diff options
author | Mikita Lipski <mikita.lipski@amd.com> | 2019-11-16 15:45:37 -0500 |
---|---|---|
committer | Alex Deucher <alexander.deucher@amd.com> | 2020-01-09 18:07:47 -0500 |
commit | dcade880e342407fb76bdf4529b886c3ebedc6b3 (patch) | |
tree | 17a715c9290fc4db29d3e7a9d0800893a493a813 | |
parent | 9e5b959036ff76dda397998d1185b0ec0ae58568 (diff) |
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: Lyude Paul <lyude@redhat.com>
Reviewed-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Mikita Lipski <mikita.lipski@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
-rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 8 | ||||
-rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.h | 2 |
2 files changed, 10 insertions, 0 deletions
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 6b33a01dbba2..9c6c2815c7a1 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 @@ -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); +} 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); |