xref: /freebsd/sys/powerpc/powermac/macgpiovar.h (revision 8d20be1e22095c27faf8fe8b2f0d089739cc742e)
1 /*-
2  * Copyright 2008 by Nathan Whitehorn. All rights reserved.
3  *
4  * Redistribution and use in source and binary forms, with or without
5  * modification, are permitted provided that the following conditions
6  * are met:
7  * 1. Redistributions of source code must retain the above copyright
8  *    notice, this list of conditions and the following disclaimer.
9  * 2. Redistributions in binary form must reproduce the above copyright
10  *    notice, this list of conditions and the following disclaimer in the
11  *    documentation and/or other materials provided with the distribution.
12  *
13  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
14  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
15  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
16  * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
17  * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING,
18  * BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
19  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED
20  * AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
21  * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
22  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
23  * SUCH DAMAGE.
24  *
25  * $FreeBSD$
26  */
27 
28 #ifndef _MACIO_MACGPIOVAR_H_
29 #define _MACIO_MACGPIOVAR_H_
30 
31 /* relative offsets into gpio space */
32 #define GPIO_EXTINT_BASE	0x08
33 #define GPIO_BASE		0x1a
34 
35 /* gpio bit definitions */
36 #define GPIO_DATA		0x01 /* GPIO data */
37 #define GPIO_LEVEL_RO		0x02 /* read-only level on pin */
38 #define GPIO_DDR_INPUT		0x00 /* use for input */
39 #define GPIO_DDR_OUTPUT		0x04 /* use for output */
40 
41 uint8_t	macgpio_read(device_t dev);
42 void	macgpio_write(device_t dev,uint8_t);
43 
44 #endif /* _MACIO_MACGPIOVAR_H_ */
45