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ASoC: wm8994: Add debounce to wm8994 mic detection 

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2012-05-09 19:20:59 +01:00
parent cbd71f304a
commit e9b54de420
2 changed files with 22 additions and 7 deletions
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27
sound/soc/codecs/wm8994.c
View File

@ -3059,22 +3059,20 @@ int wm8994_mic_detect(struct snd_soc_codec *codec, struct snd_soc_jack *jack,
}
EXPORT_SYMBOL_GPL(wm8994_mic_detect);
static irqreturn_t wm8994_mic_irq(int irq, void *data)
static void wm8994_mic_work(struct work_struct *work)
{
struct wm8994_priv *priv = data;
struct wm8994_priv *priv = container_of(work,
struct wm8994_priv,
mic_work.work);
struct snd_soc_codec *codec = priv->codec;
int reg;
int report;
#ifndef CONFIG_SND_SOC_WM8994_MODULE
trace_snd_soc_jack_irq(dev_name(codec->dev));
#endif
reg = snd_soc_read(codec, WM8994_INTERRUPT_RAW_STATUS_2);
if (reg < 0) {
dev_err(codec->dev, "Failed to read microphone status: %d\n",
reg);
return IRQ_HANDLED;
return;
}
dev_dbg(codec->dev, "Microphone status: %x\n", reg);
@ -3116,6 +3114,20 @@ static irqreturn_t wm8994_mic_irq(int irq, void *data)
snd_soc_jack_report(priv->micdet[1].jack, report,
SND_JACK_HEADSET | SND_JACK_BTN_0);
}
static irqreturn_t wm8994_mic_irq(int irq, void *data)
{
struct wm8994_priv *priv = data;
struct snd_soc_codec *codec = priv->codec;
#ifndef CONFIG_SND_SOC_WM8994_MODULE
trace_snd_soc_jack_irq(dev_name(codec->dev));
#endif
pm_wakeup_event(codec->dev, 300);
schedule_delayed_work(&priv->mic_work, msecs_to_jiffies(250));
return IRQ_HANDLED;
}
@ -3488,6 +3500,7 @@ static int wm8994_codec_probe(struct snd_soc_codec *codec)
wm8994->codec = codec;
mutex_init(&wm8994->accdet_lock);
INIT_DELAYED_WORK(&wm8994->mic_work, wm8994_mic_work);
for (i = 0; i < ARRAY_SIZE(wm8994->fll_locked); i++)
init_completion(&wm8994->fll_locked[i]);

2
sound/soc/codecs/wm8994.h
View File

@ -12,6 +12,7 @@
#include <sound/soc.h>
#include <linux/firmware.h>
#include <linux/completion.h>
#include <linux/workqueue.h>
#include "wm_hubs.h"
@ -127,6 +128,7 @@ struct wm8994_priv {
struct mutex accdet_lock;
struct wm8994_micdet micdet[2];
struct delayed_work mic_work;
bool mic_detecting;
bool jack_mic;
int btn_mask;