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2ad076f8a0
Device-specific headers belong in driver/ or chip/. The include/ directory should be for common interfaces. Code should not normally need to include driver-specific headers. If it does, it should use the full relative path from the EC project root (for example, drivers/charger/bq24715.h). Change-Id: Id23db37a431e2d802a74ec601db6f69b613352ba Signed-off-by: Randall Spangler <rspangler@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/173746 Reviewed-by: Bill Richardson <wfrichar@chromium.org>
31 lines
724 B
C
31 lines
724 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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/* Temperature sensor module for Chrome EC */
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#include "adc.h"
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#include "adc_chip.h"
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#include "common.h"
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#include "hooks.h"
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/* Initialize temperature reading to a sane value (27 C) */
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static int last_val = C_TO_K(27);
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static void chip_temp_sensor_poll(void)
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{
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last_val = adc_read_channel(ADC_CH_EC_TEMP);
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}
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DECLARE_HOOK(HOOK_SECOND, chip_temp_sensor_poll, HOOK_PRIO_TEMP_SENSOR);
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int chip_temp_sensor_get_val(int idx, int *temp_ptr)
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{
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if (last_val == ADC_READ_ERROR)
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return EC_ERROR_UNKNOWN;
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*temp_ptr = last_val;
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return EC_SUCCESS;
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}
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