linux-kernel - Re: [PATCH 1/3] dmaengine: add TI EDMA DMA engine driver

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Message-ID: <20120821182004.GA32420@beef>
Date:	Tue, 21 Aug 2012 14:20:04 -0400
From:	Matt Porter <mporter@...com>
To:	vinod.koul@...el.com, dan.j.williams@...el.com, cjb@...top.org,
	grant.likely@...retlab.ca
Cc:	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Linux ARM Kernel List <linux-arm-kernel@...ts.infradead.org>,
	Linux MMC List <linux-mmc@...r.kernel.org>,
	Linux SPI Devel List 
	<spi-devel-general@...ts.sourceforge.net>,
	Linux DaVinci Kernel List 
	<davinci-linux-open-source@...ux.davincidsp.com>,
	Sekhar Nori <nsekhar@...com>
Subject: Re: [PATCH 1/3] dmaengine: add TI EDMA DMA engine driver

On Thu, Aug 16, 2012 at 05:44:29PM -0400, Matt Porter wrote:
> Add a DMA engine driver for the TI EDMA controller. This driver
> is implemented as a wrapper around the existing DaVinci private
> DMA implementation. This approach allows for incremental conversion
> of each peripheral driver to the DMA engine API. The EDMA driver
> supports slave transfers but does not yet support cyclic transfers.

I got my hands on a AM18x WL12xx module so I could test MMC1 and this
exposed some bugs in the driver's handling of the second EDMA controller
case. DA850/OMAP-L138/AM1x have this second EDMA controller. I've
addressed this in v2 which will be posted shortly.

I'm expecting to receive a DM646x EVM RSN so I can cover testing that
part as well.

-Matt
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