sound/soc/sh/sh7760-ac97.c

   1 // SPDX-License-Identifier: GPL-2.0
   2 //
   3 // Generic AC97 sound support for SH7760
   4 //
   5 // (c) 2007 Manuel Lauss
   6
   7 #include <linux/module.h>
   8 #include <linux/moduleparam.h>
   9 #include <linux/platform_device.h>
  10 #include <sound/core.h>
  11 #include <sound/pcm.h>
  12 #include <sound/soc.h>
  13 #include <asm/io.h>
  14
  15 #define IPSEL 0xFE400034
  16
  17 static struct snd_soc_dai_link sh7760_ac97_dai = {
  18         .name = "AC97",
  19         .stream_name = "AC97 HiFi",
  20         .cpu_dai_name = "hac-dai.0",    /* HAC0 */
  21         .codec_dai_name = "ac97-hifi",
  22         .platform_name = "sh7760-pcm-audio",
  23         .codec_name = "ac97-codec",
  24         .ops = NULL,
  25 };
  26
  27 static struct snd_soc_card sh7760_ac97_soc_machine  = {
  28         .name = "SH7760 AC97",
  29         .owner = THIS_MODULE,
  30         .dai_link = &sh7760_ac97_dai,
  31         .num_links = 1,
  32 };
  33
  34 static struct platform_device *sh7760_ac97_snd_device;
  35
  36 static int __init sh7760_ac97_init(void)
  37 {
  38         int ret;
  39         unsigned short ipsel;
  40
  41         /* enable both AC97 controllers in pinmux reg */
  42         ipsel = __raw_readw(IPSEL);
  43         __raw_writew(ipsel | (3 << 10), IPSEL);
  44
  45         ret = -ENOMEM;
  46         sh7760_ac97_snd_device = platform_device_alloc("soc-audio", -1);
  47         if (!sh7760_ac97_snd_device)
  48                 goto out;
  49
  50         platform_set_drvdata(sh7760_ac97_snd_device,
  51                              &sh7760_ac97_soc_machine);
  52         ret = platform_device_add(sh7760_ac97_snd_device);
  53
  54         if (ret)
  55                 platform_device_put(sh7760_ac97_snd_device);
  56
  57 out:
  58         return ret;
  59 }
  60
  61 static void __exit sh7760_ac97_exit(void)
  62 {
  63         platform_device_unregister(sh7760_ac97_snd_device);
  64 }
  65
  66 module_init(sh7760_ac97_init);
  67 module_exit(sh7760_ac97_exit);
  68
  69 MODULE_LICENSE("GPL v2");
  70 MODULE_DESCRIPTION("Generic SH7760 AC97 sound machine");
  71 MODULE_AUTHOR("Manuel Lauss <mano@roarinelk.homelinux.net>");