patch-2.4.4 linux/include/asm-sh/hd64465_gpio.h

• Lines: 48
• Date: Wed Apr 11 21:24:52 2001
• Orig file: v2.4.3/linux/include/asm-sh/hd64465_gpio.h
• Orig date: Wed Dec 31 16:00:00 1969

diff -u --recursive --new-file v2.4.3/linux/include/asm-sh/hd64465_gpio.h linux/include/asm-sh/hd64465_gpio.h
@@ -0,0 +1,47 @@
+#ifndef _ASM_SH_HD64465_GPIO_
+#define _ASM_SH_HD64465_GPIO_ 1
+/*
+ * $Id: hd64465_gpio.h,v 1.1 2001/01/02 15:35:22 mjd 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 <linux/config.h>
+#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_  */