// 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_OFstatic 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 int max8997_i2c_probe(struct i2c_client *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 = (uintptr_t)i2c_get_match_data(i2c);	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))		enable_irq_wake(max8997->irq);	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))		disable_irq_wake(max8997->irq);	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);