drm/amd/display: Extend inbox0 lock to run Replay/PSR

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[Why]
The inbox1 infrastructure is deprecated, so to support display
power features requiring a DMUB interlock moving forward extend
the inbox0 locking conditions to also include Replay or PSR.

[How]
Implemented a series of changes to improve HW lock handling:
- Deprecated should_use_dmub_inbox1_lock() and guarded it with
  DCN401 flag.
- Migrated lock checks into inbox0 helpers and added PSR/Replay
  enablement checks to ensure correct behavior.
- Updated HWSS fast update path to acquire HW lock as needed
  using the new helpers.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Andrew Mazour <Andrew.Mazour@amd.com>
Signed-off-by: Ray Wu <ray.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Andrew Mazour 2025-10-15 12:19:49 -04:00 • committed by Alex Deucher

parent face6a3615

commit 7d041982fe

3 changed files with 41 additions and 18 deletions

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5

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

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58

drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.c

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2

drivers/gpu/drm/amd/display/dc/dce/dmub_hw_lock_mgr.h

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