34 lines
830 B
C
34 lines
830 B
C
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/* Copyright 2017 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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/* MCHP MEC 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.
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* This must match 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 MCHP_ADC_CH(x) (x)
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#endif /* __CROS_EC_ADC_CHIP_H */
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