release/src-rt-6.x.4708/linux/linux-2.6.36/sound/soc/s3c24xx/smdk_wm9713.c

   1 /*
   2  * smdk_wm9713.c  --  SoC audio for SMDK
   3  *
   4  * Copyright 2010 Samsung Electronics Co. Ltd.
   5  * Author: Jaswinder Singh Brar <jassi.brar@samsung.com>
   6  *
   7  * This program is free software; you can redistribute it and/or
   8  * modify it under the terms of the GNU General Public License as
   9  * published by the Free Software Foundation; either version 2 of the
  10  * License, or (at your option) any later version.
  11  *
  12  */
  13
  14 #include <linux/module.h>
  15 #include <linux/device.h>
  16 #include <sound/soc.h>
  17
  18 #include "../codecs/wm9713.h"
  19 #include "s3c-dma.h"
  20 #include "s3c-ac97.h"
  21
  22 static struct snd_soc_card smdk;
  23
  24 /*
  25  * Default CFG switch settings to use this driver:
  26  *
  27  *   SMDK6410: Set CFG1 1-3 On, CFG2 1-4 Off
  28  *   SMDKC100: Set CFG6 1-3 On, CFG7 1   On
  29  *   SMDKC110: Set CFGB10 1-2 Off, CFGB12 1-3 On
  30  *   SMDKV210: Set CFGB10 1-2 Off, CFGB12 1-3 On
  31  */
  32
  33 /*
  34  Playback (HeadPhone):-
  35         $ amixer sset 'Headphone' unmute
  36         $ amixer sset 'Right Headphone Out Mux' 'Headphone'
  37         $ amixer sset 'Left Headphone Out Mux' 'Headphone'
  38         $ amixer sset 'Right HP Mixer PCM' unmute
  39         $ amixer sset 'Left HP Mixer PCM' unmute
  40
  41  Capture (LineIn):-
  42         $ amixer sset 'Right Capture Source' 'Line'
  43         $ amixer sset 'Left Capture Source' 'Line'
  44 */
  45
  46 static struct snd_soc_dai_link smdk_dai = {
  47         .name = "AC97",
  48         .stream_name = "AC97 PCM",
  49         .cpu_dai = &s3c_ac97_dai[S3C_AC97_DAI_PCM],
  50         .codec_dai = &wm9713_dai[WM9713_DAI_AC97_HIFI],
  51 };
  52
  53 static struct snd_soc_card smdk = {
  54         .name = "SMDK",
  55         .platform = &s3c24xx_soc_platform,
  56         .dai_link = &smdk_dai,
  57         .num_links = 1,
  58 };
  59
  60 static struct snd_soc_device smdk_snd_ac97_devdata = {
  61         .card = &smdk,
  62         .codec_dev = &soc_codec_dev_wm9713,
  63 };
  64
  65 static struct platform_device *smdk_snd_ac97_device;
  66
  67 static int __init smdk_init(void)
  68 {
  69         int ret;
  70
  71         smdk_snd_ac97_device = platform_device_alloc("soc-audio", -1);
  72         if (!smdk_snd_ac97_device)
  73                 return -ENOMEM;
  74
  75         platform_set_drvdata(smdk_snd_ac97_device,
  76                              &smdk_snd_ac97_devdata);
  77         smdk_snd_ac97_devdata.dev = &smdk_snd_ac97_device->dev;
  78
  79         ret = platform_device_add(smdk_snd_ac97_device);
  80         if (ret)
  81                 platform_device_put(smdk_snd_ac97_device);
  82
  83         return ret;
  84 }
  85
  86 static void __exit smdk_exit(void)
  87 {
  88         platform_device_unregister(smdk_snd_ac97_device);
  89 }
  90
  91 module_init(smdk_init);
  92 module_exit(smdk_exit);
  93
  94 /* Module information */
  95 MODULE_AUTHOR("Jaswinder Singh Brar, jassi.brar@samsung.com");
  96 MODULE_DESCRIPTION("ALSA SoC SMDK+WM9713");
  97 MODULE_LICENSE("GPL");