1/* 2 * $Id: hid-input.c,v 1.1.1.1 2008/10/15 03:26:58 james26_jang Exp $ 3 * 4 * Copyright (c) 2000-2001 Vojtech Pavlik 5 * 6 * USB HID to Linux Input mapping module 7 * 8 * Sponsored by SuSE 9 */ 10 11/* 12 * This program is free software; you can redistribute it and/or modify 13 * it under the terms of the GNU General Public License as published by 14 * the Free Software Foundation; either version 2 of the License, or 15 * (at your option) any later version. 16 * 17 * This program is distributed in the hope that it will be useful, 18 * but WITHOUT ANY WARRANTY; without even the implied warranty of 19 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 20 * GNU General Public License for more details. 21 * 22 * You should have received a copy of the GNU General Public License 23 * along with this program; if not, write to the Free Software 24 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA 25 * 26 * Should you need to contact me, the author, you can do so either by 27 * e-mail - mail your message to <vojtech@suse.cz>, or by paper mail: 28 * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic 29 */ 30 31#include <linux/module.h> 32#include <linux/slab.h> 33#include <linux/init.h> 34#include <linux/kernel.h> 35#include <linux/input.h> 36#include <linux/usb.h> 37 38#include "hid.h" 39 40#define unk KEY_UNKNOWN 41 42static unsigned char hid_keyboard[256] = { 43 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38, 44 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3, 45 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26, 46 27, 43, 84, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64, 47 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106, 48 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71, 49 72, 73, 82, 83, 86,127,116,117, 85, 89, 90, 91, 92, 93, 94, 95, 50 120,121,122,123,134,138,130,132,128,129,131,137,133,135,136,113, 51 115,114,unk,unk,unk,124,unk,181,182,183,184,185,186,187,188,189, 52 190,191,192,193,194,195,196,197,198,unk,unk,unk,unk,unk,unk,unk, 53 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, 54 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, 55 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, 56 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, 57 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113, 58 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk 59}; 60 61static struct { 62 __s32 x; 63 __s32 y; 64} hid_hat_to_axis[] = {{0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}}; 65 66static struct input_dev *find_input(struct hid_device *hid, struct hid_field *field) 67{ 68 struct list_head *lh; 69 struct hid_input *hidinput; 70 71 list_for_each (lh, &hid->inputs) { 72 int i; 73 74 hidinput = list_entry(lh, struct hid_input, list); 75 76 if (! hidinput->report) 77 continue; 78 79 for (i = 0; i < hidinput->report->maxfield; i++) 80 if (hidinput->report->field[i] == field) 81 return &hidinput->input; 82 } 83 84 /* Assume we only have one input and use it */ 85 if (!list_empty(&hid->inputs)) { 86 hidinput = list_entry(hid->inputs.next, struct hid_input, list); 87 return &hidinput->input; 88 } 89 90 /* This is really a bug */ 91 return NULL; 92} 93 94static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, 95 struct hid_usage *usage) 96{ 97 struct input_dev *input = &hidinput->input; 98 struct hid_device *device = hidinput->input.private; 99 int max; 100 unsigned long *bit; 101 102 switch (usage->hid & HID_USAGE_PAGE) { 103 104 case HID_UP_KEYBOARD: 105 106 set_bit(EV_REP, input->evbit); 107 usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; 108 109 if ((usage->hid & HID_USAGE) < 256) { 110 if (!(usage->code = hid_keyboard[usage->hid & HID_USAGE])) 111 return; 112 clear_bit(usage->code, bit); 113 } else 114 usage->code = KEY_UNKNOWN; 115 116 break; 117 118 case HID_UP_BUTTON: 119 120 usage->code = ((usage->hid - 1) & 0xf) + 0x100; 121 usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; 122 123 switch (field->application) { 124 case HID_GD_GAMEPAD: usage->code += 0x10; 125 case HID_GD_JOYSTICK: usage->code += 0x10; 126 case HID_GD_MOUSE: usage->code += 0x10; break; 127 default: 128 if (field->physical == HID_GD_POINTER) 129 usage->code += 0x10; 130 break; 131 } 132 break; 133 134 case HID_UP_GENDESK: 135 136 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ 137 switch (usage->hid & 0xf) { 138 case 0x1: usage->code = KEY_POWER; break; 139 case 0x2: usage->code = KEY_SLEEP; break; 140 case 0x3: usage->code = KEY_WAKEUP; break; 141 default: usage->code = KEY_UNKNOWN; break; 142 } 143 usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; 144 break; 145 } 146 147 usage->code = usage->hid & 0xf; 148 149 if (field->report_size == 1) { 150 usage->code = BTN_MISC; 151 usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; 152 break; 153 } 154 155 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 156 usage->type = EV_REL; bit = input->relbit; max = REL_MAX; 157 break; 158 } 159 160 usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX; 161 162 if (usage->hid == HID_GD_HATSWITCH) { 163 usage->code = ABS_HAT0X; 164 usage->hat_min = field->logical_minimum; 165 usage->hat_max = field->logical_maximum; 166 } 167 break; 168 169 case HID_UP_LED: 170 171 usage->code = (usage->hid - 1) & 0xf; 172 usage->type = EV_LED; bit = input->ledbit; max = LED_MAX; 173 break; 174 175 case HID_UP_DIGITIZER: 176 177 switch (usage->hid & 0xff) { 178 179 case 0x30: /* TipPressure */ 180 181 if (!test_bit(BTN_TOUCH, input->keybit)) { 182 device->quirks |= HID_QUIRK_NOTOUCH; 183 set_bit(EV_KEY, input->evbit); 184 set_bit(BTN_TOUCH, input->keybit); 185 } 186 usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX; 187 usage->code = ABS_PRESSURE; 188 clear_bit(usage->code, bit); 189 break; 190 191 case 0x32: /* InRange */ 192 193 usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; 194 switch (field->physical & 0xff) { 195 case 0x21: usage->code = BTN_TOOL_MOUSE; break; 196 case 0x22: usage->code = BTN_TOOL_FINGER; break; 197 default: usage->code = BTN_TOOL_PEN; break; 198 } 199 break; 200 201 case 0x3c: /* Invert */ 202 203 usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; 204 usage->code = BTN_TOOL_RUBBER; 205 clear_bit(usage->code, bit); 206 break; 207 208 case 0x33: /* Touch */ 209 case 0x42: /* TipSwitch */ 210 case 0x43: /* TipSwitch2 */ 211 212 device->quirks &= ~HID_QUIRK_NOTOUCH; 213 usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; 214 usage->code = BTN_TOUCH; 215 clear_bit(usage->code, bit); 216 break; 217 218 case 0x44: /* BarrelSwitch */ 219 220 usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; 221 usage->code = BTN_STYLUS; 222 clear_bit(usage->code, bit); 223 break; 224 225 default: goto unknown; 226 } 227 break; 228 229 case HID_UP_CONSUMER: /* USB HUT v1.1, pages 56-62 */ 230 231 switch (usage->hid & HID_USAGE) { 232 case 0x000: usage->code = 0; break; 233 case 0x034: usage->code = KEY_SLEEP; break; 234 case 0x036: usage->code = BTN_MISC; break; 235 case 0x08a: usage->code = KEY_WWW; break; 236 case 0x095: usage->code = KEY_HELP; break; 237 238 case 0x0b4: usage->code = KEY_REWIND; break; 239 case 0x0b5: usage->code = KEY_NEXTSONG; break; 240 case 0x0b6: usage->code = KEY_PREVIOUSSONG; break; 241 case 0x0b7: usage->code = KEY_STOPCD; break; 242 case 0x0b8: usage->code = KEY_EJECTCD; break; 243 case 0x0cd: usage->code = KEY_PLAYPAUSE; break; 244 245 case 0x0e2: usage->code = KEY_MUTE; break; 246 case 0x0e9: usage->code = KEY_VOLUMEUP; break; 247 case 0x0ea: usage->code = KEY_VOLUMEDOWN; break; 248 249 case 0x183: usage->code = KEY_CONFIG; break; 250 case 0x18a: usage->code = KEY_MAIL; break; 251 case 0x192: usage->code = KEY_CALC; break; 252 case 0x194: usage->code = KEY_FILE; break; 253 254 case 0x21a: usage->code = KEY_UNDO; break; 255 case 0x21b: usage->code = KEY_COPY; break; 256 case 0x21c: usage->code = KEY_CUT; break; 257 case 0x21d: usage->code = KEY_PASTE; break; 258 259 case 0x221: usage->code = KEY_FIND; break; 260 case 0x223: usage->code = KEY_HOMEPAGE; break; 261 case 0x224: usage->code = KEY_BACK; break; 262 case 0x225: usage->code = KEY_FORWARD; break; 263 case 0x226: usage->code = KEY_STOP; break; 264 case 0x227: usage->code = KEY_REFRESH; break; 265 case 0x22a: usage->code = KEY_BOOKMARKS; break; 266 267 default: usage->code = KEY_UNKNOWN; break; 268 269 } 270 271 usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; 272 break; 273 274 default: 275 unknown: 276 277 if (field->report_size == 1) { 278 279 if (field->report->type == HID_OUTPUT_REPORT) { 280 usage->code = LED_MISC; 281 usage->type = EV_LED; bit = input->ledbit; max = LED_MAX; 282 break; 283 } 284 285 usage->code = BTN_MISC; 286 usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; 287 break; 288 } 289 290 if (field->flags & HID_MAIN_ITEM_RELATIVE) { 291 usage->code = REL_MISC; 292 usage->type = EV_REL; bit = input->relbit; max = REL_MAX; 293 break; 294 } 295 296 usage->code = ABS_MISC; 297 usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX; 298 break; 299 } 300 301 set_bit(usage->type, input->evbit); 302 303 while (usage->code <= max && test_and_set_bit(usage->code, bit)) { 304 usage->code = find_next_zero_bit(bit, max + 1, usage->code); 305 } 306 307 if (usage->code > max) return; 308 309 if (usage->type == EV_ABS) { 310 int a = field->logical_minimum; 311 int b = field->logical_maximum; 312 313 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { 314 a = field->logical_minimum = 0; 315 b = field->logical_maximum = 255; 316 } 317 318 input->absmin[usage->code] = a; 319 input->absmax[usage->code] = b; 320 input->absfuzz[usage->code] = 0; 321 input->absflat[usage->code] = 0; 322 323 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) { 324 input->absfuzz[usage->code] = (b - a) >> 8; 325 input->absflat[usage->code] = (b - a) >> 4; 326 } 327 } 328 329 if (usage->hat_min != usage->hat_max) { 330 int i; 331 for (i = usage->code; i < usage->code + 2 && i <= max; i++) { 332 input->absmax[i] = 1; 333 input->absmin[i] = -1; 334 input->absfuzz[i] = 0; 335 input->absflat[i] = 0; 336 } 337 set_bit(usage->code + 1, input->absbit); 338 } 339} 340 341void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) 342{ 343 struct input_dev *input = find_input(hid, field); 344 int *quirks = &hid->quirks; 345 346 if (!input) 347 return; 348 349 if (usage->hat_min != usage->hat_max) { 350 value = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; 351 if (value < 0 || value > 8) value = 0; 352 input_event(input, usage->type, usage->code , hid_hat_to_axis[value].x); 353 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[value].y); 354 return; 355 } 356 357 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */ 358 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); 359 return; 360 } 361 362 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */ 363 if (value) { 364 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); 365 return; 366 } 367 input_event(input, usage->type, usage->code, 0); 368 input_event(input, usage->type, BTN_TOOL_RUBBER, 0); 369 return; 370 } 371 372 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */ 373 int a = field->logical_minimum; 374 int b = field->logical_maximum; 375 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); 376 } 377 378 if((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UKNOWN */ 379 return; 380 381 input_event(input, usage->type, usage->code, value); 382 383 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY)) 384 input_event(input, usage->type, usage->code, 0); 385} 386 387static int hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value) 388{ 389 struct hid_device *hid = dev->private; 390 struct hid_field *field = NULL; 391 int offset; 392 393 if ((offset = hid_find_field(hid, type, code, &field)) == -1) { 394 warn("event field not found"); 395 return -1; 396 } 397 398 hid_set_field(field, offset, value); 399 hid_write_report(hid, field->report); 400 401 return 0; 402} 403 404static int hidinput_open(struct input_dev *dev) 405{ 406 struct hid_device *hid = dev->private; 407 return hid_open(hid); 408} 409 410static void hidinput_close(struct input_dev *dev) 411{ 412 struct hid_device *hid = dev->private; 413 hid_close(hid); 414} 415 416/* 417 * Register the input device; print a message. 418 * Configure the input layer interface 419 * Read all reports and initalize the absoulte field values. 420 */ 421 422int hidinput_connect(struct hid_device *hid) 423{ 424 struct usb_device *dev = hid->dev; 425 struct hid_report_enum *report_enum; 426 struct hid_report *report; 427 struct list_head *list; 428 struct hid_input *hidinput = NULL; 429 int i, j, k; 430 431 INIT_LIST_HEAD(&hid->inputs); 432 433 for (i = 0; i < hid->maxcollection; i++) 434 if (hid->collection[i].type == HID_COLLECTION_APPLICATION && 435 IS_INPUT_APPLICATION(hid->collection[i].usage)) 436 break; 437 438 if (i == hid->maxcollection) 439 return -1; 440 441 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { 442 report_enum = hid->report_enum + k; 443 list = report_enum->report_list.next; 444 while (list != &report_enum->report_list) { 445 report = (struct hid_report *) list; 446 447 if (!report->maxfield) { 448 list = list->next; 449 continue; 450 } 451 452 if (!hidinput) { 453 hidinput = kmalloc(sizeof(*hidinput), GFP_KERNEL); 454 if (!hidinput) { 455 err("Out of memory during hid input probe"); 456 return -1; 457 } 458 memset(hidinput, 0, sizeof(*hidinput)); 459 list_add_tail(&hidinput->list, &hid->inputs); 460 461 hidinput->input.private = hid; 462 hidinput->input.event = hidinput_input_event; 463 hidinput->input.open = hidinput_open; 464 hidinput->input.close = hidinput_close; 465 466 hidinput->input.name = hid->name; 467 hidinput->input.idbus = BUS_USB; 468 hidinput->input.idvendor = dev->descriptor.idVendor; 469 hidinput->input.idproduct = dev->descriptor.idProduct; 470 hidinput->input.idversion = dev->descriptor.bcdDevice; 471 } 472 473 for (i = 0; i < report->maxfield; i++) 474 for (j = 0; j < report->field[i]->maxusage; j++) 475 hidinput_configure_usage(hidinput, report->field[i], 476 report->field[i]->usage + j); 477 478 if (hid->quirks & HID_QUIRK_MULTI_INPUT) { 479 /* This will leave hidinput NULL, so that it 480 * allocates another one if we have more inputs on 481 * the same interface. Some devices (e.g. Happ's 482 * UGCI) cram a lot of unrelated inputs into the 483 * same interface. */ 484 hidinput->report = report; 485 input_register_device(&hidinput->input); 486 hidinput = NULL; 487 } 488 489 list = list->next; 490 } 491 } 492 493 if (hidinput) 494 input_register_device(&hidinput->input); 495 496 return 0; 497} 498 499void hidinput_disconnect(struct hid_device *hid) 500{ 501 struct list_head *lh, *next; 502 struct hid_input *hidinput; 503 504 list_for_each_safe (lh, next, &hid->inputs) { 505 hidinput = list_entry(lh, struct hid_input, list); 506 input_unregister_device(&hidinput->input); 507 list_del(&hidinput->list); 508 kfree(hidinput); 509 } 510} 511