diff options
| -rw-r--r-- | drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_mst_types.c | 18 |
1 files changed, 13 insertions, 5 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 941e96f100f4..f0322e730214 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 @@ -1219,10 +1219,6 @@ static bool is_dsc_need_re_compute( if (dc_link->type != dc_connection_mst_branch) return false; - if (!(dc_link->dpcd_caps.dsc_caps.dsc_basic_caps.fields.dsc_support.DSC_SUPPORT || - dc_link->dpcd_caps.dsc_caps.dsc_basic_caps.fields.dsc_support.DSC_PASSTHROUGH_SUPPORT)) - return false; - for (i = 0; i < MAX_PIPES; i++) stream_on_link[i] = NULL; @@ -1240,7 +1236,19 @@ static bool is_dsc_need_re_compute( continue; aconnector = (struct amdgpu_dm_connector *) stream->dm_stream_context; - if (!aconnector) + if (!aconnector || !aconnector->dsc_aux) + continue; + + /* + * Check if cached virtual MST DSC caps are available and DSC is supported + * this change takes care of newer MST DSC capable devices that report their + * DPCD caps as per specifications in their Virtual DPCD registers. + + * TODO: implement the check for older MST DSC devices that do not conform to + * specifications. + */ + if (!(aconnector->dc_sink->dsc_caps.dsc_dec_caps.is_dsc_supported || + aconnector->dc_link->dpcd_caps.dsc_caps.dsc_basic_caps.fields.dsc_support.DSC_PASSTHROUGH_SUPPORT)) continue; stream_on_link[new_stream_on_link_num] = aconnector; |