Commit dcade880 authored by Mikita Lipski's avatar Mikita Lipski Committed by Alex Deucher
Browse files

drm/amd/display: Add PBN per slot calculation for DSC 



[why]
Need to calculate VCPI slots differently for DSC
to take in account current link rate, link count
and FEC.
[how]
Add helper to get pbn_div from dc_link

Acked-by: default avatarLyude Paul <lyude@redhat.com>
Reviewed-by: default avatarLeo Li <sunpeng.li@amd.com>
Signed-off-by: default avatarMikita Lipski <mikita.lipski@amd.com>
Signed-off-by: default avatarAlex Deucher <alexander.deucher@amd.com>
parent 9e5b9590

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

+8 −0
Original line number Diff line number Diff line
@@ -493,3 +493,11 @@ void amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm, 
		aconnector->connector_id);

}



int dm_mst_get_pbn_divider(struct dc_link *link)

{

	if (!link)

		return 0;



	return dc_link_bandwidth_kbps(link,

			dc_link_get_link_cap(link)) / (8 * 1000 * 54);

}

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

+2 −0
Original line number Diff line number Diff line
@@ -29,6 +29,8 @@ 
struct amdgpu_display_manager;

struct amdgpu_dm_connector;



int dm_mst_get_pbn_divider(struct dc_link *link);



void amdgpu_dm_initialize_dp_connector(struct amdgpu_display_manager *dm,

				       struct amdgpu_dm_connector *aconnector);

CRA Git | Maintained and supported by SUSTech CRA and CCSE