drm/amd/display: Fix ASSR regression on embedded panels

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[Why]
Regression found in some embedded panels traces back to the earliest
upstreamed ASSR patch. The changed code flow are causing problems
with some panels.

[How]
- Change ASSR enabling code while preserving original code flow
  as much as possible
- Simplify the code on guarding with internal display flag

Bug: https://bugzilla.kernel.org/show_bug.cgi?id=213779
Bug: https://gitlab.freedesktop.org/drm/amd/-/issues/1620
Reviewed-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Stylon Wang <stylon.wang@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org

...

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Stylon Wang 2021-07-21 12:25:24 +08:00 • committed by Alex Deucher

parent 27f5355f5d

commit 6be50f5d83

1 changed files with 5 additions and 3 deletions

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drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c

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