Commit 6e24dd93 authored by Liam Girdwood's avatar Liam Girdwood Committed by Jaroslav Kysela
Browse files

[ALSA] ASoC pxa2xx Poodle machine support 



This patch adds Alsa audio support to the Sharp Zaurus SL-C5600 (Poodle)
machine.
From: Liam Girdwood <liam.girdwood@wolfsonmicro.com>
Signed-off-by: default avatarRichard Purdie <rpurdie@rpsys.net>
Signed-off-by: default avatarLiam Girdwood <liam.girdwood@wolfsonmicro.com>
Signed-off-by: default avatarTakashi Iwai <tiwai@suse.de>
Signed-off-by: default avatarJaroslav Kysela <perex@suse.cz>
parent 1b49cb98

sound/soc/pxa/poodle.c

0 → 100644
+329 −0
Original line number Diff line number Diff line 
/*

 * poodle.c  --  SoC audio for Poodle

 *

 * 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.

 *

 */



#include <linux/module.h>

#include <linux/moduleparam.h>

#include <linux/timer.h>

#include <linux/interrupt.h>

#include <linux/platform_device.h>

#include <sound/driver.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/locomo.h>

#include <asm/arch/pxa-regs.h>

#include <asm/arch/hardware.h>

#include <asm/arch/poodle.h>

#include <asm/arch/audio.h>



#include "../codecs/wm8731.h"

#include "pxa2xx-pcm.h"



#define POODLE_HP        1

#define POODLE_HP_OFF    0

#define POODLE_SPK_ON    1

#define POODLE_SPK_OFF   0



 /* audio clock in Hz - rounded from 12.235MHz */

#define POODLE_AUDIO_CLOCK 12288000



static int poodle_jack_func;

static int poodle_spk_func;



static void poodle_ext_control(struct snd_soc_codec *codec)

{

	int spk = 0;



	/* set up jack connection */

	if (poodle_jack_func == POODLE_HP) {

		/* set = unmute headphone */

		locomo_gpio_write(&poodle_locomo_device.dev,

			POODLE_LOCOMO_GPIO_MUTE_L, 1);

		locomo_gpio_write(&poodle_locomo_device.dev,

			POODLE_LOCOMO_GPIO_MUTE_R, 1);

		snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 1);

	} else {

		locomo_gpio_write(&poodle_locomo_device.dev,

			POODLE_LOCOMO_GPIO_MUTE_L, 0);

		locomo_gpio_write(&poodle_locomo_device.dev,

			POODLE_LOCOMO_GPIO_MUTE_R, 0);

		snd_soc_dapm_set_endpoint(codec, "Headphone Jack", 0);

	}



	if (poodle_spk_func == POODLE_SPK_ON)

		spk = 1;



	/* set the enpoints to their new connetion states */

	snd_soc_dapm_set_endpoint(codec, "Ext Spk", spk);



	/* signal a DAPM event */

	snd_soc_dapm_sync_endpoints(codec);

}



static int poodle_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 */

	poodle_ext_control(codec);

	return 0;

}



/* we need to unmute the HP at shutdown as the mute burns power on poodle */

static int poodle_shutdown(struct snd_pcm_substream *substream)

{

	struct snd_soc_pcm_runtime *rtd = substream->private_data;

	struct snd_soc_codec *codec = rtd->socdev->codec;



	/* set = unmute headphone */

	locomo_gpio_write(&poodle_locomo_device.dev,

		POODLE_LOCOMO_GPIO_MUTE_L, 1);

	locomo_gpio_write(&poodle_locomo_device.dev,

		POODLE_LOCOMO_GPIO_MUTE_R, 1);

	return 0;

}



static struct snd_soc_ops poodle_ops = {

	.startup = poodle_startup,

	.shutdown = poodle_shutdown,

};



static int poodle_get_jack(struct snd_kcontrol *kcontrol,

	struct snd_ctl_elem_value *ucontrol)

{

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

	return 0;

}



static int poodle_set_jack(struct snd_kcontrol *kcontrol,

	struct snd_ctl_elem_value *ucontrol)

{

	struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);



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

		return 0;



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

	poodle_ext_control(codec);

	return 1;

}



static int poodle_get_spk(struct snd_kcontrol *kcontrol,

	struct snd_ctl_elem_value *ucontrol)

{

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

	return 0;

}



static int poodle_set_spk(struct snd_kcontrol *kcontrol,

	struct snd_ctl_elem_value *ucontrol)

{

	struct snd_soc_codec *codec =  snd_kcontrol_chip(kcontrol);



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

		return 0;



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

	poodle_ext_control(codec);

	return 1;

}



static int poodle_amp_event(struct snd_soc_dapm_widget *w, int event)

{

	if (SND_SOC_DAPM_EVENT_ON(event))

		locomo_gpio_write(&poodle_locomo_device.dev,

			POODLE_LOCOMO_GPIO_AMP_ON, 0);

	else

		locomo_gpio_write(&poodle_locomo_device.dev,

			POODLE_LOCOMO_GPIO_AMP_ON, 1);



	return 0;

}



/* poodle machine dapm widgets */

static const struct snd_soc_dapm_widget wm8731_dapm_widgets[] = {

SND_SOC_DAPM_HP("Headphone Jack", NULL),

SND_SOC_DAPM_SPK("Ext Spk", poodle_amp_event),

};



/* Corgi machine audio_mapnections to the codec pins */

static const char *audio_map[][3] = {



	/* headphone connected to LHPOUT1, RHPOUT1 */

	{"Headphone Jack", NULL, "LHPOUT"},

	{"Headphone Jack", NULL, "RHPOUT"},



	/* speaker connected to LOUT, ROUT */

	{"Ext Spk", NULL, "ROUT"},

	{"Ext Spk", NULL, "LOUT"},



	{NULL, NULL, NULL},

};



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

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

static const struct soc_enum poodle_enum[] = {

	SOC_ENUM_SINGLE_EXT(2, jack_function),

	SOC_ENUM_SINGLE_EXT(2, spk_function),

};



static const snd_kcontrol_new_t wm8731_poodle_controls[] = {

	SOC_ENUM_EXT("Jack Function", poodle_enum[0], poodle_get_jack,

		poodle_set_jack),

	SOC_ENUM_EXT("Speaker Function", poodle_enum[1], poodle_get_spk,

		poodle_set_spk),

};



/*

 * Logic for a wm8731 as connected on a Sharp SL-C7x0 Device

 */

static int poodle_wm8731_init(struct snd_soc_codec *codec)

{

	int i, err;



	snd_soc_dapm_set_endpoint(codec, "LLINEIN", 0);

	snd_soc_dapm_set_endpoint(codec, "RLINEIN", 0);

	snd_soc_dapm_set_endpoint(codec, "MICIN", 1);



	/* Add poodle specific controls */

	for (i = 0; i < ARRAY_SIZE(wm8731_poodle_controls); i++) {

		err = snd_ctl_add(codec->card,

			snd_soc_cnew(&wm8731_poodle_controls[i],codec, NULL));

		if (err < 0)

			return err;

	}



	/* Add poodle specific widgets */

	for (i = 0; i < ARRAY_SIZE(wm8731_dapm_widgets); i++) {

		snd_soc_dapm_new_control(codec, &wm8731_dapm_widgets[i]);

	}



	/* Set up poodle 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;

}



static unsigned int poodle_config_sysclk(struct snd_soc_pcm_runtime *rtd,

	struct snd_soc_clock_info *info)

{

	if (info->bclk_master & SND_SOC_DAIFMT_CBS_CFS) {

		/* pxa2xx is i2s master  */

		switch (info->rate) {

		case 44100:

		case 88200:

			/* configure codec digital filters for 44.1, 88.2 */

			rtd->codec_dai->config_sysclk(rtd->codec_dai, info,

				11289600);

		break;

		default:

			/* configure codec digital filters for all other rates */

			rtd->codec_dai->config_sysclk(rtd->codec_dai, info,

				POODLE_AUDIO_CLOCK);

		break;

		}

		return rtd->cpu_dai->config_sysclk(rtd->cpu_dai, info,

			POODLE_AUDIO_CLOCK);

	} else {

		/* codec is i2s master -

		 * only configure codec DAI clock and filters */

		return rtd->codec_dai->config_sysclk(rtd->codec_dai, info,

			POODLE_AUDIO_CLOCK);

	}

}



/* poodle digital audio interface glue - connects codec <--> CPU */

static struct snd_soc_dai_link poodle_dai = {

	.name = "WM8731",

	.stream_name = "WM8731",

	.cpu_dai = &pxa_i2s_dai,

	.codec_dai = &wm8731_dai,

	.init = poodle_wm8731_init,

	.config_sysclk = poodle_config_sysclk,

};



/* poodle audio machine driver */

static struct snd_soc_machine snd_soc_machine_poodle = {

	.name = "Poodle",

	.dai_link = &poodle_dai,

	.num_links = 1,

	.ops = &poodle_ops,

};



/* poodle audio private data */

static struct wm8731_setup_data poodle_wm8731_setup = {

	.i2c_address = 0x1b,

};



/* poodle audio subsystem */

static struct snd_soc_device poodle_snd_devdata = {

	.machine = &snd_soc_machine_poodle,

	.platform = &pxa2xx_soc_platform,

	.codec_dev = &soc_codec_dev_wm8731,

	.codec_data = &poodle_wm8731_setup,

};



static struct platform_device *poodle_snd_device;



static int __init poodle_init(void)

{

	int ret;



	if (!machine_is_poodle())

		return -ENODEV;



	locomo_gpio_set_dir(&poodle_locomo_device.dev,

		POODLE_LOCOMO_GPIO_AMP_ON, 0);

	/* should we mute HP at startup - burning power ?*/

	locomo_gpio_set_dir(&poodle_locomo_device.dev,

		POODLE_LOCOMO_GPIO_MUTE_L, 0);

	locomo_gpio_set_dir(&poodle_locomo_device.dev,

		POODLE_LOCOMO_GPIO_MUTE_R, 0);



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

	if (!poodle_snd_device)

		return -ENOMEM;



	platform_set_drvdata(poodle_snd_device, &poodle_snd_devdata);

	poodle_snd_devdata.dev = &poodle_snd_device->dev;

	ret = platform_device_add(poodle_snd_device);



	if (ret)

		platform_device_put(poodle_snd_device);



	return ret;

}



static void __exit poodle_exit(void)

{

	platform_device_unregister(poodle_snd_device);

}



module_init(poodle_init);

module_exit(poodle_exit);



/* Module information */

MODULE_AUTHOR("Richard Purdie");

MODULE_DESCRIPTION("ALSA SoC Poodle");

MODULE_LICENSE("GPL");