#ifndef US122L_H
  #define US122L_H
  
  
  struct us122l {

  	struct usb_device	*dev;
  	int			card_index;

  	int			stride;
  	struct usb_stream_kernel sk;
  
  	struct mutex		mutex;
  	struct file		*first;
  	unsigned		second_periods_polled;
  	struct file		*master;
  	struct file		*slave;

  	struct list_head	midi_list;

  
  	atomic_t		mmap_count;
  };
  
  
  #define US122L(c) ((struct us122l *)(c)->private_data)
  
  #define NAME_ALLCAPS "US-122L"
  
  #define USB_ID_US122L 0x800E
  #define USB_ID_US144 0x800F

  #define USB_ID_US122MKII 0x8021
  #define USB_ID_US144MKII 0x8020

  
  #endif