sound/soc/pxa/spitz.c - linux/kernel/git/davem/net - Git at Google

 /*
  * spitz.c  --  SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita
  *
  * Copyright 2005 Wolfson Microelectronics PLC.
  * Copyright 2005 Openedhand Ltd.
  *
  * Authors: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
  *          Richard Purdie <richard@openedhand.com>
  *
  *  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.
  *
  *  Revision history
  *    30th Nov 2005   Initial version.
  *
  */

 #include <linux/module.h>
 #include <linux/moduleparam.h>
 #include <linux/timer.h>
 #include <linux/interrupt.h>
 #include <linux/platform_device.h>
 #include <sound/core.h>
 #include <sound/pcm.h>
 #include <sound/soc.h>
 #include <sound/soc-dapm.h>

 #include <asm/mach-types.h>
 #include <asm/hardware/scoop.h>
 #include <asm/arch/pxa-regs.h>
 #include <asm/arch/hardware.h>
 #include <asm/arch/akita.h>
 #include <asm/arch/spitz.h>
 #include "../codecs/wm8750.h"
 #include "pxa2xx-pcm.h"
 #include "pxa2xx-i2s.h"

 #define SPITZ_HP        0
 #define SPITZ_MIC       1
 #define SPITZ_LINE      2
 #define SPITZ_HEADSET   3
 #define SPITZ_HP_OFF    4
 #define SPITZ_SPK_ON    0
 #define SPITZ_SPK_OFF   1

  /* audio clock in Hz - rounded from 12.235MHz */
 #define SPITZ_AUDIO_CLOCK 12288000

 static int spitz_jack_func;
 static int spitz_spk_func;

 static void spitz_ext_control(struct snd_soc_codec *codec)
 {
 	if (spitz_spk_func == SPITZ_SPK_ON)
 		snd_soc_dapm_set_endpoint(codec, "Ext Spk", 1);
 	else
 		snd_soc_dapm_set_endpoint(codec, "Ext Spk", 0);

 	/* set up jack connection */
 	switch (spitz_jack_func) {
 	case SPITZ_HP:
 		/* enable and unmute hp jack, disable mic bias */
 		snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
 		snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);
 		snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
 		snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);
 		set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
 		set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
 		break;
 	case SPITZ_MIC:
 		/* enable mic jack and bias, mute hp */
 		snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
 		snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
 		snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
 		snd_soc_dapm_set_endpoint(codec, "Mic Jack", 1);
 		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
 		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
 		break;
 	case SPITZ_LINE:
 		/* enable line jack, disable mic bias and mute hp */
 		snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
 		snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
 		snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);
 		snd_soc_dapm_set_endpoint(codec, "Line Jack", 1);
 		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
 		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
 		break;
 	case SPITZ_HEADSET:
 		/* enable and unmute headset jack enable mic bias, mute L hp */
 		snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
 		snd_soc_dapm_set_endpoint(codec, "Mic Jack", 1);
 		snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
 		snd_soc_dapm_set_endpoint(codec, "Headset Jack", 1);
 		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
 		set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
 		break;
 	case SPITZ_HP_OFF:

 		/* jack removed, everything off */
 		snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
 		snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
 		snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);
 		snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
 		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
 		reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
 		break;
 	}
 	snd_soc_dapm_sync_endpoints(codec);
 }

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

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

 static int spitz_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_codec_dai *codec_dai = rtd->dai->codec_dai;
 	struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
 	unsigned int clk = 0;
 	int ret = 0;

 	switch (params_rate(params)) {
 	case 8000:
 	case 16000:
 	case 48000:
 	case 96000:
 		clk = 12288000;
 		break;
 	case 11025:
 	case 22050:
 	case 44100:
 		clk = 11289600;
 		break;
 	}

 	/* set codec DAI configuration */
 	ret = codec_dai->dai_ops.set_fmt(codec_dai, SND_SOC_DAIFMT_I2S |
 		SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 	if (ret < 0)
 		return ret;

 	/* set cpu DAI configuration */
 	ret = cpu_dai->dai_ops.set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S |
 		SND_SOC_DAIFMT_NB_NF | SND_SOC_DAIFMT_CBS_CFS);
 	if (ret < 0)
 		return ret;

 	/* set the codec system clock for DAC and ADC */
 	ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8750_SYSCLK, clk,
 		SND_SOC_CLOCK_IN);
 	if (ret < 0)
 		return ret;

 	/* set the I2S system clock as input (unused) */
 	ret = cpu_dai->dai_ops.set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
 		SND_SOC_CLOCK_IN);
 	if (ret < 0)
 		return ret;

 	return 0;
 }

 static struct snd_soc_ops spitz_ops = {
 	.startup = spitz_startup,
 	.hw_params = spitz_hw_params,
 };

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

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

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

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

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

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

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

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

 static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
 	struct snd_kcontrol *k, int event)
 {
 	if (machine_is_borzoi() || machine_is_spitz()) {
 		if (SND_SOC_DAPM_EVENT_ON(event))
 			set_scoop_gpio(&spitzscoop2_device.dev,
 				SPITZ_SCP2_MIC_BIAS);
 		else
 			reset_scoop_gpio(&spitzscoop2_device.dev,
 				SPITZ_SCP2_MIC_BIAS);
 	}

 	if (machine_is_akita()) {
 		if (SND_SOC_DAPM_EVENT_ON(event))
 			akita_set_ioexp(&akitaioexp_device.dev,
 				AKITA_IOEXP_MIC_BIAS);
 		else
 			akita_reset_ioexp(&akitaioexp_device.dev,
 				AKITA_IOEXP_MIC_BIAS);
 	}
 	return 0;
 }

 /* spitz machine dapm widgets */
 static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
 	SND_SOC_DAPM_HP("Headphone Jack", NULL),
 	SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
 	SND_SOC_DAPM_SPK("Ext Spk", NULL),
 	SND_SOC_DAPM_LINE("Line Jack", NULL),

 	/* headset is a mic and mono headphone */
 	SND_SOC_DAPM_HP("Headset Jack", NULL),
 };

 /* Spitz machine audio_map */
 static const char *audio_map[][3] = {

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

 	/* headset connected to ROUT1 and LINPUT1 with bias (def below) */
 	{"Headset Jack", NULL, "ROUT1"},

 	/* ext speaker connected to LOUT2, ROUT2  */
 	{"Ext Spk", NULL , "ROUT2"},
 	{"Ext Spk", NULL , "LOUT2"},

 	/* mic is connected to input 1 - with bias */
 	{"LINPUT1", NULL, "Mic Bias"},
 	{"Mic Bias", NULL, "Mic Jack"},

 	/* line is connected to input 1 - no bias */
 	{"LINPUT1", NULL, "Line Jack"},

 	{NULL, NULL, NULL},
 };

 static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
 	"Off"};
 static const char *spk_function[] = {"On", "Off"};
 static const struct soc_enum spitz_enum[] = {
 	SOC_ENUM_SINGLE_EXT(5, jack_function),
 	SOC_ENUM_SINGLE_EXT(2, spk_function),
 };

 static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
 	SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
 		spitz_set_jack),
 	SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
 		spitz_set_spk),
 };

 /*
  * Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
  */
 static int spitz_wm8750_init(struct snd_soc_codec *codec)
 {
 	int i, err;

 	/* NC codec pins */
 	snd_soc_dapm_set_endpoint(codec, "RINPUT1", 0);
 	snd_soc_dapm_set_endpoint(codec, "LINPUT2", 0);
 	snd_soc_dapm_set_endpoint(codec, "RINPUT2", 0);
 	snd_soc_dapm_set_endpoint(codec, "LINPUT3", 0);
 	snd_soc_dapm_set_endpoint(codec, "RINPUT3", 0);
 	snd_soc_dapm_set_endpoint(codec, "OUT3", 0);
 	snd_soc_dapm_set_endpoint(codec, "MONO", 0);

 	/* Add spitz specific controls */
 	for (i = 0; i < ARRAY_SIZE(wm8750_spitz_controls); i++) {
 		err = snd_ctl_add(codec->card,
 			snd_soc_cnew(&wm8750_spitz_controls[i], codec, NULL));
 		if (err < 0)
 			return err;
 	}

 	/* Add spitz specific widgets */
 	for (i = 0; i < ARRAY_SIZE(wm8750_dapm_widgets); i++)
 		snd_soc_dapm_new_control(codec, &wm8750_dapm_widgets[i]);

 	/* Set up spitz specific audio path audio_map */
 	for (i = 0; audio_map[i][0] != NULL; i++)
 		snd_soc_dapm_connect_input(codec, audio_map[i][0],
 			audio_map[i][1], audio_map[i][2]);

 	snd_soc_dapm_sync_endpoints(codec);
 	return 0;
 }

 /* spitz digital audio interface glue - connects codec <--> CPU */
 static struct snd_soc_dai_link spitz_dai = {
 	.name = "wm8750",
 	.stream_name = "WM8750",
 	.cpu_dai = &pxa_i2s_dai,
 	.codec_dai = &wm8750_dai,
 	.init = spitz_wm8750_init,
 	.ops = &spitz_ops,
 };

 /* spitz audio machine driver */
 static struct snd_soc_machine snd_soc_machine_spitz = {
 	.name = "Spitz",
 	.dai_link = &spitz_dai,
 	.num_links = 1,
 };

 /* spitz audio private data */
 static struct wm8750_setup_data spitz_wm8750_setup = {
 	.i2c_address = 0x1b,
 };

 /* spitz audio subsystem */
 static struct snd_soc_device spitz_snd_devdata = {
 	.machine = &snd_soc_machine_spitz,
 	.platform = &pxa2xx_soc_platform,
 	.codec_dev = &soc_codec_dev_wm8750,
 	.codec_data = &spitz_wm8750_setup,
 };

 static struct platform_device *spitz_snd_device;

 static int __init spitz_init(void)
 {
 	int ret;

 	if (!(machine_is_spitz() || machine_is_borzoi() || machine_is_akita()))
 		return -ENODEV;

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

 	platform_set_drvdata(spitz_snd_device, &spitz_snd_devdata);
 	spitz_snd_devdata.dev = &spitz_snd_device->dev;
 	ret = platform_device_add(spitz_snd_device);

 	if (ret)
 		platform_device_put(spitz_snd_device);

 	return ret;
 }

 static void __exit spitz_exit(void)
 {
 	platform_device_unregister(spitz_snd_device);
 }

 module_init(spitz_init);
 module_exit(spitz_exit);

 MODULE_AUTHOR("Richard Purdie");
 MODULE_DESCRIPTION("ALSA SoC Spitz");
 MODULE_LICENSE("GPL");
	/*
	* spitz.c -- SoC audio for Sharp SL-Cxx00 models Spitz, Borzoi and Akita
	*
	* Copyright 2005 Wolfson Microelectronics PLC.
	* Copyright 2005 Openedhand Ltd.
	*
	* Authors: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
	* Richard Purdie <richard@openedhand.com>
	*
	* 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.
	*
	* Revision history
	* 30th Nov 2005 Initial version.
	*
	*/

	#include <linux/module.h>
	#include <linux/moduleparam.h>
	#include <linux/timer.h>
	#include <linux/interrupt.h>
	#include <linux/platform_device.h>
	#include <sound/core.h>
	#include <sound/pcm.h>
	#include <sound/soc.h>
	#include <sound/soc-dapm.h>

	#include <asm/mach-types.h>
	#include <asm/hardware/scoop.h>
	#include <asm/arch/pxa-regs.h>
	#include <asm/arch/hardware.h>
	#include <asm/arch/akita.h>
	#include <asm/arch/spitz.h>
	#include "../codecs/wm8750.h"
	#include "pxa2xx-pcm.h"
	#include "pxa2xx-i2s.h"

	#define SPITZ_HP 0
	#define SPITZ_MIC 1
	#define SPITZ_LINE 2
	#define SPITZ_HEADSET 3
	#define SPITZ_HP_OFF 4
	#define SPITZ_SPK_ON 0
	#define SPITZ_SPK_OFF 1

	/* audio clock in Hz - rounded from 12.235MHz */
	#define SPITZ_AUDIO_CLOCK 12288000

	static int spitz_jack_func;
	static int spitz_spk_func;

	static void spitz_ext_control(struct snd_soc_codec *codec)
	{
	if (spitz_spk_func == SPITZ_SPK_ON)
	snd_soc_dapm_set_endpoint(codec, "Ext Spk", 1);
	else
	snd_soc_dapm_set_endpoint(codec, "Ext Spk", 0);

	/* set up jack connection */
	switch (spitz_jack_func) {
	case SPITZ_HP:
	/* enable and unmute hp jack, disable mic bias */
	snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
	snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);
	snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
	snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);
	set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
	set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
	break;
	case SPITZ_MIC:
	/* enable mic jack and bias, mute hp */
	snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
	snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
	snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
	snd_soc_dapm_set_endpoint(codec, "Mic Jack", 1);
	reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
	reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
	break;
	case SPITZ_LINE:
	/* enable line jack, disable mic bias and mute hp */
	snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
	snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
	snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);
	snd_soc_dapm_set_endpoint(codec, "Line Jack", 1);
	reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
	reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
	break;
	case SPITZ_HEADSET:
	/* enable and unmute headset jack enable mic bias, mute L hp */
	snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
	snd_soc_dapm_set_endpoint(codec, "Mic Jack", 1);
	snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
	snd_soc_dapm_set_endpoint(codec, "Headset Jack", 1);
	reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
	set_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
	break;
	case SPITZ_HP_OFF:

	/* jack removed, everything off */
	snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);
	snd_soc_dapm_set_endpoint(codec, "Headset Jack", 0);
	snd_soc_dapm_set_endpoint(codec, "Mic Jack", 0);
	snd_soc_dapm_set_endpoint(codec, "Line Jack", 0);
	reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_L);
	reset_scoop_gpio(&spitzscoop_device.dev, SPITZ_SCP_MUTE_R);
	break;
	}
	snd_soc_dapm_sync_endpoints(codec);
	}

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

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

	static int spitz_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_codec_dai *codec_dai = rtd->dai->codec_dai;
	struct snd_soc_cpu_dai *cpu_dai = rtd->dai->cpu_dai;
	unsigned int clk = 0;
	int ret = 0;

	switch (params_rate(params)) {
	case 8000:
	case 16000:
	case 48000:
	case 96000:
	clk = 12288000;
	break;
	case 11025:
	case 22050:
	case 44100:
	clk = 11289600;
	break;
	}

	/* set codec DAI configuration */
	ret = codec_dai->dai_ops.set_fmt(codec_dai, SND_SOC_DAIFMT_I2S \|
	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
	return ret;

	/* set cpu DAI configuration */
	ret = cpu_dai->dai_ops.set_fmt(cpu_dai, SND_SOC_DAIFMT_I2S \|
	SND_SOC_DAIFMT_NB_NF \| SND_SOC_DAIFMT_CBS_CFS);
	if (ret < 0)
	return ret;

	/* set the codec system clock for DAC and ADC */
	ret = codec_dai->dai_ops.set_sysclk(codec_dai, WM8750_SYSCLK, clk,
	SND_SOC_CLOCK_IN);
	if (ret < 0)
	return ret;

	/* set the I2S system clock as input (unused) */
	ret = cpu_dai->dai_ops.set_sysclk(cpu_dai, PXA2XX_I2S_SYSCLK, 0,
	SND_SOC_CLOCK_IN);
	if (ret < 0)
	return ret;

	return 0;
	}

	static struct snd_soc_ops spitz_ops = {
	.startup = spitz_startup,
	.hw_params = spitz_hw_params,
	};

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

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

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

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

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

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

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

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

	static int spitz_mic_bias(struct snd_soc_dapm_widget *w,
	struct snd_kcontrol *k, int event)
	{
	if (machine_is_borzoi() \|\| machine_is_spitz()) {
	if (SND_SOC_DAPM_EVENT_ON(event))
	set_scoop_gpio(&spitzscoop2_device.dev,
	SPITZ_SCP2_MIC_BIAS);
	else
	reset_scoop_gpio(&spitzscoop2_device.dev,
	SPITZ_SCP2_MIC_BIAS);
	}

	if (machine_is_akita()) {
	if (SND_SOC_DAPM_EVENT_ON(event))
	akita_set_ioexp(&akitaioexp_device.dev,
	AKITA_IOEXP_MIC_BIAS);
	else
	akita_reset_ioexp(&akitaioexp_device.dev,
	AKITA_IOEXP_MIC_BIAS);
	}
	return 0;
	}

	/* spitz machine dapm widgets */
	static const struct snd_soc_dapm_widget wm8750_dapm_widgets[] = {
	SND_SOC_DAPM_HP("Headphone Jack", NULL),
	SND_SOC_DAPM_MIC("Mic Jack", spitz_mic_bias),
	SND_SOC_DAPM_SPK("Ext Spk", NULL),
	SND_SOC_DAPM_LINE("Line Jack", NULL),

	/* headset is a mic and mono headphone */
	SND_SOC_DAPM_HP("Headset Jack", NULL),
	};

	/* Spitz machine audio_map */
	static const char *audio_map[][3] = {

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

	/* headset connected to ROUT1 and LINPUT1 with bias (def below) */
	{"Headset Jack", NULL, "ROUT1"},

	/* ext speaker connected to LOUT2, ROUT2 */
	{"Ext Spk", NULL , "ROUT2"},
	{"Ext Spk", NULL , "LOUT2"},

	/* mic is connected to input 1 - with bias */
	{"LINPUT1", NULL, "Mic Bias"},
	{"Mic Bias", NULL, "Mic Jack"},

	/* line is connected to input 1 - no bias */
	{"LINPUT1", NULL, "Line Jack"},

	{NULL, NULL, NULL},
	};

	static const char *jack_function[] = {"Headphone", "Mic", "Line", "Headset",
	"Off"};
	static const char *spk_function[] = {"On", "Off"};
	static const struct soc_enum spitz_enum[] = {
	SOC_ENUM_SINGLE_EXT(5, jack_function),
	SOC_ENUM_SINGLE_EXT(2, spk_function),
	};

	static const struct snd_kcontrol_new wm8750_spitz_controls[] = {
	SOC_ENUM_EXT("Jack Function", spitz_enum[0], spitz_get_jack,
	spitz_set_jack),
	SOC_ENUM_EXT("Speaker Function", spitz_enum[1], spitz_get_spk,
	spitz_set_spk),
	};

	/*
	* Logic for a wm8750 as connected on a Sharp SL-Cxx00 Device
	*/
	static int spitz_wm8750_init(struct snd_soc_codec *codec)
	{
	int i, err;

	/* NC codec pins */
	snd_soc_dapm_set_endpoint(codec, "RINPUT1", 0);
	snd_soc_dapm_set_endpoint(codec, "LINPUT2", 0);
	snd_soc_dapm_set_endpoint(codec, "RINPUT2", 0);
	snd_soc_dapm_set_endpoint(codec, "LINPUT3", 0);
	snd_soc_dapm_set_endpoint(codec, "RINPUT3", 0);
	snd_soc_dapm_set_endpoint(codec, "OUT3", 0);
	snd_soc_dapm_set_endpoint(codec, "MONO", 0);

	/* Add spitz specific controls */
	for (i = 0; i < ARRAY_SIZE(wm8750_spitz_controls); i++) {
	err = snd_ctl_add(codec->card,
	snd_soc_cnew(&wm8750_spitz_controls[i], codec, NULL));
	if (err < 0)
	return err;
	}

	/* Add spitz specific widgets */
	for (i = 0; i < ARRAY_SIZE(wm8750_dapm_widgets); i++)
	snd_soc_dapm_new_control(codec, &wm8750_dapm_widgets[i]);

	/* Set up spitz specific audio path audio_map */
	for (i = 0; audio_map[i][0] != NULL; i++)
	snd_soc_dapm_connect_input(codec, audio_map[i][0],
	audio_map[i][1], audio_map[i][2]);

	snd_soc_dapm_sync_endpoints(codec);
	return 0;
	}

	/* spitz digital audio interface glue - connects codec <--> CPU */
	static struct snd_soc_dai_link spitz_dai = {
	.name = "wm8750",
	.stream_name = "WM8750",
	.cpu_dai = &pxa_i2s_dai,
	.codec_dai = &wm8750_dai,
	.init = spitz_wm8750_init,
	.ops = &spitz_ops,
	};

	/* spitz audio machine driver */
	static struct snd_soc_machine snd_soc_machine_spitz = {
	.name = "Spitz",
	.dai_link = &spitz_dai,
	.num_links = 1,
	};

	/* spitz audio private data */
	static struct wm8750_setup_data spitz_wm8750_setup = {
	.i2c_address = 0x1b,
	};

	/* spitz audio subsystem */
	static struct snd_soc_device spitz_snd_devdata = {
	.machine = &snd_soc_machine_spitz,
	.platform = &pxa2xx_soc_platform,
	.codec_dev = &soc_codec_dev_wm8750,
	.codec_data = &spitz_wm8750_setup,
	};

	static struct platform_device *spitz_snd_device;

	static int __init spitz_init(void)
	{
	int ret;

	if (!(machine_is_spitz() \|\| machine_is_borzoi() \|\| machine_is_akita()))
	return -ENODEV;

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

	platform_set_drvdata(spitz_snd_device, &spitz_snd_devdata);
	spitz_snd_devdata.dev = &spitz_snd_device->dev;
	ret = platform_device_add(spitz_snd_device);

	if (ret)
	platform_device_put(spitz_snd_device);

	return ret;
	}

	static void __exit spitz_exit(void)
	{
	platform_device_unregister(spitz_snd_device);
	}

	module_init(spitz_init);
	module_exit(spitz_exit);

	MODULE_AUTHOR("Richard Purdie");
	MODULE_DESCRIPTION("ALSA SoC Spitz");
	MODULE_LICENSE("GPL");