int usb_emul_bulk(struct udevice *emul, struct usb_device *udev,
unsigned long pipe, void *buffer, int length);
+/**
+ * usb_emul_int() - Send an interrupt packet to an emulator
+ *
+ * @emul: Emulator device
+ * @udev: USB device (which the emulator is causing to appear)
+ * See struct dm_usb_ops for details on other parameters
+ * @return 0 if OK, -ve on error
+ */
+int usb_emul_int(struct udevice *emul, struct usb_device *udev,
+ unsigned long pipe, void *buffer, int length, int interval);
+
/**
* usb_emul_find() - Find an emulator for a particular device
*