1 /* 2 * Copyright (C) 2020 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 #ifndef ANDROID_POWERHALLOADER_H 18 #define ANDROID_POWERHALLOADER_H 19 20 #include <aidl/android/hardware/power/IPower.h> 21 #include <android-base/thread_annotations.h> 22 #include <android/hardware/power/1.1/IPower.h> 23 #include <android/hardware/power/1.2/IPower.h> 24 #include <android/hardware/power/1.3/IPower.h> 25 26 namespace android { 27 28 namespace power { 29 30 // Loads available Power HAL services. 31 class PowerHalLoader { 32 public: 33 static void unloadAll(); 34 static std::shared_ptr<aidl::android::hardware::power::IPower> loadAidl(); 35 static sp<hardware::power::V1_0::IPower> loadHidlV1_0(); 36 static sp<hardware::power::V1_1::IPower> loadHidlV1_1(); 37 static sp<hardware::power::V1_2::IPower> loadHidlV1_2(); 38 static sp<hardware::power::V1_3::IPower> loadHidlV1_3(); 39 // Returns aidl interface version, or 0 if AIDL is not used 40 static int32_t getAidlVersion(); 41 42 private: 43 static std::mutex gHalMutex; 44 static std::shared_ptr<aidl::android::hardware::power::IPower> gHalAidl GUARDED_BY(gHalMutex); 45 static sp<hardware::power::V1_0::IPower> gHalHidlV1_0 GUARDED_BY(gHalMutex); 46 static sp<hardware::power::V1_1::IPower> gHalHidlV1_1 GUARDED_BY(gHalMutex); 47 static sp<hardware::power::V1_2::IPower> gHalHidlV1_2 GUARDED_BY(gHalMutex); 48 static sp<hardware::power::V1_3::IPower> gHalHidlV1_3 GUARDED_BY(gHalMutex); 49 50 static sp<hardware::power::V1_0::IPower> loadHidlV1_0Locked() 51 EXCLUSIVE_LOCKS_REQUIRED(gHalMutex); 52 53 static int32_t gAidlInterfaceVersion; 54 55 PowerHalLoader() = delete; 56 ~PowerHalLoader() = delete; 57 }; 58 59 }; // namespace power 60 61 } // namespace android 62 63 #endif // ANDROID_POWERHALLOADER_H 64