From: Tomi Valkeinen <tomi.valkeinen@ti.com>
Date: Thu, 25 Sep 2014 19:24:29 +0000 (+0000)
Subject: drm/omap: fix TILER on OMAP5
X-Git-Tag: omap-for-v4.2/o2_dc~72^2~15^2~13
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=7cb0d6c17b96b8bf3c25de2dfde4fdeb9191f4c3;p=pandora-kernel.git

drm/omap: fix TILER on OMAP5

On OMAP5 it is not possible to use TILER buffer with CPU when caching or
write-combining is used. Doing so leads to errors from the memory
manager.

However, on OMAP4, write-combining works fine.

This patch adds platform specific data for the TILER, and a function
tiler_get_cpu_cache_flags() which can be used to get the caching mode to
be used.

Note that without write-combining the use of the TILER buffer with CPU
is unusably slow. It's still good to have it operational for testing
purposes.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen@ti.com>
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