// 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.

#ifndef THERMALD_THERMAL_ZONE_TEMPERATURE_SENSOR_H_
#define THERMALD_THERMAL_ZONE_TEMPERATURE_SENSOR_H_

#include <string>

#include "base/macros.h"
#include "base/files/file_path.h"

#include "thermald/temperature_sensor_common.h"

namespace thermald {

// Class to read the temperature from a sensor exposed as a thermal zone
// by the Linux kernel:
//
// https://www.kernel.org/doc/Documentation/thermal/sysfs-api.txt
class ThermalZoneTemperatureSensor : public TemperatureSensorCommon {
 public:
  explicit ThermalZoneTemperatureSensor(int zone_id);
  ThermalZoneTemperatureSensor(int zone_id, const std::string &sensor_name);

  bool ReadTemperature(int *value);

 private:
  const base::FilePath sysfs_attr_path_;

  DISALLOW_COPY_AND_ASSIGN(ThermalZoneTemperatureSensor);
};

}  // namespace thermald

#endif  // THERMALD_THERMAL_ZONE_TEMPERATURE_SENSOR_H_