sound/soc/au1x/db1200.c

   1 /*
   2  * DB1200 ASoC audio fabric support code.
   3  *
   4  * (c) 2008-2011 Manuel Lauss <manuel.lauss@googlemail.com>
   5  *
   6  */
   7
   8 #include <linux/module.h>
   9 #include <linux/moduleparam.h>
  10 #include <linux/timer.h>
  11 #include <linux/interrupt.h>
  12 #include <linux/platform_device.h>
  13 #include <sound/core.h>
  14 #include <sound/pcm.h>
  15 #include <sound/soc.h>
  16 #include <asm/mach-au1x00/au1000.h>
  17 #include <asm/mach-au1x00/au1xxx_psc.h>
  18 #include <asm/mach-au1x00/au1xxx_dbdma.h>
  19 #include <asm/mach-db1x00/bcsr.h>
  20
  21 #include "../codecs/wm8731.h"
  22 #include "psc.h"
  23
  24 static struct platform_device_id db1200_pids[] = {
  25         {
  26                 .name           = "db1200-ac97",
  27                 .driver_data    = 0,
  28         }, {
  29                 .name           = "db1200-i2s",
  30                 .driver_data    = 1,
  31         },
  32         {},
  33 };
  34
  35 /*-------------------------  AC97 PART  ---------------------------*/
  36
  37 static struct snd_soc_dai_link db1200_ac97_dai = {
  38         .name           = "AC97",
  39         .stream_name    = "AC97 HiFi",
  40         .codec_dai_name = "ac97-hifi",
  41         .cpu_dai_name   = "au1xpsc_ac97.1",
  42         .platform_name  = "au1xpsc-pcm.1",
  43         .codec_name     = "ac97-codec.1",
  44 };
  45
  46 static struct snd_soc_card db1200_ac97_machine = {
  47         .name           = "DB1200_AC97",
  48         .owner          = THIS_MODULE,
  49         .dai_link       = &db1200_ac97_dai,
  50         .num_links      = 1,
  51 };
  52
  53 /*-------------------------  I2S PART  ---------------------------*/
  54
  55 static int db1200_i2s_startup(struct snd_pcm_substream *substream)
  56 {
  57         struct snd_soc_pcm_runtime *rtd = substream->private_data;
  58         struct snd_soc_dai *codec_dai = rtd->codec_dai;
  59         struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  60         int ret;
  61
  62         /* WM8731 has its own 12MHz crystal */
  63         snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL,
  64                                 12000000, SND_SOC_CLOCK_IN);
  65
  66         /* codec is bitclock and lrclk master */
  67         ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_LEFT_J |
  68                         SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
  69         if (ret < 0)
  70                 goto out;
  71
  72         ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_LEFT_J |
  73                         SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
  74         if (ret < 0)
  75                 goto out;
  76
  77         ret = 0;
  78 out:
  79         return ret;
  80 }
  81
  82 static struct snd_soc_ops db1200_i2s_wm8731_ops = {
  83         .startup        = db1200_i2s_startup,
  84 };
  85
  86 static struct snd_soc_dai_link db1200_i2s_dai = {
  87         .name           = "WM8731",
  88         .stream_name    = "WM8731 PCM",
  89         .codec_dai_name = "wm8731-hifi",
  90         .cpu_dai_name   = "au1xpsc_i2s.1",
  91         .platform_name  = "au1xpsc-pcm.1",
  92         .codec_name     = "wm8731.0-001b",
  93         .ops            = &db1200_i2s_wm8731_ops,
  94 };
  95
  96 static struct snd_soc_card db1200_i2s_machine = {
  97         .name           = "DB1200_I2S",
  98         .owner          = THIS_MODULE,
  99         .dai_link       = &db1200_i2s_dai,
 100         .num_links      = 1,
 101 };
 102
 103 /*-------------------------  COMMON PART  ---------------------------*/
 104
 105 static struct snd_soc_card *db1200_cards[] __devinitdata = {
 106         &db1200_ac97_machine,
 107         &db1200_i2s_machine,
 108 };
 109
 110 static int __devinit db1200_audio_probe(struct platform_device *pdev)
 111 {
 112         const struct platform_device_id *pid = platform_get_device_id(pdev);
 113         struct snd_soc_card *card;
 114
 115         card = db1200_cards[pid->driver_data];
 116         card->dev = &pdev->dev;
 117         return snd_soc_register_card(card);
 118 }
 119
 120 static int __devexit db1200_audio_remove(struct platform_device *pdev)
 121 {
 122         struct snd_soc_card *card = platform_get_drvdata(pdev);
 123         snd_soc_unregister_card(card);
 124         return 0;
 125 }
 126
 127 static struct platform_driver db1200_audio_driver = {
 128         .driver = {
 129                 .name   = "db1200-ac97",
 130                 .owner  = THIS_MODULE,
 131                 .pm     = &snd_soc_pm_ops,
 132         },
 133         .id_table       = db1200_pids,
 134         .probe          = db1200_audio_probe,
 135         .remove         = __devexit_p(db1200_audio_remove),
 136 };
 137
 138 module_platform_driver(db1200_audio_driver);
 139
 140 MODULE_LICENSE("GPL");
 141 MODULE_DESCRIPTION("DB1200 ASoC audio support");
 142 MODULE_AUTHOR("Manuel Lauss");