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palm27x.c

/*
 * 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 <marek.vasut@gmail.com>
 *
 * 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 <mach/palmasoc.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");

      err = snd_soc_dapm_sync(dapm);
      if (err)
            return err;

      /* 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 = "pxa-ac97.0",
      .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 = "pxa-ac97.1",
      .codec_dai_name = "wm9712-aux",
      .codec_name = "wm9712-codec",
      .platform_name = "pxa-pcm-audio",
},
};

static struct snd_soc_card palm27x_asoc = {
      .name = "Palm/PXA27x",
      .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,
      },
};

static int __init palm27x_asoc_init(void)
{
      return platform_driver_register(&palm27x_wm9712_driver);
}

static void __exit palm27x_asoc_exit(void)
{
      platform_driver_unregister(&palm27x_wm9712_driver);
}

module_init(palm27x_asoc_init);
module_exit(palm27x_asoc_exit);

/* Module information */
MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");
MODULE_DESCRIPTION("ALSA SoC Palm T|X, T5 and LifeDrive");
MODULE_LICENSE("GPL");

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