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freebsd-dev/sys/dev/evdev/input.h
Oleksandr Tymoshenko 2b3f6d6650 Add evdev protocol implementation 
evdev is a generic input event interface compatible with Linux
evdev API at ioctl level. It allows using unmodified (apart from
header name) input evdev drivers in Xorg, Wayland, Qt.

This commit has only generic kernel API. evdev support for individual
hardware drivers like ukbd, ums, atkbd, etc. will be committed later.

Project was started by Jakub Klama as part of GSoC 2014. Jakub's
evdev implementation was later used as a base, updated and finished
by Vladimir Kondratiev.

Submitted by:	Vladimir Kondratiev <wulf@cicgroup.ru>
Reviewed by:	adrian, hans
Differential Revision:	https://reviews.freebsd.org/D6998
2016-09-11 18:56:38 +00:00

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/*-
* Copyright (c) 2016 Oleksandr Tymoshenko <gonzo@FreeBSD.org>
* Copyright (c) 2015-2016 Vladimir Kondratyev <wulf@cicgroup.ru>
* 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, 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.
*
* $FreeBSD$
*/
#ifndef _EVDEV_INPUT_H
#define _EVDEV_INPUT_H
#ifndef __KERNEL__
#include <sys/time.h>
#include <sys/ioccom.h>
#include <sys/types.h>
#endif
#include "input-event-codes.h"
struct input_event {
struct timeval time;
uint16_t type;
uint16_t code;
int32_t value;
};
#define EV_VERSION 0x010001
struct input_id {
uint16_t bustype;
uint16_t vendor;
uint16_t product;
uint16_t version;
};
struct input_absinfo {
int32_t value;
int32_t minimum;
int32_t maximum;
int32_t fuzz;
int32_t flat;
int32_t resolution;
};
#define INPUT_KEYMAP_BY_INDEX (1 << 0)
struct input_keymap_entry {
uint8_t flags;
uint8_t len;
uint16_t index;
uint32_t keycode;
uint8_t scancode[32];
};
#define EVDEV_IOC_MAGIC 'E'
#define EVIOCGVERSION _IOR(EVDEV_IOC_MAGIC, 0x01, int) /* get driver version */
#define EVIOCGID _IOR(EVDEV_IOC_MAGIC, 0x02, struct input_id) /* get device ID */
#define EVIOCGREP _IOR(EVDEV_IOC_MAGIC, 0x03, unsigned int[2]) /* get repeat settings */
#define EVIOCSREP _IOW(EVDEV_IOC_MAGIC, 0x03, unsigned int[2]) /* set repeat settings */
#define EVIOCGKEYCODE _IOWR(EVDEV_IOC_MAGIC, 0x04, unsigned int[2]) /* get keycode */
#define EVIOCGKEYCODE_V2 _IOWR(EVDEV_IOC_MAGIC, 0x04, struct input_keymap_entry)
#define EVIOCSKEYCODE _IOW(EVDEV_IOC_MAGIC, 0x04, unsigned int[2]) /* set keycode */
#define EVIOCSKEYCODE_V2 _IOW(EVDEV_IOC_MAGIC, 0x04, struct input_keymap_entry)
#define EVIOCGNAME(len) _IOC(IOC_OUT, EVDEV_IOC_MAGIC, 0x06, len) /* get device name */
#define EVIOCGPHYS(len) _IOC(IOC_OUT, EVDEV_IOC_MAGIC, 0x07, len) /* get physical location */
#define EVIOCGUNIQ(len) _IOC(IOC_OUT, EVDEV_IOC_MAGIC, 0x08, len) /* get unique identifier */
#define EVIOCGPROP(len) _IOC(IOC_OUT, EVDEV_IOC_MAGIC, 0x09, len) /* get device properties */
#define EVIOCGMTSLOTS(len) _IOC(IOC_INOUT, EVDEV_IOC_MAGIC, 0x0a, len) /* get MT slots values */
#define EVIOCGKEY(len) _IOC(IOC_OUT, EVDEV_IOC_MAGIC, 0x18, len) /* get global key state */
#define EVIOCGLED(len) _IOC(IOC_OUT, EVDEV_IOC_MAGIC, 0x19, len) /* get all LEDs */
#define EVIOCGSND(len) _IOC(IOC_OUT, EVDEV_IOC_MAGIC, 0x1a, len) /* get all sounds status */
#define EVIOCGSW(len) _IOC(IOC_OUT, EVDEV_IOC_MAGIC, 0x1b, len) /* get all switch states */
#define EVIOCGBIT(ev,len) _IOC(IOC_OUT, EVDEV_IOC_MAGIC, 0x20 + (ev), len) /* get event bits */
#define EVIOCGABS(abs) _IOR(EVDEV_IOC_MAGIC, 0x40 + (abs), struct input_absinfo) /* get abs value/limits */
#define EVIOCSABS(abs) _IOW(EVDEV_IOC_MAGIC, 0xc0 + (abs), struct input_absinfo) /* set abs value/limits */
#define EVIOCSFF _IOW(EVDEV_IOC_MAGIC, 0x80, struct ff_effect) /* send a force effect to a force feedback device */
#define EVIOCRMFF _IOWINT(EVDEV_IOC_MAGIC, 0x81) /* Erase a force effect */
#define EVIOCGEFFECTS _IOR(EVDEV_IOC_MAGIC, 0x84, int) /* Report number of effects playable at the same time */
#define EVIOCGRAB _IOWINT(EVDEV_IOC_MAGIC, 0x90) /* Grab/Release device */
#define EVIOCREVOKE _IOWINT(EVDEV_IOC_MAGIC, 0x91) /* Revoke device access */
#define EVIOCSCLOCKID _IOW(EVDEV_IOC_MAGIC, 0xa0, int) /* Set clockid to be used for timestamps */
/*
* IDs.
*/
#define ID_BUS 0
#define ID_VENDOR 1
#define ID_PRODUCT 2
#define ID_VERSION 3
#define BUS_PCI 0x01
#define BUS_ISAPNP 0x02
#define BUS_USB 0x03
#define BUS_HIL 0x04
#define BUS_BLUETOOTH 0x05
#define BUS_VIRTUAL 0x06
#define BUS_ISA 0x10
#define BUS_I8042 0x11
#define BUS_XTKBD 0x12
#define BUS_RS232 0x13
#define BUS_GAMEPORT 0x14
#define BUS_PARPORT 0x15
#define BUS_AMIGA 0x16
#define BUS_ADB 0x17
#define BUS_I2C 0x18
#define BUS_HOST 0x19
#define BUS_GSC 0x1A
#define BUS_ATARI 0x1B
#define BUS_SPI 0x1C
/*
* MT_TOOL types
*/
#define MT_TOOL_FINGER 0
#define MT_TOOL_PEN 1
#define MT_TOOL_PALM 2
#define MT_TOOL_MAX 2
/*
* Values describing the status of a force-feedback effect
*/
#define FF_STATUS_STOPPED 0x00
#define FF_STATUS_PLAYING 0x01
#define FF_STATUS_MAX 0x01
/* scheduling info for force feedback effect */
struct ff_replay {
uint16_t length; /* length of the effect (ms) */
uint16_t delay; /* delay before effect starts (ms) */
};
/* trigger for force feedback effect */
struct ff_trigger {
uint16_t button; /* trigger button number */
uint16_t interval; /* delay between re-triggers */
};
/* force feedback effect envelop */
struct ff_envelope {
uint16_t attack_length; /* duration of the attach (ms) */
uint16_t attack_level; /* level at the beginning (0x0000 - 0x7fff) */
uint16_t fade_length; /* duratin of fade (ms) */
uint16_t fade_level; /* level at the end of fade */
};
struct ff_constant_effect {
int16_t level;
struct ff_envelope envelope;
};
struct ff_ramp_effect {
int16_t start_level;
int16_t end_level;
struct ff_envelope envelope;
};
struct ff_condition_effect {
/* maximum level when joystick moved to respective side */
uint16_t right_saturation;
uint16_t left_saturation;
/* how fast force grows when joystick move to the respective side */
int16_t right_coeff;
int16_t left_coeff;
uint16_t deadband; /* size of dead zone when no force is produced */
int16_t center; /* center of dead zone */
};
/*
* Force feedback periodic effect types
*/
#define FF_SQUARE 0x58
#define FF_TRIANGLE 0x59
#define FF_SINE 0x5a
#define FF_SAW_UP 0x5b
#define FF_SAW_DOWN 0x5c
#define FF_CUSTOM 0x5d
#define FF_WAVEFORM_MIN FF_SQUARE
#define FF_WAVEFORM_MAX FF_CUSTOM
struct ff_periodic_effect {
uint16_t waveform;
uint16_t period; /* ms */
int16_t magnitude; /* peak */
int16_t offset; /* mean, roughly */
uint16_t phase; /* horizontal shift */
struct ff_envelope envelope;
uint32_t custom_len; /* FF_CUSTOM waveform only */
int16_t *custom_data; /* FF_CUSTOM waveform only */
};
struct ff_rumble_effect {
uint16_t strong_magnitude; /* magnitude of the heavy motor */
uint16_t weak_magnitude; /* magnitude of the light motor */
};
/*
* Force feedback effect types
*/
#define FF_RUMBLE 0x50
#define FF_PERIODIC 0x51
#define FF_CONSTANT 0x52
#define FF_SPRING 0x53
#define FF_FRICTION 0x54
#define FF_DAMPER 0x55
#define FF_INERTIA 0x56
#define FF_RAMP 0x57
#define FF_EFFECT_MIN FF_RUMBLE
#define FF_EFFECT_MAX FF_RAMP
struct ff_effect {
uint16_t type;
int16_t id;
uint16_t direction; /* [0 .. 360) degrees -> [0 .. 0x10000) */
struct ff_trigger trigger;
struct ff_replay replay;
union {
struct ff_constant_effect constant;
struct ff_ramp_effect ramp;
struct ff_periodic_effect periodic;
struct ff_condition_effect condition[2]; /* One for each axis */
struct ff_rumble_effect rumble;
} u;
};
/*
* force feedback device properties
*/
#define FF_GAIN 0x60
#define FF_AUTOCENTER 0x61
#define FF_MAX 0x7f
#define FF_CNT (FF_MAX+1)
#endif /* _EVDEV_INPUT_H */
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