include/uapi/linux/input.h

   1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
   2 /*
   3  * Copyright (c) 1999-2002 Vojtech Pavlik
   4  *
   5  * This program is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 as published by
   7  * the Free Software Foundation.
   8  */
   9 #ifndef _UAPI_INPUT_H
  10 #define _UAPI_INPUT_H
  11
  12
  13 #ifndef __KERNEL__
  14 #include <sys/time.h>
  15 #include <sys/ioctl.h>
  16 #include <sys/types.h>
  17 #include <linux/types.h>
  18 #endif
  19
  20 #include "input-event-codes.h"
  21
  22 /*
  23  * The event structure itself
  24  * Note that __USE_TIME_BITS64 is defined by libc based on
  25  * application's request to use 64 bit time_t.
  26  */
  27
  28 struct input_event {
  29 #if (__BITS_PER_LONG != 32 || !defined(__USE_TIME_BITS64)) && !defined(__KERNEL__)
  30         struct timeval time;
  31 #define input_event_sec time.tv_sec
  32 #define input_event_usec time.tv_usec
  33 #else
  34         __kernel_ulong_t __sec;
  35 #if defined(__sparc__) && defined(__arch64__)
  36         unsigned int __usec;
  37 #else
  38         __kernel_ulong_t __usec;
  39 #endif
  40 #define input_event_sec  __sec
  41 #define input_event_usec __usec
  42 #endif
  43         __u16 type;
  44         __u16 code;
  45         __s32 value;
  46 };
  47
  48 /*
  49  * Protocol version.
  50  */
  51
  52 #define EV_VERSION              0x010001
  53
  54 /*
  55  * IOCTLs (0x00 - 0x7f)
  56  */
  57
  58 struct input_id {
  59         __u16 bustype;
  60         __u16 vendor;
  61         __u16 product;
  62         __u16 version;
  63 };
  64
  65 /**
  66  * struct input_absinfo - used by EVIOCGABS/EVIOCSABS ioctls
  67  * @value: latest reported value for the axis.
  68  * @minimum: specifies minimum value for the axis.
  69  * @maximum: specifies maximum value for the axis.
  70  * @fuzz: specifies fuzz value that is used to filter noise from
  71  *      the event stream.
  72  * @flat: values that are within this value will be discarded by
  73  *      joydev interface and reported as 0 instead.
  74  * @resolution: specifies resolution for the values reported for
  75  *      the axis.
  76  *
  77  * Note that input core does not clamp reported values to the
  78  * [minimum, maximum] limits, such task is left to userspace.
  79  *
  80  * The default resolution for main axes (ABS_X, ABS_Y, ABS_Z)
  81  * is reported in units per millimeter (units/mm), resolution
  82  * for rotational axes (ABS_RX, ABS_RY, ABS_RZ) is reported
  83  * in units per radian.
  84  * When INPUT_PROP_ACCELEROMETER is set the resolution changes.
  85  * The main axes (ABS_X, ABS_Y, ABS_Z) are then reported in
  86  * in units per g (units/g) and in units per degree per second
  87  * (units/deg/s) for rotational axes (ABS_RX, ABS_RY, ABS_RZ).
  88  */
  89 struct input_absinfo {
  90         __s32 value;
  91         __s32 minimum;
  92         __s32 maximum;
  93         __s32 fuzz;
  94         __s32 flat;
  95         __s32 resolution;
  96 };
  97
  98 /**
  99  * struct input_keymap_entry - used by EVIOCGKEYCODE/EVIOCSKEYCODE ioctls
 100  * @scancode: scancode represented in machine-endian form.
 101  * @len: length of the scancode that resides in @scancode buffer.
 102  * @index: index in the keymap, may be used instead of scancode
 103  * @flags: allows to specify how kernel should handle the request. For
 104  *      example, setting INPUT_KEYMAP_BY_INDEX flag indicates that kernel
 105  *      should perform lookup in keymap by @index instead of @scancode
 106  * @keycode: key code assigned to this scancode
 107  *
 108  * The structure is used to retrieve and modify keymap data. Users have
 109  * option of performing lookup either by @scancode itself or by @index
 110  * in keymap entry. EVIOCGKEYCODE will also return scancode or index
 111  * (depending on which element was used to perform lookup).
 112  */
 113 struct input_keymap_entry {
 114 #define INPUT_KEYMAP_BY_INDEX   (1 << 0)
 115         __u8  flags;
 116         __u8  len;
 117         __u16 index;
 118         __u32 keycode;
 119         __u8  scancode[32];
 120 };
 121
 122 struct input_mask {
 123         __u32 type;
 124         __u32 codes_size;
 125         __u64 codes_ptr;
 126 };
 127
 128 #define EVIOCGVERSION           _IOR('E', 0x01, int)                    /* get driver version */
 129 #define EVIOCGID                _IOR('E', 0x02, struct input_id)        /* get device ID */
 130 #define EVIOCGREP               _IOR('E', 0x03, unsigned int[2])        /* get repeat settings */
 131 #define EVIOCSREP               _IOW('E', 0x03, unsigned int[2])        /* set repeat settings */
 132
 133 #define EVIOCGKEYCODE           _IOR('E', 0x04, unsigned int[2])        /* get keycode */
 134 #define EVIOCGKEYCODE_V2        _IOR('E', 0x04, struct input_keymap_entry)
 135 #define EVIOCSKEYCODE           _IOW('E', 0x04, unsigned int[2])        /* set keycode */
 136 #define EVIOCSKEYCODE_V2        _IOW('E', 0x04, struct input_keymap_entry)
 137
 138 #define EVIOCGNAME(len)         _IOC(_IOC_READ, 'E', 0x06, len)         /* get device name */
 139 #define EVIOCGPHYS(len)         _IOC(_IOC_READ, 'E', 0x07, len)         /* get physical location */
 140 #define EVIOCGUNIQ(len)         _IOC(_IOC_READ, 'E', 0x08, len)         /* get unique identifier */
 141 #define EVIOCGPROP(len)         _IOC(_IOC_READ, 'E', 0x09, len)         /* get device properties */
 142
 143 /**
 144  * EVIOCGMTSLOTS(len) - get MT slot values
 145  * @len: size of the data buffer in bytes
 146  *
 147  * The ioctl buffer argument should be binary equivalent to
 148  *
 149  * struct input_mt_request_layout {
 150  *      __u32 code;
 151  *      __s32 values[num_slots];
 152  * };
 153  *
 154  * where num_slots is the (arbitrary) number of MT slots to extract.
 155  *
 156  * The ioctl size argument (len) is the size of the buffer, which
 157  * should satisfy len = (num_slots + 1) * sizeof(__s32).  If len is
 158  * too small to fit all available slots, the first num_slots are
 159  * returned.
 160  *
 161  * Before the call, code is set to the wanted ABS_MT event type. On
 162  * return, values[] is filled with the slot values for the specified
 163  * ABS_MT code.
 164  *
 165  * If the request code is not an ABS_MT value, -EINVAL is returned.
 166  */
 167 #define EVIOCGMTSLOTS(len)      _IOC(_IOC_READ, 'E', 0x0a, len)
 168
 169 #define EVIOCGKEY(len)          _IOC(_IOC_READ, 'E', 0x18, len)         /* get global key state */
 170 #define EVIOCGLED(len)          _IOC(_IOC_READ, 'E', 0x19, len)         /* get all LEDs */
 171 #define EVIOCGSND(len)          _IOC(_IOC_READ, 'E', 0x1a, len)         /* get all sounds status */
 172 #define EVIOCGSW(len)           _IOC(_IOC_READ, 'E', 0x1b, len)         /* get all switch states */
 173
 174 #define EVIOCGBIT(ev,len)       _IOC(_IOC_READ, 'E', 0x20 + (ev), len)  /* get event bits */
 175 #define EVIOCGABS(abs)          _IOR('E', 0x40 + (abs), struct input_absinfo)   /* get abs value/limits */
 176 #define EVIOCSABS(abs)          _IOW('E', 0xc0 + (abs), struct input_absinfo)   /* set abs value/limits */
 177
 178 #define EVIOCSFF                _IOW('E', 0x80, struct ff_effect)       /* send a force effect to a force feedback device */
 179 #define EVIOCRMFF               _IOW('E', 0x81, int)                    /* Erase a force effect */
 180 #define EVIOCGEFFECTS           _IOR('E', 0x84, int)                    /* Report number of effects playable at the same time */
 181
 182 #define EVIOCGRAB               _IOW('E', 0x90, int)                    /* Grab/Release device */
 183 #define EVIOCREVOKE             _IOW('E', 0x91, int)                    /* Revoke device access */
 184
 185 /**
 186  * EVIOCGMASK - Retrieve current event mask
 187  *
 188  * This ioctl allows user to retrieve the current event mask for specific
 189  * event type. The argument must be of type "struct input_mask" and
 190  * specifies the event type to query, the address of the receive buffer and
 191  * the size of the receive buffer.
 192  *
 193  * The event mask is a per-client mask that specifies which events are
 194  * forwarded to the client. Each event code is represented by a single bit
 195  * in the event mask. If the bit is set, the event is passed to the client
 196  * normally. Otherwise, the event is filtered and will never be queued on
 197  * the client's receive buffer.
 198  *
 199  * Event masks do not affect global state of the input device. They only
 200  * affect the file descriptor they are applied to.
 201  *
 202  * The default event mask for a client has all bits set, i.e. all events
 203  * are forwarded to the client. If the kernel is queried for an unknown
 204  * event type or if the receive buffer is larger than the number of
 205  * event codes known to the kernel, the kernel returns all zeroes for those
 206  * codes.
 207  *
 208  * At maximum, codes_size bytes are copied.
 209  *
 210  * This ioctl may fail with ENODEV in case the file is revoked, EFAULT
 211  * if the receive-buffer points to invalid memory, or EINVAL if the kernel
 212  * does not implement the ioctl.
 213  */
 214 #define EVIOCGMASK              _IOR('E', 0x92, struct input_mask)      /* Get event-masks */
 215
 216 /**
 217  * EVIOCSMASK - Set event mask
 218  *
 219  * This ioctl is the counterpart to EVIOCGMASK. Instead of receiving the
 220  * current event mask, this changes the client's event mask for a specific
 221  * type.  See EVIOCGMASK for a description of event-masks and the
 222  * argument-type.
 223  *
 224  * This ioctl provides full forward compatibility. If the passed event type
 225  * is unknown to the kernel, or if the number of event codes specified in
 226  * the mask is bigger than what is known to the kernel, the ioctl is still
 227  * accepted and applied. However, any unknown codes are left untouched and
 228  * stay cleared. That means, the kernel always filters unknown codes
 229  * regardless of what the client requests.  If the new mask doesn't cover
 230  * all known event-codes, all remaining codes are automatically cleared and
 231  * thus filtered.
 232  *
 233  * This ioctl may fail with ENODEV in case the file is revoked. EFAULT is
 234  * returned if the receive-buffer points to invalid memory. EINVAL is returned
 235  * if the kernel does not implement the ioctl.
 236  */
 237 #define EVIOCSMASK              _IOW('E', 0x93, struct input_mask)      /* Set event-masks */
 238
 239 #define EVIOCSCLOCKID           _IOW('E', 0xa0, int)                    /* Set clockid to be used for timestamps */
 240
 241 /*
 242  * IDs.
 243  */
 244
 245 #define ID_BUS                  0
 246 #define ID_VENDOR               1
 247 #define ID_PRODUCT              2
 248 #define ID_VERSION              3
 249
 250 #define BUS_PCI                 0x01
 251 #define BUS_ISAPNP              0x02
 252 #define BUS_USB                 0x03
 253 #define BUS_HIL                 0x04
 254 #define BUS_BLUETOOTH           0x05
 255 #define BUS_VIRTUAL             0x06
 256
 257 #define BUS_ISA                 0x10
 258 #define BUS_I8042               0x11
 259 #define BUS_XTKBD               0x12
 260 #define BUS_RS232               0x13
 261 #define BUS_GAMEPORT            0x14
 262 #define BUS_PARPORT             0x15
 263 #define BUS_AMIGA               0x16
 264 #define BUS_ADB                 0x17
 265 #define BUS_I2C                 0x18
 266 #define BUS_HOST                0x19
 267 #define BUS_GSC                 0x1A
 268 #define BUS_ATARI               0x1B
 269 #define BUS_SPI                 0x1C
 270 #define BUS_RMI                 0x1D
 271 #define BUS_CEC                 0x1E
 272 #define BUS_INTEL_ISHTP         0x1F
 273
 274 /*
 275  * MT_TOOL types
 276  */
 277 #define MT_TOOL_FINGER          0x00
 278 #define MT_TOOL_PEN             0x01
 279 #define MT_TOOL_PALM            0x02
 280 #define MT_TOOL_DIAL            0x0a
 281 #define MT_TOOL_MAX             0x0f
 282
 283 /*
 284  * Values describing the status of a force-feedback effect
 285  */
 286 #define FF_STATUS_STOPPED       0x00
 287 #define FF_STATUS_PLAYING       0x01
 288 #define FF_STATUS_MAX           0x01
 289
 290 /*
 291  * Structures used in ioctls to upload effects to a device
 292  * They are pieces of a bigger structure (called ff_effect)
 293  */
 294
 295 /*
 296  * All duration values are expressed in ms. Values above 32767 ms (0x7fff)
 297  * should not be used and have unspecified results.
 298  */
 299
 300 /**
 301  * struct ff_replay - defines scheduling of the force-feedback effect
 302  * @length: duration of the effect
 303  * @delay: delay before effect should start playing
 304  */
 305 struct ff_replay {
 306         __u16 length;
 307         __u16 delay;
 308 };
 309
 310 /**
 311  * struct ff_trigger - defines what triggers the force-feedback effect
 312  * @button: number of the button triggering the effect
 313  * @interval: controls how soon the effect can be re-triggered
 314  */
 315 struct ff_trigger {
 316         __u16 button;
 317         __u16 interval;
 318 };
 319
 320 /**
 321  * struct ff_envelope - generic force-feedback effect envelope
 322  * @attack_length: duration of the attack (ms)
 323  * @attack_level: level at the beginning of the attack
 324  * @fade_length: duration of fade (ms)
 325  * @fade_level: level at the end of fade
 326  *
 327  * The @attack_level and @fade_level are absolute values; when applying
 328  * envelope force-feedback core will convert to positive/negative
 329  * value based on polarity of the default level of the effect.
 330  * Valid range for the attack and fade levels is 0x0000 - 0x7fff
 331  */
 332 struct ff_envelope {
 333         __u16 attack_length;
 334         __u16 attack_level;
 335         __u16 fade_length;
 336         __u16 fade_level;
 337 };
 338
 339 /**
 340  * struct ff_constant_effect - defines parameters of a constant force-feedback effect
 341  * @level: strength of the effect; may be negative
 342  * @envelope: envelope data
 343  */
 344 struct ff_constant_effect {
 345         __s16 level;
 346         struct ff_envelope envelope;
 347 };
 348
 349 /**
 350  * struct ff_ramp_effect - defines parameters of a ramp force-feedback effect
 351  * @start_level: beginning strength of the effect; may be negative
 352  * @end_level: final strength of the effect; may be negative
 353  * @envelope: envelope data
 354  */
 355 struct ff_ramp_effect {
 356         __s16 start_level;
 357         __s16 end_level;
 358         struct ff_envelope envelope;
 359 };
 360
 361 /**
 362  * struct ff_condition_effect - defines a spring or friction force-feedback effect
 363  * @right_saturation: maximum level when joystick moved all way to the right
 364  * @left_saturation: same for the left side
 365  * @right_coeff: controls how fast the force grows when the joystick moves
 366  *      to the right
 367  * @left_coeff: same for the left side
 368  * @deadband: size of the dead zone, where no force is produced
 369  * @center: position of the dead zone
 370  */
 371 struct ff_condition_effect {
 372         __u16 right_saturation;
 373         __u16 left_saturation;
 374
 375         __s16 right_coeff;
 376         __s16 left_coeff;
 377
 378         __u16 deadband;
 379         __s16 center;
 380 };
 381
 382 /**
 383  * struct ff_periodic_effect - defines parameters of a periodic force-feedback effect
 384  * @waveform: kind of the effect (wave)
 385  * @period: period of the wave (ms)
 386  * @magnitude: peak value
 387  * @offset: mean value of the wave (roughly)
 388  * @phase: 'horizontal' shift
 389  * @envelope: envelope data
 390  * @custom_len: number of samples (FF_CUSTOM only)
 391  * @custom_data: buffer of samples (FF_CUSTOM only)
 392  *
 393  * Known waveforms - FF_SQUARE, FF_TRIANGLE, FF_SINE, FF_SAW_UP,
 394  * FF_SAW_DOWN, FF_CUSTOM. The exact syntax FF_CUSTOM is undefined
 395  * for the time being as no driver supports it yet.
 396  *
 397  * Note: the data pointed by custom_data is copied by the driver.
 398  * You can therefore dispose of the memory after the upload/update.
 399  */
 400 struct ff_periodic_effect {
 401         __u16 waveform;
 402         __u16 period;
 403         __s16 magnitude;
 404         __s16 offset;
 405         __u16 phase;
 406
 407         struct ff_envelope envelope;
 408
 409         __u32 custom_len;
 410         __s16 __user *custom_data;
 411 };
 412
 413 /**
 414  * struct ff_rumble_effect - defines parameters of a periodic force-feedback effect
 415  * @strong_magnitude: magnitude of the heavy motor
 416  * @weak_magnitude: magnitude of the light one
 417  *
 418  * Some rumble pads have two motors of different weight. Strong_magnitude
 419  * represents the magnitude of the vibration generated by the heavy one.
 420  */
 421 struct ff_rumble_effect {
 422         __u16 strong_magnitude;
 423         __u16 weak_magnitude;
 424 };
 425
 426 /**
 427  * struct ff_effect - defines force feedback effect
 428  * @type: type of the effect (FF_CONSTANT, FF_PERIODIC, FF_RAMP, FF_SPRING,
 429  *      FF_FRICTION, FF_DAMPER, FF_RUMBLE, FF_INERTIA, or FF_CUSTOM)
 430  * @id: an unique id assigned to an effect
 431  * @direction: direction of the effect
 432  * @trigger: trigger conditions (struct ff_trigger)
 433  * @replay: scheduling of the effect (struct ff_replay)
 434  * @u: effect-specific structure (one of ff_constant_effect, ff_ramp_effect,
 435  *      ff_periodic_effect, ff_condition_effect, ff_rumble_effect) further
 436  *      defining effect parameters
 437  *
 438  * This structure is sent through ioctl from the application to the driver.
 439  * To create a new effect application should set its @id to -1; the kernel
 440  * will return assigned @id which can later be used to update or delete
 441  * this effect.
 442  *
 443  * Direction of the effect is encoded as follows:
 444  *      0 deg -> 0x0000 (down)
 445  *      90 deg -> 0x4000 (left)
 446  *      180 deg -> 0x8000 (up)
 447  *      270 deg -> 0xC000 (right)
 448  */
 449 struct ff_effect {
 450         __u16 type;
 451         __s16 id;
 452         __u16 direction;
 453         struct ff_trigger trigger;
 454         struct ff_replay replay;
 455
 456         union {
 457                 struct ff_constant_effect constant;
 458                 struct ff_ramp_effect ramp;
 459                 struct ff_periodic_effect periodic;
 460                 struct ff_condition_effect condition[2]; /* One for each axis */
 461                 struct ff_rumble_effect rumble;
 462         } u;
 463 };
 464
 465 /*
 466  * Force feedback effect types
 467  */
 468
 469 #define FF_RUMBLE       0x50
 470 #define FF_PERIODIC     0x51
 471 #define FF_CONSTANT     0x52
 472 #define FF_SPRING       0x53
 473 #define FF_FRICTION     0x54
 474 #define FF_DAMPER       0x55
 475 #define FF_INERTIA      0x56
 476 #define FF_RAMP         0x57
 477
 478 #define FF_EFFECT_MIN   FF_RUMBLE
 479 #define FF_EFFECT_MAX   FF_RAMP
 480
 481 /*
 482  * Force feedback periodic effect types
 483  */
 484
 485 #define FF_SQUARE       0x58
 486 #define FF_TRIANGLE     0x59
 487 #define FF_SINE         0x5a
 488 #define FF_SAW_UP       0x5b
 489 #define FF_SAW_DOWN     0x5c
 490 #define FF_CUSTOM       0x5d
 491
 492 #define FF_WAVEFORM_MIN FF_SQUARE
 493 #define FF_WAVEFORM_MAX FF_CUSTOM
 494
 495 /*
 496  * Set ff device properties
 497  */
 498
 499 #define FF_GAIN         0x60
 500 #define FF_AUTOCENTER   0x61
 501
 502 /*
 503  * ff->playback(effect_id = FF_GAIN) is the first effect_id to
 504  * cause a collision with another ff method, in this case ff->set_gain().
 505  * Therefore the greatest safe value for effect_id is FF_GAIN - 1,
 506  * and thus the total number of effects should never exceed FF_GAIN.
 507  */
 508 #define FF_MAX_EFFECTS  FF_GAIN
 509
 510 #define FF_MAX          0x7f
 511 #define FF_CNT          (FF_MAX+1)
 512
 513 #endif /* _UAPI_INPUT_H */