sound/soc/codecs/pcm179x-spi.c

   1 /*
   2  * PCM179X ASoC SPI driver
   3  *
   4  * Copyright (c) Amarula Solutions B.V. 2013
   5  *
   6  *     Michael Trimarchi <michael@amarulasolutions.com>
   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/spi/spi.h>
  22 #include <linux/regmap.h>
  23
  24 #include "pcm179x.h"
  25
  26 static int pcm179x_spi_probe(struct spi_device *spi)
  27 {
  28         struct regmap *regmap;
  29         int ret;
  30
  31         regmap = devm_regmap_init_spi(spi, &pcm179x_regmap_config);
  32         if (IS_ERR(regmap)) {
  33                 ret = PTR_ERR(regmap);
  34                 dev_err(&spi->dev, "Failed to allocate regmap: %d\n", ret);
  35                 return ret;
  36         }
  37
  38         return pcm179x_common_init(&spi->dev, regmap);
  39 }
  40
  41 static int pcm179x_spi_remove(struct spi_device *spi)
  42 {
  43         return pcm179x_common_exit(&spi->dev);
  44 }
  45
  46 static const struct of_device_id pcm179x_of_match[] = {
  47         { .compatible = "ti,pcm1792a", },
  48         { }
  49 };
  50 MODULE_DEVICE_TABLE(of, pcm179x_of_match);
  51
  52 static const struct spi_device_id pcm179x_spi_ids[] = {
  53         { "pcm179x", 0 },
  54         { },
  55 };
  56 MODULE_DEVICE_TABLE(spi, pcm179x_spi_ids);
  57
  58 static struct spi_driver pcm179x_spi_driver = {
  59         .driver = {
  60                 .name = "pcm179x",
  61                 .of_match_table = of_match_ptr(pcm179x_of_match),
  62         },
  63         .id_table = pcm179x_spi_ids,
  64         .probe = pcm179x_spi_probe,
  65         .remove = pcm179x_spi_remove,
  66 };
  67
  68 module_spi_driver(pcm179x_spi_driver);
  69
  70 MODULE_DESCRIPTION("ASoC PCM179X SPI driver");
  71 MODULE_AUTHOR("Michael Trimarchi <michael@amarulasolutions.com>");
  72 MODULE_LICENSE("GPL");