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drm/amd/display: trigger timing sync only if TG is running

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commit 6066aaf74f upstream

[Why&How]
If the timing generator isnt running, it does not make sense to trigger
a sync on the corresponding OTG. Check this condition before starting.
Otherwise, this will cause error like:

*ERROR* GSL: Timeout on reset trigger!

Fixes: dc55b106ad ("drm/amd/display: Disable phantom OTG after enable for plane disable")
Signed-off-by: Aurabindo Pillai <aurabindo.pillai@amd.com>
Reviewed-by: Rodrigo Siqueira <Rodrigo.Siqueira@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
[ NOTE: This is also 5f9f97c02d ("drm/amd/display: trigger timing sync
  only if TG is running") ]
Signed-off-by: Mario Limonciello <mario.limonciello@amd.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Aurabindo Pillai 2023-08-11 16:07:08 -05:00 committed by Greg Kroah-Hartman
parent 07152d9e87
commit b61a06eca1
1 changed files with 6 additions and 0 deletions
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6
drivers/gpu/drm/amd/display/dc/dcn10/dcn10_hw_sequencer.c
View file

@ -2284,6 +2284,12 @@ void dcn10_enable_timing_synchronization(
opp = grouped_pipes[i]->stream_res.opp;
tg = grouped_pipes[i]->stream_res.tg;
tg->funcs->get_otg_active_size(tg, &width, &height);
if (!tg->funcs->is_tg_enabled(tg)) {
DC_SYNC_INFO("Skipping timing sync on disabled OTG\n");
return;
}
if (opp->funcs->opp_program_dpg_dimensions)
opp->funcs->opp_program_dpg_dimensions(opp, width, 2*(height) + 1);
}