kernel/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 const struct snd_soc_dapm_widget wm8782_dapm_widgets[] = {
  30 SND_SOC_DAPM_INPUT("AINL"),
  31 SND_SOC_DAPM_INPUT("AINR"),
  32 };
  33
  34 static const struct snd_soc_dapm_route wm8782_dapm_routes[] = {
  35         { "Capture", NULL, "AINL" },
  36         { "Capture", NULL, "AINR" },
  37 };
  38
  39 static struct snd_soc_dai_driver wm8782_dai = {
  40         .name = "wm8782",
  41         .capture = {
  42                 .stream_name = "Capture",
  43                 .channels_min = 2,
  44                 .channels_max = 2,
  45                 /* For configurations with FSAMPEN=0 */
  46                 .rates = SNDRV_PCM_RATE_8000_48000,
  47                 .formats = SNDRV_PCM_FMTBIT_S16_LE |
  48                            SNDRV_PCM_FMTBIT_S20_3LE |
  49                            SNDRV_PCM_FMTBIT_S24_LE,
  50         },
  51 };
  52
  53 static struct snd_soc_codec_driver soc_codec_dev_wm8782 = {
  54         .dapm_widgets = wm8782_dapm_widgets,
  55         .num_dapm_widgets = ARRAY_SIZE(wm8782_dapm_widgets),
  56         .dapm_routes = wm8782_dapm_routes,
  57         .num_dapm_routes = ARRAY_SIZE(wm8782_dapm_routes),
  58 };
  59
  60 static int wm8782_probe(struct platform_device *pdev)
  61 {
  62         return snd_soc_register_codec(&pdev->dev,
  63                         &soc_codec_dev_wm8782, &wm8782_dai, 1);
  64 }
  65
  66 static int wm8782_remove(struct platform_device *pdev)
  67 {
  68         snd_soc_unregister_codec(&pdev->dev);
  69         return 0;
  70 }
  71
  72 static struct platform_driver wm8782_codec_driver = {
  73         .driver = {
  74                 .name = "wm8782",
  75         },
  76         .probe = wm8782_probe,
  77         .remove = wm8782_remove,
  78 };
  79
  80 module_platform_driver(wm8782_codec_driver);
  81
  82 MODULE_DESCRIPTION("ASoC WM8782 driver");
  83 MODULE_AUTHOR("Johannes Stezenbach <js@sig21.net>");
  84 MODULE_LICENSE("GPL");