drm/amd/display: SubVP pipe split case

[Why and How]
For SubVP pipe split case, pass in split index for
main and phantom pipes to ensure that the P-State
sequence will force P-State for all required pipes.
Reviewed-by: Nevenko Stupar <Nevenko.Stupar@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2@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/dc_dmub_srv.c

@@ -674,12 +674,32 @@ static void populate_subvp_cmd_pipe_info(struct dc *dc,
 	pipe_data->pipe_config.subvp_data.processing_delay_lines =
 			div64_u64(((uint64_t)(dc->caps.subvp_fw_processing_delay_us) * ((uint64_t)phantom_timing->pix_clk_100hz * 100) +
 					((uint64_t)phantom_timing->h_total * 1000000 - 1)), ((uint64_t)phantom_timing->h_total * 1000000));
+
+	/* TODO: Uncomment once FW headers are promoted
+	if (subvp_pipe->bottom_pipe) {
+		pipe_data->pipe_config.subvp_data.main_split_pipe_index = subvp_pipe->bottom_pipe->pipe_idx;
+	} else if (subvp_pipe->next_odm_pipe) {
+		pipe_data->pipe_config.subvp_data.main_split_pipe_index = subvp_pipe->next_odm_pipe->pipe_idx;
+	} else {
+		pipe_data->pipe_config.subvp_data.main_split_pipe_index = 0;
+	}
+	*/
+
 	// Find phantom pipe index based on phantom stream
 	for (j = 0; j < dc->res_pool->pipe_count; j++) {
 		struct pipe_ctx *phantom_pipe = &context->res_ctx.pipe_ctx[j];
 
 		if (phantom_pipe->stream == subvp_pipe->stream->mall_stream_config.paired_stream) {
 			pipe_data->pipe_config.subvp_data.phantom_pipe_index = phantom_pipe->pipe_idx;
+			/* TODO: Uncomment once FW headers are promoted
+			if (phantom_pipe->bottom_pipe) {
+				pipe_data->pipe_config.subvp_data.phantom_split_pipe_index = phantom_pipe->bottom_pipe->pipe_idx;
+			} else if (phantom_pipe->next_odm_pipe) {
+				pipe_data->pipe_config.subvp_data.phantom_split_pipe_index = phantom_pipe->next_odm_pipe->pipe_idx;
+			} else {
+				pipe_data->pipe_config.subvp_data.phantom_split_pipe_index = 0;
+			}
+			*/
 			break;
 		}
 	}
@@ -724,7 +744,9 @@ void dc_dmub_setup_subvp_dmub_command(struct dc *dc,
 		if (!pipe->stream)
 			continue;
 
-		if (pipe->plane_state && !pipe->top_pipe &&
+		/* For SubVP pipe count, only count the top most (ODM / MPC) pipe
+		 */
+		if (pipe->plane_state && !pipe->top_pipe && !pipe->prev_odm_pipe &&
 				pipe->stream->mall_stream_config.type == SUBVP_MAIN)
 			subvp_pipes[subvp_count++] = pipe;
 	}
@@ -737,7 +759,12 @@ void dc_dmub_setup_subvp_dmub_command(struct dc *dc,
 			if (!pipe->stream)
 				continue;
 
+			/* When populating subvp cmd info, only pass in the top most (ODM / MPC) pipe.
+			 * Any ODM or MPC splits being used in SubVP will be handled internally in
+			 * populate_subvp_cmd_pipe_info
+			 */
 			if (pipe->plane_state && pipe->stream->mall_stream_config.paired_stream &&
+					!pipe->top_pipe && !pipe->prev_odm_pipe &&
 					pipe->stream->mall_stream_config.type == SUBVP_MAIN) {
 				populate_subvp_cmd_pipe_info(dc, context, &cmd, pipe, cmd_pipe_index++);
 			} else if (pipe->plane_state && pipe->stream->mall_stream_config.type == SUBVP_NONE) {

drivers/gpu/drm/amd/display/dc/dcn20/dcn20_hwseq.c

@@ -1906,10 +1906,13 @@ void dcn20_post_unlock_program_front_end(
 			 * can underflow due to HUBP_VTG_SEL programming if done in the regular front end
 			 * programming sequence).
 			 */
-			if (pipe->stream && pipe->stream->mall_stream_config.type == SUBVP_PHANTOM) {
-				if (dc->hwss.update_phantom_vp_position)
-					dc->hwss.update_phantom_vp_position(dc, context, pipe);
-				dcn20_program_pipe(dc, pipe, context);
+			while (pipe) {
+				if (pipe->stream && pipe->stream->mall_stream_config.type == SUBVP_PHANTOM) {
+					if (dc->hwss.update_phantom_vp_position)
+						dc->hwss.update_phantom_vp_position(dc, context, pipe);
+					dcn20_program_pipe(dc, pipe, context);
+				}
+				pipe = pipe->bottom_pipe;
 			}
 		}
 	}

drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c

@@ -1160,17 +1160,23 @@ static void dcn32_full_validate_bw_helper(struct dc *dc,
 				vba->VoltageLevel = *vlevel;
 			}
 		} else {
-			// only call dcn20_validate_apply_pipe_split_flags if we found a supported config
-			memset(split, 0, MAX_PIPES * sizeof(int));
-			memset(merge, 0, MAX_PIPES * sizeof(bool));
-			*vlevel = dcn20_validate_apply_pipe_split_flags(dc, context, *vlevel, split, merge);
-			vba->VoltageLevel = *vlevel;
-
 			// Most populate phantom DLG params before programming hardware / timing for phantom pipe
 			DC_FP_START();
 			dcn32_helper_populate_phantom_dlg_params(dc, context, pipes, *pipe_cnt);
 			DC_FP_END();
 
+			/* Call validate_apply_pipe_split flags after calling DML getters for
+			 * phantom dlg params, or some of the VBA params indicating pipe split
+			 * can be overwritten by the getters.
+			 *
+			 * When setting up SubVP config, all pipes are merged before attempting to
+			 * add phantom pipes. If pipe split (ODM / MPC) is required, both the main
+			 * and phantom pipes will be split in the regular pipe splitting sequence.
+			 */
+			memset(split, 0, MAX_PIPES * sizeof(int));
+			memset(merge, 0, MAX_PIPES * sizeof(bool));
+			*vlevel = dcn20_validate_apply_pipe_split_flags(dc, context, *vlevel, split, merge);
+			vba->VoltageLevel = *vlevel;
 			// Note: We can't apply the phantom pipes to hardware at this time. We have to wait
 			// until driver has acquired the DMCUB lock to do it safely.
 		}