sound/soc/pxa/e800_wm9712.c

   1 /*
   2  * e800-wm9712.c  --  SoC audio for e800
   3  *
   4  * Based on tosa.c
   5  *
   6  * Copyright 2007 (c) Ian Molton <spyro@f2s.com>
   7  *
   8  *  This program is free software; you can redistribute  it and/or modify it
   9  *  under  the terms of  the GNU General  Public License as published by the
  10  *  Free Software Foundation; version 2 ONLY.
  11  *
  12  */
  13
  14 #include <linux/module.h>
  15 #include <linux/moduleparam.h>
  16 #include <linux/device.h>
  17
  18 #include <sound/core.h>
  19 #include <sound/pcm.h>
  20 #include <sound/soc.h>
  21 #include <sound/soc-dapm.h>
  22
  23 #include <asm/mach-types.h>
  24 #include <mach/pxa-regs.h>
  25 #include <mach/hardware.h>
  26 #include <mach/audio.h>
  27
  28 #include "../codecs/wm9712.h"
  29 #include "pxa2xx-pcm.h"
  30 #include "pxa2xx-ac97.h"
  31
  32 static struct snd_soc_machine e800;
  33
  34 static struct snd_soc_dai_link e800_dai[] = {
  35 {
  36         .name = "AC97 Aux",
  37         .stream_name = "AC97 Aux",
  38         .cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
  39         .codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
  40 },
  41 };
  42
  43 static struct snd_soc_machine e800 = {
  44         .name = "Toshiba e800",
  45         .dai_link = e800_dai,
  46         .num_links = ARRAY_SIZE(e800_dai),
  47 };
  48
  49 static struct snd_soc_device e800_snd_devdata = {
  50         .machine = &e800,
  51         .platform = &pxa2xx_soc_platform,
  52         .codec_dev = &soc_codec_dev_wm9712,
  53 };
  54
  55 static struct platform_device *e800_snd_device;
  56
  57 static int __init e800_init(void)
  58 {
  59         int ret;
  60
  61         if (!machine_is_e800())
  62                 return -ENODEV;
  63
  64         e800_snd_device = platform_device_alloc("soc-audio", -1);
  65         if (!e800_snd_device)
  66                 return -ENOMEM;
  67
  68         platform_set_drvdata(e800_snd_device, &e800_snd_devdata);
  69         e800_snd_devdata.dev = &e800_snd_device->dev;
  70         ret = platform_device_add(e800_snd_device);
  71
  72         if (ret)
  73                 platform_device_put(e800_snd_device);
  74
  75         return ret;
  76 }
  77
  78 static void __exit e800_exit(void)
  79 {
  80         platform_device_unregister(e800_snd_device);
  81 }
  82
  83 module_init(e800_init);
  84 module_exit(e800_exit);
  85
  86 /* Module information */
  87 MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
  88 MODULE_DESCRIPTION("ALSA SoC driver for e800");
  89 MODULE_LICENSE("GPL");