sound/soc/codecs/tlv320aic23-i2c.c

   1 /*
   2  * ALSA SoC TLV320AIC23 codec driver I2C interface
   3  *
   4  * Author:      Arun KS, <arunks@mistralsolutions.com>
   5  * Copyright:   (C) 2008 Mistral Solutions Pvt Ltd.,
   6  *
   7  * Based on sound/soc/codecs/wm8731.c by Richard Purdie
   8  *
   9  * This program is free software; you can redistribute it and/or modify
  10  * it under the terms of the GNU General Public License version 2 as
  11  * published by the Free Software Foundation.
  12  */
  13
  14 #include <linux/i2c.h>
  15 #include <linux/module.h>
  16 #include <linux/regmap.h>
  17 #include <sound/soc.h>
  18
  19 #include "tlv320aic23.h"
  20
  21 static int tlv320aic23_i2c_probe(struct i2c_client *i2c,
  22                                  const struct i2c_device_id *i2c_id)
  23 {
  24         struct regmap *regmap;
  25
  26         if (!i2c_check_functionality(i2c->adapter, I2C_FUNC_SMBUS_BYTE_DATA))
  27                 return -EINVAL;
  28
  29         regmap = devm_regmap_init_i2c(i2c, &tlv320aic23_regmap);
  30         return tlv320aic23_probe(&i2c->dev, regmap);
  31 }
  32
  33 static int __exit tlv320aic23_i2c_remove(struct i2c_client *i2c)
  34 {
  35         snd_soc_unregister_codec(&i2c->dev);
  36         return 0;
  37 }
  38
  39 static const struct i2c_device_id tlv320aic23_id[] = {
  40         {"tlv320aic23", 0},
  41         {}
  42 };
  43
  44 MODULE_DEVICE_TABLE(i2c, tlv320aic23_id);
  45
  46 static struct i2c_driver tlv320aic23_i2c_driver = {
  47         .driver = {
  48                    .name = "tlv320aic23-codec",
  49                    },
  50         .probe = tlv320aic23_i2c_probe,
  51         .remove = __exit_p(tlv320aic23_i2c_remove),
  52         .id_table = tlv320aic23_id,
  53 };
  54
  55 module_i2c_driver(tlv320aic23_i2c_driver);
  56
  57 MODULE_DESCRIPTION("ASoC TLV320AIC23 codec driver I2C");
  58 MODULE_AUTHOR("Arun KS <arunks@mistralsolutions.com>");
  59 MODULE_LICENSE("GPL");