Commit 0d6a8c5e authored by Simon Ser's avatar Simon Ser
Browse files

drm/sysfs: introduce drm_sysfs_connector_hotplug_event 



This function sends a hotplug uevent with a CONNECTOR property.

Signed-off-by: default avatarSimon Ser <contact@emersion.fr>
Reviewed-by: default avatarSam Ravnborg <sam@ravnborg.org>
Acked-by: default avatarHarry Wentland <harry.wentland@amd.com>
Acked-by: default avatarPekka Paalanen <pekka.paalanen@collabora.com>
Link: https://patchwork.freedesktop.org/patch/msgid/20211018084707.32253-2-contact@emersion.fr
parent 542cff78

drivers/gpu/drm/drm_sysfs.c

+25 −0
Original line number Diff line number Diff line
@@ -409,6 +409,31 @@ void drm_sysfs_hotplug_event(struct drm_device *dev) 
}

EXPORT_SYMBOL(drm_sysfs_hotplug_event);



/**

 * drm_sysfs_connector_hotplug_event - generate a DRM uevent for any connector

 * change

 * @connector: connector which has changed

 *

 * Send a uevent for the DRM connector specified by @connector. This will send

 * a uevent with the properties HOTPLUG=1 and CONNECTOR.

 */

void drm_sysfs_connector_hotplug_event(struct drm_connector *connector)

{

	struct drm_device *dev = connector->dev;

	char hotplug_str[] = "HOTPLUG=1", conn_id[21];

	char *envp[] = { hotplug_str, conn_id, NULL };



	snprintf(conn_id, sizeof(conn_id),

		 "CONNECTOR=%u", connector->base.id);



	drm_dbg_kms(connector->dev,

		    "[CONNECTOR:%d:%s] generating connector hotplug event\n",

		    connector->base.id, connector->name);



	kobject_uevent_env(&dev->primary->kdev->kobj, KOBJ_CHANGE, envp);

}

EXPORT_SYMBOL(drm_sysfs_connector_hotplug_event);



/**

 * drm_sysfs_connector_status_event - generate a DRM uevent for connector

 * property status change

include/drm/drm_sysfs.h

+1 −0
Original line number Diff line number Diff line
@@ -11,6 +11,7 @@ int drm_class_device_register(struct device *dev); 
void drm_class_device_unregister(struct device *dev);



void drm_sysfs_hotplug_event(struct drm_device *dev);

void drm_sysfs_connector_hotplug_event(struct drm_connector *connector);

void drm_sysfs_connector_status_event(struct drm_connector *connector,

				      struct drm_property *property);

#endif