diff options
| author | Peter Ujfalusi <peter.ujfalusi@ti.com> | 2014-07-16 15:29:21 +0300 |
|---|---|---|
| committer | Vinod Koul <vinod.koul@intel.com> | 2014-07-28 17:02:53 +0530 |
| commit | a1f146f31724b649f74185ffc817bbd983eba5e2 (patch) | |
| tree | 886b120a69296ce894f3dc7ddc46137c59084e13 /drivers/dma | |
| parent | b7f9bc5267d3517de8a7159219db96de7d12a37b (diff) | |
| download | op-kernel-dev-a1f146f31724b649f74185ffc817bbd983eba5e2.zip op-kernel-dev-a1f146f31724b649f74185ffc817bbd983eba5e2.tar.gz | |
dmaengine: edma: Support to suppress the period interrupts in cyclic mode
If the client (audio) does not request interrupts for every period we can
disable them.
With updated audio driver stack we can play audio w/o the need to process
any edma interrupts.
Signed-off-by: Peter Ujfalusi <peter.ujfalusi@ti.com>
Signed-off-by: Vinod Koul <vinod.koul@intel.com>
Diffstat (limited to 'drivers/dma')
| -rw-r--r-- | drivers/dma/edma.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/drivers/dma/edma.c b/drivers/dma/edma.c index 8e400c0..54f7408 100644 --- a/drivers/dma/edma.c +++ b/drivers/dma/edma.c @@ -718,10 +718,10 @@ static struct dma_async_tx_descriptor *edma_prep_dma_cyclic( edesc->absync = ret; /* - * Enable interrupts for every period because callback - * has to be called for every period. + * Enable period interrupt only if it is requested */ - edesc->pset[i].param.opt |= TCINTEN; + if (tx_flags & DMA_PREP_INTERRUPT) + edesc->pset[i].param.opt |= TCINTEN; } return vchan_tx_prep(&echan->vchan, &edesc->vdesc, tx_flags); |
