ibm4xx/dev/gpioreg.h

1.4   shige /*	$NetBSD: gpioreg.h,v 1.4 2006/03/13 15:31:11 shige Exp $	*/
1.1  simonb
1.1  simonb /*
1.1  simonb  * Copyright 2001 Wasabi Systems, Inc.
1.1  simonb  * All rights reserved.
1.1  simonb  *
1.1  simonb  * Written by Simon Burge and Eduardo Horvath for Wasabi Systems, Inc.
1.1  simonb  *
1.1  simonb  * Redistribution and use in source and binary forms, with or without
1.1  simonb  * modification, are permitted provided that the following conditions
1.1  simonb  * are met:
1.1  simonb  * 1. Redistributions of source code must retain the above copyright
1.1  simonb  *    notice, this list of conditions and the following disclaimer.
1.1  simonb  * 2. Redistributions in binary form must reproduce the above copyright
1.1  simonb  *    notice, this list of conditions and the following disclaimer in the
1.1  simonb  *    documentation and/or other materials provided with the distribution.
1.1  simonb  * 3. All advertising materials mentioning features or use of this software
1.1  simonb  *    must display the following acknowledgement:
1.1  simonb  *      This product includes software developed for the NetBSD Project by
1.1  simonb  *      Wasabi Systems, Inc.
1.1  simonb  * 4. The name of Wasabi Systems, Inc. may not be used to endorse
1.1  simonb  *    or promote products derived from this software without specific prior
1.1  simonb  *    written permission.
1.1  simonb  *
1.1  simonb  * THIS SOFTWARE IS PROVIDED BY WASABI SYSTEMS, INC. ``AS IS'' AND
1.1  simonb  * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
1.1  simonb  * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
1.1  simonb  * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL WASABI SYSTEMS, INC
1.1  simonb  * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
1.1  simonb  * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
1.1  simonb  * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
1.1  simonb  * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
1.1  simonb  * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
1.1  simonb  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
1.1  simonb  * POSSIBILITY OF SUCH DAMAGE.
1.1  simonb  */
1.1  simonb
1.1  simonb #ifndef _IBM4XX_GPIOREG_H_
1.1  simonb #define	_IBM4XX_GPIOREG_H_
1.1  simonb
1.2   shige /*
1.2   shige  * GPIO Registers
1.2   shige  */
1.2   shige
1.2   shige /*
1.2   shige  * GPIO ODR Control Logic:
1.2   shige  * 	ODR	OR	Out	TCR	TS_Ctrl	Module I/O 3-State Driver
1.2   shige  *	0	X	X	0	0	Forced to high impedance state
1.2   shige  *	0	0	0	1	1	Drive 0
1.2   shige  *	0	1	1	1	1	Drive 1
1.2   shige  *	1	0	0	X	1	Drive 0
1.2   shige  *	1	1	0	X	0	Forced to high impedance state
1.2   shige  */
1.2   shige
1.4   shige /* GPIO pins */
1.4   shige #define GPIO_NPINS		(24)
1.4   shige
1.2   shige /* GPIO Registers 0x00-0x7f */
1.2   shige #define GPIO_NREG		(0x80)
1.2   shige
1.4   shige #define GPIO_PIN_SHIFT(n)	(31 - n)
1.2   shige
1.2   shige /* Offset */
1.2   shige #define	GPIO_OR			(0x00)	/* Output */
1.2   shige #define	GPIO_TCR		(0x04)	/* Three-State Control */
1.2   shige #define	GPIO_ODR		(0x18)	/* Open Drain */
1.2   shige #define	GPIO_IR			(0x1c)	/* Input */
1.2   shige
1.1  simonb #endif	/* _IBM4XX_GPIOREG_H_ */