Re: [PATCH 0/3] ARM/dma: edma: Serve cyclic clients via high priority queue
From: Vinod Koul
Date: Mon Jul 28 2014 - 07:42:34 EST
On Tue, Jul 08, 2014 at 01:46:35PM +0300, Peter Ujfalusi wrote:
> It is preferred that audio is served with the highest priority queue in order to
> avoid delays in data transfer between memory and audio IP.
> The following series will add an API to arch code to assign a channel to a given
> The default queue is changed from 0 (highest priority) to lowest priority.
> In the dmaengine driver we move the cyclic channel to queue0 (highest priority)
> and move it back to default queue when the channel is terminated.
> Peter Ujfalusi (3):
> ARM: edma: Set default queue to lowest priority
> ARM: edma: Add edma_assign_channel_eventq() to move channel to a give
> dma: edma: Serve cyclic (audio) channels with high priority queue
> arch/arm/common/edma.c | 31 ++++++++++++++++++++++++++++++-
> drivers/dma/edma.c | 8 ++++++++
> include/linux/platform_data/edma.h | 2 ++
> 3 files changed, 40 insertions(+), 1 deletion(-)
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