drm/amd/display: Fix TDR eDP and USB4 display light up issue

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[ Upstream commit 30456ffa65 ]

[Why]
After TDR recovery, eDP and USB4 display does not light up. Because
dmub outbox notifications are not enabled after dmub reload and link
encoder assignments for the streams are not cleared before dc state
reset.

[How]
- Dmub outbox notification is enabled after tdr recovery by issuing
  inbox command to dmub.
- Link encoders for the streams are unassigned before dc state reset.

Reviewed-by: Jimmy Kizito <Jimmy.Kizito@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Meenakshikumar Somasundaram <meenakshikumar.somasundaram@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Signed-off-by: Sasha Levin <sashal@kernel.org>

...

This commit is contained in:

Meenakshikumar Somasundaram 2022-07-11 18:37:41 -04:00 • committed by Greg Kroah-Hartman

parent 3101839b08

commit 909dae582c

2 changed files with 2 additions and 0 deletions

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

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1

drivers/gpu/drm/amd/display/dc/dc_link.h

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