// SPDX-License-Identifier: GPL-2.0-only/* * Copyright (C) 2022 Richtek Technology Corp. * Author: ChiYuan Huang <cy_huang@richtek.com> */ #include <linux/i2c.h>#include <linux/kernel.h>#include <linux/mfd/core.h>#include <linux/module.h>#include <linux/regmap.h> #define RT5120_REG_INTENABLE	0x1D#define RT5120_REG_INTSTAT	0x1E#define RT5120_REG_FZCMODE	0x44 #define RT5120_INT_HOTDIE	0#define RT5120_INT_PWRKEY_REL	5#define RT5120_INT_PWRKEY_PRESS	6 static const struct regmap_range rt5120_rd_yes_ranges[] = {	regmap_reg_range(0x03, 0x13),	regmap_reg_range(0x1c, 0x20),	regmap_reg_range(0x44, 0x44),}; static const struct regmap_range rt5120_wr_yes_ranges[] = {	regmap_reg_range(0x06, 0x13),	regmap_reg_range(0x1c, 0x20),	regmap_reg_range(0x44, 0x44),}; static const struct regmap_access_table rt5120_rd_table = {	.yes_ranges = rt5120_rd_yes_ranges,	.n_yes_ranges = ARRAY_SIZE(rt5120_rd_yes_ranges),}; static const struct regmap_access_table rt5120_wr_table = {	.yes_ranges = rt5120_wr_yes_ranges,	.n_yes_ranges = ARRAY_SIZE(rt5120_wr_yes_ranges),}; static const struct regmap_config rt5120_regmap_config = {	.reg_bits = 8,	.val_bits = 8,	.max_register = RT5120_REG_FZCMODE, 	.wr_table = &rt5120_wr_table,	.rd_table = &rt5120_rd_table,}; static const struct regmap_irq rt5120_irqs[] = {	REGMAP_IRQ_REG_LINE(RT5120_INT_HOTDIE, 8),	REGMAP_IRQ_REG_LINE(RT5120_INT_PWRKEY_REL, 8),	REGMAP_IRQ_REG_LINE(RT5120_INT_PWRKEY_PRESS, 8),}; static const struct regmap_irq_chip rt5120_irq_chip = {	.name = "rt5120-pmic",	.status_base = RT5120_REG_INTSTAT,	.unmask_base = RT5120_REG_INTENABLE,	.ack_base = RT5120_REG_INTSTAT,	.use_ack = true,	.num_regs = 1,	.irqs = rt5120_irqs,	.num_irqs = ARRAY_SIZE(rt5120_irqs),}; static const struct resource rt5120_regulator_resources[] = {	DEFINE_RES_IRQ(RT5120_INT_HOTDIE),}; static const struct resource rt5120_pwrkey_resources[] = {	DEFINE_RES_IRQ_NAMED(RT5120_INT_PWRKEY_PRESS, "pwrkey-press"),	DEFINE_RES_IRQ_NAMED(RT5120_INT_PWRKEY_REL, "pwrkey-release"),}; static const struct mfd_cell rt5120_devs[] = {	MFD_CELL_RES("rt5120-regulator", rt5120_regulator_resources),	MFD_CELL_OF("rt5120-pwrkey", rt5120_pwrkey_resources, NULL, 0, 0, "richtek,rt5120-pwrkey"),}; static int rt5120_probe(struct i2c_client *i2c){	struct device *dev = &i2c->dev;	struct regmap *regmap;	struct regmap_irq_chip_data *irq_data;	int ret; 	regmap = devm_regmap_init_i2c(i2c, &rt5120_regmap_config);	if (IS_ERR(regmap))		return dev_err_probe(dev, PTR_ERR(regmap),				     "Failed to init regmap\n"); 	ret = devm_regmap_add_irq_chip(dev, regmap, i2c->irq, IRQF_ONESHOT, 0,				       &rt5120_irq_chip, &irq_data);	if (ret)		return dev_err_probe(dev, ret, "Failed to add IRQ chip\n"); 	return devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO, rt5120_devs,				    ARRAY_SIZE(rt5120_devs), NULL, 0,				    regmap_irq_get_domain(irq_data));} static const struct of_device_id rt5120_device_match_table[] = {	{ .compatible = "richtek,rt5120" },	{}};MODULE_DEVICE_TABLE(of, rt5120_device_match_table); static struct i2c_driver rt5120_driver = {	.driver = {		.name = "rt5120",		.of_match_table = rt5120_device_match_table,	},	.probe = rt5120_probe,};module_i2c_driver(rt5120_driver); MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");MODULE_DESCRIPTION("Richtek RT5120 I2C driver");MODULE_LICENSE("GPL v2");