drm/amd/display: Add DP-HDMI FRL PCON Support in DC

[linux-2.6-block.git] / drivers / gpu / drm / amd / display / dc / core / dc_link.c

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_link.c b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
index 3d08f8eba402e67614a240f09fd58fe70cece860..dad7a4fdc427ec2d6c78177e86c9a7ffaac692d1 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_link.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_link.c
@@ -2750,8 +2750,23 @@ static bool dp_active_dongle_validate_timing(
                return false;
        }
 
+#if defined(CONFIG_DRM_AMD_DC_DCN)
+       if (dongle_caps->dp_hdmi_frl_max_link_bw_in_kbps > 0) { // DP to HDMI FRL converter
+               struct dc_crtc_timing outputTiming = *timing;
+
+               if (timing->flags.DSC && !timing->dsc_cfg.is_frl)
+                       /* DP input has DSC, HDMI FRL output doesn't have DSC, remove DSC from output timing */
+                       outputTiming.flags.DSC = 0;
+               if (dc_bandwidth_in_kbps_from_timing(&outputTiming) > dongle_caps->dp_hdmi_frl_max_link_bw_in_kbps)
+                       return false;
+       } else { // DP to HDMI TMDS converter
+               if (get_timing_pixel_clock_100hz(timing) > (dongle_caps->dp_hdmi_max_pixel_clk_in_khz * 10))
+                       return false;
+       }
+#else
        if (get_timing_pixel_clock_100hz(timing) > (dongle_caps->dp_hdmi_max_pixel_clk_in_khz * 10))
                return false;
+#endif
 
 #if defined(CONFIG_DRM_AMD_DC_DCN)
        }