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1// SPDX-License-Identifier: GPL-2.0-only2/*3 * Arizona-i2c.c -- Arizona I2C bus interface4 *5 * Copyright 2012 Wolfson Microelectronics plc6 *7 * Author: Mark Brown <broonie@opensource.wolfsonmicro.com>8 */9 10#include <linux/err.h>11#include <linux/i2c.h>12#include <linux/module.h>13#include <linux/pm_runtime.h>14#include <linux/regmap.h>15#include <linux/regulator/consumer.h>16#include <linux/slab.h>17#include <linux/of.h>18 19#include <linux/mfd/arizona/core.h>20 21#include "arizona.h"22 23static int arizona_i2c_probe(struct i2c_client *i2c)24{25 struct arizona *arizona;26 const struct regmap_config *regmap_config = NULL;27 unsigned long type;28 int ret;29 30 type = (uintptr_t)i2c_get_match_data(i2c);31 switch (type) {32 case WM5102:33 if (IS_ENABLED(CONFIG_MFD_WM5102))34 regmap_config = &wm5102_i2c_regmap;35 break;36 case WM5110:37 case WM8280:38 if (IS_ENABLED(CONFIG_MFD_WM5110))39 regmap_config = &wm5110_i2c_regmap;40 break;41 case WM8997:42 if (IS_ENABLED(CONFIG_MFD_WM8997))43 regmap_config = &wm8997_i2c_regmap;44 break;45 case WM8998:46 case WM1814:47 if (IS_ENABLED(CONFIG_MFD_WM8998))48 regmap_config = &wm8998_i2c_regmap;49 break;50 default:51 dev_err(&i2c->dev, "Unknown device type %ld\n", type);52 return -EINVAL;53 }54 55 if (!regmap_config) {56 dev_err(&i2c->dev,57 "No kernel support for device type %ld\n", type);58 return -EINVAL;59 }60 61 arizona = devm_kzalloc(&i2c->dev, sizeof(*arizona), GFP_KERNEL);62 if (arizona == NULL)63 return -ENOMEM;64 65 arizona->regmap = devm_regmap_init_i2c(i2c, regmap_config);66 if (IS_ERR(arizona->regmap)) {67 ret = PTR_ERR(arizona->regmap);68 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",69 ret);70 return ret;71 }72 73 arizona->type = type;74 arizona->dev = &i2c->dev;75 arizona->irq = i2c->irq;76 77 return arizona_dev_init(arizona);78}79 80static void arizona_i2c_remove(struct i2c_client *i2c)81{82 struct arizona *arizona = dev_get_drvdata(&i2c->dev);83 84 arizona_dev_exit(arizona);85}86 87static const struct i2c_device_id arizona_i2c_id[] = {88 { "wm5102", WM5102 },89 { "wm5110", WM5110 },90 { "wm8280", WM8280 },91 { "wm8997", WM8997 },92 { "wm8998", WM8998 },93 { "wm1814", WM1814 },94 { }95};96MODULE_DEVICE_TABLE(i2c, arizona_i2c_id);97 98#ifdef CONFIG_OF99static const struct of_device_id arizona_i2c_of_match[] = {100 { .compatible = "wlf,wm5102", .data = (void *)WM5102 },101 { .compatible = "wlf,wm5110", .data = (void *)WM5110 },102 { .compatible = "wlf,wm8280", .data = (void *)WM8280 },103 { .compatible = "wlf,wm8997", .data = (void *)WM8997 },104 { .compatible = "wlf,wm8998", .data = (void *)WM8998 },105 { .compatible = "wlf,wm1814", .data = (void *)WM1814 },106 {},107};108MODULE_DEVICE_TABLE(of, arizona_i2c_of_match);109#endif110 111static struct i2c_driver arizona_i2c_driver = {112 .driver = {113 .name = "arizona",114 .pm = pm_ptr(&arizona_pm_ops),115 .of_match_table = of_match_ptr(arizona_i2c_of_match),116 },117 .probe = arizona_i2c_probe,118 .remove = arizona_i2c_remove,119 .id_table = arizona_i2c_id,120};121 122module_i2c_driver(arizona_i2c_driver);123 124MODULE_SOFTDEP("pre: arizona_ldo1");125MODULE_DESCRIPTION("Arizona I2C bus interface");126MODULE_AUTHOR("Mark Brown <broonie@opensource.wolfsonmicro.com>");127MODULE_LICENSE("GPL");128