diff options
| author | Jorge Eduardo Candelaria <x0107209@ti.com> | 2009-07-21 17:40:40 -0500 |
|---|---|---|
| committer | Misael Lopez Cruz <x0052729@ti.com> | 2009-07-24 04:50:09 -0500 |
| commit | da39383f924510cf4b48fc379af74149ec3deb7f (patch) | |
| tree | b89e68821a83c98e18c7e08a286cc1fa80274211 | |
| parent | a4075d7f3fa904bfe7e4af7d19ac6ff9dcb35da8 (diff) | |
ASoC: OMAP4: Add delay to DMA interrupt handler
To avoid underruns when opening a playback stream, add a delay of
300 microseconds before calling "omap_get_dma_src_pos" under the
DMA interrupt handler.
Signed-off-by: Jorge Eduardo Candelaria <x0107209@ti.com>
| -rw-r--r-- | sound/soc/omap/omap-pcm.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/sound/soc/omap/omap-pcm.c b/sound/soc/omap/omap-pcm.c index 316bbe3ccb3f..358de90d07a8 100644 --- a/sound/soc/omap/omap-pcm.c +++ b/sound/soc/omap/omap-pcm.c @@ -23,6 +23,7 @@ */ #include <linux/dma-mapping.h> +#include <linux/delay.h> #include <sound/core.h> #include <sound/pcm.h> #include <sound/pcm_params.h> @@ -32,6 +33,8 @@ #include "omap-pcm.h" #include "mcpdm.h" +#define VIRTIO_SDP4430 + static const struct snd_pcm_hardware omap_pcm_hardware = { .info = SNDRV_PCM_INFO_MMAP | SNDRV_PCM_INFO_MMAP_VALID | @@ -75,6 +78,9 @@ static void omap_pcm_dma_irq(int ch, u16 stat, void *data) spin_unlock_irqrestore(&prtd->lock, flags); } +#ifdef VIRTIO_SDP4430 + udelay(300); +#endif snd_pcm_period_elapsed(substream); } |