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https://github.com/Telecominfraproject/OpenCellular.git
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94ef5f3ab3
Factor out fan speed control for easier adjusting fan speed stepping. Also increase number of fan speed steps from 2 to 5. Signed-off-by: Vic Yang <victoryang@google.com> BUG=chrome-os-partner:8466 TEST=Manual test. Change-Id: I0ff601c0a4f2ed2a4867bdc6e550eb2827404754
59 lines
1.7 KiB
C
59 lines
1.7 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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/* Thermal engine module for Chrome EC */
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#ifndef __CROS_EC_THERMAL_H
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#define __CROS_EC_THERMAL_H
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#include "temp_sensor.h"
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#include "util.h"
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#define THERMAL_CONFIG_NO_FLAG 0x0
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#define THERMAL_CONFIG_WARNING_ON_FAIL 0x1
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/* Number of steps for fan speed control. Speed of each step defined
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* in thermal.c */
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#define THERMAL_FAN_STEPS 5
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/* Set a threshold temperature to this value to disable the threshold limit. */
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#define THERMAL_THRESHOLD_DISABLE 0
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/* This macro is used to disable all threshold for a sensor.
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* The value 0 expands to all field in the array 'thresholds'. Change this
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* if THERMAL_THRESHOLD_DISABLE is no longer 0.
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*/
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#define THERMAL_THRESHOLD_DISABLE_ALL 0
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enum thermal_threshold {
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/* Issue overheating warning */
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THRESHOLD_WARNING = 0,
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/* Shut down CPU */
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THRESHOLD_CPU_DOWN,
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/* Shut down everything we can */
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THRESHOLD_POWER_DOWN,
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THRESHOLD_COUNT
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};
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/* Configuration for temperature sensor. Temperature value in degree K. */
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struct thermal_config_t {
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/* Configuration flags. */
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int8_t config_flags;
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/* Threshold temperatures. */
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int16_t thresholds[THRESHOLD_COUNT + THERMAL_FAN_STEPS];
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};
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/* Set the threshold temperature value. Return -1 on error. */
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int thermal_set_threshold(enum temp_sensor_type type, int threshold_id, int value);
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/* Get the threshold temperature value. Return -1 on error. */
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int thermal_get_threshold(enum temp_sensor_type type, int threshold_id);
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/* Toggle automatic fan speed control. Return -1 on error. */
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int thermal_toggle_auto_fan_ctrl(int auto_fan_on);
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#endif /* __CROS_EC_THERMAL_H */
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