Commit 8f0dc655 authored by Robert Jarzmik's avatar Robert Jarzmik Committed by Mark Brown
Browse files

ASoC: Add initial support of Mitac mioa701 device SoC. 



This machine driver enables sound functions on Mitac mio
a701 smartphone. Build upon ASoC v1, it handles :
 - rear speaker
 - front speaker
 - microphone
 - GSM

A global "Mio Mode" switch is not yet provided to cope with
audio path setup. As balance on audio chip line is no more
assured, an incorrect setup can produce a lot of heat and
even fry the battery behind the wm9713 and the speaker
amplifier.

It doesn't cope with :
 - headset jack
 - mio master mode
 - master volume control

This driver is backported from ASoc v2, and amputated from
scenario setups and master volume control.

[Minor mods for terminology in comments -- broonie]

Signed-off-by: default avatarRobert Jarzmik <robert.jarzmik@free.fr>
Signed-off-by: default avatarMark Brown <broonie@opensource.wolfsonmicro.com>
parent e255265b

sound/soc/pxa/Kconfig

+9 −0
Original line number Diff line number Diff line
@@ -115,3 +115,12 @@ config SND_SOC_ZYLONITE 
	help

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

	  Marvell Zylonite reference platform.



config SND_PXA2XX_SOC_MIOA701

        tristate "SoC Audio support for MIO A701"

        depends on SND_PXA2XX_SOC && MACH_MIOA701

        select SND_PXA2XX_SOC_AC97

        select SND_SOC_WM9713

        help

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

          MIO A701.

sound/soc/pxa/Makefile

+2 −0
Original line number Diff line number Diff line
@@ -20,6 +20,7 @@ snd-soc-spitz-objs := spitz.o 
snd-soc-em-x270-objs := em-x270.o

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

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

snd-soc-mioa701-objs := mioa701_wm9713.o



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

obj-$(CONFIG_SND_PXA2XX_SOC_POODLE) += snd-soc-poodle.o
@@ -30,4 +31,5 @@ obj-$(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

obj-$(CONFIG_SND_PXA2XX_SOC_MIOA701) += snd-soc-mioa701.o

obj-$(CONFIG_SND_SOC_ZYLONITE) += snd-soc-zylonite.o

sound/soc/pxa/mioa701_wm9713.c

0 → 100644
+250 −0
Original line number Diff line number Diff line 
/*

 * Handles the Mitac mioa701 SoC system

 *

 * Copyright (C) 2008 Robert Jarzmik

 *

 * 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 in version 2 of the License.

 *

 * 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., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA

 *

 * This is a little schema of the sound interconnections :

 *

 *    Sagem X200                 Wolfson WM9713

 *    +--------+             +-------------------+      Rear Speaker

 *    |        |             |                   |           /-+

 *    |        +--->----->---+MONOIN         SPKL+--->----+-+  |

 *    |  GSM   |             |                   |        | |  |

 *    |        +--->----->---+PCBEEP         SPKR+--->----+-+  |

 *    |  CHIP  |             |                   |           \-+

 *    |        +---<-----<---+MONO               |

 *    |        |             |                   |      Front Speaker

 *    +--------+             |                   |           /-+

 *                           |                HPL+--->----+-+  |

 *                           |                   |        | |  |

 *                           |               OUT3+--->----+-+  |

 *                           |                   |           \-+

 *                           |                   |

 *                           |                   |     Front Micro

 *                           |                   |         +

 *                           |               MIC1+-----<--+o+

 *                           |                   |         +

 *                           +-------------------+        ---

 */



#include <linux/module.h>

#include <linux/moduleparam.h>

#include <linux/platform_device.h>



#include <asm/mach-types.h>

#include <mach/audio.h>



#include <sound/core.h>

#include <sound/pcm.h>

#include <sound/soc.h>

#include <sound/soc-dapm.h>

#include <sound/initval.h>

#include <sound/ac97_codec.h>



#include "pxa2xx-pcm.h"

#include "pxa2xx-ac97.h"

#include "../codecs/wm9713.h"



#define ARRAY_AND_SIZE(x)	(x), ARRAY_SIZE(x)



#define AC97_GPIO_PULL		0x58



/* Use GPIO8 for rear speaker amplifier */

static int rear_amp_power(struct snd_soc_codec *codec, int power)

{

	unsigned short reg;



	if (power) {

		reg = snd_soc_read(codec, AC97_GPIO_CFG);

		snd_soc_write(codec, AC97_GPIO_CFG, reg | 0x0100);

		reg = snd_soc_read(codec, AC97_GPIO_PULL);

		snd_soc_write(codec, AC97_GPIO_PULL, reg | (1<<15));

	} else {

		reg = snd_soc_read(codec, AC97_GPIO_CFG);

		snd_soc_write(codec, AC97_GPIO_CFG, reg & ~0x0100);

		reg = snd_soc_read(codec, AC97_GPIO_PULL);

		snd_soc_write(codec, AC97_GPIO_PULL, reg & ~(1<<15));

	}



	return 0;

}



static int rear_amp_event(struct snd_soc_dapm_widget *widget,

			  struct snd_kcontrol *kctl, int event)

{

	struct snd_soc_codec *codec = widget->codec;



	return rear_amp_power(codec, SND_SOC_DAPM_EVENT_ON(event));

}



/* mioa701 machine dapm widgets */

static const struct snd_soc_dapm_widget mioa701_dapm_widgets[] = {

	SND_SOC_DAPM_SPK("Front Speaker", NULL),

	SND_SOC_DAPM_SPK("Rear Speaker", rear_amp_event),

	SND_SOC_DAPM_MIC("Headset", NULL),

	SND_SOC_DAPM_LINE("GSM Line Out", NULL),

	SND_SOC_DAPM_LINE("GSM Line In", NULL),

	SND_SOC_DAPM_MIC("Headset Mic", NULL),

	SND_SOC_DAPM_MIC("Front Mic", NULL),

};



static const struct snd_soc_dapm_route audio_map[] = {

	/* Call Mic */

	{"Mic Bias", NULL, "Front Mic"},

	{"MIC1", NULL, "Mic Bias"},



	/* Headset Mic */

	{"LINEL", NULL, "Headset Mic"},

	{"LINER", NULL, "Headset Mic"},



	/* GSM Module */

	{"MONOIN", NULL, "GSM Line Out"},

	{"PCBEEP", NULL, "GSM Line Out"},

	{"GSM Line In", NULL, "MONO"},



	/* headphone connected to HPL, HPR */

	{"Headset", NULL, "HPL"},

	{"Headset", NULL, "HPR"},



	/* front speaker connected to HPL, OUT3 */

	{"Front Speaker", NULL, "HPL"},

	{"Front Speaker", NULL, "OUT3"},



	/* rear speaker connected to SPKL, SPKR */

	{"Rear Speaker", NULL, "SPKL"},

	{"Rear Speaker", NULL, "SPKR"},

};



static int mioa701_wm9713_init(struct snd_soc_codec *codec)

{

	unsigned short reg;



	/* Add mioa701 specific widgets */

	snd_soc_dapm_new_controls(codec, ARRAY_AND_SIZE(mioa701_dapm_widgets));



	/* Set up mioa701 specific audio path audio_mapnects */

	snd_soc_dapm_add_routes(codec, ARRAY_AND_SIZE(audio_map));



	/* Prepare GPIO8 for rear speaker amplifier */

	reg = codec->read(codec, AC97_GPIO_CFG);

	codec->write(codec, AC97_GPIO_CFG, reg | 0x0100);



	/* Prepare MIC input */

	reg = codec->read(codec, AC97_3D_CONTROL);

	codec->write(codec, AC97_3D_CONTROL, reg | 0xc000);



	snd_soc_dapm_enable_pin(codec, "Front Speaker");

	snd_soc_dapm_enable_pin(codec, "Rear Speaker");

	snd_soc_dapm_enable_pin(codec, "Front Mic");

	snd_soc_dapm_enable_pin(codec, "GSM Line In");

	snd_soc_dapm_enable_pin(codec, "GSM Line Out");

	snd_soc_dapm_sync(codec);



	return 0;

}



static struct snd_soc_ops mioa701_ops;



static struct snd_soc_dai_link mioa701_dai[] = {

	{

		.name = "AC97",

		.stream_name = "AC97 HiFi",

		.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],

		.codec_dai = &wm9713_dai[WM9713_DAI_AC97_HIFI],

		.init = mioa701_wm9713_init,

		.ops = &mioa701_ops,

	},

	{

		.name = "AC97 Aux",

		.stream_name = "AC97 Aux",

		.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],

		.codec_dai = &wm9713_dai[WM9713_DAI_AC97_AUX],

		.ops = &mioa701_ops,

	},

};



static struct snd_soc_card mioa701 = {

	.name = "MioA701",

	.platform = &pxa2xx_soc_platform,

	.dai_link = mioa701_dai,

	.num_links = ARRAY_SIZE(mioa701_dai),

};



static struct snd_soc_device mioa701_snd_devdata = {

	.card = &mioa701,

	.codec_dev = &soc_codec_dev_wm9713,

};



static struct platform_device *mioa701_snd_device;



static int mioa701_wm9713_probe(struct platform_device *pdev)

{

	int ret;



	if (!machine_is_mioa701())

		return -ENODEV;



	dev_warn(&pdev->dev, "Be warned that incorrect mixers/muxes setup will"

		 "lead to overheating and possible destruction of your device."

		 "Do not use without a good knowledge of mio's board design!\n");



	mioa701_snd_device = platform_device_alloc("soc-audio", -1);

	if (!mioa701_snd_device)

		return -ENOMEM;



	platform_set_drvdata(mioa701_snd_device, &mioa701_snd_devdata);

	mioa701_snd_devdata.dev = &mioa701_snd_device->dev;



	ret = platform_device_add(mioa701_snd_device);

	if (!ret)

		return 0;



	platform_device_put(mioa701_snd_device);

	return ret;

}



static int __devexit mioa701_wm9713_remove(struct platform_device *pdev)

{

	platform_device_unregister(mioa701_snd_device);

	return 0;

}



static struct platform_driver mioa701_wm9713_driver = {

	.probe		= mioa701_wm9713_probe,

	.remove		= __devexit_p(mioa701_wm9713_remove),

	.driver		= {

		.name		= "mioa701-wm9713",

		.owner		= THIS_MODULE,

	},

};



static int __init mioa701_asoc_init(void)

{

	return platform_driver_register(&mioa701_wm9713_driver);

}



static void __exit mioa701_asoc_exit(void)

{

	platform_driver_unregister(&mioa701_wm9713_driver);

}



module_init(mioa701_asoc_init);

module_exit(mioa701_asoc_exit);



/* Module information */

MODULE_AUTHOR("Robert Jarzmik (rjarzmik@free.fr)");

MODULE_DESCRIPTION("ALSA SoC WM9713 MIO A701");

MODULE_LICENSE("GPL");

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