/*
* e800-wm9712.c -- SoC audio for e800
*
* 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 <asm/mach-types.h>
#include <mach/audio.h>
#include <mach/eseries-gpio.h>
#include "../codecs/wm9712.h"
#include "pxa2xx-pcm.h"
#include "pxa2xx-ac97.h"
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",
.cpu_dai = &pxa_ac97_dai[PXA2XX_DAI_AC97_AUX],
.codec_dai = &wm9712_dai[WM9712_DAI_AC97_AUX],
},
};
static struct snd_soc_card e800 = {
.name = "Toshiba e800",
.platform = &pxa2xx_soc_platform,
.dai_link = e800_dai,
.num_links = ARRAY_SIZE(e800_dai),
};
static struct snd_soc_device e800_snd_devdata = {
.card = &e800,
.codec_dev = &soc_codec_dev_wm9712,
};
static struct platform_device *e800_snd_device;
static int __init e800_init(void)
{
int ret;
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;
platform_set_drvdata(e800_snd_device, &e800_snd_devdata);
e800_snd_devdata.dev = &e800_snd_device->dev;
ret = platform_device_add(e800_snd_device);
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;
}
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);
module_exit(e800_exit);
/* Module information */
MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
MODULE_DESCRIPTION("ALSA SoC driver for e800");
MODULE_LICENSE("GPL v2");
