sound/soc/codecs/wm8782.c

   1 /*
   2  * sound/soc/codecs/wm8782.c
   3  * simple, strap-pin configured 24bit 2ch ADC
   4  *
   5  * Copyright: 2011 Raumfeld GmbH
   6  * Author: Johannes Stezenbach <js@sig21.net>
   7  *
   8  * based on ad73311.c
   9  * Copyright:   Analog Device Inc.
  10  * Author:      Cliff Cai <cliff.cai@analog.com>
  11  *
  12  * This program is free software; you can redistribute  it and/or modify it
  13  * under  the terms of  the GNU General  Public License as published by the
  14  * Free Software Foundation;  either version 2 of the  License, or (at your
  15  * option) any later version.
  16  */
  17
  18 #include <linux/init.h>
  19 #include <linux/slab.h>
  20 #include <linux/module.h>
  21 #include <linux/kernel.h>
  22 #include <linux/device.h>
  23 #include <sound/core.h>
  24 #include <sound/pcm.h>
  25 #include <sound/ac97_codec.h>
  26 #include <sound/initval.h>
  27 #include <sound/soc.h>
  28
  29 static struct snd_soc_dai_driver wm8782_dai = {
  30         .name = "wm8782",
  31         .capture = {
  32                 .stream_name = "Capture",
  33                 .channels_min = 2,
  34                 .channels_max = 2,
  35                 /* For configurations with FSAMPEN=0 */
  36                 .rates = SNDRV_PCM_RATE_8000_48000,
  37                 .formats = SNDRV_PCM_FMTBIT_S16_LE |
  38                            SNDRV_PCM_FMTBIT_S20_3LE |
  39                            SNDRV_PCM_FMTBIT_S24_LE,
  40         },
  41 };
  42
  43 static struct snd_soc_codec_driver soc_codec_dev_wm8782;
  44
  45 static __devinit int wm8782_probe(struct platform_device *pdev)
  46 {
  47         return snd_soc_register_codec(&pdev->dev,
  48                         &soc_codec_dev_wm8782, &wm8782_dai, 1);
  49 }
  50
  51 static int __devexit wm8782_remove(struct platform_device *pdev)
  52 {
  53         snd_soc_unregister_codec(&pdev->dev);
  54         return 0;
  55 }
  56
  57 static struct platform_driver wm8782_codec_driver = {
  58         .driver = {
  59                 .name = "wm8782",
  60                 .owner = THIS_MODULE,
  61         },
  62         .probe = wm8782_probe,
  63         .remove = __devexit_p(wm8782_remove),
  64 };
  65
  66 static int __init wm8782_init(void)
  67 {
  68         return platform_driver_register(&wm8782_codec_driver);
  69 }
  70 module_init(wm8782_init);
  71
  72 static void __exit wm8782_exit(void)
  73 {
  74         platform_driver_unregister(&wm8782_codec_driver);
  75 }
  76 module_exit(wm8782_exit);
  77
  78 MODULE_DESCRIPTION("ASoC WM8782 driver");
  79 MODULE_AUTHOR("Johannes Stezenbach <js@sig21.net>");
  80 MODULE_LICENSE("GPL");