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

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Message-ID: <53D5E9CF.10706@ti.com>
Date:	Mon, 28 Jul 2014 09:12:31 +0300
From:	Peter Ujfalusi <peter.ujfalusi@...com>
To:	<nsekhar@...com>, <joelf@...com>, <vinod.koul@...el.com>
CC:	<linux@....linux.org.uk>, <linux-arm-kernel@...ts.infradead.org>,
	<linux-kernel@...r.kernel.org>, <linux-omap@...r.kernel.org>,
	<davinci-linux-open-source@...ux.davincidsp.com>,
	<dmaengine@...r.kernel.org>
Subject: Re: [PATCH 0/3] ARM/dma: edma: Serve cyclic clients via high priority
 queue

On 07/08/2014 01:46 PM, Peter Ujfalusi wrote:
> 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.

ping?

> 
> 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(-)
> 


-- 
Péter
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