From 0b7580ba9d4ac653cf39fa754c21fa36c080e444 Mon Sep 17 00:00:00 2001 From: Heiko Schocher Date: Thu, 19 Jan 2012 08:05:21 +0100 Subject: [PATCH] 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: Heiko Schocher Signed-off-by: Juha Kuikka Reported-by: Juha Kuikka Acked-by: Rajashekhara, Sudhakar Cc: linux-mmc@vger.kernel.org Cc: davinci-linux-open-source@linux.davincidsp.com Cc: linux-arm-kernel@lists.infradead.org Cc: Rajashekhara, Sudhakar Cc: Ido Yariv Cc: Sekhar Nori Cc: Wolfgang Denk Cc: Sergei Shtylyov Signed-off-by: Sekhar Nori --- arch/arm/mach-davinci/dma.c | 6 +----- arch/arm/mach-davinci/include/mach/edma.h | 5 +++++ 2 files changed, 6 insertions(+), 5 deletions(-) diff --git a/arch/arm/mach-davinci/dma.c b/arch/arm/mach-davinci/dma.c index da90103a313d..fd33919c95d4 100644 --- a/arch/arm/mach-davinci/dma.c +++ b/arch/arm/mach-davinci/dma.c @@ -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; diff --git a/arch/arm/mach-davinci/include/mach/edma.h b/arch/arm/mach-davinci/include/mach/edma.h index 20c77f29bf0f..7e84c906ceff 100644 --- a/arch/arm/mach-davinci/include/mach/edma.h +++ b/arch/arm/mach-davinci/include/mach/edma.h @@ -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 */