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/*
* Copyright (C) 2009, Lars-Peter Clausen <lars@metafoo.de>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 675 Mass Ave, Cambridge, MA 02139, USA.
*
*/
#include <linux/module.h>
#include <linux/moduleparam.h>
#include <linux/timer.h>
#include <linux/interrupt.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <linux/gpio/consumer.h>
struct qi_lb60 {
struct gpio_desc *snd_gpio;
struct gpio_desc *amp_gpio;
};
static int qi_lb60_spk_event(struct snd_soc_dapm_widget *widget,
struct snd_kcontrol *ctrl, int event)
{
struct qi_lb60 *qi_lb60 = snd_soc_card_get_drvdata(widget->dapm->card);
int on = !SND_SOC_DAPM_EVENT_OFF(event);
gpiod_set_value_cansleep(qi_lb60->snd_gpio, on);
gpiod_set_value_cansleep(qi_lb60->amp_gpio, on);
return 0;
}
static const struct snd_soc_dapm_widget qi_lb60_widgets[] = {
SND_SOC_DAPM_SPK("Speaker", qi_lb60_spk_event),
SND_SOC_DAPM_MIC("Mic", NULL),
};
static const struct snd_soc_dapm_route qi_lb60_routes[] = {
{"Mic", NULL, "MIC"},
{"Speaker", NULL, "LOUT"},
{"Speaker", NULL, "ROUT"},
};
static struct snd_soc_dai_link qi_lb60_dai = {
.name = "jz4740",
.stream_name = "jz4740",
.cpu_dai_name = "jz4740-i2s",
.platform_name = "jz4740-i2s",
.codec_dai_name = "jz4740-hifi",
.codec_name = "jz4740-codec",
.dai_fmt = SND_SOC_DAIFMT_I2S | SND_SOC_DAIFMT_NB_NF |
SND_SOC_DAIFMT_CBM_CFM,
};
static struct snd_soc_card qi_lb60_card = {
.name = "QI LB60",
.owner = THIS_MODULE,
.dai_link = &qi_lb60_dai,
.num_links = 1,
.dapm_widgets = qi_lb60_widgets,
.num_dapm_widgets = ARRAY_SIZE(qi_lb60_widgets),
.dapm_routes = qi_lb60_routes,
.num_dapm_routes = ARRAY_SIZE(qi_lb60_routes),
.fully_routed = true,
};
static int qi_lb60_probe(struct platform_device *pdev)
{
struct qi_lb60 *qi_lb60;
struct snd_soc_card *card = &qi_lb60_card;
int ret;
qi_lb60 = devm_kzalloc(&pdev->dev, sizeof(*qi_lb60), GFP_KERNEL);
if (!qi_lb60)
return -ENOMEM;
qi_lb60->snd_gpio = devm_gpiod_get(&pdev->dev, "snd");
if (IS_ERR(qi_lb60->snd_gpio))
return PTR_ERR(qi_lb60->snd_gpio);
ret = gpiod_direction_output(qi_lb60->snd_gpio, 0);
if (ret)
return ret;
qi_lb60->amp_gpio = devm_gpiod_get(&pdev->dev, "amp");
if (IS_ERR(qi_lb60->amp_gpio))
return PTR_ERR(qi_lb60->amp_gpio);
ret = gpiod_direction_output(qi_lb60->amp_gpio, 0);
if (ret)
return ret;
card->dev = &pdev->dev;
snd_soc_card_set_drvdata(card, qi_lb60);
return devm_snd_soc_register_card(&pdev->dev, card);
}
static struct platform_driver qi_lb60_driver = {
.driver = {
.name = "qi-lb60-audio",
.owner = THIS_MODULE,
},
.probe = qi_lb60_probe,
};
module_platform_driver(qi_lb60_driver);
MODULE_AUTHOR("Lars-Peter Clausen <lars@metafoo.de>");
MODULE_DESCRIPTION("ALSA SoC QI LB60 Audio support");
MODULE_LICENSE("GPL v2");
MODULE_ALIAS("platform:qi-lb60-audio");
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