[PATCH 19/23] drm/amd/display: Block subvp if center timing is in use

[jdhillon]

From: Alvin Lee <Alvin.Lee2 at amd.com>

[Description]
- FW scheduling algorithm doesn't take into account of it's
  a center timing
- This affects where the subvp mclk switch can be scheduled
  (prevents HUBP vline interrupt from coming in if scheduled
  incorrectly)
- Block subvp center timing cases for now

Reviewed-by: Jun Lei <Jun.Lei at amd.com>
Acked-by: Jasdeep Dhillon <jdhillon at amd.com>
Signed-off-by: Alvin Lee <Alvin.Lee2 at amd.com>
---
 .../gpu/drm/amd/display/dc/dcn32/dcn32_resource.h   |  1 +
 .../amd/display/dc/dcn32/dcn32_resource_helpers.c   | 13 +++++++++++++
 .../gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c    |  2 +-
 3 files changed, 15 insertions(+), 1 deletion(-)

diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.h b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.h
index 13fbc574910b..57ce1d670abe 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.h
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource.h
@@ -112,6 +112,7 @@ bool dcn32_subvp_in_use(struct dc *dc,
 bool dcn32_mpo_in_use(struct dc_state *context);
 
 bool dcn32_any_surfaces_rotated(struct dc *dc, struct dc_state *context);
+bool dcn32_is_center_timing(struct pipe_ctx *pipe);
 
 struct pipe_ctx *dcn32_acquire_idle_pipe_for_head_pipe_in_layer(
 		struct dc_state *state,
diff --git a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
index 04fca788c50b..e5287e5f66d5 100644
--- a/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
+++ b/drivers/gpu/drm/amd/display/dc/dcn32/dcn32_resource_helpers.c
@@ -255,6 +255,19 @@ bool dcn32_any_surfaces_rotated(struct dc *dc, struct dc_state *context)
 	return false;
 }
 
+bool dcn32_is_center_timing(struct pipe_ctx *pipe)
+{
+	bool is_center_timing = false;
+
+	if (pipe->stream) {
+		if (pipe->stream->timing.v_addressable != pipe->stream->dst.height ||
+				pipe->stream->timing.v_addressable != pipe->stream->src.height) {
+			is_center_timing = true;
+		}
+	}
+	return is_center_timing;
+}
+
 /**
  * *******************************************************************************************
  * dcn32_determine_det_override: Determine DET allocation for each pipe
diff --git a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
index 13e5542a7028..e7459fd50bf9 100644
--- a/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
+++ b/drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c
@@ -691,7 +691,7 @@ static bool dcn32_assign_subvp_pipe(struct dc *dc,
 		 *   to combine this with SubVP can cause issues with the scheduling).
 		 * - Not TMZ surface
 		 */
-		if (pipe->plane_state && !pipe->top_pipe &&
+		if (pipe->plane_state && !pipe->top_pipe && !dcn32_is_center_timing(pipe) &&
 				pipe->stream->mall_stream_config.type == SUBVP_NONE && refresh_rate < 120 && !pipe->plane_state->address.tmz_surface &&
 				vba->ActiveDRAMClockChangeLatencyMarginPerState[vba->VoltageLevel][vba->maxMpcComb][vba->pipe_plane[pipe_idx]] <= 0) {
 			while (pipe) {
-- 
2.34.1