1 files changed, 80 insertions, 0 deletions
diff --git a/sys/sys/gpio.h b/sys/sys/gpio.h
new file mode 100644
index 0000000..95ce9cd
--- /dev/null
+++ b/sys/sys/gpio.h
@@ -0,0 +1,80 @@
+/*	$OpenBSD: gpio.h,v 1.8 2011/10/03 20:24:51 matthieu Exp $	*/
+/*
+ * Copyright (c) 2004 Alexander Yurchenko <grange@openbsd.org>
+ *
+ * Permission to use, copy, modify, and distribute this software for any
+ * purpose with or without fee is hereby granted, provided that the above
+ * copyright notice and this permission notice appear in all copies.
+ *
+ * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
+ * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
+ * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
+ * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
+ * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
+ * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
+ * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
+ */
+
+#ifndef _SYS_GPIO_H_
+#define _SYS_GPIO_H_
+
+/* GPIO pin states */
+#define GPIO_PIN_LOW		0x00	/* low level (logical 0) */
+#define GPIO_PIN_HIGH		0x01	/* high level (logical 1) */
+
+/* Max name length of a pin */
+#define GPIOPINMAXNAME		64
+
+/* GPIO pin configuration flags */
+#define GPIO_PIN_INPUT		0x0001	/* input direction */
+#define GPIO_PIN_OUTPUT		0x0002	/* output direction */
+#define GPIO_PIN_INOUT		0x0004	/* bi-directional */
+#define GPIO_PIN_OPENDRAIN	0x0008	/* open-drain output */
+#define GPIO_PIN_PUSHPULL	0x0010	/* push-pull output */
+#define GPIO_PIN_TRISTATE	0x0020	/* output disabled */
+#define GPIO_PIN_PULLUP		0x0040	/* internal pull-up enabled */
+#define GPIO_PIN_PULLDOWN	0x0080	/* internal pull-down enabled */
+#define GPIO_PIN_INVIN		0x0100	/* invert input */
+#define GPIO_PIN_INVOUT		0x0200	/* invert output */
+#define GPIO_PIN_USER		0x0400	/* user != 0 can access */
+#define GPIO_PIN_SET		0x8000	/* set for securelevel access */
+
+/* GPIO controller description */
+struct gpio_info {
+	int gpio_npins;		/* total number of pins available */
+};
+
+/* GPIO pin operation (read/write/toggle) */
+struct gpio_pin_op {
+	char gp_name[GPIOPINMAXNAME];	/* pin name */
+	int gp_pin;			/* pin number */
+	int gp_value;			/* value */
+};
+
+/* GPIO pin configuration */
+struct gpio_pin_set {
+	char gp_name[GPIOPINMAXNAME];
+	int gp_pin;
+	int gp_caps;
+	int gp_flags;
+	char gp_name2[GPIOPINMAXNAME];	/* new name */
+};
+
+/* Attach/detach device drivers that use GPIO pins */
+struct gpio_attach {
+	char ga_dvname[16];	/* device name */
+	int ga_offset;		/* pin number */
+	u_int32_t ga_mask;	/* binary mask */
+	u_int32_t ga_flags;	/* flags */
+};
+
+#define GPIOINFO		_IOR('G', 0, struct gpio_info)
+#define GPIOPINREAD		_IOWR('G', 1, struct gpio_pin_op)
+#define GPIOPINWRITE		_IOWR('G', 2, struct gpio_pin_op)
+#define GPIOPINTOGGLE		_IOWR('G', 3, struct gpio_pin_op)
+#define GPIOPINSET		_IOWR('G', 4, struct gpio_pin_set)
+#define GPIOPINUNSET		_IOWR('G', 5, struct gpio_pin_set)
+#define GPIOATTACH		_IOWR('G', 6, struct gpio_attach)
+#define GPIODETACH		_IOWR('G', 7, struct gpio_attach)
+
+#endif	/* !_SYS_GPIO_H_ */