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authorPeter Ujfalusi <peter.ujfalusi@ti.com>2011-10-04 11:09:52 +0300
committerMark Brown <broonie@opensource.wolfsonmicro.com>2011-10-04 12:03:50 +0100
commitb1b6cffeb71d363693d15444c79d828153a70865 (patch)
tree80538b1cfb600ade066db8dd313612f419b7dbb6 /sound/soc/omap/omap-pcm.c
parent9cd113261b7d38b96e6edac688790bb965e23566 (diff)
ASoC: omap-pcm: Fix the no period wakeup implementation
After omap_request_dma the BLOCK_IRQ is enabled as default configuration for the channel. If we are requested for no period wakeup, we need to disable the BLOCK_IRQ in order to not receive any interrupts. Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com> Acked-by: Jarkko Nikula <jarkko.nikula@bitmer.com> Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'sound/soc/omap/omap-pcm.c')
-rw-r--r--sound/soc/omap/omap-pcm.c8
1 files changed, 8 insertions, 0 deletions
diff --git a/sound/soc/omap/omap-pcm.c b/sound/soc/omap/omap-pcm.c
index 9b5c88ac35b9..5e37ec915de2 100644
--- a/sound/soc/omap/omap-pcm.c
+++ b/sound/soc/omap/omap-pcm.c
@@ -198,6 +198,14 @@ static int omap_pcm_prepare(struct snd_pcm_substream *substream)
OMAP_DMA_LAST_IRQ | OMAP_DMA_BLOCK_IRQ);
else if (!substream->runtime->no_period_wakeup)
omap_enable_dma_irq(prtd->dma_ch, OMAP_DMA_FRAME_IRQ);
+ else {
+ /*
+ * No period wakeup:
+ * we need to disable BLOCK_IRQ, which is enabled by the omap
+ * dma core at request dma time.
+ */
+ omap_disable_dma_irq(prtd->dma_ch, OMAP_DMA_BLOCK_IRQ);
+ }
if (!(cpu_class_is_omap1())) {
omap_set_dma_src_burst_mode(prtd->dma_ch,