soc/codecs/wm8731-i2c.c

0001 // SPDX-License-Identifier: GPL-2.0-only
0002 /*
0003  * wm8731-i2c.c  --  WM8731 ALSA SoC Audio driver I2C code
0004  *
0005  * Copyright 2005 Openedhand Ltd.
0006  * Copyright 2006-12 Wolfson Microelectronics, plc
0007  *
0008  * Author: Richard Purdie <richard@openedhand.com>
0009  *
0010  * Based on wm8753.c by Liam Girdwood
0011  */
0012
0013 #include <linux/i2c.h>
0014 #include <linux/module.h>
0015 #include <linux/of_device.h>
0016
0017 #include "wm8731.h"
0018
0019
0020 static const struct of_device_id wm8731_of_match[] = {
0021     { .compatible = "wlf,wm8731", },
0022     { }
0023 };
0024 MODULE_DEVICE_TABLE(of, wm8731_of_match);
0025
0026 static int wm8731_i2c_probe(struct i2c_client *i2c)
0027 {
0028     struct wm8731_priv *wm8731;
0029     int ret;
0030
0031     wm8731 = devm_kzalloc(&i2c->dev, sizeof(struct wm8731_priv),
0032                   GFP_KERNEL);
0033     if (wm8731 == NULL)
0034         return -ENOMEM;
0035
0036     i2c_set_clientdata(i2c, wm8731);
0037
0038     wm8731->regmap = devm_regmap_init_i2c(i2c, &wm8731_regmap);
0039     if (IS_ERR(wm8731->regmap)) {
0040         ret = PTR_ERR(wm8731->regmap);
0041         dev_err(&i2c->dev, "Failed to allocate register map: %d\n",
0042             ret);
0043         return ret;
0044     }
0045
0046     return wm8731_init(&i2c->dev, wm8731);
0047 }
0048
0049 static const struct i2c_device_id wm8731_i2c_id[] = {
0050     { "wm8731", 0 },
0051     { }
0052 };
0053 MODULE_DEVICE_TABLE(i2c, wm8731_i2c_id);
0054
0055 static struct i2c_driver wm8731_i2c_driver = {
0056     .driver = {
0057         .name = "wm8731",
0058         .of_match_table = wm8731_of_match,
0059     },
0060     .probe_new = wm8731_i2c_probe,
0061     .id_table = wm8731_i2c_id,
0062 };
0063
0064 module_i2c_driver(wm8731_i2c_driver);
0065
0066 MODULE_DESCRIPTION("ASoC WM8731 driver - I2C");
0067 MODULE_AUTHOR("Richard Purdie");
0068 MODULE_LICENSE("GPL");