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Current File : /proc/self/root/usr/src/linux-headers-5.4.0-216/include/linux/mfd/abx500.h
/* SPDX-License-Identifier: GPL-2.0-only */
/*
 * Copyright (C) 2007-2009 ST-Ericsson AB
 *
 * ABX500 core access functions.
 * The abx500 interface is used for the Analog Baseband chips.
 *
 * Author: Mattias Wallin <mattias.wallin@stericsson.com>
 * Author: Mattias Nilsson <mattias.i.nilsson@stericsson.com>
 * Author: Bengt Jonsson <bengt.g.jonsson@stericsson.com>
 * Author: Rickard Andersson <rickard.andersson@stericsson.com>
 */

#include <linux/regulator/machine.h>

struct device;

#ifndef MFD_ABX500_H
#define MFD_ABX500_H

/**
 * struct abx500_init_setting
 * Initial value of the registers for driver to use during setup.
 */
struct abx500_init_settings {
	u8 bank;
	u8 reg;
	u8 setting;
};

/* Battery driver related data */
/*
 * ADC for the battery thermistor.
 * When using the ABx500_ADC_THERM_BATCTRL the battery ID resistor is combined
 * with a NTC resistor to both identify the battery and to measure its
 * temperature. Different phone manufactures uses different techniques to both
 * identify the battery and to read its temperature.
 */
enum abx500_adc_therm {
	ABx500_ADC_THERM_BATCTRL,
	ABx500_ADC_THERM_BATTEMP,
};

/**
 * struct abx500_res_to_temp - defines one point in a temp to res curve. To
 * be used in battery packs that combines the identification resistor with a
 * NTC resistor.
 * @temp:			battery pack temperature in Celsius
 * @resist:			NTC resistor net total resistance
 */
struct abx500_res_to_temp {
	int temp;
	int resist;
};

/**
 * struct abx500_v_to_cap - Table for translating voltage to capacity
 * @voltage:		Voltage in mV
 * @capacity:		Capacity in percent
 */
struct abx500_v_to_cap {
	int voltage;
	int capacity;
};

/* Forward declaration */
struct abx500_fg;

/**
 * struct abx500_fg_parameters - Fuel gauge algorithm parameters, in seconds
 * if not specified
 * @recovery_sleep_timer:	Time between measurements while recovering
 * @recovery_total_time:	Total recovery time
 * @init_timer:			Measurement interval during startup
 * @init_discard_time:		Time we discard voltage measurement at startup
 * @init_total_time:		Total init time during startup
 * @high_curr_time:		Time current has to be high to go to recovery
 * @accu_charging:		FG accumulation time while charging
 * @accu_high_curr:		FG accumulation time in high current mode
 * @high_curr_threshold:	High current threshold, in mA
 * @lowbat_threshold:		Low battery threshold, in mV
 * @overbat_threshold:		Over battery threshold, in mV
 * @battok_falling_th_sel0	Threshold in mV for battOk signal sel0
 *				Resolution in 50 mV step.
 * @battok_raising_th_sel1	Threshold in mV for battOk signal sel1
 *				Resolution in 50 mV step.
 * @user_cap_limit		Capacity reported from user must be within this
 *				limit to be considered as sane, in percentage
 *				points.
 * @maint_thres			This is the threshold where we stop reporting
 *				battery full while in maintenance, in per cent
 * @pcut_enable:			Enable power cut feature in ab8505
 * @pcut_max_time:		Max time threshold
 * @pcut_flag_time:		Flagtime threshold
 * @pcut_max_restart:		Max number of restarts
 * @pcut_debounce_time:		Sets battery debounce time
 */
struct abx500_fg_parameters {
	int recovery_sleep_timer;
	int recovery_total_time;
	int init_timer;
	int init_discard_time;
	int init_total_time;
	int high_curr_time;
	int accu_charging;
	int accu_high_curr;
	int high_curr_threshold;
	int lowbat_threshold;
	int overbat_threshold;
	int battok_falling_th_sel0;
	int battok_raising_th_sel1;
	int user_cap_limit;
	int maint_thres;
	bool pcut_enable;
	u8 pcut_max_time;
	u8 pcut_flag_time;
	u8 pcut_max_restart;
	u8 pcut_debounce_time;
};

/**
 * struct abx500_charger_maximization - struct used by the board config.
 * @use_maxi:		Enable maximization for this battery type
 * @maxi_chg_curr:	Maximum charger current allowed
 * @maxi_wait_cycles:	cycles to wait before setting charger current
 * @charger_curr_step	delta between two charger current settings (mA)
 */
struct abx500_maxim_parameters {
	bool ena_maxi;
	int chg_curr;
	int wait_cycles;
	int charger_curr_step;
};

/**
 * struct abx500_battery_type - different batteries supported
 * @name:			battery technology
 * @resis_high:			battery upper resistance limit
 * @resis_low:			battery lower resistance limit
 * @charge_full_design:		Maximum battery capacity in mAh
 * @nominal_voltage:		Nominal voltage of the battery in mV
 * @termination_vol:		max voltage upto which battery can be charged
 * @termination_curr		battery charging termination current in mA
 * @recharge_cap		battery capacity limit that will trigger a new
 *				full charging cycle in the case where maintenan-
 *				-ce charging has been disabled
 * @normal_cur_lvl:		charger current in normal state in mA
 * @normal_vol_lvl:		charger voltage in normal state in mV
 * @maint_a_cur_lvl:		charger current in maintenance A state in mA
 * @maint_a_vol_lvl:		charger voltage in maintenance A state in mV
 * @maint_a_chg_timer_h:	charge time in maintenance A state
 * @maint_b_cur_lvl:		charger current in maintenance B state in mA
 * @maint_b_vol_lvl:		charger voltage in maintenance B state in mV
 * @maint_b_chg_timer_h:	charge time in maintenance B state
 * @low_high_cur_lvl:		charger current in temp low/high state in mA
 * @low_high_vol_lvl:		charger voltage in temp low/high state in mV'
 * @battery_resistance:		battery inner resistance in mOhm.
 * @n_r_t_tbl_elements:		number of elements in r_to_t_tbl
 * @r_to_t_tbl:			table containing resistance to temp points
 * @n_v_cap_tbl_elements:	number of elements in v_to_cap_tbl
 * @v_to_cap_tbl:		Voltage to capacity (in %) table
 * @n_batres_tbl_elements	number of elements in the batres_tbl
 * @batres_tbl			battery internal resistance vs temperature table
 */
struct abx500_battery_type {
	int name;
	int resis_high;
	int resis_low;
	int charge_full_design;
	int nominal_voltage;
	int termination_vol;
	int termination_curr;
	int recharge_cap;
	int normal_cur_lvl;
	int normal_vol_lvl;
	int maint_a_cur_lvl;
	int maint_a_vol_lvl;
	int maint_a_chg_timer_h;
	int maint_b_cur_lvl;
	int maint_b_vol_lvl;
	int maint_b_chg_timer_h;
	int low_high_cur_lvl;
	int low_high_vol_lvl;
	int battery_resistance;
	int n_temp_tbl_elements;
	const struct abx500_res_to_temp *r_to_t_tbl;
	int n_v_cap_tbl_elements;
	const struct abx500_v_to_cap *v_to_cap_tbl;
	int n_batres_tbl_elements;
	const struct batres_vs_temp *batres_tbl;
};

/**
 * struct abx500_bm_capacity_levels - abx500 capacity level data
 * @critical:		critical capacity level in percent
 * @low:		low capacity level in percent
 * @normal:		normal capacity level in percent
 * @high:		high capacity level in percent
 * @full:		full capacity level in percent
 */
struct abx500_bm_capacity_levels {
	int critical;
	int low;
	int normal;
	int high;
	int full;
};

/**
 * struct abx500_bm_charger_parameters - Charger specific parameters
 * @usb_volt_max:	maximum allowed USB charger voltage in mV
 * @usb_curr_max:	maximum allowed USB charger current in mA
 * @ac_volt_max:	maximum allowed AC charger voltage in mV
 * @ac_curr_max:	maximum allowed AC charger current in mA
 */
struct abx500_bm_charger_parameters {
	int usb_volt_max;
	int usb_curr_max;
	int ac_volt_max;
	int ac_curr_max;
};

/**
 * struct abx500_bm_data - abx500 battery management data
 * @temp_under		under this temp, charging is stopped
 * @temp_low		between this temp and temp_under charging is reduced
 * @temp_high		between this temp and temp_over charging is reduced
 * @temp_over		over this temp, charging is stopped
 * @temp_now		present battery temperature
 * @temp_interval_chg	temperature measurement interval in s when charging
 * @temp_interval_nochg	temperature measurement interval in s when not charging
 * @main_safety_tmr_h	safety timer for main charger
 * @usb_safety_tmr_h	safety timer for usb charger
 * @bkup_bat_v		voltage which we charge the backup battery with
 * @bkup_bat_i		current which we charge the backup battery with
 * @no_maintenance	indicates that maintenance charging is disabled
 * @capacity_scaling    indicates whether capacity scaling is to be used
 * @abx500_adc_therm	placement of thermistor, batctrl or battemp adc
 * @chg_unknown_bat	flag to enable charging of unknown batteries
 * @enable_overshoot	flag to enable VBAT overshoot control
 * @auto_trig		flag to enable auto adc trigger
 * @fg_res		resistance of FG resistor in 0.1mOhm
 * @n_btypes		number of elements in array bat_type
 * @batt_id		index of the identified battery in array bat_type
 * @interval_charging	charge alg cycle period time when charging (sec)
 * @interval_not_charging charge alg cycle period time when not charging (sec)
 * @temp_hysteresis	temperature hysteresis
 * @gnd_lift_resistance	Battery ground to phone ground resistance (mOhm)
 * @n_chg_out_curr		number of elements in array chg_output_curr
 * @n_chg_in_curr		number of elements in array chg_input_curr
 * @chg_output_curr	charger output current level map
 * @chg_input_curr		charger input current level map
 * @maxi		maximization parameters
 * @cap_levels		capacity in percent for the different capacity levels
 * @bat_type		table of supported battery types
 * @chg_params		charger parameters
 * @fg_params		fuel gauge parameters
 */
struct abx500_bm_data {
	int temp_under;
	int temp_low;
	int temp_high;
	int temp_over;
	int temp_now;
	int temp_interval_chg;
	int temp_interval_nochg;
	int main_safety_tmr_h;
	int usb_safety_tmr_h;
	int bkup_bat_v;
	int bkup_bat_i;
	bool autopower_cfg;
	bool ac_enabled;
	bool usb_enabled;
	bool no_maintenance;
	bool capacity_scaling;
	bool chg_unknown_bat;
	bool enable_overshoot;
	bool auto_trig;
	enum abx500_adc_therm adc_therm;
	int fg_res;
	int n_btypes;
	int batt_id;
	int interval_charging;
	int interval_not_charging;
	int temp_hysteresis;
	int gnd_lift_resistance;
	int n_chg_out_curr;
	int n_chg_in_curr;
	int *chg_output_curr;
	int *chg_input_curr;
	const struct abx500_maxim_parameters *maxi;
	const struct abx500_bm_capacity_levels *cap_levels;
	struct abx500_battery_type *bat_type;
	const struct abx500_bm_charger_parameters *chg_params;
	const struct abx500_fg_parameters *fg_params;
};

enum {
	NTC_EXTERNAL = 0,
	NTC_INTERNAL,
};

int ab8500_bm_of_probe(struct device *dev,
		       struct device_node *np,
		       struct abx500_bm_data *bm);

int abx500_set_register_interruptible(struct device *dev, u8 bank, u8 reg,
	u8 value);
int abx500_get_register_interruptible(struct device *dev, u8 bank, u8 reg,
	u8 *value);
int abx500_get_register_page_interruptible(struct device *dev, u8 bank,
	u8 first_reg, u8 *regvals, u8 numregs);
int abx500_set_register_page_interruptible(struct device *dev, u8 bank,
	u8 first_reg, u8 *regvals, u8 numregs);
/**
 * abx500_mask_and_set_register_inerruptible() - Modifies selected bits of a
 *	target register
 *
 * @dev: The AB sub device.
 * @bank: The i2c bank number.
 * @bitmask: The bit mask to use.
 * @bitvalues: The new bit values.
 *
 * Updates the value of an AB register:
 * value -> ((value & ~bitmask) | (bitvalues & bitmask))
 */
int abx500_mask_and_set_register_interruptible(struct device *dev, u8 bank,
	u8 reg, u8 bitmask, u8 bitvalues);
int abx500_get_chip_id(struct device *dev);
int abx500_event_registers_startup_state_get(struct device *dev, u8 *event);
int abx500_startup_irq_enabled(struct device *dev, unsigned int irq);

struct abx500_ops {
	int (*get_chip_id) (struct device *);
	int (*get_register) (struct device *, u8, u8, u8 *);
	int (*set_register) (struct device *, u8, u8, u8);
	int (*get_register_page) (struct device *, u8, u8, u8 *, u8);
	int (*set_register_page) (struct device *, u8, u8, u8 *, u8);
	int (*mask_and_set_register) (struct device *, u8, u8, u8, u8);
	int (*event_registers_startup_state_get) (struct device *, u8 *);
	int (*startup_irq_enabled) (struct device *, unsigned int);
	void (*dump_all_banks) (struct device *);
};

int abx500_register_ops(struct device *core_dev, struct abx500_ops *ops);
void abx500_remove_ops(struct device *dev);
#endif

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