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/* Copyright 2021 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 __CROS_EC_DPS__H
#define __CROS_EC_DPS__H
#include <stdbool.h>
#include "common.h"
/* Dynamic PDO Selection config. */
struct dps_config_t {
/* (0, 100) coeff for transition to a lower power PDO*/
uint32_t k_less_pwr;
/* (0, 100) coeff for transition to a higher power PDO*/
uint32_t k_more_pwr;
/* Number for how many the same consecutive sample to transist */
uint32_t k_sample;
/* Number for moving average window for the power and the current. */
uint32_t k_window;
/* Power stabilized time after a new contract in us */
uint32_t t_stable;
/* Next power evaluation time interval in us */
uint32_t t_check;
/*
* If the current voltage is more efficient than the previous voltage
*
* @param curr_mv: current PDO voltage
* @param prev_mv: previous PDO voltage
* @param batt_mv: battery desired voltage
* @param batt_mw: current battery power
* @param input_mw: current adapter input power
* @return true is curr_mv is more efficient otherwise false
*/
bool (*is_more_efficient)(int curr_mv, int prev_mv, int batt_mv,
int batt_mw, int input_mw);
};
/*
* Get voltage in the current system load
*
* @return a voltage(mV) that the adapter supports to charge at the given port.
*/
int dps_get_dynamic_voltage(void);
/*
* Get DPS charge port
*
* @return the DPS charge port, or CHARGE_PORT_NONE if unavailable.
*/
int dps_get_charge_port(void);
/*
* Check if DPS is enabled.
*
* @return true if enabled, false otherwise.
*/
bool dps_is_enabled(void);
/*
* Update DPS stablized timeout
*
* This is called at the exit of PE_SNK_TRANSITION_SINK
*
* @param port: the port for timer reset.
*/
void dps_update_stabilized_time(int port);
#endif /* __CROS_EC_DPS__H */
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