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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>
This commit is contained in:
Peter Ujfalusi 2014-07-16 15:29:21 +03:00 committed by Vinod Koul
parent b7f9bc5267
commit a1f146f317
1 changed files with 3 additions and 3 deletions
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6
drivers/dma/edma.c
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@ -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);