drm/amd/display: Program VSC SDP colorimetry for all DP sinks >= 1.4

In order for display colorimetry to work correctly on DP displays
we need to send the VSC SDP packet. We should only do so for
panels with DPCD revision greater or equal to 1.4 as older
receivers might have problems with it.

Cc: stable@vger.kernel.org
Cc: Joshua Ashton <joshua@froggi.es>
Cc: Xaver Hugl <xaver.hugl@gmail.com>
Cc: Melissa Wen <mwen@igalia.com>
Cc: Agustin Gutierrez <Agustin.Gutierrez@amd.com>
Reviewed-by: Agustin Gutierrez <agustin.gutierrez@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz@amd.com>
Signed-off-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
index 6cf0d5f276feb8de133a7f74204eeff6904f5348..d112ce6c812ceeda1208d327683468d49f6f3bb4 100644 (file)
--- a/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
+++ b/drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
@@ -6318,7 +6318,9 @@ create_stream_for_sink(struct drm_connector *connector,
        if (stream->signal == SIGNAL_TYPE_HDMI_TYPE_A)
                mod_build_hf_vsif_infopacket(stream, &stream->vsp_infopacket);
 
-       if (stream->link->psr_settings.psr_feature_enabled || stream->link->replay_settings.replay_feature_enabled) {
+       if (stream->signal == SIGNAL_TYPE_DISPLAY_PORT ||
+           stream->signal == SIGNAL_TYPE_DISPLAY_PORT_MST ||
+           stream->signal == SIGNAL_TYPE_EDP) {
                //
                // should decide stream support vsc sdp colorimetry capability
                // before building vsc info packet
@@ -6328,7 +6330,8 @@ create_stream_for_sink(struct drm_connector *connector,
                        stream->use_vsc_sdp_for_colorimetry =
                                aconnector->dc_sink->is_vsc_sdp_colorimetry_supported;
                } else {
-                       if (stream->link->dpcd_caps.dprx_feature.bits.VSC_SDP_COLORIMETRY_SUPPORTED)
+                       if (stream->link->dpcd_caps.dpcd_rev.raw >= 0x14 &&
+                           stream->link->dpcd_caps.dprx_feature.bits.VSC_SDP_COLORIMETRY_SUPPORTED)
                                stream->use_vsc_sdp_for_colorimetry = true;
                }
                if (stream->out_transfer_func->tf == TRANSFER_FUNCTION_GAMMA22)