Commit a1f146f3 authored Jul 16, 2014 by Peter Ujfalusi Committed by Vinod Koul Jul 28, 2014

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>

parent b7f9bc52

drivers/dma/edma.c

+3 −3

Original line number	Diff line number	Diff line
		@@ -718,9 +718,9 @@ 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
		*/
		if (tx_flags & DMA_PREP_INTERRUPT)
		edesc->pset[i].param.opt \|= TCINTEN;
		}