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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Copyright (C) 2022 Richtek Technology Corp.4 * Author: ChiYuan Huang <cy_huang@richtek.com>5 */6 7#include <linux/i2c.h>8#include <linux/kernel.h>9#include <linux/mfd/core.h>10#include <linux/module.h>11#include <linux/mod_devicetable.h>12#include <linux/regmap.h>13 14#define RT5120_REG_INTENABLE 0x1D15#define RT5120_REG_INTSTAT 0x1E16#define RT5120_REG_FZCMODE 0x4417 18#define RT5120_INT_HOTDIE 019#define RT5120_INT_PWRKEY_REL 520#define RT5120_INT_PWRKEY_PRESS 621 22static const struct regmap_range rt5120_rd_yes_ranges[] = {23 regmap_reg_range(0x03, 0x13),24 regmap_reg_range(0x1c, 0x20),25 regmap_reg_range(0x44, 0x44),26};27 28static const struct regmap_range rt5120_wr_yes_ranges[] = {29 regmap_reg_range(0x06, 0x13),30 regmap_reg_range(0x1c, 0x20),31 regmap_reg_range(0x44, 0x44),32};33 34static const struct regmap_access_table rt5120_rd_table = {35 .yes_ranges = rt5120_rd_yes_ranges,36 .n_yes_ranges = ARRAY_SIZE(rt5120_rd_yes_ranges),37};38 39static const struct regmap_access_table rt5120_wr_table = {40 .yes_ranges = rt5120_wr_yes_ranges,41 .n_yes_ranges = ARRAY_SIZE(rt5120_wr_yes_ranges),42};43 44static const struct regmap_config rt5120_regmap_config = {45 .reg_bits = 8,46 .val_bits = 8,47 .max_register = RT5120_REG_FZCMODE,48 49 .wr_table = &rt5120_wr_table,50 .rd_table = &rt5120_rd_table,51};52 53static const struct regmap_irq rt5120_irqs[] = {54 REGMAP_IRQ_REG_LINE(RT5120_INT_HOTDIE, 8),55 REGMAP_IRQ_REG_LINE(RT5120_INT_PWRKEY_REL, 8),56 REGMAP_IRQ_REG_LINE(RT5120_INT_PWRKEY_PRESS, 8),57};58 59static const struct regmap_irq_chip rt5120_irq_chip = {60 .name = "rt5120-pmic",61 .status_base = RT5120_REG_INTSTAT,62 .unmask_base = RT5120_REG_INTENABLE,63 .ack_base = RT5120_REG_INTSTAT,64 .use_ack = true,65 .num_regs = 1,66 .irqs = rt5120_irqs,67 .num_irqs = ARRAY_SIZE(rt5120_irqs),68};69 70static const struct resource rt5120_regulator_resources[] = {71 DEFINE_RES_IRQ(RT5120_INT_HOTDIE),72};73 74static const struct resource rt5120_pwrkey_resources[] = {75 DEFINE_RES_IRQ_NAMED(RT5120_INT_PWRKEY_PRESS, "pwrkey-press"),76 DEFINE_RES_IRQ_NAMED(RT5120_INT_PWRKEY_REL, "pwrkey-release"),77};78 79static const struct mfd_cell rt5120_devs[] = {80 MFD_CELL_RES("rt5120-regulator", rt5120_regulator_resources),81 MFD_CELL_OF("rt5120-pwrkey", rt5120_pwrkey_resources, NULL, 0, 0, "richtek,rt5120-pwrkey"),82};83 84static int rt5120_probe(struct i2c_client *i2c)85{86 struct device *dev = &i2c->dev;87 struct regmap *regmap;88 struct regmap_irq_chip_data *irq_data;89 int ret;90 91 regmap = devm_regmap_init_i2c(i2c, &rt5120_regmap_config);92 if (IS_ERR(regmap))93 return dev_err_probe(dev, PTR_ERR(regmap),94 "Failed to init regmap\n");95 96 ret = devm_regmap_add_irq_chip(dev, regmap, i2c->irq, IRQF_ONESHOT, 0,97 &rt5120_irq_chip, &irq_data);98 if (ret)99 return dev_err_probe(dev, ret, "Failed to add IRQ chip\n");100 101 return devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO, rt5120_devs,102 ARRAY_SIZE(rt5120_devs), NULL, 0,103 regmap_irq_get_domain(irq_data));104}105 106static const struct of_device_id rt5120_device_match_table[] = {107 { .compatible = "richtek,rt5120" },108 {}109};110MODULE_DEVICE_TABLE(of, rt5120_device_match_table);111 112static struct i2c_driver rt5120_driver = {113 .driver = {114 .name = "rt5120",115 .of_match_table = rt5120_device_match_table,116 },117 .probe = rt5120_probe,118};119module_i2c_driver(rt5120_driver);120 121MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>");122MODULE_DESCRIPTION("Richtek RT5120 I2C driver");123MODULE_LICENSE("GPL v2");124