include/media/v4l2-event.h

1 /* SPDX-License-Identifier: GPL-2.0-only */
3  * v4l2-event.h
7  * Copyright (C) 2009--2010 Nokia Corporation.
25  * struct v4l2_kevent - Internal kernel event struct.
26  * @list:	List node for the v4l2_fh->available list.
39  * struct v4l2_subscribed_event_ops - Subscribed event operations.
54  * struct v4l2_subscribed_event - Internal struct representing a subscribed
57  * @list:	List node for the v4l2_fh->subscribed list.
60  * @flags:	Copy of v4l2_event_subscription->flags.
62  * @node:	List node that hooks into the object's event list
76 	struct list_head	node;  member
85  * v4l2_event_dequeue - Dequeue events from video device.
95  * v4l2_event_queue - Queue events to video device.
109  * v4l2_event_queue_fh - Queue events to video device.
124  * v4l2_event_pending - Check if an event is available
133  * v4l2_event_subscribe - Subscribes to an event
136  * @sub: pointer to &struct v4l2_event_subscription
146 			 const struct v4l2_event_subscription *sub,
150  * v4l2_event_unsubscribe - Unsubscribes to an event
153  * @sub: pointer to &struct v4l2_event_subscription
156 			   const struct v4l2_event_subscription *sub);
158  * v4l2_event_unsubscribe_all - Unsubscribes to all events
165  * v4l2_event_subdev_unsubscribe - Subdev variant of v4l2_event_unsubscribe()
169  * @sub: pointer to &struct v4l2_event_subscription
178 				  struct v4l2_event_subscription *sub);
180  * v4l2_src_change_event_subscribe - helper function that calls
184  * @sub: pointer to &struct v4l2_event_subscription
187 				    const struct v4l2_event_subscription *sub);
189  * v4l2_src_change_event_subdev_subscribe - Variant of v4l2_event_subscribe(),
194  * @sub: pointer to &struct v4l2_event_subscription
198 					   struct v4l2_event_subscription *sub);