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  • /*
     * Copyright (c) 2011, NVIDIA Corp. All rights reserved.
     * See file CREDITS for list of people who contributed to this
     * project.
     *
     * This program is free software; you can redistribute it and/or
     * modify it under the terms of the GNU General Public License as
     * published by the Free Software Foundation; either version 2 of
     * the License, or (at your option) any later version.
     *
     * This program is distributed in the hope that it will be useful,
     * but WITHOUT ANY WARRANTY; without even the implied warranty of
     * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
     * GNU General Public License for more details.
     *
     * You should have received a copy of the GNU General Public License
     * along with this program; if not, write to the Free Software
     * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
     * MA 02111-1307 USA
     */
    
    #ifndef _GPIO_H_
    #define _GPIO_H_
    
    #include <asm/arch/gpio.h>
    /*
     * Generic GPIO API
     */
    
    int gpio_request(int gp, const char *label);
    void gpio_free(int gp);
    void gpio_toggle_value(int gp);
    int gpio_direction_input(int gp);
    int gpio_direction_output(int gp, int value);
    int gpio_get_value(int gp);
    void gpio_set_value(int gp, int value);
    
    #endif	/* _GPIO_H_ */