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drm/amd/display: Fix pipe addition logic in calc_blocks_to_ungate DCN35

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BugLink: https://bugs.launchpad.net/bugs/2084941

[ Upstream commit 3aec7a5af4d6248b7462b7d1eb597f06d35f5ee0 ]

[Why]

Missing check for when there is new pipe configuration but both cur_pipe
and new_pipe are both populated causing update_state of DSC for that
instance not being updated correctly.

This causes some display mode changes to cause underflow since DSCCLK
is still gated when the display requires DSC.

[How]

Added another condition in the new pipe addition branch that checks if
there is a new pipe configuration and if it is not the same as cur_pipe.
cur_pipe does not necessarily have to be NULL to go in this branch.

Reviewed-by: Nicholas Kazlauskas <nicholas.kazlauskas@amd.com>
Acked-by: Roman Li <roman.li@amd.com>
Signed-off-by: Nicholas Susanto <nicholas.susanto@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>
Signed-off-by: Manuel Diewald <manuel.diewald@canonical.com>
Signed-off-by: Stefan Bader <stefan.bader@canonical.com>
This commit is contained in:
Nicholas Susanto
2024-05-07 14:01:39 -04:00
committed by Mehmet Basaran
parent cb6c4546ad
commit e1308088d1
1 changed files with 2 additions and 1 deletions
Download Patch File Download Diff File Expand all files Collapse all files
drivers/gpu/drm/amd/display/dc/hwss/dcn35/dcn35_hwseq.c
+2 -1
View File
@@ -1044,7 +1044,8 @@ void dcn35_calc_blocks_to_ungate(struct dc *dc, struct dc_state *context,
continue;
if ((!cur_pipe->plane_state && new_pipe->plane_state) ||
(!cur_pipe->stream && new_pipe->stream)) {
(!cur_pipe->stream && new_pipe->stream) ||
(cur_pipe->stream != new_pipe->stream && new_pipe->stream)) {
// New pipe addition
for (j = 0; j < PG_HW_PIPE_RESOURCES_NUM_ELEMENT; j++) {
if (j == PG_HUBP && new_pipe->plane_res.hubp)