.SurroundSoundConfig getSurroundSoundConfig();
 }
diff --git a/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/SurroundSoundConfig.aidl b/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/SurroundSoundConfig.aidl
new file mode 100644
index 0000000..08a1537
--- /dev/null
+++ b/audio/aidl/aidl_api/android.hardware.audio.core/current/android/hardware/audio/core/SurroundSoundConfig.aidl
@@ -0,0 +1,43 @@
+/*
+ * 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.audio.core;
+@JavaDerive(equals=true, toString=true) @VintfStability
+parcelable SurroundSoundConfig {
+  android.hardware.audio.core.SurroundSoundConfig.SurroundFormatFamily[] formatFamilies;
+  @VintfStability
+  parcelable SurroundFormatFamily {
+    android.media.audio.common.AudioFormatDescription primaryFormat;
+    android.media.audio.common.AudioFormatDescription[] subFormats;
+  }
+}
diff --git a/audio/aidl/android/hardware/audio/core/IConfig.aidl b/audio/aidl/android/hardware/audio/core/IConfig.aidl
index c7bb414..c8ba6be 100644
--- a/audio/aidl/android/hardware/audio/core/IConfig.aidl
+++ b/audio/aidl/android/hardware/audio/core/IConfig.aidl
@@ -16,9 +16,22 @@
 
 package android.hardware.audio.core;
 
+import android.hardware.audio.core.SurroundSoundConfig;
+
 /**
  * This interface provides system-wide configuration parameters for audio I/O
  * (by "system" here we mean the device running Android).
  */
 @VintfStability
-interface IConfig {}
+interface IConfig {
+    /**
+     * Returns the surround sound configuration used for the Audio Policy
+     * Manager initial configuration.
+     *
+     * This method will only be called during the initialization of the Audio
+     * Policy Manager, and must always return the same result.
+     *
+     * @return The surround sound configuration
+     */
+    SurroundSoundConfig getSurroundSoundConfig();
+}
diff --git a/audio/aidl/android/hardware/audio/core/SurroundSoundConfig.aidl b/audio/aidl/android/hardware/audio/core/SurroundSoundConfig.aidl
new file mode 100644
index 0000000..eeda12a
--- /dev/null
+++ b/audio/aidl/android/hardware/audio/core/SurroundSoundConfig.aidl
@@ -0,0 +1,45 @@
+/*
+ * 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.
+ */
+
+package android.hardware.audio.core;
+
+import android.media.audio.common.AudioFormatDescription;
+
+/**
+ * SurroundSoundConfig defines the multi-channel formats that can be enabled on
+ * (primarily TV) devices.
+ */
+@JavaDerive(equals=true, toString=true)
+@VintfStability
+parcelable SurroundSoundConfig {
+    @VintfStability
+    parcelable SurroundFormatFamily {
+        /**
+         * A primaryFormat shall get an entry in the Surround Settings dialog on TV
+         * devices. There must be a corresponding Java ENCODING_... constant
+         * defined in AudioFormat.java, and a display name defined in
+         * AudioFormat.toDisplayName.
+         */
+        AudioFormatDescription primaryFormat;
+        /**
+         * List of formats that shall be equivalent to the primaryFormat from the
+         * users' point of view and don't need a dedicated Surround Settings
+         * dialog entry.
+         */
+        AudioFormatDescription[] subFormats;
+    }
+    SurroundFormatFamily[] formatFamilies;
+}
diff --git a/audio/aidl/default/Config.cpp b/audio/aidl/default/Config.cpp
index 3f7a3d3..0fdd5b4 100644
--- a/audio/aidl/default/Config.cpp
+++ b/audio/aidl/default/Config.cpp
@@ -13,7 +13,17 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
+#define LOG_TAG "AHAL_Module"
+#include <android-base/logging.h>
 
 #include "core-impl/Config.h"
 
-namespace aidl::android::hardware::audio::core {}  // namespace aidl::android::hardware::audio::core
+namespace aidl::android::hardware::audio::core {
+ndk::ScopedAStatus Config::getSurroundSoundConfig(SurroundSoundConfig* _aidl_return) {
+    SurroundSoundConfig surroundSoundConfig;
+    // TODO: parse from XML; for now, use empty config as default
+    *_aidl_return = std::move(surroundSoundConfig);
+    LOG(DEBUG) << __func__ << ": returning " << _aidl_return->toString();
+    return ndk::ScopedAStatus::ok();
+}
+}  // namespace aidl::android::hardware::audio::core
diff --git a/audio/aidl/default/include/core-impl/Config.h b/audio/aidl/default/include/core-impl/Config.h
index b62a14b..4555efd 100644
--- a/audio/aidl/default/include/core-impl/Config.h
+++ b/audio/aidl/default/include/core-impl/Config.h
@@ -20,6 +20,8 @@
 
 namespace aidl::android::hardware::audio::core {
 
-class Config : public BnConfig {};
+class Config : public BnConfig {
+    ndk::ScopedAStatus getSurroundSoundConfig(SurroundSoundConfig* _aidl_return) override;
+};
 
 }  // namespace aidl::android::hardware::audio::core
diff --git a/compatibility_matrices/compatibility_matrix.current.xml b/compatibility_matrices/compatibility_matrix.current.xml
index 51629cb..ceb5dcf 100644
--- a/compatibility_matrices/compatibility_matrix.current.xml
+++ b/compatibility_matrices/compatibility_matrix.current.xml
@@ -664,9 +664,9 @@
             <instance>default</instance>
         </interface>
     </hal>
-    <hal format="hidl" optional="false">
+    <hal format="aidl" optional="false">
         <name>android.hardware.thermal</name>
-        <version>2.0</version>
+        <version>1</version>
         <interface>
             <name>IThermal</name>
             <instance>default</instance>
diff --git a/security/keymint/RKP_CHANGELOG.md b/security/keymint/RKP_CHANGELOG.md
index dfcc938..243fc26 100644
--- a/security/keymint/RKP_CHANGELOG.md
+++ b/security/keymint/RKP_CHANGELOG.md
@@ -21,13 +21,13 @@
 ## IRemotelyProvisionedComponent 2 -> 3
 * ProtectedData has been removed.
 * DeviceInfo
-  * `cert_type` has been added, with values corresponding to `widevine` or `keymint`
   * `version` has moved to a top-level field within the CSR generated by the HAL
 * IRemotelyProvisionedComponent
   * The need for an EEK has been removed. There is no longer an encrypted portion of the CSR.
   * Test mode has been removed.
   * The schema for the CSR itself has been significantly simplified, please see
-    IRemotelyProvisionedComponent.aidl for more details.
-    * Notably, the chain of signing, MACing, and encryption operations has been replaced with a single
+    IRemotelyProvisionedComponent.aidl for more details. Notably,
+    * the chain of signing, MACing, and encryption operations has been replaced with a single
       COSE_Sign1 object.
+    * CertificateType has been added to identify the type of certificate being requested.
 
diff --git a/security/keymint/aidl/android/hardware/security/keymint/DeviceInfo.aidl b/security/keymint/aidl/android/hardware/security/keymint/DeviceInfo.aidl
index 6854851..f0af619 100644
--- a/security/keymint/aidl/android/hardware/security/keymint/DeviceInfo.aidl
+++ b/security/keymint/aidl/android/hardware/security/keymint/DeviceInfo.aidl
@@ -49,16 +49,7 @@
      *         "security_level" : "tee" / "strongbox",
      *         "fused": 1 / 0,  ; 1 if secure boot is enforced for the processor that the IRPC
      *                          ; implementation is contained in. 0 otherwise.
-     *         "cert_type": CertificateType;
      *     }
-     *
-     *     ; A tstr identifying the type of certificate. The set of supported certificate types may
-     *     ; be extended without requiring a version bump of the HAL. Custom certificate types may
-     *     ; be used, but the provisioning server may reject the request for an unknown certificate
-     *     ; type. The currently defined certificate types are:
-     *     ;  - "widevine"
-     *     ;  - "keymint"
-     *     CertificateType = tstr
      */
     byte[] deviceInfo;
 }
diff --git a/security/keymint/aidl/android/hardware/security/keymint/IRemotelyProvisionedComponent.aidl b/security/keymint/aidl/android/hardware/security/keymint/IRemotelyProvisionedComponent.aidl
index 77df99f..86c1717 100644
--- a/security/keymint/aidl/android/hardware/security/keymint/IRemotelyProvisionedComponent.aidl
+++ b/security/keymint/aidl/android/hardware/security/keymint/IRemotelyProvisionedComponent.aidl
@@ -315,38 +315,50 @@
      *
      * @return the following CBOR Certificate Signing Request (Csr) serialized into a byte array:
      *
-     * Csr = [
-     *    version: 3,              ; The CDDL Schema version.
-     *    UdsCerts,
-     *    DiceCertChain,
-     *    SignedData
-     * ]
+     * Csr = AuthenticatedMessage<CsrPayload>
      *
-     * ; COSE_Sign1 (untagged)
-     * SignedData = [
-     *     protected: bstr .cbor { 1 : AlgorithmEdDSA / AlgorithmES256 },
-     *     unprotected: {},
-     *     payload: bstr .cbor SignedDataPayload,
-     *     signature: bstr            ; PureEd25519(CDI_Leaf_Priv, bstr .cbor SignedDataSigStruct) /
-     *                                ; ECDSA(CDI_Leaf_Priv, bstr .cbor SignedDataSigStruct)
-     * ]
-     *
-     * ; Sig_structure for SignedData
-     * SignedDataSigStruct = [
-     *     context: "Signature1",
-     *     protected: bstr .cbor { 1 : AlgorithmEdDSA / AlgorithmES256 },
-     *     external_aad: bstr .size 0,
-     *     payload: bstr .cbor SignedDataPayload
-     * ]
-     *
-     * SignedDataPayload = [               ; CBOR Array defining the payload for SignedData
+     * CsrPayload = [                      ; CBOR Array defining the payload for Csr
+     *     version: 1,                     ; The CsrPayload CDDL Schema version.
+     *     CertificateType,                ; The type of certificate being requested.
      *     DeviceInfo,                     ; Defined in DeviceInfo.aidl
      *     challenge: bstr .size (32..64), ; Provided by the method parameters
      *     KeysToSign,                     ; Provided by the method parameters
      * ]
      *
+     *  ; A tstr identifying the type of certificate. The set of supported certificate types may
+     *  ; be extended without requiring a version bump of the HAL. Custom certificate types may
+     *  ; be used, but the provisioning server may reject the request for an unknown certificate
+     *  ; type. The currently defined certificate types are:
+     *  ;  - "widevine"
+     *  ;  - "keymint"
+     *  CertificateType = tstr
+     *
      * KeysToSign = [ * PublicKey ]   ; Please see MacedPublicKey.aidl for the PublicKey definition.
      *
+     * AuthenticatedMessage<T> = [
+     *    version: 3,              ; The AuthenticatedMessage CDDL Schema version.
+     *    UdsCerts,
+     *    DiceCertChain,
+     *    SignedData<T>,
+     * ]
+     *
+     * ; COSE_Sign1 (untagged)
+     * SignedData<T> = [
+     *     protected: bstr .cbor { 1 : AlgorithmEdDSA / AlgorithmES256 },
+     *     unprotected: {},
+     *     payload: bstr .cbor T / nil,
+     *     signature: bstr         ; PureEd25519(CDI_Leaf_Priv, bstr .cbor SignedDataSigStruct<T>) /
+     *                             ; ECDSA(CDI_Leaf_Priv, bstr .cbor SignedDataSigStruct<T>)
+     * ]
+     *
+     * ; Sig_structure for SignedData
+     * SignedDataSigStruct<T> = [
+     *     context: "Signature1",
+     *     protected: bstr .cbor { 1 : AlgorithmEdDSA / AlgorithmES256 },
+     *     external_aad: bstr .size 0,
+     *     payload: bstr .cbor T
+     * ]
+     *
      * ; UdsCerts allows the platform to provide additional certifications for the UDS_Pub. For
      * ; example, this could be provided by the hardware vendor, who certifies all of their chips.
      * ; The SignerName is a free-form string describing who generated the signature. The root
diff --git a/thermal/OWNERS b/thermal/OWNERS
new file mode 100644
index 0000000..7229b22
--- /dev/null
+++ b/thermal/OWNERS
@@ -0,0 +1,5 @@
+# Bug component: 826709
+
+# ADPF virtual team
+lpy@google.com
+wvw@google.com
diff --git a/thermal/aidl/Android.bp b/thermal/aidl/Android.bp
new file mode 100644
index 0000000..b132746
--- /dev/null
+++ b/thermal/aidl/Android.bp
@@ -0,0 +1,39 @@
+// 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.
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+aidl_interface {
+    name: "android.hardware.thermal",
+    vendor_available: true,
+    srcs: [
+        "android/hardware/thermal/*.aidl",
+    ],
+    stability: "vintf",
+    backend: {
+        cpp: {
+            enabled: true,
+        },
+        java: {
+            platform_apis: true,
+        },
+    },
+}
diff --git a/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/CoolingDevice.aidl b/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/CoolingDevice.aidl
new file mode 100644
index 0000000..50be508
--- /dev/null
+++ b/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/CoolingDevice.aidl
@@ -0,0 +1,40 @@
+/*
+ * 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
+ *
+1 *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT 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.thermal;
+@VintfStability
+parcelable CoolingDevice {
+  android.hardware.thermal.CoolingType type;
+  String name;
+  long value;
+}
diff --git a/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/CoolingType.aidl b/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/CoolingType.aidl
new file mode 100644
index 0000000..57c8939
--- /dev/null
+++ b/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/CoolingType.aidl
@@ -0,0 +1,48 @@
+/*
+ * 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.thermal;
+@Backing(type="int") @VintfStability
+enum CoolingType {
+  FAN = 0,
+  BATTERY = 1,
+  CPU = 2,
+  GPU = 3,
+  MODEM = 4,
+  NPU = 5,
+  COMPONENT = 6,
+  TPU = 7,
+  POWER_AMPLIFIER = 8,
+  DISPLAY = 9,
+  SPEAKER = 10,
+}
diff --git a/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/IThermal.aidl b/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/IThermal.aidl
new file mode 100644
index 0000000..0aed5ec
--- /dev/null
+++ b/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/IThermal.aidl
@@ -0,0 +1,46 @@
+/*
+ * 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.thermal;
+@VintfStability
+interface IThermal {
+  android.hardware.thermal.CoolingDevice[] getCoolingDevices();
+  android.hardware.thermal.CoolingDevice[] getCoolingDevicesWithType(in android.hardware.thermal.CoolingType type);
+  android.hardware.thermal.Temperature[] getTemperatures();
+  android.hardware.thermal.Temperature[] getTemperaturesWithType(in android.hardware.thermal.TemperatureType type);
+  android.hardware.thermal.TemperatureThreshold[] getTemperatureThresholds();
+  android.hardware.thermal.TemperatureThreshold[] getTemperatureThresholdsWithType(in android.hardware.thermal.TemperatureType type);
+  void registerThermalChangedCallback(in android.hardware.thermal.IThermalChangedCallback callback);
+  void registerThermalChangedCallbackWithType(in android.hardware.thermal.IThermalChangedCallback callback, in android.hardware.thermal.TemperatureType type);
+  void unregisterThermalChangedCallback(in android.hardware.thermal.IThermalChangedCallback callback);
+}
diff --git a/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/IThermalChangedCallback.aidl b/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/IThermalChangedCallback.aidl
new file mode 100644
index 0000000..6b3f922
--- /dev/null
+++ b/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/IThermalChangedCallback.aidl
@@ -0,0 +1,38 @@
+/*
+ * 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.thermal;
+@VintfStability
+interface IThermalChangedCallback {
+  oneway void notifyThrottling(in android.hardware.thermal.Temperature temperature);
+}
diff --git a/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/Temperature.aidl b/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/Temperature.aidl
new file mode 100644
index 0000000..7156415
--- /dev/null
+++ b/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/Temperature.aidl
@@ -0,0 +1,41 @@
+/*
+ * 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.thermal;
+@VintfStability
+parcelable Temperature {
+  android.hardware.thermal.TemperatureType type;
+  String name;
+  float value;
+  android.hardware.thermal.ThrottlingSeverity throttlingStatus;
+}
diff --git a/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/TemperatureThreshold.aidl b/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/TemperatureThreshold.aidl
new file mode 100644
index 0000000..6da561f
--- /dev/null
+++ b/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/TemperatureThreshold.aidl
@@ -0,0 +1,41 @@
+/*
+ * 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.thermal;
+@VintfStability
+parcelable TemperatureThreshold {
+  android.hardware.thermal.TemperatureType type;
+  String name;
+  float[] hotThrottlingThresholds;
+  float[] coldThrottlingThresholds;
+}
diff --git a/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/TemperatureType.aidl b/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/TemperatureType.aidl
new file mode 100644
index 0000000..c6a08c1
--- /dev/null
+++ b/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/TemperatureType.aidl
@@ -0,0 +1,52 @@
+/*
+ * 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.thermal;
+@Backing(type="int") @VintfStability
+enum TemperatureType {
+  UNKNOWN = -1,
+  CPU = 0,
+  GPU = 1,
+  BATTERY = 2,
+  SKIN = 3,
+  USB_PORT = 4,
+  POWER_AMPLIFIER = 5,
+  BCL_VOLTAGE = 6,
+  BCL_CURRENT = 7,
+  BCL_PERCENTAGE = 8,
+  NPU = 9,
+  TPU = 10,
+  DISPLAY = 11,
+  MODEM = 12,
+  SOC = 13,
+}
diff --git a/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/ThrottlingSeverity.aidl b/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/ThrottlingSeverity.aidl
new file mode 100644
index 0000000..e86b581
--- /dev/null
+++ b/thermal/aidl/aidl_api/android.hardware.thermal/current/android/hardware/thermal/ThrottlingSeverity.aidl
@@ -0,0 +1,44 @@
+/*
+ * 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.thermal;
+@Backing(type="int") @VintfStability
+enum ThrottlingSeverity {
+  NONE = 0,
+  LIGHT = 1,
+  MODERATE = 2,
+  SEVERE = 3,
+  CRITICAL = 4,
+  EMERGENCY = 5,
+  SHUTDOWN = 6,
+}
diff --git a/thermal/aidl/android/hardware/thermal/CoolingDevice.aidl b/thermal/aidl/android/hardware/thermal/CoolingDevice.aidl
new file mode 100644
index 0000000..6d974a5
--- /dev/null
+++ b/thermal/aidl/android/hardware/thermal/CoolingDevice.aidl
@@ -0,0 +1,41 @@
+/*
+ * 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
+ *
+1 *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT 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.thermal;
+
+import android.hardware.thermal.CoolingType;
+
+@VintfStability
+parcelable CoolingDevice {
+    /**
+     * This cooling device type, CPU, GPU, BATTERY, and etc.
+     */
+    CoolingType type;
+    /**
+     * Name of this cooling device.
+     * All cooling devices of the same "type" must have a different "name".
+     * The name is usually defined in kernel device tree, and this is for client
+     * logging purpose.
+     */
+    String name;
+    /**
+     * Current throttle state of the cooling device. The value can any unsigned integer
+     * numbers between 0 and max_state defined in its driver, usually representing the
+     * associated device's power state. 0 means device is not in throttling, higher value
+     * means deeper throttling.
+     */
+    long value;
+}
diff --git a/thermal/aidl/android/hardware/thermal/CoolingType.aidl b/thermal/aidl/android/hardware/thermal/CoolingType.aidl
new file mode 100644
index 0000000..1b430d2
--- /dev/null
+++ b/thermal/aidl/android/hardware/thermal/CoolingType.aidl
@@ -0,0 +1,36 @@
+/*
+ * 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.
+ */
+
+package android.hardware.thermal;
+
+/**
+ * Device cooling device types
+ */
+@VintfStability
+@Backing(type="int")
+enum CoolingType {
+    FAN,
+    BATTERY,
+    CPU,
+    GPU,
+    MODEM,
+    NPU,
+    COMPONENT,
+    TPU,
+    POWER_AMPLIFIER,
+    DISPLAY,
+    SPEAKER,
+}
diff --git a/thermal/aidl/android/hardware/thermal/IThermal.aidl b/thermal/aidl/android/hardware/thermal/IThermal.aidl
new file mode 100644
index 0000000..8b79cb4
--- /dev/null
+++ b/thermal/aidl/android/hardware/thermal/IThermal.aidl
@@ -0,0 +1,202 @@
+/*
+ * 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.
+ */
+
+package android.hardware.thermal;
+
+import android.hardware.thermal.CoolingDevice;
+import android.hardware.thermal.CoolingType;
+import android.hardware.thermal.IThermalChangedCallback;
+import android.hardware.thermal.Temperature;
+import android.hardware.thermal.TemperatureThreshold;
+import android.hardware.thermal.TemperatureType;
+
+@VintfStability
+interface IThermal {
+    /**
+     * Retrieves the cooling devices information.
+     *
+     * @return devices If succeed, it's filled with the
+     *    current cooling device information. The order of built-in cooling
+     *    devices in the list must be kept the same regardless the number
+     *    of calls to this method even if they go offline, if these devices
+     *    exist on boot. The method always returns and never removes from
+     *    the list such cooling devices.
+     *
+     * @throws ScopedAStatus Status of the operation. If status code is not
+     *    STATUS_OK, getMessage() must be populated with the human-readable
+     *    error message.
+     */
+    CoolingDevice[] getCoolingDevices();
+
+    /**
+     * Retrieves the cooling devices information of a given CoolingType.
+     *
+     * @param type the CoolingDevice such as CPU/GPU.
+     *
+     * @return devices If succeed, it's filled with the current
+     *    cooling device information. The order of built-in cooling
+     *    devices in the list must be kept the same regardless of the number
+     *    of calls to this method even if they go offline, if these devices
+     *    exist on boot. The method always returns and never removes from
+     *    the list such cooling devices.
+     *
+     * @throws ScopedAStatus Status of the operation. If status code is not
+     *    STATUS_OK, the getMessage() must be populated with the human-readable
+     *    error message.
+     */
+    CoolingDevice[] getCoolingDevicesWithType(in CoolingType type);
+
+    /**
+     * Retrieves temperatures in Celsius.
+     *
+     * @return temperatures If succeed, it's filled with the
+     *    current temperatures. The order of temperatures of built-in
+     *    devices (such as CPUs, GPUs and etc.) in the list must be kept
+     *    the same regardless the number of calls to this method even if
+     *    they go offline, if these devices exist on boot. The method
+     *    always returns and never removes such temperatures.
+     *
+     * @throws ScopedAStatus Status of the operation. If status code is not
+     *    STATUS_OK, the getMessage() must be populated with the human-readable
+     *    error message.
+     */
+    Temperature[] getTemperatures();
+
+    /**
+     * Retrieves temperatures in Celsius with a given TemperatureType.
+     *
+     * @param type the TemperatureType such as battery or skin.
+     *
+     * @return temperatures If succeed, it's filled with the
+     *    current temperatures. The order of temperatures of built-in
+     *    devices (such as CPUs, GPUs and etc.) in the list must be kept
+     *    the same regardless of the number of calls to this method even if
+     *    they go offline, if these devices exist on boot. The method
+     *    always returns and never removes such temperatures.
+     *
+     * @throws ScopedAStatus Status of the operation. If status code is not
+     *    STATUS_OK, the getMessage() must be populated with the human-readable
+     *    error message.
+     */
+    Temperature[] getTemperaturesWithType(in TemperatureType type);
+
+    /**
+     * Retrieves static temperature thresholds in Celsius.
+     *
+     * @return temperatureThresholds If succeed, it's filled with the
+     *    temperatures thresholds. The order of temperatures of built-in
+     *    devices (such as CPUs, GPUs and etc.) in the list must be kept
+     *    the same regardless of the number of calls to this method even if
+     *    they go offline, if these devices exist on boot. The method
+     *    always returns and never removes such temperatures. The thresholds
+     *    are returned as static values and must not change across calls. The actual
+     *    throttling state is determined in device thermal mitigation policy/agorithm
+     *    which might not be simple thresholds so these values Thermal HAL provided
+     *    may not be accurate to detemin the throttling status. To get accurate
+     *    throttling status, use getTemperatures or registerThermalChangedCallback
+     *    and listen to the callback.
+     *
+     * @throws ScopedAStatus Status of the operation. If status code is not
+     *    STATUS_OK, the getMessage() must be populated with the human-readable
+     *    error message.
+     */
+    TemperatureThreshold[] getTemperatureThresholds();
+
+    /**
+     * Retrieves static temperature thresholds in Celsius of a given temperature
+     * type.
+     *
+     * @param type the TemperatureType such as battery or skin.
+     *
+     * @return temperatureThresholds If succeed, it's filled with the
+     *    temperatures thresholds. The order of temperatures of built-in
+     *    devices (such as CPUs, GPUs and etc.) in the list must be kept
+     *    the same regardless of the number of calls to this method even if
+     *    they go offline, if these devices exist on boot. The method
+     *    always returns and never removes such temperatures. The thresholds
+     *    are returned as static values and must not change across calls. The actual
+     *    throttling state is determined in device thermal mitigation policy/agorithm
+     *    which might not be simple thresholds so these values Thermal HAL provided
+     *    may not be accurate to detemin the throttling status. To get accurate
+     *    throttling status, use getTemperatures or registerThermalChangedCallback
+     *    and listen to the callback.
+     *
+     * @throws ScopedAStatus Status of the operation. If status code is not
+     *    STATUS_OK, the getMessage() must be populated with the human-readable
+     *    error message.
+     */
+    TemperatureThreshold[] getTemperatureThresholdsWithType(in TemperatureType type);
+
+    /**
+     * Register an IThermalChangedCallback, used by the Thermal HAL to receive
+     * thermal events when thermal mitigation status changed.
+     * Multiple registrations with different IThermalChangedCallback must be allowed.
+     * Multiple registrations with same IThermalChangedCallback is not allowed, client
+     * should unregister the given IThermalChangedCallback first.
+     *
+     * @param callback the IThermalChangedCallback to use for receiving
+     *    thermal events. if nullptr callback is given, the status code will be
+     *    STATUS_BAD_VALUE and the operation will fail.
+     *
+     * @throws ScopedAStatus Status of the operation. If status code is not
+     *    STATUS_OK, the getMessage() must be populated with the human-readable
+     *    error message. If callback is given nullptr, the returned status code
+     *    will be STATUS_BAD_VALUE and the exception will be EX_ILLEGAL_ARGUMENT.
+     *    if callback is already registered, the returned status code will be
+     *    STATUS_INVALID_OPERATION, the exception will be EX_ILLEGAL_ARGUMENT.
+     */
+    void registerThermalChangedCallback(in IThermalChangedCallback callback);
+
+    /**
+     * Register an IThermalChangedCallback for a given TemperatureType, used by
+     * the Thermal HAL to receive thermal events when thermal mitigation status
+     * changed.
+     * Multiple registrations with different IThermalChangedCallback must be allowed.
+     * Multiple registrations with same IThermalChangedCallback is not allowed, client
+     * should unregister the given IThermalChangedCallback first.
+     *
+     * @param callback the IThermalChangedCallback to use for receiving
+     *    thermal events. if nullptr callback is given, the status code will be
+     *    STATUS_BAD_VALUE and the operation will fail.
+     * @param type the type to be filtered.
+     *
+     * @throws ScopedAStatus Status of the operation. If status code is not
+     *    STATUS_OK, the getMessage() must be populated with the human-readable
+     *    error message. If callback is given nullptr, the returned status code
+     *    will be STATUS_BAD_VALUE and the exception will be EX_ILLEGAL_ARGUMENT.
+     *    if callback is already registered, the returned status code will be
+     *    STATUS_INVALID_OPERATION, the exception will be EX_ILLEGAL_ARGUMENT.
+     */
+    void registerThermalChangedCallbackWithType(
+            in IThermalChangedCallback callback, in TemperatureType type);
+
+    /**
+     * Unregister an IThermalChangedCallback, used by the Thermal HAL
+     * to receive thermal events when thermal mitigation status changed.
+     *
+     * @param callback the IThermalChangedCallback to use for receiving
+     *    thermal events. if nullptr callback is given, the status code will be
+     *    STATUS_BAD_VALUE and the operation will fail.
+     *
+     * @throws ScopedAStatus Status of the operation. If status code is not
+     *    STATUS_OK, the getMessage() must be populated with the human-readable
+     *    error message. If callback is given nullptr, the returned status code
+     *    will be STATUS_BAD_VALUE and the exception will be EX_ILLEGAL_ARGUMENT.
+     *    if callback is not registered, the returned status code will be
+     *    STATUS_INVALID_OPERATION, the exception will be EX_ILLEGAL_ARGUMENT.
+     */
+    void unregisterThermalChangedCallback(in IThermalChangedCallback callback);
+}
diff --git a/thermal/aidl/android/hardware/thermal/IThermalChangedCallback.aidl b/thermal/aidl/android/hardware/thermal/IThermalChangedCallback.aidl
new file mode 100644
index 0000000..6fe2dac
--- /dev/null
+++ b/thermal/aidl/android/hardware/thermal/IThermalChangedCallback.aidl
@@ -0,0 +1,34 @@
+/*
+ * 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.
+ */
+
+package android.hardware.thermal;
+
+import android.hardware.thermal.Temperature;
+
+/**
+ * IThermalChangedCallback send throttling notification to clients.
+ */
+@VintfStability
+interface IThermalChangedCallback {
+    /**
+     * Send a thermal throttling event to all ThermalHAL
+     * thermal event listeners.
+     *
+     * @param temperature The temperature associated with the
+     *    throttling event.
+     */
+    oneway void notifyThrottling(in Temperature temperature);
+}
diff --git a/thermal/aidl/android/hardware/thermal/Temperature.aidl b/thermal/aidl/android/hardware/thermal/Temperature.aidl
new file mode 100644
index 0000000..f0041ed
--- /dev/null
+++ b/thermal/aidl/android/hardware/thermal/Temperature.aidl
@@ -0,0 +1,46 @@
+/*
+ * 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.
+ */
+
+package android.hardware.thermal;
+
+import android.hardware.thermal.TemperatureType;
+import android.hardware.thermal.ThrottlingSeverity;
+
+@VintfStability
+parcelable Temperature {
+    /**
+     * This temperature's type.
+     */
+    TemperatureType type;
+    /**
+     * Name of this temperature matching the TemperatureThreshold.
+     * All temperatures of the same "type" must have a different "name",
+     * e.g., cpu0, battery. Clients use it to match with TemperatureThreshold
+     * struct.
+     */
+    String name;
+    /**
+     * For BCL, this is the current reading of the virtual sensor and the unit is
+     * millivolt, milliamp, percentage for BCL_VOLTAGE, BCL_CURRENT and BCL_PERCENTAGE
+     * respectively. For everything else, this is the current temperature in Celsius.
+     * If not available set by HAL to NAN.
+     */
+    float value;
+    /**
+     * The current throttling level of the sensor.
+     */
+    ThrottlingSeverity throttlingStatus;
+}
diff --git a/thermal/aidl/android/hardware/thermal/TemperatureThreshold.aidl b/thermal/aidl/android/hardware/thermal/TemperatureThreshold.aidl
new file mode 100644
index 0000000..9ecdab3
--- /dev/null
+++ b/thermal/aidl/android/hardware/thermal/TemperatureThreshold.aidl
@@ -0,0 +1,49 @@
+/*
+ * 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.
+ */
+
+package android.hardware.thermal;
+
+import android.hardware.thermal.TemperatureType;
+
+@VintfStability
+parcelable TemperatureThreshold {
+    /**
+     * This temperature's type.
+     */
+    TemperatureType type;
+    /**
+     * Name of this temperature matching the Temperature struct.
+     * All temperatures of the same "type" must have a different "name",
+     * e.g., cpu0, battery. Clients use it to match Temperature struct.
+     */
+    String name;
+    /**
+     * Hot throttling temperature constant for this temperature sensor in
+     * level defined in ThrottlingSeverity including shutdown. Throttling
+     * happens when temperature >= threshold. If not available, set to NAN.
+     * Unit is same as Temperature's value.
+     * The number of thresholds must be the same as ThrottlingSeverity#len.
+     */
+    float[] hotThrottlingThresholds;
+    /**
+     * Cold throttling temperature constant for this temperature sensor in
+     * level defined in ThrottlingSeverity including shutdown. Throttling
+     * happens when temperature <= threshold. If not available, set to NAN.
+     * Unit is same as Temperature's value.
+     * The number of theresholds must be the same as ThrottlingSeverity#len.
+     */
+    float[] coldThrottlingThresholds;
+}
diff --git a/thermal/aidl/android/hardware/thermal/TemperatureType.aidl b/thermal/aidl/android/hardware/thermal/TemperatureType.aidl
new file mode 100644
index 0000000..aebe7ce
--- /dev/null
+++ b/thermal/aidl/android/hardware/thermal/TemperatureType.aidl
@@ -0,0 +1,46 @@
+/*
+ * 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.
+ */
+
+package android.hardware.thermal;
+
+/**
+ * Device temperature types
+ */
+@VintfStability
+@Backing(type="int")
+enum TemperatureType {
+    UNKNOWN = -1,
+    CPU = 0,
+    GPU = 1,
+    BATTERY = 2,
+    SKIN = 3,
+    USB_PORT = 4,
+    POWER_AMPLIFIER = 5,
+    /**
+     * Battery Current Limit - virtual sensors
+     */
+    BCL_VOLTAGE = 6,
+    BCL_CURRENT = 7,
+    BCL_PERCENTAGE = 8,
+    /**
+     * Neural Processing Unit
+     */
+    NPU = 9,
+    TPU = 10,
+    DISPLAY = 11,
+    MODEM = 12,
+    SOC = 13,
+}
diff --git a/thermal/aidl/android/hardware/thermal/ThrottlingSeverity.aidl b/thermal/aidl/android/hardware/thermal/ThrottlingSeverity.aidl
new file mode 100644
index 0000000..29f0724
--- /dev/null
+++ b/thermal/aidl/android/hardware/thermal/ThrottlingSeverity.aidl
@@ -0,0 +1,55 @@
+/*
+ * 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.
+ */
+
+package android.hardware.thermal;
+
+/**
+ * Device throttling severity
+ */
+@VintfStability
+@Backing(type="int")
+enum ThrottlingSeverity {
+    /**
+     * Not under throttling.
+     */
+    NONE = 0,
+    /**
+     * Light throttling where UX is not impacted.
+     */
+    LIGHT,
+    /**
+     * Moderate throttling where UX is not largely impacted.
+     */
+    MODERATE,
+    /**
+     * Severe throttling where UX is largely impacted.
+     * Similar to 1.0 throttlingThreshold.
+     */
+    SEVERE,
+    /**
+     * Platform has done everything to reduce power.
+     */
+    CRITICAL,
+    /**
+     * Key components in platform are shutting down due to thermal condition.
+     * Device functionalities will be limited.
+     */
+    EMERGENCY,
+    /**
+     * Need shutdown immediately.
+     */
+    SHUTDOWN,
+}
diff --git a/thermal/aidl/default/Android.bp b/thermal/aidl/default/Android.bp
new file mode 100644
index 0000000..49a578b
--- /dev/null
+++ b/thermal/aidl/default/Android.bp
@@ -0,0 +1,49 @@
+// 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.
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+cc_binary {
+    name: "android.hardware.thermal-service.example",
+    relative_install_path: "hw",
+    init_rc: [":android.hardware.thermal.example.rc"],
+    vintf_fragments: [":android.hardware.thermal.example.xml"],
+    vendor: true,
+    shared_libs: [
+        "libbase",
+        "libbinder_ndk",
+        "android.hardware.thermal-V1-ndk",
+    ],
+    srcs: [
+        "main.cpp",
+        "Thermal.cpp",
+    ],
+}
+
+filegroup {
+    name: "android.hardware.thermal.example.xml",
+    srcs: ["thermal-example.xml"],
+}
+
+filegroup {
+    name: "android.hardware.thermal.example.rc",
+    srcs: ["thermal-example.rc"],
+}
diff --git a/thermal/aidl/default/Thermal.cpp b/thermal/aidl/default/Thermal.cpp
new file mode 100644
index 0000000..5771e0e
--- /dev/null
+++ b/thermal/aidl/default/Thermal.cpp
@@ -0,0 +1,101 @@
+/*
+ * 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.
+ */
+
+#include "Thermal.h"
+
+#include <android-base/logging.h>
+
+namespace aidl::android::hardware::thermal::impl::example {
+
+using ndk::ScopedAStatus;
+
+ScopedAStatus Thermal::getCoolingDevices(std::vector<CoolingDevice>* /* out_devices */) {
+    LOG(VERBOSE) << __func__;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus Thermal::getCoolingDevicesWithType(CoolingType in_type,
+                                                 std::vector<CoolingDevice>* /* out_devices */) {
+    LOG(VERBOSE) << __func__ << " CoolingType: " << static_cast<int32_t>(in_type);
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus Thermal::getTemperatures(std::vector<Temperature>* /* out_temperatures */) {
+    LOG(VERBOSE) << __func__;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus Thermal::getTemperaturesWithType(TemperatureType in_type,
+                                               std::vector<Temperature>* /* out_temperatures */) {
+    LOG(VERBOSE) << __func__ << " TemperatureType: " << static_cast<int32_t>(in_type);
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus Thermal::getTemperatureThresholds(
+        std::vector<TemperatureThreshold>* /* out_temperatureThresholds */) {
+    LOG(VERBOSE) << __func__;
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus Thermal::getTemperatureThresholdsWithType(
+        TemperatureType in_type,
+        std::vector<TemperatureThreshold>* /* out_temperatureThresholds */) {
+    LOG(VERBOSE) << __func__ << " TemperatureType: " << static_cast<int32_t>(in_type);
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus Thermal::registerThermalChangedCallback(
+        const std::shared_ptr<IThermalChangedCallback>& in_callback) {
+    LOG(VERBOSE) << __func__ << " IThermalChangedCallback: " << in_callback;
+    if (in_callback == nullptr) {
+        return ScopedAStatus::fromStatus(STATUS_BAD_VALUE);
+    }
+    if (mCallbacks.find(in_callback) != mCallbacks.end()) {
+        return ScopedAStatus::fromStatus(STATUS_INVALID_OPERATION);
+    }
+    mCallbacks.insert(in_callback);
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus Thermal::registerThermalChangedCallbackWithType(
+        const std::shared_ptr<IThermalChangedCallback>& in_callback, TemperatureType in_type) {
+    LOG(VERBOSE) << __func__ << " IThermalChangedCallback: " << in_callback
+                 << ", TemperatureType: " << static_cast<int32_t>(in_type);
+    if (in_callback == nullptr) {
+        return ScopedAStatus::fromStatus(STATUS_BAD_VALUE);
+    }
+    if (mCallbacks.find(in_callback) != mCallbacks.end()) {
+        return ScopedAStatus::fromStatus(STATUS_INVALID_OPERATION);
+    }
+    mCallbacks.insert(in_callback);
+    return ScopedAStatus::ok();
+}
+
+ScopedAStatus Thermal::unregisterThermalChangedCallback(
+        const std::shared_ptr<IThermalChangedCallback>& in_callback) {
+    LOG(VERBOSE) << __func__ << " IThermalChangedCallback: " << in_callback;
+    bool found = false;
+    if (in_callback == nullptr) {
+        return ScopedAStatus::fromStatus(STATUS_BAD_VALUE);
+    }
+    if (mCallbacks.find(in_callback) == mCallbacks.end()) {
+        return ScopedAStatus::fromStatus(STATUS_INVALID_OPERATION);
+    }
+    mCallbacks.erase(in_callback);
+    return ScopedAStatus::ok();
+}
+
+}  // namespace aidl::android::hardware::thermal::impl::example
diff --git a/thermal/aidl/default/Thermal.h b/thermal/aidl/default/Thermal.h
new file mode 100644
index 0000000..788af4a
--- /dev/null
+++ b/thermal/aidl/default/Thermal.h
@@ -0,0 +1,65 @@
+/*
+ * 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.
+ */
+
+#pragma once
+
+#include <set>
+
+#include <aidl/android/hardware/thermal/BnThermal.h>
+
+namespace aidl {
+namespace android {
+namespace hardware {
+namespace thermal {
+namespace impl {
+namespace example {
+
+class Thermal : public BnThermal {
+  public:
+    ndk::ScopedAStatus getCoolingDevices(std::vector<CoolingDevice>* out_devices) override;
+    ndk::ScopedAStatus getCoolingDevicesWithType(CoolingType in_type,
+                                                 std::vector<CoolingDevice>* out_devices) override;
+
+    ndk::ScopedAStatus getTemperatures(std::vector<Temperature>* out_temperatures) override;
+    ndk::ScopedAStatus getTemperaturesWithType(TemperatureType in_type,
+                                               std::vector<Temperature>* out_temperatures) override;
+
+    ndk::ScopedAStatus getTemperatureThresholds(
+            std::vector<TemperatureThreshold>* out_temperatureThresholds) override;
+
+    ndk::ScopedAStatus getTemperatureThresholdsWithType(
+            TemperatureType in_type,
+            std::vector<TemperatureThreshold>* out_temperatureThresholds) override;
+
+    ndk::ScopedAStatus registerThermalChangedCallback(
+            const std::shared_ptr<IThermalChangedCallback>& in_callback) override;
+    ndk::ScopedAStatus registerThermalChangedCallbackWithType(
+            const std::shared_ptr<IThermalChangedCallback>& in_callback,
+            TemperatureType in_type) override;
+
+    ndk::ScopedAStatus unregisterThermalChangedCallback(
+            const std::shared_ptr<IThermalChangedCallback>& in_callback) override;
+
+  private:
+    std::set<std::shared_ptr<IThermalChangedCallback>> mCallbacks;
+};
+
+}  // namespace example
+}  // namespace impl
+}  // namespace thermal
+}  // namespace hardware
+}  // namespace android
+}  // namespace aidl
diff --git a/thermal/aidl/default/main.cpp b/thermal/aidl/default/main.cpp
new file mode 100644
index 0000000..61d8ad0
--- /dev/null
+++ b/thermal/aidl/default/main.cpp
@@ -0,0 +1,36 @@
+/*
+ * 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.
+ */
+
+#include "Thermal.h"
+
+#include <android-base/logging.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+
+using aidl::android::hardware::thermal::impl::example::Thermal;
+
+int main() {
+    ABinderProcess_setThreadPoolMaxThreadCount(0);
+    std::shared_ptr<Thermal> thermal = ndk::SharedRefBase::make<Thermal>();
+
+    const std::string instance = std::string() + Thermal::descriptor + "/default";
+    binder_status_t status =
+            AServiceManager_addService(thermal->asBinder().get(), instance.c_str());
+    CHECK(status == STATUS_OK);
+
+    ABinderProcess_joinThreadPool();
+    return EXIT_FAILURE;  // should not reach
+}
diff --git a/thermal/aidl/default/thermal-example.rc b/thermal/aidl/default/thermal-example.rc
new file mode 100644
index 0000000..591ca03
--- /dev/null
+++ b/thermal/aidl/default/thermal-example.rc
@@ -0,0 +1,4 @@
+service vendor.thermal-example /vendor/bin/hw/android.hardware.thermal-service.example
+    class hal
+    user nobody
+    group system
diff --git a/thermal/aidl/default/thermal-example.xml b/thermal/aidl/default/thermal-example.xml
new file mode 100644
index 0000000..bdee744
--- /dev/null
+++ b/thermal/aidl/default/thermal-example.xml
@@ -0,0 +1,7 @@
+<manifest version="1.0" type="device">
+    <hal format="aidl">
+        <name>android.hardware.thermal</name>
+        <version>1</version>
+        <fqname>IThermal/default</fqname>
+    </hal>
+</manifest>
diff --git a/thermal/aidl/vts/Android.bp b/thermal/aidl/vts/Android.bp
new file mode 100644
index 0000000..b00eb33
--- /dev/null
+++ b/thermal/aidl/vts/Android.bp
@@ -0,0 +1,40 @@
+// 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.
+
+package {
+    // See: http://go/android-license-faq
+    // A large-scale-change added 'default_applicable_licenses' to import
+    // all of the 'license_kinds' from "hardware_interfaces_license"
+    // to get the below license kinds:
+    //   SPDX-license-identifier-Apache-2.0
+    default_applicable_licenses: ["hardware_interfaces_license"],
+}
+
+cc_test {
+    name: "VtsHalThermalTargetTest",
+    defaults: [
+        "VtsHalTargetTestDefaults",
+        "use_libaidlvintf_gtest_helper_static",
+    ],
+    srcs: ["VtsHalThermalTargetTest.cpp"],
+    shared_libs: [
+        "libbinder_ndk",
+    ],
+    static_libs: [
+        "android.hardware.thermal-V1-ndk",
+    ],
+    test_suites: [
+        "vts",
+    ],
+}
diff --git a/thermal/aidl/vts/VtsHalThermalTargetTest.cpp b/thermal/aidl/vts/VtsHalThermalTargetTest.cpp
new file mode 100644
index 0000000..b93250e
--- /dev/null
+++ b/thermal/aidl/vts/VtsHalThermalTargetTest.cpp
@@ -0,0 +1,144 @@
+/*
+ * 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.
+ */
+
+#include <algorithm>
+#include <chrono>
+#include <cmath>
+#include <memory>
+#include <string>
+#include <thread>
+#include <vector>
+
+#define LOG_TAG "thermal_aidl_hal_test"
+
+#include <aidl/Gtest.h>
+#include <aidl/Vintf.h>
+#include <aidl/android/hardware/thermal/BnThermal.h>
+#include <aidl/android/hardware/thermal/BnThermalChangedCallback.h>
+#include <android-base/logging.h>
+#include <android-base/properties.h>
+#include <android/binder_ibinder.h>
+#include <android/binder_interface_utils.h>
+#include <android/binder_manager.h>
+#include <android/binder_process.h>
+#include <android/binder_status.h>
+#include <gtest/gtest.h>
+
+#include <unistd.h>
+
+namespace aidl::android::hardware::thermal {
+
+namespace {
+
+using ::android::sp;
+using android::hardware::thermal::CoolingDevice;
+using android::hardware::thermal::IThermal;
+using android::hardware::thermal::Temperature;
+using android::hardware::thermal::TemperatureType;
+
+using namespace std::string_literals;
+using namespace std::chrono_literals;
+
+static const Temperature kThrottleTemp = {
+        .type = TemperatureType::SKIN,
+        .name = "test temperature sensor",
+        .value = 98.6,
+        .throttlingStatus = ThrottlingSeverity::CRITICAL,
+};
+
+// Callback class for receiving thermal event notifications from main class
+class ThermalCallback : public BnThermalChangedCallback {
+  public:
+    ndk::ScopedAStatus notifyThrottling(const Temperature&) override {
+        {
+            std::lock_guard<std::mutex> lock(mMutex);
+            mInvoke = true;
+        }
+        mNotifyThrottling.notify_all();
+        return ndk::ScopedAStatus::ok();
+    }
+
+    template <typename R, typename P>
+    [[nodiscard]] bool waitForCallback(std::chrono::duration<R, P> duration) {
+        std::unique_lock<std::mutex> lock(mMutex);
+        bool r = mNotifyThrottling.wait_for(lock, duration, [this] { return this->mInvoke; });
+        mInvoke = false;
+        return r;
+    }
+
+  private:
+    std::mutex mMutex;
+    std::condition_variable mNotifyThrottling;
+    bool mInvoke = false;
+};
+
+// The main test class for THERMAL HIDL HAL.
+class ThermalAidlTest : public testing::TestWithParam<std::string> {
+  public:
+    void SetUp() override {
+        AIBinder* binder = AServiceManager_waitForService(GetParam().c_str());
+        ASSERT_NE(binder, nullptr);
+        mThermal = IThermal::fromBinder(ndk::SpAIBinder(binder));
+
+        mThermalCallback = ndk::SharedRefBase::make<ThermalCallback>();
+        ASSERT_NE(mThermalCallback, nullptr);
+        auto ret = mThermal->registerThermalChangedCallback(mThermalCallback);
+        ASSERT_TRUE(ret.isOk());
+        // Expect to fail if register again
+        ret = mThermal->registerThermalChangedCallback(mThermalCallback);
+        ASSERT_FALSE(ret.isOk());
+        ASSERT_TRUE(ret.getStatus() == STATUS_INVALID_OPERATION);
+    }
+
+    void TearDown() override {
+        auto ret = mThermal->unregisterThermalChangedCallback(mThermalCallback);
+        ASSERT_TRUE(ret.isOk());
+        // Expect to fail if unregister again
+        ret = mThermal->unregisterThermalChangedCallback(mThermalCallback);
+        ASSERT_FALSE(ret.isOk());
+        ASSERT_TRUE(ret.getStatus() == STATUS_INVALID_OPERATION);
+    }
+
+  protected:
+    std::shared_ptr<IThermal> mThermal;
+    std::shared_ptr<ThermalCallback> mThermalCallback;
+};
+
+// Test ThermalChangedCallback::notifyThrottling().
+// This just calls into and back from our local ThermalChangedCallback impl.
+TEST_P(ThermalAidlTest, NotifyThrottlingTest) {
+    std::shared_ptr<ThermalCallback> thermalCallback = ndk::SharedRefBase::make<ThermalCallback>();
+    auto ret = thermalCallback->notifyThrottling(kThrottleTemp);
+    ASSERT_TRUE(ret.isOk());
+    ASSERT_TRUE(thermalCallback->waitForCallback(200ms));
+}
+
+GTEST_ALLOW_UNINSTANTIATED_PARAMETERIZED_TEST(ThermalAidlTest);
+INSTANTIATE_TEST_SUITE_P(
+        Thermal, ThermalAidlTest,
+        testing::ValuesIn(::android::getAidlHalInstanceNames(IThermal::descriptor)),
+        ::android::PrintInstanceNameToString);
+
+}  // namespace
+
+int main(int argc, char** argv) {
+    ::testing::InitGoogleTest(&argc, argv);
+    ABinderProcess_setThreadPoolMaxThreadCount(1);
+    ABinderProcess_startThreadPool();
+    return RUN_ALL_TESTS();
+}
+
+}  // namespace aidl::android::hardware::thermal