ttc-dkb.c

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/*
 * linux/sound/soc/pxa/ttc_dkb.c
 *
 * Copyright (C) 2012 Marvell International Ltd.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/jack.h>
#include <asm/mach-types.h>
#include <sound/pcm_params.h>
#include "../codecs/88pm860x-codec.h"

static struct snd_soc_jack hs_jack, mic_jack;

static struct snd_soc_jack_pin hs_jack_pins[] = {
    { .pin = "Headset Stereophone", .mask = SND_JACK_HEADPHONE, },
};

static struct snd_soc_jack_pin mic_jack_pins[] = {
    { .pin = "Headset Mic 2",   .mask = SND_JACK_MICROPHONE, },
};

/* ttc machine dapm widgets */
static const struct snd_soc_dapm_widget ttc_dapm_widgets[] = {
    SND_SOC_DAPM_HP("Headset Stereophone", NULL),
    SND_SOC_DAPM_LINE("Lineout Out 1", NULL),
    SND_SOC_DAPM_LINE("Lineout Out 2", NULL),
    SND_SOC_DAPM_SPK("Ext Speaker", NULL),
    SND_SOC_DAPM_MIC("Ext Mic 1", NULL),
    SND_SOC_DAPM_MIC("Headset Mic 2", NULL),
    SND_SOC_DAPM_MIC("Ext Mic 3", NULL),
};

/* ttc machine audio map */
static const struct snd_soc_dapm_route ttc_audio_map[] = {
    {"Headset Stereophone", NULL, "HS1"},
    {"Headset Stereophone", NULL, "HS2"},

    {"Ext Speaker", NULL, "LSP"},
    {"Ext Speaker", NULL, "LSN"},

    {"Lineout Out 1", NULL, "LINEOUT1"},
    {"Lineout Out 2", NULL, "LINEOUT2"},

    {"MIC1P", NULL, "Mic1 Bias"},
    {"MIC1N", NULL, "Mic1 Bias"},
    {"Mic1 Bias", NULL, "Ext Mic 1"},

    {"MIC2P", NULL, "Mic1 Bias"},
    {"MIC2N", NULL, "Mic1 Bias"},
    {"Mic1 Bias", NULL, "Headset Mic 2"},

    {"MIC3P", NULL, "Mic3 Bias"},
    {"MIC3N", NULL, "Mic3 Bias"},
    {"Mic3 Bias", NULL, "Ext Mic 3"},
};

static int ttc_pm860x_init(struct snd_soc_pcm_runtime *rtd)
{
    struct snd_soc_codec *codec = rtd->codec;
    struct snd_soc_dapm_context *dapm = &codec->dapm;

    /* connected pins */
    snd_soc_dapm_enable_pin(dapm, "Ext Speaker");
    snd_soc_dapm_enable_pin(dapm, "Ext Mic 1");
    snd_soc_dapm_enable_pin(dapm, "Ext Mic 3");
    snd_soc_dapm_disable_pin(dapm, "Headset Mic 2");
    snd_soc_dapm_disable_pin(dapm, "Headset Stereophone");

    /* Headset jack detection */
    snd_soc_jack_new(codec, "Headphone Jack", SND_JACK_HEADPHONE
            | SND_JACK_BTN_0 | SND_JACK_BTN_1 | SND_JACK_BTN_2,
            &hs_jack);
    snd_soc_jack_add_pins(&hs_jack, ARRAY_SIZE(hs_jack_pins),
                  hs_jack_pins);
    snd_soc_jack_new(codec, "Microphone Jack", SND_JACK_MICROPHONE,
             &mic_jack);
    snd_soc_jack_add_pins(&mic_jack, ARRAY_SIZE(mic_jack_pins),
                  mic_jack_pins);

    /* headphone, microphone detection & headset short detection */
    pm860x_hs_jack_detect(codec, &hs_jack, SND_JACK_HEADPHONE,
                  SND_JACK_BTN_0, SND_JACK_BTN_1, SND_JACK_BTN_2);
    pm860x_mic_jack_detect(codec, &hs_jack, SND_JACK_MICROPHONE);

    return 0;
}

/* ttc/td-dkb digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link ttc_pm860x_hifi_dai[] = {
{
     .name = "88pm860x i2s",
     .stream_name = "audio playback",
     .codec_name = "88pm860x-codec",
     .platform_name = "mmp-pcm-audio",
     .cpu_dai_name = "pxa-ssp-dai.1",
     .codec_dai_name = "88pm860x-i2s",
     .dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
            SND_SOC_DAIFMT_CBM_CFM,
     .init = ttc_pm860x_init,
},
};

/* ttc/td audio machine driver */
static struct snd_soc_card ttc_dkb_card = {
    .name = "ttc-dkb-hifi",
    .dai_link = ttc_pm860x_hifi_dai,
    .num_links = ARRAY_SIZE(ttc_pm860x_hifi_dai),

    .dapm_widgets = ttc_dapm_widgets,
    .num_dapm_widgets = ARRAY_SIZE(ttc_dapm_widgets),
    .dapm_routes = ttc_audio_map,
    .num_dapm_routes = ARRAY_SIZE(ttc_audio_map),
};

static int __devinit ttc_dkb_probe(struct platform_device *pdev)
{
    struct snd_soc_card *card = &ttc_dkb_card;
    int ret;

    card->dev = &pdev->dev;

    ret = snd_soc_register_card(card);
    if (ret)
        dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
            ret);

    return ret;
}

static int __devexit ttc_dkb_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 ttc_dkb_driver = {
    .driver     = {
        .name   = "ttc-dkb-audio",
        .owner  = THIS_MODULE,
    },
    .probe      = ttc_dkb_probe,
    .remove     = __devexit_p(ttc_dkb_remove),
};

module_platform_driver(ttc_dkb_driver);

/* Module information */
MODULE_AUTHOR("Qiao Zhou, <[email protected]>");
MODULE_DESCRIPTION("ALSA SoC TTC DKB");
MODULE_LICENSE("GPL");
MODULE_ALIAS("platform:ttc-dkb-audio");