// SPDX-License-Identifier: GPL-2.0+/* * Maxim MAX77705 PMIC core driver * * Copyright (C) 2025 Dzmitry Sankouski <dsankouski@gmail.com> **/#include <linux/i2c.h>#include <linux/interrupt.h>#include <linux/mfd/core.h>#include <linux/mfd/max77705-private.h>#include <linux/mfd/max77693-common.h>#include <linux/pm.h>#include <linux/power/max17042_battery.h>#include <linux/module.h>#include <linux/regmap.h>#include <linux/of.h> static struct mfd_cell max77705_devs[] = {	MFD_CELL_OF("max77705-rgb", NULL, NULL, 0, 0, "maxim,max77705-rgb"),	MFD_CELL_OF("max77705-charger", NULL, NULL, 0, 0, "maxim,max77705-charger"),	MFD_CELL_OF("max77705-haptic", NULL, NULL, 0, 0, "maxim,max77705-haptic"),}; static const struct regmap_range max77705_readable_ranges[] = {	regmap_reg_range(MAX77705_PMIC_REG_PMICID1,		MAX77705_PMIC_REG_BSTOUT_MASK),	regmap_reg_range(MAX77705_PMIC_REG_INTSRC,		MAX77705_PMIC_REG_RESERVED_29),	regmap_reg_range(MAX77705_PMIC_REG_BOOSTCONTROL1,	MAX77705_PMIC_REG_BOOSTCONTROL1),	regmap_reg_range(MAX77705_PMIC_REG_MCONFIG,		MAX77705_PMIC_REG_MCONFIG2),	regmap_reg_range(MAX77705_PMIC_REG_FORCE_EN_MASK,	MAX77705_PMIC_REG_FORCE_EN_MASK),	regmap_reg_range(MAX77705_PMIC_REG_BOOSTCONTROL1,	MAX77705_PMIC_REG_BOOSTCONTROL1),	regmap_reg_range(MAX77705_PMIC_REG_BOOSTCONTROL2,	MAX77705_PMIC_REG_BOOSTCONTROL2),	regmap_reg_range(MAX77705_PMIC_REG_SW_RESET,		MAX77705_PMIC_REG_USBC_RESET),}; static const struct regmap_range max77705_writable_ranges[] = {	regmap_reg_range(MAX77705_PMIC_REG_MAINCTRL1,		MAX77705_PMIC_REG_BSTOUT_MASK),	regmap_reg_range(MAX77705_PMIC_REG_INTSRC,		MAX77705_PMIC_REG_RESERVED_29),	regmap_reg_range(MAX77705_PMIC_REG_BOOSTCONTROL1,	MAX77705_PMIC_REG_BOOSTCONTROL1),	regmap_reg_range(MAX77705_PMIC_REG_MCONFIG,		MAX77705_PMIC_REG_MCONFIG2),	regmap_reg_range(MAX77705_PMIC_REG_FORCE_EN_MASK,	MAX77705_PMIC_REG_FORCE_EN_MASK),	regmap_reg_range(MAX77705_PMIC_REG_BOOSTCONTROL1,	MAX77705_PMIC_REG_BOOSTCONTROL1),	regmap_reg_range(MAX77705_PMIC_REG_BOOSTCONTROL2,	MAX77705_PMIC_REG_BOOSTCONTROL2),	regmap_reg_range(MAX77705_PMIC_REG_SW_RESET,		MAX77705_PMIC_REG_USBC_RESET),}; static const struct regmap_access_table max77705_readable_table = {	.yes_ranges = max77705_readable_ranges,	.n_yes_ranges = ARRAY_SIZE(max77705_readable_ranges),}; static const struct regmap_access_table max77705_writable_table = {	.yes_ranges = max77705_writable_ranges,	.n_yes_ranges = ARRAY_SIZE(max77705_writable_ranges),}; static const struct regmap_config max77705_regmap_config = {	.reg_bits = 8,	.val_bits = 8,	.rd_table = &max77705_readable_table,	.wr_table = &max77705_writable_table,	.max_register = MAX77705_PMIC_REG_USBC_RESET,}; static const struct regmap_irq max77705_irqs[] = {	{ .mask = MAX77705_SRC_IRQ_CHG, },	{ .mask = MAX77705_SRC_IRQ_TOP, },	{ .mask = MAX77705_SRC_IRQ_FG, },	{ .mask = MAX77705_SRC_IRQ_USBC, },}; static const struct regmap_irq_chip max77705_irq_chip = {	.name		= "max77705",	.status_base	= MAX77705_PMIC_REG_INTSRC,	.ack_base	= MAX77705_PMIC_REG_INTSRC,	.mask_base	= MAX77705_PMIC_REG_INTSRC_MASK,	.num_regs	= 1,	.irqs		= max77705_irqs,	.num_irqs	= ARRAY_SIZE(max77705_irqs),}; static int max77705_i2c_probe(struct i2c_client *i2c){	struct device *dev = &i2c->dev;	struct max77693_dev *max77705;	struct regmap_irq_chip_data *irq_data;	struct irq_domain *domain;	enum max77705_hw_rev pmic_rev;	unsigned int pmic_rev_value;	int ret; 	max77705 = devm_kzalloc(dev, sizeof(*max77705), GFP_KERNEL);	if (!max77705)		return -ENOMEM; 	max77705->i2c = i2c;	max77705->type = TYPE_MAX77705;	i2c_set_clientdata(i2c, max77705); 	max77705->regmap = devm_regmap_init_i2c(i2c, &max77705_regmap_config);	if (IS_ERR(max77705->regmap))		return PTR_ERR(max77705->regmap); 	ret = regmap_read(max77705->regmap, MAX77705_PMIC_REG_PMICREV, &pmic_rev_value);	if (ret < 0)		return -ENODEV; 	pmic_rev = pmic_rev_value & MAX77705_REVISION_MASK;	if (pmic_rev != MAX77705_PASS3)		return dev_err_probe(dev, -ENODEV, "Rev.0x%x is not tested\n", pmic_rev); 	/* Active Discharge Enable */	regmap_update_bits(max77705->regmap, MAX77705_PMIC_REG_MAINCTRL1, 1, 1); 	ret = devm_regmap_add_irq_chip(dev, max77705->regmap,					i2c->irq,					IRQF_ONESHOT, 0,					&max77705_irq_chip,					&irq_data);	if (ret)		return dev_err_probe(dev, ret, "Failed to add IRQ chip\n"); 	domain = regmap_irq_get_domain(irq_data); 	ret = devm_mfd_add_devices(dev, PLATFORM_DEVID_NONE,				   max77705_devs, ARRAY_SIZE(max77705_devs),				   NULL, 0, domain);	if (ret)		return dev_err_probe(dev, ret, "Failed to register child devices\n"); 	ret = devm_device_init_wakeup(dev);	if (ret)		return dev_err_probe(dev, ret, "Failed to init wakeup\n"); 	return 0;} static int max77705_suspend(struct device *dev){	struct i2c_client *i2c = to_i2c_client(dev); 	disable_irq(i2c->irq); 	if (device_may_wakeup(dev))		enable_irq_wake(i2c->irq); 	return 0;} static int max77705_resume(struct device *dev){	struct i2c_client *i2c = to_i2c_client(dev); 	if (device_may_wakeup(dev))		disable_irq_wake(i2c->irq); 	enable_irq(i2c->irq); 	return 0;}static DEFINE_SIMPLE_DEV_PM_OPS(max77705_pm_ops, max77705_suspend, max77705_resume); static const struct of_device_id max77705_i2c_of_match[] = {	{ .compatible = "maxim,max77705" },	{ }};MODULE_DEVICE_TABLE(of, max77705_i2c_of_match); static struct i2c_driver max77705_i2c_driver = {	.driver = {		.name			= "max77705",		.of_match_table		= max77705_i2c_of_match,		.pm			= pm_sleep_ptr(&max77705_pm_ops),	},	.probe = max77705_i2c_probe};module_i2c_driver(max77705_i2c_driver); MODULE_DESCRIPTION("Maxim MAX77705 PMIC core driver");MODULE_AUTHOR("Dzmitry Sankouski <dsankouski@gmail.com>");MODULE_LICENSE("GPL");