drm/amd/display: put back front end initialization sequence

[Why]
Seamless boot optimization removed proper front end power off sequence.
In driver disable enable case, this causes driver to power gate hubp
and dpp while there is still memory fetching going on, this can cause
invalid memory requests to be generated which will hang data fabric.

[How]
Put back proper front end power off sequence
Signed-off-by: Eric Yang <Eric.Yang2@amd.com>
Reviewed-by: Anthony Koo <Anthony.Koo@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Acked-by: Tony Cheng <Tony.Cheng@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c

@@ -1195,16 +1195,7 @@ static void dcn10_init_hw(struct dc *dc)
 	 * everything down.
 	 */
 	if (dcb->funcs->is_accelerated_mode(dcb) || dc->config.power_down_display_on_boot) {
-		for (i = 0; i < dc->res_pool->pipe_count; i++) {
-			struct hubp *hubp = dc->res_pool->hubps[i];
-			struct dpp *dpp = dc->res_pool->dpps[i];
-
-			hubp->funcs->hubp_init(hubp);
-			dc->res_pool->opps[i]->mpc_tree_params.opp_id = dc->res_pool->opps[i]->inst;
-			plane_atomic_power_down(dc, dpp, hubp);
-		}
-
-		apply_DEGVIDCN10_253_wa(dc);
+		dc->hwss.init_pipes(dc, dc->current_state);
 	}
 
 	for (i = 0; i < dc->res_pool->audio_count; i++) {
@@ -1375,10 +1366,6 @@ static bool dcn10_set_input_transfer_func(struct pipe_ctx *pipe_ctx,
 	return result;
 }
 
-
-
-
-
 static bool
 dcn10_set_output_transfer_func(struct pipe_ctx *pipe_ctx,
 			       const struct dc_stream_state *stream)