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Commit 0b7580ba authored by Heiko Schocher's avatar Heiko Schocher Committed by Sekhar Nori
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ARM: davinci: map default_queue to edma channels 



Default queue is expected to be a low-priority queue.
This way, long transfers on the default queue started
by the codec engine will not cause audio defects.

Signed-off-by: default avatarHeiko Schocher <hs@denx.de>
Signed-off-by: default avatarJuha Kuikka <juha.kuikka@gmail.com>
Reported-by: default avatarJuha Kuikka <juha.kuikka@gmail.com>
Acked-by: default avatarRajashekhara, Sudhakar <sudhakar.raj@ti.com>
Cc: linux-mmc@vger.kernel.org
Cc: davinci-linux-open-source@linux.davincidsp.com
Cc: linux-arm-kernel@lists.infradead.org
Cc: Rajashekhara, Sudhakar <sudhakar.raj@ti.com>
Cc: Ido Yariv <ido@wizery.com>
Cc: Sekhar Nori <nsekhar@ti.com>
Cc: Wolfgang Denk <wd@denx.de>
Cc: Sergei Shtylyov <sshtylyov@mvista.com>
Signed-off-by: default avatarSekhar Nori <nsekhar@ti.com>
parent 62aa2b53

arch/arm/mach-davinci/dma.c

+1 −5
Original line number Diff line number Diff line
@@ -1508,12 +1508,8 @@ static int __init edma_probe(struct platform_device *pdev) 
			goto fail;

		}



		/* Everything lives on transfer controller 1 until otherwise

		 * specified. This way, long transfers on the low priority queue

		 * started by the codec engine will not cause audio defects.

		 */

		for (i = 0; i < edma_cc[j]->num_channels; i++)

			map_dmach_queue(j, i, EVENTQ_1);

			map_dmach_queue(j, i, info[j]->default_queue);



		queue_tc_mapping = info[j]->queue_tc_mapping;

		queue_priority_mapping = info[j]->queue_priority_mapping;

arch/arm/mach-davinci/include/mach/edma.h

+5 −0
Original line number Diff line number Diff line
@@ -250,6 +250,11 @@ struct edma_soc_info { 
	unsigned	n_slot;

	unsigned	n_tc;

	unsigned	n_cc;

	/*

	 * Default queue is expected to be a low-priority queue.

	 * This way, long transfers on the default queue started

	 * by the codec engine will not cause audio defects.

	 */

	enum dma_event_q	default_queue;



	/* Resource reservation for other cores */