[why & how]
We need to implement the VSC packet rev4 that is required by PSRSU.
Follow the eDP 1.5 spec pg. 257
Signed-off-by: David Zhang <dingchen.zhang@xxxxxxx>
---
.../display/modules/info_packet/info_packet.c | 29 +++++++++++++++++--
1 file changed, 27 insertions(+), 2 deletions(-)
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 79bc207415bc..c7d1b48c0478 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
@@ -145,8 +145,10 @@ void mod_build_vsc_infopacket(const struct dc_stream_state *stream,
stereo3dSupport = true;
}
- /*VSC packet set to 2 when DP revision >= 1.2*/
- if (stream->link->psr_settings.psr_version != DC_PSR_VERSION_UNSUPPORTED)
+ /*VSC packet set to 4 for PSR-SU, or 2 for all other PSR support cases*/
+ if (stream->link->psr_settings.psr_version == DC_PSR_VERSION_SU_1)
+ vsc_packet_revision = vsc_packet_rev4;
+ else if (stream->link->psr_settings.psr_version != DC_PSR_VERSION_UNSUPPORTED)
vsc_packet_revision = vsc_packet_rev2;
/* Update to revision 5 for extended colorimetry support */
@@ -159,6 +161,29 @@ void mod_build_vsc_infopacket(const struct dc_stream_state *stream,
if (vsc_packet_revision == vsc_packet_undefined)
return;
+ if (vsc_packet_revision == vsc_packet_rev4) {
+ /* Secondary-data Packet ID = 0*/
+ info_packet->hb0 = 0x00;
+ /* 07h - Packet Type Value indicating Video
+ * Stream Configuration packet
+ */
+ info_packet->hb1 = 0x07;
+ /* 04h = VSC SDP supporting 3D stereo + PSR/PSR2 + Y-coordinate
+ * (applies to eDP v1.4 or higher).
+ */
+ info_packet->hb2 = 0x04;
+ /* 0Eh = VSC SDP supporting 3D stereo + PSR2
+ * (HB2 = 04h), with Y-coordinate of first scan
+ * line of the SU region
+ */
+ info_packet->hb3 = 0x0E;
+
+ for (i = 0; i < 28; i++)
+ info_packet->sb[i] = 0;
+
+ info_packet->valid = true;
+ }
+
if (vsc_packet_revision == vsc_packet_rev2) {
/* Secondary-data Packet ID = 0*/
info_packet->hb0 = 0x00;
--
2.25.1
