152 struct comedi_subdevice {  struct
153 	struct comedi_device *device;
154 	int index;
155 	int type;
179 	int (*insn_read)(struct comedi_device *dev, struct comedi_subdevice *s,  argument
181 	int (*insn_write)(struct comedi_device *dev, struct comedi_subdevice *s,  argument
183 	int (*insn_bits)(struct comedi_device *dev, struct comedi_subdevice *s,  argument
186 			   struct comedi_subdevice *s,  argument
190 	int (*do_cmd)(struct comedi_device *dev, struct comedi_subdevice *s);  argument
192 			  struct comedi_subdevice *s,  argument
194 	int (*poll)(struct comedi_device *dev, struct comedi_subdevice *s);  argument
195 	int (*cancel)(struct comedi_device *dev, struct comedi_subdevice *s);  argument
199 			  struct comedi_subdevice *s);  argument
201 	void (*munge)(struct comedi_device *dev, struct comedi_subdevice *s,  argument
204 	enum dma_data_direction async_dma_dir;
206 	unsigned int state;
208 	struct device *class_dev;
209 	int minor;
211 	unsigned int *readback;