linux/drivers/mfd/max8998.c

// SPDX-License-Identifier: GPL-2.0+
//
// max8998.c - mfd core driver for the Maxim 8998
//
//  Copyright (C) 2009-2010 Samsung Electronics
//  Kyungmin Park <[email protected]>
//  Marek Szyprowski <[email protected]>

#include <linux/err.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/interrupt.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/pm_runtime.h>
#include <linux/mutex.h>
#include <linux/mfd/core.h>
#include <linux/mfd/max8998.h>
#include <linux/mfd/max8998-private.h>

#define RTC_I2C_ADDR …

static const struct mfd_cell max8998_devs[] = …;

static const struct mfd_cell lp3974_devs[] = …;

int max8998_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest)
{ … }
EXPORT_SYMBOL(…);

int max8998_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
{ … }
EXPORT_SYMBOL(…);

int max8998_write_reg(struct i2c_client *i2c, u8 reg, u8 value)
{ … }
EXPORT_SYMBOL(…);

int max8998_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
{ … }
EXPORT_SYMBOL(…);

int max8998_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask)
{ … }
EXPORT_SYMBOL(…);

#ifdef CONFIG_OF
static const struct of_device_id max8998_dt_match[] = …;
#endif

/*
 * Only the common platform data elements for max8998 are parsed here from the
 * device tree. Other sub-modules of max8998 such as pmic, rtc and others have
 * to parse their own platform data elements from device tree.
 *
 * The max8998 platform data structure is instantiated here and the drivers for
 * the sub-modules need not instantiate another instance while parsing their
 * platform data.
 */
static struct max8998_platform_data *max8998_i2c_parse_dt_pdata(
							struct device *dev)
{ … }

static int max8998_i2c_probe(struct i2c_client *i2c)
{ … }

static const struct i2c_device_id max8998_i2c_id[] = …;

static int max8998_suspend(struct device *dev)
{ … }

static int max8998_resume(struct device *dev)
{ … }

struct max8998_reg_dump { … };
#define SAVE_ITEM(x) …
static struct max8998_reg_dump max8998_dump[] = …;
/* Save registers before hibernation */
static int max8998_freeze(struct device *dev)
{ … }

/* Restore registers after hibernation */
static int max8998_restore(struct device *dev)
{ … }

static const struct dev_pm_ops max8998_pm = …;

static struct i2c_driver max8998_i2c_driver = …;

static int __init max8998_i2c_init(void)
{ … }
/* init early so consumer devices can complete system boot */
subsys_initcall(max8998_i2c_init);