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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.
*/
/*
* OCPC - One Charger IC per Type-C
*/
#ifndef __CROS_EC_OCPC_H_
#define __CROS_EC_OCPC_H_
#include "battery.h"
#define OCPC_UNINIT 0xdededede
struct ocpc_data {
/* Index into chg_chips[] table for the charger IC that is switching. */
int active_chg_chip;
int combined_rsys_rbatt_mo; /* System resistance b/w output and Vbatt */
int rsys_mo; /* System resistance b/w output and VSYS node */
int rbatt_mo; /* Resistance between VSYS node and battery */
/* ADC values */
int primary_vbus_mv; /* VBUS measured by the primary charger IC */
int primary_ibus_ma; /* IBUS measrued by the primary charger IC */
int secondary_vbus_mv; /* VBUS measured by the secondary charger IC */
int secondary_ibus_ma; /* IBUS measure by the secondary charger IC */
int vsys_aux_mv; /* VSYS output measured by aux charger IC */
int vsys_mv; /* VSYS measured by main charger IC */
int isys_ma; /* Egress current measured by aux charger IC */
/* PID values */
int last_error;
int integral;
int last_vsys;
#ifdef HAS_TASK_PD_C1
uint32_t chg_flags[CONFIG_USB_PD_PORT_MAX_COUNT];
#endif /* HAS_TASK_PD_C1 */
};
#define OCPC_NO_ISYS_MEAS_CAP BIT(0)
/** Set the VSYS target for the secondary charger IC.
*
* @param desired_charger_input_current: Pointer to desired_input_current
* @param ocpc: Pointer to OCPC data
* @param desired_batt_current_ma: The desired voltage
* @param desired_batt_voltage_mv: The desired current
* @return EC_SUCCESS on success, error otherwise.
*/
int ocpc_config_secondary_charger(int *desired_charger_input_current,
struct ocpc_data *ocpc,
int desired_batt_voltage_mv,
int desired_batt_current_ma);
/** Get the runtime data from the various ADCs.
*
* @param ocpc: Pointer to OCPC data
*/
void ocpc_get_adcs(struct ocpc_data *ocpc);
/* Set the PID constants for the charging loop */
__override_proto void ocpc_get_pid_constants(int *kp, int *kp_div, int *ki,
int *ki_div, int *kd, int *kd_div);
/*
** Set up some initial values for the OCPC data structure. This will call off
* to board_ocpc_init() such that boards can set up any charger flags if needed.
*
* @param ocpc: Pointer to OCPC data
*/
void ocpc_init(struct ocpc_data *ocpc);
/**
* Reset the OCPC module. This also sets the initial VSYS target to the current
* battery voltage
*
* @param ocpc: Pointer to OCPC data
*/
void ocpc_reset(struct ocpc_data *ocpc);
/**
* Board specific OCPC data structure initialization. This can be used to set
* up and charger flags. The default implementation does nothing.
*
* @param ocpc: Pointer to OCPC data
*/
__override_proto void board_ocpc_init(struct ocpc_data *ocpc);
#ifdef TEST_BUILD
/**
* @brief Force a reload of PID constants by calling ocpc_get_pid_constants().
*/
void ocpc_set_pid_constants(void);
/**
* @brief Return the value of viz_output
*
* @return int
*/
int test_ocpc_get_viz_output(void);
/**
* @brief Return the value of debug_output
*
* @return int
*/
int test_ocpc_get_debug_output(void);
/**
* @brief Reset state used to track resistance calculations.
*/
void test_ocpc_reset_resistance_state(void);
/**
* @brief Calculate the system impedance
*
* @param ocpc OCPC data struct pointer
* @param battery Battery params pointer
* @return enum ec_error_list Success or error code
*/
enum ec_error_list ocpc_calc_resistances(struct ocpc_data *ocpc,
struct batt_params *battery);
#endif
#endif /* __CROS_EC_OCPC_H */
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