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https://github.com/Telecominfraproject/OpenCellular.git
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22e03a1de6
This removes the need for a separate method to check sensor power, and gets rid of temp_sensor.c knowledge of what powers each sensor. BUG=chrome-os-partner:15174 BRANCH=link TEST=manual - reboot - within a second, type 'temps'; I2C sensors should return error 1 - type 'temps' again; all sensors should return data - power off system - type 'temps' again; I2C sensors and PECI should return error 8 - 'gpioset enable_vs 1' - type 'temps' again; I2C sensors should return valid data; PECI should still return error 8. Change-Id: I17c353b3c483bc320769307c7715008ec729089b Signed-off-by: Randall Spangler <rspangler@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/35287 Reviewed-by: Bill Richardson <wfrichar@chromium.org>
55 lines
1.4 KiB
C
55 lines
1.4 KiB
C
/* Copyright (c) 2012 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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/* "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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/* Type of temperature sensors. */
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enum temp_sensor_type {
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/* Ignore this temperature sensor. */
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TEMP_SENSOR_TYPE_IGNORED = -1,
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/* CPU temperature sensors. */
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TEMP_SENSOR_TYPE_CPU = 0,
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/* Other on-board temperature sensors. */
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TEMP_SENSOR_TYPE_BOARD,
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/* Case temperature sensors. */
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TEMP_SENSOR_TYPE_CASE,
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TEMP_SENSOR_TYPE_COUNT
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};
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struct temp_sensor_t {
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const char* name;
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/* Temperature sensor type. */
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enum temp_sensor_type type;
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/* Read sensor value in K into temp_ptr; return non-zero if error. */
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int (*read)(int idx, int *temp_ptr);
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/* Index among the same kind of sensors. */
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int idx;
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/* Delay between reading temperature and taking action about it,
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* in seconds. */
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int action_delay_sec;
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};
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/**
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* Get the most recently measured temperature for the sensor.
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*
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* @param id Sensor ID
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* @param temp_ptr Destination for temperature
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*
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* @return EC_SUCCESS, or non-zero if error.
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*/
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int temp_sensor_read(enum temp_sensor_id id, int *temp_ptr);
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#endif /* __CROS_EC_TEMP_SENSOR_H */
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