diff options
| author | Vic Yang <victoryang@google.com> | 2012-01-12 17:02:10 +0800 |
|---|---|---|
| committer | Vic Yang <victoryang@google.com> | 2012-02-04 14:37:04 +0800 |
| commit | 000a6d57423e96ffaa2061bd764b8141ea46bb8e (patch) | |
| tree | 528dd0d5f798101470a1d45f9480bc7b2ecebcb0 /chip/lm4/chip_temp_sensor.c | |
| parent | 249467b9f291e2b10a7aafdbb584c68c8b0a4e88 (diff) | |
| download | chrome-ec-000a6d57423e96ffaa2061bd764b8141ea46bb8e.tar.gz | |
Refactor temperature sensor code and add support of Link I2C temp sensor.
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
Diffstat (limited to 'chip/lm4/chip_temp_sensor.c')
| -rw-r--r-- | chip/lm4/chip_temp_sensor.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/chip/lm4/chip_temp_sensor.c b/chip/lm4/chip_temp_sensor.c new file mode 100644 index 0000000000..d810216851 --- /dev/null +++ b/chip/lm4/chip_temp_sensor.c @@ -0,0 +1,24 @@ +/* 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 */ + +#include "adc.h" +#include "board.h" +#include "temp_sensor.h" + +int chip_temp_sensor_read(const struct temp_sensor_t* sensor) +{ + /* LM4 only has internal temperature sensor */ + if (sensor->id != TEMP_SENSOR_EC_INTERNAL) + return EC_ERROR_INVAL; + + return adc_read_channel(ADC_CH_EC_TEMP); +} + +int chip_temp_sensor_init(void) +{ + return EC_SUCCESS; +} |