From e9c50aa6bd3996924b5fd87ab59289888cd5704a Mon Sep 17 00:00:00 2001 From: "oder_chiou@realtek.com" Date: Wed, 8 Nov 2017 15:04:22 +0800 Subject: [PATCH] ASoC: rt5514-spi: check irq status to schedule data copy in resume function 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 Signed-off-by: Mark Brown --- 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 d037569..36e0a58 100644 --- a/sound/soc/codecs/rt5514-spi.c +++ b/sound/soc/codecs/rt5514-spi.c @@ -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; } -- 2.7.4