linux-kernel - Re: [PATCH V1] dmaengine: tegra: add dma driver

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Message-ID: <20120423130659.GA22186@n2100.arm.linux.org.uk>
Date:	Mon, 23 Apr 2012 14:06:59 +0100
From:	Russell King - ARM Linux <linux@....linux.org.uk>
To:	Laxman Dewangan <ldewangan@...dia.com>
Cc:	Vinod Koul <vinod.koul@...ux.intel.com>,
	"dan.j.williams@...el.com" <dan.j.williams@...el.com>,
	"grant.likely@...retlab.ca" <grant.likely@...retlab.ca>,
	"rob.herring@...xeda.com" <rob.herring@...xeda.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	"devicetree-discuss@...ts.ozlabs.org" 
	<devicetree-discuss@...ts.ozlabs.org>,
	Stephen Warren <swarren@...dia.com>,
	"linux-tegra@...r.kernel.org" <linux-tegra@...r.kernel.org>
Subject: Re: [PATCH V1] dmaengine: tegra: add dma driver

On Mon, Apr 23, 2012 at 05:47:03PM +0530, Laxman Dewangan wrote:
> Hi Russell,
> On Monday 23 April 2012 02:11 PM, Vinod Koul wrote:
>> On Fri, 2012-04-20 at 17:46 +0530, Laxman Dewangan wrote:
>>> Thanks Vinod for quick review.
>> Since I was on vacation, I hadn't noticed Russell has already sent the
>> patches for omap dma support.
>> http://permalink.gmane.org/gmane.linux.ports.arm.omap/75034
>>
>> It would be nice if both the efforts are coordinated.
>>
>> Btw I like the virtual channel support introduced by Russell
>>
>
> Can you please point me the virtual channel related change? I am not  
> able to locate this like search for function vchan_* ().
> My driver is also on same line but not used vchan_* and also having  
> support for cyclic transfer.

It's only been posted in RFC form on linux-arm-kernel and linux-omap
lists.  The specific patch is:

http://lists.arm.linux.org.uk/lurker/message/20120418.101116.082b350f.en.html

I wouldn't call it perfected yet, but usable.  It doesn't have any
knowledge about cyclic transfers either.
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