| 12345678910111213141516171819202122232425262728293031323334353637383940414243444546 |
- #ifndef _ASM_SH_HD64465_GPIO_
- #define _ASM_SH_HD64465_GPIO_ 1
- /*
- * $Id: gpio.h,v 1.3 2003/05/04 19:30:14 lethal Exp $
- *
- * Hitachi HD64465 companion chip: General Purpose IO pins support.
- * This layer enables other device drivers to configure GPIO
- * pins, get and set their values, and register an interrupt
- * routine for when input pins change in hardware.
- *
- * by Greg Banks <gbanks@pocketpenguins.com>
- * (c) 2000 PocketPenguins Inc.
- */
- #include <asm/hd64465.h>
- /* Macro to construct a portpin number (used in all
- * subsequent functions) from a port letter and a pin
- * number, e.g. HD64465_GPIO_PORTPIN('A', 5).
- */
- #define HD64465_GPIO_PORTPIN(port,pin) (((port)-'A')<<3|(pin))
- /* Pin configuration constants for _configure() */
- #define HD64465_GPIO_FUNCTION2 0 /* use the pin's *other* function */
- #define HD64465_GPIO_OUT 1 /* output */
- #define HD64465_GPIO_IN_PULLUP 2 /* input, pull-up MOS on */
- #define HD64465_GPIO_IN 3 /* input */
- /* Configure a pin's direction */
- extern void hd64465_gpio_configure(int portpin, int direction);
- /* Get, set value */
- extern void hd64465_gpio_set_pin(int portpin, unsigned int value);
- extern unsigned int hd64465_gpio_get_pin(int portpin);
- extern void hd64465_gpio_set_port(int port, unsigned int value);
- extern unsigned int hd64465_gpio_get_port(int port);
- /* mode constants for _register_irq() */
- #define HD64465_GPIO_FALLING 0
- #define HD64465_GPIO_RISING 1
- /* Interrupt on external value change */
- extern void hd64465_gpio_register_irq(int portpin, int mode,
- void (*handler)(int portpin, void *dev), void *dev);
- extern void hd64465_gpio_unregister_irq(int portpin);
- #endif /* _ASM_SH_HD64465_GPIO_ */
|
