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/*
* 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 <mach/audio.h>
#include <mach/eseries-gpio.h>
#include <asm/mach-types.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 struct snd_soc_dai_link e740_dai[] = {
{
.name = "AC97",
.stream_name = "AC97 HiFi",
.cpu_dai_name = "pxa2xx-ac97",
.codec_dai_name = "wm9705-hifi",
.platform_name = "pxa-pcm-audio",
.codec_name = "wm9705-codec",
},
{
.name = "AC97 Aux",
.stream_name = "AC97 Aux",
.cpu_dai_name = "pxa2xx-ac97-aux",
.codec_dai_name = "wm9705-aux",
.platform_name = "pxa-pcm-audio",
.codec_name = "wm9705-codec",
},
};
static struct snd_soc_card e740 = {
.name = "Toshiba e740",
.owner = THIS_MODULE,
.dai_link = e740_dai,
.num_links = ARRAY_SIZE(e740_dai),
.dapm_widgets = e740_dapm_widgets,
.num_dapm_widgets = ARRAY_SIZE(e740_dapm_widgets),
.dapm_routes = audio_map,
.num_dapm_routes = ARRAY_SIZE(audio_map),
.fully_routed = true,
};
static struct gpio e740_audio_gpios[] = {
{ GPIO_E740_MIC_ON, GPIOF_OUT_INIT_LOW, "Mic amp" },
{ GPIO_E740_AMP_ON, GPIOF_OUT_INIT_LOW, "Output amp" },
{ GPIO_E740_WM9705_nAVDD2, GPIOF_OUT_INIT_HIGH, "Audio power" },
};
static int e740_probe(struct platform_device *pdev)
{
struct snd_soc_card *card = &e740;
int ret;
ret = gpio_request_array(e740_audio_gpios,
ARRAY_SIZE(e740_audio_gpios));
if (ret)
return ret;
card->dev = &pdev->dev;
ret = devm_snd_soc_register_card(&pdev->dev, card);
if (ret) {
dev_err(&pdev->dev, "snd_soc_register_card() failed: %d\n",
ret);
gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
}
return ret;
}
static int e740_remove(struct platform_device *pdev)
{
gpio_free_array(e740_audio_gpios, ARRAY_SIZE(e740_audio_gpios));
return 0;
}
static struct platform_driver e740_driver = {
.driver = {
.name = "e740-audio",
.pm = &snd_soc_pm_ops,
},
.probe = e740_probe,
.remove = e740_remove,
};
module_platform_driver(e740_driver);
/* Module information */
MODULE_AUTHOR("Ian Molton <spyro@f2s.com>");
MODULE_DESCRIPTION("ALSA SoC driver for e740");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:e740-audio");
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