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      1 /*	$NetBSD: gpioreg.h,v 1.4 2006/03/13 15:31:11 shige Exp $	*/
      2 
      3 /*
      4  * Copyright 2001 Wasabi Systems, Inc.
      5  * All rights reserved.
      6  *
      7  * Written by Simon Burge and Eduardo Horvath for Wasabi Systems, Inc.
      8  *
      9  * Redistribution and use in source and binary forms, with or without
     10  * modification, are permitted provided that the following conditions
     11  * are met:
     12  * 1. Redistributions of source code must retain the above copyright
     13  *    notice, this list of conditions and the following disclaimer.
     14  * 2. Redistributions in binary form must reproduce the above copyright
     15  *    notice, this list of conditions and the following disclaimer in the
     16  *    documentation and/or other materials provided with the distribution.
     17  * 3. All advertising materials mentioning features or use of this software
     18  *    must display the following acknowledgement:
     19  *      This product includes software developed for the NetBSD Project by
     20  *      Wasabi Systems, Inc.
     21  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
     22  *    or promote products derived from this software without specific prior
     23  *    written permission.
     24  *
     25  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
     26  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     27  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     28  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
     29  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     30  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     31  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     32  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     33  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     34  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     35  * POSSIBILITY OF SUCH DAMAGE.
     36  */
     37 
     38 #ifndef _IBM4XX_GPIOREG_H_
     39 #define	_IBM4XX_GPIOREG_H_
     40 
     41 /*
     42  * GPIO Registers
     43  */
     44 
     45 /*
     46  * GPIO ODR Control Logic:
     47  * 	ODR	OR	Out	TCR	TS_Ctrl	Module I/O 3-State Driver
     48  *	0	X	X	0	0	Forced to high impedance state
     49  *	0	0	0	1	1	Drive 0
     50  *	0	1	1	1	1	Drive 1
     51  *	1	0	0	X	1	Drive 0
     52  *	1	1	0	X	0	Forced to high impedance state
     53  */
     54 
     55 /* GPIO pins */
     56 #define GPIO_NPINS		(24)
     57 
     58 /* GPIO Registers 0x00-0x7f */
     59 #define GPIO_NREG		(0x80)
     60 
     61 #define GPIO_PIN_SHIFT(n)	(31 - n)
     62 
     63 /* Offset */
     64 #define	GPIO_OR			(0x00)	/* Output */
     65 #define	GPIO_TCR		(0x04)	/* Three-State Control */
     66 #define	GPIO_ODR		(0x18)	/* Open Drain */
     67 #define	GPIO_IR			(0x1c)	/* Input */
     68 
     69 #endif	/* _IBM4XX_GPIOREG_H_ */
     70