linux-kernel - Re: [RFC][PATCH 1/3] ARM: OMAP: DMA: Add support for DMA channel self linking on OMAP1510

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Message-Id: <20090817121601.2fdb0c0f.jhnikula@gmail.com>
Date:	Mon, 17 Aug 2009 12:16:01 +0300
From:	Jarkko Nikula <jhnikula@...il.com>
To:	Janusz Krzysztofik <jkrzyszt@....icnet.pl>
Cc:	Tony Lindgren <tony@...mide.com>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Peter Ujfalusi <peter.ujfalusi@...ia.com>,
	"alsa-devel@...a-project.org" <alsa-devel@...a-project.org>,
	"linux-omap@...r.kernel.org" <linux-omap@...r.kernel.org>,
	"linux-arm-kernel@...ts.arm.linux.org.uk" 
	<linux-arm-kernel@...ts.arm.linux.org.uk>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>
Subject: Re: [RFC][PATCH 1/3] ARM: OMAP: DMA: Add support for DMA channel
 self linking on OMAP1510

On Mon, 10 Aug 2009 10:50:00 +0200
Janusz Krzysztofik <jkrzyszt@....icnet.pl> wrote:

> Implement DMA channel self linking on OMAP1510 using AUTO_INIT and REPEAT
> flags of the DMA CCR register.
> 
> Created against linux-2.6.31-rc5.
> 
> Tested on Amstrad Delta.
> 
> Signed-off-by: Janusz Krzysztofik <jkrzyszt@....icnet.pl>
> 
Tony, I'm fine with this patch. Although the autoinitialization !=
channel linking, in SW point of view autoinitialization and channel
linking with itself looks the same so it's better to re-utilize
existing omap_dma_link_lch also for 1510 DMA autoinitialization than
inventing own API for it.

Acked-by: Jarkko Nikula <jhnikula@...il.com>
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