/*
* 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/initval.h>
#include <sound/ac97_codec.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_pcm_runtime *rtd)
{
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_dapm_context *dapm = &codec->dapm;
unsigned short reg;
/* Add mioa701 specific widgets */
snd_soc_dapm_new_controls(dapm, ARRAY_AND_SIZE(mioa701_dapm_widgets));
/* Set up mioa701 specific audio path audio_mapnects */
snd_soc_dapm_add_routes(dapm, ARRAY_AND_SIZE(audio_map));
/* Prepare GPIO8 for rear speaker amplifier */
reg = codec->driver->read(codec, AC97_GPIO_CFG);
codec->driver->write(codec, AC97_GPIO_CFG, reg | 0x0100);
/* Prepare MIC input */
reg = codec->driver->read(codec, AC97_3D_CONTROL);
codec->driver->write(codec, AC97_3D_CONTROL, reg | 0xc000);
snd_soc_dapm_enable_pin(dapm, "Front Speaker");
snd_soc_dapm_enable_pin(dapm, "Rear Speaker");
snd_soc_dapm_enable_pin(dapm, "Front Mic");
snd_soc_dapm_enable_pin(dapm, "GSM Line In");
snd_soc_dapm_enable_pin(dapm, "GSM Line Out");
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_name = "pxa2xx-ac97",
.codec_dai_name = "wm9713-hifi",
.codec_name = "wm9713-codec",
.init = mioa701_wm9713_init,
.platform_name = "pxa-pcm-audio",
.ops = &mioa701_ops,
},
{
.name = "AC97 Aux",
.stream_name = "AC97 Aux",
.cpu_dai_name = "pxa2xx-ac97-aux",
.codec_dai_name ="wm9713-aux",
.codec_name = "wm9713-codec",
.platform_name = "pxa-pcm-audio",
.ops = &mioa701_ops,
},
};
static struct snd_soc_card mioa701 = {
.name = "MioA701",
.owner = THIS_MODULE,
.dai_link = mioa701_dai,
.num_links = ARRAY_SIZE(mioa701_dai),
};
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);
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,
},
};
module_platform_driver(mioa701_wm9713_driver);
/* Module information */
MODULE_AUTHOR("Robert Jarzmik (rjarzmik@free.fr)");
MODULE_DESCRIPTION("ALSA SoC WM9713 MIO A701");
MODULE_LICENSE("GPL");