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/* Copyright (c) 2011 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.
*/
/* Temperature sensor module for Chrome EC */
#ifndef __CROS_EC_TEMP_SENSOR_H
#define __CROS_EC_TEMP_SENSOR_H
#include "common.h"
#include "board.h"
/* "enum temp_sensor_id" must be defined for each board in board.h. */
struct temp_sensor_t {
const char* name;
enum temp_sensor_id id;
/* Sensor address. Used by read and print functions. */
int addr;
/* Read sensor value and return temperature in K. */
int (*read)(const struct temp_sensor_t* self);
/* Print debug info on console. */
int (*print)(const struct temp_sensor_t* self);
};
/* Dummy value to put in "addr" field in temp_sensor_t if we don't need to
* specify address.
*/
#define TEMP_SENSOR_NO_ADDR 0
/* Dummy value to put in "print" field in temp_sensor_t if we don't have debug
* function for a sensor.
*/
#define TEMP_SENSOR_NO_PRINT 0
/* Initializes the module. */
int temp_sensor_init(void);
/* Returns the most recently measured temperature for the sensor in K,
* or -1 if error. */
int temp_sensor_read(enum temp_sensor_id id);
#define TMP006_ADDR(PORT,REG) ((PORT << 16) + REG)
#define TMP006_PORT(ADDR) (ADDR >> 16)
#define TMP006_REG(ADDR) (ADDR & 0xffff)
/* Read TI TMP006 die temperature sensor. Return temperature in K. */
int temp_sensor_tmp006_read_die_temp(const struct temp_sensor_t* sensor);
/* Read TI TMP006 object temperature sensor. Return temperature in K. */
int temp_sensor_tmp006_read_object_temp(const struct temp_sensor_t* sensor);
/* Configure TMP006 DRDY pin. */
void temp_sensor_tmp006_config(const struct temp_sensor_t* sensor);
/* Print debug messages for TMP006. */
int temp_sensor_tmp006_print(const struct temp_sensor_t* sensor);
#endif /* __CROS_EC_TEMP_SENSOR_H */
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