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From bbcbf1e4d28e3ad16bba0da2412d7c48f8cc6728 Mon Sep 17 00:00:00 2001
From: Aric Cyr <aric.cyr@amd.com>
Date: Wed, 1 May 2019 17:05:05 -0400
Subject: [PATCH 1972/2940] 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>
---
drivers/gpu/drm/amd/display/modules/info_packet/info_packet.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)
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
--
2.17.1
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