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 <sound/soc-dapm.h>
  21 #include <asm/mach-types.h>
  22
  23 static struct snd_soc_card imx_phycore;
  24
  25 static struct snd_soc_ops imx_phycore_hifi_ops = {
  26 };
  27
  28 static struct snd_soc_dai_link imx_phycore_dai_ac97[] = {
  29         {
  30                 .name           = "HiFi",
  31                 .stream_name    = "HiFi",
  32                 .codec_dai_name         = "wm9712-hifi",
  33                 .codec_name     = "wm9712-codec",
  34                 .cpu_dai_name   = "imx-ssi.0",
  35                 .platform_name  = "imx-fiq-pcm-audio.0",
  36                 .ops            = &imx_phycore_hifi_ops,
  37         },
  38 };
  39
  40 static struct snd_soc_card imx_phycore = {
  41         .name           = "PhyCORE-ac97-audio",
  42         .dai_link       = imx_phycore_dai_ac97,
  43         .num_links      = ARRAY_SIZE(imx_phycore_dai_ac97),
  44 };
  45
  46 static struct platform_device *imx_phycore_snd_ac97_device;
  47 static struct platform_device *imx_phycore_snd_device;
  48
  49 static int __init imx_phycore_init(void)
  50 {
  51         int ret;
  52
  53         if (!machine_is_pcm043() && !machine_is_pca100())
  54                 /* return happy. We might run on a totally different machine */
  55                 return 0;
  56
  57         imx_phycore_snd_ac97_device = platform_device_alloc("soc-audio", -1);
  58         if (!imx_phycore_snd_ac97_device)
  59                 return -ENOMEM;
  60
  61         platform_set_drvdata(imx_phycore_snd_ac97_device, &imx_phycore);
  62         ret = platform_device_add(imx_phycore_snd_ac97_device);
  63         if (ret)
  64                 goto fail1;
  65
  66         imx_phycore_snd_device = platform_device_alloc("wm9712-codec", -1);
  67         if (!imx_phycore_snd_device) {
  68                 ret = -ENOMEM;
  69                 goto fail2;
  70         }
  71         ret = platform_device_add(imx_phycore_snd_device);
  72
  73         if (ret) {
  74                 printk(KERN_ERR "ASoC: Platform device allocation failed\n");
  75                 goto fail3;
  76         }
  77
  78         return 0;
  79
  80 fail3:
  81         platform_device_put(imx_phycore_snd_device);
  82 fail2:
  83         platform_device_del(imx_phycore_snd_ac97_device);
  84 fail1:
  85         platform_device_put(imx_phycore_snd_ac97_device);
  86         return ret;
  87 }
  88
  89 static void __exit imx_phycore_exit(void)
  90 {
  91         platform_device_unregister(imx_phycore_snd_device);
  92         platform_device_unregister(imx_phycore_snd_ac97_device);
  93 }
  94
  95 late_initcall(imx_phycore_init);
  96 module_exit(imx_phycore_exit);
  97
  98 MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
  99 MODULE_DESCRIPTION("PhyCORE ALSA SoC driver");
 100 MODULE_LICENSE("GPL");