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/* Copyright 2022 The Chromium OS Authors. All rights reserved.
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef __AP_PWRSEQ_SIGNAL_ADC_H__
#define __AP_PWRSEQ_SIGNAL_ADC_H__
#define PWR_SIG_TAG_ADC PWR_ADC_
/*
* Generate enums for the analogue converters.
* These enums are only used internally
* to assign an index to each signal that is specific
* to the source.
*/
#define TAG_ADC(tag, name) DT_CAT(tag, name)
#define PWR_ADC_ENUM(id) TAG_ADC(PWR_SIG_TAG_ADC, PWR_SIGNAL_ENUM(id)),
enum pwr_sig_adc {
#if HAS_ADC_SIGNALS
DT_FOREACH_STATUS_OKAY(intel_ap_pwrseq_adc, PWR_ADC_ENUM)
#endif
PWR_SIG_ADC_COUNT
};
#undef PWR_ADC_ENUM
#undef TAG_ADC
/**
* @brief Get the value of the ADC power signal.
*
* The analogue-to-digital converter is used to read an analogue
* value and to convert that via a threshold to a 0/1 signal.
*
* @param adc The enum of the value to get.
* @return the current value of the power signal.
*/
int power_signal_adc_get(enum pwr_sig_adc adc);
/**
* @brief Enable the ADC signal.
*
* This will not only enable the interrupt driven update
* of this signal, but will also enable the ADC itself.
*
* @param signal The pwr_sig_adc to enable.
* @return 0 if successful
* @return -error if failed
*/
int power_signal_adc_enable(enum pwr_sig_adc adc);
/**
* @brief Disable the ADC signal.
*
* This will disable the interrupt updating of this signal, and will
* also disable the ADC from running.
*
* @param signal The pwr_sig_adc to disable.
* @return 0 if successful
* @return -error if failed
*/
int power_signal_adc_disable(enum pwr_sig_adc adc);
/**
* @brief Initialize the ADCs for the power signals.
*/
void power_signal_adc_init(void);
#endif /* __AP_PWRSEQ_SIGNAL_ADC_H__ */
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