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Refactor temperature sensor code and add support of Link I2C temp sensor.

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Refactor board/chip-specific code into corresponding directories.
Add support of the four I2C temp sensor in Link.
Use table lookup to handle different types of temperature sensors.

BUG=chrome-os-partner:7527
TEST=Correctly read EC internal temperature on bds.
Compile for link succeeded.

Change-Id: I694cfa54e1545798d877fafdf18c5585ab5f03e2
This commit is contained in:
Vic Yang
2012-01-12 17:02:10 +08:00
parent 249467b9f2
commit 000a6d5742
17 changed files with 440 additions and 29 deletions
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13
include/charger.h Normal file
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@@ -0,0 +1,13 @@
/* Copyright (c) 2012 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.
*/
/* Charger/battery debug command module for Chrome EC */
#ifndef __CROS_EC_CHARGER_H
#define __CROS_EC_CHARGER_H
int charger_init(void);
#endif /* __CROS_EC_CHARGER_H */

20
include/chip_temp_sensor.h Normal file
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@@ -0,0 +1,20 @@
/* Copyright (c) 2012 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 LM4 chip */
#ifndef __CHIP_TEMP_SENSOR_H
#define __CHIP_TEMP_SENSOR_H
struct temp_sensor_t;
/* Temperature reading function. Input pointer to a sensor in temp_sensors.
* Return temperature in K.
*/
int chip_temp_sensor_read(const struct temp_sensor_t* sensor);
int chip_temp_sensor_init(void);
#endif /* __CHIP_TEMP_SENSOR_H */

39
include/temp_sensor.h
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@@ -9,13 +9,30 @@
#define __CROS_EC_TEMP_SENSOR_H
#include "common.h"
#include "board.h"
enum temp_sensor_id {
TEMP_SENSOR_CASE = 0, /* Case temperature */
TEMP_SENSOR_CASE_DIE, /* Case temperature sensor die */
TEMP_SENSOR_EC_INTERNAL, /* EC internal temperature sensor */
/* "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);
@@ -23,4 +40,18 @@ int temp_sensor_init(void);
* 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 temperature sensor. Return temperature in K. */
int temp_sensor_tmp006_read(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 */