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ASoC: machine support for Toshiba e740 PDA 

This patch provides suupport for the wm9705 AC97 codec on the Toshiba e740.

Note:
The e740 has a hard headphone switch that turns the speaker off and is not
software detectable or controlable. Also both headphone and speaker amps
share a common output enable.

Signed-off-by: Ian Molton <ian@mnementh.co.uk>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Ian Molton 2009-01-17 15:11:06 +00:00 committed by Mark Brown
parent 2c782f5981
commit 28796eaf80
5 changed files with 234 additions and 0 deletions
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5
arch/arm/mach-pxa/e740.c
View File

@ -135,6 +135,11 @@ static unsigned long e740_pin_config[] __initdata = {
/* IrDA */
GPIO38_GPIO | MFP_LPM_DRIVE_HIGH,
/* Audio power control */
GPIO16_GPIO, /* AC97 codec AVDD2 supply (analogue power) */
GPIO40_GPIO, /* Mic amp power */
GPIO41_GPIO, /* Headphone amp power */
/* PC Card */
GPIO8_GPIO, /* CD0 */
GPIO44_GPIO, /* CD1 */

5
arch/arm/mach-pxa/include/mach/eseries-gpio.h
View File

@ -45,6 +45,11 @@
/* e7xx IrDA power control */
#define GPIO_E7XX_IR_OFF 38
/* e740 audio control GPIOs */
#define GPIO_E740_WM9705_nAVDD2 16
#define GPIO_E740_MIC_ON 40
#define GPIO_E740_AMP_ON 41
/* e750 audio control GPIOs */
#define GPIO_E750_HP_AMP_OFF 4
#define GPIO_E750_SPK_AMP_OFF 7

9
sound/soc/pxa/Kconfig
View File

@ -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_E740
tristate "SoC AC97 Audio support for e740"
depends on SND_PXA2XX_SOC && MACH_E740
select SND_SOC_WM9705
select SND_PXA2XX_SOC_AC97
help
Say Y if you want to add support for SoC audio on the
toshiba e740 PDA
config SND_PXA2XX_SOC_E750
tristate "SoC AC97 Audio support for e750"
depends on SND_PXA2XX_SOC && MACH_E750

2
sound/soc/pxa/Makefile
View File

@ -13,6 +13,7 @@ obj-$(CONFIG_SND_PXA_SOC_SSP) += snd-soc-pxa-ssp.o
snd-soc-corgi-objs := corgi.o
snd-soc-poodle-objs := poodle.o
snd-soc-tosa-objs := tosa.o
snd-soc-e740-objs := e740_wm9705.o
snd-soc-e750-objs := e750_wm9705.o
snd-soc-e800-objs := e800_wm9712.o
snd-soc-spitz-objs := spitz.o
@ -23,6 +24,7 @@ snd-soc-zylonite-objs := zylonite.o
obj-$(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-$(CONFIG_SND_PXA2XX_SOC_E740) += snd-soc-e740.o
obj-$(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

213
sound/soc/pxa/e740_wm9705.c Normal file
View File

@ -0,0 +1,213 @@
/*
* e740-wm9705.c -- SoC audio for e740
*
* 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"
#define E740_AUDIO_OUT 1
#define E740_AUDIO_IN 2
static int e740_audio_power;
static void e740_sync_audio_power(int status)
{
gpio_set_value(GPIO_E740_WM9705_nAVDD2, !status);
gpio_set_value(GPIO_E740_AMP_ON, (status & E740_AUDIO_OUT) ? 1 : 0);
gpio_set_value(GPIO_E740_MIC_ON, (status & E740_AUDIO_IN) ? 1 : 0);
}
static int e740_mic_amp_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
if (event & SND_SOC_DAPM_PRE_PMU)
e740_audio_power |= E740_AUDIO_IN;
else if (event & SND_SOC_DAPM_POST_PMD)
e740_audio_power &= ~E740_AUDIO_IN;
e740_sync_audio_power(e740_audio_power);
return 0;
}
static int e740_output_amp_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
if (event & SND_SOC_DAPM_PRE_PMU)
e740_audio_power |= E740_AUDIO_OUT;
else if (event & SND_SOC_DAPM_POST_PMD)
e740_audio_power &= ~E740_AUDIO_OUT;
e740_sync_audio_power(e740_audio_power);
return 0;
}
static const struct snd_soc_dapm_widget e740_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("Output Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
e740_output_amp_event, SND_SOC_DAPM_PRE_PMU |
SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_PGA_E("Mic Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
e740_mic_amp_event, SND_SOC_DAPM_PRE_PMU |
SND_SOC_DAPM_POST_PMD),
};
static const struct snd_soc_dapm_route audio_map[] = {
{"Output Amp", NULL, "LOUT"},
{"Output Amp", NULL, "ROUT"},
{"Output Amp", NULL, "MONOOUT"},
{"Speaker", NULL, "Output Amp"},
{"Headphone Jack", NULL, "Output Amp"},
{"MIC1", NULL, "Mic Amp"},
{"Mic Amp", NULL, "Mic (Internal)"},
};
static int e740_ac97_init(struct snd_soc_codec *codec)
{
snd_soc_dapm_nc_pin(codec, "HPOUTL");
snd_soc_dapm_nc_pin(codec, "HPOUTR");
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, e740_dapm_widgets,
ARRAY_SIZE(e740_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 e740_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 = e740_ac97_init,
},
{
.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 e740 = {
.name = "Toshiba e740",
.platform = &pxa2xx_soc_platform,
.dai_link = e740_dai,
.num_links = ARRAY_SIZE(e740_dai),
};
static struct snd_soc_device e740_snd_devdata = {
.card = &e740,
.codec_dev = &soc_codec_dev_wm9705,
};
static struct platform_device *e740_snd_device;
static int __init e740_init(void)
{
int ret;
if (!machine_is_e740())
return -ENODEV;
ret = gpio_request(GPIO_E740_MIC_ON, "Mic amp");
if (ret)
return ret;
ret = gpio_request(GPIO_E740_AMP_ON, "Output amp");
if (ret)
goto free_mic_amp_gpio;
ret = gpio_request(GPIO_E740_WM9705_nAVDD2, "Audio power");
if (ret)
goto free_op_amp_gpio;
/* Disable audio */
ret = gpio_direction_output(GPIO_E740_MIC_ON, 0);
if (ret)
goto free_apwr_gpio;
ret = gpio_direction_output(GPIO_E740_AMP_ON, 0);
if (ret)
goto free_apwr_gpio;
ret = gpio_direction_output(GPIO_E740_WM9705_nAVDD2, 1);
if (ret)
goto free_apwr_gpio;
e740_snd_device = platform_device_alloc("soc-audio", -1);
if (!e740_snd_device) {
ret = -ENOMEM;
goto free_apwr_gpio;
}
platform_set_drvdata(e740_snd_device, &e740_snd_devdata);
e740_snd_devdata.dev = &e740_snd_device->dev;
ret = platform_device_add(e740_snd_device);
if (!ret)
return 0;
/* Fail gracefully */
platform_device_put(e740_snd_device);
free_apwr_gpio:
gpio_free(GPIO_E740_WM9705_nAVDD2);
free_op_amp_gpio:
gpio_free(GPIO_E740_AMP_ON);
free_mic_amp_gpio:
gpio_free(GPIO_E740_MIC_ON);
return ret;
}
static void __exit e740_exit(void)
{
platform_device_unregister(e740_snd_device);
}
module_init(e740_init);
module_exit(e740_exit);
/* Module information */
MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
MODULE_DESCRIPTION("ALSA SoC driver for e740");
MODULE_LICENSE("GPL v2");