/*      $NetBSD: gpioreg.h,v 1.4 2006/03/13 15:31:11 shige Exp $        */

/*
 * Copyright 2001 Wasabi Systems, Inc.
 * All rights reserved.
 *
 * Written by Simon Burge and Eduardo Horvath for Wasabi Systems, Inc.
 *
 * 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.
 * 3. All advertising materials mentioning features or use of this software
 *    must display the following acknowledgement:
 *      This product includes software developed for the NetBSD Project by
 *      Wasabi Systems, Inc.
 * 4. The name of Wasabi Systems, Inc. may not be used to endorse
 *    or promote products derived from this software without specific prior
 *    written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``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 WASABI SYSTEMS, INC
 * 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 _IBM4XX_GPIOREG_H_
#define _IBM4XX_GPIOREG_H_

/*
 * GPIO Registers
 */

/*
 * GPIO ODR Control Logic:
 *      ODR     OR      Out     TCR     TS_Ctrl Module I/O 3-State Driver
 *      0       X       X       0       0       Forced to high impedance state
 *      0       0       0       1       1       Drive 0
 *      0       1       1       1       1       Drive 1
 *      1       0       0       X       1       Drive 0
 *      1       1       0       X       0       Forced to high impedance state
 */

/* GPIO pins */
#define GPIO_NPINS              (24)

/* GPIO Registers 0x00-0x7f */
#define GPIO_NREG               (0x80)

#define GPIO_PIN_SHIFT(n)       (31 - n)

/* Offset */
#define GPIO_OR                 (0x00)  /* Output */
#define GPIO_TCR                (0x04)  /* Three-State Control */
#define GPIO_ODR                (0x18)  /* Open Drain */
#define GPIO_IR                 (0x1c)  /* Input */

#endif  /* _IBM4XX_GPIOREG_H_ */