45 bool iio_event_enabled(const struct iio_event_interface *ev_int)  in iio_event_enabled()  argument
47 	return !!test_bit(IIO_BUSY_BIT_POS, &ev_int->flags);  in iio_event_enabled()
67 	struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;  in iio_push_event()  local
71 	if (!ev_int)  in iio_push_event()
75 	if (iio_event_enabled(ev_int)) {  in iio_push_event()
80 		copied = kfifo_put(&ev_int->det_events, ev);  in iio_push_event()
82 			wake_up_poll(&ev_int->wait, EPOLLIN);  in iio_push_event()
102 	struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;  in iio_event_poll()  local
108 	poll_wait(filep, &ev_int->wait, wait);  in iio_event_poll()
110 	if (!kfifo_is_empty(&ev_int->det_events))  in iio_event_poll()
123 	struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;  in iio_event_chrdev_read()  local
134 		if (kfifo_is_empty(&ev_int->det_events)) {  in iio_event_chrdev_read()
138 			ret = wait_event_interruptible(ev_int->wait,  in iio_event_chrdev_read()
139 					!kfifo_is_empty(&ev_int->det_events) ||  in iio_event_chrdev_read()
147 		if (mutex_lock_interruptible(&ev_int->read_lock))  in iio_event_chrdev_read()
149 		ret = kfifo_to_user(&ev_int->det_events, buf, count, &copied);  in iio_event_chrdev_read()
150 		mutex_unlock(&ev_int->read_lock);  in iio_event_chrdev_read()
173 	struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;  in iio_event_chrdev_release()  local
175 	clear_bit(IIO_BUSY_BIT_POS, &ev_int->flags);  in iio_event_chrdev_release()
193 	struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;  in iio_event_getfd()  local
196 	if (ev_int == NULL)  in iio_event_getfd()
203 	if (test_and_set_bit(IIO_BUSY_BIT_POS, &ev_int->flags)) {  in iio_event_getfd()
213 		clear_bit(IIO_BUSY_BIT_POS, &ev_int->flags);  in iio_event_getfd()
216 		kfifo_reset_out(&ev_int->det_events);  in iio_event_getfd()
476 static void iio_setup_ev_int(struct iio_event_interface *ev_int)  in iio_setup_ev_int()  argument
478 	INIT_KFIFO(ev_int->det_events);  in iio_setup_ev_int()
479 	init_waitqueue_head(&ev_int->wait);  in iio_setup_ev_int()
480 	mutex_init(&ev_int->read_lock);  in iio_setup_ev_int()
487 	struct iio_event_interface *ev_int;  in iio_device_register_eventset()  local
496 	ev_int = kzalloc(sizeof(struct iio_event_interface), GFP_KERNEL);  in iio_device_register_eventset()
497 	if (ev_int == NULL)  in iio_device_register_eventset()
500 	iio_dev_opaque->event_interface = ev_int;  in iio_device_register_eventset()
502 	INIT_LIST_HEAD(&ev_int->dev_attr_list);  in iio_device_register_eventset()
504 	iio_setup_ev_int(ev_int);  in iio_device_register_eventset()
518 	ev_int->group.name = iio_event_group_name;  in iio_device_register_eventset()
519 	ev_int->group.attrs = kcalloc(attrcount + 1,  in iio_device_register_eventset()
520 				      sizeof(ev_int->group.attrs[0]),  in iio_device_register_eventset()
522 	if (ev_int->group.attrs == NULL) {  in iio_device_register_eventset()
527 		memcpy(ev_int->group.attrs,  in iio_device_register_eventset()
529 		       sizeof(ev_int->group.attrs[0]) * attrcount_orig);  in iio_device_register_eventset()
532 	list_for_each_entry(p, &ev_int->dev_attr_list, l)  in iio_device_register_eventset()
533 		ev_int->group.attrs[attrn++] = &p->dev_attr.attr;  in iio_device_register_eventset()
534 	indio_dev->groups[indio_dev->groupcounter++] = &ev_int->group;  in iio_device_register_eventset()
539 	iio_free_chan_devattr_list(&ev_int->dev_attr_list);  in iio_device_register_eventset()
540 	kfree(ev_int);  in iio_device_register_eventset()
564 	struct iio_event_interface *ev_int = iio_dev_opaque->event_interface;  in iio_device_unregister_eventset()  local
566 	if (ev_int == NULL)  in iio_device_unregister_eventset()
568 	iio_free_chan_devattr_list(&ev_int->dev_attr_list);  in iio_device_unregister_eventset()
569 	kfree(ev_int->group.attrs);  in iio_device_unregister_eventset()
570 	kfree(ev_int);  in iio_device_unregister_eventset()