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