After reading from receiver via DPCD, check & log if it supports MST, DSC & FEC
Cc: Aurabindo Pillai <[email protected]> Cc: Fangzhi Zuo <[email protected]> Signed-off-by: Srinivasan Shanmugam <[email protected]> --- v2: - Added %s: to print the function name. .../amd/display/dc/link/protocols/link_dp_capability.c | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c index ba98013fecd0..f93fc35a1a50 100644 --- a/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c +++ b/drivers/gpu/drm/amd/display/dc/link/protocols/link_dp_capability.c @@ -1554,6 +1554,8 @@ static bool retrieve_link_cap(struct dc_link *link) int i; struct dp_sink_hw_fw_revision dp_hw_fw_revision; const uint32_t post_oui_delay = 30; // 30ms + bool is_fec_supported = false; + bool is_dsc_supported = false; memset(dpcd_data, '\0', sizeof(dpcd_data)); memset(&down_strm_port_count, @@ -1696,6 +1698,7 @@ static bool retrieve_link_cap(struct dc_link *link) /* TODO - decouple raw mst capability from policy decision */ link->dpcd_caps.is_mst_capable = read_is_mst_supported(link); + DC_LOG_DC("%s: MST_Support: %s\n", __func__, str_yes_no(link->dpcd_caps.is_mst_capable)); get_active_converter_info(ds_port.byte, link); @@ -1803,6 +1806,12 @@ static bool retrieve_link_cap(struct dc_link *link) DP_DSC_SUPPORT, link->dpcd_caps.dsc_caps.dsc_basic_caps.raw, sizeof(link->dpcd_caps.dsc_caps.dsc_basic_caps.raw)); + if (status == DC_OK) { + is_fec_supported = link->dpcd_caps.fec_cap.raw & 0x1; + is_dsc_supported = link->dpcd_caps.dsc_caps.dsc_basic_caps.raw[0] & 0x1; + DC_LOG_DC("%s: FEC_Sink_Support: %s\n", __func__, str_yes_no(is_fec_supported)); + DC_LOG_DC("%s: DSC_Sink_Support: %s\n", __func__, str_yes_no(is_dsc_supported)); + } if (link->dpcd_caps.dongle_type != DISPLAY_DONGLE_NONE) { status = core_link_read_dpcd( link, -- 2.25.1
