sound/soc/codecs/pcm179x-i2c.c

   1 /*
   2  * PCM179X ASoC I2C driver
   3  *
   4  * Copyright (c) Teenage Engineering AB 2016
   5  *
   6  *     Jacob Siverskog <jacob@teenage.engineering>
   7  *
   8  * This program is free software; you can redistribute it and/or
   9  * modify it under the terms of the GNU General Public License
  10  * as published by the Free Software Foundation; either version 2
  11  * of the License, or (at your option) any later version.
  12  *
  13  * This program is distributed in the hope that it will be useful,
  14  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  15  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  16  * GNU General Public License for more details.
  17  */
  18
  19 #include <linux/module.h>
  20 #include <linux/of.h>
  21 #include <linux/i2c.h>
  22 #include <linux/regmap.h>
  23
  24 #include "pcm179x.h"
  25
  26 static int pcm179x_i2c_probe(struct i2c_client *client,
  27                               const struct i2c_device_id *id)
  28 {
  29         struct regmap *regmap;
  30         int ret;
  31
  32         regmap = devm_regmap_init_i2c(client, &pcm179x_regmap_config);
  33         if (IS_ERR(regmap)) {
  34                 ret = PTR_ERR(regmap);
  35                 dev_err(&client->dev, "Failed to allocate regmap: %d\n", ret);
  36                 return ret;
  37         }
  38
  39         return pcm179x_common_init(&client->dev, regmap);
  40 }
  41
  42 static int pcm179x_i2c_remove(struct i2c_client *client)
  43 {
  44         return pcm179x_common_exit(&client->dev);
  45 }
  46
  47 static const struct of_device_id pcm179x_of_match[] = {
  48         { .compatible = "ti,pcm1792a", },
  49         { }
  50 };
  51 MODULE_DEVICE_TABLE(of, pcm179x_of_match);
  52
  53 static const struct i2c_device_id pcm179x_i2c_ids[] = {
  54         { "pcm179x", 0 },
  55         { }
  56 };
  57 MODULE_DEVICE_TABLE(i2c, pcm179x_i2c_ids);
  58
  59 static struct i2c_driver pcm179x_i2c_driver = {
  60         .driver = {
  61                 .name   = "pcm179x",
  62                 .of_match_table = of_match_ptr(pcm179x_of_match),
  63         },
  64         .id_table       = pcm179x_i2c_ids,
  65         .probe          = pcm179x_i2c_probe,
  66         .remove         = pcm179x_i2c_remove,
  67 };
  68
  69 module_i2c_driver(pcm179x_i2c_driver);
  70
  71 MODULE_DESCRIPTION("ASoC PCM179X I2C driver");
  72 MODULE_AUTHOR("Jacob Siverskog <jacob@teenage.engineering>");
  73 MODULE_LICENSE("GPL");