drm/amd/display: FEC overhead should be checked once for mst slot nums

Browse source

[Why] Mst slot nums equals to pbn / pbn_div.

Today, pbn_div refers to dm_mst_get_pbn_divider ->
dc_link_bandwidth_kbps. In dp_link_bandwidth_kbps,
which includes effect of FEC overhead already. As
result, we should not include effect of FEC overhead
again while calculating pbn by kpbs_to_peak_pbn
(stream_kbps).

[How] Include FEC overhead within dp_link_bandwidth_kbps.
Remove FEC overhead from kbps_to_peak_pbn.

Reviewed-by: Wayne Lin <wayne.lin@amd.com>
Acked-by: Roman Li <roman.li@amd.com>
Signed-off-by: Hersen Wu <hersenxs.wu@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

...

This commit is contained in:

Hersen Wu 2024-03-11 18:18:34 -04:00 • committed by Alex Deucher

parent 029faefb73

commit 8b2cb32cf0

2 changed files with 10 additions and 30 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

37

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

View file

3

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

View file