rx51.c

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/*
 * rx51.c  --  SoC audio for Nokia RX-51
 *
 * Copyright (C) 2008 - 2009 Nokia Corporation
 *
 * Contact: Peter Ujfalusi <[email protected]>
 *          Eduardo Valentin <[email protected]>
 *          Jarkko Nikula <[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.
 *
 * 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., 51 Franklin St, Fifth Floor, Boston, MA
 * 02110-1301 USA
 *
 */

#include <linux/delay.h>
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <linux/module.h>
#include <sound/core.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <linux/platform_data/asoc-ti-mcbsp.h>
#include "../codecs/tpa6130a2.h"

#include <asm/mach-types.h>

#include "omap-mcbsp.h"
#include "omap-pcm.h"

#define RX51_TVOUT_SEL_GPIO     40
#define RX51_JACK_DETECT_GPIO       177
#define RX51_ECI_SW_GPIO        182
/*
 * REVISIT: TWL4030 GPIO base in RX-51. Now statically defined to 192. This
 * gpio is reserved in arch/arm/mach-omap2/board-rx51-peripherals.c
 */
#define RX51_SPEAKER_AMP_TWL_GPIO   (192 + 7)

enum {
    RX51_JACK_DISABLED,
    RX51_JACK_TVOUT,        /* tv-out with stereo output */
    RX51_JACK_HP,           /* headphone: stereo output, no mic */
    RX51_JACK_HS,           /* headset: stereo output with mic */
};

static int rx51_spk_func;
static int rx51_dmic_func;
static int rx51_jack_func;

static void rx51_ext_control(struct snd_soc_dapm_context *dapm)
{
    int hp = 0, hs = 0, tvout = 0;

    switch (rx51_jack_func) {
    case RX51_JACK_TVOUT:
        tvout = 1;
        hp = 1;
        break;
    case RX51_JACK_HS:
        hs = 1;
    case RX51_JACK_HP:
        hp = 1;
        break;
    }

    if (rx51_spk_func)
        snd_soc_dapm_enable_pin(dapm, "Ext Spk");
    else
        snd_soc_dapm_disable_pin(dapm, "Ext Spk");
    if (rx51_dmic_func)
        snd_soc_dapm_enable_pin(dapm, "DMic");
    else
        snd_soc_dapm_disable_pin(dapm, "DMic");
    if (hp)
        snd_soc_dapm_enable_pin(dapm, "Headphone Jack");
    else
        snd_soc_dapm_disable_pin(dapm, "Headphone Jack");
    if (hs)
        snd_soc_dapm_enable_pin(dapm, "HS Mic");
    else
        snd_soc_dapm_disable_pin(dapm, "HS Mic");

    gpio_set_value(RX51_TVOUT_SEL_GPIO, tvout);

    snd_soc_dapm_sync(dapm);
}

static int rx51_startup(struct snd_pcm_substream *substream)
{
    struct snd_pcm_runtime *runtime = substream->runtime;
    struct snd_soc_pcm_runtime *rtd = substream->private_data;
    struct snd_soc_card *card = rtd->card;

    snd_pcm_hw_constraint_minmax(runtime,
                     SNDRV_PCM_HW_PARAM_CHANNELS, 2, 2);
    rx51_ext_control(&card->dapm);

    return 0;
}

static int rx51_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;

    /* Set the codec system clock for DAC and ADC */
    return snd_soc_dai_set_sysclk(codec_dai, 0, 19200000,
                      SND_SOC_CLOCK_IN);
}

static struct snd_soc_ops rx51_ops = {
    .startup = rx51_startup,
    .hw_params = rx51_hw_params,
};

static int rx51_get_spk(struct snd_kcontrol *kcontrol,
            struct snd_ctl_elem_value *ucontrol)
{
    ucontrol->value.integer.value[0] = rx51_spk_func;

    return 0;
}

static int rx51_set_spk(struct snd_kcontrol *kcontrol,
            struct snd_ctl_elem_value *ucontrol)
{
    struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);

    if (rx51_spk_func == ucontrol->value.integer.value[0])
        return 0;

    rx51_spk_func = ucontrol->value.integer.value[0];
    rx51_ext_control(&card->dapm);

    return 1;
}

static int rx51_spk_event(struct snd_soc_dapm_widget *w,
              struct snd_kcontrol *k, int event)
{
    if (SND_SOC_DAPM_EVENT_ON(event))
        gpio_set_value_cansleep(RX51_SPEAKER_AMP_TWL_GPIO, 1);
    else
        gpio_set_value_cansleep(RX51_SPEAKER_AMP_TWL_GPIO, 0);

    return 0;
}

static int rx51_hp_event(struct snd_soc_dapm_widget *w,
             struct snd_kcontrol *k, int event)
{
    struct snd_soc_codec *codec = w->dapm->codec;

    if (SND_SOC_DAPM_EVENT_ON(event))
        tpa6130a2_stereo_enable(codec, 1);
    else
        tpa6130a2_stereo_enable(codec, 0);

    return 0;
}

static int rx51_get_input(struct snd_kcontrol *kcontrol,
              struct snd_ctl_elem_value *ucontrol)
{
    ucontrol->value.integer.value[0] = rx51_dmic_func;

    return 0;
}

static int rx51_set_input(struct snd_kcontrol *kcontrol,
              struct snd_ctl_elem_value *ucontrol)
{
    struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);

    if (rx51_dmic_func == ucontrol->value.integer.value[0])
        return 0;

    rx51_dmic_func = ucontrol->value.integer.value[0];
    rx51_ext_control(&card->dapm);

    return 1;
}

static int rx51_get_jack(struct snd_kcontrol *kcontrol,
             struct snd_ctl_elem_value *ucontrol)
{
    ucontrol->value.integer.value[0] = rx51_jack_func;

    return 0;
}

static int rx51_set_jack(struct snd_kcontrol *kcontrol,
             struct snd_ctl_elem_value *ucontrol)
{
    struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);

    if (rx51_jack_func == ucontrol->value.integer.value[0])
        return 0;

    rx51_jack_func = ucontrol->value.integer.value[0];
    rx51_ext_control(&card->dapm);

    return 1;
}

static struct snd_soc_jack rx51_av_jack;

static struct snd_soc_jack_gpio rx51_av_jack_gpios[] = {
    {
        .gpio = RX51_JACK_DETECT_GPIO,
        .name = "avdet-gpio",
        .report = SND_JACK_HEADSET,
        .invert = 1,
        .debounce_time = 200,
    },
};

static const struct snd_soc_dapm_widget aic34_dapm_widgets[] = {
    SND_SOC_DAPM_SPK("Ext Spk", rx51_spk_event),
    SND_SOC_DAPM_MIC("DMic", NULL),
    SND_SOC_DAPM_HP("Headphone Jack", rx51_hp_event),
    SND_SOC_DAPM_MIC("HS Mic", NULL),
    SND_SOC_DAPM_LINE("FM Transmitter", NULL),
};

static const struct snd_soc_dapm_widget aic34_dapm_widgetsb[] = {
    SND_SOC_DAPM_SPK("Earphone", NULL),
};

static const struct snd_soc_dapm_route audio_map[] = {
    {"Ext Spk", NULL, "HPLOUT"},
    {"Ext Spk", NULL, "HPROUT"},
    {"Headphone Jack", NULL, "LLOUT"},
    {"Headphone Jack", NULL, "RLOUT"},
    {"FM Transmitter", NULL, "LLOUT"},
    {"FM Transmitter", NULL, "RLOUT"},

    {"DMic Rate 64", NULL, "Mic Bias 2V"},
    {"Mic Bias 2V", NULL, "DMic"},
};

static const struct snd_soc_dapm_route audio_mapb[] = {
    {"b LINE2R", NULL, "MONO_LOUT"},
    {"Earphone", NULL, "b HPLOUT"},

    {"LINE1L", NULL, "b Mic Bias 2.5V"},
    {"b Mic Bias 2.5V", NULL, "HS Mic"}
};

static const char *spk_function[] = {"Off", "On"};
static const char *input_function[] = {"ADC", "Digital Mic"};
static const char *jack_function[] = {"Off", "TV-OUT", "Headphone", "Headset"};

static const struct soc_enum rx51_enum[] = {
    SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
    SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
    SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
};

static const struct snd_kcontrol_new aic34_rx51_controls[] = {
    SOC_ENUM_EXT("Speaker Function", rx51_enum[0],
             rx51_get_spk, rx51_set_spk),
    SOC_ENUM_EXT("Input Select",  rx51_enum[1],
             rx51_get_input, rx51_set_input),
    SOC_ENUM_EXT("Jack Function", rx51_enum[2],
             rx51_get_jack, rx51_set_jack),
    SOC_DAPM_PIN_SWITCH("FM Transmitter"),
};

static const struct snd_kcontrol_new aic34_rx51_controlsb[] = {
    SOC_DAPM_PIN_SWITCH("Earphone"),
};

static int rx51_aic34_init(struct snd_soc_pcm_runtime *rtd)
{
    struct snd_soc_codec *codec = rtd->codec;
    struct snd_soc_dapm_context *dapm = &codec->dapm;
    int err;

    /* Set up NC codec pins */
    snd_soc_dapm_nc_pin(dapm, "MIC3L");
    snd_soc_dapm_nc_pin(dapm, "MIC3R");
    snd_soc_dapm_nc_pin(dapm, "LINE1R");

    /* Add RX-51 specific controls */
    err = snd_soc_add_card_controls(rtd->card, aic34_rx51_controls,
                   ARRAY_SIZE(aic34_rx51_controls));
    if (err < 0)
        return err;

    /* Add RX-51 specific widgets */
    snd_soc_dapm_new_controls(dapm, aic34_dapm_widgets,
                  ARRAY_SIZE(aic34_dapm_widgets));

    /* Set up RX-51 specific audio path audio_map */
    snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));

    err = tpa6130a2_add_controls(codec);
    if (err < 0)
        return err;
    snd_soc_limit_volume(codec, "TPA6130A2 Headphone Playback Volume", 42);

    err = omap_mcbsp_st_add_controls(rtd);
    if (err < 0)
        return err;

    /* AV jack detection */
    err = snd_soc_jack_new(codec, "AV Jack",
                   SND_JACK_HEADSET | SND_JACK_VIDEOOUT,
                   &rx51_av_jack);
    if (err)
        return err;
    err = snd_soc_jack_add_gpios(&rx51_av_jack,
                     ARRAY_SIZE(rx51_av_jack_gpios),
                     rx51_av_jack_gpios);

    return err;
}

static int rx51_aic34b_init(struct snd_soc_dapm_context *dapm)
{
    int err;

    err = snd_soc_add_card_controls(dapm->card, aic34_rx51_controlsb,
                   ARRAY_SIZE(aic34_rx51_controlsb));
    if (err < 0)
        return err;

    err = snd_soc_dapm_new_controls(dapm, aic34_dapm_widgetsb,
                    ARRAY_SIZE(aic34_dapm_widgetsb));
    if (err < 0)
        return 0;

    return snd_soc_dapm_add_routes(dapm, audio_mapb,
                       ARRAY_SIZE(audio_mapb));
}

/* Digital audio interface glue - connects codec <--> CPU */
static struct snd_soc_dai_link rx51_dai[] = {
    {
        .name = "TLV320AIC34",
        .stream_name = "AIC34",
        .cpu_dai_name = "omap-mcbsp.2",
        .codec_dai_name = "tlv320aic3x-hifi",
        .platform_name = "omap-pcm-audio",
        .codec_name = "tlv320aic3x-codec.2-0018",
        .dai_fmt = SND_SOC_DAIFMT_DSP_A | SND_SOC_DAIFMT_IB_NF |
               SND_SOC_DAIFMT_CBM_CFM,
        .init = rx51_aic34_init,
        .ops = &rx51_ops,
    },
};

static struct snd_soc_aux_dev rx51_aux_dev[] = {
    {
        .name = "TLV320AIC34b",
        .codec_name = "tlv320aic3x-codec.2-0019",
        .init = rx51_aic34b_init,
    },
};

static struct snd_soc_codec_conf rx51_codec_conf[] = {
    {
        .dev_name = "tlv320aic3x-codec.2-0019",
        .name_prefix = "b",
    },
};

/* Audio card */
static struct snd_soc_card rx51_sound_card = {
    .name = "RX-51",
    .owner = THIS_MODULE,
    .dai_link = rx51_dai,
    .num_links = ARRAY_SIZE(rx51_dai),
    .aux_dev = rx51_aux_dev,
    .num_aux_devs = ARRAY_SIZE(rx51_aux_dev),
    .codec_conf = rx51_codec_conf,
    .num_configs = ARRAY_SIZE(rx51_codec_conf),
};

static struct platform_device *rx51_snd_device;

static int __init rx51_soc_init(void)
{
    int err;

    if (!machine_is_nokia_rx51())
        return -ENODEV;

    err = gpio_request_one(RX51_TVOUT_SEL_GPIO,
                   GPIOF_DIR_OUT | GPIOF_INIT_LOW, "tvout_sel");
    if (err)
        goto err_gpio_tvout_sel;
    err = gpio_request_one(RX51_ECI_SW_GPIO,
                   GPIOF_DIR_OUT | GPIOF_INIT_HIGH, "eci_sw");
    if (err)
        goto err_gpio_eci_sw;

    rx51_snd_device = platform_device_alloc("soc-audio", -1);
    if (!rx51_snd_device) {
        err = -ENOMEM;
        goto err1;
    }

    platform_set_drvdata(rx51_snd_device, &rx51_sound_card);

    err = platform_device_add(rx51_snd_device);
    if (err)
        goto err2;

    return 0;
err2:
    platform_device_put(rx51_snd_device);
err1:
    gpio_free(RX51_ECI_SW_GPIO);
err_gpio_eci_sw:
    gpio_free(RX51_TVOUT_SEL_GPIO);
err_gpio_tvout_sel:

    return err;
}

static void __exit rx51_soc_exit(void)
{
    snd_soc_jack_free_gpios(&rx51_av_jack, ARRAY_SIZE(rx51_av_jack_gpios),
                rx51_av_jack_gpios);

    platform_device_unregister(rx51_snd_device);
    gpio_free(RX51_ECI_SW_GPIO);
    gpio_free(RX51_TVOUT_SEL_GPIO);
}

module_init(rx51_soc_init);
module_exit(rx51_soc_exit);

MODULE_AUTHOR("Nokia Corporation");
MODULE_DESCRIPTION("ALSA SoC Nokia RX-51");
MODULE_LICENSE("GPL");