d740e0bf8e
[Why] configure/call DC interface for DP2 mst support. This is needed to make DP2 mst work. [How] - add encoding type, logging, mst update/reduce payload functions Use the link encoding to determine the DP type (1.4 or 2.0) and add a flag to dc_stream_update to determine whether to increase/reduce payloads. v2: * add DP_UNKNOWN_ENCODING handling Signed-off-by: Fangzhi Zuo <Jerry.Zuo@amd.com> Reviewed-by: "Lin, Wayne" <Wayne.Lin@amd.com> Signed-off-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com> Signed-off-by: Lyude Paul <lyude@redhat.com> Link: https://patchwork.freedesktop.org/patch/msgid/20211025223825.301703-4-lyude@redhat.com