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