sound/soc/sh/sh7760-ac97.c

   1 /*
   2  * Generic AC97 sound support for SH7760
   3  *
   4  * (c) 2007 Manuel Lauss
   5  *
   6  * Licensed under the GPLv2.
   7  */
   8
   9 #include <linux/module.h>
  10 #include <linux/moduleparam.h>
  11 #include <linux/platform_device.h>
  12 #include <sound/core.h>
  13 #include <sound/pcm.h>
  14 #include <sound/soc.h>
  15 #include <sound/soc-dapm.h>
  16 #include <asm/io.h>
  17
  18 #include "../codecs/ac97.h"
  19
  20 #define IPSEL 0xFE400034
  21
  22 /* platform specific structs can be declared here */
  23 extern struct snd_soc_dai sh4_hac_dai[2];
  24 extern struct snd_soc_platform sh7760_soc_platform;
  25
  26 static int machine_init(struct snd_soc_codec *codec)
  27 {
  28         snd_soc_dapm_sync(codec);
  29         return 0;
  30 }
  31
  32 static struct snd_soc_dai_link sh7760_ac97_dai = {
  33         .name = "AC97",
  34         .stream_name = "AC97 HiFi",
  35         .cpu_dai = &sh4_hac_dai[0],     /* HAC0 */
  36         .codec_dai = &ac97_dai,
  37         .init = machine_init,
  38         .ops = NULL,
  39 };
  40
  41 static struct snd_soc_card sh7760_ac97_soc_machine  = {
  42         .name = "SH7760 AC97",
  43         .platform = &sh7760_soc_platform,
  44         .dai_link = &sh7760_ac97_dai,
  45         .num_links = 1,
  46 };
  47
  48 static struct snd_soc_device sh7760_ac97_snd_devdata = {
  49         .card = &sh7760_ac97_soc_machine,
  50         .codec_dev = &soc_codec_dev_ac97,
  51 };
  52
  53 static struct platform_device *sh7760_ac97_snd_device;
  54
  55 static int __init sh7760_ac97_init(void)
  56 {
  57         int ret;
  58         unsigned short ipsel;
  59
  60         /* enable both AC97 controllers in pinmux reg */
  61         ipsel = ctrl_inw(IPSEL);
  62         ctrl_outw(ipsel | (3 << 10), IPSEL);
  63
  64         ret = -ENOMEM;
  65         sh7760_ac97_snd_device = platform_device_alloc("soc-audio", -1);
  66         if (!sh7760_ac97_snd_device)
  67                 goto out;
  68
  69         platform_set_drvdata(sh7760_ac97_snd_device,
  70                              &sh7760_ac97_snd_devdata);
  71         sh7760_ac97_snd_devdata.dev = &sh7760_ac97_snd_device->dev;
  72         ret = platform_device_add(sh7760_ac97_snd_device);
  73
  74         if (ret)
  75                 platform_device_put(sh7760_ac97_snd_device);
  76
  77 out:
  78         return ret;
  79 }
  80
  81 static void __exit sh7760_ac97_exit(void)
  82 {
  83         platform_device_unregister(sh7760_ac97_snd_device);
  84 }
  85
  86 module_init(sh7760_ac97_init);
  87 module_exit(sh7760_ac97_exit);
  88
  89 MODULE_LICENSE("GPL");
  90 MODULE_DESCRIPTION("Generic SH7760 AC97 sound machine");
  91 MODULE_AUTHOR("Manuel Lauss <mano@roarinelk.homelinux.net>");