Beside updates to the framebuffer offset in memory, Setup_FB() allows
changes to size, position, tiling and rotation, too. Basically every-
thing but changes to BPC (which would need an update in the transcoder
configuration on pre-Broadwell hardware, too).
It is not clear if the updates work fully synchronous on all hardware
generations. Though, tests on APL have shown a glitch free transition
so far.
Change-Id: I3c8352315390d9c4d2fb2a7e09355b5fe4089421
Signed-off-by: Nico Huber <nico.h@gmx.de>
Reviewed-on: https://review.coreboot.org/23165
Reviewed-by: Arthur Heymans <arthur@aheymans.xyz>
f7f537e714