96 lines
3.0 KiB
C++
96 lines
3.0 KiB
C++
/*
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* Copyright (C) 2020 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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#define LOG_TAG "PowerHalLoader"
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#include <android/hardware/power/1.1/IPower.h>
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#include <android/hardware/power/IPower.h>
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#include <binder/IServiceManager.h>
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#include <hardware/power.h>
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#include <hardware_legacy/power.h>
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#include <powermanager/PowerHalLoader.h>
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using namespace android::hardware::power;
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namespace android {
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namespace power {
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// -------------------------------------------------------------------------------------------------
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template <typename T, typename F>
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sp<T> loadHal(bool& exists, sp<T>& hal, F& loadFn, const char* halName) {
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if (!exists) {
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return nullptr;
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}
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if (hal) {
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return hal;
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}
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hal = loadFn();
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if (hal) {
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ALOGV("Successfully connected to Power HAL %s service.", halName);
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} else {
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ALOGV("Power HAL %s service not available.", halName);
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exists = false;
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}
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return hal;
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}
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// -------------------------------------------------------------------------------------------------
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std::mutex PowerHalLoader::gHalMutex;
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sp<IPower> PowerHalLoader::gHalAidl = nullptr;
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sp<V1_0::IPower> PowerHalLoader::gHalHidlV1_0 = nullptr;
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sp<V1_1::IPower> PowerHalLoader::gHalHidlV1_1 = nullptr;
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void PowerHalLoader::unloadAll() {
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std::lock_guard<std::mutex> lock(gHalMutex);
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gHalAidl = nullptr;
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gHalHidlV1_0 = nullptr;
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gHalHidlV1_1 = nullptr;
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}
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sp<IPower> PowerHalLoader::loadAidl() {
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std::lock_guard<std::mutex> lock(gHalMutex);
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static bool gHalExists = true;
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static auto loadFn = []() { return waitForVintfService<IPower>(); };
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return loadHal<IPower>(gHalExists, gHalAidl, loadFn, "AIDL");
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}
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sp<V1_0::IPower> PowerHalLoader::loadHidlV1_0() {
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std::lock_guard<std::mutex> lock(gHalMutex);
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return loadHidlV1_0Locked();
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}
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sp<V1_1::IPower> PowerHalLoader::loadHidlV1_1() {
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std::lock_guard<std::mutex> lock(gHalMutex);
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static bool gHalExists = true;
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static auto loadFn = []() { return V1_1::IPower::castFrom(loadHidlV1_0Locked()); };
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return loadHal<V1_1::IPower>(gHalExists, gHalHidlV1_1, loadFn, "HIDL v1.1");
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}
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sp<V1_0::IPower> PowerHalLoader::loadHidlV1_0Locked() {
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static bool gHalExists = true;
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static auto loadFn = []() { return V1_0::IPower::getService(); };
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return loadHal<V1_0::IPower>(gHalExists, gHalHidlV1_0, loadFn, "HIDL v1.0");
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}
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// -------------------------------------------------------------------------------------------------
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} // namespace power
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} // namespace android
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