The haswell i915 kernel driver apparently expects the VBIOS
to set a few specific registers. This sequence is enough to
make the driver happy without executing the VBIOS.
This also makes graphics work after suspend/resume.
BUG=chrome-os-partner:19638
BRANCH=none
TEST=manual: boot normal mode on slippy
Change-Id: I34937d55ffff8a9445442e6e6ca1bfc49869da63
Signed-off-by: Duncan Laurie <dlaurie@chromium.org>
Reviewed-on: https://gerrit.chromium.org/gerrit/56806
Reviewed-by: Aaron Durbin <adurbin@chromium.org>
9fbb537cf7