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https://github.com/Telecominfraproject/OpenCellular.git
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d2fbdfbc67
Make temp sensor report 0xfd when sensor is unpowered. Also refactor power specification of temp sensors from thermal.c to temp_sensor.c. Signed-off-by: Vic Yang <victoryang@google.com> BUG=chrome-os-partner:8279 TEST=none Change-Id: Ib13813bdbac2f048fbc3b98fae5bbf104ebf37d7
42 lines
1.1 KiB
C
42 lines
1.1 KiB
C
/* Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
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* Use of this source code is governed by a BSD-style license that can be
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* found in the LICENSE file.
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*/
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/* Temperature sensor module for Chrome EC */
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#ifndef __CROS_EC_TEMP_SENSOR_H
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#define __CROS_EC_TEMP_SENSOR_H
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#include "common.h"
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#include "board.h"
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#define TEMP_SENSOR_POWER_NONE 0x0
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#define TEMP_SENSOR_POWER_VS 0x1
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#define TEMP_SENSOR_POWER_CPU 0x2
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/* "enum temp_sensor_id" must be defined for each board in board.h. */
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enum temp_sensor_id;
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struct temp_sensor_t {
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const char* name;
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/* Flags indicating power needed by temp sensor. */
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int8_t power_flags;
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/* Read sensor value and return temperature in K. */
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int (*read)(int idx);
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/* Index among the same kind of sensors. */
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int idx;
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};
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/* Initializes the module. */
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int temp_sensor_init(void);
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/* Returns the most recently measured temperature for the sensor in K,
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* or -1 if error. */
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int temp_sensor_read(enum temp_sensor_id id);
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/* Return non-zero if sensor is powered. */
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int temp_sensor_powered(enum temp_sensor_id id);
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#endif /* __CROS_EC_TEMP_SENSOR_H */
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