goni_wm8994.c

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/*
 * goni_wm8994.c
 *
 * Copyright (C) 2010 Samsung Electronics Co.Ltd
 * Author: Chanwoo Choi <[email protected]>
 *
 *  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.
 *
 */

#include <linux/module.h>
#include <sound/soc.h>
#include <sound/jack.h>

#include <asm/mach-types.h>
#include <mach/gpio.h>

#include "../codecs/wm8994.h"

#define MACHINE_NAME    0
#define CPU_VOICE_DAI   1

static const char *aquila_str[] = {
    [MACHINE_NAME] = "aquila",
    [CPU_VOICE_DAI] = "aquila-voice-dai",
};

static struct snd_soc_card goni;
static struct platform_device *goni_snd_device;

/* 3.5 pie jack */
static struct snd_soc_jack jack;

/* 3.5 pie jack detection DAPM pins */
static struct snd_soc_jack_pin jack_pins[] = {
    {
        .pin = "Headset Mic",
        .mask = SND_JACK_MICROPHONE,
    }, {
        .pin = "Headset Stereophone",
        .mask = SND_JACK_HEADPHONE | SND_JACK_MECHANICAL |
            SND_JACK_AVOUT,
    },
};

/* 3.5 pie jack detection gpios */
static struct snd_soc_jack_gpio jack_gpios[] = {
    {
        .gpio = S5PV210_GPH0(6),
        .name = "DET_3.5",
        .report = SND_JACK_HEADSET | SND_JACK_MECHANICAL |
            SND_JACK_AVOUT,
        .debounce_time = 200,
    },
};

static const struct snd_soc_dapm_widget goni_dapm_widgets[] = {
    SND_SOC_DAPM_SPK("Ext Left Spk", NULL),
    SND_SOC_DAPM_SPK("Ext Right Spk", NULL),
    SND_SOC_DAPM_SPK("Ext Rcv", NULL),
    SND_SOC_DAPM_HP("Headset Stereophone", NULL),
    SND_SOC_DAPM_MIC("Headset Mic", NULL),
    SND_SOC_DAPM_MIC("Main Mic", NULL),
    SND_SOC_DAPM_MIC("2nd Mic", NULL),
    SND_SOC_DAPM_LINE("Radio In", NULL),
};

static const struct snd_soc_dapm_route goni_dapm_routes[] = {
    {"Ext Left Spk", NULL, "SPKOUTLP"},
    {"Ext Left Spk", NULL, "SPKOUTLN"},

    {"Ext Right Spk", NULL, "SPKOUTRP"},
    {"Ext Right Spk", NULL, "SPKOUTRN"},

    {"Ext Rcv", NULL, "HPOUT2N"},
    {"Ext Rcv", NULL, "HPOUT2P"},

    {"Headset Stereophone", NULL, "HPOUT1L"},
    {"Headset Stereophone", NULL, "HPOUT1R"},

    {"IN1RN", NULL, "Headset Mic"},
    {"IN1RP", NULL, "Headset Mic"},

    {"IN1RN", NULL, "2nd Mic"},
    {"IN1RP", NULL, "2nd Mic"},

    {"IN1LN", NULL, "Main Mic"},
    {"IN1LP", NULL, "Main Mic"},

    {"IN2LN", NULL, "Radio In"},
    {"IN2RN", NULL, "Radio In"},
};

static int goni_wm8994_init(struct snd_soc_pcm_runtime *rtd)
{
    struct snd_soc_codec *codec = rtd->codec;
    struct snd_soc_dapm_context *dapm = &codec->dapm;
    int ret;

    /* set endpoints to not connected */
    snd_soc_dapm_nc_pin(dapm, "IN2LP:VXRN");
    snd_soc_dapm_nc_pin(dapm, "IN2RP:VXRP");
    snd_soc_dapm_nc_pin(dapm, "LINEOUT1N");
    snd_soc_dapm_nc_pin(dapm, "LINEOUT1P");
    snd_soc_dapm_nc_pin(dapm, "LINEOUT2N");
    snd_soc_dapm_nc_pin(dapm, "LINEOUT2P");

    if (machine_is_aquila()) {
        snd_soc_dapm_nc_pin(dapm, "SPKOUTRN");
        snd_soc_dapm_nc_pin(dapm, "SPKOUTRP");
    }

    /* Headset jack detection */
    ret = snd_soc_jack_new(codec, "Headset Jack",
            SND_JACK_HEADSET | SND_JACK_MECHANICAL | SND_JACK_AVOUT,
            &jack);
    if (ret)
        return ret;

    ret = snd_soc_jack_add_pins(&jack, ARRAY_SIZE(jack_pins), jack_pins);
    if (ret)
        return ret;

    ret = snd_soc_jack_add_gpios(&jack, ARRAY_SIZE(jack_gpios), jack_gpios);
    if (ret)
        return ret;

    return 0;
}

static int goni_hifi_hw_params(struct snd_pcm_substream *substream,
        struct snd_pcm_hw_params *params)
{
    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;
    unsigned int pll_out = 24000000;
    int ret = 0;

    /* set the cpu DAI configuration */
    ret = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
            SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
    if (ret < 0)
        return ret;

    /* set codec DAI configuration */
    ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
            SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBM_CFM);
    if (ret < 0)
        return ret;

    /* set the codec FLL */
    ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL1, 0, pll_out,
            params_rate(params) * 256);
    if (ret < 0)
        return ret;

    /* set the codec system clock */
    ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL1,
            params_rate(params) * 256, SND_SOC_CLOCK_IN);
    if (ret < 0)
        return ret;

    return 0;
}

static struct snd_soc_ops goni_hifi_ops = {
    .hw_params = goni_hifi_hw_params,
};

static int goni_voice_hw_params(struct snd_pcm_substream *substream,
        struct snd_pcm_hw_params *params)
{
    struct snd_soc_pcm_runtime *rtd = substream->private_data;
    struct snd_soc_dai *codec_dai = rtd->codec_dai;
    unsigned int pll_out = 24000000;
    int ret = 0;

    if (params_rate(params) != 8000)
        return -EINVAL;

    /* set codec DAI configuration */
    ret = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_LEFT_J |
            SND_SOC_DAIFMT_IB_IF | SND_SOC_DAIFMT_CBM_CFM);
    if (ret < 0)
        return ret;

    /* set the codec FLL */
    ret = snd_soc_dai_set_pll(codec_dai, WM8994_FLL2, 0, pll_out,
            params_rate(params) * 256);
    if (ret < 0)
        return ret;

    /* set the codec system clock */
    ret = snd_soc_dai_set_sysclk(codec_dai, WM8994_SYSCLK_FLL2,
            params_rate(params) * 256, SND_SOC_CLOCK_IN);
    if (ret < 0)
        return ret;

    return 0;
}

static struct snd_soc_dai_driver voice_dai = {
    .name = "goni-voice-dai",
    .id = 0,
    .playback = {
        .channels_min = 1,
        .channels_max = 2,
        .rates = SNDRV_PCM_RATE_8000,
        .formats = SNDRV_PCM_FMTBIT_S16_LE,},
    .capture = {
        .channels_min = 1,
        .channels_max = 2,
        .rates = SNDRV_PCM_RATE_8000,
        .formats = SNDRV_PCM_FMTBIT_S16_LE,},
};

static struct snd_soc_ops goni_voice_ops = {
    .hw_params = goni_voice_hw_params,
};

static struct snd_soc_dai_link goni_dai[] = {
{
    .name = "WM8994",
    .stream_name = "WM8994 HiFi",
    .cpu_dai_name = "samsung-i2s.0",
    .codec_dai_name = "wm8994-aif1",
    .platform_name = "samsung-audio",
    .codec_name = "wm8994-codec.0-001a",
    .init = goni_wm8994_init,
    .ops = &goni_hifi_ops,
}, {
    .name = "WM8994 Voice",
    .stream_name = "Voice",
    .cpu_dai_name = "goni-voice-dai",
    .codec_dai_name = "wm8994-aif2",
    .codec_name = "wm8994-codec.0-001a",
    .ops = &goni_voice_ops,
},
};

static struct snd_soc_card goni = {
    .name = "goni",
    .owner = THIS_MODULE,
    .dai_link = goni_dai,
    .num_links = ARRAY_SIZE(goni_dai),

    .dapm_widgets = goni_dapm_widgets,
    .num_dapm_widgets = ARRAY_SIZE(goni_dapm_widgets),
    .dapm_routes = goni_dapm_routes,
    .num_dapm_routes = ARRAY_SIZE(goni_dapm_routes),
};

static int __init goni_init(void)
{
    int ret;

    if (machine_is_aquila()) {
        voice_dai.name = aquila_str[CPU_VOICE_DAI];
        goni_dai[1].cpu_dai_name = aquila_str[CPU_VOICE_DAI];
        goni.name = aquila_str[MACHINE_NAME];
    } else if (!machine_is_goni())
        return -ENODEV;

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

    /* register voice DAI here */
    ret = snd_soc_register_dai(&goni_snd_device->dev, &voice_dai);
    if (ret) {
        platform_device_put(goni_snd_device);
        return ret;
    }

    platform_set_drvdata(goni_snd_device, &goni);
    ret = platform_device_add(goni_snd_device);

    if (ret) {
        snd_soc_unregister_dai(&goni_snd_device->dev);
        platform_device_put(goni_snd_device);
    }

    return ret;
}

static void __exit goni_exit(void)
{
    snd_soc_unregister_dai(&goni_snd_device->dev);
    platform_device_unregister(goni_snd_device);
}

module_init(goni_init);
module_exit(goni_exit);

/* Module information */
MODULE_DESCRIPTION("ALSA SoC WM8994 GONI(S5PV210)");
MODULE_AUTHOR("Chanwoo Choi <[email protected]>");
MODULE_LICENSE("GPL");