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 #define LOG_TAG "PowerHalController"
18 #include <android/hardware/power/1.1/IPower.h>
19 #include <android/hardware/power/Boost.h>
20 #include <android/hardware/power/IPower.h>
21 #include <android/hardware/power/IPowerHintSession.h>
22 #include <android/hardware/power/Mode.h>
23 #include <powermanager/PowerHalController.h>
24 #include <powermanager/PowerHalLoader.h>
25 #include <utils/Log.h>
26
27 using namespace android::hardware::power;
28
29 namespace android {
30
31 namespace power {
32
33 // -------------------------------------------------------------------------------------------------
34
connect()35 std::unique_ptr<HalWrapper> HalConnector::connect() {
36 if (sp<IPower> halAidl = PowerHalLoader::loadAidl()) {
37 return std::make_unique<AidlHalWrapper>(halAidl);
38 }
39 // If V1_0 isn't defined, none of them are
40 if (sp<V1_0::IPower> halHidlV1_0 = PowerHalLoader::loadHidlV1_0()) {
41 if (sp<V1_3::IPower> halHidlV1_3 = PowerHalLoader::loadHidlV1_3()) {
42 return std::make_unique<HidlHalWrapperV1_3>(halHidlV1_3);
43 }
44 if (sp<V1_2::IPower> halHidlV1_2 = PowerHalLoader::loadHidlV1_2()) {
45 return std::make_unique<HidlHalWrapperV1_2>(halHidlV1_2);
46 }
47 if (sp<V1_1::IPower> halHidlV1_1 = PowerHalLoader::loadHidlV1_1()) {
48 return std::make_unique<HidlHalWrapperV1_1>(halHidlV1_1);
49 }
50 return std::make_unique<HidlHalWrapperV1_0>(halHidlV1_0);
51 }
52 return nullptr;
53 }
54
reset()55 void HalConnector::reset() {
56 PowerHalLoader::unloadAll();
57 }
58
59 // -------------------------------------------------------------------------------------------------
60
init()61 void PowerHalController::init() {
62 initHal();
63 }
64
65 // Check validity of current handle to the power HAL service, and create a new
66 // one if necessary.
initHal()67 std::shared_ptr<HalWrapper> PowerHalController::initHal() {
68 std::lock_guard<std::mutex> lock(mConnectedHalMutex);
69 if (mConnectedHal == nullptr) {
70 mConnectedHal = mHalConnector->connect();
71 if (mConnectedHal == nullptr) {
72 // Unable to connect to Power HAL service. Fallback to default.
73 return mDefaultHal;
74 }
75 }
76 return mConnectedHal;
77 }
78
79 // Check if a call to Power HAL function failed; if so, log the failure and
80 // invalidate the current Power HAL handle.
81 template <typename T>
processHalResult(HalResult<T> result,const char * fnName)82 HalResult<T> PowerHalController::processHalResult(HalResult<T> result, const char* fnName) {
83 if (result.isFailed()) {
84 ALOGE("%s failed: %s", fnName, result.errorMessage());
85 std::lock_guard<std::mutex> lock(mConnectedHalMutex);
86 // Drop Power HAL handle. This will force future api calls to reconnect.
87 mConnectedHal = nullptr;
88 mHalConnector->reset();
89 }
90 return result;
91 }
92
setBoost(Boost boost,int32_t durationMs)93 HalResult<void> PowerHalController::setBoost(Boost boost, int32_t durationMs) {
94 std::shared_ptr<HalWrapper> handle = initHal();
95 auto result = handle->setBoost(boost, durationMs);
96 return processHalResult(result, "setBoost");
97 }
98
setMode(Mode mode,bool enabled)99 HalResult<void> PowerHalController::setMode(Mode mode, bool enabled) {
100 std::shared_ptr<HalWrapper> handle = initHal();
101 auto result = handle->setMode(mode, enabled);
102 return processHalResult(result, "setMode");
103 }
104
createHintSession(int32_t tgid,int32_t uid,const std::vector<int32_t> & threadIds,int64_t durationNanos)105 HalResult<sp<IPowerHintSession>> PowerHalController::createHintSession(
106 int32_t tgid, int32_t uid, const std::vector<int32_t>& threadIds, int64_t durationNanos) {
107 std::shared_ptr<HalWrapper> handle = initHal();
108 auto result = handle->createHintSession(tgid, uid, threadIds, durationNanos);
109 return processHalResult(result, "createHintSession");
110 }
111
getHintSessionPreferredRate()112 HalResult<int64_t> PowerHalController::getHintSessionPreferredRate() {
113 std::shared_ptr<HalWrapper> handle = initHal();
114 auto result = handle->getHintSessionPreferredRate();
115 return processHalResult(result, "getHintSessionPreferredRate");
116 }
117
118 } // namespace power
119
120 } // namespace android
121