6.6-stable review patch. If anyone has any objections, please let me know.
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From: Clay King clayking@amd.com
[ Upstream commit ca74cc428f2b9d0170c56b473dbcfd7fa01daf2d ]
[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 alvin.lee2@amd.com Signed-off-by: Clay King clayking@amd.com Signed-off-by: Wayne Lin wayne.lin@amd.com Tested-by: Daniel Wheeler daniel.wheeler@amd.com Signed-off-by: Alex Deucher alexander.deucher@amd.com Signed-off-by: Sasha Levin sashal@kernel.org --- 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 640d010b52bec..eb71721dfb715 100644 --- a/drivers/gpu/drm/amd/display/dc/core/dc.c +++ b/drivers/gpu/drm/amd/display/dc/core/dc.c @@ -2068,6 +2068,18 @@ enum dc_status dc_commit_streams(struct dc *dc, 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 < stream_count; i++) {