[PATCH 17/19] drm/amd/display: add primary pipe check when building slice table for dcn3x

[Wayne Lin <Wayne.Lin@xxxxxxx>]

From: Wenjing Liu <wenjing.liu@xxxxxxx>

[why]
There is a corner use case where the same plane pointer can be added into
dc state twice. In addition to plane state pointer check we also need to match
primary pipe before identifying the same plane.

Reviewed-by: Dillon Varone <dillon.varone@xxxxxxx>
Acked-by: Wayne Lin <wayne.lin@xxxxxxx>
Signed-off-by: Wenjing Liu <wenjing.liu@xxxxxxx>
---
 .../gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c | 16 ++++++++++------
 1 file changed, 10 insertions(+), 6 deletions(-)

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 062633af77a0..7179c2b3b1b7 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
@@ -1086,6 +1086,7 @@ struct pipe_slice_table {
 	int odm_combine_count;
 
 	struct {
+		struct pipe_ctx *pri_pipe;
 		struct dc_plane_state *plane;
 		int slice_count;
 	} mpc_combines[MAX_SURFACES];
@@ -1113,12 +1114,14 @@ static void update_slice_table_for_stream(struct pipe_slice_table *table,
 }
 
 static void update_slice_table_for_plane(struct pipe_slice_table *table,
-		struct dc_plane_state *plane, int diff)
+		struct pipe_ctx *dpp_pipe, struct dc_plane_state *plane, int diff)
 {
 	int i;
+	struct pipe_ctx *pri_dpp_pipe = resource_get_primary_dpp_pipe(dpp_pipe);
 
 	for (i = 0; i < table->mpc_combine_count; i++) {
-		if (table->mpc_combines[i].plane == plane) {
+		if (table->mpc_combines[i].plane == plane &&
+				table->mpc_combines[i].pri_pipe == pri_dpp_pipe) {
 			table->mpc_combines[i].slice_count += diff;
 			break;
 		}
@@ -1127,6 +1130,7 @@ static void update_slice_table_for_plane(struct pipe_slice_table *table,
 	if (i == table->mpc_combine_count) {
 		table->mpc_combine_count++;
 		table->mpc_combines[i].plane = plane;
+		table->mpc_combines[i].pri_pipe = pri_dpp_pipe;
 		table->mpc_combines[i].slice_count = diff;
 	}
 }
@@ -1154,7 +1158,7 @@ static void init_pipe_slice_table_from_context(
 				&context->res_ctx, dpp_pipes);
 		for (j = 0; j < count; j++)
 			if (dpp_pipes[j]->plane_state)
-				update_slice_table_for_plane(table,
+				update_slice_table_for_plane(table, dpp_pipes[j],
 						dpp_pipes[j]->plane_state, 1);
 	}
 }
@@ -1205,7 +1209,7 @@ static bool update_pipe_slice_table_with_split_flags(
 				/* merging DPP pipe of the first ODM slice means
 				 * reducing MPC slice count by 1
 				 */
-				update_slice_table_for_plane(table, pipe->plane_state, -1);
+				update_slice_table_for_plane(table, pipe, pipe->plane_state, -1);
 			updated = true;
 		}
 
@@ -1216,8 +1220,8 @@ static bool update_pipe_slice_table_with_split_flags(
 				update_slice_table_for_stream(
 						table, pipe->stream, split[i] - 1);
 			else if (!odm && resource_is_pipe_type(pipe, DPP_PIPE))
-				update_slice_table_for_plane(
-						table, pipe->plane_state, split[i] - 1);
+				update_slice_table_for_plane(table, pipe,
+						pipe->plane_state, split[i] - 1);
 			updated = true;
 		}
 	}
-- 
2.37.3