[PATCH 5/8] drm/amd/display: Check hdr support before setting.

[Harry Wentland]

From: Yongqiang Sun <yongqiang.sun at amd.com>

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.

Change-Id: Ic01b8b888ab6402d6c53c37a9ab9cccd64787b0d
Signed-off-by: Yongqiang Sun <yongqiang.sun at amd.com>
Acked-by: Harry Wentland <Harry.Wentland at amd.com>
---
 drivers/gpu/drm/amd/display/dc/core/dc_resource.c  |  3 +++
 .../drm/amd/display/dc/dce/dce_stream_encoder.c    | 27 +++++++++++++---------
 2 files changed, 19 insertions(+), 11 deletions(-)

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 80fe6b9f9397..a82f2d6ea80f 100644
--- 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 82133ab3224d..8156c6a8ff5d 100644
--- 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
-- 
2.9.3