tree 4252c78c923c277fce1800be5b5e68517c7434c2
parent 793f4f83f128b5ed2afe9bbcc1299c625bad9a8c
author Jeremy Compostella <jeremy.compostella@intel.com> 1673471142 -0700
committer Stefan Reinauer <stefan.reinauer@coreboot.org> 1675553946 +0000

common: Turn off VGA when not in use anymore

When VGA mode is up on Alder Lake or Raptor Lake devices,
`Update_Outputs' does successfully turn off graphics but it also
leaves some undesirable configuration which can confuse following
graphics drivers such as the PEIM graphics driver.

Experimentally, we have identified that `libgfxinit' should turn off
VGA when it disables the ouput which was using this mode.

BUG=b:264526798
BRANCH=firmware-brya-14505.B
TEST=Developer screen shows up on the recovery flow on skolas

Change-Id: Id39c308a4d0408b996834439186645b33e692d02
Signed-off-by: Jeremy Compostella <jeremy.compostella@intel.com>
Reviewed-on: https://review.coreboot.org/c/libgfxinit/+/72123
Reviewed-by: Tarun Tuli <taruntuli@google.com>
Reviewed-by: Nick Vaccaro <nvaccaro@google.com>
Tested-by: Stefan Reinauer <stefan.reinauer@coreboot.org>