drm/amd/display: add mechanism to skip DCN init

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[Why]
If optimized init is done in FW. DCN init can be skipped in driver. This
need to be communicated between driver and fw and maintain backwards
compatibility.

[How]
Use DMUB scratch 0 bit 2 to indicate optimized init done in fw and
use DMUB scatch 4 bit 0 to indicate drive supports the optimized flow
so FW will perform it.

Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Acked-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Eric Yang 2020-05-29 17:13:57 -04:00 • committed by Alex Deucher

parent bddb55ccbd

commit 499e4b1c72

8 changed files with 12 additions and 61 deletions

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3

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

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28

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

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2

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

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4

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c

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1

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

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6

drivers/gpu/drm/amd/display/dmub/src/dmub_dcn21.c

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4

drivers/gpu/drm/amd/display/dmub/src/dmub_dcn21.h

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25

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

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