linux-kernel - Re: [PATCH 0/9] TI DMM-TILER driver

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Message-ID: <20101216172531.GG29435@lba0869738>
Date:	Thu, 16 Dec 2010 11:25:36 -0600
From:	David Sin <davidsin@...com>
To:	kgunn@...com
Cc:	linux-arm-kernel@...ts.infradead.org,
	dri-devel@...ts.freedesktop.org, Greg KH <greg@...ah.com>,
	Russell King <rmk@....linux.org.uk>,
	Andrew Morton <akpm@...ux-foundation.org>,
	linux-kernel@...r.kernel.org, linux-omap@...r.kernel.org
Subject: Re: [PATCH 0/9] TI DMM-TILER driver

On Thu, Dec 16, 2010 at 02:34:05PM +0100, Arnd Bergmann wrote:
> On Monday 06 December 2010, David Sin wrote:
> > Tiling and Isometric Lightweight Engine for Rotation (TILER) driver
> > =====
> > 
> > Dynamic Memory Manager (DMM) is a hardware block made by Texas Instruments.
> > Within the DMM exists at least one TILER hardware component.  Its purpose is to
> > organize video/image memory in a 2-dimensional fashion to limit memory
> > bandwidth and facilitate 0 effort rotation and mirroring.  The TILER driver
> > facilitates allocating, freeing, as well as mapping 2D blocks (areas) in the
> > TILER container(s).  It also facilitates rotating and mirroring the allocated
> > blocks or its rectangular subsections.
> 
> How does this relate to DRM/GEM? I don't understand too much about graphics
> drivers, but it does sound like there is some overlap in functionality.
> 
> I guess at the very least the DMM should live in drivers/gpu/ instead of
> drivers/misc, but perhaps it could be integrated more closely with the
> existing code there.
> 
> 	Arnd
Do you know if anyone on your team is familiar with DRM/GEM (grap ext mgr) 
for x86?  I'm trying to understand the differences and make a case that 
 it's not the same as DMM/TILER.  

thanks,
-- 
David Sin
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