sound/soc/codecs/pcm512x-i2c.c

   1 /*
   2  * Driver for the PCM512x CODECs
   3  *
   4  * Author:      Mark Brown <broonie@kernel.org>
   5  *              Copyright 2014 Linaro Ltd
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License
   9  * version 2 as published by the Free Software Foundation.
  10  *
  11  * This program is distributed in the hope that it will be useful, but
  12  * WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  14  * General Public License for more details.
  15  */
  16
  17 #include <linux/init.h>
  18 #include <linux/module.h>
  19 #include <linux/i2c.h>
  20
  21 #include "pcm512x.h"
  22
  23 static int pcm512x_i2c_probe(struct i2c_client *i2c,
  24                              const struct i2c_device_id *id)
  25 {
  26         struct regmap *regmap;
  27         struct regmap_config config = pcm512x_regmap;
  28
  29         /* msb needs to be set to enable auto-increment of addresses */
  30         config.read_flag_mask = 0x80;
  31         config.write_flag_mask = 0x80;
  32
  33         regmap = devm_regmap_init_i2c(i2c, &config);
  34         if (IS_ERR(regmap))
  35                 return PTR_ERR(regmap);
  36
  37         return pcm512x_probe(&i2c->dev, regmap);
  38 }
  39
  40 static int pcm512x_i2c_remove(struct i2c_client *i2c)
  41 {
  42         pcm512x_remove(&i2c->dev);
  43         return 0;
  44 }
  45
  46 static const struct i2c_device_id pcm512x_i2c_id[] = {
  47         { "pcm5121", },
  48         { "pcm5122", },
  49         { "pcm5141", },
  50         { "pcm5142", },
  51         { }
  52 };
  53 MODULE_DEVICE_TABLE(i2c, pcm512x_i2c_id);
  54
  55 static const struct of_device_id pcm512x_of_match[] = {
  56         { .compatible = "ti,pcm5121", },
  57         { .compatible = "ti,pcm5122", },
  58         { .compatible = "ti,pcm5141", },
  59         { .compatible = "ti,pcm5142", },
  60         { }
  61 };
  62 MODULE_DEVICE_TABLE(of, pcm512x_of_match);
  63
  64 static struct i2c_driver pcm512x_i2c_driver = {
  65         .probe          = pcm512x_i2c_probe,
  66         .remove         = pcm512x_i2c_remove,
  67         .id_table       = pcm512x_i2c_id,
  68         .driver         = {
  69                 .name   = "pcm512x",
  70                 .of_match_table = pcm512x_of_match,
  71                 .pm     = &pcm512x_pm_ops,
  72         },
  73 };
  74
  75 module_i2c_driver(pcm512x_i2c_driver);
  76
  77 MODULE_DESCRIPTION("ASoC PCM512x codec driver - I2C");
  78 MODULE_AUTHOR("Mark Brown <broonie@kernel.org>");
  79 MODULE_LICENSE("GPL v2");