1 /* $NetBSD: gpio.h,v 1.7 2009/09/25 20:27:50 mbalmer Exp $ */
2 /* $OpenBSD: gpio.h,v 1.7 2008/11/26 14:51:20 mbalmer Exp $ */
4 * Copyright (c) 2009, Oleksandr Tymoshenko <gonzo@FreeBSD.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice unmodified, this list of conditions, and the following
13 * 2. Redistributions in binary form must reproduce the above copyright
14 * notice, this list of conditions and the following disclaimer in the
15 * documentation and/or other materials provided with the distribution.
17 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
18 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
19 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
20 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
21 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
22 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
23 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
24 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
25 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
26 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
34 * Copyright (c) 2009 Marc Balmer <marc@msys.ch>
35 * Copyright (c) 2004 Alexander Yurchenko <grange@openbsd.org>
37 * Permission to use, copy, modify, and distribute this software for any
38 * purpose with or without fee is hereby granted, provided that the above
39 * copyright notice and this permission notice appear in all copies.
41 * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
42 * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
43 * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
44 * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
45 * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
46 * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
47 * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
53 #include <sys/ioccom.h>
56 #define GPIO_PIN_LOW 0x00 /* low level (logical 0) */
57 #define GPIO_PIN_HIGH 0x01 /* high level (logical 1) */
59 /* Max name length of a pin */
60 #define GPIOMAXNAME 64
62 /* GPIO pin configuration flags */
63 #define GPIO_PIN_INPUT 0x0001 /* input direction */
64 #define GPIO_PIN_OUTPUT 0x0002 /* output direction */
65 #define GPIO_PIN_OPENDRAIN 0x0004 /* open-drain output */
66 #define GPIO_PIN_PUSHPULL 0x0008 /* push-pull output */
67 #define GPIO_PIN_TRISTATE 0x0010 /* output disabled */
68 #define GPIO_PIN_PULLUP 0x0020 /* internal pull-up enabled */
69 #define GPIO_PIN_PULLDOWN 0x0040 /* internal pull-down enabled */
70 #define GPIO_PIN_INVIN 0x0080 /* invert input */
71 #define GPIO_PIN_INVOUT 0x0100 /* invert output */
72 #define GPIO_PIN_PULSATE 0x0200 /* pulsate in hardware */
75 uint32_t gp_pin; /* pin number */
76 char gp_name[GPIOMAXNAME]; /* human-readable name */
77 uint32_t gp_caps; /* capabilities */
78 uint32_t gp_flags; /* current flags */
81 /* GPIO pin request (read/write/toggle) */
83 uint32_t gp_pin; /* pin number */
84 uint32_t gp_value; /* value */
90 #define GPIOMAXPIN _IOR('G', 0, int)
91 #define GPIOGETCONFIG _IOWR('G', 1, struct gpio_pin)
92 #define GPIOSETCONFIG _IOW('G', 2, struct gpio_pin)
93 #define GPIOGET _IOWR('G', 3, struct gpio_req)
94 #define GPIOSET _IOW('G', 4, struct gpio_req)
95 #define GPIOTOGGLE _IOWR('G', 5, struct gpio_req)
97 #endif /* __GPIO_H__ */