From: Mikita Lipski mikita.lipski@amd.com
[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
Signed-off-by: Mikita Lipski mikita.lipski@amd.com --- .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 8 ++++++++ .../gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h | 2 ++ 2 files changed, 10 insertions(+)
diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c index 7557edee7db0..c376c8ccd391 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c @@ -491,3 +491,11 @@ 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); +} diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h index 2da851b40042..a553ea046185 100644 --- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h +++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h @@ -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);