| // Copyright 2015 The Chromium OS Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| #include "thermald/hwmon_temperature_sensor.h" |
| |
| #include <string> |
| |
| #include "base/check.h" |
| #include "base/files/file_util.h" |
| #include "base/logging.h" |
| #include "base/strings/stringprintf.h" |
| |
| using std::stoi; |
| using std::string; |
| |
| namespace thermald { |
| |
| HwmonTemperatureSensor::HwmonTemperatureSensor(int hwmon_dev_id, int sensor_id, |
| const std::string &name) |
| : TemperatureSensorCommon(name), |
| sysfs_attr_input_(base::StringPrintf( |
| "/sys/class/hwmon/hwmon%d/temp%d_input", hwmon_dev_id, sensor_id)) { |
| } |
| |
| HwmonTemperatureSensor::HwmonTemperatureSensor(int hwmon_dev_id, |
| int sensor_id) |
| : HwmonTemperatureSensor(hwmon_dev_id, sensor_id, |
| base::StringPrintf("hwmon%d.temp%d", hwmon_dev_id, |
| sensor_id)) { |
| } |
| |
| bool HwmonTemperatureSensor::ReadTemperature(int *value) { |
| DCHECK(value); |
| |
| string contents; |
| if (!base::ReadFileToString(sysfs_attr_input_, &contents)) { |
| LOG(ERROR) << "[" << name() << "] Failed to read '" |
| << sysfs_attr_input_.value() << "'"; |
| return false; |
| } |
| |
| *value = stoi(contents); |
| |
| return true; |
| } |
| |
| } // namespace thermald |