Hotplug events reported by bridge drivers over drm_bridge_hpd_notify()
get ignored unless somebody calls drm_bridge_hpd_enable(). When the
connector for the bridge is bridge_connector, such a call is done from
drm_bridge_connector_enable_hpd().
However drm_bridge_connector_enable_hpd() is never called on init paths,
documentation suggests that it is intended for suspend/resume paths.
Hmmmm... I'm in two minds about this. The problem description is
correct, but I wonder if HPD should be enabled unconditionally here, or
if this should be left to display drivers to control.
drivers/gpu/drm/imx/dcss/dcss-kms.c enables HPD manually at init time,
other drivers don't.
It feels like this should be under control of the display controller
driver, but I can't think of a use case for not enabling HPD at init
time. Any second opinion from anyone ?
Hi.
Can we somehow move forward here?..
