ASoC: omap-pcm: Period wakeup disabling on OMAP2+

Allow disabling ALSA period wakeup interrupts.
This can only be done on OMAP2+ (2/3/4), since there
we can chain the DMA.

Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Acked-by: Jarkko Nikula <jhnikula@gmail.com>
Signed-off-by: Liam Girdwood <lrg@ti.com>

1 files changed, 3 insertions, 2 deletions

diff --git a/sound/soc/omap/omap-pcm.c b/sound/soc/omap/omap-pcm.c
index 0c6eb30e92b9..e6a6b991d05f 100644
--- a/sound/soc/omap/omap-pcm.c
+++ b/sound/soc/omap/omap-pcm.c
@@ -37,7 +37,8 @@ static const struct snd_pcm_hardware omap_pcm_hardware = {
                                   SNDRV_PCM_INFO_MMAP_VALID |
                                   SNDRV_PCM_INFO_INTERLEAVED |
                                   SNDRV_PCM_INFO_PAUSE |
-                                  SNDRV_PCM_INFO_RESUME,
+                                  SNDRV_PCM_INFO_RESUME |
+                                  SNDRV_PCM_INFO_NO_PERIOD_WAKEUP,
         .formats                = SNDRV_PCM_FMTBIT_S16_LE |
                                   SNDRV_PCM_FMTBIT_S32_LE,
         .period_bytes_min       = 32,
@@ -195,7 +196,7 @@ static int omap_pcm_prepare(struct snd_pcm_substream *substream)
         if ((cpu_is_omap1510()))
                 omap_enable_dma_irq(prtd->dma_ch, OMAP_DMA_FRAME_IRQ |
                               OMAP_DMA_LAST_IRQ | OMAP_DMA_BLOCK_IRQ);
-        else
+        else if (!substream->runtime->no_period_wakeup)
                 omap_enable_dma_irq(prtd->dma_ch, OMAP_DMA_FRAME_IRQ);
 
         if (!(cpu_class_is_omap1())) {