sound/soc/omap/n810.c - kernel/common.git - Git at Google

 /*
  * n810.c  --  SoC audio for Nokia N810
  *
  * Copyright (C) 2008 Nokia Corporation
  *
  * Contact: Jarkko Nikula <jarkko.nikula@bitmer.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.
  *
  * 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/clk.h>
 #include <linux/i2c.h>
 #include <linux/platform_device.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/soc.h>

 #include <asm/mach-types.h>
 #include <linux/gpio.h>
 #include <linux/module.h>
 #include <linux/platform_data/asoc-ti-mcbsp.h>

 #include "omap-mcbsp.h"

 #define N810_HEADSET_AMP_GPIO	10
 #define N810_SPEAKER_AMP_GPIO	101

 enum {
 	N810_JACK_DISABLED,
 	N810_JACK_HP,
 	N810_JACK_HS,
 	N810_JACK_MIC,
 };

 static struct clk *sys_clkout2;
 static struct clk *sys_clkout2_src;
 static struct clk *func96m_clk;

 static int n810_spk_func;
 static int n810_jack_func;
 static int n810_dmic_func;

 static void n810_ext_control(struct snd_soc_dapm_context *dapm)
 {
 	int hp = 0, line1l = 0;

 	switch (n810_jack_func) {
 	case N810_JACK_HS:
 		line1l = 1;
 	case N810_JACK_HP:
 		hp = 1;
 		break;
 	case N810_JACK_MIC:
 		line1l = 1;
 		break;
 	}

 	snd_soc_dapm_mutex_lock(dapm);

 	if (n810_spk_func)
 		snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
 	else
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");

 	if (hp)
 		snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
 	else
 		snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
 	if (line1l)
 		snd_soc_dapm_enable_pin_unlocked(dapm, "LINE1L");
 	else
 		snd_soc_dapm_disable_pin_unlocked(dapm, "LINE1L");

 	if (n810_dmic_func)
 		snd_soc_dapm_enable_pin_unlocked(dapm, "DMic");
 	else
 		snd_soc_dapm_disable_pin_unlocked(dapm, "DMic");

 	snd_soc_dapm_sync_unlocked(dapm);

 	snd_soc_dapm_mutex_unlock(dapm);
 }

 static int n810_startup(struct snd_pcm_substream *substream)
 {
 	struct snd_pcm_runtime *runtime = substream->runtime;
 	struct snd_soc_pcm_runtime *rtd = substream->private_data;

 	snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2);

 	n810_ext_control(&rtd->card->dapm);
 	return clk_prepare_enable(sys_clkout2);
 }

 static void n810_shutdown(struct snd_pcm_substream *substream)
 {
 	clk_disable_unprepare(sys_clkout2);
 }

 static int n810_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;
 	int err;

 	/* Set the codec system clock for DAC and ADC */
 	err = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000,
 					    SND_SOC_CLOCK_IN);

 	return err;
 }

 static struct snd_soc_ops n810_ops = {
 	.startup = n810_startup,
 	.hw_params = n810_hw_params,
 	.shutdown = n810_shutdown,
 };

 static int n810_get_spk(struct snd_kcontrol *kcontrol,
 			struct snd_ctl_elem_value *ucontrol)
 {
 	ucontrol->value.enumerated.item[0] = n810_spk_func;

 	return 0;
 }

 static int n810_set_spk(struct snd_kcontrol *kcontrol,
 			struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_soc_card *card =  snd_kcontrol_chip(kcontrol);

 	if (n810_spk_func == ucontrol->value.enumerated.item[0])
 		return 0;

 	n810_spk_func = ucontrol->value.enumerated.item[0];
 	n810_ext_control(&card->dapm);

 	return 1;
 }

 static int n810_get_jack(struct snd_kcontrol *kcontrol,
 			 struct snd_ctl_elem_value *ucontrol)
 {
 	ucontrol->value.enumerated.item[0] = n810_jack_func;

 	return 0;
 }

 static int n810_set_jack(struct snd_kcontrol *kcontrol,
 			 struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_soc_card *card =  snd_kcontrol_chip(kcontrol);

 	if (n810_jack_func == ucontrol->value.enumerated.item[0])
 		return 0;

 	n810_jack_func = ucontrol->value.enumerated.item[0];
 	n810_ext_control(&card->dapm);

 	return 1;
 }

 static int n810_get_input(struct snd_kcontrol *kcontrol,
 			  struct snd_ctl_elem_value *ucontrol)
 {
 	ucontrol->value.enumerated.item[0] = n810_dmic_func;

 	return 0;
 }

 static int n810_set_input(struct snd_kcontrol *kcontrol,
 			  struct snd_ctl_elem_value *ucontrol)
 {
 	struct snd_soc_card *card =  snd_kcontrol_chip(kcontrol);

 	if (n810_dmic_func == ucontrol->value.enumerated.item[0])
 		return 0;

 	n810_dmic_func = ucontrol->value.enumerated.item[0];
 	n810_ext_control(&card->dapm);

 	return 1;
 }

 static int n810_spk_event(struct snd_soc_dapm_widget *w,
 			  struct snd_kcontrol *k, int event)
 {
 	if (SND_SOC_DAPM_EVENT_ON(event))
 		gpio_set_value(N810_SPEAKER_AMP_GPIO, 1);
 	else
 		gpio_set_value(N810_SPEAKER_AMP_GPIO, 0);

 	return 0;
 }

 static int n810_jack_event(struct snd_soc_dapm_widget *w,
 			   struct snd_kcontrol *k, int event)
 {
 	if (SND_SOC_DAPM_EVENT_ON(event))
 		gpio_set_value(N810_HEADSET_AMP_GPIO, 1);
 	else
 		gpio_set_value(N810_HEADSET_AMP_GPIO, 0);

 	return 0;
 }

 static const struct snd_soc_dapm_widget aic33_dapm_widgets[] = {
 	SND_SOC_DAPM_SPK("Ext Spk", n810_spk_event),
 	SND_SOC_DAPM_HP("Headphone Jack", n810_jack_event),
 	SND_SOC_DAPM_MIC("DMic", NULL),
 };

 static const struct snd_soc_dapm_route audio_map[] = {
 	{"Headphone Jack", NULL, "HPLOUT"},
 	{"Headphone Jack", NULL, "HPROUT"},

 	{"Ext Spk", NULL, "LLOUT"},
 	{"Ext Spk", NULL, "RLOUT"},

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

 static const char *spk_function[] = {"Off", "On"};
 static const char *jack_function[] = {"Off", "Headphone", "Headset", "Mic"};
 static const char *input_function[] = {"ADC", "Digital Mic"};
 static const struct soc_enum n810_enum[] = {
 	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
 	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
 	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
 };

 static const struct snd_kcontrol_new aic33_n810_controls[] = {
 	SOC_ENUM_EXT("Speaker Function", n810_enum[0],
 		     n810_get_spk, n810_set_spk),
 	SOC_ENUM_EXT("Jack Function", n810_enum[1],
 		     n810_get_jack, n810_set_jack),
 	SOC_ENUM_EXT("Input Select",  n810_enum[2],
 		     n810_get_input, n810_set_input),
 };

 /* Digital audio interface glue - connects codec <--> CPU */
 static struct snd_soc_dai_link n810_dai = {
 	.name = "TLV320AIC33",
 	.stream_name = "AIC33",
 	.cpu_dai_name = "omap-mcbsp.2",
 	.platform_name = "omap-mcbsp.2",
 	.codec_name = "tlv320aic3x-codec.2-0018",
 	.codec_dai_name = "tlv320aic3x-hifi",
 	.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
 		   SND_SOC_DAIFMT_CBM_CFM,
 	.ops = &n810_ops,
 };

 /* Audio machine driver */
 static struct snd_soc_card snd_soc_n810 = {
 	.name = "N810",
 	.owner = THIS_MODULE,
 	.dai_link = &n810_dai,
 	.num_links = 1,

 	.controls = aic33_n810_controls,
 	.num_controls = ARRAY_SIZE(aic33_n810_controls),
 	.dapm_widgets = aic33_dapm_widgets,
 	.num_dapm_widgets = ARRAY_SIZE(aic33_dapm_widgets),
 	.dapm_routes = audio_map,
 	.num_dapm_routes = ARRAY_SIZE(audio_map),
 	.fully_routed = true,
 };

 static struct platform_device *n810_snd_device;

 static int __init n810_soc_init(void)
 {
 	int err;
 	struct device *dev;

 	if (!of_have_populated_dt() ||
 	    (!of_machine_is_compatible("nokia,n810") &&
 	     !of_machine_is_compatible("nokia,n810-wimax")))
 		return -ENODEV;

 	n810_snd_device = platform_device_alloc("soc-audio", -1);
 	if (!n810_snd_device)
 		return -ENOMEM;

 	platform_set_drvdata(n810_snd_device, &snd_soc_n810);
 	err = platform_device_add(n810_snd_device);
 	if (err)
 		goto err1;

 	dev = &n810_snd_device->dev;

 	sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
 	if (IS_ERR(sys_clkout2_src)) {
 		dev_err(dev, "Could not get sys_clkout2_src clock\n");
 		err = PTR_ERR(sys_clkout2_src);
 		goto err2;
 	}
 	sys_clkout2 = clk_get(dev, "sys_clkout2");
 	if (IS_ERR(sys_clkout2)) {
 		dev_err(dev, "Could not get sys_clkout2\n");
 		err = PTR_ERR(sys_clkout2);
 		goto err3;
 	}
 	/*
 	 * Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
 	 * 96 MHz as its parent in order to get 12 MHz
 	 */
 	func96m_clk = clk_get(dev, "func_96m_ck");
 	if (IS_ERR(func96m_clk)) {
 		dev_err(dev, "Could not get func 96M clock\n");
 		err = PTR_ERR(func96m_clk);
 		goto err4;
 	}
 	clk_set_parent(sys_clkout2_src, func96m_clk);
 	clk_set_rate(sys_clkout2, 12000000);

 	if (WARN_ON((gpio_request(N810_HEADSET_AMP_GPIO, "hs_amp") < 0) ||
 		    (gpio_request(N810_SPEAKER_AMP_GPIO, "spk_amp") < 0))) {
 		err = -EINVAL;
 		goto err4;
 	}

 	gpio_direction_output(N810_HEADSET_AMP_GPIO, 0);
 	gpio_direction_output(N810_SPEAKER_AMP_GPIO, 0);

 	return 0;
 err4:
 	clk_put(sys_clkout2);
 err3:
 	clk_put(sys_clkout2_src);
 err2:
 	platform_device_del(n810_snd_device);
 err1:
 	platform_device_put(n810_snd_device);

 	return err;
 }

 static void __exit n810_soc_exit(void)
 {
 	gpio_free(N810_SPEAKER_AMP_GPIO);
 	gpio_free(N810_HEADSET_AMP_GPIO);
 	clk_put(sys_clkout2_src);
 	clk_put(sys_clkout2);
 	clk_put(func96m_clk);

 	platform_device_unregister(n810_snd_device);
 }

 module_init(n810_soc_init);
 module_exit(n810_soc_exit);

 MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@bitmer.com>");
 MODULE_DESCRIPTION("ALSA SoC Nokia N810");
 MODULE_LICENSE("GPL");
	/*
	* n810.c -- SoC audio for Nokia N810
	*
	* Copyright (C) 2008 Nokia Corporation
	*
	* Contact: Jarkko Nikula <jarkko.nikula@bitmer.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.
	*
	* 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/clk.h>
	#include <linux/i2c.h>
	#include <linux/platform_device.h>
	#include <sound/core.h>
	#include <sound/pcm.h>
	#include <sound/soc.h>

	#include <asm/mach-types.h>
	#include <linux/gpio.h>
	#include <linux/module.h>
	#include <linux/platform_data/asoc-ti-mcbsp.h>

	#include "omap-mcbsp.h"

	#define N810_HEADSET_AMP_GPIO 10
	#define N810_SPEAKER_AMP_GPIO 101

	enum {
	N810_JACK_DISABLED,
	N810_JACK_HP,
	N810_JACK_HS,
	N810_JACK_MIC,
	};

	static struct clk *sys_clkout2;
	static struct clk *sys_clkout2_src;
	static struct clk *func96m_clk;

	static int n810_spk_func;
	static int n810_jack_func;
	static int n810_dmic_func;

	static void n810_ext_control(struct snd_soc_dapm_context *dapm)
	{
	int hp = 0, line1l = 0;

	switch (n810_jack_func) {
	case N810_JACK_HS:
	line1l = 1;
	case N810_JACK_HP:
	hp = 1;
	break;
	case N810_JACK_MIC:
	line1l = 1;
	break;
	}

	snd_soc_dapm_mutex_lock(dapm);

	if (n810_spk_func)
	snd_soc_dapm_enable_pin_unlocked(dapm, "Ext Spk");
	else
	snd_soc_dapm_disable_pin_unlocked(dapm, "Ext Spk");

	if (hp)
	snd_soc_dapm_enable_pin_unlocked(dapm, "Headphone Jack");
	else
	snd_soc_dapm_disable_pin_unlocked(dapm, "Headphone Jack");
	if (line1l)
	snd_soc_dapm_enable_pin_unlocked(dapm, "LINE1L");
	else
	snd_soc_dapm_disable_pin_unlocked(dapm, "LINE1L");

	if (n810_dmic_func)
	snd_soc_dapm_enable_pin_unlocked(dapm, "DMic");
	else
	snd_soc_dapm_disable_pin_unlocked(dapm, "DMic");

	snd_soc_dapm_sync_unlocked(dapm);

	snd_soc_dapm_mutex_unlock(dapm);
	}

	static int n810_startup(struct snd_pcm_substream *substream)
	{
	struct snd_pcm_runtime *runtime = substream->runtime;
	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	snd_pcm_hw_constraint_single(runtime, SNDRV_PCM_HW_PARAM_CHANNELS, 2);

	n810_ext_control(&rtd->card->dapm);
	return clk_prepare_enable(sys_clkout2);
	}

	static void n810_shutdown(struct snd_pcm_substream *substream)
	{
	clk_disable_unprepare(sys_clkout2);
	}

	static int n810_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;
	int err;

	/* Set the codec system clock for DAC and ADC */
	err = snd_soc_dai_set_sysclk(codec_dai, 0, 12000000,
	SND_SOC_CLOCK_IN);

	return err;
	}

	static struct snd_soc_ops n810_ops = {
	.startup = n810_startup,
	.hw_params = n810_hw_params,
	.shutdown = n810_shutdown,
	};

	static int n810_get_spk(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	ucontrol->value.enumerated.item[0] = n810_spk_func;

	return 0;
	}

	static int n810_set_spk(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);

	if (n810_spk_func == ucontrol->value.enumerated.item[0])
	return 0;

	n810_spk_func = ucontrol->value.enumerated.item[0];
	n810_ext_control(&card->dapm);

	return 1;
	}

	static int n810_get_jack(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	ucontrol->value.enumerated.item[0] = n810_jack_func;

	return 0;
	}

	static int n810_set_jack(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);

	if (n810_jack_func == ucontrol->value.enumerated.item[0])
	return 0;

	n810_jack_func = ucontrol->value.enumerated.item[0];
	n810_ext_control(&card->dapm);

	return 1;
	}

	static int n810_get_input(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	ucontrol->value.enumerated.item[0] = n810_dmic_func;

	return 0;
	}

	static int n810_set_input(struct snd_kcontrol *kcontrol,
	struct snd_ctl_elem_value *ucontrol)
	{
	struct snd_soc_card *card = snd_kcontrol_chip(kcontrol);

	if (n810_dmic_func == ucontrol->value.enumerated.item[0])
	return 0;

	n810_dmic_func = ucontrol->value.enumerated.item[0];
	n810_ext_control(&card->dapm);

	return 1;
	}

	static int n810_spk_event(struct snd_soc_dapm_widget *w,
	struct snd_kcontrol *k, int event)
	{
	if (SND_SOC_DAPM_EVENT_ON(event))
	gpio_set_value(N810_SPEAKER_AMP_GPIO, 1);
	else
	gpio_set_value(N810_SPEAKER_AMP_GPIO, 0);

	return 0;
	}

	static int n810_jack_event(struct snd_soc_dapm_widget *w,
	struct snd_kcontrol *k, int event)
	{
	if (SND_SOC_DAPM_EVENT_ON(event))
	gpio_set_value(N810_HEADSET_AMP_GPIO, 1);
	else
	gpio_set_value(N810_HEADSET_AMP_GPIO, 0);

	return 0;
	}

	static const struct snd_soc_dapm_widget aic33_dapm_widgets[] = {
	SND_SOC_DAPM_SPK("Ext Spk", n810_spk_event),
	SND_SOC_DAPM_HP("Headphone Jack", n810_jack_event),
	SND_SOC_DAPM_MIC("DMic", NULL),
	};

	static const struct snd_soc_dapm_route audio_map[] = {
	{"Headphone Jack", NULL, "HPLOUT"},
	{"Headphone Jack", NULL, "HPROUT"},

	{"Ext Spk", NULL, "LLOUT"},
	{"Ext Spk", NULL, "RLOUT"},

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

	static const char *spk_function[] = {"Off", "On"};
	static const char *jack_function[] = {"Off", "Headphone", "Headset", "Mic"};
	static const char *input_function[] = {"ADC", "Digital Mic"};
	static const struct soc_enum n810_enum[] = {
	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(spk_function), spk_function),
	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(jack_function), jack_function),
	SOC_ENUM_SINGLE_EXT(ARRAY_SIZE(input_function), input_function),
	};

	static const struct snd_kcontrol_new aic33_n810_controls[] = {
	SOC_ENUM_EXT("Speaker Function", n810_enum[0],
	n810_get_spk, n810_set_spk),
	SOC_ENUM_EXT("Jack Function", n810_enum[1],
	n810_get_jack, n810_set_jack),
	SOC_ENUM_EXT("Input Select", n810_enum[2],
	n810_get_input, n810_set_input),
	};

	/* Digital audio interface glue - connects codec <--> CPU */
	static struct snd_soc_dai_link n810_dai = {
	.name = "TLV320AIC33",
	.stream_name = "AIC33",
	.cpu_dai_name = "omap-mcbsp.2",
	.platform_name = "omap-mcbsp.2",
	.codec_name = "tlv320aic3x-codec.2-0018",
	.codec_dai_name = "tlv320aic3x-hifi",
	.dai_fmt = SND_SOC_DAIFMT_I2S \| SND_SOC_DAIFMT_NB_NF \|
	SND_SOC_DAIFMT_CBM_CFM,
	.ops = &n810_ops,
	};

	/* Audio machine driver */
	static struct snd_soc_card snd_soc_n810 = {
	.name = "N810",
	.owner = THIS_MODULE,
	.dai_link = &n810_dai,
	.num_links = 1,

	.controls = aic33_n810_controls,
	.num_controls = ARRAY_SIZE(aic33_n810_controls),
	.dapm_widgets = aic33_dapm_widgets,
	.num_dapm_widgets = ARRAY_SIZE(aic33_dapm_widgets),
	.dapm_routes = audio_map,
	.num_dapm_routes = ARRAY_SIZE(audio_map),
	.fully_routed = true,
	};

	static struct platform_device *n810_snd_device;

	static int __init n810_soc_init(void)
	{
	int err;
	struct device *dev;

	if (!of_have_populated_dt() \|\|
	(!of_machine_is_compatible("nokia,n810") &&
	!of_machine_is_compatible("nokia,n810-wimax")))
	return -ENODEV;

	n810_snd_device = platform_device_alloc("soc-audio", -1);
	if (!n810_snd_device)
	return -ENOMEM;

	platform_set_drvdata(n810_snd_device, &snd_soc_n810);
	err = platform_device_add(n810_snd_device);
	if (err)
	goto err1;

	dev = &n810_snd_device->dev;

	sys_clkout2_src = clk_get(dev, "sys_clkout2_src");
	if (IS_ERR(sys_clkout2_src)) {
	dev_err(dev, "Could not get sys_clkout2_src clock\n");
	err = PTR_ERR(sys_clkout2_src);
	goto err2;
	}
	sys_clkout2 = clk_get(dev, "sys_clkout2");
	if (IS_ERR(sys_clkout2)) {
	dev_err(dev, "Could not get sys_clkout2\n");
	err = PTR_ERR(sys_clkout2);
	goto err3;
	}
	/*
	* Configure 12 MHz output on SYS_CLKOUT2. Therefore we must use
	* 96 MHz as its parent in order to get 12 MHz
	*/
	func96m_clk = clk_get(dev, "func_96m_ck");
	if (IS_ERR(func96m_clk)) {
	dev_err(dev, "Could not get func 96M clock\n");
	err = PTR_ERR(func96m_clk);
	goto err4;
	}
	clk_set_parent(sys_clkout2_src, func96m_clk);
	clk_set_rate(sys_clkout2, 12000000);

	if (WARN_ON((gpio_request(N810_HEADSET_AMP_GPIO, "hs_amp") < 0) \|\|
	(gpio_request(N810_SPEAKER_AMP_GPIO, "spk_amp") < 0))) {
	err = -EINVAL;
	goto err4;
	}

	gpio_direction_output(N810_HEADSET_AMP_GPIO, 0);
	gpio_direction_output(N810_SPEAKER_AMP_GPIO, 0);

	return 0;
	err4:
	clk_put(sys_clkout2);
	err3:
	clk_put(sys_clkout2_src);
	err2:
	platform_device_del(n810_snd_device);
	err1:
	platform_device_put(n810_snd_device);

	return err;
	}

	static void __exit n810_soc_exit(void)
	{
	gpio_free(N810_SPEAKER_AMP_GPIO);
	gpio_free(N810_HEADSET_AMP_GPIO);
	clk_put(sys_clkout2_src);
	clk_put(sys_clkout2);
	clk_put(func96m_clk);

	platform_device_unregister(n810_snd_device);
	}

	module_init(n810_soc_init);
	module_exit(n810_soc_exit);

	MODULE_AUTHOR("Jarkko Nikula <jarkko.nikula@bitmer.com>");
	MODULE_DESCRIPTION("ALSA SoC Nokia N810");
	MODULE_LICENSE("GPL");