drm_fb_helper_hotplug_event — respond to a hotplug notification by probing all the outputs attached to the fb
int drm_fb_helper_hotplug_event ( | struct drm_fb_helper * fb_helper); |
Scan the connectors attached to the fb_helper and try to put together a setup after *notification of a change in output configuration.
Called at runtime, takes the mode config locks to be able to check/change the modeset configuration. Must be run from process context (which usually means either the output polling work or a work item launched from the driver's hotplug interrupt).
Note that drivers may call this even before calling drm_fb_helper_initial_config but only aftert drm_fb_helper_init. This allows for a race-free fbcon setup and will make sure that the fbdev emulation will not miss any hotplug events.