465  * @hdl:	The control handler.
482  * error will also be stored in @hdl->error.
484 int v4l2_ctrl_handler_init_class(struct v4l2_ctrl_handler *hdl,
494  * @hdl:	The control handler.
509 #define v4l2_ctrl_handler_init(hdl, nr_of_controls_hint)		\  argument
513 		v4l2_ctrl_handler_init_class(hdl, nr_of_controls_hint,	\
517 					"(" #hdl ")->_lock");		\
521 #define v4l2_ctrl_handler_init(hdl, nr_of_controls_hint)		\  argument
522 	v4l2_ctrl_handler_init_class(hdl, nr_of_controls_hint, NULL, NULL)
528  * @hdl:	The control handler.
530  * Does nothing if @hdl == NULL.
532 void v4l2_ctrl_handler_free(struct v4l2_ctrl_handler *hdl);
559  * @hdl:	The control handler.
563  * If @hdl == NULL, then this just returns 0.
565 int __v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl);
570  * @hdl:	The control handler.
574  * If @hdl == NULL, then this just returns 0.
576 int v4l2_ctrl_handler_setup(struct v4l2_ctrl_handler *hdl);
580  * @hdl:	The control handler.
588  * Does nothing if @hdl == NULL.
590 void v4l2_ctrl_handler_log_status(struct v4l2_ctrl_handler *hdl,
597  * @hdl:	The control handler.
602  * and @hdl->error is set to the error code (if it wasn't set already).
604 struct v4l2_ctrl *v4l2_ctrl_new_custom(struct v4l2_ctrl_handler *hdl,
612  * @hdl:	The control handler.
621  * ID is not known, then NULL is returned and @hdl->error is set to the
628 struct v4l2_ctrl *v4l2_ctrl_new_std(struct v4l2_ctrl_handler *hdl,
637  * @hdl:	The control handler.
654 struct v4l2_ctrl *v4l2_ctrl_new_std_menu(struct v4l2_ctrl_handler *hdl,
662  * @hdl:	The control handler.
679 struct v4l2_ctrl *v4l2_ctrl_new_std_menu_items(struct v4l2_ctrl_handler *hdl,
689  * @hdl:       The control handler.
700 struct v4l2_ctrl *v4l2_ctrl_new_std_compound(struct v4l2_ctrl_handler *hdl,
708  * @hdl:	The control handler.
721 struct v4l2_ctrl *v4l2_ctrl_new_int_menu(struct v4l2_ctrl_handler *hdl,
737  *	handler @hdl.
739  * @hdl:	The control handler.
741  *		the @hdl control handler.
744  *		device than @hdl.
749  * In case of an error @hdl->error will be set to the error code (if it
752 int v4l2_ctrl_add_handler(struct v4l2_ctrl_handler *hdl,
819  * @hdl:	The control handler.
822  * If @hdl == NULL this will return NULL as well. Will lock the handler so
825 struct v4l2_ctrl *v4l2_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id);
1287  * @hdl: Put this control handler
1292 static inline void v4l2_ctrl_request_hdl_put(struct v4l2_ctrl_handler *hdl)  in v4l2_ctrl_request_hdl_put()  argument
1294 	if (hdl)  in v4l2_ctrl_request_hdl_put()
1295 		media_request_object_put(&hdl->req_obj);  in v4l2_ctrl_request_hdl_put()
1301  * @hdl: The control handler from the request.
1308 v4l2_ctrl_request_hdl_ctrl_find(struct v4l2_ctrl_handler *hdl, u32 id);
1316  * @hdl: pointer to &struct v4l2_ctrl_handler
1319  * If hdl == NULL then they will all return -EINVAL.
1321 int v4l2_queryctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_queryctrl *qc);
1327  * @hdl: pointer to &struct v4l2_ctrl_handler
1330  * If hdl == NULL then they will all return -EINVAL.
1332 int v4l2_query_ext_ctrl(struct v4l2_ctrl_handler *hdl,
1339  * @hdl: pointer to &struct v4l2_ctrl_handler
1342  * If hdl == NULL then they will all return -EINVAL.
1344 int v4l2_querymenu(struct v4l2_ctrl_handler *hdl, struct v4l2_querymenu *qm);
1350  * @hdl: pointer to &struct v4l2_ctrl_handler
1353  * If hdl == NULL then they will all return -EINVAL.
1355 int v4l2_g_ctrl(struct v4l2_ctrl_handler *hdl, struct v4l2_control *ctrl);
1362  * @hdl: pointer to &struct v4l2_ctrl_handler
1366  * If hdl == NULL then they will all return -EINVAL.
1368 int v4l2_s_ctrl(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl,
1375  * @hdl: pointer to &struct v4l2_ctrl_handler
1380  * If hdl == NULL then they will all return -EINVAL.
1382 int v4l2_g_ext_ctrls(struct v4l2_ctrl_handler *hdl, struct video_device *vdev,
1389  * @hdl: pointer to &struct v4l2_ctrl_handler
1394  * If hdl == NULL then they will all return -EINVAL.
1396 int v4l2_try_ext_ctrls(struct v4l2_ctrl_handler *hdl,
1406  * @hdl: pointer to &struct v4l2_ctrl_handler
1411  * If hdl == NULL then they will all return -EINVAL.
1413 int v4l2_s_ext_ctrls(struct v4l2_fh *fh, struct v4l2_ctrl_handler *hdl,
1442  * @hdl: pointer to &struct v4l2_ctrl_handler to register controls on
1454  * Controls already registered by the caller with the @hdl control handler are
1460 int v4l2_ctrl_new_fwnode_properties(struct v4l2_ctrl_handler *hdl,