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