Commit a7e2e735 authored by Ian Molton's avatar Ian Molton Committed by Mark Brown
Browse files

ASoC: machine driver for Toshiba e750 



This patch adds support for the wm9705 ac97 codec as used in the Toshiba e750
PDA. It includes support for powering up / down the external headphone and
speaker amplifiers on this machine.

Signed-off-by: default avatarIan Molton <ian@mnementh.co.uk>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 2aceefef

arch/arm/mach-pxa/e750.c

+5 −0
Original line number Diff line number Diff line
@@ -133,6 +133,11 @@ static unsigned long e750_pin_config[] __initdata = { 
	/* IrDA */

	GPIO38_GPIO | MFP_LPM_DRIVE_HIGH,



	/* Audio power control */

	GPIO4_GPIO,  /* Headphone amp power */

	GPIO7_GPIO,  /* Speaker amp power */

	GPIO37_GPIO, /* Headphone detect */



	/* PC Card */

	GPIO8_GPIO,   /* CD0 */

	GPIO44_GPIO,  /* CD1 */

arch/arm/mach-pxa/include/mach/eseries-gpio.h

+5 −0
Original line number Diff line number Diff line
@@ -45,6 +45,11 @@ 
/* e7xx IrDA power control */

#define GPIO_E7XX_IR_OFF         38



/* e750 audio control GPIOs */

#define GPIO_E750_HP_AMP_OFF      4

#define GPIO_E750_SPK_AMP_OFF     7

#define GPIO_E750_HP_DETECT      37



/* ASIC related GPIOs */

#define GPIO_ESERIES_TMIO_IRQ        5

#define GPIO_ESERIES_TMIO_PCLR      19

sound/soc/pxa/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -61,6 +61,15 @@ config SND_PXA2XX_SOC_TOSA 
	  Say Y if you want to add support for SoC audio on Sharp

	  Zaurus SL-C6000x models (Tosa).



config SND_PXA2XX_SOC_E750

	tristate "SoC AC97 Audio support for e750"

	depends on SND_PXA2XX_SOC && MACH_E750

	select SND_SOC_WM9705

	select SND_PXA2XX_SOC_AC97

	help

	  Say Y if you want to add support for SoC audio on the

	  toshiba e750 PDA



config SND_PXA2XX_SOC_E800

	tristate "SoC AC97 Audio support for e800"

	depends on SND_PXA2XX_SOC && MACH_E800

sound/soc/pxa/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -13,6 +13,7 @@ obj-$(CONFIG_SND_PXA_SOC_SSP) += snd-soc-pxa-ssp.o 
snd-soc-corgi-objs := corgi.o

snd-soc-poodle-objs := poodle.o

snd-soc-tosa-objs := tosa.o

snd-soc-e750-objs := e750_wm9705.o

snd-soc-e800-objs := e800_wm9712.o

snd-soc-spitz-objs := spitz.o

snd-soc-em-x270-objs := em-x270.o
@@ -22,6 +23,7 @@ snd-soc-zylonite-objs := zylonite.o 
obj-$(CONFIG_SND_PXA2XX_SOC_CORGI) += snd-soc-corgi.o

obj-$(CONFIG_SND_PXA2XX_SOC_POODLE) += snd-soc-poodle.o

obj-$(CONFIG_SND_PXA2XX_SOC_TOSA) += snd-soc-tosa.o

obj-$(CONFIG_SND_PXA2XX_SOC_E750) += snd-soc-e750.o

obj-$(CONFIG_SND_PXA2XX_SOC_E800) += snd-soc-e800.o

obj-$(CONFIG_SND_PXA2XX_SOC_SPITZ) += snd-soc-spitz.o

obj-$(CONFIG_SND_PXA2XX_SOC_EM_X270) += snd-soc-em-x270.o

sound/soc/pxa/e750_wm9705.c

0 → 100644
+189 −0
Original line number Diff line number Diff line 
/*

 * e750-wm9705.c  --  SoC audio for e750

 *

 * Copyright 2007 (c) Ian Molton <spyro@f2s.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; version 2 ONLY.

 *

 */



#include <linux/module.h>

#include <linux/moduleparam.h>

#include <linux/gpio.h>



#include <sound/core.h>

#include <sound/pcm.h>

#include <sound/soc.h>

#include <sound/soc-dapm.h>



#include <mach/pxa-regs.h>

#include <mach/hardware.h>

#include <mach/audio.h>

#include <mach/eseries-gpio.h>



#include <asm/mach-types.h>



#include "../codecs/wm9705.h"

#include "pxa2xx-pcm.h"

#include "pxa2xx-ac97.h"



static int e750_spk_amp_event(struct snd_soc_dapm_widget *w,

				struct snd_kcontrol *kcontrol, int event)

{

	if (event & SND_SOC_DAPM_PRE_PMU)

		gpio_set_value(GPIO_E750_SPK_AMP_OFF, 0);

	else if (event & SND_SOC_DAPM_POST_PMD)

		gpio_set_value(GPIO_E750_SPK_AMP_OFF, 1);



	return 0;

}



static int e750_hp_amp_event(struct snd_soc_dapm_widget *w,

				struct snd_kcontrol *kcontrol, int event)

{

	if (event & SND_SOC_DAPM_PRE_PMU)

		gpio_set_value(GPIO_E750_HP_AMP_OFF, 0);

	else if (event & SND_SOC_DAPM_POST_PMD)

		gpio_set_value(GPIO_E750_HP_AMP_OFF, 1);



	return 0;

}



static const struct snd_soc_dapm_widget e750_dapm_widgets[] = {

	SND_SOC_DAPM_HP("Headphone Jack", NULL),

	SND_SOC_DAPM_SPK("Speaker", NULL),

	SND_SOC_DAPM_MIC("Mic (Internal)", NULL),

	SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,

			e750_hp_amp_event, SND_SOC_DAPM_PRE_PMU |

			SND_SOC_DAPM_POST_PMD),

	SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,

			e750_spk_amp_event, SND_SOC_DAPM_PRE_PMU |

			SND_SOC_DAPM_POST_PMD),

};



static const struct snd_soc_dapm_route audio_map[] = {

	{"Headphone Amp", NULL, "HPOUTL"},

	{"Headphone Amp", NULL, "HPOUTR"},

	{"Headphone Jack", NULL, "Headphone Amp"},



	{"Speaker Amp", NULL, "MONOOUT"},

	{"Speaker", NULL, "Speaker Amp"},



	{"MIC1", NULL, "Mic (Internal)"},

};



static int e750_ac97_init(struct snd_soc_codec *codec)

{

	snd_soc_dapm_nc_pin(codec, "LOUT");

	snd_soc_dapm_nc_pin(codec, "ROUT");

	snd_soc_dapm_nc_pin(codec, "PHONE");

	snd_soc_dapm_nc_pin(codec, "LINEINL");

	snd_soc_dapm_nc_pin(codec, "LINEINR");

	snd_soc_dapm_nc_pin(codec, "CDINL");

	snd_soc_dapm_nc_pin(codec, "CDINR");

	snd_soc_dapm_nc_pin(codec, "PCBEEP");

	snd_soc_dapm_nc_pin(codec, "MIC2");



	snd_soc_dapm_new_controls(codec, e750_dapm_widgets,

					ARRAY_SIZE(e750_dapm_widgets));



	snd_soc_dapm_add_routes(codec, audio_map, ARRAY_SIZE(audio_map));



	snd_soc_dapm_sync(codec);



	return 0;

}



static struct snd_soc_dai_link e750_dai[] = {

	{

		.name = "AC97",

		.stream_name = "AC97 HiFi",

		.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],

		.codec_dai = &wm9705_dai[WM9705_DAI_AC97_HIFI],

		.init = e750_ac97_init,

		/* use ops to check startup state */

	},

	{

		.name = "AC97 Aux",

		.stream_name = "AC97 Aux",

		.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],

		.codec_dai = &wm9705_dai[WM9705_DAI_AC97_AUX],

	},

};



static struct snd_soc_card e750 = {

	.name = "Toshiba e750",

	.platform = &pxa2xx_soc_platform,

	.dai_link = e750_dai,

	.num_links = ARRAY_SIZE(e750_dai),

};



static struct snd_soc_device e750_snd_devdata = {

	.card = &e750,

	.codec_dev = &soc_codec_dev_wm9705,

};



static struct platform_device *e750_snd_device;



static int __init e750_init(void)

{

	int ret;



	if (!machine_is_e750())

		return -ENODEV;



	ret = gpio_request(GPIO_E750_HP_AMP_OFF,  "Headphone amp");

	if (ret)

		return ret;



	ret = gpio_request(GPIO_E750_SPK_AMP_OFF, "Speaker amp");

	if (ret)

		goto free_hp_amp_gpio;



	ret = gpio_direction_output(GPIO_E750_HP_AMP_OFF, 1);

	if (ret)

		goto free_spk_amp_gpio;



	ret = gpio_direction_output(GPIO_E750_SPK_AMP_OFF, 1);

	if (ret)

		goto free_spk_amp_gpio;



	e750_snd_device = platform_device_alloc("soc-audio", -1);

	if (!e750_snd_device) {

		ret = -ENOMEM;

		goto free_spk_amp_gpio;

	}



	platform_set_drvdata(e750_snd_device, &e750_snd_devdata);

	e750_snd_devdata.dev = &e750_snd_device->dev;

	ret = platform_device_add(e750_snd_device);



	if (!ret)

		return 0;



/* Fail gracefully */

	platform_device_put(e750_snd_device);

free_spk_amp_gpio:

	gpio_free(GPIO_E750_SPK_AMP_OFF);

free_hp_amp_gpio:

	gpio_free(GPIO_E750_HP_AMP_OFF);



	return ret;

}



static void __exit e750_exit(void)

{

	platform_device_unregister(e750_snd_device);

	gpio_free(GPIO_E750_SPK_AMP_OFF);

	gpio_free(GPIO_E750_HP_AMP_OFF);

}



module_init(e750_init);

module_exit(e750_exit);



/* Module information */

MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");

MODULE_DESCRIPTION("ALSA SoC driver for e750");

MODULE_LICENSE("GPL v2");