forked from luck/tmp_suning_uos_patched
2874c5fd28
Based on 1 normalized pattern(s): this program is free software you can redistribute it and or modify it under the terms of the gnu general public license as published by the free software foundation either version 2 of the license or at your option any later version extracted by the scancode license scanner the SPDX license identifier GPL-2.0-or-later has been chosen to replace the boilerplate/reference in 3029 file(s). Signed-off-by: Thomas Gleixner <tglx@linutronix.de> Reviewed-by: Allison Randal <allison@lohutok.net> Cc: linux-spdx@vger.kernel.org Link: https://lkml.kernel.org/r/20190527070032.746973796@linutronix.de Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
104 lines
2.4 KiB
C
104 lines
2.4 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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/* I2C access for DA9055 PMICs.
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*
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* Copyright(c) 2012 Dialog Semiconductor Ltd.
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*
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* Author: David Dajun Chen <dchen@diasemi.com>
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*/
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#include <linux/module.h>
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#include <linux/device.h>
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#include <linux/i2c.h>
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#include <linux/err.h>
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#include <linux/of.h>
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#include <linux/of_device.h>
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#include <linux/mfd/da9055/core.h>
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static int da9055_i2c_probe(struct i2c_client *i2c,
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const struct i2c_device_id *id)
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{
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struct da9055 *da9055;
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int ret;
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da9055 = devm_kzalloc(&i2c->dev, sizeof(struct da9055), GFP_KERNEL);
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if (!da9055)
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return -ENOMEM;
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da9055->regmap = devm_regmap_init_i2c(i2c, &da9055_regmap_config);
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if (IS_ERR(da9055->regmap)) {
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ret = PTR_ERR(da9055->regmap);
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dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
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ret);
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return ret;
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}
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da9055->dev = &i2c->dev;
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da9055->chip_irq = i2c->irq;
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i2c_set_clientdata(i2c, da9055);
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return da9055_device_init(da9055);
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}
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static int da9055_i2c_remove(struct i2c_client *i2c)
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{
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struct da9055 *da9055 = i2c_get_clientdata(i2c);
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da9055_device_exit(da9055);
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return 0;
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}
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/*
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* DO NOT change the device Ids. The naming is intentionally specific as both
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* the PMIC and CODEC parts of this chip are instantiated separately as I2C
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* devices (both have configurable I2C addresses, and are to all intents and
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* purposes separate). As a result there are specific DA9055 ids for PMIC
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* and CODEC, which must be different to operate together.
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*/
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static const struct i2c_device_id da9055_i2c_id[] = {
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{"da9055-pmic", 0},
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{ }
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};
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MODULE_DEVICE_TABLE(i2c, da9055_i2c_id);
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static const struct of_device_id da9055_of_match[] = {
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{ .compatible = "dlg,da9055-pmic", },
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{ }
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};
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static struct i2c_driver da9055_i2c_driver = {
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.probe = da9055_i2c_probe,
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.remove = da9055_i2c_remove,
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.id_table = da9055_i2c_id,
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.driver = {
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.name = "da9055-pmic",
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.of_match_table = of_match_ptr(da9055_of_match),
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},
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};
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static int __init da9055_i2c_init(void)
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{
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int ret;
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ret = i2c_add_driver(&da9055_i2c_driver);
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if (ret != 0) {
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pr_err("DA9055 I2C registration failed %d\n", ret);
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return ret;
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}
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return 0;
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}
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subsys_initcall(da9055_i2c_init);
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static void __exit da9055_i2c_exit(void)
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{
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i2c_del_driver(&da9055_i2c_driver);
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}
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module_exit(da9055_i2c_exit);
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MODULE_AUTHOR("David Dajun Chen <dchen@diasemi.com>");
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MODULE_DESCRIPTION("I2C driver for Dialog DA9055 PMIC");
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MODULE_LICENSE("GPL");
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