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/*
* 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.
*/
#define LOG_TAG "PowerHalController"
#include <android/hardware/power/1.1/IPower.h>
#include <android/hardware/power/Boost.h>
#include <android/hardware/power/IPower.h>
#include <android/hardware/power/IPowerHintSession.h>
#include <android/hardware/power/Mode.h>
#include <powermanager/PowerHalController.h>
#include <powermanager/PowerHalLoader.h>
#include <utils/Log.h>
using namespace android::hardware::power;
namespace android {
namespace power {
// -------------------------------------------------------------------------------------------------
std::unique_ptr<HalWrapper> HalConnector::connect() {
sp<IPower> halAidl = PowerHalLoader::loadAidl();
if (halAidl) {
return std::make_unique<AidlHalWrapper>(halAidl);
}
sp<V1_0::IPower> halHidlV1_0 = PowerHalLoader::loadHidlV1_0();
sp<V1_1::IPower> halHidlV1_1 = PowerHalLoader::loadHidlV1_1();
if (halHidlV1_1) {
return std::make_unique<HidlHalWrapperV1_1>(halHidlV1_0, halHidlV1_1);
}
if (halHidlV1_0) {
return std::make_unique<HidlHalWrapperV1_0>(halHidlV1_0);
}
return nullptr;
}
void HalConnector::reset() {
PowerHalLoader::unloadAll();
}
// -------------------------------------------------------------------------------------------------
void PowerHalController::init() {
initHal();
}
// Check validity of current handle to the power HAL service, and create a new
// one if necessary.
std::shared_ptr<HalWrapper> PowerHalController::initHal() {
std::lock_guard<std::mutex> lock(mConnectedHalMutex);
if (mConnectedHal == nullptr) {
mConnectedHal = mHalConnector->connect();
if (mConnectedHal == nullptr) {
// Unable to connect to Power HAL service. Fallback to default.
return mDefaultHal;
}
}
return mConnectedHal;
}
// Check if a call to Power HAL function failed; if so, log the failure and
// invalidate the current Power HAL handle.
template <typename T>
HalResult<T> PowerHalController::processHalResult(HalResult<T> result, const char* fnName) {
if (result.isFailed()) {
ALOGE("%s failed: %s", fnName, result.errorMessage());
std::lock_guard<std::mutex> lock(mConnectedHalMutex);
// Drop Power HAL handle. This will force future api calls to reconnect.
mConnectedHal = nullptr;
mHalConnector->reset();
}
return result;
}
HalResult<void> PowerHalController::setBoost(Boost boost, int32_t durationMs) {
std::shared_ptr<HalWrapper> handle = initHal();
auto result = handle->setBoost(boost, durationMs);
return processHalResult(result, "setBoost");
}
HalResult<void> PowerHalController::setMode(Mode mode, bool enabled) {
std::shared_ptr<HalWrapper> handle = initHal();
auto result = handle->setMode(mode, enabled);
return processHalResult(result, "setMode");
}
HalResult<sp<IPowerHintSession>> PowerHalController::createHintSession(
int32_t tgid, int32_t uid, const std::vector<int32_t>& threadIds, int64_t durationNanos) {
std::shared_ptr<HalWrapper> handle = initHal();
auto result = handle->createHintSession(tgid, uid, threadIds, durationNanos);
return processHalResult(result, "createHintSession");
}
HalResult<int64_t> PowerHalController::getHintSessionPreferredRate() {
std::shared_ptr<HalWrapper> handle = initHal();
auto result = handle->getHintSessionPreferredRate();
return processHalResult(result, "getHintSessionPreferredRate");
}
} // namespace power
} // namespace android
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