LXR linux/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
  22static struct snd_soc_card imx_phycore;
  23
  24static struct snd_soc_ops imx_phycore_hifi_ops = {
  25};
  26
  27static 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
  39static 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
  45static struct platform_device *imx_phycore_snd_ac97_device;
  46static struct platform_device *imx_phycore_snd_device;
  47
  48static 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
  79fail3:
  80        platform_device_put(imx_phycore_snd_device);
  81fail2:
  82        platform_device_del(imx_phycore_snd_ac97_device);
  83fail1:
  84        platform_device_put(imx_phycore_snd_ac97_device);
  85        return ret;
  86}
  87
  88static 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
  94late_initcall(imx_phycore_init);
  95module_exit(imx_phycore_exit);
  96
  97MODULE_AUTHOR("Sascha Hauer <s.hauer@pengutronix.de>");
  98MODULE_DESCRIPTION("PhyCORE ALSA SoC driver");
  99MODULE_LICENSE("GPL");
 100