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drm/amd/display: Gate HDMI FRL status polling on active FRL link rate

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[Why]
hdmi_frl_status_polling_work() skipped any link whose connector_signal
was not SIGNAL_TYPE_HDMI_FRL. connector_signal is not reliably set to
SIGNAL_TYPE_HDMI_FRL while a link is actually running FRL, so links that
were operating in FRL mode were skipped and their status flags never got
polled, missing link-retrain events.

[How]
Use frl_link_settings.frl_link_rate to decide whether a link is running
FRL. A non-zero rate means FRL is active, so only links with a zero rate
are skipped. This ensures every link actually operating in FRL mode is
polled for status changes.

Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Fangzhi Zuo <jerry.zuo@amd.com>
Signed-off-by: Roman Li <roman.li@amd.com>
Tested-by: Dan Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Fangzhi Zuo
2026-07-17 23:46:23 -04:00
committed by Alex Deucher
parent 3df68ac6a7
commit df94112cee
1 changed files with 1 additions and 1 deletions
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2
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm_connector.c
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@@ -3068,7 +3068,7 @@ static void hdmi_frl_status_polling_work(struct work_struct *work)
if (!dc_is_hdmi_signal(dc_link->connector_signal))
continue;
if (dc_link->connector_signal != SIGNAL_TYPE_HDMI_FRL)
if (dc_link->frl_link_settings.frl_link_rate == 0)
continue;
link_update = dc_link_frl_poll_status_flag(dc_link);