From: Aric Cyr <aric.cyr@amd.com>
Date: Wed, 1 May 2019 21:05:05 +0000 (-0400)
Subject: drm/amd/display: Use VCP for extended colorimetry
X-Git-Url: http://git.cdn.openwrt.org/?a=commitdiff_plain;h=b33171ccaabeffa40df9744656d8d523ceb2b612;p=openwrt%2Fstaging%2Fblogic.git

drm/amd/display: Use VCP for extended colorimetry

DPRX should send the VCP extended colorimetry packet if the
sink supports DPCD rev1.4 and reports the extended colorimetry
bit.

Signed-off-by: Aric Cyr <aric.cyr@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Bhawanpreet Lakha <Bhawanpreet.Lakha@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
---

diff --git a/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c b/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c
index db06fab2ad5c..bc13c552797f 100644
--- a/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c
+++ b/drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c
@@ -63,7 +63,9 @@ void mod_build_vsc_infopacket(const struct dc_stream_state *stream,
 	if (stream->psr_version != 0)
 		vscPacketRevision = 2;
 
-	if (stream->timing.pixel_encoding == PIXEL_ENCODING_YCBCR420)
+	/* Update to revision 5 for extended colorimetry support for DPCD 1.4+ */
+	if (stream->link->dpcd_caps.dpcd_rev.raw >= 0x14 &&
+			stream->link->dpcd_caps.dprx_feature.bits.VSC_SDP_COLORIMETRY_SUPPORTED)
 		vscPacketRevision = 5;
 
 	/* VSC packet not needed based on the features