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 SND_SOC_DAILINK_DEFS(ac97,
  18         DAILINK_COMP_ARRAY(COMP_CPU("hac-dai.0")),      /* HAC0 */
  19         DAILINK_COMP_ARRAY(COMP_CODEC("ac97-codec", "ac97-hifi")),
  20         DAILINK_COMP_ARRAY(COMP_PLATFORM("sh7760-pcm-audio")));
  21
  22 static struct snd_soc_dai_link sh7760_ac97_dai = {
  23         .name = "AC97",
  24         .stream_name = "AC97 HiFi",
  25         SND_SOC_DAILINK_REG(ac97),
  26 };
  27
  28 static struct snd_soc_card sh7760_ac97_soc_machine  = {
  29         .name = "SH7760 AC97",
  30         .owner = THIS_MODULE,
  31         .dai_link = &sh7760_ac97_dai,
  32         .num_links = 1,
  33 };
  34
  35 static struct platform_device *sh7760_ac97_snd_device;
  36
  37 static int __init sh7760_ac97_init(void)
  38 {
  39         int ret;
  40         unsigned short ipsel;
  41
  42         /* enable both AC97 controllers in pinmux reg */
  43         ipsel = __raw_readw(IPSEL);
  44         __raw_writew(ipsel | (3 << 10), IPSEL);
  45
  46         ret = -ENOMEM;
  47         sh7760_ac97_snd_device = platform_device_alloc("soc-audio", -1);
  48         if (!sh7760_ac97_snd_device)
  49                 goto out;
  50
  51         platform_set_drvdata(sh7760_ac97_snd_device,
  52                              &sh7760_ac97_soc_machine);
  53         ret = platform_device_add(sh7760_ac97_snd_device);
  54
  55         if (ret)
  56                 platform_device_put(sh7760_ac97_snd_device);
  57
  58 out:
  59         return ret;
  60 }
  61
  62 static void __exit sh7760_ac97_exit(void)
  63 {
  64         platform_device_unregister(sh7760_ac97_snd_device);
  65 }
  66
  67 module_init(sh7760_ac97_init);
  68 module_exit(sh7760_ac97_exit);
  69
  70 MODULE_LICENSE("GPL v2");
  71 MODULE_DESCRIPTION("Generic SH7760 AC97 sound machine");
  72 MODULE_AUTHOR("Manuel Lauss <mano@roarinelk.homelinux.net>");