video: mcde: Add tripple buffer support

This patch adds tripple buffer support to the mcde
driver. Useful for video mode devices (e.g. HDMI)
where a missed v-sync leads to half frame rate
(the client has to wait for the next v-sync).
Tripple buffering solves this problem since there
are two back buffers the client can use.

Tripple buffering for HDMI is activated in
menuconfig by enabling:
System Type -> Display selection -> Enable tripple
buffer for HDMI display

ST-Ericsson ID: 335004
ST-Ericsson Linux next: Not tested, ER 282779
ST-Ericsson FOSS-OUT ID: Trivial

Change-Id: Ice1f936a8a00e2fbc8fdf7e8c6621c539efe0ac4
Signed-off-by: Jimmy Rubin <jimmy.rubin@stericsson.com>
Reviewed-on: http://gerrit.lud.stericsson.com/gerrit/21839
Reviewed-by: QATOOLS
Reviewed-by: Per PERSSON <per.xb.persson@stericsson.com>
Reviewed-by: QATEST
Reviewed-by: Marcel TUNNISSEN <marcel.tuennissen@stericsson.com>

Conflicts:

	arch/arm/configs/u8500_defconfig
	drivers/misc/dispdev/dispdev.c

0 files changed, 0 insertions, 0 deletions