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1// SPDX-License-Identifier: GPL-2.0-or-later2 /* I2C access for DA9055 PMICs.3 *4 * Copyright(c) 2012 Dialog Semiconductor Ltd.5 *6 * Author: David Dajun Chen <dchen@diasemi.com>7 */8 9#include <linux/module.h>10#include <linux/device.h>11#include <linux/i2c.h>12#include <linux/err.h>13#include <linux/of.h>14 15#include <linux/mfd/da9055/core.h>16 17static int da9055_i2c_probe(struct i2c_client *i2c)18{19 struct da9055 *da9055;20 int ret;21 22 da9055 = devm_kzalloc(&i2c->dev, sizeof(struct da9055), GFP_KERNEL);23 if (!da9055)24 return -ENOMEM;25 26 da9055->regmap = devm_regmap_init_i2c(i2c, &da9055_regmap_config);27 if (IS_ERR(da9055->regmap)) {28 ret = PTR_ERR(da9055->regmap);29 dev_err(&i2c->dev, "Failed to allocate register map: %d\n",30 ret);31 return ret;32 }33 34 da9055->dev = &i2c->dev;35 da9055->chip_irq = i2c->irq;36 37 i2c_set_clientdata(i2c, da9055);38 39 return da9055_device_init(da9055);40}41 42static void da9055_i2c_remove(struct i2c_client *i2c)43{44 struct da9055 *da9055 = i2c_get_clientdata(i2c);45 46 da9055_device_exit(da9055);47}48 49/*50 * DO NOT change the device Ids. The naming is intentionally specific as both51 * the PMIC and CODEC parts of this chip are instantiated separately as I2C52 * devices (both have configurable I2C addresses, and are to all intents and53 * purposes separate). As a result there are specific DA9055 ids for PMIC54 * and CODEC, which must be different to operate together.55 */56static const struct i2c_device_id da9055_i2c_id[] = {57 { "da9055-pmic" },58 { }59};60MODULE_DEVICE_TABLE(i2c, da9055_i2c_id);61 62static const struct of_device_id da9055_of_match[] = {63 { .compatible = "dlg,da9055-pmic", },64 { }65};66 67static struct i2c_driver da9055_i2c_driver = {68 .probe = da9055_i2c_probe,69 .remove = da9055_i2c_remove,70 .id_table = da9055_i2c_id,71 .driver = {72 .name = "da9055-pmic",73 .of_match_table = da9055_of_match,74 },75};76 77static int __init da9055_i2c_init(void)78{79 int ret;80 81 ret = i2c_add_driver(&da9055_i2c_driver);82 if (ret != 0) {83 pr_err("DA9055 I2C registration failed %d\n", ret);84 return ret;85 }86 87 return 0;88}89subsys_initcall(da9055_i2c_init);90 91static void __exit da9055_i2c_exit(void)92{93 i2c_del_driver(&da9055_i2c_driver);94}95module_exit(da9055_i2c_exit);96 97MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");98MODULE_DESCRIPTION("I2C driver for Dialog DA9055 PMIC");99