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https://github.com/Telecominfraproject/OpenCellular.git
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fdd3d90bd7
ADC config structs are now chip-specific; this saves code size (several hundred bytes on LM4, since no need for 24-entry ADC channel to GPIO mapping table). BUG=chrome-os-partner:15579 BRANCH=none TEST='adc' with system on and off; ChargerCurrent should be bigger when on. Change-Id: Ia88b3f043438bec049f2d2ad39fc42dcf86d9424 Signed-off-by: Randall Spangler <rspangler@chromium.org> Reviewed-on: https://gerrit.chromium.org/gerrit/36798
33 lines
702 B
C
33 lines
702 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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/* ADC interface for Chrome EC */
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#ifndef __CROS_EC_ADC_H
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#define __CROS_EC_ADC_H
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#include "common.h"
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/**
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* Read an ADC channel.
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*
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* @param ch Channel to read
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*
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* @return The scaled ADC value, or ADC_READ_ERROR if error.
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*/
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int adc_read_channel(enum adc_channel ch);
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/**
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* Read all ADC channels.
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*
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* @param data Destination array for channel data; must be
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* ADC_CH_COUNT elements long.
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*
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* @return EC_SUCCESS, or non-zero on error.
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*/
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int adc_read_all_channels(int *data);
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#endif /* __CROS_EC_ADC_H */
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