thermal/1.0/default/Thermal.cpp

/*
 * Copyright (C) 2016 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 "android.hardware.thermal@1.0-impl"
#include <utils/Log.h>

#include <errno.h>
#include <hardware/hardware.h>
#include <hardware/thermal.h>

#include "Thermal.h"

namespace android {
namespace hardware {
namespace thermal {
namespace V1_0 {
namespace implementation {

Thermal::Thermal(thermal_module_t* module) : mModule(module) {
}

// Methods from ::android::hardware::thermal::V1_0::IThermal follow.
Return<void> Thermal::getTemperatures(getTemperatures_cb _hidl_cb)  {
    ThermalStatus status;
    status.code = ThermalStatusCode::SUCCESS;
    hidl_vec<Temperature> temperatures;

    if (!mModule || !mModule->getTemperatures) {
        ALOGI("getTemperatures is not implemented in Thermal HAL.");
        _hidl_cb(status, temperatures);
        return Void();
    }

    ssize_t list_size = mModule->getTemperatures(mModule, nullptr, 0);
    if (list_size >= 0) {
       temperature_t *list = new temperature_t[list_size];
       ssize_t size = mModule->getTemperatures(mModule, list, list_size);
       if (size >= 0) {
           if (list_size > size) {
               list_size = size;
           }

           temperatures.resize(list_size);
           for (ssize_t i = 0; i < list_size; ++i) {
               switch (list[i].type) {
                   case DEVICE_TEMPERATURE_UNKNOWN:
                       temperatures[i].type = TemperatureType::UNKNOWN;
                       break;
                   case DEVICE_TEMPERATURE_CPU:
                       temperatures[i].type = TemperatureType::CPU;
                       break;
                   case DEVICE_TEMPERATURE_GPU:
                       temperatures[i].type = TemperatureType::GPU;
                       break;
                   case DEVICE_TEMPERATURE_BATTERY:
                       temperatures[i].type = TemperatureType::BATTERY;
                       break;
                   case DEVICE_TEMPERATURE_SKIN:
                       temperatures[i].type = TemperatureType::SKIN;
                       break;
                   default:
                       ALOGE("Unknown temperature %s type", list[i].name);;
               }
               temperatures[i].name = list[i].name;
               temperatures[i].currentValue = list[i].current_value;
               temperatures[i].throttlingThreshold = list[i].throttling_threshold;
               temperatures[i].shutdownThreshold = list[i].shutdown_threshold;
               temperatures[i].vrThrottlingThreshold = list[i].vr_throttling_threshold;
           }
       } else {
           status.code = ThermalStatusCode::FAILURE;
           status.debugMessage = strerror(-size);
       }
       delete[] list;
    } else {
        status.code = ThermalStatusCode::FAILURE;
        status.debugMessage = strerror(-list_size);
    }
    _hidl_cb(status, temperatures);
    return Void();
}

Return<void> Thermal::getCpuUsages(getCpuUsages_cb _hidl_cb)  {
    ThermalStatus status;
    hidl_vec<CpuUsage> cpuUsages;
    status.code = ThermalStatusCode::SUCCESS;

    if (!mModule || !mModule->getCpuUsages) {
        ALOGI("getCpuUsages is not implemented in Thermal HAL");
        _hidl_cb(status, cpuUsages);
        return Void();
    }

    ssize_t size = mModule->getCpuUsages(mModule, nullptr);
    if (size >= 0) {
        cpu_usage_t *list = new cpu_usage_t[size];
        size = mModule->getCpuUsages(mModule, list);
        if (size >= 0) {
            cpuUsages.resize(size);
            for (ssize_t i = 0; i < size; ++i) {
                cpuUsages[i].name = list[i].name;
                cpuUsages[i].active = list[i].active;
                cpuUsages[i].total = list[i].total;
                cpuUsages[i].isOnline = list[i].is_online;
            }
        } else {
            status.code = ThermalStatusCode::FAILURE;
            status.debugMessage = strerror(-size);
        }
        delete[] list;
    } else {
        status.code = ThermalStatusCode::FAILURE;
        status.debugMessage = strerror(-size);
    }
    _hidl_cb(status, cpuUsages);
    return Void();
}

Return<void> Thermal::getCoolingDevices(getCoolingDevices_cb _hidl_cb)  {
    ThermalStatus status;
    status.code = ThermalStatusCode::SUCCESS;
    hidl_vec<CoolingDevice> coolingDevices;

    if (!mModule || !mModule->getCoolingDevices) {
        ALOGI("getCoolingDevices is not implemented in Thermal HAL.");
        _hidl_cb(status, coolingDevices);
        return Void();
    }

    ssize_t list_size = mModule->getCoolingDevices(mModule, nullptr, 0);
    if (list_size >= 0) {
        cooling_device_t *list = new cooling_device_t[list_size];
        ssize_t size = mModule->getCoolingDevices(mModule, list, list_size);
        if (size >= 0) {
            if (list_size > size) {
                list_size = size;
            }
            coolingDevices.resize(list_size);
            for (ssize_t i = 0; i < list_size; ++i) {
                switch (list[i].type) {
                    case FAN_RPM:
                        coolingDevices[i].type = CoolingType::FAN_RPM;
                        break;
                    default:
                        ALOGE("Unknown cooling device %s type", list[i].name);
                }
                coolingDevices[i].name = list[i].name;
                coolingDevices[i].currentValue = list[i].current_value;
            }

        } else {
            status.code = ThermalStatusCode::FAILURE;
            status.debugMessage = strerror(-size);
        }
        delete[] list;
    } else {
        status.code = ThermalStatusCode::FAILURE;
        status.debugMessage = strerror(-list_size);
    }
    _hidl_cb(status, coolingDevices);
    return Void();
}

IThermal* HIDL_FETCH_IThermal(const char* /* name */) {
    thermal_module_t* module;
    status_t err = hw_get_module(THERMAL_HARDWARE_MODULE_ID,
            const_cast<hw_module_t const**>(reinterpret_cast<hw_module_t**>(&module)));
    if (err || !module) {
        ALOGE("Couldn't load %s module (%s)", THERMAL_HARDWARE_MODULE_ID,
              strerror(-err));
    }

    if (err == 0 && module->common.methods->open) {
        struct hw_device_t* device;
        err = module->common.methods->open(&module->common, THERMAL_HARDWARE_MODULE_ID, &device);
        if (err) {
            ALOGE("Couldn't open %s module (%s)", THERMAL_HARDWARE_MODULE_ID, strerror(-err));
        } else {
            return new Thermal(reinterpret_cast<thermal_module_t*>(device));
        }
    }
    return new Thermal(module);
}

} // namespace implementation
}  // namespace V1_0
}  // namespace thermal
}  // namespace hardware
}  // namespace android