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3192264679
This gives the AP a way to see that temperature for DPTF. Alarm
thresholds were defined on a per-sensor basis, so they come along for
free.
BUG=chrome-os-partner:25585
BRANCH=rambi
TEST=temps command shows same temp for battery as battery command (other
than rounding error; battery command shows with 0.1C accuracy).
'ectool temps all' shows the battery temp as the last temperature.
Unplug battery and temps command shows error for the battery temp,
as does 'ectool temps all'.
Change-Id: I1bce72f164d9fb1be631e7241a4ea24ddf409d7a
Signed-off-by: Randall Spangler <rspangler@chromium.org>
Reviewed-on: https://chromium-review.googlesource.com/185444
Reviewed-by: Dave Parker <dparker@chromium.org>
64 lines
1.6 KiB
C
64 lines
1.6 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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/* "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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/* Battery temperature sensors. */
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TEMP_SENSOR_TYPE_BATTERY,
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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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#ifdef CONFIG_TEMP_SENSOR
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/*
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* Defined in board_temp_sensor.c. Must be in the same order as
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* in enum temp_sensor_id.
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*/
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extern const struct temp_sensor_t temp_sensors[];
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#endif
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/**
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* Get the most recently measured temperature (in degrees K) 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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