drm/amd/display: fix unbounded requesting for high pixel rate modes on dcn315

Unbounded requesting is getting configured for odm mode calculations which
is incorrect. This change checks whether mode requires odm ahead of time.
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Tom Chung <chiahsuan.chung@amd.com>
Signed-off-by: Dmytro Laktyushkin <Dmytro.Laktyushkin@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/dcn315/dcn315_resource.c

@@ -1707,7 +1707,9 @@ static int dcn315_populate_dml_pipes_from_context(
 			dc->config.enable_4to1MPC = true;
 			context->bw_ctx.dml.ip.det_buffer_size_kbytes =
 					(max_usable_det / DCN3_15_CRB_SEGMENT_SIZE_KB / 4) * DCN3_15_CRB_SEGMENT_SIZE_KB;
-		} else if (!is_dual_plane(pipe->plane_state->format) && pipe->plane_state->src_rect.width <= 5120) {
+		} else if (!is_dual_plane(pipe->plane_state->format)
+				&& pipe->plane_state->src_rect.width <= 5120
+				&& pipe->stream->timing.pix_clk_100hz < dcn_get_max_non_odm_pix_rate_100hz(&dc->dml.soc)) {
 			/* Limit to 5k max to avoid forced pipe split when there is not enough detile for swath */
 			context->bw_ctx.dml.ip.det_buffer_size_kbytes = 192;
 			pipes[0].pipe.src.unbounded_req_mode = true;

drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.c

@@ -807,3 +807,8 @@ void dcn316_update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_param
 	else
 		dml_init_instance(&dc->dml, &dcn3_16_soc, &dcn3_16_ip, DML_PROJECT_DCN31_FPGA);
 }
+
+int dcn_get_max_non_odm_pix_rate_100hz(struct _vcs_dpi_soc_bounding_box_st *soc)
+{
+	return soc->clock_limits[0].dispclk_mhz * 10000.0 / (1.0 + soc->dcn_downspread_percent / 100.0);
+}

drivers/gpu/drm/amd/display/dc/dml/dcn31/dcn31_fpu.h

@@ -46,6 +46,7 @@ void dcn31_calculate_wm_and_dlg_fp(
 void dcn31_update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_params);
 void dcn315_update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_params);
 void dcn316_update_bw_bounding_box(struct dc *dc, struct clk_bw_params *bw_params);
+int dcn_get_max_non_odm_pix_rate_100hz(struct _vcs_dpi_soc_bounding_box_st *soc);
 
 int dcn31x_populate_dml_pipes_from_context(struct dc *dc,
 					  struct dc_state *context,