drm/amd/display: reset drr programming on pipe reset

[why]
drr is still enabled after driver is unloaded causing black screen

[how]
disable drr during pipe reset.
Signed-off-by: Wenjing Liu <Wenjing.Liu@amd.com>
Reviewed-by: Jun Lei <Jun.Lei@amd.com>
Acked-by: Leo Li <sunpeng.li@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>

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

@@ -823,6 +823,9 @@ static void dcn10_reset_back_end_for_pipe(
 		pipe_ctx->stream_res.tg->funcs->disable_crtc(pipe_ctx->stream_res.tg);
 
 		pipe_ctx->stream_res.tg->funcs->enable_optc_clock(pipe_ctx->stream_res.tg, false);
+		if (pipe_ctx->stream_res.tg->funcs->set_drr)
+			pipe_ctx->stream_res.tg->funcs->set_drr(
+					pipe_ctx->stream_res.tg, NULL);
 	}
 
 	for (i = 0; i < dc->res_pool->pipe_count; i++)

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

@@ -1834,6 +1834,10 @@ static void dcn20_reset_back_end_for_pipe(
 		if (pipe_ctx->stream_res.tg->funcs->set_odm_bypass)
 			pipe_ctx->stream_res.tg->funcs->set_odm_bypass(
 					pipe_ctx->stream_res.tg, &pipe_ctx->stream->timing);
+
+		if (pipe_ctx->stream_res.tg->funcs->set_drr)
+			pipe_ctx->stream_res.tg->funcs->set_drr(
+					pipe_ctx->stream_res.tg, NULL);
 	}
 
 	for (i = 0; i < dc->res_pool->pipe_count; i++)