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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>
#include "../codecs/wm9705.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_pcm_runtime *rtd)
{
struct snd_soc_codec *codec = rtd->codec;
struct snd_soc_dapm_context *dapm = &codec->dapm;
snd_soc_dapm_nc_pin(dapm, "HPOUTL");
snd_soc_dapm_nc_pin(dapm, "HPOUTR");
snd_soc_dapm_nc_pin(dapm, "PHONE");
snd_soc_dapm_nc_pin(dapm, "LINEINL");
snd_soc_dapm_nc_pin(dapm, "LINEINR");
snd_soc_dapm_nc_pin(dapm, "CDINL");
snd_soc_dapm_nc_pin(dapm, "CDINR");
snd_soc_dapm_nc_pin(dapm, "PCBEEP");
snd_soc_dapm_nc_pin(dapm, "MIC2");
snd_soc_dapm_new_controls(dapm, e740_dapm_widgets,
ARRAY_SIZE(e740_dapm_widgets));
snd_soc_dapm_add_routes(dapm, audio_map, ARRAY_SIZE(audio_map));
return 0;
}
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",
.init = e740_ac97_init,
},
{
.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",
.dai_link = e740_dai,
.num_links = ARRAY_SIZE(e740_dai),
};
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);
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);
gpio_free(GPIO_E740_WM9705_nAVDD2);
gpio_free(GPIO_E740_AMP_ON);
gpio_free(GPIO_E740_MIC_ON);
}
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");
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