palm27x.c

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/*
 * linux/sound/soc/pxa/palm27x.c
 *
 * SoC Audio driver for Palm T|X, T5 and LifeDrive
 *
 * based on tosa.c
 *
 * Copyright (C) 2008 Marek Vasut <[email protected]>
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License version 2 as
 * published by the Free Software Foundation.
 *
 */

#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/device.h>
#include <linux/gpio.h>

#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/jack.h>

#include <asm/mach-types.h>
#include <mach/audio.h>
#include <linux/platform_data/asoc-palm27x.h>

#include "../codecs/wm9712.h"
#include "pxa2xx-ac97.h"

static struct snd_soc_jack hs_jack;

/* Headphones jack detection DAPM pins */
static struct snd_soc_jack_pin hs_jack_pins[] = {
    {
        .pin    = "Headphone Jack",
        .mask   = SND_JACK_HEADPHONE,
    },
};

/* Headphones jack detection gpios */
static struct snd_soc_jack_gpio hs_jack_gpios[] = {
    [0] = {
        /* gpio is set on per-platform basis */
        .name           = "hp-gpio",
        .report         = SND_JACK_HEADPHONE,
        .debounce_time  = 200,
    },
};

/* Palm27x machine dapm widgets */
static const struct snd_soc_dapm_widget palm27x_dapm_widgets[] = {
    SND_SOC_DAPM_HP("Headphone Jack", NULL),
    SND_SOC_DAPM_SPK("Ext. Speaker", NULL),
    SND_SOC_DAPM_MIC("Ext. Microphone", NULL),
};

/* PalmTX audio map */
static const struct snd_soc_dapm_route audio_map[] = {
    /* headphone connected to HPOUTL, HPOUTR */
    {"Headphone Jack", NULL, "HPOUTL"},
    {"Headphone Jack", NULL, "HPOUTR"},

    /* ext speaker connected to ROUT2, LOUT2 */
    {"Ext. Speaker", NULL, "LOUT2"},
    {"Ext. Speaker", NULL, "ROUT2"},

    /* mic connected to MIC1 */
    {"Ext. Microphone", NULL, "MIC1"},
};

static struct snd_soc_card palm27x_asoc;

static int palm27x_ac97_init(struct snd_soc_pcm_runtime *rtd)
{
    struct snd_soc_codec *codec = rtd->codec;
    struct snd_soc_dapm_context *dapm = &codec->dapm;
    int err;

    /* add palm27x specific widgets */
    err = snd_soc_dapm_new_controls(dapm, palm27x_dapm_widgets,
                ARRAY_SIZE(palm27x_dapm_widgets));
    if (err)
        return err;

    /* set up palm27x specific audio path audio_map */
    err = snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
    if (err)
        return err;

    /* connected pins */
    if (machine_is_palmld())
        snd_soc_dapm_enable_pin(dapm, "MIC1");
    snd_soc_dapm_enable_pin(dapm, "HPOUTL");
    snd_soc_dapm_enable_pin(dapm, "HPOUTR");
    snd_soc_dapm_enable_pin(dapm, "LOUT2");
    snd_soc_dapm_enable_pin(dapm, "ROUT2");

    /* not connected pins */
    snd_soc_dapm_nc_pin(dapm, "OUT3");
    snd_soc_dapm_nc_pin(dapm, "MONOOUT");
    snd_soc_dapm_nc_pin(dapm, "LINEINL");
    snd_soc_dapm_nc_pin(dapm, "LINEINR");
    snd_soc_dapm_nc_pin(dapm, "PCBEEP");
    snd_soc_dapm_nc_pin(dapm, "PHONE");
    snd_soc_dapm_nc_pin(dapm, "MIC2");

    /* Jack detection API stuff */
    err = snd_soc_jack_new(codec, "Headphone Jack",
                SND_JACK_HEADPHONE, &hs_jack);
    if (err)
        return err;

    err = snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
                hs_jack_pins);
    if (err)
        return err;

    err = snd_soc_jack_add_gpios(&hs_jack, ARRAY_SIZE(hs_jack_gpios),
                hs_jack_gpios);

    return err;
}

static struct snd_soc_dai_link palm27x_dai[] = {
{
    .name = "AC97 HiFi",
    .stream_name = "AC97 HiFi",
    .cpu_dai_name = "pxa2xx-ac97",
    .codec_dai_name =  "wm9712-hifi",
    .codec_name = "wm9712-codec",
    .platform_name = "pxa-pcm-audio",
    .init = palm27x_ac97_init,
},
{
    .name = "AC97 Aux",
    .stream_name = "AC97 Aux",
    .cpu_dai_name = "pxa2xx-ac97-aux",
    .codec_dai_name = "wm9712-aux",
    .codec_name = "wm9712-codec",
    .platform_name = "pxa-pcm-audio",
},
};

static struct snd_soc_card palm27x_asoc = {
    .name = "Palm/PXA27x",
    .owner = THIS_MODULE,
    .dai_link = palm27x_dai,
    .num_links = ARRAY_SIZE(palm27x_dai),
};

static struct platform_device *palm27x_snd_device;

static int palm27x_asoc_probe(struct platform_device *pdev)
{
    int ret;

    if (!(machine_is_palmtx() || machine_is_palmt5() ||
        machine_is_palmld() || machine_is_palmte2()))
        return -ENODEV;

    if (!pdev->dev.platform_data) {
        dev_err(&pdev->dev, "please supply platform_data\n");
        return -ENODEV;
    }

    hs_jack_gpios[0].gpio = ((struct palm27x_asoc_info *)
            (pdev->dev.platform_data))->jack_gpio;

    palm27x_snd_device = platform_device_alloc("soc-audio", -1);
    if (!palm27x_snd_device)
        return -ENOMEM;

    platform_set_drvdata(palm27x_snd_device, &palm27x_asoc);
    ret = platform_device_add(palm27x_snd_device);

    if (ret != 0)
        goto put_device;

    return 0;

put_device:
    platform_device_put(palm27x_snd_device);

    return ret;
}

static int __devexit palm27x_asoc_remove(struct platform_device *pdev)
{
    platform_device_unregister(palm27x_snd_device);
    return 0;
}

static struct platform_driver palm27x_wm9712_driver = {
    .probe      = palm27x_asoc_probe,
    .remove     = __devexit_p(palm27x_asoc_remove),
    .driver     = {
        .name       = "palm27x-asoc",
        .owner      = THIS_MODULE,
    },
};

module_platform_driver(palm27x_wm9712_driver);

/* Module information */
MODULE_AUTHOR("Marek Vasut <[email protected]>");
MODULE_DESCRIPTION("ALSA SoC Palm T|X, T5 and LifeDrive");
MODULE_LICENSE("GPL");