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drm/amd/display: Fix black flash when switching from ODM2to1 to ODMBypass

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[Why]
On secondary display hotplug we switch primary
stream from ODM2to1 to ODMBypass mode. Current
logic will trigger disabling front end for this
stream.

[How]
We need to check if prev_odm_pipe is equal to NULL
in order to disable dangling planes in this scenario.

Reviewed-by: Ariel Bernstein <Eric.Bernstein@amd.com>
Acked-by: Brian Chang <Brian.Chang@amd.com>
Signed-off-by: Vladimir Stempen <vladimir.stempen@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Vladimir Stempen 2022-08-19 18:32:01 -04:00 committed by Alex Deucher
parent d6f84bab48
commit 7b471c32e4
1 changed files with 2 additions and 1 deletions
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3
drivers/gpu/drm/amd/display/dc/core/dc.c
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@ -1094,7 +1094,8 @@ static void disable_dangling_plane(struct dc *dc, struct dc_state *context)
dc->current_state->stream_count != context->stream_count)
should_disable = true;
if (old_stream && !dc->current_state->res_ctx.pipe_ctx[i].top_pipe) {
if (old_stream && !dc->current_state->res_ctx.pipe_ctx[i].top_pipe &&
!dc->current_state->res_ctx.pipe_ctx[i].prev_odm_pipe) {
struct pipe_ctx *old_pipe, *new_pipe;
old_pipe = &dc->current_state->res_ctx.pipe_ctx[i];