Loading...
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
37static 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,111,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,111,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
56static 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
71static bool match_scancode(struct hid_usage *usage,
72 unsigned int cur_idx, unsigned int scancode)
73{
74 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
75}
76
77static bool match_keycode(struct hid_usage *usage,
78 unsigned int cur_idx, unsigned int keycode)
79{
80 /*
81 * We should exclude unmapped usages when doing lookup by keycode.
82 */
83 return (usage->type == EV_KEY && usage->code == keycode);
84}
85
86static bool match_index(struct hid_usage *usage,
87 unsigned int cur_idx, unsigned int idx)
88{
89 return cur_idx == idx;
90}
91
92typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
93 unsigned int cur_idx, unsigned int val);
94
95static struct hid_usage *hidinput_find_key(struct hid_device *hid,
96 hid_usage_cmp_t match,
97 unsigned int value,
98 unsigned int *usage_idx)
99{
100 unsigned int i, j, k, cur_idx = 0;
101 struct hid_report *report;
102 struct hid_usage *usage;
103
104 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
105 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
106 for (i = 0; i < report->maxfield; i++) {
107 for (j = 0; j < report->field[i]->maxusage; j++) {
108 usage = report->field[i]->usage + j;
109 if (usage->type == EV_KEY || usage->type == 0) {
110 if (match(usage, cur_idx, value)) {
111 if (usage_idx)
112 *usage_idx = cur_idx;
113 return usage;
114 }
115 cur_idx++;
116 }
117 }
118 }
119 }
120 }
121 return NULL;
122}
123
124static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
125 const struct input_keymap_entry *ke,
126 unsigned int *index)
127{
128 struct hid_usage *usage;
129 unsigned int scancode;
130
131 if (ke->flags & INPUT_KEYMAP_BY_INDEX)
132 usage = hidinput_find_key(hid, match_index, ke->index, index);
133 else if (input_scancode_to_scalar(ke, &scancode) == 0)
134 usage = hidinput_find_key(hid, match_scancode, scancode, index);
135 else
136 usage = NULL;
137
138 return usage;
139}
140
141static int hidinput_getkeycode(struct input_dev *dev,
142 struct input_keymap_entry *ke)
143{
144 struct hid_device *hid = input_get_drvdata(dev);
145 struct hid_usage *usage;
146 unsigned int scancode, index;
147
148 usage = hidinput_locate_usage(hid, ke, &index);
149 if (usage) {
150 ke->keycode = usage->type == EV_KEY ?
151 usage->code : KEY_RESERVED;
152 ke->index = index;
153 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
154 ke->len = sizeof(scancode);
155 memcpy(ke->scancode, &scancode, sizeof(scancode));
156 return 0;
157 }
158
159 return -EINVAL;
160}
161
162static int hidinput_setkeycode(struct input_dev *dev,
163 const struct input_keymap_entry *ke,
164 unsigned int *old_keycode)
165{
166 struct hid_device *hid = input_get_drvdata(dev);
167 struct hid_usage *usage;
168
169 usage = hidinput_locate_usage(hid, ke, NULL);
170 if (usage) {
171 *old_keycode = usage->type == EV_KEY ?
172 usage->code : KEY_RESERVED;
173 usage->code = ke->keycode;
174
175 clear_bit(*old_keycode, dev->keybit);
176 set_bit(usage->code, dev->keybit);
177 dbg_hid("Assigned keycode %d to HID usage code %x\n",
178 usage->code, usage->hid);
179
180 /*
181 * Set the keybit for the old keycode if the old keycode is used
182 * by another key
183 */
184 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
185 set_bit(*old_keycode, dev->keybit);
186
187 return 0;
188 }
189
190 return -EINVAL;
191}
192
193
194/**
195 * hidinput_calc_abs_res - calculate an absolute axis resolution
196 * @field: the HID report field to calculate resolution for
197 * @code: axis code
198 *
199 * The formula is:
200 * (logical_maximum - logical_minimum)
201 * resolution = ----------------------------------------------------------
202 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent
203 *
204 * as seen in the HID specification v1.11 6.2.2.7 Global Items.
205 *
206 * Only exponent 1 length units are processed. Centimeters and inches are
207 * converted to millimeters. Degrees are converted to radians.
208 */
209static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
210{
211 __s32 unit_exponent = field->unit_exponent;
212 __s32 logical_extents = field->logical_maximum -
213 field->logical_minimum;
214 __s32 physical_extents = field->physical_maximum -
215 field->physical_minimum;
216 __s32 prev;
217
218 /* Check if the extents are sane */
219 if (logical_extents <= 0 || physical_extents <= 0)
220 return 0;
221
222 /*
223 * Verify and convert units.
224 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
225 */
226 if (code == ABS_X || code == ABS_Y || code == ABS_Z) {
227 if (field->unit == 0x11) { /* If centimeters */
228 /* Convert to millimeters */
229 unit_exponent += 1;
230 } else if (field->unit == 0x13) { /* If inches */
231 /* Convert to millimeters */
232 prev = physical_extents;
233 physical_extents *= 254;
234 if (physical_extents < prev)
235 return 0;
236 unit_exponent -= 1;
237 } else {
238 return 0;
239 }
240 } else if (code == ABS_RX || code == ABS_RY || code == ABS_RZ) {
241 if (field->unit == 0x14) { /* If degrees */
242 /* Convert to radians */
243 prev = logical_extents;
244 logical_extents *= 573;
245 if (logical_extents < prev)
246 return 0;
247 unit_exponent += 1;
248 } else if (field->unit != 0x12) { /* If not radians */
249 return 0;
250 }
251 } else {
252 return 0;
253 }
254
255 /* Apply negative unit exponent */
256 for (; unit_exponent < 0; unit_exponent++) {
257 prev = logical_extents;
258 logical_extents *= 10;
259 if (logical_extents < prev)
260 return 0;
261 }
262 /* Apply positive unit exponent */
263 for (; unit_exponent > 0; unit_exponent--) {
264 prev = physical_extents;
265 physical_extents *= 10;
266 if (physical_extents < prev)
267 return 0;
268 }
269
270 /* Calculate resolution */
271 return logical_extents / physical_extents;
272}
273
274static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
275 struct hid_usage *usage)
276{
277 struct input_dev *input = hidinput->input;
278 struct hid_device *device = input_get_drvdata(input);
279 int max = 0, code;
280 unsigned long *bit = NULL;
281
282 field->hidinput = hidinput;
283
284 if (field->flags & HID_MAIN_ITEM_CONSTANT)
285 goto ignore;
286
287 /* only LED usages are supported in output fields */
288 if (field->report_type == HID_OUTPUT_REPORT &&
289 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
290 goto ignore;
291 }
292
293 if (device->driver->input_mapping) {
294 int ret = device->driver->input_mapping(device, hidinput, field,
295 usage, &bit, &max);
296 if (ret > 0)
297 goto mapped;
298 if (ret < 0)
299 goto ignore;
300 }
301
302 switch (usage->hid & HID_USAGE_PAGE) {
303 case HID_UP_UNDEFINED:
304 goto ignore;
305
306 case HID_UP_KEYBOARD:
307 set_bit(EV_REP, input->evbit);
308
309 if ((usage->hid & HID_USAGE) < 256) {
310 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
311 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
312 } else
313 map_key(KEY_UNKNOWN);
314
315 break;
316
317 case HID_UP_BUTTON:
318 code = ((usage->hid - 1) & HID_USAGE);
319
320 switch (field->application) {
321 case HID_GD_MOUSE:
322 case HID_GD_POINTER: code += BTN_MOUSE; break;
323 case HID_GD_JOYSTICK:
324 if (code <= 0xf)
325 code += BTN_JOYSTICK;
326 else
327 code += BTN_TRIGGER_HAPPY;
328 break;
329 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
330 default:
331 switch (field->physical) {
332 case HID_GD_MOUSE:
333 case HID_GD_POINTER: code += BTN_MOUSE; break;
334 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
335 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
336 default: code += BTN_MISC;
337 }
338 }
339
340 map_key(code);
341 break;
342
343 case HID_UP_SIMULATION:
344 switch (usage->hid & 0xffff) {
345 case 0xba: map_abs(ABS_RUDDER); break;
346 case 0xbb: map_abs(ABS_THROTTLE); break;
347 case 0xc4: map_abs(ABS_GAS); break;
348 case 0xc5: map_abs(ABS_BRAKE); break;
349 case 0xc8: map_abs(ABS_WHEEL); break;
350 default: goto ignore;
351 }
352 break;
353
354 case HID_UP_GENDESK:
355 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
356 switch (usage->hid & 0xf) {
357 case 0x1: map_key_clear(KEY_POWER); break;
358 case 0x2: map_key_clear(KEY_SLEEP); break;
359 case 0x3: map_key_clear(KEY_WAKEUP); break;
360 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
361 case 0x5: map_key_clear(KEY_MENU); break;
362 case 0x6: map_key_clear(KEY_PROG1); break;
363 case 0x7: map_key_clear(KEY_HELP); break;
364 case 0x8: map_key_clear(KEY_EXIT); break;
365 case 0x9: map_key_clear(KEY_SELECT); break;
366 case 0xa: map_key_clear(KEY_RIGHT); break;
367 case 0xb: map_key_clear(KEY_LEFT); break;
368 case 0xc: map_key_clear(KEY_UP); break;
369 case 0xd: map_key_clear(KEY_DOWN); break;
370 case 0xe: map_key_clear(KEY_POWER2); break;
371 case 0xf: map_key_clear(KEY_RESTART); break;
372 default: goto unknown;
373 }
374 break;
375 }
376
377 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
378 switch (usage->hid) {
379 case HID_GD_UP: usage->hat_dir = 1; break;
380 case HID_GD_DOWN: usage->hat_dir = 5; break;
381 case HID_GD_RIGHT: usage->hat_dir = 3; break;
382 case HID_GD_LEFT: usage->hat_dir = 7; break;
383 default: goto unknown;
384 }
385 if (field->dpad) {
386 map_abs(field->dpad);
387 goto ignore;
388 }
389 map_abs(ABS_HAT0X);
390 break;
391 }
392
393 switch (usage->hid) {
394 /* These usage IDs map directly to the usage codes. */
395 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
396 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
397 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
398 if (field->flags & HID_MAIN_ITEM_RELATIVE)
399 map_rel(usage->hid & 0xf);
400 else
401 map_abs(usage->hid & 0xf);
402 break;
403
404 case HID_GD_HATSWITCH:
405 usage->hat_min = field->logical_minimum;
406 usage->hat_max = field->logical_maximum;
407 map_abs(ABS_HAT0X);
408 break;
409
410 case HID_GD_START: map_key_clear(BTN_START); break;
411 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
412
413 default: goto unknown;
414 }
415
416 break;
417
418 case HID_UP_LED:
419 switch (usage->hid & 0xffff) { /* HID-Value: */
420 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
421 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
422 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
423 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
424 case 0x05: map_led (LED_KANA); break; /* "Kana" */
425 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
426 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
427 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
428 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
429 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
430 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
431
432 default: goto ignore;
433 }
434 break;
435
436 case HID_UP_DIGITIZER:
437 switch (usage->hid & 0xff) {
438 case 0x00: /* Undefined */
439 goto ignore;
440
441 case 0x30: /* TipPressure */
442 if (!test_bit(BTN_TOUCH, input->keybit)) {
443 device->quirks |= HID_QUIRK_NOTOUCH;
444 set_bit(EV_KEY, input->evbit);
445 set_bit(BTN_TOUCH, input->keybit);
446 }
447 map_abs_clear(ABS_PRESSURE);
448 break;
449
450 case 0x32: /* InRange */
451 switch (field->physical & 0xff) {
452 case 0x21: map_key(BTN_TOOL_MOUSE); break;
453 case 0x22: map_key(BTN_TOOL_FINGER); break;
454 default: map_key(BTN_TOOL_PEN); break;
455 }
456 break;
457
458 case 0x3c: /* Invert */
459 map_key_clear(BTN_TOOL_RUBBER);
460 break;
461
462 case 0x33: /* Touch */
463 case 0x42: /* TipSwitch */
464 case 0x43: /* TipSwitch2 */
465 device->quirks &= ~HID_QUIRK_NOTOUCH;
466 map_key_clear(BTN_TOUCH);
467 break;
468
469 case 0x44: /* BarrelSwitch */
470 map_key_clear(BTN_STYLUS);
471 break;
472
473 case 0x46: /* TabletPick */
474 map_key_clear(BTN_STYLUS2);
475 break;
476
477 default: goto unknown;
478 }
479 break;
480
481 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
482 switch (usage->hid & HID_USAGE) {
483 case 0x000: goto ignore;
484 case 0x030: map_key_clear(KEY_POWER); break;
485 case 0x031: map_key_clear(KEY_RESTART); break;
486 case 0x032: map_key_clear(KEY_SLEEP); break;
487 case 0x034: map_key_clear(KEY_SLEEP); break;
488 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
489 case 0x036: map_key_clear(BTN_MISC); break;
490
491 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
492 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
493 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
494 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
495 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
496 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
497 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
498 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
499 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
500
501 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
502 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
503 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
504 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
505 case 0x069: map_key_clear(KEY_RED); break;
506 case 0x06a: map_key_clear(KEY_GREEN); break;
507 case 0x06b: map_key_clear(KEY_BLUE); break;
508 case 0x06c: map_key_clear(KEY_YELLOW); break;
509 case 0x06d: map_key_clear(KEY_ZOOM); break;
510
511 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
512 case 0x083: map_key_clear(KEY_LAST); break;
513 case 0x084: map_key_clear(KEY_ENTER); break;
514 case 0x088: map_key_clear(KEY_PC); break;
515 case 0x089: map_key_clear(KEY_TV); break;
516 case 0x08a: map_key_clear(KEY_WWW); break;
517 case 0x08b: map_key_clear(KEY_DVD); break;
518 case 0x08c: map_key_clear(KEY_PHONE); break;
519 case 0x08d: map_key_clear(KEY_PROGRAM); break;
520 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
521 case 0x08f: map_key_clear(KEY_GAMES); break;
522 case 0x090: map_key_clear(KEY_MEMO); break;
523 case 0x091: map_key_clear(KEY_CD); break;
524 case 0x092: map_key_clear(KEY_VCR); break;
525 case 0x093: map_key_clear(KEY_TUNER); break;
526 case 0x094: map_key_clear(KEY_EXIT); break;
527 case 0x095: map_key_clear(KEY_HELP); break;
528 case 0x096: map_key_clear(KEY_TAPE); break;
529 case 0x097: map_key_clear(KEY_TV2); break;
530 case 0x098: map_key_clear(KEY_SAT); break;
531 case 0x09a: map_key_clear(KEY_PVR); break;
532
533 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
534 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
535 case 0x0a0: map_key_clear(KEY_VCR2); break;
536
537 case 0x0b0: map_key_clear(KEY_PLAY); break;
538 case 0x0b1: map_key_clear(KEY_PAUSE); break;
539 case 0x0b2: map_key_clear(KEY_RECORD); break;
540 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
541 case 0x0b4: map_key_clear(KEY_REWIND); break;
542 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
543 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
544 case 0x0b7: map_key_clear(KEY_STOPCD); break;
545 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
546 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
547 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
548 case 0x0bf: map_key_clear(KEY_SLOW); break;
549
550 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
551 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
552 case 0x0e2: map_key_clear(KEY_MUTE); break;
553 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
554 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
555 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
556 case 0x0f5: map_key_clear(KEY_SLOW); break;
557
558 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
559 case 0x183: map_key_clear(KEY_CONFIG); break;
560 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
561 case 0x185: map_key_clear(KEY_EDITOR); break;
562 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
563 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
564 case 0x188: map_key_clear(KEY_PRESENTATION); break;
565 case 0x189: map_key_clear(KEY_DATABASE); break;
566 case 0x18a: map_key_clear(KEY_MAIL); break;
567 case 0x18b: map_key_clear(KEY_NEWS); break;
568 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
569 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
570 case 0x18e: map_key_clear(KEY_CALENDAR); break;
571 case 0x191: map_key_clear(KEY_FINANCE); break;
572 case 0x192: map_key_clear(KEY_CALC); break;
573 case 0x193: map_key_clear(KEY_PLAYER); break;
574 case 0x194: map_key_clear(KEY_FILE); break;
575 case 0x196: map_key_clear(KEY_WWW); break;
576 case 0x199: map_key_clear(KEY_CHAT); break;
577 case 0x19c: map_key_clear(KEY_LOGOFF); break;
578 case 0x19e: map_key_clear(KEY_COFFEE); break;
579 case 0x1a6: map_key_clear(KEY_HELP); break;
580 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
581 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
582 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
583 case 0x1b6: map_key_clear(KEY_IMAGES); break;
584 case 0x1b7: map_key_clear(KEY_AUDIO); break;
585 case 0x1b8: map_key_clear(KEY_VIDEO); break;
586 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
587 case 0x1bd: map_key_clear(KEY_INFO); break;
588 case 0x201: map_key_clear(KEY_NEW); break;
589 case 0x202: map_key_clear(KEY_OPEN); break;
590 case 0x203: map_key_clear(KEY_CLOSE); break;
591 case 0x204: map_key_clear(KEY_EXIT); break;
592 case 0x207: map_key_clear(KEY_SAVE); break;
593 case 0x208: map_key_clear(KEY_PRINT); break;
594 case 0x209: map_key_clear(KEY_PROPS); break;
595 case 0x21a: map_key_clear(KEY_UNDO); break;
596 case 0x21b: map_key_clear(KEY_COPY); break;
597 case 0x21c: map_key_clear(KEY_CUT); break;
598 case 0x21d: map_key_clear(KEY_PASTE); break;
599 case 0x21f: map_key_clear(KEY_FIND); break;
600 case 0x221: map_key_clear(KEY_SEARCH); break;
601 case 0x222: map_key_clear(KEY_GOTO); break;
602 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
603 case 0x224: map_key_clear(KEY_BACK); break;
604 case 0x225: map_key_clear(KEY_FORWARD); break;
605 case 0x226: map_key_clear(KEY_STOP); break;
606 case 0x227: map_key_clear(KEY_REFRESH); break;
607 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
608 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
609 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
610 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
611 case 0x233: map_key_clear(KEY_SCROLLUP); break;
612 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
613 case 0x238: map_rel(REL_HWHEEL); break;
614 case 0x23d: map_key_clear(KEY_EDIT); break;
615 case 0x25f: map_key_clear(KEY_CANCEL); break;
616 case 0x269: map_key_clear(KEY_INSERT); break;
617 case 0x26a: map_key_clear(KEY_DELETE); break;
618 case 0x279: map_key_clear(KEY_REDO); break;
619
620 case 0x289: map_key_clear(KEY_REPLY); break;
621 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
622 case 0x28c: map_key_clear(KEY_SEND); break;
623
624 default: goto ignore;
625 }
626 break;
627
628 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
629 set_bit(EV_REP, input->evbit);
630 switch (usage->hid & HID_USAGE) {
631 case 0x021: map_key_clear(KEY_PRINT); break;
632 case 0x070: map_key_clear(KEY_HP); break;
633 case 0x071: map_key_clear(KEY_CAMERA); break;
634 case 0x072: map_key_clear(KEY_SOUND); break;
635 case 0x073: map_key_clear(KEY_QUESTION); break;
636 case 0x080: map_key_clear(KEY_EMAIL); break;
637 case 0x081: map_key_clear(KEY_CHAT); break;
638 case 0x082: map_key_clear(KEY_SEARCH); break;
639 case 0x083: map_key_clear(KEY_CONNECT); break;
640 case 0x084: map_key_clear(KEY_FINANCE); break;
641 case 0x085: map_key_clear(KEY_SPORT); break;
642 case 0x086: map_key_clear(KEY_SHOP); break;
643 default: goto ignore;
644 }
645 break;
646
647 case HID_UP_MSVENDOR:
648 goto ignore;
649
650 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
651 set_bit(EV_REP, input->evbit);
652 goto ignore;
653
654 case HID_UP_LOGIVENDOR:
655 goto ignore;
656
657 case HID_UP_PID:
658 switch (usage->hid & HID_USAGE) {
659 case 0xa4: map_key_clear(BTN_DEAD); break;
660 default: goto ignore;
661 }
662 break;
663
664 default:
665 unknown:
666 if (field->report_size == 1) {
667 if (field->report->type == HID_OUTPUT_REPORT) {
668 map_led(LED_MISC);
669 break;
670 }
671 map_key(BTN_MISC);
672 break;
673 }
674 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
675 map_rel(REL_MISC);
676 break;
677 }
678 map_abs(ABS_MISC);
679 break;
680 }
681
682mapped:
683 if (device->driver->input_mapped && device->driver->input_mapped(device,
684 hidinput, field, usage, &bit, &max) < 0)
685 goto ignore;
686
687 set_bit(usage->type, input->evbit);
688
689 while (usage->code <= max && test_and_set_bit(usage->code, bit))
690 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
691
692 if (usage->code > max)
693 goto ignore;
694
695
696 if (usage->type == EV_ABS) {
697
698 int a = field->logical_minimum;
699 int b = field->logical_maximum;
700
701 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
702 a = field->logical_minimum = 0;
703 b = field->logical_maximum = 255;
704 }
705
706 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
707 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
708 else input_set_abs_params(input, usage->code, a, b, 0, 0);
709
710 input_abs_set_res(input, usage->code,
711 hidinput_calc_abs_res(field, usage->code));
712
713 /* use a larger default input buffer for MT devices */
714 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
715 input_set_events_per_packet(input, 60);
716 }
717
718 if (usage->type == EV_ABS &&
719 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
720 int i;
721 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
722 input_set_abs_params(input, i, -1, 1, 0, 0);
723 set_bit(i, input->absbit);
724 }
725 if (usage->hat_dir && !field->dpad)
726 field->dpad = usage->code;
727 }
728
729 /* for those devices which produce Consumer volume usage as relative,
730 * we emulate pressing volumeup/volumedown appropriate number of times
731 * in hidinput_hid_event()
732 */
733 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
734 (usage->code == ABS_VOLUME)) {
735 set_bit(KEY_VOLUMEUP, input->keybit);
736 set_bit(KEY_VOLUMEDOWN, input->keybit);
737 }
738
739 if (usage->type == EV_KEY) {
740 set_bit(EV_MSC, input->evbit);
741 set_bit(MSC_SCAN, input->mscbit);
742 }
743
744ignore:
745 return;
746
747}
748
749void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
750{
751 struct input_dev *input;
752 unsigned *quirks = &hid->quirks;
753
754 if (!field->hidinput)
755 return;
756
757 input = field->hidinput->input;
758
759 if (!usage->type)
760 return;
761
762 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
763 int hat_dir = usage->hat_dir;
764 if (!hat_dir)
765 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
766 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
767 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
768 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
769 return;
770 }
771
772 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
773 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
774 return;
775 }
776
777 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
778 if (value) {
779 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
780 return;
781 }
782 input_event(input, usage->type, usage->code, 0);
783 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
784 return;
785 }
786
787 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
788 int a = field->logical_minimum;
789 int b = field->logical_maximum;
790 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
791 }
792
793 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
794 dbg_hid("Maximum Effects - %d\n",value);
795 return;
796 }
797
798 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
799 dbg_hid("PID Pool Report\n");
800 return;
801 }
802
803 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
804 return;
805
806 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
807 (usage->code == ABS_VOLUME)) {
808 int count = abs(value);
809 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
810 int i;
811
812 for (i = 0; i < count; i++) {
813 input_event(input, EV_KEY, direction, 1);
814 input_sync(input);
815 input_event(input, EV_KEY, direction, 0);
816 input_sync(input);
817 }
818 return;
819 }
820
821 /* report the usage code as scancode if the key status has changed */
822 if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
823 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
824
825 input_event(input, usage->type, usage->code, value);
826
827 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
828 input_event(input, usage->type, usage->code, 0);
829}
830
831void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
832{
833 struct hid_input *hidinput;
834
835 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
836 return;
837
838 list_for_each_entry(hidinput, &hid->inputs, list)
839 input_sync(hidinput->input);
840}
841EXPORT_SYMBOL_GPL(hidinput_report_event);
842
843int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
844{
845 struct hid_report *report;
846 int i, j;
847
848 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
849 for (i = 0; i < report->maxfield; i++) {
850 *field = report->field[i];
851 for (j = 0; j < (*field)->maxusage; j++)
852 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
853 return j;
854 }
855 }
856 return -1;
857}
858EXPORT_SYMBOL_GPL(hidinput_find_field);
859
860static int hidinput_open(struct input_dev *dev)
861{
862 struct hid_device *hid = input_get_drvdata(dev);
863
864 return hid_hw_open(hid);
865}
866
867static void hidinput_close(struct input_dev *dev)
868{
869 struct hid_device *hid = input_get_drvdata(dev);
870
871 hid_hw_close(hid);
872}
873
874static void report_features(struct hid_device *hid)
875{
876 struct hid_driver *drv = hid->driver;
877 struct hid_report_enum *rep_enum;
878 struct hid_report *rep;
879 int i, j;
880
881 if (!drv->feature_mapping)
882 return;
883
884 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
885 list_for_each_entry(rep, &rep_enum->report_list, list)
886 for (i = 0; i < rep->maxfield; i++)
887 for (j = 0; j < rep->field[i]->maxusage; j++)
888 drv->feature_mapping(hid, rep->field[i],
889 rep->field[i]->usage + j);
890}
891
892/*
893 * Register the input device; print a message.
894 * Configure the input layer interface
895 * Read all reports and initialize the absolute field values.
896 */
897
898int hidinput_connect(struct hid_device *hid, unsigned int force)
899{
900 struct hid_report *report;
901 struct hid_input *hidinput = NULL;
902 struct input_dev *input_dev;
903 int i, j, k;
904
905 INIT_LIST_HEAD(&hid->inputs);
906
907 if (!force) {
908 for (i = 0; i < hid->maxcollection; i++) {
909 struct hid_collection *col = &hid->collection[i];
910 if (col->type == HID_COLLECTION_APPLICATION ||
911 col->type == HID_COLLECTION_PHYSICAL)
912 if (IS_INPUT_APPLICATION(col->usage))
913 break;
914 }
915
916 if (i == hid->maxcollection)
917 return -1;
918 }
919
920 report_features(hid);
921
922 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
923 if (k == HID_OUTPUT_REPORT &&
924 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
925 continue;
926
927 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
928
929 if (!report->maxfield)
930 continue;
931
932 if (!hidinput) {
933 hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
934 input_dev = input_allocate_device();
935 if (!hidinput || !input_dev) {
936 kfree(hidinput);
937 input_free_device(input_dev);
938 hid_err(hid, "Out of memory during hid input probe\n");
939 goto out_unwind;
940 }
941
942 input_set_drvdata(input_dev, hid);
943 input_dev->event =
944 hid->ll_driver->hidinput_input_event;
945 input_dev->open = hidinput_open;
946 input_dev->close = hidinput_close;
947 input_dev->setkeycode = hidinput_setkeycode;
948 input_dev->getkeycode = hidinput_getkeycode;
949
950 input_dev->name = hid->name;
951 input_dev->phys = hid->phys;
952 input_dev->uniq = hid->uniq;
953 input_dev->id.bustype = hid->bus;
954 input_dev->id.vendor = hid->vendor;
955 input_dev->id.product = hid->product;
956 input_dev->id.version = hid->version;
957 input_dev->dev.parent = hid->dev.parent;
958 hidinput->input = input_dev;
959 list_add_tail(&hidinput->list, &hid->inputs);
960 }
961
962 for (i = 0; i < report->maxfield; i++)
963 for (j = 0; j < report->field[i]->maxusage; j++)
964 hidinput_configure_usage(hidinput, report->field[i],
965 report->field[i]->usage + j);
966
967 if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
968 /* This will leave hidinput NULL, so that it
969 * allocates another one if we have more inputs on
970 * the same interface. Some devices (e.g. Happ's
971 * UGCI) cram a lot of unrelated inputs into the
972 * same interface. */
973 hidinput->report = report;
974 if (input_register_device(hidinput->input))
975 goto out_cleanup;
976 hidinput = NULL;
977 }
978 }
979 }
980
981 if (hidinput && input_register_device(hidinput->input))
982 goto out_cleanup;
983
984 return 0;
985
986out_cleanup:
987 list_del(&hidinput->list);
988 input_free_device(hidinput->input);
989 kfree(hidinput);
990out_unwind:
991 /* unwind the ones we already registered */
992 hidinput_disconnect(hid);
993
994 return -1;
995}
996EXPORT_SYMBOL_GPL(hidinput_connect);
997
998void hidinput_disconnect(struct hid_device *hid)
999{
1000 struct hid_input *hidinput, *next;
1001
1002 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1003 list_del(&hidinput->list);
1004 input_unregister_device(hidinput->input);
1005 kfree(hidinput);
1006 }
1007}
1008EXPORT_SYMBOL_GPL(hidinput_disconnect);
1009
1// SPDX-License-Identifier: GPL-2.0-or-later
2/*
3 * Copyright (c) 2000-2001 Vojtech Pavlik
4 * Copyright (c) 2006-2010 Jiri Kosina
5 *
6 * HID to Linux Input mapping
7 */
8
9/*
10 *
11 * Should you need to contact me, the author, you can do so either by
12 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
13 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
14 */
15
16#include <linux/module.h>
17#include <linux/slab.h>
18#include <linux/kernel.h>
19
20#include <linux/hid.h>
21#include <linux/hid-debug.h>
22
23#include "hid-ids.h"
24
25#define unk KEY_UNKNOWN
26
27static const unsigned char hid_keyboard[256] = {
28 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
29 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
30 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
31 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
32 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
33 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
34 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
35 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
36 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
37 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,
38 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
39 unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk,
40 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
41 unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk,
42 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
43 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
44};
45
46static const struct {
47 __s32 x;
48 __s32 y;
49} hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
50
51struct usage_priority {
52 __u32 usage; /* the HID usage associated */
53 bool global; /* we assume all usages to be slotted,
54 * unless global
55 */
56 unsigned int slot_overwrite; /* for globals: allows to set the usage
57 * before or after the slots
58 */
59};
60
61/*
62 * hid-input will convert this list into priorities:
63 * the first element will have the highest priority
64 * (the length of the following array) and the last
65 * element the lowest (1).
66 *
67 * hid-input will then shift the priority by 8 bits to leave some space
68 * in case drivers want to interleave other fields.
69 *
70 * To accommodate slotted devices, the slot priority is
71 * defined in the next 8 bits (defined by 0xff - slot).
72 *
73 * If drivers want to add fields before those, hid-input will
74 * leave out the first 8 bits of the priority value.
75 *
76 * This still leaves us 65535 individual priority values.
77 */
78static const struct usage_priority hidinput_usages_priorities[] = {
79 { /* Eraser (eraser touching) must always come before tipswitch */
80 .usage = HID_DG_ERASER,
81 },
82 { /* Invert must always come before In Range */
83 .usage = HID_DG_INVERT,
84 },
85 { /* Is the tip of the tool touching? */
86 .usage = HID_DG_TIPSWITCH,
87 },
88 { /* Tip Pressure might emulate tip switch */
89 .usage = HID_DG_TIPPRESSURE,
90 },
91 { /* In Range needs to come after the other tool states */
92 .usage = HID_DG_INRANGE,
93 },
94};
95
96#define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
97#define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
98#define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
99#define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
100#define map_msc(c) hid_map_usage(hidinput, usage, &bit, &max, EV_MSC, (c))
101
102#define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
103 &max, EV_ABS, (c))
104#define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
105 &max, EV_KEY, (c))
106
107static bool match_scancode(struct hid_usage *usage,
108 unsigned int cur_idx, unsigned int scancode)
109{
110 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
111}
112
113static bool match_keycode(struct hid_usage *usage,
114 unsigned int cur_idx, unsigned int keycode)
115{
116 /*
117 * We should exclude unmapped usages when doing lookup by keycode.
118 */
119 return (usage->type == EV_KEY && usage->code == keycode);
120}
121
122static bool match_index(struct hid_usage *usage,
123 unsigned int cur_idx, unsigned int idx)
124{
125 return cur_idx == idx;
126}
127
128typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
129 unsigned int cur_idx, unsigned int val);
130
131static struct hid_usage *hidinput_find_key(struct hid_device *hid,
132 hid_usage_cmp_t match,
133 unsigned int value,
134 unsigned int *usage_idx)
135{
136 unsigned int i, j, k, cur_idx = 0;
137 struct hid_report *report;
138 struct hid_usage *usage;
139
140 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
141 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
142 for (i = 0; i < report->maxfield; i++) {
143 for (j = 0; j < report->field[i]->maxusage; j++) {
144 usage = report->field[i]->usage + j;
145 if (usage->type == EV_KEY || usage->type == 0) {
146 if (match(usage, cur_idx, value)) {
147 if (usage_idx)
148 *usage_idx = cur_idx;
149 return usage;
150 }
151 cur_idx++;
152 }
153 }
154 }
155 }
156 }
157 return NULL;
158}
159
160static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
161 const struct input_keymap_entry *ke,
162 unsigned int *index)
163{
164 struct hid_usage *usage;
165 unsigned int scancode;
166
167 if (ke->flags & INPUT_KEYMAP_BY_INDEX)
168 usage = hidinput_find_key(hid, match_index, ke->index, index);
169 else if (input_scancode_to_scalar(ke, &scancode) == 0)
170 usage = hidinput_find_key(hid, match_scancode, scancode, index);
171 else
172 usage = NULL;
173
174 return usage;
175}
176
177static int hidinput_getkeycode(struct input_dev *dev,
178 struct input_keymap_entry *ke)
179{
180 struct hid_device *hid = input_get_drvdata(dev);
181 struct hid_usage *usage;
182 unsigned int scancode, index;
183
184 usage = hidinput_locate_usage(hid, ke, &index);
185 if (usage) {
186 ke->keycode = usage->type == EV_KEY ?
187 usage->code : KEY_RESERVED;
188 ke->index = index;
189 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
190 ke->len = sizeof(scancode);
191 memcpy(ke->scancode, &scancode, sizeof(scancode));
192 return 0;
193 }
194
195 return -EINVAL;
196}
197
198static int hidinput_setkeycode(struct input_dev *dev,
199 const struct input_keymap_entry *ke,
200 unsigned int *old_keycode)
201{
202 struct hid_device *hid = input_get_drvdata(dev);
203 struct hid_usage *usage;
204
205 usage = hidinput_locate_usage(hid, ke, NULL);
206 if (usage) {
207 *old_keycode = usage->type == EV_KEY ?
208 usage->code : KEY_RESERVED;
209 usage->type = EV_KEY;
210 usage->code = ke->keycode;
211
212 clear_bit(*old_keycode, dev->keybit);
213 set_bit(usage->code, dev->keybit);
214 dbg_hid("Assigned keycode %d to HID usage code %x\n",
215 usage->code, usage->hid);
216
217 /*
218 * Set the keybit for the old keycode if the old keycode is used
219 * by another key
220 */
221 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
222 set_bit(*old_keycode, dev->keybit);
223
224 return 0;
225 }
226
227 return -EINVAL;
228}
229
230
231/**
232 * hidinput_calc_abs_res - calculate an absolute axis resolution
233 * @field: the HID report field to calculate resolution for
234 * @code: axis code
235 *
236 * The formula is:
237 * (logical_maximum - logical_minimum)
238 * resolution = ----------------------------------------------------------
239 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent
240 *
241 * as seen in the HID specification v1.11 6.2.2.7 Global Items.
242 *
243 * Only exponent 1 length units are processed. Centimeters and inches are
244 * converted to millimeters. Degrees are converted to radians.
245 */
246__s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
247{
248 __s32 unit_exponent = field->unit_exponent;
249 __s32 logical_extents = field->logical_maximum -
250 field->logical_minimum;
251 __s32 physical_extents = field->physical_maximum -
252 field->physical_minimum;
253 __s32 prev;
254
255 /* Check if the extents are sane */
256 if (logical_extents <= 0 || physical_extents <= 0)
257 return 0;
258
259 /*
260 * Verify and convert units.
261 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
262 */
263 switch (code) {
264 case ABS_X:
265 case ABS_Y:
266 case ABS_Z:
267 case ABS_MT_POSITION_X:
268 case ABS_MT_POSITION_Y:
269 case ABS_MT_TOOL_X:
270 case ABS_MT_TOOL_Y:
271 case ABS_MT_TOUCH_MAJOR:
272 case ABS_MT_TOUCH_MINOR:
273 if (field->unit == 0x11) { /* If centimeters */
274 /* Convert to millimeters */
275 unit_exponent += 1;
276 } else if (field->unit == 0x13) { /* If inches */
277 /* Convert to millimeters */
278 prev = physical_extents;
279 physical_extents *= 254;
280 if (physical_extents < prev)
281 return 0;
282 unit_exponent -= 1;
283 } else {
284 return 0;
285 }
286 break;
287
288 case ABS_RX:
289 case ABS_RY:
290 case ABS_RZ:
291 case ABS_WHEEL:
292 case ABS_TILT_X:
293 case ABS_TILT_Y:
294 if (field->unit == 0x14) { /* If degrees */
295 /* Convert to radians */
296 prev = logical_extents;
297 logical_extents *= 573;
298 if (logical_extents < prev)
299 return 0;
300 unit_exponent += 1;
301 } else if (field->unit != 0x12) { /* If not radians */
302 return 0;
303 }
304 break;
305
306 default:
307 return 0;
308 }
309
310 /* Apply negative unit exponent */
311 for (; unit_exponent < 0; unit_exponent++) {
312 prev = logical_extents;
313 logical_extents *= 10;
314 if (logical_extents < prev)
315 return 0;
316 }
317 /* Apply positive unit exponent */
318 for (; unit_exponent > 0; unit_exponent--) {
319 prev = physical_extents;
320 physical_extents *= 10;
321 if (physical_extents < prev)
322 return 0;
323 }
324
325 /* Calculate resolution */
326 return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
327}
328EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
329
330#ifdef CONFIG_HID_BATTERY_STRENGTH
331static enum power_supply_property hidinput_battery_props[] = {
332 POWER_SUPPLY_PROP_PRESENT,
333 POWER_SUPPLY_PROP_ONLINE,
334 POWER_SUPPLY_PROP_CAPACITY,
335 POWER_SUPPLY_PROP_MODEL_NAME,
336 POWER_SUPPLY_PROP_STATUS,
337 POWER_SUPPLY_PROP_SCOPE,
338};
339
340#define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
341#define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
342#define HID_BATTERY_QUIRK_IGNORE (1 << 2) /* completely ignore the battery */
343#define HID_BATTERY_QUIRK_AVOID_QUERY (1 << 3) /* do not query the battery */
344
345static const struct hid_device_id hid_battery_quirks[] = {
346 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
347 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
348 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
349 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
350 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
351 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
352 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
353 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
354 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
355 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
356 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO),
357 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
358 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
359 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
360 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
361 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM,
362 USB_DEVICE_ID_ELECOM_BM084),
363 HID_BATTERY_QUIRK_IGNORE },
364 { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL,
365 USB_DEVICE_ID_SYMBOL_SCANNER_3),
366 HID_BATTERY_QUIRK_IGNORE },
367 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
368 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD),
369 HID_BATTERY_QUIRK_IGNORE },
370 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
371 USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD),
372 HID_BATTERY_QUIRK_IGNORE },
373 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_ASUS_TP420IA_TOUCHSCREEN),
374 HID_BATTERY_QUIRK_IGNORE },
375 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN),
376 HID_BATTERY_QUIRK_IGNORE },
377 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN),
378 HID_BATTERY_QUIRK_IGNORE },
379 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_L),
380 HID_BATTERY_QUIRK_AVOID_QUERY },
381 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15),
382 HID_BATTERY_QUIRK_IGNORE },
383 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_15T_DR100),
384 HID_BATTERY_QUIRK_IGNORE },
385 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_ENVY_X360_EU0009NV),
386 HID_BATTERY_QUIRK_IGNORE },
387 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_15),
388 HID_BATTERY_QUIRK_IGNORE },
389 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_HP_SPECTRE_X360_13_AW0020NG),
390 HID_BATTERY_QUIRK_IGNORE },
391 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO_TOUCHSCREEN),
392 HID_BATTERY_QUIRK_IGNORE },
393 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_SURFACE_GO2_TOUCHSCREEN),
394 HID_BATTERY_QUIRK_IGNORE },
395 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_LENOVO_YOGA_C630_TOUCHSCREEN),
396 HID_BATTERY_QUIRK_IGNORE },
397 {}
398};
399
400static unsigned find_battery_quirk(struct hid_device *hdev)
401{
402 unsigned quirks = 0;
403 const struct hid_device_id *match;
404
405 match = hid_match_id(hdev, hid_battery_quirks);
406 if (match != NULL)
407 quirks = match->driver_data;
408
409 return quirks;
410}
411
412static int hidinput_scale_battery_capacity(struct hid_device *dev,
413 int value)
414{
415 if (dev->battery_min < dev->battery_max &&
416 value >= dev->battery_min && value <= dev->battery_max)
417 value = ((value - dev->battery_min) * 100) /
418 (dev->battery_max - dev->battery_min);
419
420 return value;
421}
422
423static int hidinput_query_battery_capacity(struct hid_device *dev)
424{
425 u8 *buf;
426 int ret;
427
428 buf = kmalloc(4, GFP_KERNEL);
429 if (!buf)
430 return -ENOMEM;
431
432 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4,
433 dev->battery_report_type, HID_REQ_GET_REPORT);
434 if (ret < 2) {
435 kfree(buf);
436 return -ENODATA;
437 }
438
439 ret = hidinput_scale_battery_capacity(dev, buf[1]);
440 kfree(buf);
441 return ret;
442}
443
444static int hidinput_get_battery_property(struct power_supply *psy,
445 enum power_supply_property prop,
446 union power_supply_propval *val)
447{
448 struct hid_device *dev = power_supply_get_drvdata(psy);
449 int value;
450 int ret = 0;
451
452 switch (prop) {
453 case POWER_SUPPLY_PROP_PRESENT:
454 case POWER_SUPPLY_PROP_ONLINE:
455 val->intval = 1;
456 break;
457
458 case POWER_SUPPLY_PROP_CAPACITY:
459 if (dev->battery_status != HID_BATTERY_REPORTED &&
460 !dev->battery_avoid_query) {
461 value = hidinput_query_battery_capacity(dev);
462 if (value < 0)
463 return value;
464 } else {
465 value = dev->battery_capacity;
466 }
467
468 val->intval = value;
469 break;
470
471 case POWER_SUPPLY_PROP_MODEL_NAME:
472 val->strval = dev->name;
473 break;
474
475 case POWER_SUPPLY_PROP_STATUS:
476 if (dev->battery_status != HID_BATTERY_REPORTED &&
477 !dev->battery_avoid_query) {
478 value = hidinput_query_battery_capacity(dev);
479 if (value < 0)
480 return value;
481
482 dev->battery_capacity = value;
483 dev->battery_status = HID_BATTERY_QUERIED;
484 }
485
486 if (dev->battery_status == HID_BATTERY_UNKNOWN)
487 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
488 else
489 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
490 break;
491
492 case POWER_SUPPLY_PROP_SCOPE:
493 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
494 break;
495
496 default:
497 ret = -EINVAL;
498 break;
499 }
500
501 return ret;
502}
503
504static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
505 struct hid_field *field, bool is_percentage)
506{
507 struct power_supply_desc *psy_desc;
508 struct power_supply_config psy_cfg = { .drv_data = dev, };
509 unsigned quirks;
510 s32 min, max;
511 int error;
512
513 if (dev->battery)
514 return 0; /* already initialized? */
515
516 quirks = find_battery_quirk(dev);
517
518 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
519 dev->bus, dev->vendor, dev->product, dev->version, quirks);
520
521 if (quirks & HID_BATTERY_QUIRK_IGNORE)
522 return 0;
523
524 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
525 if (!psy_desc)
526 return -ENOMEM;
527
528 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery",
529 strlen(dev->uniq) ?
530 dev->uniq : dev_name(&dev->dev));
531 if (!psy_desc->name) {
532 error = -ENOMEM;
533 goto err_free_mem;
534 }
535
536 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
537 psy_desc->properties = hidinput_battery_props;
538 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
539 psy_desc->use_for_apm = 0;
540 psy_desc->get_property = hidinput_get_battery_property;
541
542 min = field->logical_minimum;
543 max = field->logical_maximum;
544
545 if (is_percentage || (quirks & HID_BATTERY_QUIRK_PERCENT)) {
546 min = 0;
547 max = 100;
548 }
549
550 if (quirks & HID_BATTERY_QUIRK_FEATURE)
551 report_type = HID_FEATURE_REPORT;
552
553 dev->battery_min = min;
554 dev->battery_max = max;
555 dev->battery_report_type = report_type;
556 dev->battery_report_id = field->report->id;
557
558 /*
559 * Stylus is normally not connected to the device and thus we
560 * can't query the device and get meaningful battery strength.
561 * We have to wait for the device to report it on its own.
562 */
563 dev->battery_avoid_query = report_type == HID_INPUT_REPORT &&
564 field->physical == HID_DG_STYLUS;
565
566 if (quirks & HID_BATTERY_QUIRK_AVOID_QUERY)
567 dev->battery_avoid_query = true;
568
569 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
570 if (IS_ERR(dev->battery)) {
571 error = PTR_ERR(dev->battery);
572 hid_warn(dev, "can't register power supply: %d\n", error);
573 goto err_free_name;
574 }
575
576 power_supply_powers(dev->battery, &dev->dev);
577 return 0;
578
579err_free_name:
580 kfree(psy_desc->name);
581err_free_mem:
582 kfree(psy_desc);
583 dev->battery = NULL;
584 return error;
585}
586
587static void hidinput_cleanup_battery(struct hid_device *dev)
588{
589 const struct power_supply_desc *psy_desc;
590
591 if (!dev->battery)
592 return;
593
594 psy_desc = dev->battery->desc;
595 power_supply_unregister(dev->battery);
596 kfree(psy_desc->name);
597 kfree(psy_desc);
598 dev->battery = NULL;
599}
600
601static void hidinput_update_battery(struct hid_device *dev, int value)
602{
603 int capacity;
604
605 if (!dev->battery)
606 return;
607
608 if (value == 0 || value < dev->battery_min || value > dev->battery_max)
609 return;
610
611 capacity = hidinput_scale_battery_capacity(dev, value);
612
613 if (dev->battery_status != HID_BATTERY_REPORTED ||
614 capacity != dev->battery_capacity ||
615 ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) {
616 dev->battery_capacity = capacity;
617 dev->battery_status = HID_BATTERY_REPORTED;
618 dev->battery_ratelimit_time =
619 ktime_add_ms(ktime_get_coarse(), 30 * 1000);
620 power_supply_changed(dev->battery);
621 }
622}
623#else /* !CONFIG_HID_BATTERY_STRENGTH */
624static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
625 struct hid_field *field, bool is_percentage)
626{
627 return 0;
628}
629
630static void hidinput_cleanup_battery(struct hid_device *dev)
631{
632}
633
634static void hidinput_update_battery(struct hid_device *dev, int value)
635{
636}
637#endif /* CONFIG_HID_BATTERY_STRENGTH */
638
639static bool hidinput_field_in_collection(struct hid_device *device, struct hid_field *field,
640 unsigned int type, unsigned int usage)
641{
642 struct hid_collection *collection;
643
644 collection = &device->collection[field->usage->collection_index];
645
646 return collection->type == type && collection->usage == usage;
647}
648
649static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
650 struct hid_usage *usage, unsigned int usage_index)
651{
652 struct input_dev *input = hidinput->input;
653 struct hid_device *device = input_get_drvdata(input);
654 const struct usage_priority *usage_priority = NULL;
655 int max = 0, code;
656 unsigned int i = 0;
657 unsigned long *bit = NULL;
658
659 field->hidinput = hidinput;
660
661 if (field->flags & HID_MAIN_ITEM_CONSTANT)
662 goto ignore;
663
664 /* Ignore if report count is out of bounds. */
665 if (field->report_count < 1)
666 goto ignore;
667
668 /* only LED usages are supported in output fields */
669 if (field->report_type == HID_OUTPUT_REPORT &&
670 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
671 goto ignore;
672 }
673
674 /* assign a priority based on the static list declared here */
675 for (i = 0; i < ARRAY_SIZE(hidinput_usages_priorities); i++) {
676 if (usage->hid == hidinput_usages_priorities[i].usage) {
677 usage_priority = &hidinput_usages_priorities[i];
678
679 field->usages_priorities[usage_index] =
680 (ARRAY_SIZE(hidinput_usages_priorities) - i) << 8;
681 break;
682 }
683 }
684
685 /*
686 * For slotted devices, we need to also add the slot index
687 * in the priority.
688 */
689 if (usage_priority && usage_priority->global)
690 field->usages_priorities[usage_index] |=
691 usage_priority->slot_overwrite;
692 else
693 field->usages_priorities[usage_index] |=
694 (0xff - field->slot_idx) << 16;
695
696 if (device->driver->input_mapping) {
697 int ret = device->driver->input_mapping(device, hidinput, field,
698 usage, &bit, &max);
699 if (ret > 0)
700 goto mapped;
701 if (ret < 0)
702 goto ignore;
703 }
704
705 switch (usage->hid & HID_USAGE_PAGE) {
706 case HID_UP_UNDEFINED:
707 goto ignore;
708
709 case HID_UP_KEYBOARD:
710 set_bit(EV_REP, input->evbit);
711
712 if ((usage->hid & HID_USAGE) < 256) {
713 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
714 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
715 } else
716 map_key(KEY_UNKNOWN);
717
718 break;
719
720 case HID_UP_BUTTON:
721 code = ((usage->hid - 1) & HID_USAGE);
722
723 switch (field->application) {
724 case HID_GD_MOUSE:
725 case HID_GD_POINTER: code += BTN_MOUSE; break;
726 case HID_GD_JOYSTICK:
727 if (code <= 0xf)
728 code += BTN_JOYSTICK;
729 else
730 code += BTN_TRIGGER_HAPPY - 0x10;
731 break;
732 case HID_GD_GAMEPAD:
733 if (code <= 0xf)
734 code += BTN_GAMEPAD;
735 else
736 code += BTN_TRIGGER_HAPPY - 0x10;
737 break;
738 case HID_CP_CONSUMER_CONTROL:
739 if (hidinput_field_in_collection(device, field,
740 HID_COLLECTION_NAMED_ARRAY,
741 HID_CP_PROGRAMMABLEBUTTONS)) {
742 if (code <= 0x1d)
743 code += KEY_MACRO1;
744 else
745 code += BTN_TRIGGER_HAPPY - 0x1e;
746 break;
747 }
748 fallthrough;
749 default:
750 switch (field->physical) {
751 case HID_GD_MOUSE:
752 case HID_GD_POINTER: code += BTN_MOUSE; break;
753 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
754 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
755 default: code += BTN_MISC;
756 }
757 }
758
759 map_key(code);
760 break;
761
762 case HID_UP_SIMULATION:
763 switch (usage->hid & 0xffff) {
764 case 0xba: map_abs(ABS_RUDDER); break;
765 case 0xbb: map_abs(ABS_THROTTLE); break;
766 case 0xc4: map_abs(ABS_GAS); break;
767 case 0xc5: map_abs(ABS_BRAKE); break;
768 case 0xc8: map_abs(ABS_WHEEL); break;
769 default: goto ignore;
770 }
771 break;
772
773 case HID_UP_GENDESK:
774 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
775 switch (usage->hid & 0xf) {
776 case 0x1: map_key_clear(KEY_POWER); break;
777 case 0x2: map_key_clear(KEY_SLEEP); break;
778 case 0x3: map_key_clear(KEY_WAKEUP); break;
779 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
780 case 0x5: map_key_clear(KEY_MENU); break;
781 case 0x6: map_key_clear(KEY_PROG1); break;
782 case 0x7: map_key_clear(KEY_HELP); break;
783 case 0x8: map_key_clear(KEY_EXIT); break;
784 case 0x9: map_key_clear(KEY_SELECT); break;
785 case 0xa: map_key_clear(KEY_RIGHT); break;
786 case 0xb: map_key_clear(KEY_LEFT); break;
787 case 0xc: map_key_clear(KEY_UP); break;
788 case 0xd: map_key_clear(KEY_DOWN); break;
789 case 0xe: map_key_clear(KEY_POWER2); break;
790 case 0xf: map_key_clear(KEY_RESTART); break;
791 default: goto unknown;
792 }
793 break;
794 }
795
796 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */
797 switch (usage->hid & 0xf) {
798 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break;
799 default: goto ignore;
800 }
801 break;
802 }
803
804 /*
805 * Some lazy vendors declare 255 usages for System Control,
806 * leading to the creation of ABS_X|Y axis and too many others.
807 * It wouldn't be a problem if joydev doesn't consider the
808 * device as a joystick then.
809 */
810 if (field->application == HID_GD_SYSTEM_CONTROL)
811 goto ignore;
812
813 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
814 switch (usage->hid) {
815 case HID_GD_UP: usage->hat_dir = 1; break;
816 case HID_GD_DOWN: usage->hat_dir = 5; break;
817 case HID_GD_RIGHT: usage->hat_dir = 3; break;
818 case HID_GD_LEFT: usage->hat_dir = 7; break;
819 default: goto unknown;
820 }
821 if (field->dpad) {
822 map_abs(field->dpad);
823 goto ignore;
824 }
825 map_abs(ABS_HAT0X);
826 break;
827 }
828
829 switch (usage->hid) {
830 /* These usage IDs map directly to the usage codes. */
831 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
832 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
833 if (field->flags & HID_MAIN_ITEM_RELATIVE)
834 map_rel(usage->hid & 0xf);
835 else
836 map_abs_clear(usage->hid & 0xf);
837 break;
838
839 case HID_GD_WHEEL:
840 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
841 set_bit(REL_WHEEL, input->relbit);
842 map_rel(REL_WHEEL_HI_RES);
843 } else {
844 map_abs(usage->hid & 0xf);
845 }
846 break;
847 case HID_GD_SLIDER: case HID_GD_DIAL:
848 if (field->flags & HID_MAIN_ITEM_RELATIVE)
849 map_rel(usage->hid & 0xf);
850 else
851 map_abs(usage->hid & 0xf);
852 break;
853
854 case HID_GD_HATSWITCH:
855 usage->hat_min = field->logical_minimum;
856 usage->hat_max = field->logical_maximum;
857 map_abs(ABS_HAT0X);
858 break;
859
860 case HID_GD_START: map_key_clear(BTN_START); break;
861 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
862
863 case HID_GD_RFKILL_BTN:
864 /* MS wireless radio ctl extension, also check CA */
865 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
866 map_key_clear(KEY_RFKILL);
867 /* We need to simulate the btn release */
868 field->flags |= HID_MAIN_ITEM_RELATIVE;
869 break;
870 }
871 goto unknown;
872
873 default: goto unknown;
874 }
875
876 break;
877
878 case HID_UP_LED:
879 switch (usage->hid & 0xffff) { /* HID-Value: */
880 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
881 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
882 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
883 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
884 case 0x05: map_led (LED_KANA); break; /* "Kana" */
885 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
886 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
887 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
888 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
889 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
890 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
891
892 default: goto ignore;
893 }
894 break;
895
896 case HID_UP_DIGITIZER:
897 if ((field->application & 0xff) == 0x01) /* Digitizer */
898 __set_bit(INPUT_PROP_POINTER, input->propbit);
899 else if ((field->application & 0xff) == 0x02) /* Pen */
900 __set_bit(INPUT_PROP_DIRECT, input->propbit);
901
902 switch (usage->hid & 0xff) {
903 case 0x00: /* Undefined */
904 goto ignore;
905
906 case 0x30: /* TipPressure */
907 if (!test_bit(BTN_TOUCH, input->keybit)) {
908 device->quirks |= HID_QUIRK_NOTOUCH;
909 set_bit(EV_KEY, input->evbit);
910 set_bit(BTN_TOUCH, input->keybit);
911 }
912 map_abs_clear(ABS_PRESSURE);
913 break;
914
915 case 0x32: /* InRange */
916 switch (field->physical) {
917 case HID_DG_PUCK:
918 map_key(BTN_TOOL_MOUSE);
919 break;
920 case HID_DG_FINGER:
921 map_key(BTN_TOOL_FINGER);
922 break;
923 default:
924 /*
925 * If the physical is not given,
926 * rely on the application.
927 */
928 if (!field->physical) {
929 switch (field->application) {
930 case HID_DG_TOUCHSCREEN:
931 case HID_DG_TOUCHPAD:
932 map_key_clear(BTN_TOOL_FINGER);
933 break;
934 default:
935 map_key_clear(BTN_TOOL_PEN);
936 }
937 } else {
938 map_key(BTN_TOOL_PEN);
939 }
940 break;
941 }
942 break;
943
944 case 0x3b: /* Battery Strength */
945 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false);
946 usage->type = EV_PWR;
947 return;
948
949 case 0x3c: /* Invert */
950 map_key_clear(BTN_TOOL_RUBBER);
951 break;
952
953 case 0x3d: /* X Tilt */
954 map_abs_clear(ABS_TILT_X);
955 break;
956
957 case 0x3e: /* Y Tilt */
958 map_abs_clear(ABS_TILT_Y);
959 break;
960
961 case 0x33: /* Touch */
962 case 0x42: /* TipSwitch */
963 case 0x43: /* TipSwitch2 */
964 device->quirks &= ~HID_QUIRK_NOTOUCH;
965 map_key_clear(BTN_TOUCH);
966 break;
967
968 case 0x44: /* BarrelSwitch */
969 map_key_clear(BTN_STYLUS);
970 break;
971
972 case 0x45: /* ERASER */
973 /*
974 * This event is reported when eraser tip touches the surface.
975 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when
976 * tool gets in proximity.
977 */
978 map_key_clear(BTN_TOUCH);
979 break;
980
981 case 0x46: /* TabletPick */
982 case 0x5a: /* SecondaryBarrelSwitch */
983 map_key_clear(BTN_STYLUS2);
984 break;
985
986 case 0x5b: /* TransducerSerialNumber */
987 case 0x6e: /* TransducerSerialNumber2 */
988 map_msc(MSC_SERIAL);
989 break;
990
991 default: goto unknown;
992 }
993 break;
994
995 case HID_UP_TELEPHONY:
996 switch (usage->hid & HID_USAGE) {
997 case 0x2f: map_key_clear(KEY_MICMUTE); break;
998 case 0xb0: map_key_clear(KEY_NUMERIC_0); break;
999 case 0xb1: map_key_clear(KEY_NUMERIC_1); break;
1000 case 0xb2: map_key_clear(KEY_NUMERIC_2); break;
1001 case 0xb3: map_key_clear(KEY_NUMERIC_3); break;
1002 case 0xb4: map_key_clear(KEY_NUMERIC_4); break;
1003 case 0xb5: map_key_clear(KEY_NUMERIC_5); break;
1004 case 0xb6: map_key_clear(KEY_NUMERIC_6); break;
1005 case 0xb7: map_key_clear(KEY_NUMERIC_7); break;
1006 case 0xb8: map_key_clear(KEY_NUMERIC_8); break;
1007 case 0xb9: map_key_clear(KEY_NUMERIC_9); break;
1008 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;
1009 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;
1010 case 0xbc: map_key_clear(KEY_NUMERIC_A); break;
1011 case 0xbd: map_key_clear(KEY_NUMERIC_B); break;
1012 case 0xbe: map_key_clear(KEY_NUMERIC_C); break;
1013 case 0xbf: map_key_clear(KEY_NUMERIC_D); break;
1014 default: goto ignore;
1015 }
1016 break;
1017
1018 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
1019 switch (usage->hid & HID_USAGE) {
1020 case 0x000: goto ignore;
1021 case 0x030: map_key_clear(KEY_POWER); break;
1022 case 0x031: map_key_clear(KEY_RESTART); break;
1023 case 0x032: map_key_clear(KEY_SLEEP); break;
1024 case 0x034: map_key_clear(KEY_SLEEP); break;
1025 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
1026 case 0x036: map_key_clear(BTN_MISC); break;
1027
1028 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
1029 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
1030 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
1031 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
1032 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
1033 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
1034 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
1035 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
1036 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
1037
1038 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
1039 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
1040 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
1041 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
1042 case 0x069: map_key_clear(KEY_RED); break;
1043 case 0x06a: map_key_clear(KEY_GREEN); break;
1044 case 0x06b: map_key_clear(KEY_BLUE); break;
1045 case 0x06c: map_key_clear(KEY_YELLOW); break;
1046 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break;
1047
1048 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
1049 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1050 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
1051 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
1052 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
1053 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
1054
1055 case 0x079: map_key_clear(KEY_KBDILLUMUP); break;
1056 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break;
1057 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break;
1058
1059 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
1060 case 0x083: map_key_clear(KEY_LAST); break;
1061 case 0x084: map_key_clear(KEY_ENTER); break;
1062 case 0x088: map_key_clear(KEY_PC); break;
1063 case 0x089: map_key_clear(KEY_TV); break;
1064 case 0x08a: map_key_clear(KEY_WWW); break;
1065 case 0x08b: map_key_clear(KEY_DVD); break;
1066 case 0x08c: map_key_clear(KEY_PHONE); break;
1067 case 0x08d: map_key_clear(KEY_PROGRAM); break;
1068 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
1069 case 0x08f: map_key_clear(KEY_GAMES); break;
1070 case 0x090: map_key_clear(KEY_MEMO); break;
1071 case 0x091: map_key_clear(KEY_CD); break;
1072 case 0x092: map_key_clear(KEY_VCR); break;
1073 case 0x093: map_key_clear(KEY_TUNER); break;
1074 case 0x094: map_key_clear(KEY_EXIT); break;
1075 case 0x095: map_key_clear(KEY_HELP); break;
1076 case 0x096: map_key_clear(KEY_TAPE); break;
1077 case 0x097: map_key_clear(KEY_TV2); break;
1078 case 0x098: map_key_clear(KEY_SAT); break;
1079 case 0x09a: map_key_clear(KEY_PVR); break;
1080
1081 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
1082 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
1083 case 0x0a0: map_key_clear(KEY_VCR2); break;
1084
1085 case 0x0b0: map_key_clear(KEY_PLAY); break;
1086 case 0x0b1: map_key_clear(KEY_PAUSE); break;
1087 case 0x0b2: map_key_clear(KEY_RECORD); break;
1088 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
1089 case 0x0b4: map_key_clear(KEY_REWIND); break;
1090 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
1091 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
1092 case 0x0b7: map_key_clear(KEY_STOPCD); break;
1093 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
1094 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
1095 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
1096 case 0x0bf: map_key_clear(KEY_SLOW); break;
1097
1098 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
1099 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
1100
1101 case 0x0d5: map_key_clear(KEY_CAMERA_ACCESS_ENABLE); break;
1102 case 0x0d6: map_key_clear(KEY_CAMERA_ACCESS_DISABLE); break;
1103 case 0x0d7: map_key_clear(KEY_CAMERA_ACCESS_TOGGLE); break;
1104 case 0x0d8: map_key_clear(KEY_DICTATE); break;
1105 case 0x0d9: map_key_clear(KEY_EMOJI_PICKER); break;
1106
1107 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
1108 case 0x0e2: map_key_clear(KEY_MUTE); break;
1109 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
1110 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
1111 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
1112 case 0x0f5: map_key_clear(KEY_SLOW); break;
1113
1114 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
1115 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
1116 case 0x183: map_key_clear(KEY_CONFIG); break;
1117 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
1118 case 0x185: map_key_clear(KEY_EDITOR); break;
1119 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
1120 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
1121 case 0x188: map_key_clear(KEY_PRESENTATION); break;
1122 case 0x189: map_key_clear(KEY_DATABASE); break;
1123 case 0x18a: map_key_clear(KEY_MAIL); break;
1124 case 0x18b: map_key_clear(KEY_NEWS); break;
1125 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
1126 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
1127 case 0x18e: map_key_clear(KEY_CALENDAR); break;
1128 case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
1129 case 0x190: map_key_clear(KEY_JOURNAL); break;
1130 case 0x191: map_key_clear(KEY_FINANCE); break;
1131 case 0x192: map_key_clear(KEY_CALC); break;
1132 case 0x193: map_key_clear(KEY_PLAYER); break;
1133 case 0x194: map_key_clear(KEY_FILE); break;
1134 case 0x196: map_key_clear(KEY_WWW); break;
1135 case 0x199: map_key_clear(KEY_CHAT); break;
1136 case 0x19c: map_key_clear(KEY_LOGOFF); break;
1137 case 0x19e: map_key_clear(KEY_COFFEE); break;
1138 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
1139 case 0x1a2: map_key_clear(KEY_APPSELECT); break;
1140 case 0x1a3: map_key_clear(KEY_NEXT); break;
1141 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
1142 case 0x1a6: map_key_clear(KEY_HELP); break;
1143 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
1144 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
1145 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
1146 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
1147 case 0x1b4: map_key_clear(KEY_FILE); break;
1148 case 0x1b6: map_key_clear(KEY_IMAGES); break;
1149 case 0x1b7: map_key_clear(KEY_AUDIO); break;
1150 case 0x1b8: map_key_clear(KEY_VIDEO); break;
1151 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
1152 case 0x1bd: map_key_clear(KEY_INFO); break;
1153 case 0x1cb: map_key_clear(KEY_ASSISTANT); break;
1154 case 0x201: map_key_clear(KEY_NEW); break;
1155 case 0x202: map_key_clear(KEY_OPEN); break;
1156 case 0x203: map_key_clear(KEY_CLOSE); break;
1157 case 0x204: map_key_clear(KEY_EXIT); break;
1158 case 0x207: map_key_clear(KEY_SAVE); break;
1159 case 0x208: map_key_clear(KEY_PRINT); break;
1160 case 0x209: map_key_clear(KEY_PROPS); break;
1161 case 0x21a: map_key_clear(KEY_UNDO); break;
1162 case 0x21b: map_key_clear(KEY_COPY); break;
1163 case 0x21c: map_key_clear(KEY_CUT); break;
1164 case 0x21d: map_key_clear(KEY_PASTE); break;
1165 case 0x21f: map_key_clear(KEY_FIND); break;
1166 case 0x221: map_key_clear(KEY_SEARCH); break;
1167 case 0x222: map_key_clear(KEY_GOTO); break;
1168 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
1169 case 0x224: map_key_clear(KEY_BACK); break;
1170 case 0x225: map_key_clear(KEY_FORWARD); break;
1171 case 0x226: map_key_clear(KEY_STOP); break;
1172 case 0x227: map_key_clear(KEY_REFRESH); break;
1173 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
1174 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
1175 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
1176 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
1177 case 0x232: map_key_clear(KEY_FULL_SCREEN); break;
1178 case 0x233: map_key_clear(KEY_SCROLLUP); break;
1179 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
1180 case 0x238: /* AC Pan */
1181 set_bit(REL_HWHEEL, input->relbit);
1182 map_rel(REL_HWHEEL_HI_RES);
1183 break;
1184 case 0x23d: map_key_clear(KEY_EDIT); break;
1185 case 0x25f: map_key_clear(KEY_CANCEL); break;
1186 case 0x269: map_key_clear(KEY_INSERT); break;
1187 case 0x26a: map_key_clear(KEY_DELETE); break;
1188 case 0x279: map_key_clear(KEY_REDO); break;
1189
1190 case 0x289: map_key_clear(KEY_REPLY); break;
1191 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
1192 case 0x28c: map_key_clear(KEY_SEND); break;
1193
1194 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break;
1195
1196 case 0x2a2: map_key_clear(KEY_ALL_APPLICATIONS); break;
1197
1198 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
1199 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
1200 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
1201 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
1202 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
1203 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
1204
1205 case 0x29f: map_key_clear(KEY_SCALE); break;
1206
1207 default: map_key_clear(KEY_UNKNOWN);
1208 }
1209 break;
1210
1211 case HID_UP_GENDEVCTRLS:
1212 switch (usage->hid) {
1213 case HID_DC_BATTERYSTRENGTH:
1214 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false);
1215 usage->type = EV_PWR;
1216 return;
1217 }
1218 goto unknown;
1219
1220 case HID_UP_BATTERY:
1221 switch (usage->hid) {
1222 case HID_BAT_ABSOLUTESTATEOFCHARGE:
1223 hidinput_setup_battery(device, HID_INPUT_REPORT, field, true);
1224 usage->type = EV_PWR;
1225 return;
1226 }
1227 goto unknown;
1228
1229 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
1230 set_bit(EV_REP, input->evbit);
1231 switch (usage->hid & HID_USAGE) {
1232 case 0x021: map_key_clear(KEY_PRINT); break;
1233 case 0x070: map_key_clear(KEY_HP); break;
1234 case 0x071: map_key_clear(KEY_CAMERA); break;
1235 case 0x072: map_key_clear(KEY_SOUND); break;
1236 case 0x073: map_key_clear(KEY_QUESTION); break;
1237 case 0x080: map_key_clear(KEY_EMAIL); break;
1238 case 0x081: map_key_clear(KEY_CHAT); break;
1239 case 0x082: map_key_clear(KEY_SEARCH); break;
1240 case 0x083: map_key_clear(KEY_CONNECT); break;
1241 case 0x084: map_key_clear(KEY_FINANCE); break;
1242 case 0x085: map_key_clear(KEY_SPORT); break;
1243 case 0x086: map_key_clear(KEY_SHOP); break;
1244 default: goto ignore;
1245 }
1246 break;
1247
1248 case HID_UP_HPVENDOR2:
1249 set_bit(EV_REP, input->evbit);
1250 switch (usage->hid & HID_USAGE) {
1251 case 0x001: map_key_clear(KEY_MICMUTE); break;
1252 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1253 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
1254 default: goto ignore;
1255 }
1256 break;
1257
1258 case HID_UP_MSVENDOR:
1259 goto ignore;
1260
1261 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
1262 set_bit(EV_REP, input->evbit);
1263 goto ignore;
1264
1265 case HID_UP_LOGIVENDOR:
1266 /* intentional fallback */
1267 case HID_UP_LOGIVENDOR2:
1268 /* intentional fallback */
1269 case HID_UP_LOGIVENDOR3:
1270 goto ignore;
1271
1272 case HID_UP_PID:
1273 switch (usage->hid & HID_USAGE) {
1274 case 0xa4: map_key_clear(BTN_DEAD); break;
1275 default: goto ignore;
1276 }
1277 break;
1278
1279 default:
1280 unknown:
1281 if (field->report_size == 1) {
1282 if (field->report->type == HID_OUTPUT_REPORT) {
1283 map_led(LED_MISC);
1284 break;
1285 }
1286 map_key(BTN_MISC);
1287 break;
1288 }
1289 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
1290 map_rel(REL_MISC);
1291 break;
1292 }
1293 map_abs(ABS_MISC);
1294 break;
1295 }
1296
1297mapped:
1298 /* Mapping failed, bail out */
1299 if (!bit)
1300 return;
1301
1302 if (device->driver->input_mapped &&
1303 device->driver->input_mapped(device, hidinput, field, usage,
1304 &bit, &max) < 0) {
1305 /*
1306 * The driver indicated that no further generic handling
1307 * of the usage is desired.
1308 */
1309 return;
1310 }
1311
1312 set_bit(usage->type, input->evbit);
1313
1314 /*
1315 * This part is *really* controversial:
1316 * - HID aims at being generic so we should do our best to export
1317 * all incoming events
1318 * - HID describes what events are, so there is no reason for ABS_X
1319 * to be mapped to ABS_Y
1320 * - HID is using *_MISC+N as a default value, but nothing prevents
1321 * *_MISC+N to overwrite a legitimate even, which confuses userspace
1322 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different
1323 * processing)
1324 *
1325 * If devices still want to use this (at their own risk), they will
1326 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but
1327 * the default should be a reliable mapping.
1328 */
1329 while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
1330 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {
1331 usage->code = find_next_zero_bit(bit,
1332 max + 1,
1333 usage->code);
1334 } else {
1335 device->status |= HID_STAT_DUP_DETECTED;
1336 goto ignore;
1337 }
1338 }
1339
1340 if (usage->code > max)
1341 goto ignore;
1342
1343 if (usage->type == EV_ABS) {
1344
1345 int a = field->logical_minimum;
1346 int b = field->logical_maximum;
1347
1348 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1349 a = field->logical_minimum = 0;
1350 b = field->logical_maximum = 255;
1351 }
1352
1353 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1354 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
1355 else input_set_abs_params(input, usage->code, a, b, 0, 0);
1356
1357 input_abs_set_res(input, usage->code,
1358 hidinput_calc_abs_res(field, usage->code));
1359
1360 /* use a larger default input buffer for MT devices */
1361 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1362 input_set_events_per_packet(input, 60);
1363 }
1364
1365 if (usage->type == EV_ABS &&
1366 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
1367 int i;
1368 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1369 input_set_abs_params(input, i, -1, 1, 0, 0);
1370 set_bit(i, input->absbit);
1371 }
1372 if (usage->hat_dir && !field->dpad)
1373 field->dpad = usage->code;
1374 }
1375
1376 /* for those devices which produce Consumer volume usage as relative,
1377 * we emulate pressing volumeup/volumedown appropriate number of times
1378 * in hidinput_hid_event()
1379 */
1380 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1381 (usage->code == ABS_VOLUME)) {
1382 set_bit(KEY_VOLUMEUP, input->keybit);
1383 set_bit(KEY_VOLUMEDOWN, input->keybit);
1384 }
1385
1386 if (usage->type == EV_KEY) {
1387 set_bit(EV_MSC, input->evbit);
1388 set_bit(MSC_SCAN, input->mscbit);
1389 }
1390
1391 return;
1392
1393ignore:
1394 usage->type = 0;
1395 usage->code = 0;
1396}
1397
1398static void hidinput_handle_scroll(struct hid_usage *usage,
1399 struct input_dev *input,
1400 __s32 value)
1401{
1402 int code;
1403 int hi_res, lo_res;
1404
1405 if (value == 0)
1406 return;
1407
1408 if (usage->code == REL_WHEEL_HI_RES)
1409 code = REL_WHEEL;
1410 else
1411 code = REL_HWHEEL;
1412
1413 /*
1414 * Windows reports one wheel click as value 120. Where a high-res
1415 * scroll wheel is present, a fraction of 120 is reported instead.
1416 * Our REL_WHEEL_HI_RES axis does the same because all HW must
1417 * adhere to the 120 expectation.
1418 */
1419 hi_res = value * 120/usage->resolution_multiplier;
1420
1421 usage->wheel_accumulated += hi_res;
1422 lo_res = usage->wheel_accumulated/120;
1423 if (lo_res)
1424 usage->wheel_accumulated -= lo_res * 120;
1425
1426 input_event(input, EV_REL, code, lo_res);
1427 input_event(input, EV_REL, usage->code, hi_res);
1428}
1429
1430static void hid_report_release_tool(struct hid_report *report, struct input_dev *input,
1431 unsigned int tool)
1432{
1433 /* if the given tool is not currently reported, ignore */
1434 if (!test_bit(tool, input->key))
1435 return;
1436
1437 /*
1438 * if the given tool was previously set, release it,
1439 * release any TOUCH and send an EV_SYN
1440 */
1441 input_event(input, EV_KEY, BTN_TOUCH, 0);
1442 input_event(input, EV_KEY, tool, 0);
1443 input_event(input, EV_SYN, SYN_REPORT, 0);
1444
1445 report->tool = 0;
1446}
1447
1448static void hid_report_set_tool(struct hid_report *report, struct input_dev *input,
1449 unsigned int new_tool)
1450{
1451 if (report->tool != new_tool)
1452 hid_report_release_tool(report, input, report->tool);
1453
1454 input_event(input, EV_KEY, new_tool, 1);
1455 report->tool = new_tool;
1456}
1457
1458void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1459{
1460 struct input_dev *input;
1461 struct hid_report *report = field->report;
1462 unsigned *quirks = &hid->quirks;
1463
1464 if (!usage->type)
1465 return;
1466
1467 if (usage->type == EV_PWR) {
1468 hidinput_update_battery(hid, value);
1469 return;
1470 }
1471
1472 if (!field->hidinput)
1473 return;
1474
1475 input = field->hidinput->input;
1476
1477 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1478 int hat_dir = usage->hat_dir;
1479 if (!hat_dir)
1480 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1481 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1482 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
1483 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1484 return;
1485 }
1486
1487 /*
1488 * Ignore out-of-range values as per HID specification,
1489 * section 5.10 and 6.2.25, when NULL state bit is present.
1490 * When it's not, clamp the value to match Microsoft's input
1491 * driver as mentioned in "Required HID usages for digitizers":
1492 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
1493 *
1494 * The logical_minimum < logical_maximum check is done so that we
1495 * don't unintentionally discard values sent by devices which
1496 * don't specify logical min and max.
1497 */
1498 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1499 field->logical_minimum < field->logical_maximum) {
1500 if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
1501 (value < field->logical_minimum ||
1502 value > field->logical_maximum)) {
1503 dbg_hid("Ignoring out-of-range value %x\n", value);
1504 return;
1505 }
1506 value = clamp(value,
1507 field->logical_minimum,
1508 field->logical_maximum);
1509 }
1510
1511 switch (usage->hid) {
1512 case HID_DG_ERASER:
1513 report->tool_active |= !!value;
1514
1515 /*
1516 * if eraser is set, we must enforce BTN_TOOL_RUBBER
1517 * to accommodate for devices not following the spec.
1518 */
1519 if (value)
1520 hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1521 else if (report->tool != BTN_TOOL_RUBBER)
1522 /* value is off, tool is not rubber, ignore */
1523 return;
1524
1525 /* let hid-input set BTN_TOUCH */
1526 break;
1527
1528 case HID_DG_INVERT:
1529 report->tool_active |= !!value;
1530
1531 /*
1532 * If invert is set, we store BTN_TOOL_RUBBER.
1533 */
1534 if (value)
1535 hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1536 else if (!report->tool_active)
1537 /* tool_active not set means Invert and Eraser are not set */
1538 hid_report_release_tool(report, input, BTN_TOOL_RUBBER);
1539
1540 /* no further processing */
1541 return;
1542
1543 case HID_DG_INRANGE:
1544 report->tool_active |= !!value;
1545
1546 if (report->tool_active) {
1547 /*
1548 * if tool is not set but is marked as active,
1549 * assume ours
1550 */
1551 if (!report->tool)
1552 report->tool = usage->code;
1553
1554 /* drivers may have changed the value behind our back, resend it */
1555 hid_report_set_tool(report, input, report->tool);
1556 } else {
1557 hid_report_release_tool(report, input, usage->code);
1558 }
1559
1560 /* reset tool_active for the next event */
1561 report->tool_active = false;
1562
1563 /* no further processing */
1564 return;
1565
1566 case HID_DG_TIPSWITCH:
1567 report->tool_active |= !!value;
1568
1569 /* if tool is set to RUBBER we should ignore the current value */
1570 if (report->tool == BTN_TOOL_RUBBER)
1571 return;
1572
1573 break;
1574
1575 case HID_DG_TIPPRESSURE:
1576 if (*quirks & HID_QUIRK_NOTOUCH) {
1577 int a = field->logical_minimum;
1578 int b = field->logical_maximum;
1579
1580 if (value > a + ((b - a) >> 3)) {
1581 input_event(input, EV_KEY, BTN_TOUCH, 1);
1582 report->tool_active = true;
1583 }
1584 }
1585 break;
1586
1587 case HID_UP_PID | 0x83UL: /* Simultaneous Effects Max */
1588 dbg_hid("Maximum Effects - %d\n",value);
1589 return;
1590
1591 case HID_UP_PID | 0x7fUL:
1592 dbg_hid("PID Pool Report\n");
1593 return;
1594 }
1595
1596 switch (usage->type) {
1597 case EV_KEY:
1598 if (usage->code == 0) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1599 return;
1600 break;
1601
1602 case EV_REL:
1603 if (usage->code == REL_WHEEL_HI_RES ||
1604 usage->code == REL_HWHEEL_HI_RES) {
1605 hidinput_handle_scroll(usage, input, value);
1606 return;
1607 }
1608 break;
1609
1610 case EV_ABS:
1611 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1612 usage->code == ABS_VOLUME) {
1613 int count = abs(value);
1614 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1615 int i;
1616
1617 for (i = 0; i < count; i++) {
1618 input_event(input, EV_KEY, direction, 1);
1619 input_sync(input);
1620 input_event(input, EV_KEY, direction, 0);
1621 input_sync(input);
1622 }
1623 return;
1624
1625 } else if (((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) ||
1626 ((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y))
1627 value = field->logical_maximum - value;
1628 break;
1629 }
1630
1631 /*
1632 * Ignore reports for absolute data if the data didn't change. This is
1633 * not only an optimization but also fixes 'dead' key reports. Some
1634 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1635 * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1636 * can only have one of them physically available. The 'dead' keys
1637 * report constant 0. As all map to the same keycode, they'd confuse
1638 * the input layer. If we filter the 'dead' keys on the HID level, we
1639 * skip the keycode translation and only forward real events.
1640 */
1641 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1642 HID_MAIN_ITEM_BUFFERED_BYTE)) &&
1643 (field->flags & HID_MAIN_ITEM_VARIABLE) &&
1644 usage->usage_index < field->maxusage &&
1645 value == field->value[usage->usage_index])
1646 return;
1647
1648 /* report the usage code as scancode if the key status has changed */
1649 if (usage->type == EV_KEY &&
1650 (!test_bit(usage->code, input->key)) == value)
1651 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1652
1653 input_event(input, usage->type, usage->code, value);
1654
1655 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1656 usage->type == EV_KEY && value) {
1657 input_sync(input);
1658 input_event(input, usage->type, usage->code, 0);
1659 }
1660}
1661
1662void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1663{
1664 struct hid_input *hidinput;
1665
1666 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1667 return;
1668
1669 list_for_each_entry(hidinput, &hid->inputs, list)
1670 input_sync(hidinput->input);
1671}
1672EXPORT_SYMBOL_GPL(hidinput_report_event);
1673
1674static int hidinput_find_field(struct hid_device *hid, unsigned int type,
1675 unsigned int code, struct hid_field **field)
1676{
1677 struct hid_report *report;
1678 int i, j;
1679
1680 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1681 for (i = 0; i < report->maxfield; i++) {
1682 *field = report->field[i];
1683 for (j = 0; j < (*field)->maxusage; j++)
1684 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1685 return j;
1686 }
1687 }
1688 return -1;
1689}
1690
1691struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1692{
1693 struct hid_report *report;
1694 struct hid_field *field;
1695 int i, j;
1696
1697 list_for_each_entry(report,
1698 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1699 list) {
1700 for (i = 0; i < report->maxfield; i++) {
1701 field = report->field[i];
1702 for (j = 0; j < field->maxusage; j++)
1703 if (field->usage[j].type == EV_LED)
1704 return field;
1705 }
1706 }
1707 return NULL;
1708}
1709EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1710
1711unsigned int hidinput_count_leds(struct hid_device *hid)
1712{
1713 struct hid_report *report;
1714 struct hid_field *field;
1715 int i, j;
1716 unsigned int count = 0;
1717
1718 list_for_each_entry(report,
1719 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1720 list) {
1721 for (i = 0; i < report->maxfield; i++) {
1722 field = report->field[i];
1723 for (j = 0; j < field->maxusage; j++)
1724 if (field->usage[j].type == EV_LED &&
1725 field->value[j])
1726 count += 1;
1727 }
1728 }
1729 return count;
1730}
1731EXPORT_SYMBOL_GPL(hidinput_count_leds);
1732
1733static void hidinput_led_worker(struct work_struct *work)
1734{
1735 struct hid_device *hid = container_of(work, struct hid_device,
1736 led_work);
1737 struct hid_field *field;
1738 struct hid_report *report;
1739 int ret;
1740 u32 len;
1741 __u8 *buf;
1742
1743 field = hidinput_get_led_field(hid);
1744 if (!field)
1745 return;
1746
1747 /*
1748 * field->report is accessed unlocked regarding HID core. So there might
1749 * be another incoming SET-LED request from user-space, which changes
1750 * the LED state while we assemble our outgoing buffer. However, this
1751 * doesn't matter as hid_output_report() correctly converts it into a
1752 * boolean value no matter what information is currently set on the LED
1753 * field (even garbage). So the remote device will always get a valid
1754 * request.
1755 * And in case we send a wrong value, a next led worker is spawned
1756 * for every SET-LED request so the following worker will send the
1757 * correct value, guaranteed!
1758 */
1759
1760 report = field->report;
1761
1762 /* use custom SET_REPORT request if possible (asynchronous) */
1763 if (hid->ll_driver->request)
1764 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1765
1766 /* fall back to generic raw-output-report */
1767 len = hid_report_len(report);
1768 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1769 if (!buf)
1770 return;
1771
1772 hid_output_report(report, buf);
1773 /* synchronous output report */
1774 ret = hid_hw_output_report(hid, buf, len);
1775 if (ret == -ENOSYS)
1776 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1777 HID_REQ_SET_REPORT);
1778 kfree(buf);
1779}
1780
1781static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1782 unsigned int code, int value)
1783{
1784 struct hid_device *hid = input_get_drvdata(dev);
1785 struct hid_field *field;
1786 int offset;
1787
1788 if (type == EV_FF)
1789 return input_ff_event(dev, type, code, value);
1790
1791 if (type != EV_LED)
1792 return -1;
1793
1794 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1795 hid_warn(dev, "event field not found\n");
1796 return -1;
1797 }
1798
1799 hid_set_field(field, offset, value);
1800
1801 schedule_work(&hid->led_work);
1802 return 0;
1803}
1804
1805static int hidinput_open(struct input_dev *dev)
1806{
1807 struct hid_device *hid = input_get_drvdata(dev);
1808
1809 return hid_hw_open(hid);
1810}
1811
1812static void hidinput_close(struct input_dev *dev)
1813{
1814 struct hid_device *hid = input_get_drvdata(dev);
1815
1816 hid_hw_close(hid);
1817}
1818
1819static bool __hidinput_change_resolution_multipliers(struct hid_device *hid,
1820 struct hid_report *report, bool use_logical_max)
1821{
1822 struct hid_usage *usage;
1823 bool update_needed = false;
1824 bool get_report_completed = false;
1825 int i, j;
1826
1827 if (report->maxfield == 0)
1828 return false;
1829
1830 for (i = 0; i < report->maxfield; i++) {
1831 __s32 value = use_logical_max ?
1832 report->field[i]->logical_maximum :
1833 report->field[i]->logical_minimum;
1834
1835 /* There is no good reason for a Resolution
1836 * Multiplier to have a count other than 1.
1837 * Ignore that case.
1838 */
1839 if (report->field[i]->report_count != 1)
1840 continue;
1841
1842 for (j = 0; j < report->field[i]->maxusage; j++) {
1843 usage = &report->field[i]->usage[j];
1844
1845 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER)
1846 continue;
1847
1848 /*
1849 * If we have more than one feature within this
1850 * report we need to fill in the bits from the
1851 * others before we can overwrite the ones for the
1852 * Resolution Multiplier.
1853 *
1854 * But if we're not allowed to read from the device,
1855 * we just bail. Such a device should not exist
1856 * anyway.
1857 */
1858 if (!get_report_completed && report->maxfield > 1) {
1859 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS)
1860 return update_needed;
1861
1862 hid_hw_request(hid, report, HID_REQ_GET_REPORT);
1863 hid_hw_wait(hid);
1864 get_report_completed = true;
1865 }
1866
1867 report->field[i]->value[j] = value;
1868 update_needed = true;
1869 }
1870 }
1871
1872 return update_needed;
1873}
1874
1875static void hidinput_change_resolution_multipliers(struct hid_device *hid)
1876{
1877 struct hid_report_enum *rep_enum;
1878 struct hid_report *rep;
1879 int ret;
1880
1881 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1882 list_for_each_entry(rep, &rep_enum->report_list, list) {
1883 bool update_needed = __hidinput_change_resolution_multipliers(hid,
1884 rep, true);
1885
1886 if (update_needed) {
1887 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT);
1888 if (ret) {
1889 __hidinput_change_resolution_multipliers(hid,
1890 rep, false);
1891 return;
1892 }
1893 }
1894 }
1895
1896 /* refresh our structs */
1897 hid_setup_resolution_multiplier(hid);
1898}
1899
1900static void report_features(struct hid_device *hid)
1901{
1902 struct hid_driver *drv = hid->driver;
1903 struct hid_report_enum *rep_enum;
1904 struct hid_report *rep;
1905 struct hid_usage *usage;
1906 int i, j;
1907
1908 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1909 list_for_each_entry(rep, &rep_enum->report_list, list)
1910 for (i = 0; i < rep->maxfield; i++) {
1911 /* Ignore if report count is out of bounds. */
1912 if (rep->field[i]->report_count < 1)
1913 continue;
1914
1915 for (j = 0; j < rep->field[i]->maxusage; j++) {
1916 usage = &rep->field[i]->usage[j];
1917
1918 /* Verify if Battery Strength feature is available */
1919 if (usage->hid == HID_DC_BATTERYSTRENGTH)
1920 hidinput_setup_battery(hid, HID_FEATURE_REPORT,
1921 rep->field[i], false);
1922
1923 if (drv->feature_mapping)
1924 drv->feature_mapping(hid, rep->field[i], usage);
1925 }
1926 }
1927}
1928
1929static struct hid_input *hidinput_allocate(struct hid_device *hid,
1930 unsigned int application)
1931{
1932 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1933 struct input_dev *input_dev = input_allocate_device();
1934 const char *suffix = NULL;
1935 size_t suffix_len, name_len;
1936
1937 if (!hidinput || !input_dev)
1938 goto fail;
1939
1940 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&
1941 hid->maxapplication > 1) {
1942 switch (application) {
1943 case HID_GD_KEYBOARD:
1944 suffix = "Keyboard";
1945 break;
1946 case HID_GD_KEYPAD:
1947 suffix = "Keypad";
1948 break;
1949 case HID_GD_MOUSE:
1950 suffix = "Mouse";
1951 break;
1952 case HID_DG_PEN:
1953 /*
1954 * yes, there is an issue here:
1955 * DG_PEN -> "Stylus"
1956 * DG_STYLUS -> "Pen"
1957 * But changing this now means users with config snippets
1958 * will have to change it and the test suite will not be happy.
1959 */
1960 suffix = "Stylus";
1961 break;
1962 case HID_DG_STYLUS:
1963 suffix = "Pen";
1964 break;
1965 case HID_DG_TOUCHSCREEN:
1966 suffix = "Touchscreen";
1967 break;
1968 case HID_DG_TOUCHPAD:
1969 suffix = "Touchpad";
1970 break;
1971 case HID_GD_SYSTEM_CONTROL:
1972 suffix = "System Control";
1973 break;
1974 case HID_CP_CONSUMER_CONTROL:
1975 suffix = "Consumer Control";
1976 break;
1977 case HID_GD_WIRELESS_RADIO_CTLS:
1978 suffix = "Wireless Radio Control";
1979 break;
1980 case HID_GD_SYSTEM_MULTIAXIS:
1981 suffix = "System Multi Axis";
1982 break;
1983 default:
1984 break;
1985 }
1986 }
1987
1988 if (suffix) {
1989 name_len = strlen(hid->name);
1990 suffix_len = strlen(suffix);
1991 if ((name_len < suffix_len) ||
1992 strcmp(hid->name + name_len - suffix_len, suffix)) {
1993 hidinput->name = kasprintf(GFP_KERNEL, "%s %s",
1994 hid->name, suffix);
1995 if (!hidinput->name)
1996 goto fail;
1997 }
1998 }
1999
2000 input_set_drvdata(input_dev, hid);
2001 input_dev->event = hidinput_input_event;
2002 input_dev->open = hidinput_open;
2003 input_dev->close = hidinput_close;
2004 input_dev->setkeycode = hidinput_setkeycode;
2005 input_dev->getkeycode = hidinput_getkeycode;
2006
2007 input_dev->name = hidinput->name ? hidinput->name : hid->name;
2008 input_dev->phys = hid->phys;
2009 input_dev->uniq = hid->uniq;
2010 input_dev->id.bustype = hid->bus;
2011 input_dev->id.vendor = hid->vendor;
2012 input_dev->id.product = hid->product;
2013 input_dev->id.version = hid->version;
2014 input_dev->dev.parent = &hid->dev;
2015
2016 hidinput->input = input_dev;
2017 hidinput->application = application;
2018 list_add_tail(&hidinput->list, &hid->inputs);
2019
2020 INIT_LIST_HEAD(&hidinput->reports);
2021
2022 return hidinput;
2023
2024fail:
2025 kfree(hidinput);
2026 input_free_device(input_dev);
2027 hid_err(hid, "Out of memory during hid input probe\n");
2028 return NULL;
2029}
2030
2031static bool hidinput_has_been_populated(struct hid_input *hidinput)
2032{
2033 int i;
2034 unsigned long r = 0;
2035
2036 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
2037 r |= hidinput->input->evbit[i];
2038
2039 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
2040 r |= hidinput->input->keybit[i];
2041
2042 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
2043 r |= hidinput->input->relbit[i];
2044
2045 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
2046 r |= hidinput->input->absbit[i];
2047
2048 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
2049 r |= hidinput->input->mscbit[i];
2050
2051 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
2052 r |= hidinput->input->ledbit[i];
2053
2054 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
2055 r |= hidinput->input->sndbit[i];
2056
2057 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
2058 r |= hidinput->input->ffbit[i];
2059
2060 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
2061 r |= hidinput->input->swbit[i];
2062
2063 return !!r;
2064}
2065
2066static void hidinput_cleanup_hidinput(struct hid_device *hid,
2067 struct hid_input *hidinput)
2068{
2069 struct hid_report *report;
2070 int i, k;
2071
2072 list_del(&hidinput->list);
2073 input_free_device(hidinput->input);
2074 kfree(hidinput->name);
2075
2076 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
2077 if (k == HID_OUTPUT_REPORT &&
2078 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2079 continue;
2080
2081 list_for_each_entry(report, &hid->report_enum[k].report_list,
2082 list) {
2083
2084 for (i = 0; i < report->maxfield; i++)
2085 if (report->field[i]->hidinput == hidinput)
2086 report->field[i]->hidinput = NULL;
2087 }
2088 }
2089
2090 kfree(hidinput);
2091}
2092
2093static struct hid_input *hidinput_match(struct hid_report *report)
2094{
2095 struct hid_device *hid = report->device;
2096 struct hid_input *hidinput;
2097
2098 list_for_each_entry(hidinput, &hid->inputs, list) {
2099 if (hidinput->report &&
2100 hidinput->report->id == report->id)
2101 return hidinput;
2102 }
2103
2104 return NULL;
2105}
2106
2107static struct hid_input *hidinput_match_application(struct hid_report *report)
2108{
2109 struct hid_device *hid = report->device;
2110 struct hid_input *hidinput;
2111
2112 list_for_each_entry(hidinput, &hid->inputs, list) {
2113 if (hidinput->application == report->application)
2114 return hidinput;
2115
2116 /*
2117 * Keep SystemControl and ConsumerControl applications together
2118 * with the main keyboard, if present.
2119 */
2120 if ((report->application == HID_GD_SYSTEM_CONTROL ||
2121 report->application == HID_CP_CONSUMER_CONTROL) &&
2122 hidinput->application == HID_GD_KEYBOARD) {
2123 return hidinput;
2124 }
2125 }
2126
2127 return NULL;
2128}
2129
2130static inline void hidinput_configure_usages(struct hid_input *hidinput,
2131 struct hid_report *report)
2132{
2133 int i, j, k;
2134 int first_field_index = 0;
2135 int slot_collection_index = -1;
2136 int prev_collection_index = -1;
2137 unsigned int slot_idx = 0;
2138 struct hid_field *field;
2139
2140 /*
2141 * First tag all the fields that are part of a slot,
2142 * a slot needs to have one Contact ID in the collection
2143 */
2144 for (i = 0; i < report->maxfield; i++) {
2145 field = report->field[i];
2146
2147 /* ignore fields without usage */
2148 if (field->maxusage < 1)
2149 continue;
2150
2151 /*
2152 * janitoring when collection_index changes
2153 */
2154 if (prev_collection_index != field->usage->collection_index) {
2155 prev_collection_index = field->usage->collection_index;
2156 first_field_index = i;
2157 }
2158
2159 /*
2160 * if we already found a Contact ID in the collection,
2161 * tag and continue to the next.
2162 */
2163 if (slot_collection_index == field->usage->collection_index) {
2164 field->slot_idx = slot_idx;
2165 continue;
2166 }
2167
2168 /* check if the current field has Contact ID */
2169 for (j = 0; j < field->maxusage; j++) {
2170 if (field->usage[j].hid == HID_DG_CONTACTID) {
2171 slot_collection_index = field->usage->collection_index;
2172 slot_idx++;
2173
2174 /*
2175 * mark all previous fields and this one in the
2176 * current collection to be slotted.
2177 */
2178 for (k = first_field_index; k <= i; k++)
2179 report->field[k]->slot_idx = slot_idx;
2180 break;
2181 }
2182 }
2183 }
2184
2185 for (i = 0; i < report->maxfield; i++)
2186 for (j = 0; j < report->field[i]->maxusage; j++)
2187 hidinput_configure_usage(hidinput, report->field[i],
2188 report->field[i]->usage + j,
2189 j);
2190}
2191
2192/*
2193 * Register the input device; print a message.
2194 * Configure the input layer interface
2195 * Read all reports and initialize the absolute field values.
2196 */
2197
2198int hidinput_connect(struct hid_device *hid, unsigned int force)
2199{
2200 struct hid_driver *drv = hid->driver;
2201 struct hid_report *report;
2202 struct hid_input *next, *hidinput = NULL;
2203 unsigned int application;
2204 int i, k;
2205
2206 INIT_LIST_HEAD(&hid->inputs);
2207 INIT_WORK(&hid->led_work, hidinput_led_worker);
2208
2209 hid->status &= ~HID_STAT_DUP_DETECTED;
2210
2211 if (!force) {
2212 for (i = 0; i < hid->maxcollection; i++) {
2213 struct hid_collection *col = &hid->collection[i];
2214 if (col->type == HID_COLLECTION_APPLICATION ||
2215 col->type == HID_COLLECTION_PHYSICAL)
2216 if (IS_INPUT_APPLICATION(col->usage))
2217 break;
2218 }
2219
2220 if (i == hid->maxcollection)
2221 return -1;
2222 }
2223
2224 report_features(hid);
2225
2226 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
2227 if (k == HID_OUTPUT_REPORT &&
2228 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2229 continue;
2230
2231 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
2232
2233 if (!report->maxfield)
2234 continue;
2235
2236 application = report->application;
2237
2238 /*
2239 * Find the previous hidinput report attached
2240 * to this report id.
2241 */
2242 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
2243 hidinput = hidinput_match(report);
2244 else if (hid->maxapplication > 1 &&
2245 (hid->quirks & HID_QUIRK_INPUT_PER_APP))
2246 hidinput = hidinput_match_application(report);
2247
2248 if (!hidinput) {
2249 hidinput = hidinput_allocate(hid, application);
2250 if (!hidinput)
2251 goto out_unwind;
2252 }
2253
2254 hidinput_configure_usages(hidinput, report);
2255
2256 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
2257 hidinput->report = report;
2258
2259 list_add_tail(&report->hidinput_list,
2260 &hidinput->reports);
2261 }
2262 }
2263
2264 hidinput_change_resolution_multipliers(hid);
2265
2266 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
2267 if (drv->input_configured &&
2268 drv->input_configured(hid, hidinput))
2269 goto out_unwind;
2270
2271 if (!hidinput_has_been_populated(hidinput)) {
2272 /* no need to register an input device not populated */
2273 hidinput_cleanup_hidinput(hid, hidinput);
2274 continue;
2275 }
2276
2277 if (input_register_device(hidinput->input))
2278 goto out_unwind;
2279 hidinput->registered = true;
2280 }
2281
2282 if (list_empty(&hid->inputs)) {
2283 hid_err(hid, "No inputs registered, leaving\n");
2284 goto out_unwind;
2285 }
2286
2287 if (hid->status & HID_STAT_DUP_DETECTED)
2288 hid_dbg(hid,
2289 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n");
2290
2291 return 0;
2292
2293out_unwind:
2294 /* unwind the ones we already registered */
2295 hidinput_disconnect(hid);
2296
2297 return -1;
2298}
2299EXPORT_SYMBOL_GPL(hidinput_connect);
2300
2301void hidinput_disconnect(struct hid_device *hid)
2302{
2303 struct hid_input *hidinput, *next;
2304
2305 hidinput_cleanup_battery(hid);
2306
2307 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
2308 list_del(&hidinput->list);
2309 if (hidinput->registered)
2310 input_unregister_device(hidinput->input);
2311 else
2312 input_free_device(hidinput->input);
2313 kfree(hidinput->name);
2314 kfree(hidinput);
2315 }
2316
2317 /* led_work is spawned by input_dev callbacks, but doesn't access the
2318 * parent input_dev at all. Once all input devices are removed, we
2319 * know that led_work will never get restarted, so we can cancel it
2320 * synchronously and are safe. */
2321 cancel_work_sync(&hid->led_work);
2322}
2323EXPORT_SYMBOL_GPL(hidinput_disconnect);