[usb] Add USB_INTERRUPT_OUT internal type

Signed-off-by: Michael Brown <mcb30@ipxe.org>

src/drivers/bus/usb.c

 	burst = ( descx ? descx->burst : USB_ENDPOINT_BURST ( sizes ) );
 
 	/* Calculate interval */
-	if ( type == USB_INTERRUPT ) {
+	if ( ( type & USB_ENDPOINT_ATTR_TYPE_MASK ) ==
+	     USB_ENDPOINT_ATTR_INTERRUPT ) {
 		if ( port->speed >= USB_SPEED_HIGH ) {
 			/* 2^(desc->interval-1) is a microframe count */
 			interval = ( 1 << ( desc->interval - 1 ) );

src/drivers/usb/usbhub.c

 
 	/* Locate interrupt endpoint descriptor */
 	if ( ( rc = usb_endpoint_described ( &hubdev->intr, config, interface,
-					     USB_INTERRUPT, 0 ) ) != 0 ) {
+					     USB_INTERRUPT_IN, 0 ) ) != 0 ) {
 		DBGC ( hubdev, "HUB %s could not describe interrupt endpoint: "
 		       "%s\n", hubdev->name, strerror ( rc ) );
 		goto err_endpoint;

src/drivers/usb/usbnet.c

 
 		/* Describe interrupt endpoint */
 		if ( ( rc = usb_endpoint_described ( &usbnet->intr, config,
-						     desc, USB_INTERRUPT,
+						     desc, USB_INTERRUPT_IN,
 						     0 ) ) != 0 )
 			continue;
 

src/include/ipxe/usb.h

 /** Bulk IN endpoint (internal) type */
 #define USB_BULK_IN ( USB_ENDPOINT_ATTR_BULK | USB_DIR_IN )
 
-/** Interrupt endpoint (internal) type */
-#define USB_INTERRUPT ( USB_ENDPOINT_ATTR_INTERRUPT | USB_DIR_IN )
+/** Interrupt IN endpoint (internal) type */
+#define USB_INTERRUPT_IN ( USB_ENDPOINT_ATTR_INTERRUPT | USB_DIR_IN )
+
+/** Interrupt OUT endpoint (internal) type */
+#define USB_INTERRUPT_OUT ( USB_ENDPOINT_ATTR_INTERRUPT | USB_DIR_OUT )
 
 /** USB endpoint MTU */
 #define USB_ENDPOINT_MTU(sizes) ( ( (sizes) >> 0 ) & 0x07ff )