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ASoC: machine driver for Toshiba e800

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This patch adds support for the wm9712 ac97 codec as used in the Toshiba e800
PDA. It includes support for powering up / down the external headphone and
speaker amplifiers on this machine.

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 2009-01-08 21:16:05 +00:00 committed by Mark Brown
parent a7e2e735dc
commit 0465c7aa6f
2 changed files with 107 additions and 14 deletions
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5
arch/arm/mach-pxa/include/mach/eseries-gpio.h
View File

@ -50,6 +50,11 @@
#define GPIO_E750_SPK_AMP_OFF 7
#define GPIO_E750_HP_DETECT 37
/* e800 audio control GPIOs */
#define GPIO_E800_HP_DETECT 81
#define GPIO_E800_HP_AMP_OFF 82
#define GPIO_E800_SPK_AMP_ON 83
/* ASIC related GPIOs */
#define GPIO_ESERIES_TMIO_IRQ 5
#define GPIO_ESERIES_TMIO_PCLR 19

102
sound/soc/pxa/e800_wm9712.c
View File

@ -1,8 +1,6 @@
/*
* e800-wm9712.c -- SoC audio for e800
*
* Based on tosa.c
*
* Copyright 2007 (c) Ian Molton <spyro@f2s.com>
*
* This program is free software; you can redistribute it and/or modify it
@ -13,25 +11,90 @@
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/device.h>
#include <linux/gpio.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/pxa-regs.h>
#include <mach/hardware.h>
#include <mach/audio.h>
#include <mach/eseries-gpio.h>
#include <asm/mach-types.h>
#include "../codecs/wm9712.h"
#include "pxa2xx-pcm.h"
#include "pxa2xx-ac97.h"
static struct snd_soc_card e800;
static int e800_spk_amp_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
if (event & SND_SOC_DAPM_PRE_PMU)
gpio_set_value(GPIO_E800_SPK_AMP_ON, 1);
else if (event & SND_SOC_DAPM_POST_PMD)
gpio_set_value(GPIO_E800_SPK_AMP_ON, 0);
return 0;
}
static int e800_hp_amp_event(struct snd_soc_dapm_widget *w,
struct snd_kcontrol *kcontrol, int event)
{
if (event & SND_SOC_DAPM_PRE_PMU)
gpio_set_value(GPIO_E800_HP_AMP_OFF, 0);
else if (event & SND_SOC_DAPM_POST_PMD)
gpio_set_value(GPIO_E800_HP_AMP_OFF, 1);
return 0;
}
static const struct snd_soc_dapm_widget e800_dapm_widgets[] = {
SND_SOC_DAPM_HP("Headphone Jack", NULL),
SND_SOC_DAPM_MIC("Mic (Internal1)", NULL),
SND_SOC_DAPM_MIC("Mic (Internal2)", NULL),
SND_SOC_DAPM_SPK("Speaker", NULL),
SND_SOC_DAPM_PGA_E("Headphone Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
e800_hp_amp_event, SND_SOC_DAPM_PRE_PMU |
SND_SOC_DAPM_POST_PMD),
SND_SOC_DAPM_PGA_E("Speaker Amp", SND_SOC_NOPM, 0, 0, NULL, 0,
e800_spk_amp_event, SND_SOC_DAPM_PRE_PMU |
SND_SOC_DAPM_POST_PMD),
};
static const struct snd_soc_dapm_route audio_map[] = {
{"Headphone Jack", NULL, "HPOUTL"},
{"Headphone Jack", NULL, "HPOUTR"},
{"Headphone Jack", NULL, "Headphone Amp"},
{"Speaker Amp", NULL, "MONOOUT"},
{"Speaker", NULL, "Speaker Amp"},
{"MIC1", NULL, "Mic (Internal1)"},
{"MIC2", NULL, "Mic (Internal2)"},
};
static int e800_ac97_init(struct snd_soc_codec *codec)
{
snd_soc_dapm_new_controls(codec, e800_dapm_widgets,
ARRAY_SIZE(e800_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 e800_dai[] = {
{
.name = "AC97",
.stream_name = "AC97 HiFi",
.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_HIFI],
.codec_dai = &wm9712_dai[WM9712_DAI_AC97_HIFI],
.init = e800_ac97_init,
},
{
.name = "AC97 Aux",
.stream_name = "AC97 Aux",
@ -61,6 +124,22 @@ static int __init e800_init(void)
if (!machine_is_e800())
return -ENODEV;
ret = gpio_request(GPIO_E800_HP_AMP_OFF, "Headphone amp");
if (ret)
return ret;
ret = gpio_request(GPIO_E800_SPK_AMP_ON, "Speaker amp");
if (ret)
goto free_hp_amp_gpio;
ret = gpio_direction_output(GPIO_E800_HP_AMP_OFF, 1);
if (ret)
goto free_spk_amp_gpio;
ret = gpio_direction_output(GPIO_E800_SPK_AMP_ON, 1);
if (ret)
goto free_spk_amp_gpio;
e800_snd_device = platform_device_alloc("soc-audio", -1);
if (!e800_snd_device)
return -ENOMEM;
@ -69,8 +148,15 @@ static int __init e800_init(void)
e800_snd_devdata.dev = &e800_snd_device->dev;
ret = platform_device_add(e800_snd_device);
if (ret)
if (!ret)
return 0;
/* Fail gracefully */
platform_device_put(e800_snd_device);
free_spk_amp_gpio:
gpio_free(GPIO_E800_SPK_AMP_ON);
free_hp_amp_gpio:
gpio_free(GPIO_E800_HP_AMP_OFF);
return ret;
}
@ -78,6 +164,8 @@ static int __init e800_init(void)
static void __exit e800_exit(void)
{
platform_device_unregister(e800_snd_device);
gpio_free(GPIO_E800_SPK_AMP_ON);
gpio_free(GPIO_E800_HP_AMP_OFF);
}
module_init(e800_init);
@ -86,4 +174,4 @@ module_exit(e800_exit);
/* Module information */
MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
MODULE_DESCRIPTION("ALSA SoC driver for e800");
MODULE_LICENSE("GPL");
MODULE_LICENSE("GPL v2");