LXR linux/include/linux/hid.h

   1#ifndef __HID_H
   2#define __HID_H
   3
   4/*
   5 *  Copyright (c) 1999 Andreas Gal
   6 *  Copyright (c) 2000-2001 Vojtech Pavlik
   7 *  Copyright (c) 2006-2007 Jiri Kosina
   8 */
   9
  10/*
  11 * This program is free software; you can redistribute it and/or modify
  12 * it under the terms of the GNU General Public License as published by
  13 * the Free Software Foundation; either version 2 of the License, or
  14 * (at your option) any later version.
  15 *
  16 * This program is distributed in the hope that it will be useful,
  17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  19 * GNU General Public License for more details.
  20 *
  21 * You should have received a copy of the GNU General Public License
  22 * along with this program; if not, write to the Free Software
  23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  24 *
  25 * Should you need to contact me, the author, you can do so either by
  26 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  27 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  28 */
  29
  30/*
  31 * USB HID (Human Interface Device) interface class code
  32 */
  33
  34#define USB_INTERFACE_CLASS_HID         3
  35
  36/*
  37 * USB HID interface subclass and protocol codes
  38 */
  39
  40#define USB_INTERFACE_SUBCLASS_BOOT     1
  41#define USB_INTERFACE_PROTOCOL_KEYBOARD 1
  42#define USB_INTERFACE_PROTOCOL_MOUSE    2
  43
  44/*
  45 * HID class requests
  46 */
  47
  48#define HID_REQ_GET_REPORT              0x01
  49#define HID_REQ_GET_IDLE                0x02
  50#define HID_REQ_GET_PROTOCOL            0x03
  51#define HID_REQ_SET_REPORT              0x09
  52#define HID_REQ_SET_IDLE                0x0A
  53#define HID_REQ_SET_PROTOCOL            0x0B
  54
  55/*
  56 * HID class descriptor types
  57 */
  58
  59#define HID_DT_HID                      (USB_TYPE_CLASS | 0x01)
  60#define HID_DT_REPORT                   (USB_TYPE_CLASS | 0x02)
  61#define HID_DT_PHYSICAL                 (USB_TYPE_CLASS | 0x03)
  62
  63#define HID_MAX_DESCRIPTOR_SIZE         4096
  64
  65#ifdef __KERNEL__
  66
  67#include <linux/types.h>
  68#include <linux/slab.h>
  69#include <linux/list.h>
  70#include <linux/mod_devicetable.h> /* hid_device_id */
  71#include <linux/timer.h>
  72#include <linux/workqueue.h>
  73#include <linux/input.h>
  74
  75/*
  76 * We parse each description item into this structure. Short items data
  77 * values are expanded to 32-bit signed int, long items contain a pointer
  78 * into the data area.
  79 */
  80
  81struct hid_item {
  82        unsigned  format;
  83        __u8      size;
  84        __u8      type;
  85        __u8      tag;
  86        union {
  87            __u8   u8;
  88            __s8   s8;
  89            __u16  u16;
  90            __s16  s16;
  91            __u32  u32;
  92            __s32  s32;
  93            __u8  *longdata;
  94        } data;
  95};
  96
  97/*
  98 * HID report item format
  99 */
 100
 101#define HID_ITEM_FORMAT_SHORT   0
 102#define HID_ITEM_FORMAT_LONG    1
 103
 104/*
 105 * Special tag indicating long items
 106 */
 107
 108#define HID_ITEM_TAG_LONG       15
 109
 110/*
 111 * HID report descriptor item type (prefix bit 2,3)
 112 */
 113
 114#define HID_ITEM_TYPE_MAIN              0
 115#define HID_ITEM_TYPE_GLOBAL            1
 116#define HID_ITEM_TYPE_LOCAL             2
 117#define HID_ITEM_TYPE_RESERVED          3
 118
 119/*
 120 * HID report descriptor main item tags
 121 */
 122
 123#define HID_MAIN_ITEM_TAG_INPUT                 8
 124#define HID_MAIN_ITEM_TAG_OUTPUT                9
 125#define HID_MAIN_ITEM_TAG_FEATURE               11
 126#define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION      10
 127#define HID_MAIN_ITEM_TAG_END_COLLECTION        12
 128
 129/*
 130 * HID report descriptor main item contents
 131 */
 132
 133#define HID_MAIN_ITEM_CONSTANT          0x001
 134#define HID_MAIN_ITEM_VARIABLE          0x002
 135#define HID_MAIN_ITEM_RELATIVE          0x004
 136#define HID_MAIN_ITEM_WRAP              0x008
 137#define HID_MAIN_ITEM_NONLINEAR         0x010
 138#define HID_MAIN_ITEM_NO_PREFERRED      0x020
 139#define HID_MAIN_ITEM_NULL_STATE        0x040
 140#define HID_MAIN_ITEM_VOLATILE          0x080
 141#define HID_MAIN_ITEM_BUFFERED_BYTE     0x100
 142
 143/*
 144 * HID report descriptor collection item types
 145 */
 146
 147#define HID_COLLECTION_PHYSICAL         0
 148#define HID_COLLECTION_APPLICATION      1
 149#define HID_COLLECTION_LOGICAL          2
 150
 151/*
 152 * HID report descriptor global item tags
 153 */
 154
 155#define HID_GLOBAL_ITEM_TAG_USAGE_PAGE          0
 156#define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM     1
 157#define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM     2
 158#define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM    3
 159#define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM    4
 160#define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT       5
 161#define HID_GLOBAL_ITEM_TAG_UNIT                6
 162#define HID_GLOBAL_ITEM_TAG_REPORT_SIZE         7
 163#define HID_GLOBAL_ITEM_TAG_REPORT_ID           8
 164#define HID_GLOBAL_ITEM_TAG_REPORT_COUNT        9
 165#define HID_GLOBAL_ITEM_TAG_PUSH                10
 166#define HID_GLOBAL_ITEM_TAG_POP                 11
 167
 168/*
 169 * HID report descriptor local item tags
 170 */
 171
 172#define HID_LOCAL_ITEM_TAG_USAGE                0
 173#define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM        1
 174#define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM        2
 175#define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX     3
 176#define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM   4
 177#define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM   5
 178#define HID_LOCAL_ITEM_TAG_STRING_INDEX         7
 179#define HID_LOCAL_ITEM_TAG_STRING_MINIMUM       8
 180#define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM       9
 181#define HID_LOCAL_ITEM_TAG_DELIMITER            10
 182
 183/*
 184 * HID usage tables
 185 */
 186
 187#define HID_USAGE_PAGE          0xffff0000
 188
 189#define HID_UP_UNDEFINED        0x00000000
 190#define HID_UP_GENDESK          0x00010000
 191#define HID_UP_SIMULATION       0x00020000
 192#define HID_UP_KEYBOARD         0x00070000
 193#define HID_UP_LED              0x00080000
 194#define HID_UP_BUTTON           0x00090000
 195#define HID_UP_ORDINAL          0x000a0000
 196#define HID_UP_CONSUMER         0x000c0000
 197#define HID_UP_DIGITIZER        0x000d0000
 198#define HID_UP_PID              0x000f0000
 199#define HID_UP_HPVENDOR         0xff7f0000
 200#define HID_UP_MSVENDOR         0xff000000
 201#define HID_UP_CUSTOM           0x00ff0000
 202#define HID_UP_LOGIVENDOR       0xffbc0000
 203
 204#define HID_USAGE               0x0000ffff
 205
 206#define HID_GD_POINTER          0x00010001
 207#define HID_GD_MOUSE            0x00010002
 208#define HID_GD_JOYSTICK         0x00010004
 209#define HID_GD_GAMEPAD          0x00010005
 210#define HID_GD_KEYBOARD         0x00010006
 211#define HID_GD_KEYPAD           0x00010007
 212#define HID_GD_MULTIAXIS        0x00010008
 213#define HID_GD_X                0x00010030
 214#define HID_GD_Y                0x00010031
 215#define HID_GD_Z                0x00010032
 216#define HID_GD_RX               0x00010033
 217#define HID_GD_RY               0x00010034
 218#define HID_GD_RZ               0x00010035
 219#define HID_GD_SLIDER           0x00010036
 220#define HID_GD_DIAL             0x00010037
 221#define HID_GD_WHEEL            0x00010038
 222#define HID_GD_HATSWITCH        0x00010039
 223#define HID_GD_BUFFER           0x0001003a
 224#define HID_GD_BYTECOUNT        0x0001003b
 225#define HID_GD_MOTION           0x0001003c
 226#define HID_GD_START            0x0001003d
 227#define HID_GD_SELECT           0x0001003e
 228#define HID_GD_VX               0x00010040
 229#define HID_GD_VY               0x00010041
 230#define HID_GD_VZ               0x00010042
 231#define HID_GD_VBRX             0x00010043
 232#define HID_GD_VBRY             0x00010044
 233#define HID_GD_VBRZ             0x00010045
 234#define HID_GD_VNO              0x00010046
 235#define HID_GD_FEATURE          0x00010047
 236#define HID_GD_UP               0x00010090
 237#define HID_GD_DOWN             0x00010091
 238#define HID_GD_RIGHT            0x00010092
 239#define HID_GD_LEFT             0x00010093
 240
 241/*
 242 * HID report types --- Ouch! HID spec says 1 2 3!
 243 */
 244
 245#define HID_INPUT_REPORT        0
 246#define HID_OUTPUT_REPORT       1
 247#define HID_FEATURE_REPORT      2
 248
 249/*
 250 * HID connect requests
 251 */
 252
 253#define HID_CONNECT_HIDINPUT            0x01
 254#define HID_CONNECT_HIDINPUT_FORCE      0x02
 255#define HID_CONNECT_HIDRAW              0x04
 256#define HID_CONNECT_HIDDEV              0x08
 257#define HID_CONNECT_HIDDEV_FORCE        0x10
 258#define HID_CONNECT_FF                  0x20
 259#define HID_CONNECT_DEFAULT     (HID_CONNECT_HIDINPUT|HID_CONNECT_HIDRAW| \
 260                HID_CONNECT_HIDDEV|HID_CONNECT_FF)
 261
 262/*
 263 * HID device quirks.
 264 */
 265
 266/* 
 267 * Increase this if you need to configure more HID quirks at module load time
 268 */
 269#define MAX_USBHID_BOOT_QUIRKS 4
 270
 271#define HID_QUIRK_INVERT                        0x00000001
 272#define HID_QUIRK_NOTOUCH                       0x00000002
 273#define HID_QUIRK_NOGET                         0x00000008
 274#define HID_QUIRK_BADPAD                        0x00000020
 275#define HID_QUIRK_MULTI_INPUT                   0x00000040
 276#define HID_QUIRK_SKIP_OUTPUT_REPORTS           0x00010000
 277#define HID_QUIRK_FULLSPEED_INTERVAL            0x10000000
 278
 279/*
 280 * This is the global environment of the parser. This information is
 281 * persistent for main-items. The global environment can be saved and
 282 * restored with PUSH/POP statements.
 283 */
 284
 285struct hid_global {
 286        unsigned usage_page;
 287        __s32    logical_minimum;
 288        __s32    logical_maximum;
 289        __s32    physical_minimum;
 290        __s32    physical_maximum;
 291        __s32    unit_exponent;
 292        unsigned unit;
 293        unsigned report_id;
 294        unsigned report_size;
 295        unsigned report_count;
 296};
 297
 298/*
 299 * This is the local environment. It is persistent up the next main-item.
 300 */
 301
 302#define HID_MAX_USAGES                  12288
 303#define HID_DEFAULT_NUM_COLLECTIONS     16
 304
 305struct hid_local {
 306        unsigned usage[HID_MAX_USAGES]; /* usage array */
 307        unsigned collection_index[HID_MAX_USAGES]; /* collection index array */
 308        unsigned usage_index;
 309        unsigned usage_minimum;
 310        unsigned delimiter_depth;
 311        unsigned delimiter_branch;
 312};
 313
 314/*
 315 * This is the collection stack. We climb up the stack to determine
 316 * application and function of each field.
 317 */
 318
 319struct hid_collection {
 320        unsigned type;
 321        unsigned usage;
 322        unsigned level;
 323};
 324
 325struct hid_usage {
 326        unsigned  hid;                  /* hid usage code */
 327        unsigned  collection_index;     /* index into collection array */
 328        /* hidinput data */
 329        __u16     code;                 /* input driver code */
 330        __u8      type;                 /* input driver type */
 331        __s8      hat_min;              /* hat switch fun */
 332        __s8      hat_max;              /* ditto */
 333        __s8      hat_dir;              /* ditto */
 334};
 335
 336struct hid_input;
 337
 338struct hid_field {
 339        unsigned  physical;             /* physical usage for this field */
 340        unsigned  logical;              /* logical usage for this field */
 341        unsigned  application;          /* application usage for this field */
 342        struct hid_usage *usage;        /* usage table for this function */
 343        unsigned  maxusage;             /* maximum usage index */
 344        unsigned  flags;                /* main-item flags (i.e. volatile,array,constant) */
 345        unsigned  report_offset;        /* bit offset in the report */
 346        unsigned  report_size;          /* size of this field in the report */
 347        unsigned  report_count;         /* number of this field in the report */
 348        unsigned  report_type;          /* (input,output,feature) */
 349        __s32    *value;                /* last known value(s) */
 350        __s32     logical_minimum;
 351        __s32     logical_maximum;
 352        __s32     physical_minimum;
 353        __s32     physical_maximum;
 354        __s32     unit_exponent;
 355        unsigned  unit;
 356        struct hid_report *report;      /* associated report */
 357        unsigned index;                 /* index into report->field[] */
 358        /* hidinput data */
 359        struct hid_input *hidinput;     /* associated input structure */
 360        __u16 dpad;                     /* dpad input code */
 361};
 362
 363#define HID_MAX_FIELDS 64
 364
 365struct hid_report {
 366        struct list_head list;
 367        unsigned id;                                    /* id of this report */
 368        unsigned type;                                  /* report type */
 369        struct hid_field *field[HID_MAX_FIELDS];        /* fields of the report */
 370        unsigned maxfield;                              /* maximum valid field index */
 371        unsigned size;                                  /* size of the report (bits) */
 372        struct hid_device *device;                      /* associated device */
 373};
 374
 375struct hid_report_enum {
 376        unsigned numbered;
 377        struct list_head report_list;
 378        struct hid_report *report_id_hash[256];
 379};
 380
 381#define HID_REPORT_TYPES 3
 382
 383#define HID_MIN_BUFFER_SIZE     64              /* make sure there is at least a packet size of space */
 384#define HID_MAX_BUFFER_SIZE     4096            /* 4kb */
 385#define HID_CONTROL_FIFO_SIZE   256             /* to init devices with >100 reports */
 386#define HID_OUTPUT_FIFO_SIZE    64
 387
 388struct hid_control_fifo {
 389        unsigned char dir;
 390        struct hid_report *report;
 391        char *raw_report;
 392};
 393
 394struct hid_output_fifo {
 395        struct hid_report *report;
 396        char *raw_report;
 397};
 398
 399#define HID_CLAIMED_INPUT       1
 400#define HID_CLAIMED_HIDDEV      2
 401#define HID_CLAIMED_HIDRAW      4
 402
 403#define HID_STAT_ADDED          1
 404#define HID_STAT_PARSED         2
 405
 406struct hid_input {
 407        struct list_head list;
 408        struct hid_report *report;
 409        struct input_dev *input;
 410};
 411
 412enum hid_type {
 413        HID_TYPE_OTHER = 0,
 414        HID_TYPE_USBMOUSE
 415};
 416
 417struct hid_driver;
 418struct hid_ll_driver;
 419
 420struct hid_device {                                                     /* device report descriptor */
 421        __u8 *rdesc;
 422        unsigned rsize;
 423        struct hid_collection *collection;                              /* List of HID collections */
 424        unsigned collection_size;                                       /* Number of allocated hid_collections */
 425        unsigned maxcollection;                                         /* Number of parsed collections */
 426        unsigned maxapplication;                                        /* Number of applications */
 427        __u16 bus;                                                      /* BUS ID */
 428        __u32 vendor;                                                   /* Vendor ID */
 429        __u32 product;                                                  /* Product ID */
 430        __u32 version;                                                  /* HID version */
 431        enum hid_type type;                                             /* device type (mouse, kbd, ...) */
 432        unsigned country;                                               /* HID country */
 433        struct hid_report_enum report_enum[HID_REPORT_TYPES];
 434
 435        struct device dev;                                              /* device */
 436        struct hid_driver *driver;
 437        struct hid_ll_driver *ll_driver;
 438
 439        unsigned int status;                                            /* see STAT flags above */
 440        unsigned claimed;                                               /* Claimed by hidinput, hiddev? */
 441        unsigned quirks;                                                /* Various quirks the device can pull on us */
 442
 443        struct list_head inputs;                                        /* The list of inputs */
 444        void *hiddev;                                                   /* The hiddev structure */
 445        void *hidraw;
 446        int minor;                                                      /* Hiddev minor number */
 447
 448        int open;                                                       /* is the device open by anyone? */
 449        char name[128];                                                 /* Device name */
 450        char phys[64];                                                  /* Device physical location */
 451        char uniq[64];                                                  /* Device unique identifier (serial #) */
 452
 453        void *driver_data;
 454
 455        /* temporary hid_ff handling (until moved to the drivers) */
 456        int (*ff_init)(struct hid_device *);
 457
 458        /* hiddev event handler */
 459        int (*hiddev_connect)(struct hid_device *, unsigned int);
 460        void (*hiddev_hid_event) (struct hid_device *, struct hid_field *field,
 461                                  struct hid_usage *, __s32);
 462        void (*hiddev_report_event) (struct hid_device *, struct hid_report *);
 463
 464        /* handler for raw output data, used by hidraw */
 465        int (*hid_output_raw_report) (struct hid_device *, __u8 *, size_t);
 466};
 467
 468static inline void *hid_get_drvdata(struct hid_device *hdev)
 469{
 470        return dev_get_drvdata(&hdev->dev);
 471}
 472
 473static inline void hid_set_drvdata(struct hid_device *hdev, void *data)
 474{
 475        dev_set_drvdata(&hdev->dev, data);
 476}
 477
 478#define HID_GLOBAL_STACK_SIZE 4
 479#define HID_COLLECTION_STACK_SIZE 4
 480
 481struct hid_parser {
 482        struct hid_global     global;
 483        struct hid_global     global_stack[HID_GLOBAL_STACK_SIZE];
 484        unsigned              global_stack_ptr;
 485        struct hid_local      local;
 486        unsigned              collection_stack[HID_COLLECTION_STACK_SIZE];
 487        unsigned              collection_stack_ptr;
 488        struct hid_device    *device;
 489};
 490
 491struct hid_class_descriptor {
 492        __u8  bDescriptorType;
 493        __le16 wDescriptorLength;
 494} __attribute__ ((packed));
 495
 496struct hid_descriptor {
 497        __u8  bLength;
 498        __u8  bDescriptorType;
 499        __le16 bcdHID;
 500        __u8  bCountryCode;
 501        __u8  bNumDescriptors;
 502
 503        struct hid_class_descriptor desc[1];
 504} __attribute__ ((packed));
 505
 506#define HID_DEVICE(b, ven, prod) \
 507        .bus = (b), \
 508        .vendor = (ven), .product = (prod)
 509
 510#define HID_USB_DEVICE(ven, prod)       HID_DEVICE(BUS_USB, ven, prod)
 511#define HID_BLUETOOTH_DEVICE(ven, prod) HID_DEVICE(BUS_BLUETOOTH, ven, prod)
 512
 513#define HID_REPORT_ID(rep) \
 514        .report_type = (rep)
 515#define HID_USAGE_ID(uhid, utype, ucode) \
 516        .usage_hid = (uhid), .usage_type = (utype), .usage_code = (ucode)
 517/* we don't want to catch types and codes equal to 0 */
 518#define HID_TERMINATOR          (HID_ANY_ID - 1)
 519
 520struct hid_report_id {
 521        __u32 report_type;
 522};
 523struct hid_usage_id {
 524        __u32 usage_hid;
 525        __u32 usage_type;
 526        __u32 usage_code;
 527};
 528
 529/**
 530 * struct hid_driver
 531 * @name: driver name (e.g. "Footech_bar-wheel")
 532 * @id_table: which devices is this driver for (must be non-NULL for probe
 533 *            to be called)
 534 * @dyn_list: list of dynamically added device ids
 535 * @dyn_lock: lock protecting @dyn_list
 536 * @probe: new device inserted
 537 * @remove: device removed (NULL if not a hot-plug capable driver)
 538 * @report_table: on which reports to call raw_event (NULL means all)
 539 * @raw_event: if report in report_table, this hook is called (NULL means nop)
 540 * @usage_table: on which events to call event (NULL means all)
 541 * @event: if usage in usage_table, this hook is called (NULL means nop)
 542 * @report_fixup: called before report descriptor parsing (NULL means nop)
 543 * @input_mapping: invoked on input registering before mapping an usage
 544 * @input_mapped: invoked on input registering after mapping an usage
 545 *
 546 * raw_event and event should return 0 on no action performed, 1 when no
 547 * further processing should be done and negative on error
 548 *
 549 * input_mapping shall return a negative value to completely ignore this usage
 550 * (e.g. doubled or invalid usage), zero to continue with parsing of this
 551 * usage by generic code (no special handling needed) or positive to skip
 552 * generic parsing (needed special handling which was done in the hook already)
 553 * input_mapped shall return negative to inform the layer that this usage
 554 * should not be considered for further processing or zero to notify that
 555 * no processing was performed and should be done in a generic manner
 556 * Both these functions may be NULL which means the same behavior as returning
 557 * zero from them.
 558 */
 559struct hid_driver {
 560        char *name;
 561        const struct hid_device_id *id_table;
 562
 563        struct list_head dyn_list;
 564        spinlock_t dyn_lock;
 565
 566        int (*probe)(struct hid_device *dev, const struct hid_device_id *id);
 567        void (*remove)(struct hid_device *dev);
 568
 569        const struct hid_report_id *report_table;
 570        int (*raw_event)(struct hid_device *hdev, struct hid_report *report,
 571                        u8 *data, int size);
 572        const struct hid_usage_id *usage_table;
 573        int (*event)(struct hid_device *hdev, struct hid_field *field,
 574                        struct hid_usage *usage, __s32 value);
 575
 576        void (*report_fixup)(struct hid_device *hdev, __u8 *buf,
 577                        unsigned int size);
 578
 579        int (*input_mapping)(struct hid_device *hdev,
 580                        struct hid_input *hidinput, struct hid_field *field,
 581                        struct hid_usage *usage, unsigned long **bit, int *max);
 582        int (*input_mapped)(struct hid_device *hdev,
 583                        struct hid_input *hidinput, struct hid_field *field,
 584                        struct hid_usage *usage, unsigned long **bit, int *max);
 585/* private: */
 586        struct device_driver driver;
 587};
 588
 589/**
 590 * hid_ll_driver - low level driver callbacks
 591 * @start: called on probe to start the device
 592 * @stop: called on remove
 593 * @open: called by input layer on open
 594 * @close: called by input layer on close
 595 * @hidinput_input_event: event input event (e.g. ff or leds)
 596 * @parse: this method is called only once to parse the device data,
 597 *         shouldn't allocate anything to not leak memory
 598 */
 599struct hid_ll_driver {
 600        int (*start)(struct hid_device *hdev);
 601        void (*stop)(struct hid_device *hdev);
 602
 603        int (*open)(struct hid_device *hdev);
 604        void (*close)(struct hid_device *hdev);
 605
 606        int (*hidinput_input_event) (struct input_dev *idev, unsigned int type,
 607                        unsigned int code, int value);
 608
 609        int (*parse)(struct hid_device *hdev);
 610};
 611
 612/* Applications from HID Usage Tables 4/8/99 Version 1.1 */
 613/* We ignore a few input applications that are not widely used */
 614#define IS_INPUT_APPLICATION(a) (((a >= 0x00010000) && (a <= 0x00010008)) || (a == 0x00010080) || (a == 0x000c0001) || (a == 0x000d0002))
 615
 616/* HID core API */
 617
 618#ifdef CONFIG_HID_DEBUG
 619extern int hid_debug;
 620#endif
 621
 622extern int hid_add_device(struct hid_device *);
 623extern void hid_destroy_device(struct hid_device *);
 624
 625extern int __must_check __hid_register_driver(struct hid_driver *,
 626                struct module *, const char *mod_name);
 627static inline int __must_check hid_register_driver(struct hid_driver *driver)
 628{
 629        return __hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME);
 630}
 631extern void hid_unregister_driver(struct hid_driver *);
 632
 633extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32);
 634extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report);
 635extern int hidinput_connect(struct hid_device *hid, unsigned int force);
 636extern void hidinput_disconnect(struct hid_device *);
 637
 638int hid_set_field(struct hid_field *, unsigned, __s32);
 639int hid_input_report(struct hid_device *, int type, u8 *, int, int);
 640int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field);
 641void hid_output_report(struct hid_report *report, __u8 *data);
 642struct hid_device *hid_allocate_device(void);
 643int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size);
 644int hid_connect(struct hid_device *hid, unsigned int connect_mask);
 645
 646/**
 647 * hid_map_usage - map usage input bits
 648 *
 649 * @hidinput: hidinput which we are interested in
 650 * @usage: usage to fill in
 651 * @bit: pointer to input->{}bit (out parameter)
 652 * @max: maximal valid usage->code to consider later (out parameter)
 653 * @type: input event type (EV_KEY, EV_REL, ...)
 654 * @c: code which corresponds to this usage and type
 655 */
 656static inline void hid_map_usage(struct hid_input *hidinput,
 657                struct hid_usage *usage, unsigned long **bit, int *max,
 658                __u8 type, __u16 c)
 659{
 660        struct input_dev *input = hidinput->input;
 661
 662        usage->type = type;
 663        usage->code = c;
 664
 665        switch (type) {
 666        case EV_ABS:
 667                *bit = input->absbit;
 668                *max = ABS_MAX;
 669                break;
 670        case EV_REL:
 671                *bit = input->relbit;
 672                *max = REL_MAX;
 673                break;
 674        case EV_KEY:
 675                *bit = input->keybit;
 676                *max = KEY_MAX;
 677                break;
 678        case EV_LED:
 679                *bit = input->ledbit;
 680                *max = LED_MAX;
 681                break;
 682        }
 683}
 684
 685/**
 686 * hid_map_usage_clear - map usage input bits and clear the input bit
 687 *
 688 * The same as hid_map_usage, except the @c bit is also cleared in supported
 689 * bits (@bit).
 690 */
 691static inline void hid_map_usage_clear(struct hid_input *hidinput,
 692                struct hid_usage *usage, unsigned long **bit, int *max,
 693                __u8 type, __u16 c)
 694{
 695        hid_map_usage(hidinput, usage, bit, max, type, c);
 696        clear_bit(c, *bit);
 697}
 698
 699/**
 700 * hid_parse - parse HW reports
 701 *
 702 * @hdev: hid device
 703 *
 704 * Call this from probe after you set up the device (if needed). Your
 705 * report_fixup will be called (if non-NULL) after reading raw report from
 706 * device before passing it to hid layer for real parsing.
 707 */
 708static inline int __must_check hid_parse(struct hid_device *hdev)
 709{
 710        int ret;
 711
 712        if (hdev->status & HID_STAT_PARSED)
 713                return 0;
 714
 715        ret = hdev->ll_driver->parse(hdev);
 716        if (!ret)
 717                hdev->status |= HID_STAT_PARSED;
 718
 719        return ret;
 720}
 721
 722/**
 723 * hid_hw_start - start underlaying HW
 724 *
 725 * @hdev: hid device
 726 * @connect_mask: which outputs to connect, see HID_CONNECT_*
 727 *
 728 * Call this in probe function *after* hid_parse. This will setup HW buffers
 729 * and start the device (if not deffered to device open). hid_hw_stop must be
 730 * called if this was successfull.
 731 */
 732static inline int __must_check hid_hw_start(struct hid_device *hdev,
 733                unsigned int connect_mask)
 734{
 735        int ret = hdev->ll_driver->start(hdev);
 736        if (ret || !connect_mask)
 737                return ret;
 738        ret = hid_connect(hdev, connect_mask);
 739        if (ret)
 740                hdev->ll_driver->stop(hdev);
 741        return ret;
 742}
 743
 744/**
 745 * hid_hw_stop - stop underlaying HW
 746 *
 747 * @hdev: hid device
 748 *
 749 * This is usually called from remove function or from probe when something
 750 * failed and hid_hw_start was called already.
 751 */
 752static inline void hid_hw_stop(struct hid_device *hdev)
 753{
 754        hdev->ll_driver->stop(hdev);
 755}
 756
 757void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
 758                int interrupt);
 759
 760extern int hid_generic_init(void);
 761extern void hid_generic_exit(void);
 762
 763/* HID quirks API */
 764u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct);
 765int usbhid_quirks_init(char **quirks_param);
 766void usbhid_quirks_exit(void);
 767void usbhid_set_leds(struct hid_device *hid);
 768
 769#ifdef CONFIG_HID_PID
 770int hid_pidff_init(struct hid_device *hid);
 771#else
 772#define hid_pidff_init NULL
 773#endif
 774
 775#ifdef CONFIG_HID_DEBUG
 776#define dbg_hid(format, arg...) if (hid_debug) \
 777                                printk(KERN_DEBUG "%s: " format ,\
 778                                __FILE__ , ## arg)
 779#define dbg_hid_line(format, arg...) if (hid_debug) \
 780                                printk(format, ## arg)
 781#else
 782static inline int __attribute__((format(printf, 1, 2)))
 783dbg_hid(const char *fmt, ...)
 784{
 785        return 0;
 786}
 787#define dbg_hid_line dbg_hid
 788#endif /* HID_DEBUG */
 789
 790#define err_hid(format, arg...) printk(KERN_ERR "%s: " format "\n" , \
 791                __FILE__ , ## arg)
 792#endif /* HID_FF */
 793
 794#ifdef __KERNEL__
 795#ifdef CONFIG_HID_COMPAT
 796#define HID_COMPAT_LOAD_DRIVER(name)    \
 797/* prototype to avoid sparse warning */ \
 798extern void hid_compat_##name(void);    \
 799void hid_compat_##name(void) { }        \
 800EXPORT_SYMBOL(hid_compat_##name)
 801#else
 802#define HID_COMPAT_LOAD_DRIVER(name)
 803#endif /* HID_COMPAT */
 804#define HID_COMPAT_CALL_DRIVER(name)    do {    \
 805        extern void hid_compat_##name(void);    \
 806        hid_compat_##name();                    \
 807} while (0)
 808#endif /* __KERNEL__ */
 809
 810#endif
 811
 812