drm/amd/display: Keep track of DSC packed PPS

[Why]
Store current packed PPS data in dc_stream_state for future use.
Reviewed-by: Aric Cyr <Aric.Cyr@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Ilya Bakoulin <Ilya.Bakoulin@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/core/dc_link_dp.c

@@ -7578,6 +7578,7 @@ bool dp_set_dsc_pps_sdp(struct pipe_ctx *pipe_ctx, bool enable, bool immediate_u
 
 		DC_LOG_DSC(" ");
 		dsc->funcs->dsc_get_packed_pps(dsc, &dsc_cfg, &dsc_packed_pps[0]);
+		memcpy(&stream->dsc_packed_pps[0], &dsc_packed_pps[0], sizeof(stream->dsc_packed_pps));
 		if (dc_is_dp_signal(stream->signal)) {
 			DC_LOG_DSC("Setting stream encoder DSC PPS SDP for engine %d\n", (int)pipe_ctx->stream_res.stream_enc->id);
 			if (is_dp_128b_132b_signal(pipe_ctx))
@@ -7595,6 +7596,7 @@ bool dp_set_dsc_pps_sdp(struct pipe_ctx *pipe_ctx, bool enable, bool immediate_u
 		}
 	} else {
 		/* disable DSC PPS in stream encoder */
+		memset(&stream->dsc_packed_pps[0], 0, sizeof(stream->dsc_packed_pps));
 		if (dc_is_dp_signal(stream->signal)) {
 			if (is_dp_128b_132b_signal(pipe_ctx))
 				pipe_ctx->stream_res.hpo_dp_stream_enc->funcs->dp_set_dsc_pps_info_packet(

drivers/gpu/drm/amd/display/dc/dc_stream.h

@@ -162,7 +162,7 @@ struct dc_stream_state {
 	struct dc_info_packet vrr_infopacket;
 	struct dc_info_packet vsc_infopacket;
 	struct dc_info_packet vsp_infopacket;
-
+	uint8_t dsc_packed_pps[128];
 	struct rect src; /* composition area */
 	struct rect dst; /* stream addressable area */