linux/drivers/power/supply/ds2782_battery.c

// SPDX-License-Identifier: GPL-2.0-only
/*
 * I2C client/driver for the Maxim/Dallas DS2782 Stand-Alone Fuel Gauge IC
 *
 * Copyright (C) 2009 Bluewater Systems Ltd
 *
 * Author: Ryan Mallon
 *
 * DS2786 added by Yulia Vilensky <[email protected]>
 *
 * UEvent sending added by Evgeny Romanov <[email protected]>
 */

#include <linux/kernel.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/errno.h>
#include <linux/swab.h>
#include <linux/i2c.h>
#include <linux/delay.h>
#include <linux/idr.h>
#include <linux/power_supply.h>
#include <linux/slab.h>
#include <linux/ds2782_battery.h>

#define DS2782_REG_RARC …

#define DS278x_REG_VOLT_MSB …
#define DS278x_REG_TEMP_MSB …
#define DS278x_REG_CURRENT_MSB …

/* EEPROM Block */
#define DS2782_REG_RSNSP …

/* Current unit measurement in uA for a 1 milli-ohm sense resistor */
#define DS2782_CURRENT_UNITS …

#define DS2786_REG_RARC …

#define DS2786_CURRENT_UNITS …

#define DS278x_DELAY …

struct ds278x_info;

struct ds278x_battery_ops { … };

#define to_ds278x_info(x) …

struct ds278x_info { … };

static DEFINE_IDR(battery_id);
static DEFINE_MUTEX(battery_lock);

static inline int ds278x_read_reg(struct ds278x_info *info, int reg, u8 *val)
{ … }

static inline int ds278x_read_reg16(struct ds278x_info *info, int reg_msb,
				    s16 *val)
{ … }

static int ds278x_get_temp(struct ds278x_info *info, int *temp)
{ … }

static int ds2782_get_current(struct ds278x_info *info, int *current_uA)
{ … }

static int ds2782_get_voltage(struct ds278x_info *info, int *voltage_uV)
{ … }

static int ds2782_get_capacity(struct ds278x_info *info, int *capacity)
{ … }

static int ds2786_get_current(struct ds278x_info *info, int *current_uA)
{ … }

static int ds2786_get_voltage(struct ds278x_info *info, int *voltage_uV)
{ … }

static int ds2786_get_capacity(struct ds278x_info *info, int *capacity)
{ … }

static int ds278x_get_status(struct ds278x_info *info, int *status)
{ … }

static int ds278x_battery_get_property(struct power_supply *psy,
				       enum power_supply_property prop,
				       union power_supply_propval *val)
{ … }

static void ds278x_bat_update(struct ds278x_info *info)
{ … }

static void ds278x_bat_work(struct work_struct *work)
{ … }

static enum power_supply_property ds278x_battery_props[] = …;

static void ds278x_power_supply_init(struct power_supply_desc *battery)
{ … }

static void ds278x_battery_remove(struct i2c_client *client)
{ … }

#ifdef CONFIG_PM_SLEEP

static int ds278x_suspend(struct device *dev)
{ … }

static int ds278x_resume(struct device *dev)
{ … }
#endif /* CONFIG_PM_SLEEP */

static SIMPLE_DEV_PM_OPS(ds278x_battery_pm_ops, ds278x_suspend, ds278x_resume);

enum ds278x_num_id { … };

static const struct ds278x_battery_ops ds278x_ops[] = …;

static int ds278x_battery_probe(struct i2c_client *client)
{ … }

static const struct i2c_device_id ds278x_id[] = …;
MODULE_DEVICE_TABLE(i2c, ds278x_id);

static struct i2c_driver ds278x_battery_driver = …;
module_i2c_driver(…) …;

MODULE_AUTHOR(…) …;
MODULE_DESCRIPTION(…) …;
MODULE_LICENSE(…) …;