1 /*
2 * Copyright (C) 2022 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 #include "powerhal_helper.h"
18
19 #include <android-base/file.h>
20 #include <android-base/logging.h>
21 #include <android-base/properties.h>
22 #include <android-base/stringprintf.h>
23 #include <android-base/strings.h>
24 #include <android/binder_manager.h>
25 #include <hidl/HidlTransportSupport.h>
26
27 #include <iterator>
28 #include <set>
29 #include <sstream>
30 #include <thread>
31 #include <vector>
32
33 #include "thermal_info.h"
34 #include "thermal_throttling.h"
35
36 namespace android {
37 namespace hardware {
38 namespace thermal {
39 namespace V2_0 {
40 namespace implementation {
41
42 using android::base::StringPrintf;
43
PowerHalService()44 PowerHalService::PowerHalService()
45 : power_hal_aidl_exist_(true), power_hal_aidl_(nullptr), power_hal_ext_aidl_(nullptr) {
46 connect();
47 }
48
connect()49 bool PowerHalService::connect() {
50 std::lock_guard<std::mutex> lock(lock_);
51
52 if (!power_hal_aidl_exist_) {
53 return false;
54 }
55
56 if (power_hal_aidl_ && power_hal_ext_aidl_) {
57 return true;
58 }
59
60 const std::string kInstance = std::string(IPower::descriptor) + "/default";
61 ndk::SpAIBinder power_binder = ndk::SpAIBinder(AServiceManager_getService(kInstance.c_str()));
62 ndk::SpAIBinder ext_power_binder;
63
64 if (power_binder.get() == nullptr) {
65 LOG(ERROR) << "Cannot get Power Hal Binder";
66 power_hal_aidl_exist_ = false;
67 return false;
68 }
69
70 power_hal_aidl_ = IPower::fromBinder(power_binder);
71
72 if (power_hal_aidl_ == nullptr) {
73 power_hal_aidl_exist_ = false;
74 LOG(ERROR) << "Cannot get Power Hal AIDL" << kInstance.c_str();
75 return false;
76 }
77
78 if (STATUS_OK != AIBinder_getExtension(power_binder.get(), ext_power_binder.getR()) ||
79 ext_power_binder.get() == nullptr) {
80 LOG(ERROR) << "Cannot get Power Hal Extension Binder";
81 power_hal_aidl_exist_ = false;
82 return false;
83 }
84
85 power_hal_ext_aidl_ = IPowerExt::fromBinder(ext_power_binder);
86 if (power_hal_ext_aidl_ == nullptr) {
87 LOG(ERROR) << "Cannot get Power Hal Extension AIDL";
88 power_hal_aidl_exist_ = false;
89 }
90
91 return true;
92 }
93
isModeSupported(const std::string & type,const ThrottlingSeverity & t)94 bool PowerHalService::isModeSupported(const std::string &type, const ThrottlingSeverity &t) {
95 bool isSupported = false;
96 if (!connect()) {
97 return false;
98 }
99 std::string power_hint = StringPrintf("THERMAL_%s_%s", type.c_str(), toString(t).c_str());
100 lock_.lock();
101 if (!power_hal_ext_aidl_->isModeSupported(power_hint, &isSupported).isOk()) {
102 LOG(ERROR) << "Fail to check supported mode, Hint: " << power_hint;
103 power_hal_ext_aidl_ = nullptr;
104 power_hal_aidl_ = nullptr;
105 lock_.unlock();
106 return false;
107 }
108 lock_.unlock();
109 return isSupported;
110 }
111
setMode(const std::string & type,const ThrottlingSeverity & t,const bool & enable,const bool error_on_exit)112 void PowerHalService::setMode(const std::string &type, const ThrottlingSeverity &t,
113 const bool &enable, const bool error_on_exit) {
114 if (!connect()) {
115 return;
116 }
117
118 std::string power_hint = StringPrintf("THERMAL_%s_%s", type.c_str(), toString(t).c_str());
119 LOG(INFO) << (error_on_exit ? "Resend Hint " : "Send Hint ") << power_hint
120 << " Enable: " << std::boolalpha << enable;
121 lock_.lock();
122 if (!power_hal_ext_aidl_->setMode(power_hint, enable).isOk()) {
123 LOG(ERROR) << "Fail to set mode, Hint: " << power_hint;
124 power_hal_ext_aidl_ = nullptr;
125 power_hal_aidl_ = nullptr;
126 lock_.unlock();
127 if (!error_on_exit) {
128 setMode(type, t, enable, true);
129 }
130 return;
131 }
132 lock_.unlock();
133 }
134
135 } // namespace implementation
136 } // namespace V2_0
137 } // namespace thermal
138 } // namespace hardware
139 } // namespace android
140