LXR linux/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 */
  23extern struct snd_soc_dai sh4_hac_dai[2];
  24extern struct snd_soc_platform sh7760_soc_platform;
  25
  26static int machine_init(struct snd_soc_codec *codec)
  27{
  28        snd_soc_dapm_sync(codec);
  29        return 0;
  30}
  31
  32static 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
  41static 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
  48static struct snd_soc_device sh7760_ac97_snd_devdata = {
  49        .card = &sh7760_ac97_soc_machine,
  50        .codec_dev = &soc_codec_dev_ac97,
  51};
  52
  53static struct platform_device *sh7760_ac97_snd_device;
  54
  55static 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
  77out:
  78        return ret;
  79}
  80
  81static void __exit sh7760_ac97_exit(void)
  82{
  83        platform_device_unregister(sh7760_ac97_snd_device);
  84}
  85
  86module_init(sh7760_ac97_init);
  87module_exit(sh7760_ac97_exit);
  88
  89MODULE_LICENSE("GPL");
  90MODULE_DESCRIPTION("Generic SH7760 AC97 sound machine");
  91MODULE_AUTHOR("Manuel Lauss <mano@roarinelk.homelinux.net>");
  92