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ASoC: wm8994: Check jack is inserted when handling mic IRQ 

If we've got jack detection support then check that the jack is still
inserted when handling a mic IRQ in order to avoid transient reports
caused by shorts during the removal process as the two interrupts race
with each other.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
This commit is contained in:
Mark Brown 2012-12-03 15:58:55 +09:00
parent 63dd54521f
commit e874de436f
1 changed files with 12 additions and 0 deletions
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12
sound/soc/codecs/wm8994.c
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@ -3755,6 +3755,18 @@ static irqreturn_t wm8958_mic_irq(int irq, void *data)
trace_snd_soc_jack_irq(dev_name(codec->dev));
#endif
/* Avoid a transient report when the accessory is being removed */
if (wm8994->jackdet) {
reg = snd_soc_read(codec, WM1811_JACKDET_CTRL);
if (reg < 0) {
dev_err(codec->dev, "Failed to read jack status: %d\n",
reg);
} else if (!(reg & WM1811_JACKDET_LVL)) {
dev_dbg(codec->dev, "Ignoring removed jack\n");
return IRQ_HANDLED;
}
}
if (wm8994->mic_detecting)
wm8958_mic_id(codec, reg);
else