struct hmcfgusb_dev *hmcfgusb_init(hmcfgusb_cb_fn cb, void *data);
int hmcfgusb_add_pfd(struct hmcfgusb_dev *dev, int fd, short events);
int hmcfgusb_poll(struct hmcfgusb_dev *dev, int timeout);
+void hmcfgusb_close(struct hmcfgusb_dev *dev);
+void hmcfgusb_set_debug(int d);