From: Alex Ivanov <lausgans@gmail.com>
Date: Mon, 15 Jun 2015 05:50:45 +0000 (+0300)
Subject: stifb: Implement hardware accelerated copyarea
X-Git-Tag: omap-for-v4.2/fixes-rc2-v2~22^2~1
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=cb908ed3495496b9973a2b9ed1a60f43933fdf01;p=pandora-kernel.git

stifb: Implement hardware accelerated copyarea

This patch adds hardware assisted scrolling. The code is based upon the
following investigation: https://parisc.wiki.kernel.org/index.php/NGLE#Blitter

A simple 'time ls -la /usr/bin' test shows 1.6x speed increase over soft
copy and 2.3x increase over FBINFO_READS_FAST (prefer soft copy over
screen redraw) on Artist framebuffer.

Signed-off-by: Alex Ivanov <lausgans@gmail.com>
Signed-off-by: Helge Deller <deller@gmx.de>
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