linux/sound/soc/au1x/db1200.c
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   1/*
   2 * DB1200/DB1300/DB1550 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
  24static 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                .name           = "db1300-ac97",
  33                .driver_data    = 2,
  34        }, {
  35                .name           = "db1300-i2s",
  36                .driver_data    = 3,
  37        }, {
  38                .name           = "db1550-ac97",
  39                .driver_data    = 4,
  40        }, {
  41                .name           = "db1550-i2s",
  42                .driver_data    = 5,
  43        },
  44        {},
  45};
  46
  47/*-------------------------  AC97 PART  ---------------------------*/
  48
  49static struct snd_soc_dai_link db1200_ac97_dai = {
  50        .name           = "AC97",
  51        .stream_name    = "AC97 HiFi",
  52        .codec_dai_name = "ac97-hifi",
  53        .cpu_dai_name   = "au1xpsc_ac97.1",
  54        .platform_name  = "au1xpsc-pcm.1",
  55        .codec_name     = "ac97-codec.1",
  56};
  57
  58static struct snd_soc_card db1200_ac97_machine = {
  59        .name           = "DB1200_AC97",
  60        .owner          = THIS_MODULE,
  61        .dai_link       = &db1200_ac97_dai,
  62        .num_links      = 1,
  63};
  64
  65static struct snd_soc_dai_link db1300_ac97_dai = {
  66        .name           = "AC97",
  67        .stream_name    = "AC97 HiFi",
  68        .codec_dai_name = "wm9712-hifi",
  69        .cpu_dai_name   = "au1xpsc_ac97.1",
  70        .platform_name  = "au1xpsc-pcm.1",
  71        .codec_name     = "wm9712-codec.1",
  72};
  73
  74static struct snd_soc_card db1300_ac97_machine = {
  75        .name           = "DB1300_AC97",
  76        .owner          = THIS_MODULE,
  77        .dai_link       = &db1300_ac97_dai,
  78        .num_links      = 1,
  79};
  80
  81static struct snd_soc_card db1550_ac97_machine = {
  82        .name           = "DB1550_AC97",
  83        .owner          = THIS_MODULE,
  84        .dai_link       = &db1200_ac97_dai,
  85        .num_links      = 1,
  86};
  87
  88/*-------------------------  I2S PART  ---------------------------*/
  89
  90static int db1200_i2s_startup(struct snd_pcm_substream *substream)
  91{
  92        struct snd_soc_pcm_runtime *rtd = substream->private_data;
  93        struct snd_soc_dai *codec_dai = rtd->codec_dai;
  94        struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
  95        int ret;
  96
  97        /* WM8731 has its own 12MHz crystal */
  98        snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL,
  99                                12000000, SND_SOC_CLOCK_IN);
 100
 101        /* codec is bitclock and lrclk master */
 102        ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_LEFT_J |
 103                        SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
 104        if (ret < 0)
 105                goto out;
 106
 107        ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_LEFT_J |
 108                        SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
 109        if (ret < 0)
 110                goto out;
 111
 112        ret = 0;
 113out:
 114        return ret;
 115}
 116
 117static struct snd_soc_ops db1200_i2s_wm8731_ops = {
 118        .startup        = db1200_i2s_startup,
 119};
 120
 121static struct snd_soc_dai_link db1200_i2s_dai = {
 122        .name           = "WM8731",
 123        .stream_name    = "WM8731 PCM",
 124        .codec_dai_name = "wm8731-hifi",
 125        .cpu_dai_name   = "au1xpsc_i2s.1",
 126        .platform_name  = "au1xpsc-pcm.1",
 127        .codec_name     = "wm8731.0-001b",
 128        .ops            = &db1200_i2s_wm8731_ops,
 129};
 130
 131static struct snd_soc_card db1200_i2s_machine = {
 132        .name           = "DB1200_I2S",
 133        .owner          = THIS_MODULE,
 134        .dai_link       = &db1200_i2s_dai,
 135        .num_links      = 1,
 136};
 137
 138static struct snd_soc_dai_link db1300_i2s_dai = {
 139        .name           = "WM8731",
 140        .stream_name    = "WM8731 PCM",
 141        .codec_dai_name = "wm8731-hifi",
 142        .cpu_dai_name   = "au1xpsc_i2s.2",
 143        .platform_name  = "au1xpsc-pcm.2",
 144        .codec_name     = "wm8731.0-001b",
 145        .ops            = &db1200_i2s_wm8731_ops,
 146};
 147
 148static struct snd_soc_card db1300_i2s_machine = {
 149        .name           = "DB1300_I2S",
 150        .owner          = THIS_MODULE,
 151        .dai_link       = &db1300_i2s_dai,
 152        .num_links      = 1,
 153};
 154
 155static struct snd_soc_dai_link db1550_i2s_dai = {
 156        .name           = "WM8731",
 157        .stream_name    = "WM8731 PCM",
 158        .codec_dai_name = "wm8731-hifi",
 159        .cpu_dai_name   = "au1xpsc_i2s.3",
 160        .platform_name  = "au1xpsc-pcm.3",
 161        .codec_name     = "wm8731.0-001b",
 162        .ops            = &db1200_i2s_wm8731_ops,
 163};
 164
 165static struct snd_soc_card db1550_i2s_machine = {
 166        .name           = "DB1550_I2S",
 167        .owner          = THIS_MODULE,
 168        .dai_link       = &db1550_i2s_dai,
 169        .num_links      = 1,
 170};
 171
 172/*-------------------------  COMMON PART  ---------------------------*/
 173
 174static struct snd_soc_card *db1200_cards[] = {
 175        &db1200_ac97_machine,
 176        &db1200_i2s_machine,
 177        &db1300_ac97_machine,
 178        &db1300_i2s_machine,
 179        &db1550_ac97_machine,
 180        &db1550_i2s_machine,
 181};
 182
 183static int db1200_audio_probe(struct platform_device *pdev)
 184{
 185        const struct platform_device_id *pid = platform_get_device_id(pdev);
 186        struct snd_soc_card *card;
 187
 188        card = db1200_cards[pid->driver_data];
 189        card->dev = &pdev->dev;
 190        return snd_soc_register_card(card);
 191}
 192
 193static int db1200_audio_remove(struct platform_device *pdev)
 194{
 195        struct snd_soc_card *card = platform_get_drvdata(pdev);
 196        snd_soc_unregister_card(card);
 197        return 0;
 198}
 199
 200static struct platform_driver db1200_audio_driver = {
 201        .driver = {
 202                .name   = "db1200-ac97",
 203                .owner  = THIS_MODULE,
 204                .pm     = &snd_soc_pm_ops,
 205        },
 206        .id_table       = db1200_pids,
 207        .probe          = db1200_audio_probe,
 208        .remove         = db1200_audio_remove,
 209};
 210
 211module_platform_driver(db1200_audio_driver);
 212
 213MODULE_LICENSE("GPL");
 214MODULE_DESCRIPTION("DB1200/DB1300/DB1550 ASoC audio support");
 215MODULE_AUTHOR("Manuel Lauss");
 216