drm/amd/display: Wake DMCUB before executing GPINT commands

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[Why]
DMCUB can be in idle when we attempt to interface with the HW through
the GPINT mailbox resulting in a system hang.

[How]
Add dc_wake_and_execute_gpint() to wrap the wake, execute, sleep
sequence.

If the GPINT executes successfully then DMCUB will be put back into
sleep after the optional response is returned.

It functions similar to the inbox command interface.

Cc: Mario Limonciello <mario.limonciello@amd.com>
Cc: Alex Deucher <alexander.deucher@amd.com>
Cc: stable@vger.kernel.org
Reviewed-by: Hansen Dsouza <hansen.dsouza@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Nicholas Kazlauskas 2023-12-05 11:22:56 -05:00 • committed by Alex Deucher

parent 8892780834

commit e5ffd1263d

4 changed files with 77 additions and 54 deletions

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27

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_debugfs.c

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72

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

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11

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

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19

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

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