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0fefd25c0c
A temperature polling task is added to achieve temporal correction and also reduce the latency of reading temperature. Factor out sensor specific part to keep code clean. Signed-off-by: Vic Yang <victoryang@chromium.org> BUG=chrome-os-partner:7801 TEST=On link, 'temps' shows all temperature readings. Cover each sensor with hand and see object temperature rise. Compilation succeeded on bds/adv/daisy/discovery. Change-Id: I3c44c8b2e3ab2aa9ce640d3fc25e7fba56534b86
33 lines
897 B
C
33 lines
897 B
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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/* PECI module for Chrome EC */
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#ifndef __CROS_EC_PECI_H
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#define __CROS_EC_PECI_H
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#include "common.h"
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struct temp_sensor_t;
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/* Initializes the module. */
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int peci_init(void);
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/* Returns the current CPU temperature in degrees K, or -1 if error.
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*
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* Note that the PECI interface is currently a little flaky; if you get an
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* error, retry a bit later. */
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int peci_get_cpu_temp(void);
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/* Reads the CPU temperature sensor via PECI. This interface is for the
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* temperature sensor module. Returns the temperature in degrees K, or -1 if
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* error. */
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int peci_temp_sensor_get_val(int idx);
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/* Temperature polling of CPU temperature sensor via PECI. */
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int peci_temp_sensor_poll(void);
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#endif /* __CROS_EC_PECI_H */
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