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

[Hamza Mahfooz]

From: Dillon Varone <dillon.var...@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.le...@amd.com>
Reviewed-by: Jun Lei <jun....@amd.com>
Acked-by: Hamza Mahfooz <hamza.mahf...@amd.com>
Signed-off-by: Dillon Varone <dillon.var...@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