From: Mark Brown <broonie-DgEjT+Ai2ygdnm+yROfE0A@public.gmane.org>
To: Vinod Koul <vinod.koul-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
Cc: Florian Meier <florian.meier-oZ8rN/sblLk@public.gmane.org>,
Stephen Warren <swarren-3lzwWm7+Weoh9ZMKESR00Q@public.gmane.org>,
Dan Williams
<dan.j.williams-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>,
linux-rpi-kernel
<linux-rpi-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org,
linux-kernel-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
dmaengine-u79uwXL29TY76Z2rM5mHXA@public.gmane.org,
Liam Girdwood <lgirdwood-Re5JQEeQqe8AvxtiuMwx3w@public.gmane.org>,
alsa-devel-K7yf7f+aM1XWsZ/bQMPhNw@public.gmane.org,
Martin Sperl <martin-d5rIkyn9cnPYtjvyW6yDsg@public.gmane.org>
Subject: Re: [PATCH] dmaengine: Add support for BCM2835.
Date: Wed, 13 Nov 2013 16:30:55 +0000 [thread overview]
Message-ID: <20131113163055.GV878@sirena.org.uk> (raw)
In-Reply-To: <20131113143101.GD8834-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
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On Wed, Nov 13, 2013 at 08:01:01PM +0530, Vinod Koul wrote:
> On Wed, Nov 13, 2013 at 02:54:41PM +0000, Mark Brown wrote:
> > Yes, though I think some of the stuff Martin was talking about will need
> > changes to the dmaengine APIs. He was wanting to reuse DMA lists which
> > currently dmaengine needs to have built up each time.
> Can you elobrate a bit more on what you guys want to do here?
He wants to be able to submit a descriptor to the hardware more than
once to save on the costs of of constructing the descriptor. I'm not
convinced this is a huge benefit most of the time.
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next prev parent reply other threads:[~2013-11-13 16:30 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-11-08 17:22 [PATCH] dmaengine: Add support for BCM2835 Florian Meier
2013-11-08 18:17 ` Mark Brown
[not found] ` <20131108181743.GR2493-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2013-11-13 5:00 ` Vinod Koul
[not found] ` <20131113050017.GO8834-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2013-11-13 12:51 ` Mark Brown
[not found] ` <20131113125111.GE878-GFdadSzt00ze9xe1eoZjHA@public.gmane.org>
2013-11-13 13:35 ` Vinod Koul
2013-11-13 14:54 ` Mark Brown
2013-11-13 14:31 ` Vinod Koul
[not found] ` <20131113143101.GD8834-ral2JQCrhuEAvxtiuMwx3w@public.gmane.org>
2013-11-13 16:30 ` Mark Brown [this message]
[not found] ` <527D1DDA.2040004-oZ8rN/sblLk@public.gmane.org>
2013-11-08 19:11 ` Russell King - ARM Linux
[not found] ` <20131108191117.GT16735-l+eeeJia6m9vn6HldHNs0ANdhmdF6hFW@public.gmane.org>
2013-11-11 12:36 ` Florian Meier
2013-11-13 15:02 ` Tomasz Figa
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