FreeBSD/Linux Kernel Cross Reference
sys/powerpc/powermac/macgpiovar.h

     /*-
      * Copyright 2008 by Nathan Whitehorn. 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, 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 ``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 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.
     *
     * $FreeBSD$
     */
    
    #ifndef _MACIO_MACGPIOVAR_H_
    #define _MACIO_MACGPIOVAR_H_
    
    /* relative offsets into gpio space */
    #define GPIO_EXTINT_BASE        0x08
    #define GPIO_BASE               0x1a
    
    /* gpio bit definitions */
    #define GPIO_DATA               0x01 /* GPIO data */
    #define GPIO_LEVEL_RO           0x02 /* read-only level on pin */
    #define GPIO_DDR_INPUT          0x00 /* use for input */
    #define GPIO_DDR_OUTPUT         0x04 /* use for output */
    
    uint8_t macgpio_read(device_t dev);
    void    macgpio_write(device_t dev,uint8_t);
    
    #endif /* _MACIO_MACGPIOVAR_H_ */

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