[PATCH 02/28] drm/amd/display: Don't lock phantom pipe on disabling

[Stylon Wang]

From: Alvin Lee <alvin.l...@amd.com>

[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....@amd.com>
Acked-by: Stylon Wang <stylon.w...@amd.com>
Signed-off-by: Alvin Lee <alvin.l...@amd.com>
---
 drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c 
b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
index 9834b75f1837..79befa17bb03 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
@@ -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)
-- 
2.42.0