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/* Copyright 2020 The ChromiumOS Authors
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
/* IT83xx DAC module for Chrome EC */
#ifndef __CROS_EC_DAC_CHIP_H
#define __CROS_EC_DAC_CHIP_H
#define DAC_AVCC 3300
/*
* Each channel generates an output ranging
* from 0V to AVCC with 8-bit resolution.
*/
#define DAC_RAW_DATA (BIT(8) - 1)
/* List of DAC channels. */
enum chip_dac_channel {
CHIP_DAC_CH2 = 2,
CHIP_DAC_CH3,
CHIP_DAC_CH4,
CHIP_DAC_CH5,
};
/**
* DAC module enable.
*
* @param ch Channel to enable.
*/
void dac_enable_channel(enum chip_dac_channel ch);
/**
* DAC module disable.
*
* @param ch Channel to disable.
*/
void dac_disable_channel(enum chip_dac_channel ch);
/**
* Set DAC output voltage.
*
* @param ch Channel to set.
* @param mv Setting ch output voltage.
*/
void dac_set_output_voltage(enum chip_dac_channel ch, int mv);
/**
* Get DAC output voltage.
*
* @param ch Channel to get.
*
* @return Getting ch output voltage.
*/
int dac_get_output_voltage(enum chip_dac_channel ch);
#endif /* __CROS_EC_DAC_CHIP_H */