linux-kernel - Re: [PATCH v7 01/10] ARM: davinci: move private EDMA API to arm/common

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Date:	Fri, 01 Feb 2013 22:52:46 +0300
From:	Sergei Shtylyov <sshtylyov@...sta.com>
To:	Matt Porter <mporter@...com>
CC:	Tony Lindgren <tony@...mide.com>,
	Linux DaVinci Kernel List 
	<davinci-linux-open-source@...ux.davincidsp.com>,
	Linux OMAP List <linux-omap@...r.kernel.org>,
	Russell King <linux@....linux.org.uk>,
	"Cousson, Benoit" <b-cousson@...com>,
	Arnd Bergmann <arnd@...db.de>,
	Linux Documentation List <linux-doc@...r.kernel.org>,
	Vinod Koul <vinod.koul@...el.com>,
	Linux MMC List <linux-mmc@...r.kernel.org>,
	Devicetree Discuss <devicetree-discuss@...ts.ozlabs.org>,
	Mark Brown <broonie@...nsource.wolfsonmicro.com>,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	Rob Herring <rob.herring@...xeda.com>,
	Grant Likely <grant.likely@...retlab.ca>,
	Rob Landley <rob@...dley.net>, Dan Williams <djbw@...com>,
	Linux SPI Devel List 
	<spi-devel-general@...ts.sourceforge.net>,
	Chris Ball <cjb@...top.org>,
	Linux ARM Kernel List <linux-arm-kernel@...ts.infradead.org>
Subject: Re: [PATCH v7 01/10] ARM: davinci: move private EDMA API to arm/common

Hello.

On 02/01/2013 09:49 PM, Matt Porter wrote:

>>> Move mach-davinci/dma.c to common/edma.c so it can be used
>>> by OMAP (specifically AM33xx) as well.

>> I think this should rather go to drivers/dma/?

> No, this is the private EDMA API. It's the analogous thing to
> the private OMAP dma API that is in plat-omap/dma.c. The actual
> dmaengine driver is in drivers/dma/edma.c as a wrapper around
> this...same way OMAP DMA engine conversion is being done.

  Keeps me wondering why we couldn't have the same with CPPI 4.1 when I proposed
that, instead of waiting indefinitely for TI to convert it to drivers/dma/
directly. We could have working MUSB DMA on OMAP-L1x/Sitara all this time... Sigh.

> -Matt

WBR, Sergei

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