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   1 #ifndef __HID_H
   2 #define __HID_H
   3
   4 /*
   5  * $Id: hid.h,v 1.24 2001/12/27 10:37:41 vojtech Exp $
   6  *
   7  *  Copyright (c) 1999 Andreas Gal
   8  *  Copyright (c) 2000-2001 Vojtech Pavlik
   9  *  Copyright (c) 2006-2007 Jiri Kosina
  10  */
  11
  12 /*
  13  * This program is free software; you can redistribute it and/or modify
  14  * it under the terms of the GNU General Public License as published by
  15  * the Free Software Foundation; either version 2 of the License, or
  16  * (at your option) any later version.
  17  *
  18  * This program is distributed in the hope that it will be useful,
  19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  21  * GNU General Public License for more details.
  22  *
  23  * You should have received a copy of the GNU General Public License
  24  * along with this program; if not, write to the Free Software
  25  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  26  *
  27  * Should you need to contact me, the author, you can do so either by
  28  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  29  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  30  */
  31
  32 /*
  33  * USB HID (Human Interface Device) interface class code
  34  */
  35
  36 #define USB_INTERFACE_CLASS_HID         3
  37
  38 /*
  39  * USB HID interface subclass and protocol codes
  40  */
  41
  42 #define USB_INTERFACE_SUBCLASS_BOOT     1
  43 #define USB_INTERFACE_PROTOCOL_KEYBOARD 1
  44 #define USB_INTERFACE_PROTOCOL_MOUSE    2
  45
  46 /*
  47  * HID class requests
  48  */
  49
  50 #define HID_REQ_GET_REPORT              0x01
  51 #define HID_REQ_GET_IDLE                0x02
  52 #define HID_REQ_GET_PROTOCOL            0x03
  53 #define HID_REQ_SET_REPORT              0x09
  54 #define HID_REQ_SET_IDLE                0x0A
  55 #define HID_REQ_SET_PROTOCOL            0x0B
  56
  57 /*
  58  * HID class descriptor types
  59  */
  60
  61 #define HID_DT_HID                      (USB_TYPE_CLASS | 0x01)
  62 #define HID_DT_REPORT                   (USB_TYPE_CLASS | 0x02)
  63 #define HID_DT_PHYSICAL                 (USB_TYPE_CLASS | 0x03)
  64
  65 #define HID_MAX_DESCRIPTOR_SIZE         4096
  66
  67 #ifdef __KERNEL__
  68
  69 #include <linux/types.h>
  70 #include <linux/slab.h>
  71 #include <linux/list.h>
  72 #include <linux/timer.h>
  73 #include <linux/workqueue.h>
  74 #include <linux/input.h>
  75
  76 /*
  77  * We parse each description item into this structure. Short items data
  78  * values are expanded to 32-bit signed int, long items contain a pointer
  79  * into the data area.
  80  */
  81
  82 struct hid_item {
  83         unsigned  format;
  84         __u8      size;
  85         __u8      type;
  86         __u8      tag;
  87         union {
  88             __u8   u8;
  89             __s8   s8;
  90             __u16  u16;
  91             __s16  s16;
  92             __u32  u32;
  93             __s32  s32;
  94             __u8  *longdata;
  95         } data;
  96 };
  97
  98 /*
  99  * HID report item format
 100  */
 101
 102 #define HID_ITEM_FORMAT_SHORT   0
 103 #define HID_ITEM_FORMAT_LONG    1
 104
 105 /*
 106  * Special tag indicating long items
 107  */
 108
 109 #define HID_ITEM_TAG_LONG       15
 110
 111 /*
 112  * HID report descriptor item type (prefix bit 2,3)
 113  */
 114
 115 #define HID_ITEM_TYPE_MAIN              0
 116 #define HID_ITEM_TYPE_GLOBAL            1
 117 #define HID_ITEM_TYPE_LOCAL             2
 118 #define HID_ITEM_TYPE_RESERVED          3
 119
 120 /*
 121  * HID report descriptor main item tags
 122  */
 123
 124 #define HID_MAIN_ITEM_TAG_INPUT                 8
 125 #define HID_MAIN_ITEM_TAG_OUTPUT                9
 126 #define HID_MAIN_ITEM_TAG_FEATURE               11
 127 #define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION      10
 128 #define HID_MAIN_ITEM_TAG_END_COLLECTION        12
 129
 130 /*
 131  * HID report descriptor main item contents
 132  */
 133
 134 #define HID_MAIN_ITEM_CONSTANT          0x001
 135 #define HID_MAIN_ITEM_VARIABLE          0x002
 136 #define HID_MAIN_ITEM_RELATIVE          0x004
 137 #define HID_MAIN_ITEM_WRAP              0x008
 138 #define HID_MAIN_ITEM_NONLINEAR         0x010
 139 #define HID_MAIN_ITEM_NO_PREFERRED      0x020
 140 #define HID_MAIN_ITEM_NULL_STATE        0x040
 141 #define HID_MAIN_ITEM_VOLATILE          0x080
 142 #define HID_MAIN_ITEM_BUFFERED_BYTE     0x100
 143
 144 /*
 145  * HID report descriptor collection item types
 146  */
 147
 148 #define HID_COLLECTION_PHYSICAL         0
 149 #define HID_COLLECTION_APPLICATION      1
 150 #define HID_COLLECTION_LOGICAL          2
 151
 152 /*
 153  * HID report descriptor global item tags
 154  */
 155
 156 #define HID_GLOBAL_ITEM_TAG_USAGE_PAGE          0
 157 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM     1
 158 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM     2
 159 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM    3
 160 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM    4
 161 #define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT       5
 162 #define HID_GLOBAL_ITEM_TAG_UNIT                6
 163 #define HID_GLOBAL_ITEM_TAG_REPORT_SIZE         7
 164 #define HID_GLOBAL_ITEM_TAG_REPORT_ID           8
 165 #define HID_GLOBAL_ITEM_TAG_REPORT_COUNT        9
 166 #define HID_GLOBAL_ITEM_TAG_PUSH                10
 167 #define HID_GLOBAL_ITEM_TAG_POP                 11
 168
 169 /*
 170  * HID report descriptor local item tags
 171  */
 172
 173 #define HID_LOCAL_ITEM_TAG_USAGE                0
 174 #define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM        1
 175 #define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM        2
 176 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX     3
 177 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM   4
 178 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM   5
 179 #define HID_LOCAL_ITEM_TAG_STRING_INDEX         7
 180 #define HID_LOCAL_ITEM_TAG_STRING_MINIMUM       8
 181 #define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM       9
 182 #define HID_LOCAL_ITEM_TAG_DELIMITER            10
 183
 184 /*
 185  * HID usage tables
 186  */
 187
 188 #define HID_USAGE_PAGE          0xffff0000
 189
 190 #define HID_UP_UNDEFINED        0x00000000
 191 #define HID_UP_GENDESK          0x00010000
 192 #define HID_UP_SIMULATION       0x00020000
 193 #define HID_UP_KEYBOARD         0x00070000
 194 #define HID_UP_LED              0x00080000
 195 #define HID_UP_BUTTON           0x00090000
 196 #define HID_UP_ORDINAL          0x000a0000
 197 #define HID_UP_CONSUMER         0x000c0000
 198 #define HID_UP_DIGITIZER        0x000d0000
 199 #define HID_UP_PID              0x000f0000
 200 #define HID_UP_HPVENDOR         0xff7f0000
 201 #define HID_UP_MSVENDOR         0xff000000
 202 #define HID_UP_CUSTOM           0x00ff0000
 203 #define HID_UP_LOGIVENDOR       0xffbc0000
 204
 205 #define HID_USAGE               0x0000ffff
 206
 207 #define HID_GD_POINTER          0x00010001
 208 #define HID_GD_MOUSE            0x00010002
 209 #define HID_GD_JOYSTICK         0x00010004
 210 #define HID_GD_GAMEPAD          0x00010005
 211 #define HID_GD_KEYBOARD         0x00010006
 212 #define HID_GD_KEYPAD           0x00010007
 213 #define HID_GD_MULTIAXIS        0x00010008
 214 #define HID_GD_X                0x00010030
 215 #define HID_GD_Y                0x00010031
 216 #define HID_GD_Z                0x00010032
 217 #define HID_GD_RX               0x00010033
 218 #define HID_GD_RY               0x00010034
 219 #define HID_GD_RZ               0x00010035
 220 #define HID_GD_SLIDER           0x00010036
 221 #define HID_GD_DIAL             0x00010037
 222 #define HID_GD_WHEEL            0x00010038
 223 #define HID_GD_HATSWITCH        0x00010039
 224 #define HID_GD_BUFFER           0x0001003a
 225 #define HID_GD_BYTECOUNT        0x0001003b
 226 #define HID_GD_MOTION           0x0001003c
 227 #define HID_GD_START            0x0001003d
 228 #define HID_GD_SELECT           0x0001003e
 229 #define HID_GD_VX               0x00010040
 230 #define HID_GD_VY               0x00010041
 231 #define HID_GD_VZ               0x00010042
 232 #define HID_GD_VBRX             0x00010043
 233 #define HID_GD_VBRY             0x00010044
 234 #define HID_GD_VBRZ             0x00010045
 235 #define HID_GD_VNO              0x00010046
 236 #define HID_GD_FEATURE          0x00010047
 237 #define HID_GD_UP               0x00010090
 238 #define HID_GD_DOWN             0x00010091
 239 #define HID_GD_RIGHT            0x00010092
 240 #define HID_GD_LEFT             0x00010093
 241
 242 /*
 243  * HID report types --- Ouch! HID spec says 1 2 3!
 244  */
 245
 246 #define HID_INPUT_REPORT        0
 247 #define HID_OUTPUT_REPORT       1
 248 #define HID_FEATURE_REPORT      2
 249
 250 /*
 251  * HID device quirks.
 252  */
 253
 254 /*
 255  * Increase this if you need to configure more HID quirks at module load time
 256  */
 257 #define MAX_USBHID_BOOT_QUIRKS 4
 258
 259 #define HID_QUIRK_INVERT                        0x00000001
 260 #define HID_QUIRK_NOTOUCH                       0x00000002
 261 #define HID_QUIRK_IGNORE                        0x00000004
 262 #define HID_QUIRK_NOGET                         0x00000008
 263 #define HID_QUIRK_HIDDEV                        0x00000010
 264 #define HID_QUIRK_BADPAD                        0x00000020
 265 #define HID_QUIRK_MULTI_INPUT                   0x00000040
 266 #define HID_QUIRK_2WHEEL_MOUSE_HACK_7           0x00000080
 267 #define HID_QUIRK_2WHEEL_MOUSE_HACK_5           0x00000100
 268 #define HID_QUIRK_2WHEEL_MOUSE_HACK_ON          0x00000200
 269 #define HID_QUIRK_MIGHTYMOUSE                   0x00000400
 270 #define HID_QUIRK_APPLE_HAS_FN                  0x00000800
 271 #define HID_QUIRK_APPLE_FN_ON                   0x00001000
 272 #define HID_QUIRK_INVERT_HWHEEL                 0x00002000
 273 #define HID_QUIRK_APPLE_ISO_KEYBOARD            0x00004000
 274 #define HID_QUIRK_BAD_RELATIVE_KEYS             0x00008000
 275 #define HID_QUIRK_SKIP_OUTPUT_REPORTS           0x00010000
 276 #define HID_QUIRK_IGNORE_MOUSE                  0x00020000
 277 #define HID_QUIRK_SONY_PS3_CONTROLLER           0x00040000
 278 #define HID_QUIRK_DUPLICATE_USAGES              0x00080000
 279 #define HID_QUIRK_RESET_LEDS                    0x00100000
 280 #define HID_QUIRK_HIDINPUT                      0x00200000
 281 #define HID_QUIRK_LOGITECH_IGNORE_DOUBLED_WHEEL 0x00400000
 282 #define HID_QUIRK_LOGITECH_EXPANDED_KEYMAP      0x00800000
 283 #define HID_QUIRK_IGNORE_HIDINPUT               0x01000000
 284 #define HID_QUIRK_2WHEEL_MOUSE_HACK_B8          0x02000000
 285
 286 /*
 287  * Separate quirks for runtime report descriptor fixup
 288  */
 289
 290 #define HID_QUIRK_RDESC_CYMOTION                0x00000001
 291 #define HID_QUIRK_RDESC_LOGITECH                0x00000002
 292 #define HID_QUIRK_RDESC_SWAPPED_MIN_MAX         0x00000004
 293 #define HID_QUIRK_RDESC_PETALYNX                0x00000008
 294 #define HID_QUIRK_RDESC_MACBOOK_JIS             0x00000010
 295 #define HID_QUIRK_RDESC_BUTTON_CONSUMER         0x00000020
 296
 297 /*
 298  * This is the global environment of the parser. This information is
 299  * persistent for main-items. The global environment can be saved and
 300  * restored with PUSH/POP statements.
 301  */
 302
 303 struct hid_global {
 304         unsigned usage_page;
 305         __s32    logical_minimum;
 306         __s32    logical_maximum;
 307         __s32    physical_minimum;
 308         __s32    physical_maximum;
 309         __s32    unit_exponent;
 310         unsigned unit;
 311         unsigned report_id;
 312         unsigned report_size;
 313         unsigned report_count;
 314 };
 315
 316 /*
 317  * This is the local environment. It is persistent up the next main-item.
 318  */
 319
 320 #define HID_MAX_USAGES                  8192
 321 #define HID_DEFAULT_NUM_COLLECTIONS     16
 322
 323 struct hid_local {
 324         unsigned usage[HID_MAX_USAGES]; /* usage array */
 325         unsigned collection_index[HID_MAX_USAGES]; /* collection index array */
 326         unsigned usage_index;
 327         unsigned usage_minimum;
 328         unsigned delimiter_depth;
 329         unsigned delimiter_branch;
 330 };
 331
 332 /*
 333  * This is the collection stack. We climb up the stack to determine
 334  * application and function of each field.
 335  */
 336
 337 struct hid_collection {
 338         unsigned type;
 339         unsigned usage;
 340         unsigned level;
 341 };
 342
 343 struct hid_usage {
 344         unsigned  hid;                  /* hid usage code */
 345         unsigned  collection_index;     /* index into collection array */
 346         /* hidinput data */
 347         __u16     code;                 /* input driver code */
 348         __u8      type;                 /* input driver type */
 349         __s8      hat_min;              /* hat switch fun */
 350         __s8      hat_max;              /* ditto */
 351         __s8      hat_dir;              /* ditto */
 352 };
 353
 354 struct hid_input;
 355
 356 struct hid_field {
 357         unsigned  physical;             /* physical usage for this field */
 358         unsigned  logical;              /* logical usage for this field */
 359         unsigned  application;          /* application usage for this field */
 360         struct hid_usage *usage;        /* usage table for this function */
 361         unsigned  maxusage;             /* maximum usage index */
 362         unsigned  flags;                /* main-item flags (i.e. volatile,array,constant) */
 363         unsigned  report_offset;        /* bit offset in the report */
 364         unsigned  report_size;          /* size of this field in the report */
 365         unsigned  report_count;         /* number of this field in the report */
 366         unsigned  report_type;          /* (input,output,feature) */
 367         __s32    *value;                /* last known value(s) */
 368         __s32     logical_minimum;
 369         __s32     logical_maximum;
 370         __s32     physical_minimum;
 371         __s32     physical_maximum;
 372         __s32     unit_exponent;
 373         unsigned  unit;
 374         struct hid_report *report;      /* associated report */
 375         unsigned index;                 /* index into report->field[] */
 376         /* hidinput data */
 377         struct hid_input *hidinput;     /* associated input structure */
 378         __u16 dpad;                     /* dpad input code */
 379 };
 380
 381 #define HID_MAX_FIELDS 64
 382
 383 struct hid_report {
 384         struct list_head list;
 385         unsigned id;                                    /* id of this report */
 386         unsigned type;                                  /* report type */
 387         struct hid_field *field[HID_MAX_FIELDS];        /* fields of the report */
 388         unsigned maxfield;                              /* maximum valid field index */
 389         unsigned size;                                  /* size of the report (bits) */
 390         struct hid_device *device;                      /* associated device */
 391 };
 392
 393 struct hid_report_enum {
 394         unsigned numbered;
 395         struct list_head report_list;
 396         struct hid_report *report_id_hash[256];
 397 };
 398
 399 #define HID_REPORT_TYPES 3
 400
 401 #define HID_MIN_BUFFER_SIZE     64              /* make sure there is at least a packet size of space */
 402 #define HID_MAX_BUFFER_SIZE     4096            /* 4kb */
 403 #define HID_CONTROL_FIFO_SIZE   256             /* to init devices with >100 reports */
 404 #define HID_OUTPUT_FIFO_SIZE    64
 405
 406 struct hid_control_fifo {
 407         unsigned char dir;
 408         struct hid_report *report;
 409 };
 410
 411 #define HID_CLAIMED_INPUT       1
 412 #define HID_CLAIMED_HIDDEV      2
 413 #define HID_CLAIMED_HIDRAW      4
 414
 415 #define HID_CTRL_RUNNING        1
 416 #define HID_OUT_RUNNING         2
 417 #define HID_IN_RUNNING          3
 418 #define HID_RESET_PENDING       4
 419 #define HID_SUSPENDED           5
 420 #define HID_CLEAR_HALT          6
 421
 422 struct hid_input {
 423         struct list_head list;
 424         struct hid_report *report;
 425         struct input_dev *input;
 426 };
 427
 428 struct hid_device {                                                     /* device report descriptor */
 429          __u8 *rdesc;
 430         unsigned rsize;
 431         struct hid_collection *collection;                              /* List of HID collections */
 432         unsigned collection_size;                                       /* Number of allocated hid_collections */
 433         unsigned maxcollection;                                         /* Number of parsed collections */
 434         unsigned maxapplication;                                        /* Number of applications */
 435         unsigned short bus;                                             /* BUS ID */
 436         unsigned short vendor;                                          /* Vendor ID */
 437         unsigned short product;                                         /* Product ID */
 438         unsigned version;                                               /* HID version */
 439         unsigned country;                                               /* HID country */
 440         struct hid_report_enum report_enum[HID_REPORT_TYPES];
 441
 442         struct device *dev;                                             /* device */
 443
 444         unsigned claimed;                                               /* Claimed by hidinput, hiddev? */
 445         unsigned quirks;                                                /* Various quirks the device can pull on us */
 446
 447         struct list_head inputs;                                        /* The list of inputs */
 448         void *hiddev;                                                   /* The hiddev structure */
 449         void *hidraw;
 450         int minor;                                                      /* Hiddev minor number */
 451
 452         wait_queue_head_t wait;                                         /* For sleeping */
 453
 454         int open;                                                       /* is the device open by anyone? */
 455         char name[128];                                                 /* Device name */
 456         char phys[64];                                                  /* Device physical location */
 457         char uniq[64];                                                  /* Device unique identifier (serial #) */
 458
 459         void *driver_data;
 460
 461         __s32 delayed_value;                                            /* For A4 Tech mice hwheel quirk */
 462
 463         /* device-specific function pointers */
 464         int (*hidinput_input_event) (struct input_dev *, unsigned int, unsigned int, int);
 465         int (*hid_open) (struct hid_device *);
 466         void (*hid_close) (struct hid_device *);
 467
 468         /* hiddev event handler */
 469         void (*hiddev_hid_event) (struct hid_device *, struct hid_field *field,
 470                                   struct hid_usage *, __s32);
 471         void (*hiddev_report_event) (struct hid_device *, struct hid_report *);
 472
 473         /* handler for raw output data, used by hidraw */
 474         int (*hid_output_raw_report) (struct hid_device *, __u8 *, size_t);
 475 #ifdef CONFIG_USB_HIDINPUT_POWERBOOK
 476         unsigned long apple_pressed_fn[BITS_TO_LONGS(KEY_CNT)];
 477         unsigned long pb_pressed_numlock[BITS_TO_LONGS(KEY_CNT)];
 478 #endif
 479 };
 480
 481 #define HID_GLOBAL_STACK_SIZE 4
 482 #define HID_COLLECTION_STACK_SIZE 4
 483
 484 struct hid_parser {
 485         struct hid_global     global;
 486         struct hid_global     global_stack[HID_GLOBAL_STACK_SIZE];
 487         unsigned              global_stack_ptr;
 488         struct hid_local      local;
 489         unsigned              collection_stack[HID_COLLECTION_STACK_SIZE];
 490         unsigned              collection_stack_ptr;
 491         struct hid_device    *device;
 492 };
 493
 494 struct hid_class_descriptor {
 495         __u8  bDescriptorType;
 496         __u16 wDescriptorLength;
 497 } __attribute__ ((packed));
 498
 499 struct hid_descriptor {
 500         __u8  bLength;
 501         __u8  bDescriptorType;
 502         __u16 bcdHID;
 503         __u8  bCountryCode;
 504         __u8  bNumDescriptors;
 505
 506         struct hid_class_descriptor desc[1];
 507 } __attribute__ ((packed));
 508
 509 /* Applications from HID Usage Tables 4/8/99 Version 1.1 */
 510 /* We ignore a few input applications that are not widely used */
 511 #define IS_INPUT_APPLICATION(a) (((a >= 0x00010000) && (a <= 0x00010008)) || (a == 0x00010080) || (a == 0x000c0001))
 512
 513 /* HID core API */
 514
 515 #ifdef CONFIG_HID_DEBUG
 516 extern int hid_debug;
 517 #endif
 518
 519 extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32);
 520 extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report);
 521 extern int hidinput_connect(struct hid_device *);
 522 extern void hidinput_disconnect(struct hid_device *);
 523
 524 int hid_set_field(struct hid_field *, unsigned, __s32);
 525 int hid_input_report(struct hid_device *, int type, u8 *, int, int);
 526 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field);
 527 int hidinput_mapping_quirks(struct hid_usage *, struct input_dev *, unsigned long *, int *);
 528 void hidinput_event_quirks(struct hid_device *, struct hid_field *, struct hid_usage *, __s32);
 529 int hidinput_apple_event(struct hid_device *, struct input_dev *, struct hid_usage *, __s32);
 530 void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, int interrupt);
 531 void hid_output_report(struct hid_report *report, __u8 *data);
 532 void hid_free_device(struct hid_device *device);
 533 struct hid_device *hid_parse_report(__u8 *start, unsigned size);
 534
 535 /* HID quirks API */
 536 u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct);
 537 int usbhid_modify_dquirk(const u16 idVendor, const u16 idProduct, const u32 quirks);
 538 int usbhid_quirks_init(char **quirks_param);
 539 void usbhid_quirks_exit(void);
 540 void usbhid_fixup_report_descriptor(const u16, const u16, char *, unsigned, char **);
 541
 542 #ifdef CONFIG_HID_FF
 543 int hid_ff_init(struct hid_device *hid);
 544
 545 int hid_lgff_init(struct hid_device *hid);
 546 int hid_plff_init(struct hid_device *hid);
 547 int hid_tmff_init(struct hid_device *hid);
 548 int hid_zpff_init(struct hid_device *hid);
 549 #ifdef CONFIG_HID_PID
 550 int hid_pidff_init(struct hid_device *hid);
 551 #else
 552 static inline int hid_pidff_init(struct hid_device *hid) { return -ENODEV; }
 553 #endif
 554
 555 #else
 556 static inline int hid_ff_init(struct hid_device *hid) { return -1; }
 557 #endif
 558
 559 #ifdef CONFIG_HID_DEBUG
 560 #define dbg_hid(format, arg...) if (hid_debug) \
 561                                 printk(KERN_DEBUG "%s: " format ,\
 562                                 __FILE__ , ## arg)
 563 #define dbg_hid_line(format, arg...) if (hid_debug) \
 564                                 printk(format, ## arg)
 565 #else
 566 #define dbg_hid(format, arg...) do {} while (0)
 567 #define dbg_hid_line dbg_hid
 568 #endif
 569
 570 #define err_hid(format, arg...) printk(KERN_ERR "%s: " format "\n" , \
 571                 __FILE__ , ## arg)
 572 #endif
 573 #endif
 574