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HID: length resolution should be reported units/mm
[linux-2.6/kvm.git] / drivers / hid / hid-input.c
blob30af8760174b3c85b86801d1ce0074ed2a2a3fbd
1 /*
2 * Copyright (c) 2000-2001 Vojtech Pavlik
3 * Copyright (c) 2006-2010 Jiri Kosina
4 *
5 * HID to Linux Input mapping
6 */
7
8 /*
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 * Should you need to contact me, the author, you can do so either by
24 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
25 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
26 */
27
28 #include <linux/module.h>
29 #include <linux/slab.h>
30 #include <linux/kernel.h>
31
32 #include <linux/hid.h>
33 #include <linux/hid-debug.h>
34
35 #define unk KEY_UNKNOWN
36
37 static const unsigned char hid_keyboard[256] = {
38 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
39 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
40 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
41 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
42 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
43 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
44 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
45 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
46 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
47 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
48 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
49 unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk,
50 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
51 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
52 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
53 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
54 };
55
56 static const struct {
57 __s32 x;
58 __s32 y;
59 } hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
60
61 #define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
62 #define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
63 #define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
64 #define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
65
66 #define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
67 &max, EV_ABS, (c))
68 #define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
69 &max, EV_KEY, (c))
70
71 static inline int match_scancode(unsigned int code, unsigned int scancode)
72 {
73 if (scancode == 0)
74 return 1;
75
76 return (code & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
77 }
78
79 static inline int match_keycode(unsigned int code, unsigned int keycode)
80 {
81 if (keycode == 0)
82 return 1;
83
84 return code == keycode;
85 }
86
87 static struct hid_usage *hidinput_find_key(struct hid_device *hid,
88 unsigned int scancode,
89 unsigned int keycode)
90 {
91 int i, j, k;
92 struct hid_report *report;
93 struct hid_usage *usage;
94
95 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
96 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
97 for (i = 0; i < report->maxfield; i++) {
98 for ( j = 0; j < report->field[i]->maxusage; j++) {
99 usage = report->field[i]->usage + j;
100 if (usage->type == EV_KEY &&
101 match_scancode(usage->hid, scancode) &&
102 match_keycode(usage->code, keycode))
103 return usage;
104 }
105 }
106 }
107 }
108 return NULL;
109 }
110
111 static int hidinput_getkeycode(struct input_dev *dev,
112 unsigned int scancode, unsigned int *keycode)
113 {
114 struct hid_device *hid = input_get_drvdata(dev);
115 struct hid_usage *usage;
116
117 usage = hidinput_find_key(hid, scancode, 0);
118 if (usage) {
119 *keycode = usage->code;
120 return 0;
121 }
122 return -EINVAL;
123 }
124
125 static int hidinput_setkeycode(struct input_dev *dev,
126 unsigned int scancode, unsigned int keycode)
127 {
128 struct hid_device *hid = input_get_drvdata(dev);
129 struct hid_usage *usage;
130 int old_keycode;
131
132 usage = hidinput_find_key(hid, scancode, 0);
133 if (usage) {
134 old_keycode = usage->code;
135 usage->code = keycode;
136
137 clear_bit(old_keycode, dev->keybit);
138 set_bit(usage->code, dev->keybit);
139 dbg_hid("Assigned keycode %d to HID usage code %x\n",
140 keycode, scancode);
141 /* Set the keybit for the old keycode if the old keycode is used
142 * by another key */
143 if (hidinput_find_key (hid, 0, old_keycode))
144 set_bit(old_keycode, dev->keybit);
145
146 return 0;
147 }
148
149 return -EINVAL;
150 }
151
152
153 /**
154 * hidinput_calc_abs_res - calculate an absolute axis resolution
155 * @field: the HID report field to calculate resolution for
156 * @code: axis code
157 *
158 * The formula is:
159 * (logical_maximum - logical_minimum)
160 * resolution = ----------------------------------------------------------
161 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent
162 *
163 * as seen in the HID specification v1.11 6.2.2.7 Global Items.
164 *
165 * Only exponent 1 length units are processed. Centimeters and inches are
166 * converted to millimeters. Degrees are converted to radians.
167 */
168 static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
169 {
170 __s32 unit_exponent = field->unit_exponent;
171 __s32 logical_extents = field->logical_maximum -
172 field->logical_minimum;
173 __s32 physical_extents = field->physical_maximum -
174 field->physical_minimum;
175 __s32 prev;
176
177 /* Check if the extents are sane */
178 if (logical_extents <= 0 || physical_extents <= 0)
179 return 0;
180
181 /*
182 * Verify and convert units.
183 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
184 */
185 if (code == ABS_X || code == ABS_Y || code == ABS_Z) {
186 if (field->unit == 0x11) { /* If centimeters */
187 /* Convert to millimeters */
188 unit_exponent += 1;
189 } else if (field->unit == 0x13) { /* If inches */
190 /* Convert to millimeters */
191 prev = physical_extents;
192 physical_extents *= 254;
193 if (physical_extents < prev)
194 return 0;
195 unit_exponent -= 1;
196 } else {
197 return 0;
198 }
199 } else if (code == ABS_RX || code == ABS_RY || code == ABS_RZ) {
200 if (field->unit == 0x14) { /* If degrees */
201 /* Convert to radians */
202 prev = logical_extents;
203 logical_extents *= 573;
204 if (logical_extents < prev)
205 return 0;
206 unit_exponent += 1;
207 } else if (field->unit != 0x12) { /* If not radians */
208 return 0;
209 }
210 } else {
211 return 0;
212 }
213
214 /* Apply negative unit exponent */
215 for (; unit_exponent < 0; unit_exponent++) {
216 prev = logical_extents;
217 logical_extents *= 10;
218 if (logical_extents < prev)
219 return 0;
220 }
221 /* Apply positive unit exponent */
222 for (; unit_exponent > 0; unit_exponent--) {
223 prev = physical_extents;
224 physical_extents *= 10;
225 if (physical_extents < prev)
226 return 0;
227 }
228
229 /* Calculate resolution */
230 return logical_extents / physical_extents;
231 }
232
233 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
234 struct hid_usage *usage)
235 {
236 struct input_dev *input = hidinput->input;
237 struct hid_device *device = input_get_drvdata(input);
238 int max = 0, code;
239 unsigned long *bit = NULL;
240
241 field->hidinput = hidinput;
242
243 if (field->flags & HID_MAIN_ITEM_CONSTANT)
244 goto ignore;
245
246 /* only LED usages are supported in output fields */
247 if (field->report_type == HID_OUTPUT_REPORT &&
248 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
249 goto ignore;
250 }
251
252 if (device->driver->input_mapping) {
253 int ret = device->driver->input_mapping(device, hidinput, field,
254 usage, &bit, &max);
255 if (ret > 0)
256 goto mapped;
257 if (ret < 0)
258 goto ignore;
259 }
260
261 switch (usage->hid & HID_USAGE_PAGE) {
262 case HID_UP_UNDEFINED:
263 goto ignore;
264
265 case HID_UP_KEYBOARD:
266 set_bit(EV_REP, input->evbit);
267
268 if ((usage->hid & HID_USAGE) < 256) {
269 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
270 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
271 } else
272 map_key(KEY_UNKNOWN);
273
274 break;
275
276 case HID_UP_BUTTON:
277 code = ((usage->hid - 1) & HID_USAGE);
278
279 switch (field->application) {
280 case HID_GD_MOUSE:
281 case HID_GD_POINTER: code += 0x110; break;
282 case HID_GD_JOYSTICK:
283 if (code <= 0xf)
284 code += BTN_JOYSTICK;
285 else
286 code += BTN_TRIGGER_HAPPY;
287 break;
288 case HID_GD_GAMEPAD: code += 0x130; break;
289 default:
290 switch (field->physical) {
291 case HID_GD_MOUSE:
292 case HID_GD_POINTER: code += 0x110; break;
293 case HID_GD_JOYSTICK: code += 0x120; break;
294 case HID_GD_GAMEPAD: code += 0x130; break;
295 default: code += 0x100;
296 }
297 }
298
299 map_key(code);
300 break;
301
302 case HID_UP_SIMULATION:
303 switch (usage->hid & 0xffff) {
304 case 0xba: map_abs(ABS_RUDDER); break;
305 case 0xbb: map_abs(ABS_THROTTLE); break;
306 case 0xc4: map_abs(ABS_GAS); break;
307 case 0xc5: map_abs(ABS_BRAKE); break;
308 case 0xc8: map_abs(ABS_WHEEL); break;
309 default: goto ignore;
310 }
311 break;
312
313 case HID_UP_GENDESK:
314 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
315 switch (usage->hid & 0xf) {
316 case 0x1: map_key_clear(KEY_POWER); break;
317 case 0x2: map_key_clear(KEY_SLEEP); break;
318 case 0x3: map_key_clear(KEY_WAKEUP); break;
319 default: goto unknown;
320 }
321 break;
322 }
323
324 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
325 switch (usage->hid) {
326 case HID_GD_UP: usage->hat_dir = 1; break;
327 case HID_GD_DOWN: usage->hat_dir = 5; break;
328 case HID_GD_RIGHT: usage->hat_dir = 3; break;
329 case HID_GD_LEFT: usage->hat_dir = 7; break;
330 default: goto unknown;
331 }
332 if (field->dpad) {
333 map_abs(field->dpad);
334 goto ignore;
335 }
336 map_abs(ABS_HAT0X);
337 break;
338 }
339
340 switch (usage->hid) {
341 /* These usage IDs map directly to the usage codes. */
342 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
343 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
344 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
345 if (field->flags & HID_MAIN_ITEM_RELATIVE)
346 map_rel(usage->hid & 0xf);
347 else
348 map_abs(usage->hid & 0xf);
349 break;
350
351 case HID_GD_HATSWITCH:
352 usage->hat_min = field->logical_minimum;
353 usage->hat_max = field->logical_maximum;
354 map_abs(ABS_HAT0X);
355 break;
356
357 case HID_GD_START: map_key_clear(BTN_START); break;
358 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
359
360 default: goto unknown;
361 }
362
363 break;
364
365 case HID_UP_LED:
366 switch (usage->hid & 0xffff) { /* HID-Value: */
367 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
368 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
369 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
370 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
371 case 0x05: map_led (LED_KANA); break; /* "Kana" */
372 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
373 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
374 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
375 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
376 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
377 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
378
379 default: goto ignore;
380 }
381 break;
382
383 case HID_UP_DIGITIZER:
384 switch (usage->hid & 0xff) {
385 case 0x00: /* Undefined */
386 goto ignore;
387
388 case 0x30: /* TipPressure */
389 if (!test_bit(BTN_TOUCH, input->keybit)) {
390 device->quirks |= HID_QUIRK_NOTOUCH;
391 set_bit(EV_KEY, input->evbit);
392 set_bit(BTN_TOUCH, input->keybit);
393 }
394 map_abs_clear(ABS_PRESSURE);
395 break;
396
397 case 0x32: /* InRange */
398 switch (field->physical & 0xff) {
399 case 0x21: map_key(BTN_TOOL_MOUSE); break;
400 case 0x22: map_key(BTN_TOOL_FINGER); break;
401 default: map_key(BTN_TOOL_PEN); break;
402 }
403 break;
404
405 case 0x3c: /* Invert */
406 map_key_clear(BTN_TOOL_RUBBER);
407 break;
408
409 case 0x33: /* Touch */
410 case 0x42: /* TipSwitch */
411 case 0x43: /* TipSwitch2 */
412 device->quirks &= ~HID_QUIRK_NOTOUCH;
413 map_key_clear(BTN_TOUCH);
414 break;
415
416 case 0x44: /* BarrelSwitch */
417 map_key_clear(BTN_STYLUS);
418 break;
419
420 case 0x46: /* TabletPick */
421 map_key_clear(BTN_STYLUS2);
422 break;
423
424 default: goto unknown;
425 }
426 break;
427
428 case HID_UP_CONSUMER: /* USB HUT v1.1, pages 56-62 */
429 switch (usage->hid & HID_USAGE) {
430 case 0x000: goto ignore;
431 case 0x034: map_key_clear(KEY_SLEEP); break;
432 case 0x036: map_key_clear(BTN_MISC); break;
433
434 case 0x040: map_key_clear(KEY_MENU); break;
435 case 0x045: map_key_clear(KEY_RADIO); break;
436
437 case 0x083: map_key_clear(KEY_LAST); break;
438 case 0x088: map_key_clear(KEY_PC); break;
439 case 0x089: map_key_clear(KEY_TV); break;
440 case 0x08a: map_key_clear(KEY_WWW); break;
441 case 0x08b: map_key_clear(KEY_DVD); break;
442 case 0x08c: map_key_clear(KEY_PHONE); break;
443 case 0x08d: map_key_clear(KEY_PROGRAM); break;
444 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
445 case 0x08f: map_key_clear(KEY_GAMES); break;
446 case 0x090: map_key_clear(KEY_MEMO); break;
447 case 0x091: map_key_clear(KEY_CD); break;
448 case 0x092: map_key_clear(KEY_VCR); break;
449 case 0x093: map_key_clear(KEY_TUNER); break;
450 case 0x094: map_key_clear(KEY_EXIT); break;
451 case 0x095: map_key_clear(KEY_HELP); break;
452 case 0x096: map_key_clear(KEY_TAPE); break;
453 case 0x097: map_key_clear(KEY_TV2); break;
454 case 0x098: map_key_clear(KEY_SAT); break;
455 case 0x09a: map_key_clear(KEY_PVR); break;
456
457 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
458 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
459 case 0x0a0: map_key_clear(KEY_VCR2); break;
460
461 case 0x0b0: map_key_clear(KEY_PLAY); break;
462 case 0x0b1: map_key_clear(KEY_PAUSE); break;
463 case 0x0b2: map_key_clear(KEY_RECORD); break;
464 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
465 case 0x0b4: map_key_clear(KEY_REWIND); break;
466 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
467 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
468 case 0x0b7: map_key_clear(KEY_STOPCD); break;
469 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
470 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
471
472 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
473 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
474 case 0x0e2: map_key_clear(KEY_MUTE); break;
475 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
476 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
477 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
478
479 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
480 case 0x183: map_key_clear(KEY_CONFIG); break;
481 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
482 case 0x185: map_key_clear(KEY_EDITOR); break;
483 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
484 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
485 case 0x188: map_key_clear(KEY_PRESENTATION); break;
486 case 0x189: map_key_clear(KEY_DATABASE); break;
487 case 0x18a: map_key_clear(KEY_MAIL); break;
488 case 0x18b: map_key_clear(KEY_NEWS); break;
489 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
490 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
491 case 0x18e: map_key_clear(KEY_CALENDAR); break;
492 case 0x191: map_key_clear(KEY_FINANCE); break;
493 case 0x192: map_key_clear(KEY_CALC); break;
494 case 0x194: map_key_clear(KEY_FILE); break;
495 case 0x196: map_key_clear(KEY_WWW); break;
496 case 0x199: map_key_clear(KEY_CHAT); break;
497 case 0x19c: map_key_clear(KEY_LOGOFF); break;
498 case 0x19e: map_key_clear(KEY_COFFEE); break;
499 case 0x1a6: map_key_clear(KEY_HELP); break;
500 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
501 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
502 case 0x1b6: map_key_clear(KEY_MEDIA); break;
503 case 0x1b7: map_key_clear(KEY_SOUND); break;
504 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
505 case 0x1bd: map_key_clear(KEY_INFO); break;
506 case 0x201: map_key_clear(KEY_NEW); break;
507 case 0x202: map_key_clear(KEY_OPEN); break;
508 case 0x203: map_key_clear(KEY_CLOSE); break;
509 case 0x204: map_key_clear(KEY_EXIT); break;
510 case 0x207: map_key_clear(KEY_SAVE); break;
511 case 0x208: map_key_clear(KEY_PRINT); break;
512 case 0x209: map_key_clear(KEY_PROPS); break;
513 case 0x21a: map_key_clear(KEY_UNDO); break;
514 case 0x21b: map_key_clear(KEY_COPY); break;
515 case 0x21c: map_key_clear(KEY_CUT); break;
516 case 0x21d: map_key_clear(KEY_PASTE); break;
517 case 0x21f: map_key_clear(KEY_FIND); break;
518 case 0x221: map_key_clear(KEY_SEARCH); break;
519 case 0x222: map_key_clear(KEY_GOTO); break;
520 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
521 case 0x224: map_key_clear(KEY_BACK); break;
522 case 0x225: map_key_clear(KEY_FORWARD); break;
523 case 0x226: map_key_clear(KEY_STOP); break;
524 case 0x227: map_key_clear(KEY_REFRESH); break;
525 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
526 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
527 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
528 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
529 case 0x233: map_key_clear(KEY_SCROLLUP); break;
530 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
531 case 0x238: map_rel(REL_HWHEEL); break;
532 case 0x25f: map_key_clear(KEY_CANCEL); break;
533 case 0x279: map_key_clear(KEY_REDO); break;
534
535 case 0x289: map_key_clear(KEY_REPLY); break;
536 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
537 case 0x28c: map_key_clear(KEY_SEND); break;
538
539 default: goto ignore;
540 }
541 break;
542
543 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
544 set_bit(EV_REP, input->evbit);
545 switch (usage->hid & HID_USAGE) {
546 case 0x021: map_key_clear(KEY_PRINT); break;
547 case 0x070: map_key_clear(KEY_HP); break;
548 case 0x071: map_key_clear(KEY_CAMERA); break;
549 case 0x072: map_key_clear(KEY_SOUND); break;
550 case 0x073: map_key_clear(KEY_QUESTION); break;
551 case 0x080: map_key_clear(KEY_EMAIL); break;
552 case 0x081: map_key_clear(KEY_CHAT); break;
553 case 0x082: map_key_clear(KEY_SEARCH); break;
554 case 0x083: map_key_clear(KEY_CONNECT); break;
555 case 0x084: map_key_clear(KEY_FINANCE); break;
556 case 0x085: map_key_clear(KEY_SPORT); break;
557 case 0x086: map_key_clear(KEY_SHOP); break;
558 default: goto ignore;
559 }
560 break;
561
562 case HID_UP_MSVENDOR:
563 goto ignore;
564
565 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
566 set_bit(EV_REP, input->evbit);
567 goto ignore;
568
569 case HID_UP_LOGIVENDOR:
570 goto ignore;
571
572 case HID_UP_PID:
573 switch (usage->hid & HID_USAGE) {
574 case 0xa4: map_key_clear(BTN_DEAD); break;
575 default: goto ignore;
576 }
577 break;
578
579 default:
580 unknown:
581 if (field->report_size == 1) {
582 if (field->report->type == HID_OUTPUT_REPORT) {
583 map_led(LED_MISC);
584 break;
585 }
586 map_key(BTN_MISC);
587 break;
588 }
589 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
590 map_rel(REL_MISC);
591 break;
592 }
593 map_abs(ABS_MISC);
594 break;
595 }
596
597 mapped:
598 if (device->driver->input_mapped && device->driver->input_mapped(device,
599 hidinput, field, usage, &bit, &max) < 0)
600 goto ignore;
601
602 set_bit(usage->type, input->evbit);
603
604 while (usage->code <= max && test_and_set_bit(usage->code, bit))
605 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
606
607 if (usage->code > max)
608 goto ignore;
609
610
611 if (usage->type == EV_ABS) {
612
613 int a = field->logical_minimum;
614 int b = field->logical_maximum;
615
616 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
617 a = field->logical_minimum = 0;
618 b = field->logical_maximum = 255;
619 }
620
621 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
622 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
623 else input_set_abs_params(input, usage->code, a, b, 0, 0);
624
625 input_abs_set_res(input, usage->code,
626 hidinput_calc_abs_res(field, usage->code));
627
628 /* use a larger default input buffer for MT devices */
629 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
630 input_set_events_per_packet(input, 60);
631 }
632
633 if (usage->type == EV_ABS &&
634 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
635 int i;
636 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
637 input_set_abs_params(input, i, -1, 1, 0, 0);
638 set_bit(i, input->absbit);
639 }
640 if (usage->hat_dir && !field->dpad)
641 field->dpad = usage->code;
642 }
643
644 /* for those devices which produce Consumer volume usage as relative,
645 * we emulate pressing volumeup/volumedown appropriate number of times
646 * in hidinput_hid_event()
647 */
648 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
649 (usage->code == ABS_VOLUME)) {
650 set_bit(KEY_VOLUMEUP, input->keybit);
651 set_bit(KEY_VOLUMEDOWN, input->keybit);
652 }
653
654 if (usage->type == EV_KEY) {
655 set_bit(EV_MSC, input->evbit);
656 set_bit(MSC_SCAN, input->mscbit);
657 }
658
659 ignore:
660 return;
661
662 }
663
664 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
665 {
666 struct input_dev *input;
667 unsigned *quirks = &hid->quirks;
668
669 if (!field->hidinput)
670 return;
671
672 input = field->hidinput->input;
673
674 if (!usage->type)
675 return;
676
677 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
678 int hat_dir = usage->hat_dir;
679 if (!hat_dir)
680 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
681 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
682 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
683 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
684 return;
685 }
686
687 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
688 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
689 return;
690 }
691
692 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
693 if (value) {
694 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
695 return;
696 }
697 input_event(input, usage->type, usage->code, 0);
698 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
699 return;
700 }
701
702 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
703 int a = field->logical_minimum;
704 int b = field->logical_maximum;
705 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
706 }
707
708 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
709 dbg_hid("Maximum Effects - %d\n",value);
710 return;
711 }
712
713 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
714 dbg_hid("PID Pool Report\n");
715 return;
716 }
717
718 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
719 return;
720
721 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
722 (usage->code == ABS_VOLUME)) {
723 int count = abs(value);
724 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
725 int i;
726
727 for (i = 0; i < count; i++) {
728 input_event(input, EV_KEY, direction, 1);
729 input_sync(input);
730 input_event(input, EV_KEY, direction, 0);
731 input_sync(input);
732 }
733 return;
734 }
735
736 /* report the usage code as scancode if the key status has changed */
737 if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
738 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
739
740 input_event(input, usage->type, usage->code, value);
741
742 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
743 input_event(input, usage->type, usage->code, 0);
744 }
745
746 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
747 {
748 struct hid_input *hidinput;
749
750 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
751 return;
752
753 list_for_each_entry(hidinput, &hid->inputs, list)
754 input_sync(hidinput->input);
755 }
756 EXPORT_SYMBOL_GPL(hidinput_report_event);
757
758 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
759 {
760 struct hid_report *report;
761 int i, j;
762
763 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
764 for (i = 0; i < report->maxfield; i++) {
765 *field = report->field[i];
766 for (j = 0; j < (*field)->maxusage; j++)
767 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
768 return j;
769 }
770 }
771 return -1;
772 }
773 EXPORT_SYMBOL_GPL(hidinput_find_field);
774
775 static int hidinput_open(struct input_dev *dev)
776 {
777 struct hid_device *hid = input_get_drvdata(dev);
778
779 return hid->ll_driver->open(hid);
780 }
781
782 static void hidinput_close(struct input_dev *dev)
783 {
784 struct hid_device *hid = input_get_drvdata(dev);
785
786 hid->ll_driver->close(hid);
787 }
788
789 /*
790 * Register the input device; print a message.
791 * Configure the input layer interface
792 * Read all reports and initialize the absolute field values.
793 */
794
795 int hidinput_connect(struct hid_device *hid, unsigned int force)
796 {
797 struct hid_report *report;
798 struct hid_input *hidinput = NULL;
799 struct input_dev *input_dev;
800 int i, j, k;
801 int max_report_type = HID_OUTPUT_REPORT;
802
803 INIT_LIST_HEAD(&hid->inputs);
804
805 if (!force) {
806 for (i = 0; i < hid->maxcollection; i++) {
807 struct hid_collection *col = &hid->collection[i];
808 if (col->type == HID_COLLECTION_APPLICATION ||
809 col->type == HID_COLLECTION_PHYSICAL)
810 if (IS_INPUT_APPLICATION(col->usage))
811 break;
812 }
813
814 if (i == hid->maxcollection)
815 return -1;
816 }
817
818 if (hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
819 max_report_type = HID_INPUT_REPORT;
820
821 for (k = HID_INPUT_REPORT; k <= max_report_type; k++)
822 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
823
824 if (!report->maxfield)
825 continue;
826
827 if (!hidinput) {
828 hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
829 input_dev = input_allocate_device();
830 if (!hidinput || !input_dev) {
831 kfree(hidinput);
832 input_free_device(input_dev);
833 err_hid("Out of memory during hid input probe");
834 goto out_unwind;
835 }
836
837 input_set_drvdata(input_dev, hid);
838 input_dev->event =
839 hid->ll_driver->hidinput_input_event;
840 input_dev->open = hidinput_open;
841 input_dev->close = hidinput_close;
842 input_dev->setkeycode = hidinput_setkeycode;
843 input_dev->getkeycode = hidinput_getkeycode;
844
845 input_dev->name = hid->name;
846 input_dev->phys = hid->phys;
847 input_dev->uniq = hid->uniq;
848 input_dev->id.bustype = hid->bus;
849 input_dev->id.vendor = hid->vendor;
850 input_dev->id.product = hid->product;
851 input_dev->id.version = hid->version;
852 input_dev->dev.parent = hid->dev.parent;
853 hidinput->input = input_dev;
854 list_add_tail(&hidinput->list, &hid->inputs);
855 }
856
857 for (i = 0; i < report->maxfield; i++)
858 for (j = 0; j < report->field[i]->maxusage; j++)
859 hidinput_configure_usage(hidinput, report->field[i],
860 report->field[i]->usage + j);
861
862 if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
863 /* This will leave hidinput NULL, so that it
864 * allocates another one if we have more inputs on
865 * the same interface. Some devices (e.g. Happ's
866 * UGCI) cram a lot of unrelated inputs into the
867 * same interface. */
868 hidinput->report = report;
869 if (input_register_device(hidinput->input))
870 goto out_cleanup;
871 hidinput = NULL;
872 }
873 }
874
875 if (hidinput && input_register_device(hidinput->input))
876 goto out_cleanup;
877
878 return 0;
879
880 out_cleanup:
881 input_free_device(hidinput->input);
882 kfree(hidinput);
883 out_unwind:
884 /* unwind the ones we already registered */
885 hidinput_disconnect(hid);
886
887 return -1;
888 }
889 EXPORT_SYMBOL_GPL(hidinput_connect);
890
891 void hidinput_disconnect(struct hid_device *hid)
892 {
893 struct hid_input *hidinput, *next;
894
895 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
896 list_del(&hidinput->list);
897 input_unregister_device(hidinput->input);
898 kfree(hidinput);
899 }
900 }
901 EXPORT_SYMBOL_GPL(hidinput_disconnect);
902
kernel-based virtual machine