119 struct oxygen {  struct
120 	unsigned long addr;
121 	spinlock_t reg_lock;
122 	struct mutex mutex;
123 	struct snd_card *card;
124 	struct pci_dev *pci;
125 	struct snd_rawmidi *midi;
126 	int irq;
127 	void *model_data;
128 	unsigned int interrupt_mask;
152 	struct oxygen_model model;  argument
160 		     int (*get_model)(struct oxygen *chip,  argument