415 struct gpio_chip {  struct
422 	int			(*request)(struct gpio_chip *gc,  argument
424 	void			(*free)(struct gpio_chip *gc,  argument
426 	int			(*get_direction)(struct gpio_chip *gc,  argument
428 	int			(*direction_input)(struct gpio_chip *gc,  argument
430 	int			(*direction_output)(struct gpio_chip *gc,  argument
432 	int			(*get)(struct gpio_chip *gc,  argument
434 	int			(*get_multiple)(struct gpio_chip *gc,  argument
437 	void			(*set)(struct gpio_chip *gc,  argument
439 	void			(*set_multiple)(struct gpio_chip *gc,  argument
442 	int			(*set_config)(struct gpio_chip *gc,  argument
445 	int			(*to_irq)(struct gpio_chip *gc,  argument
449 						struct gpio_chip *gc);  argument
451 	int			(*init_valid_mask)(struct gpio_chip *gc,  argument
455 	int			(*add_pin_ranges)(struct gpio_chip *gc);  argument
457 	int			(*en_hw_timestamp)(struct gpio_chip *gc,  argument
460 	int			(*dis_hw_timestamp)(struct gpio_chip *gc,  argument
463 	int			base;
464 	u16			ngpio;
465 	u16			offset;
466 	const char		*const *names;
467 	bool			can_sleep;
470 	unsigned long (*read_reg)(void __iomem *reg);
471 	void (*write_reg)(void __iomem *reg, unsigned long data);
472 	bool be_bits;
473 	void __iomem *reg_dat;
474 	void __iomem *reg_set;
475 	void __iomem *reg_clr;
476 	void __iomem *reg_dir_out;
477 	void __iomem *reg_dir_in;
478 	bool bgpio_dir_unreadable;
479 	int bgpio_bits;
480 	raw_spinlock_t bgpio_lock;
481 	unsigned long bgpio_data;
482 	unsigned long bgpio_dir;
497 	struct gpio_irq_chip irq;
527 	int (*of_xlate)(struct gpio_chip *gc,  argument