diff options
| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2012-09-14 15:05:44 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@opensource.wolfsonmicro.com> | 2012-09-22 11:12:35 -0400 |
| commit | ccffa3870a7ec2b59cf051b745220c56f423d182 (patch) | |
| tree | 95c6c61c0f7ceb1b255d4b3f838ecd1d45bef863 /drivers/dma | |
| parent | c912fa913446b07147f6cbc1a8fa2fb20d2f7c36 (diff) | |
| download | linux-ccffa3870a7ec2b59cf051b745220c56f423d182.tar.bz2 | |
dmaengine: omap: Support for element mode in cyclic DMA
When src_maxburst/dst_maxburst is set to 0 by the users of cyclic DMA
(mostly audio) indicates that we should configure the omap DMA to element
sync mode instead of packet mode.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Acked-by: Vinod Koul <vinod.koul@linux.intel.com>
Tested-by: Janusz Krzysztofik <jkrzyszt@tis.icnet.pl>
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/omap-dma.c | 5 |
1 files changed, 4 insertions, 1 deletions
diff --git a/drivers/dma/omap-dma.c b/drivers/dma/omap-dma.c index ae0561826137..b77a40db2856 100644 --- a/drivers/dma/omap-dma.c +++ b/drivers/dma/omap-dma.c @@ -413,7 +413,10 @@ static struct dma_async_tx_descriptor *omap_dma_prep_dma_cyclic( d->dev_addr = dev_addr; d->fi = burst; d->es = es; - d->sync_mode = OMAP_DMA_SYNC_PACKET; + if (burst) + d->sync_mode = OMAP_DMA_SYNC_PACKET; + else + d->sync_mode = OMAP_DMA_SYNC_ELEMENT; d->sync_type = sync_type; d->periph_port = OMAP_DMA_PORT_MPUI; d->sg[0].addr = buf_addr; |