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 const struct of_device_id pcm179x_of_match[] = {
  42         { .compatible = "ti,pcm1792a", },
  43         { }
  44 };
  45 MODULE_DEVICE_TABLE(of, pcm179x_of_match);
  46
  47 static const struct spi_device_id pcm179x_spi_ids[] = {
  48         { "pcm179x", 0 },
  49         { },
  50 };
  51 MODULE_DEVICE_TABLE(spi, pcm179x_spi_ids);
  52
  53 static struct spi_driver pcm179x_spi_driver = {
  54         .driver = {
  55                 .name = "pcm179x",
  56                 .of_match_table = of_match_ptr(pcm179x_of_match),
  57         },
  58         .id_table = pcm179x_spi_ids,
  59         .probe = pcm179x_spi_probe,
  60 };
  61
  62 module_spi_driver(pcm179x_spi_driver);
  63
  64 MODULE_DESCRIPTION("ASoC PCM179X SPI driver");
  65 MODULE_AUTHOR("Michael Trimarchi <michael@amarulasolutions.com>");
  66 MODULE_LICENSE("GPL");