[linux-2.6-block.git] / drivers / mfd / max8997.c

// SPDX-License-Identifier: GPL-2.0+
//
// max8997.c - mfd core driver for the Maxim 8966 and 8997
//
// Copyright (C) 2011 Samsung Electronics
// MyungJoo Ham <myungjoo.ham@samsung.com>
//
// This driver is based on max8998.c

#include <linux/err.h>
#include <linux/slab.h>
#include <linux/i2c.h>
#include <linux/of.h>
#include <linux/of_irq.h>
#include <linux/interrupt.h>
#include <linux/pm_runtime.h>
#include <linux/init.h>
#include <linux/mutex.h>
#include <linux/mfd/core.h>
#include <linux/mfd/max8997.h>
#include <linux/mfd/max8997-private.h>

#define I2C_ADDR_PMIC	(0xCC >> 1)
#define I2C_ADDR_MUIC	(0x4A >> 1)
#define I2C_ADDR_BATTERY	(0x6C >> 1)
#define I2C_ADDR_RTC	(0x0C >> 1)
#define I2C_ADDR_HAPTIC	(0x90 >> 1)

static const struct mfd_cell max8997_devs[] = {
	{ .name = "max8997-pmic", },
	{ .name = "max8997-rtc", },
	{ .name = "max8997-battery", },
	{ .name = "max8997-haptic", },
	{ .name = "max8997-muic", },
	{ .name = "max8997-led", .id = 1 },
	{ .name = "max8997-led", .id = 2 },
};

#ifdef CONFIG_OF
static const struct of_device_id max8997_pmic_dt_match[] = {
	{ .compatible = "maxim,max8997-pmic", .data = (void *)TYPE_MAX8997 },
	{},
};
#endif

int max8997_read_reg(struct i2c_client *i2c, u8 reg, u8 *dest)
{
	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	int ret;

	mutex_lock(&max8997->iolock);
	ret = i2c_smbus_read_byte_data(i2c, reg);
	mutex_unlock(&max8997->iolock);
	if (ret < 0)
		return ret;

	ret &= 0xff;
	*dest = ret;
	return 0;
}
EXPORT_SYMBOL_GPL(max8997_read_reg);

int max8997_bulk_read(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
{
	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	int ret;

	mutex_lock(&max8997->iolock);
	ret = i2c_smbus_read_i2c_block_data(i2c, reg, count, buf);
	mutex_unlock(&max8997->iolock);
	if (ret < 0)
		return ret;

	return 0;
}
EXPORT_SYMBOL_GPL(max8997_bulk_read);

int max8997_write_reg(struct i2c_client *i2c, u8 reg, u8 value)
{
	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	int ret;

	mutex_lock(&max8997->iolock);
	ret = i2c_smbus_write_byte_data(i2c, reg, value);
	mutex_unlock(&max8997->iolock);
	return ret;
}
EXPORT_SYMBOL_GPL(max8997_write_reg);

int max8997_bulk_write(struct i2c_client *i2c, u8 reg, int count, u8 *buf)
{
	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	int ret;

	mutex_lock(&max8997->iolock);
	ret = i2c_smbus_write_i2c_block_data(i2c, reg, count, buf);
	mutex_unlock(&max8997->iolock);
	if (ret < 0)
		return ret;

	return 0;
}
EXPORT_SYMBOL_GPL(max8997_bulk_write);

int max8997_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask)
{
	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	int ret;

	mutex_lock(&max8997->iolock);
	ret = i2c_smbus_read_byte_data(i2c, reg);
	if (ret >= 0) {
		u8 old_val = ret & 0xff;
		u8 new_val = (val & mask) | (old_val & (~mask));
		ret = i2c_smbus_write_byte_data(i2c, reg, new_val);
	}
	mutex_unlock(&max8997->iolock);
	return ret;
}
EXPORT_SYMBOL_GPL(max8997_update_reg);

/*
 * Only the common platform data elements for max8997 are parsed here from the
 * device tree. Other sub-modules of max8997 such as pmic, rtc and others have
 * to parse their own platform data elements from device tree.
 *
 * The max8997 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 max8997_platform_data *max8997_i2c_parse_dt_pdata(
					struct device *dev)
{
	struct max8997_platform_data *pd;

	pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
	if (!pd)
		return ERR_PTR(-ENOMEM);

	pd->ono = irq_of_parse_and_map(dev->of_node, 1);

	return pd;
}

static inline unsigned long max8997_i2c_get_driver_data(struct i2c_client *i2c,
						const struct i2c_device_id *id)
{
	if (IS_ENABLED(CONFIG_OF) && i2c->dev.of_node) {
		const struct of_device_id *match;
		match = of_match_node(max8997_pmic_dt_match, i2c->dev.of_node);
		return (unsigned long)match->data;
	}
	return id->driver_data;
}

static int max8997_i2c_probe(struct i2c_client *i2c,
			    const struct i2c_device_id *id)
{
	struct max8997_dev *max8997;
	struct max8997_platform_data *pdata = dev_get_platdata(&i2c->dev);
	int ret = 0;

	max8997 = devm_kzalloc(&i2c->dev, sizeof(struct max8997_dev),
				GFP_KERNEL);
	if (max8997 == NULL)
		return -ENOMEM;

	i2c_set_clientdata(i2c, max8997);
	max8997->dev = &i2c->dev;
	max8997->i2c = i2c;
	max8997->type = max8997_i2c_get_driver_data(i2c, id);
	max8997->irq = i2c->irq;

	if (IS_ENABLED(CONFIG_OF) && max8997->dev->of_node) {
		pdata = max8997_i2c_parse_dt_pdata(max8997->dev);
		if (IS_ERR(pdata))
			return PTR_ERR(pdata);
	}

	if (!pdata)
		return ret;

	max8997->pdata = pdata;
	max8997->ono = pdata->ono;

	mutex_init(&max8997->iolock);

	max8997->rtc = i2c_new_dummy(i2c->adapter, I2C_ADDR_RTC);
	if (!max8997->rtc) {
		dev_err(max8997->dev, "Failed to allocate I2C device for RTC\n");
		return -ENODEV;
	}
	i2c_set_clientdata(max8997->rtc, max8997);

	max8997->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);
	if (!max8997->haptic) {
		dev_err(max8997->dev, "Failed to allocate I2C device for Haptic\n");
		ret = -ENODEV;
		goto err_i2c_haptic;
	}
	i2c_set_clientdata(max8997->haptic, max8997);

	max8997->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);
	if (!max8997->muic) {
		dev_err(max8997->dev, "Failed to allocate I2C device for MUIC\n");
		ret = -ENODEV;
		goto err_i2c_muic;
	}
	i2c_set_clientdata(max8997->muic, max8997);

	pm_runtime_set_active(max8997->dev);

	max8997_irq_init(max8997);

	ret = mfd_add_devices(max8997->dev, -1, max8997_devs,
			ARRAY_SIZE(max8997_devs),
			NULL, 0, NULL);
	if (ret < 0) {
		dev_err(max8997->dev, "failed to add MFD devices %d\n", ret);
		goto err_mfd;
	}

	/*
	 * TODO: enable others (flash, muic, rtc, battery, ...) and
	 * check the return value
	 */

	/* MAX8997 has a power button input. */
	device_init_wakeup(max8997->dev, true);

	return ret;

err_mfd:
	mfd_remove_devices(max8997->dev);
	i2c_unregister_device(max8997->muic);
err_i2c_muic:
	i2c_unregister_device(max8997->haptic);
err_i2c_haptic:
	i2c_unregister_device(max8997->rtc);
	return ret;
}

static const struct i2c_device_id max8997_i2c_id[] = {
	{ "max8997", TYPE_MAX8997 },
	{ "max8966", TYPE_MAX8966 },
	{ }
};

static u8 max8997_dumpaddr_pmic[] = {
	MAX8997_REG_INT1MSK,
	MAX8997_REG_INT2MSK,
	MAX8997_REG_INT3MSK,
	MAX8997_REG_INT4MSK,
	MAX8997_REG_MAINCON1,
	MAX8997_REG_MAINCON2,
	MAX8997_REG_BUCKRAMP,
	MAX8997_REG_BUCK1CTRL,
	MAX8997_REG_BUCK1DVS1,
	MAX8997_REG_BUCK1DVS2,
	MAX8997_REG_BUCK1DVS3,
	MAX8997_REG_BUCK1DVS4,
	MAX8997_REG_BUCK1DVS5,
	MAX8997_REG_BUCK1DVS6,
	MAX8997_REG_BUCK1DVS7,
	MAX8997_REG_BUCK1DVS8,
	MAX8997_REG_BUCK2CTRL,
	MAX8997_REG_BUCK2DVS1,
	MAX8997_REG_BUCK2DVS2,
	MAX8997_REG_BUCK2DVS3,
	MAX8997_REG_BUCK2DVS4,
	MAX8997_REG_BUCK2DVS5,
	MAX8997_REG_BUCK2DVS6,
	MAX8997_REG_BUCK2DVS7,
	MAX8997_REG_BUCK2DVS8,
	MAX8997_REG_BUCK3CTRL,
	MAX8997_REG_BUCK3DVS,
	MAX8997_REG_BUCK4CTRL,
	MAX8997_REG_BUCK4DVS,
	MAX8997_REG_BUCK5CTRL,
	MAX8997_REG_BUCK5DVS1,
	MAX8997_REG_BUCK5DVS2,
	MAX8997_REG_BUCK5DVS3,
	MAX8997_REG_BUCK5DVS4,
	MAX8997_REG_BUCK5DVS5,
	MAX8997_REG_BUCK5DVS6,
	MAX8997_REG_BUCK5DVS7,
	MAX8997_REG_BUCK5DVS8,
	MAX8997_REG_BUCK6CTRL,
	MAX8997_REG_BUCK6BPSKIPCTRL,
	MAX8997_REG_BUCK7CTRL,
	MAX8997_REG_BUCK7DVS,
	MAX8997_REG_LDO1CTRL,
	MAX8997_REG_LDO2CTRL,
	MAX8997_REG_LDO3CTRL,
	MAX8997_REG_LDO4CTRL,
	MAX8997_REG_LDO5CTRL,
	MAX8997_REG_LDO6CTRL,
	MAX8997_REG_LDO7CTRL,
	MAX8997_REG_LDO8CTRL,
	MAX8997_REG_LDO9CTRL,
	MAX8997_REG_LDO10CTRL,
	MAX8997_REG_LDO11CTRL,
	MAX8997_REG_LDO12CTRL,
	MAX8997_REG_LDO13CTRL,
	MAX8997_REG_LDO14CTRL,
	MAX8997_REG_LDO15CTRL,
	MAX8997_REG_LDO16CTRL,
	MAX8997_REG_LDO17CTRL,
	MAX8997_REG_LDO18CTRL,
	MAX8997_REG_LDO21CTRL,
	MAX8997_REG_MBCCTRL1,
	MAX8997_REG_MBCCTRL2,
	MAX8997_REG_MBCCTRL3,
	MAX8997_REG_MBCCTRL4,
	MAX8997_REG_MBCCTRL5,
	MAX8997_REG_MBCCTRL6,
	MAX8997_REG_OTPCGHCVS,
	MAX8997_REG_SAFEOUTCTRL,
	MAX8997_REG_LBCNFG1,
	MAX8997_REG_LBCNFG2,
	MAX8997_REG_BBCCTRL,

	MAX8997_REG_FLASH1_CUR,
	MAX8997_REG_FLASH2_CUR,
	MAX8997_REG_MOVIE_CUR,
	MAX8997_REG_GSMB_CUR,
	MAX8997_REG_BOOST_CNTL,
	MAX8997_REG_LEN_CNTL,
	MAX8997_REG_FLASH_CNTL,
	MAX8997_REG_WDT_CNTL,
	MAX8997_REG_MAXFLASH1,
	MAX8997_REG_MAXFLASH2,
	MAX8997_REG_FLASHSTATUSMASK,

	MAX8997_REG_GPIOCNTL1,
	MAX8997_REG_GPIOCNTL2,
	MAX8997_REG_GPIOCNTL3,
	MAX8997_REG_GPIOCNTL4,
	MAX8997_REG_GPIOCNTL5,
	MAX8997_REG_GPIOCNTL6,
	MAX8997_REG_GPIOCNTL7,
	MAX8997_REG_GPIOCNTL8,
	MAX8997_REG_GPIOCNTL9,
	MAX8997_REG_GPIOCNTL10,
	MAX8997_REG_GPIOCNTL11,
	MAX8997_REG_GPIOCNTL12,

	MAX8997_REG_LDO1CONFIG,
	MAX8997_REG_LDO2CONFIG,
	MAX8997_REG_LDO3CONFIG,
	MAX8997_REG_LDO4CONFIG,
	MAX8997_REG_LDO5CONFIG,
	MAX8997_REG_LDO6CONFIG,
	MAX8997_REG_LDO7CONFIG,
	MAX8997_REG_LDO8CONFIG,
	MAX8997_REG_LDO9CONFIG,
	MAX8997_REG_LDO10CONFIG,
	MAX8997_REG_LDO11CONFIG,
	MAX8997_REG_LDO12CONFIG,
	MAX8997_REG_LDO13CONFIG,
	MAX8997_REG_LDO14CONFIG,
	MAX8997_REG_LDO15CONFIG,
	MAX8997_REG_LDO16CONFIG,
	MAX8997_REG_LDO17CONFIG,
	MAX8997_REG_LDO18CONFIG,
	MAX8997_REG_LDO21CONFIG,

	MAX8997_REG_DVSOKTIMER1,
	MAX8997_REG_DVSOKTIMER2,
	MAX8997_REG_DVSOKTIMER4,
	MAX8997_REG_DVSOKTIMER5,
};

static u8 max8997_dumpaddr_muic[] = {
	MAX8997_MUIC_REG_INTMASK1,
	MAX8997_MUIC_REG_INTMASK2,
	MAX8997_MUIC_REG_INTMASK3,
	MAX8997_MUIC_REG_CDETCTRL,
	MAX8997_MUIC_REG_CONTROL1,
	MAX8997_MUIC_REG_CONTROL2,
	MAX8997_MUIC_REG_CONTROL3,
};

static u8 max8997_dumpaddr_haptic[] = {
	MAX8997_HAPTIC_REG_CONF1,
	MAX8997_HAPTIC_REG_CONF2,
	MAX8997_HAPTIC_REG_DRVCONF,
	MAX8997_HAPTIC_REG_CYCLECONF1,
	MAX8997_HAPTIC_REG_CYCLECONF2,
	MAX8997_HAPTIC_REG_SIGCONF1,
	MAX8997_HAPTIC_REG_SIGCONF2,
	MAX8997_HAPTIC_REG_SIGCONF3,
	MAX8997_HAPTIC_REG_SIGCONF4,
	MAX8997_HAPTIC_REG_SIGDC1,
	MAX8997_HAPTIC_REG_SIGDC2,
	MAX8997_HAPTIC_REG_SIGPWMDC1,
	MAX8997_HAPTIC_REG_SIGPWMDC2,
	MAX8997_HAPTIC_REG_SIGPWMDC3,
	MAX8997_HAPTIC_REG_SIGPWMDC4,
};

static int max8997_freeze(struct device *dev)
{
	struct i2c_client *i2c = to_i2c_client(dev);
	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	int i;

	for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_pmic); i++)
		max8997_read_reg(i2c, max8997_dumpaddr_pmic[i],
				&max8997->reg_dump[i]);

	for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++)
		max8997_read_reg(i2c, max8997_dumpaddr_muic[i],
				&max8997->reg_dump[i + MAX8997_REG_PMIC_END]);

	for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++)
		max8997_read_reg(i2c, max8997_dumpaddr_haptic[i],
				&max8997->reg_dump[i + MAX8997_REG_PMIC_END +
				MAX8997_MUIC_REG_END]);

	return 0;
}

static int max8997_restore(struct device *dev)
{
	struct i2c_client *i2c = to_i2c_client(dev);
	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	int i;

	for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_pmic); i++)
		max8997_write_reg(i2c, max8997_dumpaddr_pmic[i],
				max8997->reg_dump[i]);

	for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++)
		max8997_write_reg(i2c, max8997_dumpaddr_muic[i],
				max8997->reg_dump[i + MAX8997_REG_PMIC_END]);

	for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++)
		max8997_write_reg(i2c, max8997_dumpaddr_haptic[i],
				max8997->reg_dump[i + MAX8997_REG_PMIC_END +
				MAX8997_MUIC_REG_END]);

	return 0;
}

static int max8997_suspend(struct device *dev)
{
	struct i2c_client *i2c = to_i2c_client(dev);
	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);

	disable_irq(max8997->irq);
	if (device_may_wakeup(dev))
		irq_set_irq_wake(max8997->irq, 1);
	return 0;
}

static int max8997_resume(struct device *dev)
{
	struct i2c_client *i2c = to_i2c_client(dev);
	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);

	if (device_may_wakeup(dev))
		irq_set_irq_wake(max8997->irq, 0);
	enable_irq(max8997->irq);
	return max8997_irq_resume(max8997);
}

static const struct dev_pm_ops max8997_pm = {
	.suspend = max8997_suspend,
	.resume = max8997_resume,
	.freeze = max8997_freeze,
	.restore = max8997_restore,
};

static struct i2c_driver max8997_i2c_driver = {
	.driver = {
		   .name = "max8997",
		   .pm = &max8997_pm,
		   .suppress_bind_attrs = true,
		   .of_match_table = of_match_ptr(max8997_pmic_dt_match),
	},
	.probe = max8997_i2c_probe,
	.id_table = max8997_i2c_id,
};

static int __init max8997_i2c_init(void)
{
	return i2c_add_driver(&max8997_i2c_driver);
}
/* init early so consumer devices can complete system boot */
subsys_initcall(max8997_i2c_init);
Commit	Line	Data
d7d8d7a2 KK	1	// SPDX-License-Identifier: GPL-2.0+
	2	//
	3	// max8997.c - mfd core driver for the Maxim 8966 and 8997
	4	//
	5	// Copyright (C) 2011 Samsung Electronics
	6	// MyungJoo Ham <myungjoo.ham@samsung.com>
	7	//
	8	// This driver is based on max8998.c
527e7e9a	9
77b71b37	10	#include <linux/err.h>
527e7e9a MH	11	#include <linux/slab.h>
527e7e9a MH	12	#include <linux/i2c.h>
fb7d4a53	13	#include <linux/of.h>
77b71b37	14	#include <linux/of_irq.h>
01fdaab8	15	#include <linux/interrupt.h>
527e7e9a	16	#include <linux/pm_runtime.h>
9cf0c21f	17	#include <linux/init.h>
527e7e9a MH	18	#include <linux/mutex.h>
	19	#include <linux/mfd/core.h>
	20	#include <linux/mfd/max8997.h>
	21	#include <linux/mfd/max8997-private.h>
	22
	23	#define I2C_ADDR_PMIC (0xCC >> 1)
	24	#define I2C_ADDR_MUIC (0x4A >> 1)
	25	#define I2C_ADDR_BATTERY (0x6C >> 1)
	26	#define I2C_ADDR_RTC (0x0C >> 1)
	27	#define I2C_ADDR_HAPTIC (0x90 >> 1)
	28
7c0517b1	29	static const struct mfd_cell max8997_devs[] = {
527e7e9a MH	30	{ .name = "max8997-pmic", },
	31	{ .name = "max8997-rtc", },
	32	{ .name = "max8997-battery", },
	33	{ .name = "max8997-haptic", },
	34	{ .name = "max8997-muic", },
f6dd2db9 DK	35	{ .name = "max8997-led", .id = 1 },
f6dd2db9 DK	36	{ .name = "max8997-led", .id = 2 },
527e7e9a MH	37	};
527e7e9a MH	38
77b71b37	39	#ifdef CONFIG_OF
f1eb2cb8	40	static const struct of_device_id max8997_pmic_dt_match[] = {
ed6ccdc6	41	{ .compatible = "maxim,max8997-pmic", .data = (void *)TYPE_MAX8997 },
77b71b37 TA	42	{},
	43	};
	44	#endif
	45
527e7e9a MH	46	int max8997_read_reg(struct i2c_client i2c, u8 reg, u8 dest)
	47	{
	48	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	49	int ret;
	50
	51	mutex_lock(&max8997->iolock);
	52	ret = i2c_smbus_read_byte_data(i2c, reg);
	53	mutex_unlock(&max8997->iolock);
	54	if (ret < 0)
	55	return ret;
	56
	57	ret &= 0xff;
	58	*dest = ret;
	59	return 0;
	60	}
	61	EXPORT_SYMBOL_GPL(max8997_read_reg);
	62
	63	int max8997_bulk_read(struct i2c_client i2c, u8 reg, int count, u8 buf)
	64	{
	65	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	66	int ret;
	67
	68	mutex_lock(&max8997->iolock);
	69	ret = i2c_smbus_read_i2c_block_data(i2c, reg, count, buf);
	70	mutex_unlock(&max8997->iolock);
	71	if (ret < 0)
	72	return ret;
	73
	74	return 0;
	75	}
	76	EXPORT_SYMBOL_GPL(max8997_bulk_read);
	77
	78	int max8997_write_reg(struct i2c_client *i2c, u8 reg, u8 value)
	79	{
	80	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	81	int ret;
	82
	83	mutex_lock(&max8997->iolock);
	84	ret = i2c_smbus_write_byte_data(i2c, reg, value);
	85	mutex_unlock(&max8997->iolock);
	86	return ret;
	87	}
	88	EXPORT_SYMBOL_GPL(max8997_write_reg);
	89
	90	int max8997_bulk_write(struct i2c_client i2c, u8 reg, int count, u8 buf)
	91	{
	92	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	93	int ret;
	94
	95	mutex_lock(&max8997->iolock);
	96	ret = i2c_smbus_write_i2c_block_data(i2c, reg, count, buf);
	97	mutex_unlock(&max8997->iolock);
	98	if (ret < 0)
	99	return ret;
	100
	101	return 0;
	102	}
	103	EXPORT_SYMBOL_GPL(max8997_bulk_write);
	104
	105	int max8997_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask)
	106	{
	107	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	108	int ret;
	109
110	mutex_lock(&max8997->iolock);
111	ret = i2c_smbus_read_byte_data(i2c, reg);
112	if (ret >= 0) {
113	u8 old_val = ret & 0xff;
114	u8 new_val = (val & mask) \| (old_val & (~mask));
115	ret = i2c_smbus_write_byte_data(i2c, reg, new_val);
116	}
117	mutex_unlock(&max8997->iolock);
118	return ret;
119	}
120	EXPORT_SYMBOL_GPL(max8997_update_reg);
121
77b71b37 TA	122	/*
	123	* Only the common platform data elements for max8997 are parsed here from the
	124	* device tree. Other sub-modules of max8997 such as pmic, rtc and others have
	125	* to parse their own platform data elements from device tree.
	126	*
	127	* The max8997 platform data structure is instantiated here and the drivers for
	128	* the sub-modules need not instantiate another instance while parsing their
	129	* platform data.
	130	*/
	131	static struct max8997_platform_data *max8997_i2c_parse_dt_pdata(
	132	struct device *dev)
	133	{
	134	struct max8997_platform_data *pd;
	135
	136	pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
f01b90b2	137	if (!pd)
77b71b37	138	return ERR_PTR(-ENOMEM);
77b71b37 TA	139
	140	pd->ono = irq_of_parse_and_map(dev->of_node, 1);
	141
77b71b37 TA	142	return pd;
77b71b37 TA	143	}
77b71b37	144
05fb7a56	145	static inline unsigned long max8997_i2c_get_driver_data(struct i2c_client *i2c,
77b71b37 TA	146	const struct i2c_device_id *id)
77b71b37 TA	147	{
01c3f110	148	if (IS_ENABLED(CONFIG_OF) && i2c->dev.of_node) {
77b71b37 TA	149	const struct of_device_id *match;
77b71b37 TA	150	match = of_match_node(max8997_pmic_dt_match, i2c->dev.of_node);
05fb7a56	151	return (unsigned long)match->data;
77b71b37	152	}
05fb7a56	153	return id->driver_data;
77b71b37 TA	154	}
77b71b37 TA	155
527e7e9a MH	156	static int max8997_i2c_probe(struct i2c_client *i2c,
	157	const struct i2c_device_id *id)
	158	{
	159	struct max8997_dev *max8997;
334a41ce	160	struct max8997_platform_data *pdata = dev_get_platdata(&i2c->dev);
527e7e9a MH	161	int ret = 0;
527e7e9a MH	162
6922ffcf JH	163	max8997 = devm_kzalloc(&i2c->dev, sizeof(struct max8997_dev),
6922ffcf JH	164	GFP_KERNEL);
527e7e9a MH	165	if (max8997 == NULL)
	166	return -ENOMEM;
	167
	168	i2c_set_clientdata(i2c, max8997);
	169	max8997->dev = &i2c->dev;
	170	max8997->i2c = i2c;
77b71b37	171	max8997->type = max8997_i2c_get_driver_data(i2c, id);
7eb3154e	172	max8997->irq = i2c->irq;
527e7e9a	173
01c3f110	174	if (IS_ENABLED(CONFIG_OF) && max8997->dev->of_node) {
77b71b37	175	pdata = max8997_i2c_parse_dt_pdata(max8997->dev);
6922ffcf JH	176	if (IS_ERR(pdata))
6922ffcf JH	177	return PTR_ERR(pdata);
77b71b37 TA	178	}
77b71b37 TA	179
527e7e9a	180	if (!pdata)
6922ffcf	181	return ret;
527e7e9a	182
77b71b37	183	max8997->pdata = pdata;
7eb3154e	184	max8997->ono = pdata->ono;
527e7e9a MH	185
	186	mutex_init(&max8997->iolock);
	187
	188	max8997->rtc = i2c_new_dummy(i2c->adapter, I2C_ADDR_RTC);
97dc4ed3 KK	189	if (!max8997->rtc) {
	190	dev_err(max8997->dev, "Failed to allocate I2C device for RTC\n");
	191	return -ENODEV;
	192	}
527e7e9a	193	i2c_set_clientdata(max8997->rtc, max8997);
97dc4ed3	194
527e7e9a	195	max8997->haptic = i2c_new_dummy(i2c->adapter, I2C_ADDR_HAPTIC);
97dc4ed3 KK	196	if (!max8997->haptic) {
	197	dev_err(max8997->dev, "Failed to allocate I2C device for Haptic\n");
	198	ret = -ENODEV;
	199	goto err_i2c_haptic;
	200	}
527e7e9a	201	i2c_set_clientdata(max8997->haptic, max8997);
97dc4ed3	202
527e7e9a	203	max8997->muic = i2c_new_dummy(i2c->adapter, I2C_ADDR_MUIC);
97dc4ed3 KK	204	if (!max8997->muic) {
	205	dev_err(max8997->dev, "Failed to allocate I2C device for MUIC\n");
	206	ret = -ENODEV;
	207	goto err_i2c_muic;
	208	}
527e7e9a MH	209	i2c_set_clientdata(max8997->muic, max8997);
	210
	211	pm_runtime_set_active(max8997->dev);
	212
7eb3154e MH	213	max8997_irq_init(max8997);
7eb3154e MH	214
c1ec8fc3	215	ret = mfd_add_devices(max8997->dev, -1, max8997_devs,
527e7e9a	216	ARRAY_SIZE(max8997_devs),
0848c94f	217	NULL, 0, NULL);
c1ec8fc3 LP	218	if (ret < 0) {
	219	dev_err(max8997->dev, "failed to add MFD devices %d\n", ret);
	220	goto err_mfd;
	221	}
527e7e9a MH	222
	223	/*
	224	* TODO: enable others (flash, muic, rtc, battery, ...) and
	225	* check the return value
	226	*/
	227
01fdaab8	228	/* MAX8997 has a power button input. */
efddff27	229	device_init_wakeup(max8997->dev, true);
01fdaab8	230
527e7e9a MH	231	return ret;
	232
	233	err_mfd:
	234	mfd_remove_devices(max8997->dev);
	235	i2c_unregister_device(max8997->muic);
97dc4ed3	236	err_i2c_muic:
527e7e9a	237	i2c_unregister_device(max8997->haptic);
97dc4ed3	238	err_i2c_haptic:
527e7e9a	239	i2c_unregister_device(max8997->rtc);
527e7e9a MH	240	return ret;
	241	}
	242
527e7e9a MH	243	static const struct i2c_device_id max8997_i2c_id[] = {
	244	{ "max8997", TYPE_MAX8997 },
	245	{ "max8966", TYPE_MAX8966 },
	246	{ }
	247	};
527e7e9a	248
b673e24c	249	static u8 max8997_dumpaddr_pmic[] = {
527e7e9a MH	250	MAX8997_REG_INT1MSK,
	251	MAX8997_REG_INT2MSK,
	252	MAX8997_REG_INT3MSK,
	253	MAX8997_REG_INT4MSK,
	254	MAX8997_REG_MAINCON1,
	255	MAX8997_REG_MAINCON2,
	256	MAX8997_REG_BUCKRAMP,
	257	MAX8997_REG_BUCK1CTRL,
	258	MAX8997_REG_BUCK1DVS1,
	259	MAX8997_REG_BUCK1DVS2,
	260	MAX8997_REG_BUCK1DVS3,
	261	MAX8997_REG_BUCK1DVS4,
	262	MAX8997_REG_BUCK1DVS5,
	263	MAX8997_REG_BUCK1DVS6,
	264	MAX8997_REG_BUCK1DVS7,
	265	MAX8997_REG_BUCK1DVS8,
	266	MAX8997_REG_BUCK2CTRL,
	267	MAX8997_REG_BUCK2DVS1,
	268	MAX8997_REG_BUCK2DVS2,
	269	MAX8997_REG_BUCK2DVS3,
	270	MAX8997_REG_BUCK2DVS4,
	271	MAX8997_REG_BUCK2DVS5,
	272	MAX8997_REG_BUCK2DVS6,
	273	MAX8997_REG_BUCK2DVS7,
	274	MAX8997_REG_BUCK2DVS8,
	275	MAX8997_REG_BUCK3CTRL,
	276	MAX8997_REG_BUCK3DVS,
	277	MAX8997_REG_BUCK4CTRL,
	278	MAX8997_REG_BUCK4DVS,
	279	MAX8997_REG_BUCK5CTRL,
	280	MAX8997_REG_BUCK5DVS1,
	281	MAX8997_REG_BUCK5DVS2,
	282	MAX8997_REG_BUCK5DVS3,
	283	MAX8997_REG_BUCK5DVS4,
	284	MAX8997_REG_BUCK5DVS5,
	285	MAX8997_REG_BUCK5DVS6,
	286	MAX8997_REG_BUCK5DVS7,
	287	MAX8997_REG_BUCK5DVS8,
	288	MAX8997_REG_BUCK6CTRL,
	289	MAX8997_REG_BUCK6BPSKIPCTRL,
	290	MAX8997_REG_BUCK7CTRL,
	291	MAX8997_REG_BUCK7DVS,
	292	MAX8997_REG_LDO1CTRL,
	293	MAX8997_REG_LDO2CTRL,
	294	MAX8997_REG_LDO3CTRL,
	295	MAX8997_REG_LDO4CTRL,
	296	MAX8997_REG_LDO5CTRL,
	297	MAX8997_REG_LDO6CTRL,
	298	MAX8997_REG_LDO7CTRL,
	299	MAX8997_REG_LDO8CTRL,
	300	MAX8997_REG_LDO9CTRL,
	301	MAX8997_REG_LDO10CTRL,
	302	MAX8997_REG_LDO11CTRL,
	303	MAX8997_REG_LDO12CTRL,
	304	MAX8997_REG_LDO13CTRL,
	305	MAX8997_REG_LDO14CTRL,
	306	MAX8997_REG_LDO15CTRL,
	307	MAX8997_REG_LDO16CTRL,
	308	MAX8997_REG_LDO17CTRL,
	309	MAX8997_REG_LDO18CTRL,
	310	MAX8997_REG_LDO21CTRL,
	311	MAX8997_REG_MBCCTRL1,
	312	MAX8997_REG_MBCCTRL2,
	313	MAX8997_REG_MBCCTRL3,
314	MAX8997_REG_MBCCTRL4,
315	MAX8997_REG_MBCCTRL5,
316	MAX8997_REG_MBCCTRL6,
317	MAX8997_REG_OTPCGHCVS,
318	MAX8997_REG_SAFEOUTCTRL,
319	MAX8997_REG_LBCNFG1,
320	MAX8997_REG_LBCNFG2,
321	MAX8997_REG_BBCCTRL,
322
323	MAX8997_REG_FLASH1_CUR,
324	MAX8997_REG_FLASH2_CUR,
325	MAX8997_REG_MOVIE_CUR,
326	MAX8997_REG_GSMB_CUR,
327	MAX8997_REG_BOOST_CNTL,
328	MAX8997_REG_LEN_CNTL,
329	MAX8997_REG_FLASH_CNTL,
330	MAX8997_REG_WDT_CNTL,
331	MAX8997_REG_MAXFLASH1,
332	MAX8997_REG_MAXFLASH2,
333	MAX8997_REG_FLASHSTATUSMASK,
334
335	MAX8997_REG_GPIOCNTL1,
336	MAX8997_REG_GPIOCNTL2,
337	MAX8997_REG_GPIOCNTL3,
338	MAX8997_REG_GPIOCNTL4,
339	MAX8997_REG_GPIOCNTL5,
340	MAX8997_REG_GPIOCNTL6,
341	MAX8997_REG_GPIOCNTL7,
342	MAX8997_REG_GPIOCNTL8,
343	MAX8997_REG_GPIOCNTL9,
344	MAX8997_REG_GPIOCNTL10,
345	MAX8997_REG_GPIOCNTL11,
346	MAX8997_REG_GPIOCNTL12,
347
348	MAX8997_REG_LDO1CONFIG,
349	MAX8997_REG_LDO2CONFIG,
350	MAX8997_REG_LDO3CONFIG,
351	MAX8997_REG_LDO4CONFIG,
352	MAX8997_REG_LDO5CONFIG,
353	MAX8997_REG_LDO6CONFIG,
354	MAX8997_REG_LDO7CONFIG,
355	MAX8997_REG_LDO8CONFIG,
356	MAX8997_REG_LDO9CONFIG,
357	MAX8997_REG_LDO10CONFIG,
358	MAX8997_REG_LDO11CONFIG,
359	MAX8997_REG_LDO12CONFIG,
360	MAX8997_REG_LDO13CONFIG,
361	MAX8997_REG_LDO14CONFIG,
362	MAX8997_REG_LDO15CONFIG,
363	MAX8997_REG_LDO16CONFIG,
364	MAX8997_REG_LDO17CONFIG,
365	MAX8997_REG_LDO18CONFIG,
366	MAX8997_REG_LDO21CONFIG,
367
368	MAX8997_REG_DVSOKTIMER1,
369	MAX8997_REG_DVSOKTIMER2,
370	MAX8997_REG_DVSOKTIMER4,
371	MAX8997_REG_DVSOKTIMER5,
372	};
373
b673e24c	374	static u8 max8997_dumpaddr_muic[] = {
527e7e9a MH	375	MAX8997_MUIC_REG_INTMASK1,
	376	MAX8997_MUIC_REG_INTMASK2,
	377	MAX8997_MUIC_REG_INTMASK3,
	378	MAX8997_MUIC_REG_CDETCTRL,
	379	MAX8997_MUIC_REG_CONTROL1,
	380	MAX8997_MUIC_REG_CONTROL2,
	381	MAX8997_MUIC_REG_CONTROL3,
	382	};
	383
b673e24c	384	static u8 max8997_dumpaddr_haptic[] = {
527e7e9a MH	385	MAX8997_HAPTIC_REG_CONF1,
	386	MAX8997_HAPTIC_REG_CONF2,
	387	MAX8997_HAPTIC_REG_DRVCONF,
	388	MAX8997_HAPTIC_REG_CYCLECONF1,
	389	MAX8997_HAPTIC_REG_CYCLECONF2,
	390	MAX8997_HAPTIC_REG_SIGCONF1,
	391	MAX8997_HAPTIC_REG_SIGCONF2,
	392	MAX8997_HAPTIC_REG_SIGCONF3,
	393	MAX8997_HAPTIC_REG_SIGCONF4,
	394	MAX8997_HAPTIC_REG_SIGDC1,
	395	MAX8997_HAPTIC_REG_SIGDC2,
	396	MAX8997_HAPTIC_REG_SIGPWMDC1,
	397	MAX8997_HAPTIC_REG_SIGPWMDC2,
	398	MAX8997_HAPTIC_REG_SIGPWMDC3,
	399	MAX8997_HAPTIC_REG_SIGPWMDC4,
	400	};
	401
	402	static int max8997_freeze(struct device *dev)
	403	{
1b5420e1	404	struct i2c_client *i2c = to_i2c_client(dev);
527e7e9a MH	405	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	406	int i;
	407
	408	for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_pmic); i++)
	409	max8997_read_reg(i2c, max8997_dumpaddr_pmic[i],
	410	&max8997->reg_dump[i]);
	411
	412	for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++)
	413	max8997_read_reg(i2c, max8997_dumpaddr_muic[i],
	414	&max8997->reg_dump[i + MAX8997_REG_PMIC_END]);
	415
	416	for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++)
	417	max8997_read_reg(i2c, max8997_dumpaddr_haptic[i],
	418	&max8997->reg_dump[i + MAX8997_REG_PMIC_END +
	419	MAX8997_MUIC_REG_END]);
	420
	421	return 0;
	422	}
	423
	424	static int max8997_restore(struct device *dev)
	425	{
1b5420e1	426	struct i2c_client *i2c = to_i2c_client(dev);
527e7e9a MH	427	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	428	int i;
	429
	430	for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_pmic); i++)
	431	max8997_write_reg(i2c, max8997_dumpaddr_pmic[i],
	432	max8997->reg_dump[i]);
	433
	434	for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++)
	435	max8997_write_reg(i2c, max8997_dumpaddr_muic[i],
	436	max8997->reg_dump[i + MAX8997_REG_PMIC_END]);
	437
	438	for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++)
	439	max8997_write_reg(i2c, max8997_dumpaddr_haptic[i],
	440	max8997->reg_dump[i + MAX8997_REG_PMIC_END +
	441	MAX8997_MUIC_REG_END]);
	442
	443	return 0;
	444	}
	445
01fdaab8 MH	446	static int max8997_suspend(struct device *dev)
01fdaab8 MH	447	{
1b5420e1	448	struct i2c_client *i2c = to_i2c_client(dev);
01fdaab8 MH	449	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
01fdaab8 MH	450
c1aaaa1c	451	disable_irq(max8997->irq);
01fdaab8 MH	452	if (device_may_wakeup(dev))
	453	irq_set_irq_wake(max8997->irq, 1);
	454	return 0;
	455	}
	456
	457	static int max8997_resume(struct device *dev)
	458	{
1b5420e1	459	struct i2c_client *i2c = to_i2c_client(dev);
01fdaab8 MH	460	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	461
	462	if (device_may_wakeup(dev))
	463	irq_set_irq_wake(max8997->irq, 0);
c1aaaa1c	464	enable_irq(max8997->irq);
01fdaab8 MH	465	return max8997_irq_resume(max8997);
	466	}
	467
b673e24c	468	static const struct dev_pm_ops max8997_pm = {
01fdaab8 MH	469	.suspend = max8997_suspend,
01fdaab8 MH	470	.resume = max8997_resume,
527e7e9a MH	471	.freeze = max8997_freeze,
	472	.restore = max8997_restore,
	473	};
	474
	475	static struct i2c_driver max8997_i2c_driver = {
	476	.driver = {
	477	.name = "max8997",
527e7e9a	478	.pm = &max8997_pm,
9cf0c21f	479	.suppress_bind_attrs = true,
77b71b37	480	.of_match_table = of_match_ptr(max8997_pmic_dt_match),
527e7e9a MH	481	},
527e7e9a MH	482	.probe = max8997_i2c_probe,
527e7e9a MH	483	.id_table = max8997_i2c_id,
	484	};
	485
	486	static int __init max8997_i2c_init(void)
	487	{
	488	return i2c_add_driver(&max8997_i2c_driver);
	489	}
	490	/* init early so consumer devices can complete system boot */
	491	subsys_initcall(max8997_i2c_init);