1 /* 2 * Copyright 2025 The Android Open Source Project 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 #pragma once 18 #include <aidl/android/hardware/thermal/BnThermalChangedCallback.h> 19 #include <aidl/android/hardware/thermal/IThermal.h> 20 21 namespace aidl { 22 namespace google { 23 namespace hardware { 24 namespace power { 25 namespace impl { 26 namespace pixel { 27 28 using ::aidl::android::hardware::thermal::BnThermalChangedCallback; 29 using ::aidl::android::hardware::thermal::IThermal; 30 using ::aidl::android::hardware::thermal::Temperature; 31 using ::aidl::android::hardware::thermal::TemperatureType; 32 using ::aidl::android::hardware::thermal::ThrottlingSeverity; 33 34 /** 35 * Listen to the device thermal throttling status, so it could be used to 36 * aggregate the performance metrics with the thermal states. 37 */ 38 class ThermalStateListener { 39 public: 40 ~ThermalStateListener() = default; 41 ThermalStateListener(ThermalStateListener const &) = delete; 42 ThermalStateListener(ThermalStateListener &&) = delete; 43 ThermalStateListener &operator=(ThermalStateListener const &) = delete; 44 ThermalStateListener &operator=(ThermalStateListener &&) = delete; 45 46 bool init(); 47 ThrottlingSeverity getThermalThrotSev(); 48 49 // Singleton getInstance()50 static ThermalStateListener *getInstance() { 51 static ThermalStateListener instance{}; 52 return &instance; 53 } 54 55 private: 56 ThermalStateListener() = default; 57 bool connectThermalHal(); 58 bool registerCallback(); 59 void thermalCallback(const Temperature &temp); 60 61 class ThermalCallback : public BnThermalChangedCallback { 62 public: ThermalCallback(std::function<void (const Temperature &)> notify_function)63 ThermalCallback(std::function<void(const Temperature &)> notify_function) 64 : mNotifyFunction(notify_function) {} 65 notifyThrottling(const Temperature & temperature)66 ndk::ScopedAStatus notifyThrottling(const Temperature &temperature) override { 67 mNotifyFunction(temperature); 68 return ndk::ScopedAStatus::ok(); 69 } 70 71 private: 72 std::function<void(const Temperature &)> mNotifyFunction; 73 }; 74 75 std::shared_ptr<IThermal> mThermalAIDL; 76 std::shared_ptr<ThermalCallback> mThermalCallback; 77 std::atomic<ThrottlingSeverity> mThermalThrotSev{ThrottlingSeverity::NONE}; 78 }; 79 80 } // namespace pixel 81 } // namespace impl 82 } // namespace power 83 } // namespace hardware 84 } // namespace google 85 } // namespace aidl 86