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 --- sound/soc/codecs/rt5514-spi.c | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/sound/soc/codecs/rt5514-spi.c b/sound/soc/codecs/rt5514-spi.c index 0c0e209..c722f33 100644 --- a/sound/soc/codecs/rt5514-spi.c +++ b/sound/soc/codecs/rt5514-spi.c @@ -465,11 +465,21 @@ 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; }