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

David Sin
2010-12-16T17:13:19Z

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