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

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Date:	Thu, 16 Dec 2010 14:34:05 +0100
From:	Arnd Bergmann <arnd@...db.de>
To:	linux-arm-kernel@...ts.infradead.org,
	dri-devel@...ts.freedesktop.org
Cc:	David Sin <davidsin@...com>, 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 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
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