Roman Stratiienko authored Jan 11, 2022 and John Stultz committed Jan 12, 2022

On HiKey/HiKey960 boards, enabling the crtc before the first
composition is set can cause trouble, as part of the display
engine is configured in the atomic plane update method.

So when commit 36a7f285 ("drm_hwcomposer: Rework display
Mode Setting and DPMS handling"), which reworked the dpms and
modeset logic to commit the modeset immediately, landed it
caused bootup regressions on those boards.

Talking with others it seems other drivers likely may have
issues trying to enable the crtc without a plane.

Thus this patch changes the logic to queue modesets so they
are submitted with the initial composition. Similarly it
removes the crtc activation, as the initial composition will
implicitly activate the crtc.

Fixes: 36a7f285

  ("drm_hwcomposer: Rework display Mode Setting and DPMS handling")
Signed-off-by: Roman Stratiienko <roman.o.stratiienko@globallogic.com>
[jstultz: Added commit message, reworked a comment]
Signed-off-by: John Stultz <john.stultz@linaro.org>
Change-Id: Ie4d1f967da052b0b3ef73257c2ca76b30504a6c2