From: Peter Ujfalusi <peter.ujfalusi@ti.com>
Date: Thu, 12 May 2011 10:04:55 +0000 (+0300)
Subject: ASoC: omap-pcm: Period wakeup disabling on OMAP2+
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=b417382419c67fda6463e02eafb8efebd5f8759e;p=linux-beck.git

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>
---

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())) {