// SPDX-License-Identifier: GPL-2.0+//// max77693.c - mfd core driver for the MAX 77693//// Copyright (C) 2012 Samsung Electronics// SangYoung Son <hello.son@samsung.com>//// This program is not provided / owned by Maxim Integrated Products.//// This driver is based on max8997.c #include <linux/module.h>#include <linux/slab.h>#include <linux/i2c.h>#include <linux/err.h>#include <linux/interrupt.h>#include <linux/of.h>#include <linux/pm_runtime.h>#include <linux/mutex.h>#include <linux/mfd/core.h>#include <linux/mfd/max77693.h>#include <linux/mfd/max77693-common.h>#include <linux/mfd/max77693-private.h>#include <linux/regulator/machine.h>#include <linux/regmap.h> #define I2C_ADDR_PMIC	(0xCC >> 1)	/* Charger, Flash LED */#define I2C_ADDR_MUIC	(0x4A >> 1)#define I2C_ADDR_HAPTIC	(0x90 >> 1) static const struct mfd_cell max77693_devs[] = {	{ .name = "max77693-pmic", },	{		.name = "max77693-charger",		.of_compatible = "maxim,max77693-charger",	},	{		.name = "max77693-muic",		.of_compatible = "maxim,max77693-muic",	},	{		.name = "max77693-haptic",		.of_compatible = "maxim,max77693-haptic",	},	{		.name = "max77693-led",		.of_compatible = "maxim,max77693-led",	},}; static const struct regmap_config max77693_regmap_config = {	.reg_bits = 8,	.val_bits = 8,	.max_register = MAX77693_PMIC_REG_END,}; static const struct regmap_irq max77693_led_irqs[] = {	{ .mask = LED_IRQ_FLED2_OPEN,  },	{ .mask = LED_IRQ_FLED2_SHORT, },	{ .mask = LED_IRQ_FLED1_OPEN,  },	{ .mask = LED_IRQ_FLED1_SHORT, },	{ .mask = LED_IRQ_MAX_FLASH,   },}; static const struct regmap_irq_chip max77693_led_irq_chip = {	.name			= "max77693-led",	.status_base		= MAX77693_LED_REG_FLASH_INT,	.mask_base		= MAX77693_LED_REG_FLASH_INT_MASK,	.num_regs		= 1,	.irqs			= max77693_led_irqs,	.num_irqs		= ARRAY_SIZE(max77693_led_irqs),}; static const struct regmap_irq max77693_topsys_irqs[] = {	{ .mask = TOPSYS_IRQ_T120C_INT,  },	{ .mask = TOPSYS_IRQ_T140C_INT,  },	{ .mask = TOPSYS_IRQ_LOWSYS_INT, },}; static const struct regmap_irq_chip max77693_topsys_irq_chip = {	.name			= "max77693-topsys",	.status_base		= MAX77693_PMIC_REG_TOPSYS_INT,	.mask_base		= MAX77693_PMIC_REG_TOPSYS_INT_MASK,	.num_regs		= 1,	.irqs			= max77693_topsys_irqs,	.num_irqs		= ARRAY_SIZE(max77693_topsys_irqs),}; static const struct regmap_irq max77693_charger_irqs[] = {	{ .mask = CHG_IRQ_BYP_I,   },	{ .mask = CHG_IRQ_THM_I,   },	{ .mask = CHG_IRQ_BAT_I,   },	{ .mask = CHG_IRQ_CHG_I,   },	{ .mask = CHG_IRQ_CHGIN_I, },}; static const struct regmap_irq_chip max77693_charger_irq_chip = {	.name			= "max77693-charger",	.status_base		= MAX77693_CHG_REG_CHG_INT,	.mask_base		= MAX77693_CHG_REG_CHG_INT_MASK,	.num_regs		= 1,	.irqs			= max77693_charger_irqs,	.num_irqs		= ARRAY_SIZE(max77693_charger_irqs),}; static const struct regmap_config max77693_regmap_muic_config = {	.reg_bits = 8,	.val_bits = 8,	.max_register = MAX77693_MUIC_REG_END,}; static const struct regmap_irq max77693_muic_irqs[] = {	{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC,		},	{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_LOW,	},	{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC_ERR,	},	{ .reg_offset = 0, .mask = MUIC_IRQ_INT1_ADC1K,		}, 	{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGTYP,	},	{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_CHGDETREUN,	},	{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_DCDTMR,	},	{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_DXOVP,		},	{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_VBVOLT,	},	{ .reg_offset = 1, .mask = MUIC_IRQ_INT2_VIDRM,		}, 	{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_EOC,		},	{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_CGMBC,		},	{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_OVP,		},	{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_MBCCHG_ERR,	},	{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_CHG_ENABLED,	},	{ .reg_offset = 2, .mask = MUIC_IRQ_INT3_BAT_DET,	},}; static const struct regmap_irq_chip max77693_muic_irq_chip = {	.name			= "max77693-muic",	.status_base		= MAX77693_MUIC_REG_INT1,	.unmask_base		= MAX77693_MUIC_REG_INTMASK1,	.num_regs		= 3,	.irqs			= max77693_muic_irqs,	.num_irqs		= ARRAY_SIZE(max77693_muic_irqs),}; static const struct regmap_config max77693_regmap_haptic_config = {	.reg_bits = 8,	.val_bits = 8,	.max_register = MAX77693_HAPTIC_REG_END,}; static int max77693_i2c_probe(struct i2c_client *i2c){	const struct i2c_device_id *id = i2c_client_get_device_id(i2c);	struct max77693_dev *max77693;	unsigned int reg_data;	int ret = 0; 	max77693 = devm_kzalloc(&i2c->dev,			sizeof(struct max77693_dev), GFP_KERNEL);	if (max77693 == NULL)		return -ENOMEM; 	i2c_set_clientdata(i2c, max77693);	max77693->dev = &i2c->dev;	max77693->i2c = i2c;	max77693->irq = i2c->irq;	max77693->type = id->driver_data; 	max77693->regmap = devm_regmap_init_i2c(i2c, &max77693_regmap_config);	if (IS_ERR(max77693->regmap)) {		ret = PTR_ERR(max77693->regmap);		dev_err(max77693->dev, "failed to allocate register map: %d\n",				ret);		return ret;	} 	ret = regmap_read(max77693->regmap, MAX77693_PMIC_REG_PMIC_ID2,				&reg_data);	if (ret < 0) {		dev_err(max77693->dev, "device not found on this channel\n");		return ret;	} else		dev_info(max77693->dev, "device ID: 0x%x\n", reg_data); 	max77693->i2c_muic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_MUIC);	if (IS_ERR(max77693->i2c_muic)) {		dev_err(max77693->dev, "Failed to allocate I2C device for MUIC\n");		return PTR_ERR(max77693->i2c_muic);	}	i2c_set_clientdata(max77693->i2c_muic, max77693); 	max77693->i2c_haptic = i2c_new_dummy_device(i2c->adapter, I2C_ADDR_HAPTIC);	if (IS_ERR(max77693->i2c_haptic)) {		dev_err(max77693->dev, "Failed to allocate I2C device for Haptic\n");		ret = PTR_ERR(max77693->i2c_haptic);		goto err_i2c_haptic;	}	i2c_set_clientdata(max77693->i2c_haptic, max77693); 	max77693->regmap_haptic = devm_regmap_init_i2c(max77693->i2c_haptic,					&max77693_regmap_haptic_config);	if (IS_ERR(max77693->regmap_haptic)) {		ret = PTR_ERR(max77693->regmap_haptic);		dev_err(max77693->dev,			"failed to initialize haptic register map: %d\n", ret);		goto err_regmap;	} 	/*	 * Initialize register map for MUIC device because use regmap-muic	 * instance of MUIC device when irq of max77693 is initialized	 * before call max77693-muic probe() function.	 */	max77693->regmap_muic = devm_regmap_init_i2c(max77693->i2c_muic,					 &max77693_regmap_muic_config);	if (IS_ERR(max77693->regmap_muic)) {		ret = PTR_ERR(max77693->regmap_muic);		dev_err(max77693->dev,			"failed to allocate register map: %d\n", ret);		goto err_regmap;	} 	ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,				IRQF_ONESHOT | IRQF_SHARED, 0,				&max77693_led_irq_chip,				&max77693->irq_data_led);	if (ret) {		dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);		goto err_regmap;	} 	ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,				IRQF_ONESHOT | IRQF_SHARED, 0,				&max77693_topsys_irq_chip,				&max77693->irq_data_topsys);	if (ret) {		dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);		goto err_irq_topsys;	} 	ret = regmap_add_irq_chip(max77693->regmap, max77693->irq,				IRQF_ONESHOT | IRQF_SHARED, 0,				&max77693_charger_irq_chip,				&max77693->irq_data_chg);	if (ret) {		dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);		goto err_irq_charger;	} 	ret = regmap_add_irq_chip(max77693->regmap_muic, max77693->irq,				IRQF_ONESHOT | IRQF_SHARED, 0,				&max77693_muic_irq_chip,				&max77693->irq_data_muic);	if (ret) {		dev_err(max77693->dev, "failed to add irq chip: %d\n", ret);		goto err_irq_muic;	} 	/* Unmask interrupts from all blocks in interrupt source register */	ret = regmap_update_bits(max77693->regmap,				MAX77693_PMIC_REG_INTSRC_MASK,				SRC_IRQ_ALL, (unsigned int)~SRC_IRQ_ALL);	if (ret < 0) {		dev_err(max77693->dev,			"Could not unmask interrupts in INTSRC: %d\n",			ret);		goto err_intsrc;	} 	pm_runtime_set_active(max77693->dev); 	ret = mfd_add_devices(max77693->dev, -1, max77693_devs,			      ARRAY_SIZE(max77693_devs), NULL, 0, NULL);	if (ret < 0)		goto err_mfd; 	return ret; err_mfd:	mfd_remove_devices(max77693->dev);err_intsrc:	regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic);err_irq_muic:	regmap_del_irq_chip(max77693->irq, max77693->irq_data_chg);err_irq_charger:	regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys);err_irq_topsys:	regmap_del_irq_chip(max77693->irq, max77693->irq_data_led);err_regmap:	i2c_unregister_device(max77693->i2c_haptic);err_i2c_haptic:	i2c_unregister_device(max77693->i2c_muic);	return ret;} static void max77693_i2c_remove(struct i2c_client *i2c){	struct max77693_dev *max77693 = i2c_get_clientdata(i2c); 	mfd_remove_devices(max77693->dev); 	regmap_del_irq_chip(max77693->irq, max77693->irq_data_muic);	regmap_del_irq_chip(max77693->irq, max77693->irq_data_chg);	regmap_del_irq_chip(max77693->irq, max77693->irq_data_topsys);	regmap_del_irq_chip(max77693->irq, max77693->irq_data_led); 	i2c_unregister_device(max77693->i2c_muic);	i2c_unregister_device(max77693->i2c_haptic);} static const struct i2c_device_id max77693_i2c_id[] = {	{ "max77693", TYPE_MAX77693 },	{ }};MODULE_DEVICE_TABLE(i2c, max77693_i2c_id); static int max77693_suspend(struct device *dev){	struct i2c_client *i2c = to_i2c_client(dev);	struct max77693_dev *max77693 = i2c_get_clientdata(i2c); 	if (device_may_wakeup(dev)) {		enable_irq_wake(max77693->irq);		disable_irq(max77693->irq);	} 	return 0;} static int max77693_resume(struct device *dev){	struct i2c_client *i2c = to_i2c_client(dev);	struct max77693_dev *max77693 = i2c_get_clientdata(i2c); 	if (device_may_wakeup(dev)) {		disable_irq_wake(max77693->irq);		enable_irq(max77693->irq);	} 	return 0;} static const struct dev_pm_ops max77693_pm = {	.suspend = max77693_suspend,	.resume = max77693_resume,}; #ifdef CONFIG_OFstatic const struct of_device_id max77693_dt_match[] = {	{ .compatible = "maxim,max77693" },	{},};MODULE_DEVICE_TABLE(of, max77693_dt_match);#endif static struct i2c_driver max77693_i2c_driver = {	.driver = {		   .name = "max77693",		   .pm = &max77693_pm,		   .of_match_table = of_match_ptr(max77693_dt_match),	},	.probe = max77693_i2c_probe,	.remove = max77693_i2c_remove,	.id_table = max77693_i2c_id,}; module_i2c_driver(max77693_i2c_driver); MODULE_DESCRIPTION("MAXIM 77693 multi-function core driver");MODULE_AUTHOR("SangYoung, Son <hello.son@samsung.com>");MODULE_LICENSE("GPL");