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

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Message-ID: <4F97C709.2060807@nvidia.com>
Date:	Wed, 25 Apr 2012 15:12:33 +0530
From:	Laxman Dewangan <ldewangan@...dia.com>
To:	Vinod Koul <vinod.koul@...ux.intel.com>
CC:	Russell King - ARM Linux <linux@....linux.org.uk>,
	"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 Wednesday 25 April 2012 03:03 PM, Vinod Koul wrote:
> On Wed, 2012-04-25 at 14:31 +0530, Laxman Dewangan wrote:
>> I had a  communication with Russell on another change thread and
>> understand that some more work need to be done in virt_chan to support
>> cyclic one.
>>
>> I want to have the cyclic dma support in my driver so I want to go on
>> following steps:
>> 1. I will post the patch for tegra dma which will not use the virt_dma
>> so that my driver will be independent of Russel's change.
> which driver? A new driver for cyclic support only or on top of
> Russell's changes?

I am referring the Nvidia Tegra's APB dma driver. This will be 
completely new driver based on dmaengine. We have old dma driver under 
mach-tegra/dma.c which has tegra specific apis. Want to move this driver 
to generic dmaengine based api.

Russell is working on Omap's dma driver.
These are completely independent driver.

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