Man page 9 : drm_fb_helper_hotplug_event

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 );

fb_helper
    the drm_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 driverAqs hotplug interrupt).

Note that the driver must ensure that this is only called _after_ the fb has been fully set up, i.e. after the call to drm_fb_helper_initial_config.

0 on success and a non-zero error code otherwise.

Jesse Barnes <>
Intel Corporation,
    Initial version

Laurent Pinchart <>
Ideas on board SPRL,
    Driver internals