| /* |
| * Copyright (c) 2008, Google Inc. |
| * All rights reserved. |
| * |
| * Redistribution and use in source and binary forms, with or without |
| * modification, are permitted provided that the following conditions |
| * are met: |
| * * Redistributions of source code must retain the above copyright |
| * notice, this list of conditions and the following disclaimer. |
| * * 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 COPYRIGHT HOLDERS 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 |
| * COPYRIGHT OWNER 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. |
| */ |
| |
| #ifndef __DEV_GPIO_H |
| #define __DEV_GPIO_H |
| |
| #define GPIO_INPUT 0x0000 |
| #define GPIO_OUTPUT 0x0001 |
| |
| #define GPIO_LEVEL 0x0000 |
| #define GPIO_EDGE 0x0010 |
| |
| #define GPIO_RISING 0x0020 |
| #define GPIO_FALLING 0x0040 |
| |
| #define GPIO_HIGH 0x0020 |
| #define GPIO_LOW 0x0040 |
| |
| #define GPIO_PULLUP 0x0100 |
| #define GPIO_PULLDOWN 0x0200 |
| |
| int gpio_config(unsigned nr, unsigned flags); |
| void gpio_set(unsigned nr, unsigned on); |
| int gpio_get(unsigned nr); |
| |
| #endif |