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 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 <[email protected]>, or by paper mail: 29 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic 30 */ 31 32 #include <linux/types.h> 33 #include <linux/slab.h> 34 #include <linux/list.h> 35 #include <linux/timer.h> 36 #include <linux/workqueue.h> 37 #include <linux/input.h> 38 39 /* 40 * USB HID (Human Interface Device) interface class code 41 */ 42 43 #define USB_INTERFACE_CLASS_HID 3 44 45 /* 46 * USB HID interface subclass and protocol codes 47 */ 48 49 #define USB_INTERFACE_SUBCLASS_BOOT 1 50 #define USB_INTERFACE_PROTOCOL_KEYBOARD 1 51 #define USB_INTERFACE_PROTOCOL_MOUSE 2 52 53 /* 54 * HID class requests 55 */ 56 57 #define HID_REQ_GET_REPORT 0x01 58 #define HID_REQ_GET_IDLE 0x02 59 #define HID_REQ_GET_PROTOCOL 0x03 60 #define HID_REQ_SET_REPORT 0x09 61 #define HID_REQ_SET_IDLE 0x0A 62 #define HID_REQ_SET_PROTOCOL 0x0B 63 64 /* 65 * HID class descriptor types 66 */ 67 68 #define HID_DT_HID (USB_TYPE_CLASS | 0x01) 69 #define HID_DT_REPORT (USB_TYPE_CLASS | 0x02) 70 #define HID_DT_PHYSICAL (USB_TYPE_CLASS | 0x03) 71 72 /* 73 * We parse each description item into this structure. Short items data 74 * values are expanded to 32-bit signed int, long items contain a pointer 75 * into the data area. 76 */ 77 78 struct hid_item { 79 unsigned format; 80 __u8 size; 81 __u8 type; 82 __u8 tag; 83 union { 84 __u8 u8; 85 __s8 s8; 86 __u16 u16; 87 __s16 s16; 88 __u32 u32; 89 __s32 s32; 90 __u8 *longdata; 91 } data; 92 }; 93 94 /* 95 * HID report item format 96 */ 97 98 #define HID_ITEM_FORMAT_SHORT 0 99 #define HID_ITEM_FORMAT_LONG 1 100 101 /* 102 * Special tag indicating long items 103 */ 104 105 #define HID_ITEM_TAG_LONG 15 106 107 /* 108 * HID report descriptor item type (prefix bit 2,3) 109 */ 110 111 #define HID_ITEM_TYPE_MAIN 0 112 #define HID_ITEM_TYPE_GLOBAL 1 113 #define HID_ITEM_TYPE_LOCAL 2 114 #define HID_ITEM_TYPE_RESERVED 3 115 116 /* 117 * HID report descriptor main item tags 118 */ 119 120 #define HID_MAIN_ITEM_TAG_INPUT 8 121 #define HID_MAIN_ITEM_TAG_OUTPUT 9 122 #define HID_MAIN_ITEM_TAG_FEATURE 11 123 #define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION 10 124 #define HID_MAIN_ITEM_TAG_END_COLLECTION 12 125 126 /* 127 * HID report descriptor main item contents 128 */ 129 130 #define HID_MAIN_ITEM_CONSTANT 0x001 131 #define HID_MAIN_ITEM_VARIABLE 0x002 132 #define HID_MAIN_ITEM_RELATIVE 0x004 133 #define HID_MAIN_ITEM_WRAP 0x008 134 #define HID_MAIN_ITEM_NONLINEAR 0x010 135 #define HID_MAIN_ITEM_NO_PREFERRED 0x020 136 #define HID_MAIN_ITEM_NULL_STATE 0x040 137 #define HID_MAIN_ITEM_VOLATILE 0x080 138 #define HID_MAIN_ITEM_BUFFERED_BYTE 0x100 139 140 /* 141 * HID report descriptor collection item types 142 */ 143 144 #define HID_COLLECTION_PHYSICAL 0 145 #define HID_COLLECTION_APPLICATION 1 146 #define HID_COLLECTION_LOGICAL 2 147 148 /* 149 * HID report descriptor global item tags 150 */ 151 152 #define HID_GLOBAL_ITEM_TAG_USAGE_PAGE 0 153 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM 1 154 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM 2 155 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM 3 156 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM 4 157 #define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT 5 158 #define HID_GLOBAL_ITEM_TAG_UNIT 6 159 #define HID_GLOBAL_ITEM_TAG_REPORT_SIZE 7 160 #define HID_GLOBAL_ITEM_TAG_REPORT_ID 8 161 #define HID_GLOBAL_ITEM_TAG_REPORT_COUNT 9 162 #define HID_GLOBAL_ITEM_TAG_PUSH 10 163 #define HID_GLOBAL_ITEM_TAG_POP 11 164 165 /* 166 * HID report descriptor local item tags 167 */ 168 169 #define HID_LOCAL_ITEM_TAG_USAGE 0 170 #define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM 1 171 #define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM 2 172 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX 3 173 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM 4 174 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM 5 175 #define HID_LOCAL_ITEM_TAG_STRING_INDEX 7 176 #define HID_LOCAL_ITEM_TAG_STRING_MINIMUM 8 177 #define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM 9 178 #define HID_LOCAL_ITEM_TAG_DELIMITER 10 179 180 /* 181 * HID usage tables 182 */ 183 184 #define HID_USAGE_PAGE 0xffff0000 185 186 #define HID_UP_UNDEFINED 0x00000000 187 #define HID_UP_GENDESK 0x00010000 188 #define HID_UP_SIMULATION 0x00020000 189 #define HID_UP_KEYBOARD 0x00070000 190 #define HID_UP_LED 0x00080000 191 #define HID_UP_BUTTON 0x00090000 192 #define HID_UP_ORDINAL 0x000a0000 193 #define HID_UP_CONSUMER 0x000c0000 194 #define HID_UP_DIGITIZER 0x000d0000 195 #define HID_UP_PID 0x000f0000 196 #define HID_UP_HPVENDOR 0xff7f0000 197 #define HID_UP_MSVENDOR 0xff000000 198 #define HID_UP_CUSTOM 0x00ff0000 199 #define HID_UP_LOGIVENDOR 0xffbc0000 200 201 #define HID_USAGE 0x0000ffff 202 203 #define HID_GD_POINTER 0x00010001 204 #define HID_GD_MOUSE 0x00010002 205 #define HID_GD_JOYSTICK 0x00010004 206 #define HID_GD_GAMEPAD 0x00010005 207 #define HID_GD_KEYBOARD 0x00010006 208 #define HID_GD_KEYPAD 0x00010007 209 #define HID_GD_MULTIAXIS 0x00010008 210 #define HID_GD_X 0x00010030 211 #define HID_GD_Y 0x00010031 212 #define HID_GD_Z 0x00010032 213 #define HID_GD_RX 0x00010033 214 #define HID_GD_RY 0x00010034 215 #define HID_GD_RZ 0x00010035 216 #define HID_GD_SLIDER 0x00010036 217 #define HID_GD_DIAL 0x00010037 218 #define HID_GD_WHEEL 0x00010038 219 #define HID_GD_HATSWITCH 0x00010039 220 #define HID_GD_BUFFER 0x0001003a 221 #define HID_GD_BYTECOUNT 0x0001003b 222 #define HID_GD_MOTION 0x0001003c 223 #define HID_GD_START 0x0001003d 224 #define HID_GD_SELECT 0x0001003e 225 #define HID_GD_VX 0x00010040 226 #define HID_GD_VY 0x00010041 227 #define HID_GD_VZ 0x00010042 228 #define HID_GD_VBRX 0x00010043 229 #define HID_GD_VBRY 0x00010044 230 #define HID_GD_VBRZ 0x00010045 231 #define HID_GD_VNO 0x00010046 232 #define HID_GD_FEATURE 0x00010047 233 #define HID_GD_UP 0x00010090 234 #define HID_GD_DOWN 0x00010091 235 #define HID_GD_RIGHT 0x00010092 236 #define HID_GD_LEFT 0x00010093 237 238 /* 239 * HID report types --- Ouch! HID spec says 1 2 3! 240 */ 241 242 #define HID_INPUT_REPORT 0 243 #define HID_OUTPUT_REPORT 1 244 #define HID_FEATURE_REPORT 2 245 246 /* 247 * HID device quirks. 248 */ 249 250 #define HID_QUIRK_INVERT 0x00000001 251 #define HID_QUIRK_NOTOUCH 0x00000002 252 #define HID_QUIRK_IGNORE 0x00000004 253 #define HID_QUIRK_NOGET 0x00000008 254 #define HID_QUIRK_HIDDEV 0x00000010 255 #define HID_QUIRK_BADPAD 0x00000020 256 #define HID_QUIRK_MULTI_INPUT 0x00000040 257 #define HID_QUIRK_2WHEEL_MOUSE_HACK_7 0x00000080 258 #define HID_QUIRK_2WHEEL_MOUSE_HACK_5 0x00000100 259 #define HID_QUIRK_2WHEEL_MOUSE_HACK_ON 0x00000200 260 #define HID_QUIRK_MIGHTYMOUSE 0x00000400 261 #define HID_QUIRK_CYMOTION 0x00000800 262 #define HID_QUIRK_POWERBOOK_HAS_FN 0x00001000 263 #define HID_QUIRK_POWERBOOK_FN_ON 0x00002000 264 #define HID_QUIRK_INVERT_HWHEEL 0x00004000 265 #define HID_QUIRK_POWERBOOK_ISO_KEYBOARD 0x00008000 266 #define HID_QUIRK_BAD_RELATIVE_KEYS 0x00010000 267 #define HID_QUIRK_SKIP_OUTPUT_REPORTS 0x00020000 268 #define HID_QUIRK_IGNORE_MOUSE 0x00040000 269 #define HID_QUIRK_SONY_PS3_CONTROLLER 0x00080000 270 271 /* 272 * This is the global environment of the parser. This information is 273 * persistent for main-items. The global environment can be saved and 274 * restored with PUSH/POP statements. 275 */ 276 277 struct hid_global { 278 unsigned usage_page; 279 __s32 logical_minimum; 280 __s32 logical_maximum; 281 __s32 physical_minimum; 282 __s32 physical_maximum; 283 __s32 unit_exponent; 284 unsigned unit; 285 unsigned report_id; 286 unsigned report_size; 287 unsigned report_count; 288 }; 289 290 /* 291 * This is the local environment. It is persistent up the next main-item. 292 */ 293 294 #define HID_MAX_DESCRIPTOR_SIZE 4096 295 #define HID_MAX_USAGES 1024 296 #define HID_DEFAULT_NUM_COLLECTIONS 16 297 298 struct hid_local { 299 unsigned usage[HID_MAX_USAGES]; /* usage array */ 300 unsigned collection_index[HID_MAX_USAGES]; /* collection index array */ 301 unsigned usage_index; 302 unsigned usage_minimum; 303 unsigned delimiter_depth; 304 unsigned delimiter_branch; 305 }; 306 307 /* 308 * This is the collection stack. We climb up the stack to determine 309 * application and function of each field. 310 */ 311 312 struct hid_collection { 313 unsigned type; 314 unsigned usage; 315 unsigned level; 316 }; 317 318 struct hid_usage { 319 unsigned hid; /* hid usage code */ 320 unsigned collection_index; /* index into collection array */ 321 /* hidinput data */ 322 __u16 code; /* input driver code */ 323 __u8 type; /* input driver type */ 324 __s8 hat_min; /* hat switch fun */ 325 __s8 hat_max; /* ditto */ 326 __s8 hat_dir; /* ditto */ 327 }; 328 329 struct hid_input; 330 331 struct hid_field { 332 unsigned physical; /* physical usage for this field */ 333 unsigned logical; /* logical usage for this field */ 334 unsigned application; /* application usage for this field */ 335 struct hid_usage *usage; /* usage table for this function */ 336 unsigned maxusage; /* maximum usage index */ 337 unsigned flags; /* main-item flags (i.e. volatile,array,constant) */ 338 unsigned report_offset; /* bit offset in the report */ 339 unsigned report_size; /* size of this field in the report */ 340 unsigned report_count; /* number of this field in the report */ 341 unsigned report_type; /* (input,output,feature) */ 342 __s32 *value; /* last known value(s) */ 343 __s32 logical_minimum; 344 __s32 logical_maximum; 345 __s32 physical_minimum; 346 __s32 physical_maximum; 347 __s32 unit_exponent; 348 unsigned unit; 349 struct hid_report *report; /* associated report */ 350 unsigned index; /* index into report->field[] */ 351 /* hidinput data */ 352 struct hid_input *hidinput; /* associated input structure */ 353 __u16 dpad; /* dpad input code */ 354 }; 355 356 #define HID_MAX_FIELDS 64 357 358 struct hid_report { 359 struct list_head list; 360 unsigned id; /* id of this report */ 361 unsigned type; /* report type */ 362 struct hid_field *field[HID_MAX_FIELDS]; /* fields of the report */ 363 unsigned maxfield; /* maximum valid field index */ 364 unsigned size; /* size of the report (bits) */ 365 struct hid_device *device; /* associated device */ 366 }; 367 368 struct hid_report_enum { 369 unsigned numbered; 370 struct list_head report_list; 371 struct hid_report *report_id_hash[256]; 372 }; 373 374 #define HID_REPORT_TYPES 3 375 376 #define HID_MIN_BUFFER_SIZE 64 /* make sure there is at least a packet size of space */ 377 #define HID_MAX_BUFFER_SIZE 4096 /* 4kb */ 378 #define HID_CONTROL_FIFO_SIZE 256 /* to init devices with >100 reports */ 379 #define HID_OUTPUT_FIFO_SIZE 64 380 381 struct hid_control_fifo { 382 unsigned char dir; 383 struct hid_report *report; 384 }; 385 386 #define HID_CLAIMED_INPUT 1 387 #define HID_CLAIMED_HIDDEV 2 388 389 #define HID_CTRL_RUNNING 1 390 #define HID_OUT_RUNNING 2 391 #define HID_IN_RUNNING 3 392 #define HID_RESET_PENDING 4 393 #define HID_SUSPENDED 5 394 #define HID_CLEAR_HALT 6 395 396 struct hid_input { 397 struct list_head list; 398 struct hid_report *report; 399 struct input_dev *input; 400 }; 401 402 struct hid_device { /* device report descriptor */ 403 __u8 *rdesc; 404 unsigned rsize; 405 struct hid_collection *collection; /* List of HID collections */ 406 unsigned collection_size; /* Number of allocated hid_collections */ 407 unsigned maxcollection; /* Number of parsed collections */ 408 unsigned maxapplication; /* Number of applications */ 409 unsigned short bus; /* BUS ID */ 410 unsigned short vendor; /* Vendor ID */ 411 unsigned short product; /* Product ID */ 412 unsigned version; /* HID version */ 413 unsigned country; /* HID country */ 414 struct hid_report_enum report_enum[HID_REPORT_TYPES]; 415 416 struct device *dev; /* device */ 417 418 unsigned claimed; /* Claimed by hidinput, hiddev? */ 419 unsigned quirks; /* Various quirks the device can pull on us */ 420 421 struct list_head inputs; /* The list of inputs */ 422 void *hiddev; /* The hiddev structure */ 423 int minor; /* Hiddev minor number */ 424 425 wait_queue_head_t wait; /* For sleeping */ 426 427 int open; /* is the device open by anyone? */ 428 char name[128]; /* Device name */ 429 char phys[64]; /* Device physical location */ 430 char uniq[64]; /* Device unique identifier (serial #) */ 431 432 void *driver_data; 433 434 /* device-specific function pointers */ 435 int (*hidinput_input_event) (struct input_dev *, unsigned int, unsigned int, int); 436 int (*hid_open) (struct hid_device *); 437 void (*hid_close) (struct hid_device *); 438 439 /* hiddev event handler */ 440 void (*hiddev_hid_event) (struct hid_device *, struct hid_field *field, 441 struct hid_usage *, __s32); 442 void (*hiddev_report_event) (struct hid_device *, struct hid_report *); 443 #ifdef CONFIG_USB_HIDINPUT_POWERBOOK 444 unsigned long pb_pressed_fn[NBITS(KEY_MAX)]; 445 unsigned long pb_pressed_numlock[NBITS(KEY_MAX)]; 446 #endif 447 }; 448 449 #define HID_GLOBAL_STACK_SIZE 4 450 #define HID_COLLECTION_STACK_SIZE 4 451 452 struct hid_parser { 453 struct hid_global global; 454 struct hid_global global_stack[HID_GLOBAL_STACK_SIZE]; 455 unsigned global_stack_ptr; 456 struct hid_local local; 457 unsigned collection_stack[HID_COLLECTION_STACK_SIZE]; 458 unsigned collection_stack_ptr; 459 struct hid_device *device; 460 }; 461 462 struct hid_class_descriptor { 463 __u8 bDescriptorType; 464 __u16 wDescriptorLength; 465 } __attribute__ ((packed)); 466 467 struct hid_descriptor { 468 __u8 bLength; 469 __u8 bDescriptorType; 470 __u16 bcdHID; 471 __u8 bCountryCode; 472 __u8 bNumDescriptors; 473 474 struct hid_class_descriptor desc[1]; 475 } __attribute__ ((packed)); 476 477 /* Applications from HID Usage Tables 4/8/99 Version 1.1 */ 478 /* We ignore a few input applications that are not widely used */ 479 #define IS_INPUT_APPLICATION(a) (((a >= 0x00010000) && (a <= 0x00010008)) || (a == 0x00010080) || (a == 0x000c0001)) 480 481 /* HID core API */ 482 extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32); 483 extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report); 484 extern int hidinput_connect(struct hid_device *); 485 extern void hidinput_disconnect(struct hid_device *); 486 487 int hid_set_field(struct hid_field *, unsigned, __s32); 488 int hid_input_report(struct hid_device *, int type, u8 *, int, int); 489 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field); 490 void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, int interrupt); 491 void hid_output_report(struct hid_report *report, __u8 *data); 492 void hid_free_device(struct hid_device *device); 493 struct hid_device *hid_parse_report(__u8 *start, unsigned size); 494 495 #ifdef CONFIG_HID_FF 496 int hid_ff_init(struct hid_device *hid); 497 498 int hid_lgff_init(struct hid_device *hid); 499 int hid_plff_init(struct hid_device *hid); 500 int hid_tmff_init(struct hid_device *hid); 501 int hid_zpff_init(struct hid_device *hid); 502 #ifdef CONFIG_HID_PID 503 int hid_pidff_init(struct hid_device *hid); 504 #else 505 static inline int hid_pidff_init(struct hid_device *hid) { return -ENODEV; } 506 #endif 507 508 #else 509 static inline int hid_ff_init(struct hid_device *hid) { return -1; } 510 #endif 511 #ifdef DEBUG 512 #define dbg(format, arg...) printk(KERN_DEBUG "%s: " format "\n" , \ 513 __FILE__ , ## arg) 514 #else 515 #define dbg(format, arg...) do {} while (0) 516 #endif 517 518 #define err(format, arg...) printk(KERN_ERR "%s: " format "\n" , \ 519 __FILE__ , ## arg) 520 #endif 521 522