1 /* 2 * Copyright (c) 2011, NVIDIA Corp. All rights reserved. 3 * See file CREDITS for list of people who contributed to this 4 * project. 5 * 6 * This program is free software; you can redistribute it and/or 7 * modify it under the terms of the GNU General Public License as 8 * published by the Free Software Foundation; either version 2 of 9 * the License, or (at your option) any later version. 10 * 11 * This program is distributed in the hope that it will be useful, 12 * but WITHOUT ANY WARRANTY; without even the implied warranty of 13 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 14 * GNU General Public License for more details. 15 * 16 * You should have received a copy of the GNU General Public License 17 * along with this program; if not, write to the Free Software 18 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, 19 * MA 02111-1307 USA 20 */ 21 22 #ifndef _GPIO_H_ 23 #define _GPIO_H_ 24 25 #include <asm/arch/gpio.h> 26 /* 27 * Generic GPIO API 28 */ 29 30 int gpio_request(int gp, const char *label); 31 void gpio_free(int gp); 32 void gpio_toggle_value(int gp); 33 int gpio_direction_input(int gp); 34 int gpio_direction_output(int gp, int value); 35 int gpio_get_value(int gp); 36 void gpio_set_value(int gp, int value); 37 38 #endif /* _GPIO_H_ */ 39