sound/soc/imx/phycore-ac97.c

   1 /*
   2  * phycore-ac97.c  --  SoC audio for imx_phycore in AC97 mode
   3  *
   4  * Copyright 2009 Sascha Hauer, Pengutronix <s.hauer@pengutronix.de>
   5  *
   6  *  This program is free software; you can redistribute  it and/or modify it
   7  *  under  the terms of  the GNU General  Public License as published by the
   8  *  Free Software Foundation;  either version 2 of the  License, or (at your
   9  *  option) any later version.
  10  *
  11  */
  12
  13 #include <linux/module.h>
  14 #include <linux/moduleparam.h>
  15 #include <linux/device.h>
  16 #include <linux/i2c.h>
  17 #include <sound/core.h>
  18 #include <sound/pcm.h>
  19 #include <sound/soc.h>
  20 #include <asm/mach-types.h>
  21
  22 static struct snd_soc_card imx_phycore;
  23
  24 static struct snd_soc_ops imx_phycore_hifi_ops = {
  25 };
  26
  27 static struct snd_soc_dai_link imx_phycore_dai_ac97[] = {
  28         {
  29                 .name           = "HiFi",
  30                 .stream_name    = "HiFi",
  31                 .codec_dai_name         = "wm9712-hifi",
  32                 .codec_name     = "wm9712-codec",
  33                 .cpu_dai_name   = "imx-ssi.0",
  34                 .platform_name  = "imx-fiq-pcm-audio.0",
  35                 .ops            = &imx_phycore_hifi_ops,
  36         },
  37 };
  38
  39 static struct snd_soc_card imx_phycore = {
  40         .name           = "PhyCORE-ac97-audio",
  41         .dai_link       = imx_phycore_dai_ac97,
  42         .num_links      = ARRAY_SIZE(imx_phycore_dai_ac97),
  43 };
  44
  45 static struct platform_device *imx_phycore_snd_ac97_device;
  46 static struct platform_device *imx_phycore_snd_device;
  47
  48 static int __init imx_phycore_init(void)
  49 {
  50         int ret;
  51
  52         if (!machine_is_pcm043() && !machine_is_pca100())
  53                 /* return happy. We might run on a totally different machine */
  54                 return 0;
  55
  56         imx_phycore_snd_ac97_device = platform_device_alloc("soc-audio", -1);
  57         if (!imx_phycore_snd_ac97_device)
  58                 return -ENOMEM;
  59
  60         platform_set_drvdata(imx_phycore_snd_ac97_device, &imx_phycore);
  61         ret = platform_device_add(imx_phycore_snd_ac97_device);
  62         if (ret)
  63                 goto fail1;
  64
  65         imx_phycore_snd_device = platform_device_alloc("wm9712-codec", -1);
  66         if (!imx_phycore_snd_device) {
  67                 ret = -ENOMEM;
  68                 goto fail2;
  69         }
  70         ret = platform_device_add(imx_phycore_snd_device);
  71
  72         if (ret) {
  73                 printk(KERN_ERR "ASoC: Platform device allocation failed\n");
  74                 goto fail3;
  75         }
  76
  77         return 0;
  78
  79 fail3:
  80         platform_device_put(imx_phycore_snd_device);
  81 fail2:
  82         platform_device_del(imx_phycore_snd_ac97_device);
  83 fail1:
  84         platform_device_put(imx_phycore_snd_ac97_device);
  85         return ret;
  86 }
  87
  88 static void __exit imx_phycore_exit(void)
  89 {
  90         platform_device_unregister(imx_phycore_snd_device);
  91         platform_device_unregister(imx_phycore_snd_ac97_device);
  92 }
  93
  94 late_initcall(imx_phycore_init);
  95 module_exit(imx_phycore_exit);
  96
  97 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
  98 MODULE_DESCRIPTION("PhyCORE ALSA SoC driver");
  99 MODULE_LICENSE("GPL");