drm/amd/display: Add z-state support policy for dcn35

Browse source

[Why]
DML2 means that the dcn3x policy for calculating z-state support
no longer runs from validate_bandwidth.

This means we are unconditionally allowing Z8, the hardware default.

[How]
Port the policy over to DCN35, but with a few modifications:
- Don't use min_dst_y_next_start as a check for Z8/Z10 allow
- Add support for overriding the Z10 stutter period per ASIC
- Cleanup the code to make the policy assignment more clear

Reviewed-by: Charlene Liu <charlene.liu@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Nicholas Kazlauskas 2023-11-03 10:01:01 -04:00 • committed by Alex Deucher

parent 1c22d6ce53

commit 3f3b08be58

4 changed files with 44 additions and 0 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

1

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

View file

34

drivers/gpu/drm/amd/display/dc/dml/dcn35/dcn35_fpu.c

View file

2

drivers/gpu/drm/amd/display/dc/dml/dcn35/dcn35_fpu.h

View file

7

drivers/gpu/drm/amd/display/dc/resource/dcn35/dcn35_resource.c

View file