| #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_ */ |
