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drm/amd/display: Clearly states if long or short HPD event in dmesg logs

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[Why]
The log "DMUB HPD callback" is crucial to identify when DP tunneling
is been established and driver is notified of this event from DMUB.
Same log is shared for long and short hotplug event and we need to
check trailing DC debug log to distinguish between them two, making
debugging on DPIA related issues a bit more troublesome.

[How]
Clearly states in dmesg logs whether this is a long or short hotplug
event.

Reviewed-by: Hamza Mahfooz <Hamza.Mahfooz@amd.com>
Acked-by: Qingqing Zhuo <qingqing.zhuo@amd.com>
Signed-off-by: Stylon Wang <stylon.wang@amd.com>
Tested-by: Daniel Wheeler <daniel.wheeler@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
This commit is contained in:
Stylon Wang 2023-03-01 23:56:51 +08:00 committed by Alex Deucher
parent 7108a1c127
commit c416a9e4e3
1 changed files with 8 additions and 1 deletions
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9
drivers/gpu/drm/amd/display/amdgpu_dm/amdgpu_dm.c
View File

@ -713,7 +713,14 @@ static void dmub_hpd_callback(struct amdgpu_device *adev,
drm_for_each_connector_iter(connector, &iter) {
aconnector = to_amdgpu_dm_connector(connector);
if (link && aconnector->dc_link == link) {
DRM_INFO("DMUB HPD callback: link_index=%u\n", link_index);
if (notify->type == DMUB_NOTIFICATION_HPD)
DRM_INFO("DMUB HPD callback: link_index=%u\n", link_index);
else if (notify->type == DMUB_NOTIFICATION_HPD_IRQ)
DRM_INFO("DMUB HPD IRQ callback: link_index=%u\n", link_index);
else
DRM_WARN("DMUB Unknown HPD callback type %d, link_index=%u\n",
notify->type, link_index);
hpd_aconnector = aconnector;
break;
}