358 struct gpio_chip {  struct
364 	int			(*request)(struct gpio_chip *gc,  argument
366 	void			(*free)(struct gpio_chip *gc,  argument
368 	int			(*get_direction)(struct gpio_chip *gc,  argument
370 	int			(*direction_input)(struct gpio_chip *gc,  argument
372 	int			(*direction_output)(struct gpio_chip *gc,  argument
374 	int			(*get)(struct gpio_chip *gc,  argument
376 	int			(*get_multiple)(struct gpio_chip *gc,  argument
379 	void			(*set)(struct gpio_chip *gc,  argument
381 	void			(*set_multiple)(struct gpio_chip *gc,  argument
384 	int			(*set_config)(struct gpio_chip *gc,  argument
387 	int			(*to_irq)(struct gpio_chip *gc,  argument
391 						struct gpio_chip *gc);  argument
393 	int			(*init_valid_mask)(struct gpio_chip *gc,  argument
397 	int			(*add_pin_ranges)(struct gpio_chip *gc);  argument
399 	int			base;
400 	u16			ngpio;
401 	const char		*const *names;
402 	bool			can_sleep;
405 	unsigned long (*read_reg)(void __iomem *reg);
406 	void (*write_reg)(void __iomem *reg, unsigned long data);
407 	bool be_bits;
408 	void __iomem *reg_dat;
409 	void __iomem *reg_set;
410 	void __iomem *reg_clr;
411 	void __iomem *reg_dir_out;
412 	void __iomem *reg_dir_in;
413 	bool bgpio_dir_unreadable;
414 	int bgpio_bits;
415 	spinlock_t bgpio_lock;
416 	unsigned long bgpio_data;
417 	unsigned long bgpio_dir;
432 	struct gpio_irq_chip irq;
441 	unsigned long *valid_mask;
469 	int (*of_xlate)(struct gpio_chip *gc,  argument