// SPDX-License-Identifier: GPL-2.0-or-later /* I2C access for DA9055 PMICs. * * Copyright(c) 2012 Dialog Semiconductor Ltd. * * Author: David Dajun Chen <dchen@diasemi.com> */ #include <linux/module.h> #include <linux/device.h> #include <linux/i2c.h> #include <linux/err.h> #include <linux/of.h> #include <linux/of_device.h> #include <linux/mfd/da9055/core.h> static int da9055_i2c_probe(struct i2c_client *i2c) { struct da9055 *da9055; int ret; da9055 = devm_kzalloc(&i2c->dev, sizeof(struct da9055), GFP_KERNEL); if (!da9055) return -ENOMEM; da9055->regmap = devm_regmap_init_i2c(i2c, &da9055_regmap_config); if (IS_ERR(da9055->regmap)) { ret = PTR_ERR(da9055->regmap); dev_err(&i2c->dev, "Failed to allocate register map: %d\n", ret); return ret; } da9055->dev = &i2c->dev; da9055->chip_irq = i2c->irq; i2c_set_clientdata(i2c, da9055); return da9055_device_init(da9055); } static void da9055_i2c_remove(struct i2c_client *i2c) { struct da9055 *da9055 = i2c_get_clientdata(i2c); da9055_device_exit(da9055); } /* * DO NOT change the device Ids. The naming is intentionally specific as both * the PMIC and CODEC parts of this chip are instantiated separately as I2C * devices (both have configurable I2C addresses, and are to all intents and * purposes separate). As a result there are specific DA9055 ids for PMIC * and CODEC, which must be different to operate together. */ static const struct i2c_device_id da9055_i2c_id[] = { {"da9055-pmic", 0}, { } }; MODULE_DEVICE_TABLE(i2c, da9055_i2c_id); static const struct of_device_id da9055_of_match[] = { { .compatible = "dlg,da9055-pmic", }, { } }; static struct i2c_driver da9055_i2c_driver = { .probe = da9055_i2c_probe, .remove = da9055_i2c_remove, .id_table = da9055_i2c_id, .driver = { .name = "da9055-pmic", .of_match_table = da9055_of_match, }, }; static int __init da9055_i2c_init(void) { int ret; ret = i2c_add_driver(&da9055_i2c_driver); if (ret != 0) { pr_err("DA9055 I2C registration failed %d\n", ret); return ret; } return 0; } subsys_initcall(da9055_i2c_init); static void __exit da9055_i2c_exit(void) { i2c_del_driver(&da9055_i2c_driver); } module_exit(da9055_i2c_exit); MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>"); MODULE_DESCRIPTION("I2C driver for Dialog DA9055 PMIC");