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ASoC: RX-51: Add basic jack detection

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This patch adds GPIO jack detection to Nokia N900/RX-51. At the moment only
SND_JACK_VIDEOOUT type is reported. More types could be reported after
getting more audio features supported and necessary drivers integrated for
implementing automated accessory detection.

Signed-off-by: Jarkko Nikula <jhnikula@gmail.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Signed-off-by: Liam Girdwood <lrg@slimlogic.co.uk>
This commit is contained in:
Jarkko Nikula 2010-06-21 14:15:00 +03:00 committed by Liam Girdwood
parent 4eb5470326
commit 8c523115ae
1 changed files with 28 additions and 1 deletions
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29
sound/soc/omap/rx51.c
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@ -27,6 +27,7 @@
#include <linux/gpio.h>
#include <linux/platform_device.h>
#include <sound/core.h>
#include <sound/jack.h>
#include <sound/pcm.h>
#include <sound/soc.h>
#include <sound/soc-dapm.h>
@ -38,6 +39,7 @@
#include "../codecs/tlv320aic3x.h"
#define RX51_TVOUT_SEL_GPIO 40
#define RX51_JACK_DETECT_GPIO 177
/*
* REVISIT: TWL4030 GPIO base in RX-51. Now statically defined to 192. This
* gpio is reserved in arch/arm/mach-omap2/board-rx51-peripherals.c
@ -194,6 +196,18 @@ static int rx51_set_jack(struct snd_kcontrol *kcontrol,
return 1;
}
static struct snd_soc_jack rx51_av_jack;
static struct snd_soc_jack_gpio rx51_av_jack_gpios[] = {
{
.gpio = RX51_JACK_DETECT_GPIO,
.name = "avdet-gpio",
.report = SND_JACK_VIDEOOUT,
.invert = 1,
.debounce_time = 200,
},
};
static const struct snd_soc_dapm_widget aic34_dapm_widgets[] = {
SND_SOC_DAPM_SPK("Ext Spk", rx51_spk_event),
SND_SOC_DAPM_MIC("DMic", NULL),
@ -228,6 +242,7 @@ static const struct snd_kcontrol_new aic34_rx51_controls[] = {
static int rx51_aic34_init(struct snd_soc_codec *codec)
{
struct snd_soc_card *card = codec->socdev->card;
int err;
/* Set up NC codec pins */
@ -250,7 +265,16 @@ static int rx51_aic34_init(struct snd_soc_codec *codec)
snd_soc_dapm_sync(codec);
return 0;
/* AV jack detection */
err = snd_soc_jack_new(card, "AV Jack",
SND_JACK_VIDEOOUT, &rx51_av_jack);
if (err)
return err;
err = snd_soc_jack_add_gpios(&rx51_av_jack,
ARRAY_SIZE(rx51_av_jack_gpios),
rx51_av_jack_gpios);
return err;
}
/* Digital audio interface glue - connects codec <--> CPU */
@ -326,6 +350,9 @@ err_gpio_tvout_sel:
static void __exit rx51_soc_exit(void)
{
snd_soc_jack_free_gpios(&rx51_av_jack, ARRAY_SIZE(rx51_av_jack_gpios),
rx51_av_jack_gpios);
platform_device_unregister(rx51_snd_device);
gpio_free(RX51_TVOUT_SEL_GPIO);
}