/* $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 * 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 * Copyright (c) 2004 Alexander Yurchenko * * 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 /* GPIO pin states */ #define GPIO_PIN_LOW 0x00 /* low level (logical 0) */ #define GPIO_PIN_HIGH 0x01 /* high level (logical 1) */ /* GPIO PWM settings */ #define GPIO_PWM_DUTY 0x01 /* PWM duty cycle */ #define GPIO_PWM_FREQ 0x02 /* PWM frequency */ #define GPIO_PWM_PERIOD 0x04 /* PWM period */ /* 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 */ #define GPIO_PIN_PWM 0x00000400 /* pwm output */ #define GPIO_PIN_MUX 0x00000800 /* pin mux */ /* 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 */ uint32_t gp_pwm_caps; /* pwm capabilities */ }; /* GPIO pin request (read/write/toggle) */ struct gpio_req { uint32_t gp_pin; /* pin number */ uint32_t gp_value; /* value */ }; /* GPIO pwm request (read/write) */ struct gpio_pwm_req { int32_t gp_pwm; /* pwm number */ uint32_t gp_pwm_pin; /* pin number */ uint32_t gp_pwm_reg; /* register */ uint32_t gp_pwm_value; /* value */ uint32_t gp_pwm_caps; /* pwm capabilities */ }; /* * 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) #define GPIOMAXPWM _IOR('G', 7, int) #define GPIOPWMGETCONFIG _IOWR('G', 8, struct gpio_pwm_req) #define GPIOPWMGET _IOWR('G', 9, struct gpio_pwm_req) #define GPIOPWMSET _IOW('G', 10, struct gpio_pwm_req) #endif /* __GPIO_H__ */