From: Clay King <[email protected]> [Why] When transitioning between topologies such as multi-display to single display ODM 2:1, pipes might not be freed before use.
[How] In dc_commit_streams, commit an additional, minimal transition if original transition is not seamless to ensure pipes are freed. Reviewed-by: Alvin Lee <[email protected]> Signed-off-by: Clay King <[email protected]> Signed-off-by: Wayne Lin <[email protected]> --- drivers/gpu/drm/amd/display/dc/core/dc.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/gpu/drm/amd/display/dc/core/dc.c b/drivers/gpu/drm/amd/display/dc/core/dc.c index 61d0940cd41f..c17e5843e8b7 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -2399,6 +2399,18 @@ enum dc_status dc_commit_streams(struct dc *dc, struct dc_commit_streams_params goto fail; } + /* + * If not already seamless, make transition seamless by inserting intermediate minimal transition + */ + if (dc->hwss.is_pipe_topology_transition_seamless && + !dc->hwss.is_pipe_topology_transition_seamless(dc, dc->current_state, context)) { + res = commit_minimal_transition_state(dc, context); + if (res != DC_OK) { + BREAK_TO_DEBUGGER(); + goto fail; + } + } + res = dc_commit_state_no_check(dc, context); for (i = 0; i < params->stream_count; i++) { -- 2.43.0
