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Commit 74e72201 authored by Marek Vasut's avatar Marek Vasut Committed by Mark Brown
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ASoC: Add Palm/PXA27x unified ASoC audio driver 



this patch adds asoc audio driver for pxa27x based Palm PDAs. I tested it for
palmtx, t5 and ld, it should work with palmz72 as well (slapin, please test).
I sent it here some time ago, but now I got to fixing bugs in it. It should
be somehow mostly ok and ready for applying.

[Converted to use snd_soc_dapm_nc_pin() and bool Kconfig -- broonie]

Signed-off-by: default avatarMarek Vasut <marek.vasut@gmail.com>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent 0ee46636

arch/arm/mach-pxa/include/mach/palmasoc.h

0 → 100644
+13 −0
Original line number Diff line number Diff line 
#ifndef _INCLUDE_PALMASOC_H_

#define _INCLUDE_PALMASOC_H_

struct palm27x_asoc_info {

	int	jack_gpio;

};



#ifdef CONFIG_SND_PXA2XX_SOC_PALM27X

void __init palm27x_asoc_set_pdata(struct palm27x_asoc_info *data);

#else

static inline void palm27x_asoc_set_pdata(struct palm27x_asoc_info *data) {}

#endif



#endif

sound/soc/pxa/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -79,6 +79,15 @@ config SND_PXA2XX_SOC_EM_X270 
	  Say Y if you want to add support for SoC audio on

	  CompuLab EM-x270.



config SND_PXA2XX_SOC_PALM27X

	bool "SoC Audio support for Palm T|X, T5 and LifeDrive"

	depends on SND_PXA2XX_SOC && (MACH_PALMLD || MACH_PALMTX || MACH_PALMT5)

	select SND_PXA2XX_SOC_AC97

	select SND_SOC_WM9712

	help

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

	  Palm T|X, T5 or LifeDrive handheld computer.



config SND_SOC_ZYLONITE

	tristate "SoC Audio support for Marvell Zylonite"

	depends on SND_PXA2XX_SOC && MACH_ZYLONITE

sound/soc/pxa/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -16,6 +16,7 @@ snd-soc-tosa-objs := tosa.o 
snd-soc-e800-objs := e800_wm9712.o

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

snd-soc-em-x270-objs := em-x270.o

snd-soc-palm27x-objs := palm27x.o



obj-$(CONFIG_SND_PXA2XX_SOC_CORGI) += snd-soc-corgi.o

obj-$(CONFIG_SND_PXA2XX_SOC_POODLE) += snd-soc-poodle.o
@@ -23,3 +24,4 @@ obj-$(CONFIG_SND_PXA2XX_SOC_TOSA) += snd-soc-tosa.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

obj-$(CONFIG_SND_PXA2XX_SOC_PALM27X) += snd-soc-palm27x.o

sound/soc/pxa/palm27x.c

0 → 100644
+269 −0
Original line number Diff line number Diff line 
/*

 * linux/sound/soc/pxa/palm27x.c

 *

 * SoC Audio driver for Palm T|X, T5 and LifeDrive

 *

 * based on tosa.c

 *

 * Copyright (C) 2008 Marek Vasut <marek.vasut@gmail.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.

 *

 */



#include <linux/module.h>

#include <linux/moduleparam.h>

#include <linux/device.h>

#include <linux/gpio.h>

#include <linux/interrupt.h>

#include <linux/irq.h>



#include <sound/core.h>

#include <sound/pcm.h>

#include <sound/soc.h>

#include <sound/soc-dapm.h>



#include <asm/mach-types.h>

#include <mach/audio.h>

#include <mach/palmasoc.h>



#include "../codecs/wm9712.h"

#include "pxa2xx-pcm.h"

#include "pxa2xx-ac97.h"



static int palm27x_jack_func = 1;

static int palm27x_spk_func = 1;

static int palm27x_ep_gpio = -1;



static void palm27x_ext_control(struct snd_soc_codec *codec)

{

	if (!palm27x_spk_func)

		snd_soc_dapm_enable_pin(codec, "Speaker");

	else

		snd_soc_dapm_disable_pin(codec, "Speaker");



	if (!palm27x_jack_func)

		snd_soc_dapm_enable_pin(codec, "Headphone Jack");

	else

		snd_soc_dapm_disable_pin(codec, "Headphone Jack");



	snd_soc_dapm_sync(codec);

}



static int palm27x_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 */

	palm27x_ext_control(codec);

	return 0;

}



static struct snd_soc_ops palm27x_ops = {

	.startup = palm27x_startup,

};



static irqreturn_t palm27x_interrupt(int irq, void *v)

{

	palm27x_spk_func = gpio_get_value(palm27x_ep_gpio);

	palm27x_jack_func = !palm27x_spk_func;

	return IRQ_HANDLED;

}



static int palm27x_get_jack(struct snd_kcontrol *kcontrol,

	struct snd_ctl_elem_value *ucontrol)

{

	ucontrol->value.integer.value[0] = palm27x_jack_func;

	return 0;

}



static int palm27x_set_jack(struct snd_kcontrol *kcontrol,

	struct snd_ctl_elem_value *ucontrol)

{

	struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);



	if (palm27x_jack_func == ucontrol->value.integer.value[0])

		return 0;



	palm27x_jack_func = ucontrol->value.integer.value[0];

	palm27x_ext_control(codec);

	return 1;

}



static int palm27x_get_spk(struct snd_kcontrol *kcontrol,

	struct snd_ctl_elem_value *ucontrol)

{

	ucontrol->value.integer.value[0] = palm27x_spk_func;

	return 0;

}



static int palm27x_set_spk(struct snd_kcontrol *kcontrol,

	struct snd_ctl_elem_value *ucontrol)

{

	struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);



	if (palm27x_spk_func == ucontrol->value.integer.value[0])

		return 0;



	palm27x_spk_func = ucontrol->value.integer.value[0];

	palm27x_ext_control(codec);

	return 1;

}



/* PalmTX machine dapm widgets */

static const struct snd_soc_dapm_widget palm27x_dapm_widgets[] = {

	SND_SOC_DAPM_HP("Headphone Jack", NULL),

	SND_SOC_DAPM_SPK("Speaker", NULL),

};



/* PalmTX audio map */

static const struct snd_soc_dapm_route audio_map[] = {

	/* headphone connected to HPOUTL, HPOUTR */

	{"Headphone Jack", NULL, "HPOUTL"},

	{"Headphone Jack", NULL, "HPOUTR"},



	/* ext speaker connected to ROUT2, LOUT2 */

	{"Speaker", NULL, "LOUT2"},

	{"Speaker", NULL, "ROUT2"},

};



static const char *jack_function[] = {"Headphone", "Off"};

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

static const struct soc_enum palm27x_enum[] = {

	SOC_ENUM_SINGLE_EXT(2, jack_function),

	SOC_ENUM_SINGLE_EXT(2, spk_function),

};



static const struct snd_kcontrol_new palm27x_controls[] = {

	SOC_ENUM_EXT("Jack Function", palm27x_enum[0], palm27x_get_jack,

		palm27x_set_jack),

	SOC_ENUM_EXT("Speaker Function", palm27x_enum[1], palm27x_get_spk,

		palm27x_set_spk),

};



static int palm27x_ac97_init(struct snd_soc_codec *codec)

{

	int i, err;



	snd_soc_dapm_nc_pin(codec, "OUT3");

	snd_soc_dapm_nc_pin(codec, "MONOOUT");



	/* add palm27x specific controls */

	for (i = 0; i < ARRAY_SIZE(palm27x_controls); i++) {

		err = snd_ctl_add(codec->card,

				snd_soc_cnew(&palm27x_controls[i],

						codec, NULL));

		if (err < 0)

			return err;

	}



	/* add palm27x specific widgets */

	snd_soc_dapm_new_controls(codec, palm27x_dapm_widgets,

				ARRAY_SIZE(palm27x_dapm_widgets));



	/* set up palm27x specific audio path audio_map */

	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 palm27x_dai[] = {

{

	.name = "AC97 HiFi",

	.stream_name = "AC97 HiFi",

	.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],

	.codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],

	.init = palm27x_ac97_init,

	.ops = &palm27x_ops,

},

{

	.name = "AC97 Aux",

	.stream_name = "AC97 Aux",

	.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],

	.codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],

	.ops = &palm27x_ops,

},

};



static struct snd_soc_machine palm27x_asoc = {

	.name = "Palm/PXA27x",

	.dai_link = palm27x_dai,

	.num_links = ARRAY_SIZE(palm27x_dai),

};



static struct snd_soc_device palm27x_snd_devdata = {

	.machine = &palm27x_asoc,

	.platform = &pxa2xx_soc_platform,

	.codec_dev = &soc_codec_dev_wm9712,

};



static struct platform_device *palm27x_snd_device;



static int __init palm27x_asoc_init(void)

{

	int ret;



	if (!(machine_is_palmtx() || machine_is_palmt5() ||

		machine_is_palmld()))

		return -ENODEV;



	ret = gpio_request(palm27x_ep_gpio, "Headphone Jack");

	if (ret)

		return ret;

	ret = gpio_direction_input(palm27x_ep_gpio);

	if (ret)

		goto err_alloc;



	if (request_irq(gpio_to_irq(palm27x_ep_gpio), palm27x_interrupt,

			IRQF_TRIGGER_RISING | IRQF_TRIGGER_FALLING,

			"Headphone jack", NULL))

		goto err_alloc;



	palm27x_snd_device = platform_device_alloc("soc-audio", -1);

	if (!palm27x_snd_device) {

		ret = -ENOMEM;

		goto err_dev;

	}



	platform_set_drvdata(palm27x_snd_device, &palm27x_snd_devdata);

	palm27x_snd_devdata.dev = &palm27x_snd_device->dev;

	ret = platform_device_add(palm27x_snd_device);



	if (ret != 0)

		goto put_device;



	return 0;



put_device:

	platform_device_put(palm27x_snd_device);

err_dev:

	free_irq(gpio_to_irq(palm27x_ep_gpio), NULL);

err_alloc:

	gpio_free(palm27x_ep_gpio);



	return ret;

}



static void __exit palm27x_asoc_exit(void)

{

	free_irq(gpio_to_irq(palm27x_ep_gpio), NULL);

	gpio_free(palm27x_ep_gpio);

	platform_device_unregister(palm27x_snd_device);

}



void __init palm27x_asoc_set_pdata(struct palm27x_asoc_info *data)

{

	palm27x_ep_gpio = data->jack_gpio;

}



module_init(palm27x_asoc_init);

module_exit(palm27x_asoc_exit);



/* Module information */

MODULE_AUTHOR("Marek Vasut <marek.vasut@gmail.com>");

MODULE_DESCRIPTION("ALSA SoC Palm T|X, T5 and LifeDrive");

MODULE_LICENSE("GPL");