drm/amd/display: Only flush delta from last command execution

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[Why]
We're currently flushing commands that had been previously been
flushed or are currently being processed by the DMCUB when we don't
immediately wait for idle after command execution.

[How]
Avoiding reflushing the data by keeping track of the last wptr.

We'll treat this as the actual rptr by creating a copy of the inbox
and modifying the copy's rptr.

Reviewed-by: Eric Yang <Eric.Yang2@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 2021-11-02 14:27:30 -04:00 • committed by Alex Deucher

parent c09bb36dd1

commit a53b554b56

2 changed files with 9 additions and 1 deletions

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1

drivers/gpu/drm/amd/display/dmub/dmub_srv.h

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9

drivers/gpu/drm/amd/display/dmub/src/dmub_srv.c

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