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ASoC: rt5514-spi: check irq status to schedule data copy in resume function

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For wake on voice use case, we need to copy data from DSP buffer
to PCM stream when system wakes up by voice. However the edge
triggered IRQ could be missed when system wakes up, in that case
the irq function will not be called. If the substream was constructed
beforce suspend, we will schedule data copy in resume function.

Signed-off-by: Oder Chiou <oder_chiou@realtek.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
oder_chiou@realtek.com 2017-11-08 15:04:22 +08:00 committed by Mark Brown
parent 58f1c07d23
commit e9c50aa6bd
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1 changed files with 10 additions and 0 deletions
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10
sound/soc/codecs/rt5514-spi.c
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@ -473,11 +473,21 @@ static int rt5514_suspend(struct device *dev)
static int rt5514_resume(struct device *dev)
{
struct snd_soc_platform *platform = snd_soc_lookup_platform(dev);
struct rt5514_dsp *rt5514_dsp =
snd_soc_platform_get_drvdata(platform);
int irq = to_spi_device(dev)->irq;
u8 buf[8];
if (device_may_wakeup(dev))
disable_irq_wake(irq);
if (rt5514_dsp->substream) {
rt5514_spi_burst_read(RT5514_IRQ_CTRL, (u8 *)&buf, sizeof(buf));
if (buf[0] & RT5514_IRQ_STATUS_BIT)
rt5514_schedule_copy(rt5514_dsp);
}
return 0;
}