1 /*
2 * Copyright (C) 2016 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 "[email protected]"
18
19 #include <errno.h>
20 #include <math.h>
21
22 #include <vector>
23
24 #include <log/log.h>
25
26 #include <hardware/hardware.h>
27 #include <hardware/thermal.h>
28
29 #include "Thermal.h"
30
31 namespace android {
32 namespace hardware {
33 namespace thermal {
34 namespace V1_0 {
35 namespace implementation {
36
37 namespace {
38
finalizeTemperature(float temperature)39 float finalizeTemperature(float temperature) {
40 return temperature == UNKNOWN_TEMPERATURE ? NAN : temperature;
41 }
42
43 }
44
Thermal(thermal_module_t * module)45 Thermal::Thermal(thermal_module_t* module) : mModule(module) {}
46
47 // Methods from ::android::hardware::thermal::V1_0::IThermal follow.
getTemperatures(getTemperatures_cb _hidl_cb)48 Return<void> Thermal::getTemperatures(getTemperatures_cb _hidl_cb) {
49 ThermalStatus status;
50 status.code = ThermalStatusCode::SUCCESS;
51 hidl_vec<Temperature> temperatures;
52
53 if (!mModule || !mModule->getTemperatures) {
54 ALOGI("getTemperatures is not implemented in Thermal HAL.");
55 _hidl_cb(status, temperatures);
56 return Void();
57 }
58
59 ssize_t size = mModule->getTemperatures(mModule, nullptr, 0);
60 if (size >= 0) {
61 std::vector<temperature_t> list;
62 list.resize(size);
63 size = mModule->getTemperatures(mModule, list.data(), list.size());
64 if (size >= 0) {
65 temperatures.resize(list.size());
66 for (size_t i = 0; i < list.size(); ++i) {
67 switch (list[i].type) {
68 case DEVICE_TEMPERATURE_UNKNOWN:
69 temperatures[i].type = TemperatureType::UNKNOWN;
70 break;
71 case DEVICE_TEMPERATURE_CPU:
72 temperatures[i].type = TemperatureType::CPU;
73 break;
74 case DEVICE_TEMPERATURE_GPU:
75 temperatures[i].type = TemperatureType::GPU;
76 break;
77 case DEVICE_TEMPERATURE_BATTERY:
78 temperatures[i].type = TemperatureType::BATTERY;
79 break;
80 case DEVICE_TEMPERATURE_SKIN:
81 temperatures[i].type = TemperatureType::SKIN;
82 break;
83 default:
84 ALOGE("Unknown temperature %s type", list[i].name);
85 ;
86 }
87 temperatures[i].name = list[i].name;
88 temperatures[i].currentValue = finalizeTemperature(list[i].current_value);
89 temperatures[i].throttlingThreshold = finalizeTemperature(list[i].throttling_threshold);
90 temperatures[i].shutdownThreshold = finalizeTemperature(list[i].shutdown_threshold);
91 temperatures[i].vrThrottlingThreshold =
92 finalizeTemperature(list[i].vr_throttling_threshold);
93 }
94 }
95 }
96 if (size < 0) {
97 status.code = ThermalStatusCode::FAILURE;
98 status.debugMessage = strerror(-size);
99 }
100 _hidl_cb(status, temperatures);
101 return Void();
102 }
103
getCpuUsages(getCpuUsages_cb _hidl_cb)104 Return<void> Thermal::getCpuUsages(getCpuUsages_cb _hidl_cb) {
105 ThermalStatus status;
106 hidl_vec<CpuUsage> cpuUsages;
107 status.code = ThermalStatusCode::SUCCESS;
108
109 if (!mModule || !mModule->getCpuUsages) {
110 ALOGI("getCpuUsages is not implemented in Thermal HAL");
111 _hidl_cb(status, cpuUsages);
112 return Void();
113 }
114
115 ssize_t size = mModule->getCpuUsages(mModule, nullptr);
116 if (size >= 0) {
117 std::vector<cpu_usage_t> list;
118 list.resize(size);
119 size = mModule->getCpuUsages(mModule, list.data());
120 if (size >= 0) {
121 list.resize(size);
122 cpuUsages.resize(size);
123 for (size_t i = 0; i < list.size(); ++i) {
124 cpuUsages[i].name = list[i].name;
125 cpuUsages[i].active = list[i].active;
126 cpuUsages[i].total = list[i].total;
127 cpuUsages[i].isOnline = list[i].is_online;
128 }
129 } else {
130 status.code = ThermalStatusCode::FAILURE;
131 status.debugMessage = strerror(-size);
132 }
133 }
134 if (size < 0) {
135 status.code = ThermalStatusCode::FAILURE;
136 status.debugMessage = strerror(-size);
137 }
138 _hidl_cb(status, cpuUsages);
139 return Void();
140 }
141
getCoolingDevices(getCoolingDevices_cb _hidl_cb)142 Return<void> Thermal::getCoolingDevices(getCoolingDevices_cb _hidl_cb) {
143 ThermalStatus status;
144 status.code = ThermalStatusCode::SUCCESS;
145 hidl_vec<CoolingDevice> coolingDevices;
146
147 if (!mModule || !mModule->getCoolingDevices) {
148 ALOGI("getCoolingDevices is not implemented in Thermal HAL.");
149 _hidl_cb(status, coolingDevices);
150 return Void();
151 }
152
153 ssize_t size = mModule->getCoolingDevices(mModule, nullptr, 0);
154 if (size >= 0) {
155 std::vector<cooling_device_t> list;
156 list.resize(size);
157 size = mModule->getCoolingDevices(mModule, list.data(), list.size());
158 if (size >= 0) {
159 list.resize(size);
160 coolingDevices.resize(list.size());
161 for (size_t i = 0; i < list.size(); ++i) {
162 switch (list[i].type) {
163 case FAN_RPM:
164 coolingDevices[i].type = CoolingType::FAN_RPM;
165 break;
166 default:
167 ALOGE("Unknown cooling device %s type", list[i].name);
168 }
169 coolingDevices[i].name = list[i].name;
170 coolingDevices[i].currentValue = list[i].current_value;
171 }
172 }
173 }
174 if (size < 0) {
175 status.code = ThermalStatusCode::FAILURE;
176 status.debugMessage = strerror(-size);
177 }
178 _hidl_cb(status, coolingDevices);
179 return Void();
180 }
181
HIDL_FETCH_IThermal(const char *)182 IThermal* HIDL_FETCH_IThermal(const char* /* name */) {
183 thermal_module_t* module;
184 status_t err = hw_get_module(THERMAL_HARDWARE_MODULE_ID,
185 const_cast<hw_module_t const**>(
186 reinterpret_cast<hw_module_t**>(&module)));
187 if (err || !module) {
188 ALOGE("Couldn't load %s module (%s)", THERMAL_HARDWARE_MODULE_ID,
189 strerror(-err));
190 }
191
192 if (err == 0 && module->common.methods->open) {
193 struct hw_device_t* device;
194 err = module->common.methods->open(&module->common,
195 THERMAL_HARDWARE_MODULE_ID, &device);
196 if (err) {
197 ALOGE("Couldn't open %s module (%s)", THERMAL_HARDWARE_MODULE_ID,
198 strerror(-err));
199 } else {
200 return new Thermal(reinterpret_cast<thermal_module_t*>(device));
201 }
202 }
203 return new Thermal(module);
204 }
205
206 } // namespace implementation
207 } // namespace V1_0
208 } // namespace thermal
209 } // namespace hardware
210 } // namespace android
211