db1200.c

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/*
 * DB1200/DB1300/DB1550 ASoC audio fabric support code.
 *
 * (c) 2008-2011 Manuel Lauss <[email protected]>
 *
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <asm/mach-au1x00/au1000.h>
#include <asm/mach-au1x00/au1xxx_psc.h>
#include <asm/mach-au1x00/au1xxx_dbdma.h>
#include <asm/mach-db1x00/bcsr.h>

#include "../codecs/wm8731.h"
#include "psc.h"

static struct platform_device_id db1200_pids[] = {
    {
        .name       = "db1200-ac97",
        .driver_data    = 0,
    }, {
        .name       = "db1200-i2s",
        .driver_data    = 1,
    }, {
        .name       = "db1300-ac97",
        .driver_data    = 2,
    }, {
        .name       = "db1300-i2s",
        .driver_data    = 3,
    }, {
        .name       = "db1550-ac97",
        .driver_data    = 4,
    }, {
        .name       = "db1550-i2s",
        .driver_data    = 5,
    },
    {},
};

/*-------------------------  AC97 PART  ---------------------------*/

static struct snd_soc_dai_link db1200_ac97_dai = {
    .name       = "AC97",
    .stream_name    = "AC97 HiFi",
    .codec_dai_name = "ac97-hifi",
    .cpu_dai_name   = "au1xpsc_ac97.1",
    .platform_name  = "au1xpsc-pcm.1",
    .codec_name = "ac97-codec.1",
};

static struct snd_soc_card db1200_ac97_machine = {
    .name       = "DB1200_AC97",
    .owner      = THIS_MODULE,
    .dai_link   = &db1200_ac97_dai,
    .num_links  = 1,
};

static struct snd_soc_dai_link db1300_ac97_dai = {
    .name       = "AC97",
    .stream_name    = "AC97 HiFi",
    .codec_dai_name = "wm9712-hifi",
    .cpu_dai_name   = "au1xpsc_ac97.1",
    .platform_name  = "au1xpsc-pcm.1",
    .codec_name = "wm9712-codec.1",
};

static struct snd_soc_card db1300_ac97_machine = {
    .name       = "DB1300_AC97",
    .dai_link   = &db1300_ac97_dai,
    .num_links  = 1,
};

static struct snd_soc_card db1550_ac97_machine = {
    .name       = "DB1550_AC97",
    .dai_link   = &db1200_ac97_dai,
    .num_links  = 1,
};

/*-------------------------  I2S PART  ---------------------------*/

static int db1200_i2s_startup(struct snd_pcm_substream *substream)
{
    struct snd_soc_pcm_runtime *rtd = substream->private_data;
    struct snd_soc_dai *codec_dai = rtd->codec_dai;
    struct snd_soc_dai *cpu_dai = rtd->cpu_dai;
    int ret;

    /* WM8731 has its own 12MHz crystal */
    snd_soc_dai_set_sysclk(codec_dai, WM8731_SYSCLK_XTAL,
                12000000, SND_SOC_CLOCK_IN);

    /* codec is bitclock and lrclk master */
    ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_LEFT_J |
            SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
    if (ret < 0)
        goto out;

    ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_LEFT_J |
            SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
    if (ret < 0)
        goto out;

    ret = 0;
out:
    return ret;
}

static struct snd_soc_ops db1200_i2s_wm8731_ops = {
    .startup    = db1200_i2s_startup,
};

static struct snd_soc_dai_link db1200_i2s_dai = {
    .name       = "WM8731",
    .stream_name    = "WM8731 PCM",
    .codec_dai_name = "wm8731-hifi",
    .cpu_dai_name   = "au1xpsc_i2s.1",
    .platform_name  = "au1xpsc-pcm.1",
    .codec_name = "wm8731.0-001b",
    .ops        = &db1200_i2s_wm8731_ops,
};

static struct snd_soc_card db1200_i2s_machine = {
    .name       = "DB1200_I2S",
    .owner      = THIS_MODULE,
    .dai_link   = &db1200_i2s_dai,
    .num_links  = 1,
};

static struct snd_soc_dai_link db1300_i2s_dai = {
    .name       = "WM8731",
    .stream_name    = "WM8731 PCM",
    .codec_dai_name = "wm8731-hifi",
    .cpu_dai_name   = "au1xpsc_i2s.2",
    .platform_name  = "au1xpsc-pcm.2",
    .codec_name = "wm8731.0-001b",
    .ops        = &db1200_i2s_wm8731_ops,
};

static struct snd_soc_card db1300_i2s_machine = {
    .name       = "DB1300_I2S",
    .dai_link   = &db1300_i2s_dai,
    .num_links  = 1,
};

static struct snd_soc_dai_link db1550_i2s_dai = {
    .name       = "WM8731",
    .stream_name    = "WM8731 PCM",
    .codec_dai_name = "wm8731-hifi",
    .cpu_dai_name   = "au1xpsc_i2s.3",
    .platform_name  = "au1xpsc-pcm.3",
    .codec_name = "wm8731.0-001b",
    .ops        = &db1200_i2s_wm8731_ops,
};

static struct snd_soc_card db1550_i2s_machine = {
    .name       = "DB1550_I2S",
    .dai_link   = &db1550_i2s_dai,
    .num_links  = 1,
};

/*-------------------------  COMMON PART  ---------------------------*/

static struct snd_soc_card *db1200_cards[] __devinitdata = {
    &db1200_ac97_machine,
    &db1200_i2s_machine,
    &db1300_ac97_machine,
    &db1300_i2s_machine,
    &db1550_ac97_machine,
    &db1550_i2s_machine,
};

static int __devinit db1200_audio_probe(struct platform_device *pdev)
{
    const struct platform_device_id *pid = platform_get_device_id(pdev);
    struct snd_soc_card *card;

    card = db1200_cards[pid->driver_data];
    card->dev = &pdev->dev;
    return snd_soc_register_card(card);
}

static int __devexit db1200_audio_remove(struct platform_device *pdev)
{
    struct snd_soc_card *card = platform_get_drvdata(pdev);
    snd_soc_unregister_card(card);
    return 0;
}

static struct platform_driver db1200_audio_driver = {
    .driver = {
        .name   = "db1200-ac97",
        .owner  = THIS_MODULE,
        .pm = &snd_soc_pm_ops,
    },
    .id_table   = db1200_pids,
    .probe      = db1200_audio_probe,
    .remove     = __devexit_p(db1200_audio_remove),
};

module_platform_driver(db1200_audio_driver);

MODULE_LICENSE("GPL");
MODULE_DESCRIPTION("DB1200/DB1300/DB1550 ASoC audio support");
MODULE_AUTHOR("Manuel Lauss");