1*4e4627e1SChiYuan Huang // SPDX-License-Identifier: GPL-2.0-only 2*4e4627e1SChiYuan Huang /* 3*4e4627e1SChiYuan Huang * Copyright (C) 2022 Richtek Technology Corp. 4*4e4627e1SChiYuan Huang * Author: ChiYuan Huang <cy_huang@richtek.com> 5*4e4627e1SChiYuan Huang */ 6*4e4627e1SChiYuan Huang 7*4e4627e1SChiYuan Huang #include <linux/i2c.h> 8*4e4627e1SChiYuan Huang #include <linux/kernel.h> 9*4e4627e1SChiYuan Huang #include <linux/mfd/core.h> 10*4e4627e1SChiYuan Huang #include <linux/module.h> 11*4e4627e1SChiYuan Huang #include <linux/mod_devicetable.h> 12*4e4627e1SChiYuan Huang #include <linux/regmap.h> 13*4e4627e1SChiYuan Huang 14*4e4627e1SChiYuan Huang #define RT5120_REG_INTENABLE 0x1D 15*4e4627e1SChiYuan Huang #define RT5120_REG_INTSTAT 0x1E 16*4e4627e1SChiYuan Huang #define RT5120_REG_FZCMODE 0x44 17*4e4627e1SChiYuan Huang 18*4e4627e1SChiYuan Huang #define RT5120_INT_HOTDIE 0 19*4e4627e1SChiYuan Huang #define RT5120_INT_PWRKEY_REL 5 20*4e4627e1SChiYuan Huang #define RT5120_INT_PWRKEY_PRESS 6 21*4e4627e1SChiYuan Huang 22*4e4627e1SChiYuan Huang static const struct regmap_range rt5120_rd_yes_ranges[] = { 23*4e4627e1SChiYuan Huang regmap_reg_range(0x03, 0x13), 24*4e4627e1SChiYuan Huang regmap_reg_range(0x1c, 0x20), 25*4e4627e1SChiYuan Huang regmap_reg_range(0x44, 0x44), 26*4e4627e1SChiYuan Huang }; 27*4e4627e1SChiYuan Huang 28*4e4627e1SChiYuan Huang static const struct regmap_range rt5120_wr_yes_ranges[] = { 29*4e4627e1SChiYuan Huang regmap_reg_range(0x06, 0x13), 30*4e4627e1SChiYuan Huang regmap_reg_range(0x1c, 0x20), 31*4e4627e1SChiYuan Huang regmap_reg_range(0x44, 0x44), 32*4e4627e1SChiYuan Huang }; 33*4e4627e1SChiYuan Huang 34*4e4627e1SChiYuan Huang static const struct regmap_access_table rt5120_rd_table = { 35*4e4627e1SChiYuan Huang .yes_ranges = rt5120_rd_yes_ranges, 36*4e4627e1SChiYuan Huang .n_yes_ranges = ARRAY_SIZE(rt5120_rd_yes_ranges), 37*4e4627e1SChiYuan Huang }; 38*4e4627e1SChiYuan Huang 39*4e4627e1SChiYuan Huang static const struct regmap_access_table rt5120_wr_table = { 40*4e4627e1SChiYuan Huang .yes_ranges = rt5120_wr_yes_ranges, 41*4e4627e1SChiYuan Huang .n_yes_ranges = ARRAY_SIZE(rt5120_wr_yes_ranges), 42*4e4627e1SChiYuan Huang }; 43*4e4627e1SChiYuan Huang 44*4e4627e1SChiYuan Huang static const struct regmap_config rt5120_regmap_config = { 45*4e4627e1SChiYuan Huang .reg_bits = 8, 46*4e4627e1SChiYuan Huang .val_bits = 8, 47*4e4627e1SChiYuan Huang .max_register = RT5120_REG_FZCMODE, 48*4e4627e1SChiYuan Huang 49*4e4627e1SChiYuan Huang .wr_table = &rt5120_wr_table, 50*4e4627e1SChiYuan Huang .rd_table = &rt5120_rd_table, 51*4e4627e1SChiYuan Huang }; 52*4e4627e1SChiYuan Huang 53*4e4627e1SChiYuan Huang static const struct regmap_irq rt5120_irqs[] = { 54*4e4627e1SChiYuan Huang REGMAP_IRQ_REG_LINE(RT5120_INT_HOTDIE, 8), 55*4e4627e1SChiYuan Huang REGMAP_IRQ_REG_LINE(RT5120_INT_PWRKEY_REL, 8), 56*4e4627e1SChiYuan Huang REGMAP_IRQ_REG_LINE(RT5120_INT_PWRKEY_PRESS, 8), 57*4e4627e1SChiYuan Huang }; 58*4e4627e1SChiYuan Huang 59*4e4627e1SChiYuan Huang static const struct regmap_irq_chip rt5120_irq_chip = { 60*4e4627e1SChiYuan Huang .name = "rt5120-pmic", 61*4e4627e1SChiYuan Huang .status_base = RT5120_REG_INTSTAT, 62*4e4627e1SChiYuan Huang .mask_base = RT5120_REG_INTENABLE, 63*4e4627e1SChiYuan Huang .ack_base = RT5120_REG_INTSTAT, 64*4e4627e1SChiYuan Huang .mask_invert = true, 65*4e4627e1SChiYuan Huang .use_ack = true, 66*4e4627e1SChiYuan Huang .num_regs = 1, 67*4e4627e1SChiYuan Huang .irqs = rt5120_irqs, 68*4e4627e1SChiYuan Huang .num_irqs = ARRAY_SIZE(rt5120_irqs), 69*4e4627e1SChiYuan Huang }; 70*4e4627e1SChiYuan Huang 71*4e4627e1SChiYuan Huang static const struct resource rt5120_regulator_resources[] = { 72*4e4627e1SChiYuan Huang DEFINE_RES_IRQ(RT5120_INT_HOTDIE), 73*4e4627e1SChiYuan Huang }; 74*4e4627e1SChiYuan Huang 75*4e4627e1SChiYuan Huang static const struct resource rt5120_pwrkey_resources[] = { 76*4e4627e1SChiYuan Huang DEFINE_RES_IRQ_NAMED(RT5120_INT_PWRKEY_PRESS, "pwrkey-press"), 77*4e4627e1SChiYuan Huang DEFINE_RES_IRQ_NAMED(RT5120_INT_PWRKEY_REL, "pwrkey-release"), 78*4e4627e1SChiYuan Huang }; 79*4e4627e1SChiYuan Huang 80*4e4627e1SChiYuan Huang static const struct mfd_cell rt5120_devs[] = { 81*4e4627e1SChiYuan Huang MFD_CELL_RES("rt5120-regulator", rt5120_regulator_resources), 82*4e4627e1SChiYuan Huang MFD_CELL_OF("rt5120-pwrkey", rt5120_pwrkey_resources, NULL, 0, 0, "richtek,rt5120-pwrkey"), 83*4e4627e1SChiYuan Huang }; 84*4e4627e1SChiYuan Huang 85*4e4627e1SChiYuan Huang static int rt5120_probe(struct i2c_client *i2c) 86*4e4627e1SChiYuan Huang { 87*4e4627e1SChiYuan Huang struct device *dev = &i2c->dev; 88*4e4627e1SChiYuan Huang struct regmap *regmap; 89*4e4627e1SChiYuan Huang struct regmap_irq_chip_data *irq_data; 90*4e4627e1SChiYuan Huang int ret; 91*4e4627e1SChiYuan Huang 92*4e4627e1SChiYuan Huang regmap = devm_regmap_init_i2c(i2c, &rt5120_regmap_config); 93*4e4627e1SChiYuan Huang if (IS_ERR(regmap)) 94*4e4627e1SChiYuan Huang return dev_err_probe(dev, PTR_ERR(regmap), 95*4e4627e1SChiYuan Huang "Failed to init regmap\n"); 96*4e4627e1SChiYuan Huang 97*4e4627e1SChiYuan Huang ret = devm_regmap_add_irq_chip(dev, regmap, i2c->irq, IRQF_ONESHOT, 0, 98*4e4627e1SChiYuan Huang &rt5120_irq_chip, &irq_data); 99*4e4627e1SChiYuan Huang if (ret) 100*4e4627e1SChiYuan Huang return dev_err_probe(dev, ret, "Failed to add IRQ chip\n"); 101*4e4627e1SChiYuan Huang 102*4e4627e1SChiYuan Huang return devm_mfd_add_devices(dev, PLATFORM_DEVID_AUTO, rt5120_devs, 103*4e4627e1SChiYuan Huang ARRAY_SIZE(rt5120_devs), NULL, 0, 104*4e4627e1SChiYuan Huang regmap_irq_get_domain(irq_data)); 105*4e4627e1SChiYuan Huang } 106*4e4627e1SChiYuan Huang 107*4e4627e1SChiYuan Huang static const struct of_device_id rt5120_device_match_table[] = { 108*4e4627e1SChiYuan Huang { .compatible = "richtek,rt5120" }, 109*4e4627e1SChiYuan Huang {} 110*4e4627e1SChiYuan Huang }; 111*4e4627e1SChiYuan Huang MODULE_DEVICE_TABLE(of, rt5120_device_match_table); 112*4e4627e1SChiYuan Huang 113*4e4627e1SChiYuan Huang static struct i2c_driver rt5120_driver = { 114*4e4627e1SChiYuan Huang .driver = { 115*4e4627e1SChiYuan Huang .name = "rt5120", 116*4e4627e1SChiYuan Huang .of_match_table = rt5120_device_match_table, 117*4e4627e1SChiYuan Huang }, 118*4e4627e1SChiYuan Huang .probe_new = rt5120_probe, 119*4e4627e1SChiYuan Huang }; 120*4e4627e1SChiYuan Huang module_i2c_driver(rt5120_driver); 121*4e4627e1SChiYuan Huang 122*4e4627e1SChiYuan Huang MODULE_AUTHOR("ChiYuan Huang <cy_huang@richtek.com>"); 123*4e4627e1SChiYuan Huang MODULE_DESCRIPTION("Richtek RT5120 I2C driver"); 124*4e4627e1SChiYuan Huang MODULE_LICENSE("GPL v2"); 125