[PATCH 0/3] ARM/dma: edma: Serve cyclic clients via high priority queue

From: Peter Ujfalusi
Date: Tue Jul 08 2014 - 06:47:22 EST


Hi,

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
queue.
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.

Regards,
Peter
---
Peter Ujfalusi (3):
ARM: edma: Set default queue to lowest priority
ARM: edma: Add edma_assign_channel_eventq() to move channel to a give
queue
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(-)

--
2.0.0

--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at http://vger.kernel.org/majordomo-info.html
Please read the FAQ at http://www.tux.org/lkml/