From 75771711cb81110a7b171e3a2c699db69ff2ab96 Mon Sep 17 00:00:00 2001
From: David Zhang <dingchen.zhang@amd.com>
Date: Fri, 29 Apr 2022 17:32:56 -0400
Subject: drm/amd/display: update GSP1 generic info packet for PSRSU
Git-commit: 3a6dce778de7c120a37983d80b6ccc8c2c4ff6ec
Patch-mainline: v6.0-rc1
References: jsc#PED-1166 jsc#PED-1168 jsc#PED-1170 jsc#PED-1218 jsc#PED-1220 jsc#PED-1222 jsc#PED-1223 jsc#PED-1225 jsc#PED-2849

[why & how]
Based on PSRSU specification, every selective update frame need to use
two SDP to indicate the frame active range. So we occupy another GSP1
for PSRSU execution.

Signed-off-by: David Zhang <dingchen.zhang@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Acked-by: Patrik Jakobsson <pjakobsson@suse.de>
---
 .../display/dc/dcn30/dcn30_dio_stream_encoder.c   | 15 +++++++++++++++
 1 file changed, 15 insertions(+)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dio_stream_encoder.c b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dio_stream_encoder.c
index b683ad817106..1a26ce87c16e 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dio_stream_encoder.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn30/dcn30_dio_stream_encoder.c
@@ -419,6 +419,21 @@ void enc3_stream_encoder_update_dp_info_packets(
 				&info_frame->vsc,
 				true);
 	}
+	/* TODO: VSC SDP at packetIndex 1 should be restricted only if PSR-SU on.
+	 * There should have another Infopacket type (e.g. vsc_psrsu) for PSR_SU.
+	 * In addition, currently the driver check the valid bit then update and
+	 * send the corresponding Infopacket. For PSR-SU, the SDP only be sent
+	 * while entering PSR-SU mode. So we need another parameter(e.g. send)
+	 * in dc_info_packet to indicate which infopacket should be enabled by
+	 * default here.
+	 */
+	if (info_frame->vsc.valid) {
+		enc->vpg->funcs->update_generic_info_packet(
+				enc->vpg,
+				1,  /* packetIndex */
+				&info_frame->vsc,
+				true);
+	}
 	if (info_frame->spd.valid) {
 		enc->vpg->funcs->update_generic_info_packet(
 				enc->vpg,
-- 
2.38.1