sound/soc/ambarella/md800.c - nest-cam/v350/linux - Git at Google

 /*
  * sound/soc/md800.c
  *
  * Author: Cao Rongrong <rrcao@ambarella.com>
  *
  * History:
  *	2011/10/19 - [Cao Rongrong] Created file
  *
  * Copyright (C) 2004-2009, Ambarella, Inc.
  *
  * 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/kernel.h>
 #include <linux/module.h>
 #include <linux/init.h>
 #include <linux/io.h>
 #include <linux/platform_device.h>
 #include <linux/delay.h>

 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/pcm_params.h>
 #include <sound/initval.h>
 #include <sound/soc.h>
 #include <sound/jack.h>
 #include <sound/soc-dapm.h>

 #include <mach/hardware.h>
 #include <plat/audio.h>

 #include "ambarella_i2s.h"
 #include "../codecs/es8328.h"

 /* Headset jack detection DAPM pins */
 static struct snd_soc_jack hp_jack;

 static struct snd_soc_jack_pin hp_jack_pins[] = {
 	{
 		.pin = "Speaker",
 		.mask = SND_JACK_HEADPHONE,
 		.invert = 1,
 	},
 };

 static struct snd_soc_jack_gpio hp_jack_gpios[] = {
 	{
 		.gpio = GPIO(12),
 		.name = "hpdet-gpio",
 		.report = SND_JACK_HEADPHONE,
 		.debounce_time = 200,
 		.invert = 1,
 	},
 };

 #define MD800_SPK_ON    0
 #define MD800_SPK_OFF   1

 /* default: Speaker output */
 static int md800_spk_func = MD800_SPK_ON;
 static int md800_spk_gpio = GPIO(139);
 static int md800_spk_level = GPIO_HIGH;

 static struct notifier_block hp_event;

 /* headphone inserted, so we disable speaker. */
 static int md800_hp_event(struct notifier_block *nb, unsigned long val, void *data)
 {
 	if (val != 0)
 		md800_spk_func = MD800_SPK_OFF;
 	else
 		md800_spk_func = MD800_SPK_ON;

 	return NOTIFY_OK;
 }

 static void md800_ext_control(struct snd_soc_codec *codec)
 {
 	int errorCode = 0;
 	struct snd_soc_dapm_context *dapm = &codec->dapm;

 	if (md800_spk_func == MD800_SPK_ON){
 		errorCode = gpio_direction_output(md800_spk_gpio, !!md800_spk_level);
 		if (errorCode < 0) {
 			printk(KERN_ERR "Could not Set Spk-Ctrl GPIO high\n");
 			goto err_exit;
 		}
 		mdelay(1);
 		snd_soc_dapm_enable_pin(dapm, "Speaker");
 	} else {
 		errorCode = gpio_direction_output(md800_spk_gpio, !md800_spk_level);
 		if (errorCode < 0) {
 			printk(KERN_ERR "Could not Set Spk-Ctrl GPIO low\n");
 			goto err_exit;
 		}
 		mdelay(1);
 		snd_soc_dapm_disable_pin(dapm, "Speaker");
 	}

 	/* signal a DAPM event */
 	snd_soc_dapm_sync(dapm);

 err_exit:
 	return;
 }

 static int md800_startup(struct snd_pcm_substream *substream)
 {
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;
 	struct snd_soc_codec *codec = rtd->codec;

 	/* check the jack status at stream startup */
 	md800_ext_control(codec);
 	return 0;
 }

 static int md800_board_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;
 	int errorCode = 0, amb_mclk, mclk, oversample;

 	switch (params_rate(params)) {
 	case 8000:
 		amb_mclk = AudioCodec_2_048M;
 		mclk = 2048000;
 		oversample = AudioCodec_256xfs;
 		break;
 	case 11025:
 		amb_mclk = AudioCodec_2_8224M;
 		mclk = 2822400;
 		oversample = AudioCodec_256xfs;
 		break;
 	case 12000:
 		amb_mclk = AudioCodec_3_072M;
 		mclk = 3072000;
 		oversample = AudioCodec_256xfs;
 		break;
 	case 16000:
 		amb_mclk = AudioCodec_4_096M;
 		mclk = 4096000;
 		oversample = AudioCodec_256xfs;
 		break;
 	case 22050:
 		amb_mclk = AudioCodec_5_6448M;
 		mclk = 5644800;
 		oversample = AudioCodec_256xfs;
 		break;
 	case 24000:
 		amb_mclk = AudioCodec_6_144;
 		mclk = 6144000;
 		oversample = AudioCodec_256xfs;
 		break;
 	case 32000:
 		amb_mclk = AudioCodec_8_192M;
 		mclk = 8192000;
 		oversample = AudioCodec_256xfs;
 		break;
 	case 44100:
 		amb_mclk = AudioCodec_11_2896M;
 		mclk = 11289600;
 		oversample = AudioCodec_256xfs;
 		break;
 	case 48000:
 		amb_mclk = AudioCodec_12_288M;
 		mclk = 12288000;
 		oversample = AudioCodec_256xfs;
 		break;
 	default:
 		errorCode = -EINVAL;
 		goto hw_params_exit;
 	}

 	/* set the I2S system data format*/
 	errorCode = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 			SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 	if (errorCode < 0) {
 		pr_err("can't set codec DAI configuration\n");
 		goto hw_params_exit;
 	}

 	errorCode = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 			SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 	if (errorCode < 0) {
 		pr_err("can't set cpu DAI configuration\n");
 		goto hw_params_exit;
 	}

 	/* set the I2S system clock*/
 	errorCode = snd_soc_dai_set_sysclk(codec_dai, ES8328_SYSCLK, mclk, 0);
 	if (errorCode < 0) {
 		pr_err("can't set cpu MCLK configuration\n");
 		goto hw_params_exit;
 	}

 	errorCode = snd_soc_dai_set_sysclk(cpu_dai, AMBARELLA_CLKSRC_ONCHIP, amb_mclk, 0);
 	if (errorCode < 0) {
 		pr_err("can't set cpu MCLK configuration\n");
 		goto hw_params_exit;
 	}

 	errorCode = snd_soc_dai_set_clkdiv(cpu_dai, AMBARELLA_CLKDIV_LRCLK, oversample);
 	if (errorCode < 0) {
 		pr_err("can't set cpu MCLK/SF ratio\n");
 		goto hw_params_exit;
 	}

 hw_params_exit:
 	return errorCode;
 }


 static struct snd_soc_ops md800_board_ops = {
 	.startup = md800_startup,
 	.hw_params = md800_board_hw_params,
 };

 static int md800_get_spk(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 {
 	ucontrol->value.integer.value[0] = md800_spk_func;
 	return 0;
 }

 static int md800_set_spk(struct snd_kcontrol *kcontrol, struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);

 	if (md800_spk_func == ucontrol->value.integer.value[0])
 		return 0;

 	md800_spk_func = ucontrol->value.integer.value[0];
 	md800_ext_control(codec);
 	return 1;
 }

 static int md800_spk_event(struct snd_soc_dapm_widget *w,
 		struct snd_kcontrol *k, int event)
 {
 	int errorCode = 0;

 	if (SND_SOC_DAPM_EVENT_ON(event) && (md800_spk_func == MD800_SPK_ON)){
 		errorCode = gpio_direction_output(md800_spk_gpio, !!md800_spk_level);
 		if (errorCode < 0) {
 			printk(KERN_ERR "Could not Set Spk-Ctrl GPIO high\n");
 			goto err_exit;
 		}
 	} else {
 		errorCode = gpio_direction_output(md800_spk_gpio, !md800_spk_level);
 		if (errorCode < 0) {
 			printk(KERN_ERR "Could not Set Spk-Ctrl GPIO low\n");
 			goto err_exit;
 		}
 	}
 	mdelay(1);

 err_exit:
 	return errorCode;
 }


 /* md800 dapm widgets */
 static const struct snd_soc_dapm_widget md800_dapm_widgets[] = {
     SND_SOC_DAPM_MIC("Mic Jack", NULL),
     SND_SOC_DAPM_HP("Headphone Jack", NULL),
     SND_SOC_DAPM_SPK("Speaker", md800_spk_event),
 };

 /* md800 audio map (connections to the codec pins) */
 static const struct snd_soc_dapm_route md800_audio_map[] = {
 	/* mic is connected to MICIN (via right channel of headphone jack) */
 	{"MICIN", NULL, "Mic Jack"},

 	/* headphone connected to LHPOUT1, RHPOUT1 */
 	{"Headphone Jack", NULL, "LOUT1"},
 	{"Headphone Jack", NULL, "ROUT1"},

 	/* speaker connected to LOUT, ROUT */
 	{"Speaker", NULL, "ROUT1"},
 	{"Speaker", NULL, "LOUT1"},
 };

 static const char *spk_function[]  = {"On", "Off"};

 static const struct soc_enum md800_enum[] = {
 	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
 };

 static const struct snd_kcontrol_new es8328_md800_controls[] = {
 	SOC_ENUM_EXT("Speaker Function", md800_enum[0], md800_get_spk , md800_set_spk),
 };

 static int md800_es8328_init(struct snd_soc_pcm_runtime *rtd)
 {
 	int errorCode = 0;
 	struct snd_soc_codec *codec = rtd->codec;
 	struct snd_soc_dapm_context *dapm = &codec->dapm;

 	/* not connected */
 	snd_soc_dapm_nc_pin(dapm, "LINPUT1");
 	snd_soc_dapm_nc_pin(dapm, "RINPUT1");
 	snd_soc_dapm_nc_pin(dapm, "LOUT2");
 	snd_soc_dapm_nc_pin(dapm, "ROUT2");

 	snd_soc_dapm_enable_pin(dapm, "MICIN");

 	/* Add md800 specific controls */
 	snd_soc_add_controls(codec, es8328_md800_controls,
 			ARRAY_SIZE(es8328_md800_controls));

 	/* Add md800 specific widgets */
 	snd_soc_dapm_new_controls(dapm,
 			md800_dapm_widgets,
 			ARRAY_SIZE(md800_dapm_widgets));

 	/* Setup md800 specific audio path md800_audio_map */
 	snd_soc_dapm_add_routes(dapm,
 			md800_audio_map,
 			ARRAY_SIZE(md800_audio_map));

 	snd_soc_dapm_sync(dapm);

 	ambarella_i2s_add_controls(codec);

 	/* Headset jack detection */
 	errorCode = snd_soc_jack_new(codec, "Headset Jack",
 				SND_JACK_HEADSET, &hp_jack);
 	if (errorCode)
 		return errorCode;

 	errorCode = snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
 				hp_jack_pins);
 	if (errorCode)
 		return errorCode;

 	errorCode = snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
 				hp_jack_gpios);

 	hp_event.notifier_call = md800_hp_event;
 	snd_soc_jack_notifier_register(&hp_jack, &hp_event);

 	return errorCode;
 }


 /* md800 digital audio interface glue - connects codec <--> A2S */
 static struct snd_soc_dai_link md800_dai_link = {
 	.name = "ES8328",
 	.stream_name = "ES8328-STREAM",
 	.cpu_dai_name = "ambarella-i2s.0",
 	.platform_name = "ambarella-pcm-audio",
 	.codec_dai_name = "ES8328",
 	.codec_name = "es8328-codec.0-0010",
 	.init = md800_es8328_init,
 	.ops = &md800_board_ops,
 };


 /* md800 audio machine driver */
 static struct snd_soc_card snd_soc_card_md800 = {
 	.name = "MD800",
 	.dai_link = &md800_dai_link,
 	.num_links = 1,
 };

 static struct platform_device *md800_snd_device;

 static int __init md800_board_init(void)
 {
 	int errorCode = 0;

 	errorCode = gpio_request(md800_spk_gpio, "Spk-Ctrl");
 	if (errorCode < 0) {
 		printk(KERN_ERR "Could not get Spk-Ctrl GPIO %d\n", md800_spk_gpio);
 		goto md800_board_init_exit1;
 	}

 	errorCode = gpio_direction_output(md800_spk_gpio, GPIO_LOW);
 	if (errorCode < 0) {
 		printk(KERN_ERR "Could not Set Spk-Ctrl GPIO high\n");
 		goto md800_board_init_exit0;
 	}

 	md800_snd_device = platform_device_alloc("soc-audio", -1);
 	if (!md800_snd_device)
 		return -ENOMEM;

 	platform_set_drvdata(md800_snd_device, &snd_soc_card_md800);

 	errorCode = platform_device_add(md800_snd_device);
 	if (errorCode) {
 		platform_device_put(md800_snd_device);
 		goto md800_board_init_exit0;
 	}

 	return 0;

 md800_board_init_exit0:
 	gpio_free(md800_spk_gpio);
 md800_board_init_exit1:
 	return errorCode;
 }

 static void __exit md800_board_exit(void)
 {
 	snd_soc_jack_notifier_unregister(&hp_jack, &hp_event);
 	snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios), hp_jack_gpios);
 	platform_device_unregister(md800_snd_device);
 	gpio_free(md800_spk_gpio);
 }


 module_init(md800_board_init);
 module_exit(md800_board_exit);

 MODULE_AUTHOR("Cao Rongrong <rrcao@ambarella.com>");
 MODULE_DESCRIPTION("MD800 Board with ES8328 Codec for ALSA");
 MODULE_LICENSE("GPL");
	/*
	* sound/soc/md800.c
	*
	* Author: Cao Rongrong <rrcao@ambarella.com>
	*
	* History:
	* 2011/10/19 - [Cao Rongrong] Created file
	*
	* Copyright (C) 2004-2009, Ambarella, Inc.
	*
	* 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/kernel.h>
	#include <linux/module.h>
	#include <linux/init.h>
	#include <linux/io.h>
	#include <linux/platform_device.h>
	#include <linux/delay.h>

	#include <sound/core.h>
	#include <sound/pcm.h>
	#include <sound/pcm_params.h>
	#include <sound/initval.h>
	#include <sound/soc.h>
	#include <sound/jack.h>
	#include <sound/soc-dapm.h>

	#include <mach/hardware.h>
	#include <plat/audio.h>

	#include "ambarella_i2s.h"
	#include "../codecs/es8328.h"

	/* Headset jack detection DAPM pins */
	static struct snd_soc_jack hp_jack;

	static struct snd_soc_jack_pin hp_jack_pins[] = {
	{
	.pin = "Speaker",
	.mask = SND_JACK_HEADPHONE,
	.invert = 1,
	},
	};

	static struct snd_soc_jack_gpio hp_jack_gpios[] = {
	{
	.gpio = GPIO(12),
	.name = "hpdet-gpio",
	.report = SND_JACK_HEADPHONE,
	.debounce_time = 200,
	.invert = 1,
	},
	};

	#define MD800_SPK_ON 0
	#define MD800_SPK_OFF 1

	/* default: Speaker output */
	static int md800_spk_func = MD800_SPK_ON;
	static int md800_spk_gpio = GPIO(139);
	static int md800_spk_level = GPIO_HIGH;

	static struct notifier_block hp_event;

	/* headphone inserted, so we disable speaker. */
	static int md800_hp_event(struct notifier_block nb, unsigned long val, void data)
	{
	if (val != 0)
	md800_spk_func = MD800_SPK_OFF;
	else
	md800_spk_func = MD800_SPK_ON;

	return NOTIFY_OK;
	}

	static void md800_ext_control(struct snd_soc_codec *codec)
	{
	int errorCode = 0;
	struct snd_soc_dapm_context *dapm = &codec->dapm;

	if (md800_spk_func == MD800_SPK_ON){
	errorCode = gpio_direction_output(md800_spk_gpio, !!md800_spk_level);
	if (errorCode < 0) {
	printk(KERN_ERR "Could not Set Spk-Ctrl GPIO high\n");
	goto err_exit;
	}
	mdelay(1);
	snd_soc_dapm_enable_pin(dapm, "Speaker");
	} else {
	errorCode = gpio_direction_output(md800_spk_gpio, !md800_spk_level);
	if (errorCode < 0) {
	printk(KERN_ERR "Could not Set Spk-Ctrl GPIO low\n");
	goto err_exit;
	}
	mdelay(1);
	snd_soc_dapm_disable_pin(dapm, "Speaker");
	}

	/* signal a DAPM event */
	snd_soc_dapm_sync(dapm);

	err_exit:
	return;
	}

	static int md800_startup(struct snd_pcm_substream *substream)
	{
	struct snd_soc_pcm_runtime *rtd = substream->private_data;
	struct snd_soc_codec *codec = rtd->codec;

	/* check the jack status at stream startup */
	md800_ext_control(codec);
	return 0;
	}

	static int md800_board_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;
	int errorCode = 0, amb_mclk, mclk, oversample;

	switch (params_rate(params)) {
	case 8000:
	amb_mclk = AudioCodec_2_048M;
	mclk = 2048000;
	oversample = AudioCodec_256xfs;
	break;
	case 11025:
	amb_mclk = AudioCodec_2_8224M;
	mclk = 2822400;
	oversample = AudioCodec_256xfs;
	break;
	case 12000:
	amb_mclk = AudioCodec_3_072M;
	mclk = 3072000;
	oversample = AudioCodec_256xfs;
	break;
	case 16000:
	amb_mclk = AudioCodec_4_096M;
	mclk = 4096000;
	oversample = AudioCodec_256xfs;
	break;
	case 22050:
	amb_mclk = AudioCodec_5_6448M;
	mclk = 5644800;
	oversample = AudioCodec_256xfs;
	break;
	case 24000:
	amb_mclk = AudioCodec_6_144;
	mclk = 6144000;
	oversample = AudioCodec_256xfs;
	break;
	case 32000:
	amb_mclk = AudioCodec_8_192M;
	mclk = 8192000;
	oversample = AudioCodec_256xfs;
	break;
	case 44100:
	amb_mclk = AudioCodec_11_2896M;
	mclk = 11289600;
	oversample = AudioCodec_256xfs;
	break;
	case 48000:
	amb_mclk = AudioCodec_12_288M;
	mclk = 12288000;
	oversample = AudioCodec_256xfs;
	break;
	default:
	errorCode = -EINVAL;
	goto hw_params_exit;
	}

	/* set the I2S system data format*/
	errorCode = snd_soc_dai_set_fmt(codec_dai, SND_SOC_DAIFMT_I2S \|
	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBS_CFS);
	if (errorCode < 0) {
	pr_err("can't set codec DAI configuration\n");
	goto hw_params_exit;
	}

	errorCode = snd_soc_dai_set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S \|
	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBS_CFS);
	if (errorCode < 0) {
	pr_err("can't set cpu DAI configuration\n");
	goto hw_params_exit;
	}

	/* set the I2S system clock*/
	errorCode = snd_soc_dai_set_sysclk(codec_dai, ES8328_SYSCLK, mclk, 0);
	if (errorCode < 0) {
	pr_err("can't set cpu MCLK configuration\n");
	goto hw_params_exit;
	}

	errorCode = snd_soc_dai_set_sysclk(cpu_dai, AMBARELLA_CLKSRC_ONCHIP, amb_mclk, 0);
	if (errorCode < 0) {
	pr_err("can't set cpu MCLK configuration\n");
	goto hw_params_exit;
	}

	errorCode = snd_soc_dai_set_clkdiv(cpu_dai, AMBARELLA_CLKDIV_LRCLK, oversample);
	if (errorCode < 0) {
	pr_err("can't set cpu MCLK/SF ratio\n");
	goto hw_params_exit;
	}

	hw_params_exit:
	return errorCode;
	}



	static struct snd_soc_ops md800_board_ops = {
	.startup = md800_startup,
	.hw_params = md800_board_hw_params,
	};

	static int md800_get_spk(struct snd_kcontrol kcontrol, struct snd_ctl_elem_value ucontrol)
	{
	ucontrol->value.integer.value[0] = md800_spk_func;
	return 0;
	}

	static int md800_set_spk(struct snd_kcontrol kcontrol, struct snd_ctl_elem_value ucontrol)
	{
	struct snd_soc_codec *codec = snd_kcontrol_chip(kcontrol);

	if (md800_spk_func == ucontrol->value.integer.value[0])
	return 0;

	md800_spk_func = ucontrol->value.integer.value[0];
	md800_ext_control(codec);
	return 1;
	}

	static int md800_spk_event(struct snd_soc_dapm_widget *w,
	struct snd_kcontrol *k, int event)
	{
	int errorCode = 0;

	if (SND_SOC_DAPM_EVENT_ON(event) && (md800_spk_func == MD800_SPK_ON)){
	errorCode = gpio_direction_output(md800_spk_gpio, !!md800_spk_level);
	if (errorCode < 0) {
	printk(KERN_ERR "Could not Set Spk-Ctrl GPIO high\n");
	goto err_exit;
	}
	} else {
	errorCode = gpio_direction_output(md800_spk_gpio, !md800_spk_level);
	if (errorCode < 0) {
	printk(KERN_ERR "Could not Set Spk-Ctrl GPIO low\n");
	goto err_exit;
	}
	}
	mdelay(1);

	err_exit:
	return errorCode;
	}


	/* md800 dapm widgets */
	static const struct snd_soc_dapm_widget md800_dapm_widgets[] = {
	SND_SOC_DAPM_MIC("Mic Jack", NULL),
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_SPK("Speaker", md800_spk_event),
	};

	/* md800 audio map (connections to the codec pins) */
	static const struct snd_soc_dapm_route md800_audio_map[] = {
	/* mic is connected to MICIN (via right channel of headphone jack) */
	{"MICIN", NULL, "Mic Jack"},

	/* headphone connected to LHPOUT1, RHPOUT1 */
	{"Headphone Jack", NULL, "LOUT1"},
	{"Headphone Jack", NULL, "ROUT1"},

	/* speaker connected to LOUT, ROUT */
	{"Speaker", NULL, "ROUT1"},
	{"Speaker", NULL, "LOUT1"},
	};

	static const char *spk_function[] = {"On", "Off"};

	static const struct soc_enum md800_enum[] = {
	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
	};

	static const struct snd_kcontrol_new es8328_md800_controls[] = {
	SOC_ENUM_EXT("Speaker Function", md800_enum[0], md800_get_spk , md800_set_spk),
	};

	static int md800_es8328_init(struct snd_soc_pcm_runtime *rtd)
	{
	int errorCode = 0;
	struct snd_soc_codec *codec = rtd->codec;
	struct snd_soc_dapm_context *dapm = &codec->dapm;

	/* not connected */
	snd_soc_dapm_nc_pin(dapm, "LINPUT1");
	snd_soc_dapm_nc_pin(dapm, "RINPUT1");
	snd_soc_dapm_nc_pin(dapm, "LOUT2");
	snd_soc_dapm_nc_pin(dapm, "ROUT2");

	snd_soc_dapm_enable_pin(dapm, "MICIN");

	/* Add md800 specific controls */
	snd_soc_add_controls(codec, es8328_md800_controls,
	ARRAY_SIZE(es8328_md800_controls));

	/* Add md800 specific widgets */
	snd_soc_dapm_new_controls(dapm,
	md800_dapm_widgets,
	ARRAY_SIZE(md800_dapm_widgets));

	/* Setup md800 specific audio path md800_audio_map */
	snd_soc_dapm_add_routes(dapm,
	md800_audio_map,
	ARRAY_SIZE(md800_audio_map));

	snd_soc_dapm_sync(dapm);

	ambarella_i2s_add_controls(codec);

	/* Headset jack detection */
	errorCode = snd_soc_jack_new(codec, "Headset Jack",
	SND_JACK_HEADSET, &hp_jack);
	if (errorCode)
	return errorCode;

	errorCode = snd_soc_jack_add_pins(&hp_jack, ARRAY_SIZE(hp_jack_pins),
	hp_jack_pins);
	if (errorCode)
	return errorCode;

	errorCode = snd_soc_jack_add_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios),
	hp_jack_gpios);

	hp_event.notifier_call = md800_hp_event;
	snd_soc_jack_notifier_register(&hp_jack, &hp_event);

	return errorCode;
	}


	/* md800 digital audio interface glue - connects codec <--> A2S */
	static struct snd_soc_dai_link md800_dai_link = {
	.name = "ES8328",
	.stream_name = "ES8328-STREAM",
	.cpu_dai_name = "ambarella-i2s.0",
	.platform_name = "ambarella-pcm-audio",
	.codec_dai_name = "ES8328",
	.codec_name = "es8328-codec.0-0010",
	.init = md800_es8328_init,
	.ops = &md800_board_ops,
	};


	/* md800 audio machine driver */
	static struct snd_soc_card snd_soc_card_md800 = {
	.name = "MD800",
	.dai_link = &md800_dai_link,
	.num_links = 1,
	};

	static struct platform_device *md800_snd_device;

	static int __init md800_board_init(void)
	{
	int errorCode = 0;

	errorCode = gpio_request(md800_spk_gpio, "Spk-Ctrl");
	if (errorCode < 0) {
	printk(KERN_ERR "Could not get Spk-Ctrl GPIO %d\n", md800_spk_gpio);
	goto md800_board_init_exit1;
	}

	errorCode = gpio_direction_output(md800_spk_gpio, GPIO_LOW);
	if (errorCode < 0) {
	printk(KERN_ERR "Could not Set Spk-Ctrl GPIO high\n");
	goto md800_board_init_exit0;
	}

	md800_snd_device = platform_device_alloc("soc-audio", -1);
	if (!md800_snd_device)
	return -ENOMEM;

	platform_set_drvdata(md800_snd_device, &snd_soc_card_md800);

	errorCode = platform_device_add(md800_snd_device);
	if (errorCode) {
	platform_device_put(md800_snd_device);
	goto md800_board_init_exit0;
	}

	return 0;

	md800_board_init_exit0:
	gpio_free(md800_spk_gpio);
	md800_board_init_exit1:
	return errorCode;
	}

	static void __exit md800_board_exit(void)
	{
	snd_soc_jack_notifier_unregister(&hp_jack, &hp_event);
	snd_soc_jack_free_gpios(&hp_jack, ARRAY_SIZE(hp_jack_gpios), hp_jack_gpios);
	platform_device_unregister(md800_snd_device);
	gpio_free(md800_spk_gpio);
	}


	module_init(md800_board_init);
	module_exit(md800_board_exit);

	MODULE_AUTHOR("Cao Rongrong <rrcao@ambarella.com>");
	MODULE_DESCRIPTION("MD800 Board with ES8328 Codec for ALSA");
	MODULE_LICENSE("GPL");