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Linux/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                 .owner = THIS_MODULE,
 76         },
 77         .probe = wm8782_probe,
 78         .remove = wm8782_remove,
 79 };
 80 
 81 module_platform_driver(wm8782_codec_driver);
 82 
 83 MODULE_DESCRIPTION("ASoC WM8782 driver");
 84 MODULE_AUTHOR("Johannes Stezenbach <js@sig21.net>");
 85 MODULE_LICENSE("GPL");
 86 

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