1/* 2 * Generic GPIO Interface 3 * 4 * Copyright (C) 2010, Broadcom Corporation. All Rights Reserved. 5 * 6 * Permission to use, copy, modify, and/or distribute this software for any 7 * purpose with or without fee is hereby granted, provided that the above 8 * copyright notice and this permission notice appear in all copies. 9 * 10 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES 11 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF 12 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY 13 * SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES 14 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN ACTION 15 * OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF OR IN 16 * CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. 17 * 18 * $Id: gpio.h,v 1.1 2009/11/02 19:10:00 Exp $ 19 */ 20 21int gpio_direction_input(unsigned pin); 22int gpio_direction_output(unsigned pin, int value); 23 24int gpio_get_value(unsigned int gpio); 25void gpio_set_value(unsigned int gpio, int value); 26 27int gpio_request(unsigned int gpio, const char *label); 28void gpio_free(unsigned int gpio); 29