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 "android.hardware.thermal@1.0-impl"
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
31namespace android {
32namespace hardware {
33namespace thermal {
34namespace V1_0 {
35namespace implementation {
36
37namespace {
38
39float finalizeTemperature(float temperature) {
40    return temperature == UNKNOWN_TEMPERATURE ? NAN : temperature;
41}
42
43}
44
45Thermal::Thermal(thermal_module_t* module) : mModule(module) {}
46
47// Methods from ::android::hardware::thermal::V1_0::IThermal follow.
48Return<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
104Return<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
142Return<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
182IThermal* 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