Index: sys/gpio.h
===================================================================
--- sys/gpio.h	(revision 230974)
+++ sys/gpio.h	(working copy)
@@ -94,4 +94,26 @@
 #define	GPIOSET			_IOW('G', 4, struct gpio_req)
 #define	GPIOTOGGLE		_IOWR('G', 5, struct gpio_req)
 
+#ifdef _KERNEL
+
+/*
+ * Returns 0 if no GPIO device is available, otherwise - 1
+ */
+int gpio_available(void);
+
+/*
+ * GPIO kobj methods exported as an API functions. Return 0 
+ *    on success, error code otherwise.
+ */
+int gpio_pin_max(int unit, int *npins);
+int gpio_pin_set(int unit, uint32_t pin_num, uint32_t pin_value);
+int gpio_pin_get(int unit, uint32_t pin_num, uint32_t *pin_value);
+int gpio_pin_toggle(int unit, uint32_t pin_num);
+int gpio_pin_getcaps(int unit, uint32_t pin_num, uint32_t *caps);
+int gpio_pin_getflags(int unit, uint32_t pin_num, uint32_t *flags);
+int gpio_pin_getname(int unit, uint32_t pin_num, char *name);
+int gpio_pin_setflags(int unit, uint32_t pin_num, uint32_t flags);
+
+#endif /* _KERNEL */
+
 #endif /* __GPIO_H__ */
Index: conf/files
===================================================================
--- conf/files	(revision 230974)
+++ conf/files	(working copy)
@@ -1113,6 +1113,8 @@
 	dependency	"gpiobus_if.h"
 dev/gpio/gpioc.c		optional gpio				\
 	dependency	"gpio_if.h"
+dev/gpio/gpio.c			optional gpio				\
+	dependency	"gpio_if.h"
 dev/gpio/gpioiic.c		optional gpioiic
 dev/gpio/gpioled.c		optional gpioled
 dev/gpio/gpio_if.m		optional gpio
Index: dev/gpio/gpio.c
===================================================================
--- dev/gpio/gpio.c	(revision 0)
+++ dev/gpio/gpio.c	(working copy)
@@ -0,0 +1,133 @@
+/*-
+ * Copyright (c) 2012, Oleksandr Tymoshenko <gonzo@FreeBSD.org>
+ * All rights reserved.
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice unmodified, this list of conditions, and the following
+ *    disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
+ * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * $FreeBSD$
+ *
+ */
+
+#include <sys/param.h>
+#include <sys/queue.h>
+#include <sys/kernel.h>
+#include <sys/kobj.h>
+#include <sys/bus.h>
+#include <sys/gpio.h>
+
+#include "gpio_if.h"
+
+int
+gpio_available(void)
+{
+
+	return (devclass_get_device(devclass_find("gpio"), 0) != NULL);
+}
+
+int
+gpio_pin_max(int unit, int *npins)
+{
+	device_t gpiodev = devclass_get_device(devclass_find("gpio"), unit);
+
+	if (gpiodev == NULL)
+		return (ENXIO);
+
+	return GPIO_PIN_MAX(gpiodev, npins);
+}
+
+int
+gpio_pin_set(int unit, uint32_t pin_num, uint32_t pin_value)
+{
+	device_t gpiodev = devclass_get_device(devclass_find("gpio"), unit);
+
+	if (gpiodev == NULL)
+		return (ENXIO);
+
+	return GPIO_PIN_SET(gpiodev, pin_num, pin_value);
+}
+
+int
+gpio_pin_get(int unit, uint32_t pin_num, uint32_t *pin_value)
+{
+	device_t gpiodev = devclass_get_device(devclass_find("gpio"), unit);
+
+	if (gpiodev == NULL)
+		return (ENXIO);
+
+	return GPIO_PIN_GET(gpiodev, pin_num, pin_value);
+}
+
+int
+gpio_pin_toggle(int unit, uint32_t pin_num)
+{
+	device_t gpiodev = devclass_get_device(devclass_find("gpio"), unit);
+
+	if (gpiodev == NULL)
+		return (ENXIO);
+
+	return GPIO_PIN_TOGGLE(gpiodev, pin_num);
+}
+
+int
+gpio_pin_getcaps(int unit, uint32_t pin_num, uint32_t *caps)
+{
+	device_t gpiodev = devclass_get_device(devclass_find("gpio"), unit);
+
+	if (gpiodev == NULL)
+		return (ENXIO);
+
+	return GPIO_PIN_GETCAPS(gpiodev, pin_num, caps);
+}
+
+int
+gpio_pin_getflags(int unit, uint32_t pin_num, uint32_t *flags)
+{
+	device_t gpiodev = devclass_get_device(devclass_find("gpio"), unit);
+
+	if (gpiodev == NULL)
+		return (ENXIO);
+
+	return GPIO_PIN_GETFLAGS(gpiodev, pin_num, flags);
+}
+
+int
+gpio_pin_getname(int unit, uint32_t pin_num, char *name)
+{
+	device_t gpiodev = devclass_get_device(devclass_find("gpio"), unit);
+
+	if (gpiodev == NULL)
+		return (ENXIO);
+
+	return GPIO_PIN_GETNAME(gpiodev, pin_num, name);
+}
+
+int
+gpio_pin_setflags(int unit, uint32_t pin_num, uint32_t flags)
+{
+	device_t gpiodev = devclass_get_device(devclass_find("gpio"), unit);
+
+	if (gpiodev == NULL)
+		return (ENXIO);
+
+	return GPIO_PIN_SETFLAGS(gpiodev, pin_num, flags);
+}