drm/amd/display: ensure FS is enabled before sending request to DMUB for FS changes

[Why]
ignore_msa_timing_param indicates FS is capable but not necessarily enabled

[How]
add check for either allow_freesync or vrr_active_variable to confirm FS is enabled
Reviewed-by: Alvin Lee <alvin.lee2@amd.com>
Acked-by: Wayne Lin <wayne.lin@amd.com>
Signed-off-by: Samson Tam <samson.tam@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

@@ -552,7 +552,8 @@ static void populate_subvp_cmd_vblank_pipe_info(struct dc *dc,
 	pipe_data->pipe_config.vblank_data.vblank_end =
 			vblank_pipe->stream->timing.v_total - vblank_pipe->stream->timing.v_front_porch - vblank_pipe->stream->timing.v_addressable;
 
-	if (vblank_pipe->stream->ignore_msa_timing_param)
+	if (vblank_pipe->stream->ignore_msa_timing_param &&
+		(vblank_pipe->stream->allow_freesync || vblank_pipe->stream->vrr_active_variable))
 		populate_subvp_cmd_drr_info(dc, pipe, vblank_pipe, pipe_data);
 }
 
@@ -645,7 +646,8 @@ static void populate_subvp_cmd_pipe_info(struct dc *dc,
 			main_timing->v_total - main_timing->v_front_porch - main_timing->v_addressable;
 	pipe_data->pipe_config.subvp_data.mall_region_lines = phantom_timing->v_addressable;
 	pipe_data->pipe_config.subvp_data.main_pipe_index = subvp_pipe->stream_res.tg->inst;
-	pipe_data->pipe_config.subvp_data.is_drr = subvp_pipe->stream->ignore_msa_timing_param;
+	pipe_data->pipe_config.subvp_data.is_drr = subvp_pipe->stream->ignore_msa_timing_param &&
+		(subvp_pipe->stream->allow_freesync || subvp_pipe->stream->vrr_active_variable);
 
 	/* Calculate the scaling factor from the src and dst height.
 	 * e.g. If 3840x2160 being downscaled to 1920x1080, the scaling factor is 1/2.