Commit cbb4c9bc authored Aug 23, 2023 by Alvin Lee Committed by Alex Deucher Sep 11, 2023

drm/amd/display: Don't lock phantom pipe on disabling



[Description]
- When disabling a phantom pipe, we first enable the phantom
  OTG so the double buffer update can successfully take place
- However, want to avoid locking the phantom otherwise setting
  DPG_EN=1 for the phantom pipe is blocked (without this we could
  hit underflow due to phantom HUBP being blanked by default)

Reviewed-by: Samson Tam <samson.tam@amd.com>
Acked-by: Stylon Wang <stylon.wang@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>

parent e87a6c5b

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

+2 −1

Original line number	Diff line number	Diff line
		@@ -111,7 +111,8 @@ void dcn10_lock_all_pipes(struct dc *dc,
		if (pipe_ctx->top_pipe \|\|
		!pipe_ctx->stream \|\|
		(!pipe_ctx->plane_state && !old_pipe_ctx->plane_state) \|\|
		!tg->funcs->is_tg_enabled(tg))
		!tg->funcs->is_tg_enabled(tg) \|\|
		pipe_ctx->stream->mall_stream_config.type == SUBVP_PHANTOM)
		continue;

		if (lock)