[linux.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 <[email protected]>
//
// 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_device.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 (i2c->dev.of_node)
		return (unsigned long)of_device_get_match_data(&i2c->dev);

	return id->driver_data;
}

static int max8997_i2c_probe(struct i2c_client *i2c)
{
	const struct i2c_device_id *id = i2c_client_get_device_id(i2c);
	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_device(i2c->adapter, I2C_ADDR_RTC);
	if (IS_ERR(max8997->rtc)) {
		dev_err(max8997->dev, "Failed to allocate I2C device for RTC\n");
		return PTR_ERR(max8997->rtc);
	}
	i2c_set_clientdata(max8997->rtc, max8997);

	max8997->haptic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_HAPTIC);
	if (IS_ERR(max8997->haptic)) {
		dev_err(max8997->dev, "Failed to allocate I2C device for Haptic\n");
		ret = PTR_ERR(max8997->haptic);
		goto err_i2c_haptic;
	}
	i2c_set_clientdata(max8997->haptic, max8997);

	max8997->muic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_MUIC);
	if (IS_ERR(max8997->muic)) {
		dev_err(max8997->dev, "Failed to allocate I2C device for MUIC\n");
		ret = PTR_ERR(max8997->muic);
		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 <[email protected]>
	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>
b486413d	14	#include <linux/of_device.h>
77b71b37	15	#include <linux/of_irq.h>
01fdaab8	16	#include <linux/interrupt.h>
527e7e9a	17	#include <linux/pm_runtime.h>
9cf0c21f	18	#include <linux/init.h>
527e7e9a MH	19	#include <linux/mutex.h>
	20	#include <linux/mfd/core.h>
	21	#include <linux/mfd/max8997.h>
	22	#include <linux/mfd/max8997-private.h>
	23
	24	#define I2C_ADDR_PMIC (0xCC >> 1)
	25	#define I2C_ADDR_MUIC (0x4A >> 1)
	26	#define I2C_ADDR_BATTERY (0x6C >> 1)
	27	#define I2C_ADDR_RTC (0x0C >> 1)
	28	#define I2C_ADDR_HAPTIC (0x90 >> 1)
	29
7c0517b1	30	static const struct mfd_cell max8997_devs[] = {
527e7e9a MH	31	{ .name = "max8997-pmic", },
527e7e9a MH	32	{ .name = "max8997-rtc", },
2397c3ee	33	{ .name = "max8997-battery", },
527e7e9a	34	{ .name = "max8997-haptic", },
2397c3ee	35	{ .name = "max8997-muic", },
f6dd2db9 DK	36	{ .name = "max8997-led", .id = 1 },
f6dd2db9 DK	37	{ .name = "max8997-led", .id = 2 },
527e7e9a MH	38	};
527e7e9a MH	39
77b71b37	40	#ifdef CONFIG_OF
f1eb2cb8	41	static const struct of_device_id max8997_pmic_dt_match[] = {
ed6ccdc6	42	{ .compatible = "maxim,max8997-pmic", .data = (void *)TYPE_MAX8997 },
77b71b37 TA	43	{},
	44	};
	45	#endif
	46
527e7e9a MH	47	int max8997_read_reg(struct i2c_client i2c, u8 reg, u8 dest)
	48	{
	49	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	50	int ret;
	51
	52	mutex_lock(&max8997->iolock);
	53	ret = i2c_smbus_read_byte_data(i2c, reg);
	54	mutex_unlock(&max8997->iolock);
	55	if (ret < 0)
	56	return ret;
	57
	58	ret &= 0xff;
	59	*dest = ret;
	60	return 0;
	61	}
	62	EXPORT_SYMBOL_GPL(max8997_read_reg);
	63
	64	int max8997_bulk_read(struct i2c_client i2c, u8 reg, int count, u8 buf)
	65	{
	66	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	67	int ret;
	68
	69	mutex_lock(&max8997->iolock);
	70	ret = i2c_smbus_read_i2c_block_data(i2c, reg, count, buf);
	71	mutex_unlock(&max8997->iolock);
	72	if (ret < 0)
	73	return ret;
	74
	75	return 0;
	76	}
	77	EXPORT_SYMBOL_GPL(max8997_bulk_read);
	78
	79	int max8997_write_reg(struct i2c_client *i2c, u8 reg, u8 value)
	80	{
	81	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	82	int ret;
	83
	84	mutex_lock(&max8997->iolock);
	85	ret = i2c_smbus_write_byte_data(i2c, reg, value);
	86	mutex_unlock(&max8997->iolock);
	87	return ret;
	88	}
	89	EXPORT_SYMBOL_GPL(max8997_write_reg);
	90
	91	int max8997_bulk_write(struct i2c_client i2c, u8 reg, int count, u8 buf)
	92	{
	93	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	94	int ret;
	95
	96	mutex_lock(&max8997->iolock);
	97	ret = i2c_smbus_write_i2c_block_data(i2c, reg, count, buf);
	98	mutex_unlock(&max8997->iolock);
	99	if (ret < 0)
	100	return ret;
	101
	102	return 0;
	103	}
	104	EXPORT_SYMBOL_GPL(max8997_bulk_write);
	105
	106	int max8997_update_reg(struct i2c_client *i2c, u8 reg, u8 val, u8 mask)
	107	{
	108	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	109	int ret;
	110
111	mutex_lock(&max8997->iolock);
112	ret = i2c_smbus_read_byte_data(i2c, reg);
113	if (ret >= 0) {
114	u8 old_val = ret & 0xff;
115	u8 new_val = (val & mask) \| (old_val & (~mask));
116	ret = i2c_smbus_write_byte_data(i2c, reg, new_val);
117	}
118	mutex_unlock(&max8997->iolock);
119	return ret;
120	}
121	EXPORT_SYMBOL_GPL(max8997_update_reg);
122
77b71b37 TA	123	/*
	124	* Only the common platform data elements for max8997 are parsed here from the
	125	* device tree. Other sub-modules of max8997 such as pmic, rtc and others have
	126	* to parse their own platform data elements from device tree.
	127	*
	128	* The max8997 platform data structure is instantiated here and the drivers for
	129	* the sub-modules need not instantiate another instance while parsing their
	130	* platform data.
	131	*/
	132	static struct max8997_platform_data *max8997_i2c_parse_dt_pdata(
	133	struct device *dev)
	134	{
	135	struct max8997_platform_data *pd;
	136
	137	pd = devm_kzalloc(dev, sizeof(*pd), GFP_KERNEL);
f01b90b2	138	if (!pd)
77b71b37	139	return ERR_PTR(-ENOMEM);
77b71b37 TA	140
	141	pd->ono = irq_of_parse_and_map(dev->of_node, 1);
	142
77b71b37 TA	143	return pd;
77b71b37 TA	144	}
77b71b37	145
05fb7a56	146	static inline unsigned long max8997_i2c_get_driver_data(struct i2c_client *i2c,
77b71b37 TA	147	const struct i2c_device_id *id)
77b71b37 TA	148	{
b486413d KK	149	if (i2c->dev.of_node)
	150	return (unsigned long)of_device_get_match_data(&i2c->dev);
	151
05fb7a56	152	return id->driver_data;
77b71b37 TA	153	}
77b71b37 TA	154
c9f105ec	155	static int max8997_i2c_probe(struct i2c_client *i2c)
527e7e9a	156	{
c9f105ec	157	const struct i2c_device_id *id = i2c_client_get_device_id(i2c);
527e7e9a	158	struct max8997_dev *max8997;
334a41ce	159	struct max8997_platform_data *pdata = dev_get_platdata(&i2c->dev);
527e7e9a MH	160	int ret = 0;
527e7e9a MH	161
6922ffcf JH	162	max8997 = devm_kzalloc(&i2c->dev, sizeof(struct max8997_dev),
6922ffcf JH	163	GFP_KERNEL);
527e7e9a MH	164	if (max8997 == NULL)
	165	return -ENOMEM;
	166
	167	i2c_set_clientdata(i2c, max8997);
	168	max8997->dev = &i2c->dev;
	169	max8997->i2c = i2c;
77b71b37	170	max8997->type = max8997_i2c_get_driver_data(i2c, id);
7eb3154e	171	max8997->irq = i2c->irq;
527e7e9a	172
01c3f110	173	if (IS_ENABLED(CONFIG_OF) && max8997->dev->of_node) {
77b71b37	174	pdata = max8997_i2c_parse_dt_pdata(max8997->dev);
6922ffcf JH	175	if (IS_ERR(pdata))
6922ffcf JH	176	return PTR_ERR(pdata);
77b71b37 TA	177	}
77b71b37 TA	178
527e7e9a	179	if (!pdata)
6922ffcf	180	return ret;
527e7e9a	181
77b71b37	182	max8997->pdata = pdata;
7eb3154e	183	max8997->ono = pdata->ono;
527e7e9a MH	184
	185	mutex_init(&max8997->iolock);
	186
4e32bff6 WS	187	max8997->rtc = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_RTC);
4e32bff6 WS	188	if (IS_ERR(max8997->rtc)) {
97dc4ed3	189	dev_err(max8997->dev, "Failed to allocate I2C device for RTC\n");
4e32bff6	190	return PTR_ERR(max8997->rtc);
97dc4ed3	191	}
527e7e9a	192	i2c_set_clientdata(max8997->rtc, max8997);
97dc4ed3	193
4e32bff6 WS	194	max8997->haptic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_HAPTIC);
4e32bff6 WS	195	if (IS_ERR(max8997->haptic)) {
97dc4ed3	196	dev_err(max8997->dev, "Failed to allocate I2C device for Haptic\n");
4e32bff6	197	ret = PTR_ERR(max8997->haptic);
97dc4ed3 KK	198	goto err_i2c_haptic;
97dc4ed3 KK	199	}
527e7e9a	200	i2c_set_clientdata(max8997->haptic, max8997);
97dc4ed3	201
4e32bff6 WS	202	max8997->muic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_MUIC);
4e32bff6 WS	203	if (IS_ERR(max8997->muic)) {
97dc4ed3	204	dev_err(max8997->dev, "Failed to allocate I2C device for MUIC\n");
4e32bff6	205	ret = PTR_ERR(max8997->muic);
97dc4ed3 KK	206	goto err_i2c_muic;
97dc4ed3 KK	207	}
527e7e9a MH	208	i2c_set_clientdata(max8997->muic, max8997);
	209
	210	pm_runtime_set_active(max8997->dev);
	211
7eb3154e MH	212	max8997_irq_init(max8997);
7eb3154e MH	213
c1ec8fc3	214	ret = mfd_add_devices(max8997->dev, -1, max8997_devs,
527e7e9a	215	ARRAY_SIZE(max8997_devs),
0848c94f	216	NULL, 0, NULL);
c1ec8fc3 LP	217	if (ret < 0) {
	218	dev_err(max8997->dev, "failed to add MFD devices %d\n", ret);
	219	goto err_mfd;
	220	}
527e7e9a MH	221
	222	/*
	223	* TODO: enable others (flash, muic, rtc, battery, ...) and
	224	* check the return value
	225	*/
	226
01fdaab8	227	/* MAX8997 has a power button input. */
efddff27	228	device_init_wakeup(max8997->dev, true);
01fdaab8	229
527e7e9a MH	230	return ret;
	231
	232	err_mfd:
	233	mfd_remove_devices(max8997->dev);
	234	i2c_unregister_device(max8997->muic);
97dc4ed3	235	err_i2c_muic:
527e7e9a	236	i2c_unregister_device(max8997->haptic);
97dc4ed3	237	err_i2c_haptic:
527e7e9a	238	i2c_unregister_device(max8997->rtc);
527e7e9a MH	239	return ret;
	240	}
	241
527e7e9a MH	242	static const struct i2c_device_id max8997_i2c_id[] = {
	243	{ "max8997", TYPE_MAX8997 },
	244	{ "max8966", TYPE_MAX8966 },
	245	{ }
	246	};
527e7e9a	247
b673e24c	248	static u8 max8997_dumpaddr_pmic[] = {
527e7e9a MH	249	MAX8997_REG_INT1MSK,
	250	MAX8997_REG_INT2MSK,
	251	MAX8997_REG_INT3MSK,
	252	MAX8997_REG_INT4MSK,
	253	MAX8997_REG_MAINCON1,
	254	MAX8997_REG_MAINCON2,
	255	MAX8997_REG_BUCKRAMP,
	256	MAX8997_REG_BUCK1CTRL,
	257	MAX8997_REG_BUCK1DVS1,
	258	MAX8997_REG_BUCK1DVS2,
	259	MAX8997_REG_BUCK1DVS3,
	260	MAX8997_REG_BUCK1DVS4,
	261	MAX8997_REG_BUCK1DVS5,
	262	MAX8997_REG_BUCK1DVS6,
	263	MAX8997_REG_BUCK1DVS7,
	264	MAX8997_REG_BUCK1DVS8,
	265	MAX8997_REG_BUCK2CTRL,
	266	MAX8997_REG_BUCK2DVS1,
	267	MAX8997_REG_BUCK2DVS2,
	268	MAX8997_REG_BUCK2DVS3,
	269	MAX8997_REG_BUCK2DVS4,
	270	MAX8997_REG_BUCK2DVS5,
	271	MAX8997_REG_BUCK2DVS6,
	272	MAX8997_REG_BUCK2DVS7,
	273	MAX8997_REG_BUCK2DVS8,
	274	MAX8997_REG_BUCK3CTRL,
	275	MAX8997_REG_BUCK3DVS,
	276	MAX8997_REG_BUCK4CTRL,
	277	MAX8997_REG_BUCK4DVS,
	278	MAX8997_REG_BUCK5CTRL,
	279	MAX8997_REG_BUCK5DVS1,
	280	MAX8997_REG_BUCK5DVS2,
	281	MAX8997_REG_BUCK5DVS3,
	282	MAX8997_REG_BUCK5DVS4,
	283	MAX8997_REG_BUCK5DVS5,
	284	MAX8997_REG_BUCK5DVS6,
	285	MAX8997_REG_BUCK5DVS7,
	286	MAX8997_REG_BUCK5DVS8,
	287	MAX8997_REG_BUCK6CTRL,
	288	MAX8997_REG_BUCK6BPSKIPCTRL,
	289	MAX8997_REG_BUCK7CTRL,
	290	MAX8997_REG_BUCK7DVS,
	291	MAX8997_REG_LDO1CTRL,
	292	MAX8997_REG_LDO2CTRL,
	293	MAX8997_REG_LDO3CTRL,
	294	MAX8997_REG_LDO4CTRL,
	295	MAX8997_REG_LDO5CTRL,
	296	MAX8997_REG_LDO6CTRL,
	297	MAX8997_REG_LDO7CTRL,
	298	MAX8997_REG_LDO8CTRL,
	299	MAX8997_REG_LDO9CTRL,
	300	MAX8997_REG_LDO10CTRL,
	301	MAX8997_REG_LDO11CTRL,
	302	MAX8997_REG_LDO12CTRL,
	303	MAX8997_REG_LDO13CTRL,
	304	MAX8997_REG_LDO14CTRL,
	305	MAX8997_REG_LDO15CTRL,
	306	MAX8997_REG_LDO16CTRL,
	307	MAX8997_REG_LDO17CTRL,
	308	MAX8997_REG_LDO18CTRL,
	309	MAX8997_REG_LDO21CTRL,
	310	MAX8997_REG_MBCCTRL1,
	311	MAX8997_REG_MBCCTRL2,
	312	MAX8997_REG_MBCCTRL3,
313	MAX8997_REG_MBCCTRL4,
314	MAX8997_REG_MBCCTRL5,
315	MAX8997_REG_MBCCTRL6,
316	MAX8997_REG_OTPCGHCVS,
317	MAX8997_REG_SAFEOUTCTRL,
318	MAX8997_REG_LBCNFG1,
319	MAX8997_REG_LBCNFG2,
320	MAX8997_REG_BBCCTRL,
321
322	MAX8997_REG_FLASH1_CUR,
323	MAX8997_REG_FLASH2_CUR,
324	MAX8997_REG_MOVIE_CUR,
325	MAX8997_REG_GSMB_CUR,
326	MAX8997_REG_BOOST_CNTL,
327	MAX8997_REG_LEN_CNTL,
328	MAX8997_REG_FLASH_CNTL,
329	MAX8997_REG_WDT_CNTL,
330	MAX8997_REG_MAXFLASH1,
331	MAX8997_REG_MAXFLASH2,
332	MAX8997_REG_FLASHSTATUSMASK,
333
334	MAX8997_REG_GPIOCNTL1,
335	MAX8997_REG_GPIOCNTL2,
336	MAX8997_REG_GPIOCNTL3,
337	MAX8997_REG_GPIOCNTL4,
338	MAX8997_REG_GPIOCNTL5,
339	MAX8997_REG_GPIOCNTL6,
340	MAX8997_REG_GPIOCNTL7,
341	MAX8997_REG_GPIOCNTL8,
342	MAX8997_REG_GPIOCNTL9,
343	MAX8997_REG_GPIOCNTL10,
344	MAX8997_REG_GPIOCNTL11,
345	MAX8997_REG_GPIOCNTL12,
346
347	MAX8997_REG_LDO1CONFIG,
348	MAX8997_REG_LDO2CONFIG,
349	MAX8997_REG_LDO3CONFIG,
350	MAX8997_REG_LDO4CONFIG,
351	MAX8997_REG_LDO5CONFIG,
352	MAX8997_REG_LDO6CONFIG,
353	MAX8997_REG_LDO7CONFIG,
354	MAX8997_REG_LDO8CONFIG,
355	MAX8997_REG_LDO9CONFIG,
356	MAX8997_REG_LDO10CONFIG,
357	MAX8997_REG_LDO11CONFIG,
358	MAX8997_REG_LDO12CONFIG,
359	MAX8997_REG_LDO13CONFIG,
360	MAX8997_REG_LDO14CONFIG,
361	MAX8997_REG_LDO15CONFIG,
362	MAX8997_REG_LDO16CONFIG,
363	MAX8997_REG_LDO17CONFIG,
364	MAX8997_REG_LDO18CONFIG,
365	MAX8997_REG_LDO21CONFIG,
366
367	MAX8997_REG_DVSOKTIMER1,
368	MAX8997_REG_DVSOKTIMER2,
369	MAX8997_REG_DVSOKTIMER4,
370	MAX8997_REG_DVSOKTIMER5,
371	};
372
b673e24c	373	static u8 max8997_dumpaddr_muic[] = {
527e7e9a MH	374	MAX8997_MUIC_REG_INTMASK1,
	375	MAX8997_MUIC_REG_INTMASK2,
	376	MAX8997_MUIC_REG_INTMASK3,
	377	MAX8997_MUIC_REG_CDETCTRL,
	378	MAX8997_MUIC_REG_CONTROL1,
	379	MAX8997_MUIC_REG_CONTROL2,
	380	MAX8997_MUIC_REG_CONTROL3,
	381	};
	382
b673e24c	383	static u8 max8997_dumpaddr_haptic[] = {
527e7e9a MH	384	MAX8997_HAPTIC_REG_CONF1,
	385	MAX8997_HAPTIC_REG_CONF2,
	386	MAX8997_HAPTIC_REG_DRVCONF,
	387	MAX8997_HAPTIC_REG_CYCLECONF1,
	388	MAX8997_HAPTIC_REG_CYCLECONF2,
	389	MAX8997_HAPTIC_REG_SIGCONF1,
	390	MAX8997_HAPTIC_REG_SIGCONF2,
	391	MAX8997_HAPTIC_REG_SIGCONF3,
	392	MAX8997_HAPTIC_REG_SIGCONF4,
	393	MAX8997_HAPTIC_REG_SIGDC1,
	394	MAX8997_HAPTIC_REG_SIGDC2,
	395	MAX8997_HAPTIC_REG_SIGPWMDC1,
	396	MAX8997_HAPTIC_REG_SIGPWMDC2,
	397	MAX8997_HAPTIC_REG_SIGPWMDC3,
	398	MAX8997_HAPTIC_REG_SIGPWMDC4,
	399	};
	400
	401	static int max8997_freeze(struct device *dev)
	402	{
1b5420e1	403	struct i2c_client *i2c = to_i2c_client(dev);
527e7e9a MH	404	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	405	int i;
	406
	407	for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_pmic); i++)
	408	max8997_read_reg(i2c, max8997_dumpaddr_pmic[i],
	409	&max8997->reg_dump[i]);
	410
	411	for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++)
	412	max8997_read_reg(i2c, max8997_dumpaddr_muic[i],
	413	&max8997->reg_dump[i + MAX8997_REG_PMIC_END]);
	414
	415	for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++)
	416	max8997_read_reg(i2c, max8997_dumpaddr_haptic[i],
	417	&max8997->reg_dump[i + MAX8997_REG_PMIC_END +
	418	MAX8997_MUIC_REG_END]);
	419
	420	return 0;
	421	}
	422
	423	static int max8997_restore(struct device *dev)
	424	{
1b5420e1	425	struct i2c_client *i2c = to_i2c_client(dev);
527e7e9a MH	426	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	427	int i;
	428
	429	for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_pmic); i++)
	430	max8997_write_reg(i2c, max8997_dumpaddr_pmic[i],
	431	max8997->reg_dump[i]);
	432
	433	for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_muic); i++)
	434	max8997_write_reg(i2c, max8997_dumpaddr_muic[i],
	435	max8997->reg_dump[i + MAX8997_REG_PMIC_END]);
	436
	437	for (i = 0; i < ARRAY_SIZE(max8997_dumpaddr_haptic); i++)
	438	max8997_write_reg(i2c, max8997_dumpaddr_haptic[i],
	439	max8997->reg_dump[i + MAX8997_REG_PMIC_END +
	440	MAX8997_MUIC_REG_END]);
	441
	442	return 0;
	443	}
	444
01fdaab8 MH	445	static int max8997_suspend(struct device *dev)
01fdaab8 MH	446	{
1b5420e1	447	struct i2c_client *i2c = to_i2c_client(dev);
01fdaab8 MH	448	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
01fdaab8 MH	449
c1aaaa1c	450	disable_irq(max8997->irq);
01fdaab8 MH	451	if (device_may_wakeup(dev))
	452	irq_set_irq_wake(max8997->irq, 1);
	453	return 0;
	454	}
	455
	456	static int max8997_resume(struct device *dev)
	457	{
1b5420e1	458	struct i2c_client *i2c = to_i2c_client(dev);
01fdaab8 MH	459	struct max8997_dev *max8997 = i2c_get_clientdata(i2c);
	460
	461	if (device_may_wakeup(dev))
	462	irq_set_irq_wake(max8997->irq, 0);
c1aaaa1c	463	enable_irq(max8997->irq);
01fdaab8 MH	464	return max8997_irq_resume(max8997);
	465	}
	466
b673e24c	467	static const struct dev_pm_ops max8997_pm = {
01fdaab8 MH	468	.suspend = max8997_suspend,
01fdaab8 MH	469	.resume = max8997_resume,
527e7e9a MH	470	.freeze = max8997_freeze,
	471	.restore = max8997_restore,
	472	};
	473
	474	static struct i2c_driver max8997_i2c_driver = {
	475	.driver = {
	476	.name = "max8997",
527e7e9a	477	.pm = &max8997_pm,
9cf0c21f	478	.suppress_bind_attrs = true,
77b71b37	479	.of_match_table = of_match_ptr(max8997_pmic_dt_match),
527e7e9a	480	},
9816d859	481	.probe = max8997_i2c_probe,
527e7e9a MH	482	.id_table = max8997_i2c_id,
	483	};
	484
	485	static int __init max8997_i2c_init(void)
	486	{
	487	return i2c_add_driver(&max8997_i2c_driver);
	488	}
	489	/* init early so consumer devices can complete system boot */
	490	subsys_initcall(max8997_i2c_init);