diff options
Diffstat (limited to 'freebsd/sys/sys/gpio.h')
| -rw-r--r-- | freebsd/sys/sys/gpio.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/freebsd/sys/sys/gpio.h b/freebsd/sys/sys/gpio.h new file mode 100644 index 00000000..9b0a1b55 --- /dev/null +++ b/freebsd/sys/sys/gpio.h @@ -0,0 +1,108 @@ +/* $NetBSD: gpio.h,v 1.7 2009/09/25 20:27:50 mbalmer Exp $ */ +/* $OpenBSD: gpio.h,v 1.7 2008/11/26 14:51:20 mbalmer Exp $ */ +/*- + * Copyright (c) 2009, Oleksandr Tymoshenko <gonzo@FreeBSD.org> + * All rights reserved. + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * 1. Redistributions of source code must retain the above copyright + * notice unmodified, this list of conditions, and the following + * disclaimer. + * 2. Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in the + * documentation and/or other materials provided with the distribution. + * + * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND + * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE + * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE + * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE + * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL + * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS + * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) + * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT + * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY + * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF + * SUCH DAMAGE. + * + * $FreeBSD$ + * + */ + +/* + * Copyright (c) 2009 Marc Balmer <marc@msys.ch> + * Copyright (c) 2004 Alexander Yurchenko <grange@openbsd.org> + * + * Permission to use, copy, modify, and distribute this software for any + * purpose with or without fee is hereby granted, provided that the above + * copyright notice and this permission notice appear in all copies. + * + * THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES + * WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF + * MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR + * ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES + * WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN + * ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF + * OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE. + */ + +#ifndef __GPIO_H__ +#define __GPIO_H__ + +#include <sys/ioccom.h> + +/* GPIO pin states */ +#define GPIO_PIN_LOW 0x00 /* low level (logical 0) */ +#define GPIO_PIN_HIGH 0x01 /* high level (logical 1) */ + +/* Max name length of a pin */ +#define GPIOMAXNAME 64 + +/* GPIO pin configuration flags */ +#define GPIO_PIN_INPUT 0x00000001 /* input direction */ +#define GPIO_PIN_OUTPUT 0x00000002 /* output direction */ +#define GPIO_PIN_OPENDRAIN 0x00000004 /* open-drain output */ +#define GPIO_PIN_PUSHPULL 0x00000008 /* push-pull output */ +#define GPIO_PIN_TRISTATE 0x00000010 /* output disabled */ +#define GPIO_PIN_PULLUP 0x00000020 /* internal pull-up enabled */ +#define GPIO_PIN_PULLDOWN 0x00000040 /* internal pull-down enabled */ +#define GPIO_PIN_INVIN 0x00000080 /* invert input */ +#define GPIO_PIN_INVOUT 0x00000100 /* invert output */ +#define GPIO_PIN_PULSATE 0x00000200 /* pulsate in hardware */ +/* GPIO interrupt capabilities */ +#define GPIO_INTR_NONE 0x00000000 /* no interrupt support */ +#define GPIO_INTR_LEVEL_LOW 0x00010000 /* level trigger, low */ +#define GPIO_INTR_LEVEL_HIGH 0x00020000 /* level trigger, high */ +#define GPIO_INTR_EDGE_RISING 0x00040000 /* edge trigger, rising */ +#define GPIO_INTR_EDGE_FALLING 0x00080000 /* edge trigger, falling */ +#define GPIO_INTR_EDGE_BOTH 0x00100000 /* edge trigger, both */ +#define GPIO_INTR_MASK (GPIO_INTR_LEVEL_LOW | GPIO_INTR_LEVEL_HIGH | \ + GPIO_INTR_EDGE_RISING | \ + GPIO_INTR_EDGE_FALLING | GPIO_INTR_EDGE_BOTH) + +struct gpio_pin { + uint32_t gp_pin; /* pin number */ + char gp_name[GPIOMAXNAME]; /* human-readable name */ + uint32_t gp_caps; /* capabilities */ + uint32_t gp_flags; /* current flags */ +}; + +/* GPIO pin request (read/write/toggle) */ +struct gpio_req { + uint32_t gp_pin; /* pin number */ + uint32_t gp_value; /* value */ +}; + +/* + * ioctls + */ +#define GPIOMAXPIN _IOR('G', 0, int) +#define GPIOGETCONFIG _IOWR('G', 1, struct gpio_pin) +#define GPIOSETCONFIG _IOW('G', 2, struct gpio_pin) +#define GPIOGET _IOWR('G', 3, struct gpio_req) +#define GPIOSET _IOW('G', 4, struct gpio_req) +#define GPIOTOGGLE _IOWR('G', 5, struct gpio_req) +#define GPIOSETNAME _IOW('G', 6, struct gpio_pin) + +#endif /* __GPIO_H__ */ |