47 bool iio_event_enabled(const struct iio_event_interface *ev_int)  in iio_event_enabled()  argument
49 	return !!test_bit(IIO_BUSY_BIT_POS, &ev_int->flags);  in iio_event_enabled()
69 	struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;  in iio_push_event()  local
73 	if (!ev_int)  in iio_push_event()
77 	if (iio_event_enabled(ev_int)) {  in iio_push_event()
82 		copied = kfifo_put(&ev_int->det_events, ev);  in iio_push_event()
84 			wake_up_poll(&ev_int->wait, EPOLLIN);  in iio_push_event()
104 	struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;  in iio_event_poll()  local
110 	poll_wait(filep, &ev_int->wait, wait);  in iio_event_poll()
112 	if (!kfifo_is_empty(&ev_int->det_events))  in iio_event_poll()
125 	struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;  in iio_event_chrdev_read()  local
136 		if (kfifo_is_empty(&ev_int->det_events)) {  in iio_event_chrdev_read()
140 			ret = wait_event_interruptible(ev_int->wait,  in iio_event_chrdev_read()
141 					!kfifo_is_empty(&ev_int->det_events) ||  in iio_event_chrdev_read()
149 		if (mutex_lock_interruptible(&ev_int->read_lock))  in iio_event_chrdev_read()
151 		ret = kfifo_to_user(&ev_int->det_events, buf, count, &copied);  in iio_event_chrdev_read()
152 		mutex_unlock(&ev_int->read_lock);  in iio_event_chrdev_read()
175 	struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;  in iio_event_chrdev_release()  local
177 	clear_bit(IIO_BUSY_BIT_POS, &ev_int->flags);  in iio_event_chrdev_release()
195 	struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;  in iio_event_getfd()  local
198 	if (ev_int == NULL)  in iio_event_getfd()
205 	if (test_and_set_bit(IIO_BUSY_BIT_POS, &ev_int->flags)) {  in iio_event_getfd()
215 		clear_bit(IIO_BUSY_BIT_POS, &ev_int->flags);  in iio_event_getfd()
218 		kfifo_reset_out(&ev_int->det_events);  in iio_event_getfd()
546 static void iio_setup_ev_int(struct iio_event_interface *ev_int)  in iio_setup_ev_int()  argument
548 	INIT_KFIFO(ev_int->det_events);  in iio_setup_ev_int()
549 	init_waitqueue_head(&ev_int->wait);  in iio_setup_ev_int()
550 	mutex_init(&ev_int->read_lock);  in iio_setup_ev_int()
575 	struct iio_event_interface *ev_int;  in iio_device_register_eventset()  local
584 	ev_int = kzalloc(sizeof(*ev_int), GFP_KERNEL);  in iio_device_register_eventset()
585 	if (!ev_int)  in iio_device_register_eventset()
588 	iio_dev_opaque->event_interface = ev_int;  in iio_device_register_eventset()
590 	INIT_LIST_HEAD(&ev_int->dev_attr_list);  in iio_device_register_eventset()
592 	iio_setup_ev_int(ev_int);  in iio_device_register_eventset()
606 	ev_int->group.name = iio_event_group_name;  in iio_device_register_eventset()
607 	ev_int->group.attrs = kcalloc(attrcount + 1,  in iio_device_register_eventset()
608 				      sizeof(ev_int->group.attrs[0]),  in iio_device_register_eventset()
610 	if (ev_int->group.attrs == NULL) {  in iio_device_register_eventset()
615 		memcpy(ev_int->group.attrs,  in iio_device_register_eventset()
617 		       sizeof(ev_int->group.attrs[0]) * attrcount_orig);  in iio_device_register_eventset()
620 	list_for_each_entry(p, &ev_int->dev_attr_list, l)  in iio_device_register_eventset()
621 		ev_int->group.attrs[attrn++] = &p->dev_attr.attr;  in iio_device_register_eventset()
623 	ret = iio_device_register_sysfs_group(indio_dev, &ev_int->group);  in iio_device_register_eventset()
627 	ev_int->ioctl_handler.ioctl = iio_event_ioctl;  in iio_device_register_eventset()
629 					  &ev_int->ioctl_handler);  in iio_device_register_eventset()
634 	kfree(ev_int->group.attrs);  in iio_device_register_eventset()
636 	iio_free_chan_devattr_list(&ev_int->dev_attr_list);  in iio_device_register_eventset()
637 	kfree(ev_int);  in iio_device_register_eventset()
661 	struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;  in iio_device_unregister_eventset()  local
663 	if (ev_int == NULL)  in iio_device_unregister_eventset()
666 	iio_device_ioctl_handler_unregister(&ev_int->ioctl_handler);  in iio_device_unregister_eventset()
667 	iio_free_chan_devattr_list(&ev_int->dev_attr_list);  in iio_device_unregister_eventset()
668 	kfree(ev_int->group.attrs);  in iio_device_unregister_eventset()
669 	kfree(ev_int);  in iio_device_unregister_eventset()