[PATCH 20/36] drm/amd/display: Fix merging dynamic ODM+MPO configs on DCN32

[Hamza Mahfooz]

From: Dillon Varone <Dillon.Varone at amd.com>

[WHY&HOW?]
When merging ODM pipes that are using MPO, we must copy the stream_res
from the new top pipe to the bottom pipe so that the overlayed plane is
not pointing to the wrong stream assets.

Reviewed-by: Martin Leung <Martin.Leung at amd.com>
Reviewed-by: Jun Lei <Jun.Lei at amd.com>
Acked-by: Hamza Mahfooz <hamza.mahfooz at amd.com>
Signed-off-by: Dillon Varone <Dillon.Varone at amd.com>
---
 drivers/gpu/drm/amd/display/dc/dml/dcn32/dcn32_fpu.c | 5 +++++
 1 file changed, 5 insertions(+)

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 a56ee04f7df9..f3f98e9a0ce6 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
@@ -1598,6 +1598,9 @@ bool dcn32_internal_validate_bw(struct dc *dc,
 					/*MPC split rules will handle this case*/
 					pipe->bottom_pipe->top_pipe = NULL;
 				} else {
+					/* when merging an ODM pipes, the bottom MPC pipe must now point to
+					 * the previous ODM pipe and its associated stream assets
+					 */
 					if (pipe->prev_odm_pipe->bottom_pipe) {
 						/* 3 plane MPO*/
 						pipe->bottom_pipe->top_pipe = pipe->prev_odm_pipe->bottom_pipe;
@@ -1607,6 +1610,8 @@ bool dcn32_internal_validate_bw(struct dc *dc,
 						pipe->bottom_pipe->top_pipe = pipe->prev_odm_pipe;
 						pipe->prev_odm_pipe->bottom_pipe = pipe->bottom_pipe;
 					}
+
+					memcpy(&pipe->bottom_pipe->stream_res, &pipe->bottom_pipe->top_pipe->stream_res, sizeof(struct stream_resource));
 				}
 			}
 
-- 
2.37.2