linux-kernel - Re: [PATCH/RFC] dmaengine: add a slave parameter to __dma_request

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Message-ID: <CACRpkdbS5P9DsCWYHcw8n-7EYUX6q=GaUdrDF99Zx12j0-mU8A@mail.gmail.com>
Date:	Mon, 12 Mar 2012 20:47:27 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Vinod Koul <vinod.koul@...el.com>
Cc:	Guennadi Liakhovetski <g.liakhovetski@....de>,
	Russell King - ARM Linux <linux@....linux.org.uk>,
	linux-kernel@...r.kernel.org,
	Jassi Brar <jassisinghbrar@...il.com>,
	Magnus Damm <magnus.damm@...il.com>,
	Paul Mundt <lethal@...ux-sh.org>
Subject: Re: [PATCH/RFC] dmaengine: add a slave parameter to __dma_request_channel()

On Mon, Mar 12, 2012 at 3:47 AM, Vinod Koul <vinod.koul@...el.com> wrote:
> On Fri, 2012-03-09 at 13:20 +0100, Guennadi Liakhovetski wrote:
>> It can be made to work as long as there's only one DMAC group with
>> configurable channels and all other DMACs are dedicated to specific
>> peripherals, yes. I don't know whether there are already now or are
>> approaching any platforms with multiple reconfigurable groups.
>
> And that is what I am talking about.
>
> Having specific channel mapping given by platform for all channels which
> are to be used dedicated. And a pool of channels which can be used by
> anyone (if they can be) on a platform.
>
> Does this proposal sound good for others as well.

It sounds good to me.

Yours,
Linus Walleij
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