1/*	$NetBSD: gpioreg.h,v 1.3 2005/12/11 12:18:42 christos 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