at91_gpio.h

AT91RM9200的嵌入式LINUX下GPIO驱动

/*
 *  AT91RM9200 GPIO driver for use for high speed packet sending/receiving
 *
 *		This program is free software; you can redistribute it and/or
 *		modify it under the terms of the GNU General Public License
 *		as published by the Free Software Foundation; either version
 *		2 of the License, or (at your option) any later version.
 */

#ifndef AT91_GPIO
#define AT91_GPIO

#define GPIO_NUM_PORTS 4  /* gpioa gpiob gpioc gpiod */

/* private data per open() of this driver */

struct gpio_private {
  struct gpio_private *next;
	/* These fields are for PA and PB only */
  spinlock_t lock1;  /* some spinlocks for saving/restoring interrupt levels */
  wait_queue_head_t gpio_wait;
  int minor;
};

#endif