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

Browse source

[Why]
If optimized init is done in FW. DCN init 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>
Reviewed-by: Tony Cheng <Tony.Cheng@amd.com>
Acked-by: Rodrigo Siqueira <Rodrigo.Siqueira@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 c04bd16e48

commit 8f95ff284c

10 changed files with 46 additions and 72 deletions

Show all changes Ignore whitespace when comparing lines Ignore changes in amount of whitespace Ignore changes in whitespace at EOL

Download patch file Download diff file Expand all files Collapse all files

4

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

View file

28

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

View file

2

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

View file

4

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

View file

5

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

View file

15

drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.c

View file

4

drivers/gpu/drm/amd/display/dmub/src/dmub_dcn20.h

View file

10

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

View file

6

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

View file

40

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

View file