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1b1d2e999c
ADC driver for MEC1322 with ADC interrupt support. BUG=chrome-os-partner:24107 TEST=Read single channel TEST=Read all channels BRANCH=None Change-Id: I89d196c7fd78e736575e2c368b65cfb1ec651004 Signed-off-by: Vic (Chun-Ju) Yang <victoryang@chromium.org> Reviewed-on: https://chromium-review.googlesource.com/180832
34 lines
837 B
C
34 lines
837 B
C
/* Copyright (c) 2013 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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/* MEC1322-specific ADC module for Chrome EC */
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#ifndef __CROS_EC_ADC_CHIP_H
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#define __CROS_EC_ADC_CHIP_H
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/* Data structure to define ADC channels. */
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struct adc_t {
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const char *name;
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int factor_mul;
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int factor_div;
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int shift;
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int channel;
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};
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/*
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* Boards must provide this list of ADC channel definitions. This must match
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* the enum adc_channel list provided by the board.
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*/
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extern const struct adc_t adc_channels[];
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/* Minimum and maximum values returned by adc_read_channel(). */
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#define ADC_READ_MIN 0
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#define ADC_READ_MAX 1023
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/* Just plain id mapping for code readability */
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#define MEC1322_ADC_CH(x) (x)
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#endif /* __CROS_EC_ADC_CHIP_H */
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