sound/soc/codecs/cs4271-spi.c

   1 /*
   2  * CS4271 SPI audio driver
   3  *
   4  * Copyright (c) 2010 Alexander Sverdlin <subaparts@yandex.ru>
   5  *
   6  * This program is free software; you can redistribute it and/or
   7  * modify it under the terms of the GNU General Public License
   8  * as published by the Free Software Foundation; either version 2
   9  * of the License, or (at your option) any later version.
  10  *
  11  * This program is distributed in the hope that it will be useful,
  12  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  13  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  14  * GNU General Public License for more details.
  15  */
  16
  17 #include <linux/module.h>
  18 #include <linux/spi/spi.h>
  19 #include <linux/regmap.h>
  20 #include <sound/soc.h>
  21 #include "cs4271.h"
  22
  23 static int cs4271_spi_probe(struct spi_device *spi)
  24 {
  25         struct regmap_config config;
  26
  27         config = cs4271_regmap_config;
  28         config.reg_bits = 16;
  29         config.val_bits = 8;
  30         config.read_flag_mask = 0x21;
  31         config.write_flag_mask = 0x20;
  32
  33         return cs4271_probe(&spi->dev, devm_regmap_init_spi(spi, &config));
  34 }
  35
  36 static int cs4271_spi_remove(struct spi_device *spi)
  37 {
  38         snd_soc_unregister_codec(&spi->dev);
  39         return 0;
  40 }
  41
  42 static struct spi_driver cs4271_spi_driver = {
  43         .driver = {
  44                 .name   = "cs4271",
  45                 .of_match_table = of_match_ptr(cs4271_dt_ids),
  46         },
  47         .probe          = cs4271_spi_probe,
  48         .remove         = cs4271_spi_remove,
  49 };
  50 module_spi_driver(cs4271_spi_driver);
  51
  52 MODULE_DESCRIPTION("ASoC CS4271 SPI Driver");
  53 MODULE_AUTHOR("Alexander Sverdlin <subaparts@yandex.ru>");
  54 MODULE_LICENSE("GPL");