linux/drivers/power/supply/max77693_charger.c

// SPDX-License-Identifier: GPL-2.0+
//
// max77693_charger.c - Battery charger driver for the Maxim 77693
//
// Copyright (C) 2014 Samsung Electronics
// Krzysztof Kozlowski <[email protected]>

#include <linux/module.h>
#include <linux/platform_device.h>
#include <linux/power_supply.h>
#include <linux/regmap.h>
#include <linux/mfd/max77693.h>
#include <linux/mfd/max77693-common.h>
#include <linux/mfd/max77693-private.h>

#define MAX77693_CHARGER_NAME …
static const char *max77693_charger_model		= …;
static const char *max77693_charger_manufacturer	= …;

struct max77693_charger { … };

static int max77693_get_charger_state(struct regmap *regmap, int *val)
{ … }

static int max77693_get_charge_type(struct regmap *regmap, int *val)
{ … }

/*
 * Supported health statuses:
 *  - POWER_SUPPLY_HEALTH_DEAD
 *  - POWER_SUPPLY_HEALTH_GOOD
 *  - POWER_SUPPLY_HEALTH_OVERVOLTAGE
 *  - POWER_SUPPLY_HEALTH_SAFETY_TIMER_EXPIRE
 *  - POWER_SUPPLY_HEALTH_UNKNOWN
 *  - POWER_SUPPLY_HEALTH_UNSPEC_FAILURE
 */
static int max77693_get_battery_health(struct regmap *regmap, int *val)
{ … }

static int max77693_get_present(struct regmap *regmap, int *val)
{ … }

static int max77693_get_online(struct regmap *regmap, int *val)
{ … }

static enum power_supply_property max77693_charger_props[] = …;

static int max77693_charger_get_property(struct power_supply *psy,
			    enum power_supply_property psp,
			    union power_supply_propval *val)
{ … }

static const struct power_supply_desc max77693_charger_desc = …;

static ssize_t device_attr_store(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count,
		int (*fn)(struct max77693_charger *, unsigned long))
{ … }

static ssize_t fast_charge_timer_show(struct device *dev,
		struct device_attribute *attr, char *buf)
{ … }

static int max77693_set_fast_charge_timer(struct max77693_charger *chg,
		unsigned long hours)
{ … }

static ssize_t fast_charge_timer_store(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{ … }

static ssize_t top_off_threshold_current_show(struct device *dev,
		struct device_attribute *attr, char *buf)
{ … }

static int max77693_set_top_off_threshold_current(struct max77693_charger *chg,
		unsigned long uamp)
{ … }

static ssize_t top_off_threshold_current_store(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{ … }

static ssize_t top_off_timer_show(struct device *dev,
		struct device_attribute *attr, char *buf)
{ … }

static int max77693_set_top_off_timer(struct max77693_charger *chg,
		unsigned long minutes)
{ … }

static ssize_t top_off_timer_store(struct device *dev,
		struct device_attribute *attr, const char *buf, size_t count)
{ … }

static DEVICE_ATTR_RW(fast_charge_timer);
static DEVICE_ATTR_RW(top_off_threshold_current);
static DEVICE_ATTR_RW(top_off_timer);

static int max77693_set_constant_volt(struct max77693_charger *chg,
		unsigned int uvolt)
{ … }

static int max77693_set_min_system_volt(struct max77693_charger *chg,
		unsigned int uvolt)
{ … }

static int max77693_set_thermal_regulation_temp(struct max77693_charger *chg,
		unsigned int cels)
{ … }

static int max77693_set_batttery_overcurrent(struct max77693_charger *chg,
		unsigned int uamp)
{ … }

static int max77693_set_charge_input_threshold_volt(struct max77693_charger *chg,
		unsigned int uvolt)
{ … }

/*
 * Sets charger registers to proper and safe default values.
 */
static int max77693_reg_init(struct max77693_charger *chg)
{ … }

#ifdef CONFIG_OF
static int max77693_dt_init(struct device *dev, struct max77693_charger *chg)
{ … }
#else /* CONFIG_OF */
static int max77693_dt_init(struct device *dev, struct max77693_charger *chg)
{
	return 0;
}
#endif /* CONFIG_OF */

static int max77693_charger_probe(struct platform_device *pdev)
{ … }

static void max77693_charger_remove(struct platform_device *pdev)
{ … }

static const struct platform_device_id max77693_charger_id[] = …;
MODULE_DEVICE_TABLE(platform, max77693_charger_id);

static struct platform_driver max77693_charger_driver = …;
module_platform_driver(…) …;

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