path: root/drivers/power/supply/bq25980_charger.c

// SPDX-License-Identifier: GPL-2.0
// BQ25980 Battery Charger Driver
// Copyright (C) 2020 Texas Instruments Incorporated - http://www.ti.com/

#include <linux/err.h>
#include <linux/i2c.h>
#include <linux/init.h>
#include <linux/interrupt.h>
#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/gpio/consumer.h>
#include <linux/power_supply.h>
#include <linux/regmap.h>
#include <linux/types.h>
#include <linux/delay.h>
#include <linux/device.h>
#include <linux/moduleparam.h>
#include <linux/slab.h>

#include "bq25980_charger.h"

struct bq25980_state {
	bool dischg;
	bool ovp;
	bool ocp;
	bool wdt;
	bool tflt;
	bool online;
	bool ce;
	bool hiz;
	bool bypass;

	u32 vbat_adc;
	u32 vsys_adc;
	u32 ibat_adc;
};

enum bq25980_id {
	BQ25980,
	BQ25975,
	BQ25960,
};

struct bq25980_chip_info {

	int model_id;

	const struct regmap_config *regmap_config;

	int busocp_def;
	int busocp_sc_max;
	int busocp_byp_max;
	int busocp_sc_min;
	int busocp_byp_min;

	int busovp_sc_def;
	int busovp_byp_def;
	int busovp_sc_step;

	int busovp_sc_offset;
	int busovp_byp_step;
	int busovp_byp_offset;
	int busovp_sc_min;
	int busovp_sc_max;
	int busovp_byp_min;
	int busovp_byp_max;

	int batovp_def;
	int batovp_max;
	int batovp_min;
	int batovp_step;
	int batovp_offset;

	int batocp_def;
	int batocp_max;
};

struct bq25980_init_data {
	u32 ichg;
	u32 bypass_ilim;
	u32 sc_ilim;
	u32 vreg;
	u32 iterm;
	u32 iprechg;
	u32 bypass_vlim;
	u32 sc_vlim;
	u32 ichg_max;
	u32 vreg_max;
};

struct bq25980_device {
	struct i2c_client *client;
	struct device *dev;
	struct power_supply *charger;
	struct power_supply *battery;
	struct mutex lock;
	struct regmap *regmap;

	char model_name[I2C_NAME_SIZE];

	struct bq25980_init_data init_data;
	const struct bq25980_chip_info *chip_info;
	struct bq25980_state state;
	int watchdog_timer;
};

static struct reg_default bq25980_reg_defs[] = {
	{BQ25980_BATOVP, 0x5A},
	{BQ25980_BATOVP_ALM, 0x46},
	{BQ25980_BATOCP, 0x51},
	{BQ25980_BATOCP_ALM, 0x50},
	{BQ25980_BATUCP_ALM, 0x28},
	{BQ25980_CHRGR_CTRL_1, 0x0},
	{BQ25980_BUSOVP, 0x26},
	{BQ25980_BUSOVP_ALM, 0x22},
	{BQ25980_BUSOCP, 0xD},
	{BQ25980_BUSOCP_ALM, 0xC},
	{BQ25980_TEMP_CONTROL, 0x30},
	{BQ25980_TDIE_ALM, 0xC8},
	{BQ25980_TSBUS_FLT, 0x15},
	{BQ25980_TSBAT_FLG, 0x15},
	{BQ25980_VAC_CONTROL, 0x0},
	{BQ25980_CHRGR_CTRL_2, 0x0},
	{BQ25980_CHRGR_CTRL_3, 0x20},
	{BQ25980_CHRGR_CTRL_4, 0x1D},
	{BQ25980_CHRGR_CTRL_5, 0x18},
	{BQ25980_STAT1, 0x0},
	{BQ25980_STAT2, 0x0},
	{BQ25980_STAT3, 0x0},
	{BQ25980_STAT4, 0x0},
	{BQ25980_STAT5, 0x0}