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ASoC: Optimise WM8996 no interrupt path

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This occurs frequently if we are in edge triggered mode as we must poll the
interrupt status register until we get no more interrupts so it's worth
the effort - it means we skip writing null acknowledgements to the chip.

Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Liam Girdwood <lrg@ti.com>
This commit is contained in:
Mark Brown 2011-08-20 19:28:59 +01:00
parent 889c85c550
commit 2fde6e80dd
1 changed files with 4 additions and 4 deletions
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8
sound/soc/codecs/wm8996.c
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@ -2408,6 +2408,9 @@ static irqreturn_t wm8996_irq(int irq, void *data)
}
irq_val &= ~snd_soc_read(codec, WM8996_INTERRUPT_STATUS_2_MASK);
if (!irq_val)
return IRQ_NONE;
snd_soc_write(codec, WM8996_INTERRUPT_STATUS_2, irq_val);
if (irq_val & (WM8996_DCS_DONE_01_EINT | WM8996_DCS_DONE_23_EINT)) {
@ -2426,10 +2429,7 @@ static irqreturn_t wm8996_irq(int irq, void *data)
if (irq_val & WM8996_MICD_EINT)
wm8996_micd(codec);
if (irq_val)
return IRQ_HANDLED;
else
return IRQ_NONE;
return IRQ_HANDLED;
}
static irqreturn_t wm8996_edge_irq(int irq, void *data)