drm/amd/display: Perform DMUB hw_init on resume

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[Why]
The DMUB is put into reset on suspend and is not running on resume,
disabling PSR/ABM features.

[How]
Move the allocation of the framebuffer to sw_init.

Do DMUB hardware init and framebuffer filling only from hw_init.

On resume the contents of the framebuffer will be invalid so those
should be cleared.

Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Reviewed-by: Roman Li <Roman.Li@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Nicholas Kazlauskas 2019-11-25 09:49:27 -05:00 • committed by Alex Deucher

parent ec5b356c58

commit 8c7aea404d

2 changed files with 128 additions and 75 deletions

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196

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

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7

drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.h

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