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kernel/linux-imx6_3.14.28/sound/soc/pxa/ttc-dkb.c 5 KB
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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",
  	.owner = THIS_MODULE,
  	.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 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
  ",
  			ret);
  
  	return ret;
  }
  
  static int 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,
  		.pm     = &snd_soc_pm_ops,
  	},
  	.probe		= ttc_dkb_probe,
  	.remove		= ttc_dkb_remove,
  };
  
  module_platform_driver(ttc_dkb_driver);
  
  /* Module information */
  MODULE_AUTHOR("Qiao Zhou, <zhouqiao@marvell.com>");
  MODULE_DESCRIPTION("ALSA SoC TTC DKB");
  MODULE_LICENSE("GPL");
  MODULE_ALIAS("platform:ttc-dkb-audio");