drm/amd/display: Check hdr support before setting.

In case of programing info frame to
some monitors don't support HDR, it will
result in black screen or corruption when
unplug monitor.
By checking hdr flag to avoid unnecessary
setting for monitors don't support HDR.

Signed-off-by: Yongqiang Sun <yongqiang.sun@amd.com>
Acked-by: Harry Wentland <Harry.Wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

diff --git a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
index 80fe6b9..a82f2d6 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
+++ b/drivers/gpu/drm/amd/display/dc/core/dc_resource.c
@@ -1742,6 +1742,9 @@ static void set_hdr_static_info_packet(
 
        hdr_metadata = surface->public.hdr_static_ctx;
 
+       if (!hdr_metadata.is_hdr)
+               return;
+
        if (dc_is_hdmi_signal(signal)) {
                info_packet->valid = true;
 

diff --git a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
index 82133ab..8156c6a 100644 (file)
--- a/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dce/dce_stream_encoder.c
@@ -555,18 +555,23 @@ static void dce110_stream_encoder_update_dp_info_packets(
        struct dce110_stream_encoder *enc110 = DCE110STRENC_FROM_STRENC(enc);
        uint32_t value = REG_READ(DP_SEC_CNTL);
 
-       dce110_update_generic_info_packet(
+       if (info_frame->vsc.valid)
+               dce110_update_generic_info_packet(
+                                       enc110,
+                                       0,  /* packetIndex */
+                                       &info_frame->vsc);
+
+       if (info_frame->spd.valid)
+               dce110_update_generic_info_packet(
                                enc110,
-                               0,  /* packetIndex */
-                               &info_frame->vsc);
-       dce110_update_generic_info_packet(
-                       enc110,
-                       2,  /* packetIndex */
-                       &info_frame->spd);
-       dce110_update_generic_info_packet(
-                       enc110,
-                       3,  /* packetIndex */
-                       &info_frame->hdrsmd);
+                               2,  /* packetIndex */
+                               &info_frame->spd);
+
+       if (info_frame->hdrsmd.valid)
+               dce110_update_generic_info_packet(
+                               enc110,
+                               3,  /* packetIndex */
+                               &info_frame->hdrsmd);
 
        /* enable/disable transmission of packet(s).
        *  If enabled, packet transmission begins on the next frame