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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_APPLE,
362 USB_DEVICE_ID_APPLE_MAGICTRACKPAD),
363 HID_BATTERY_QUIRK_IGNORE },
364 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM,
365 USB_DEVICE_ID_ELECOM_BM084),
366 HID_BATTERY_QUIRK_IGNORE },
367 { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL,
368 USB_DEVICE_ID_SYMBOL_SCANNER_3),
369 HID_BATTERY_QUIRK_IGNORE },
370 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
371 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD),
372 HID_BATTERY_QUIRK_IGNORE },
373 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
374 USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD),
375 HID_BATTERY_QUIRK_IGNORE },
376 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN),
377 HID_BATTERY_QUIRK_IGNORE },
378 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN),
379 HID_BATTERY_QUIRK_IGNORE },
380 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_L),
381 HID_BATTERY_QUIRK_AVOID_QUERY },
382 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_MW),
383 HID_BATTERY_QUIRK_AVOID_QUERY },
384 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_SW),
385 HID_BATTERY_QUIRK_AVOID_QUERY },
386 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_CHROMEBOOK_TROGDOR_POMPOM),
387 HID_BATTERY_QUIRK_AVOID_QUERY },
388 /*
389 * Elan I2C-HID touchscreens seem to all report a non present battery,
390 * set HID_BATTERY_QUIRK_IGNORE for all Elan I2C-HID devices.
391 */
392 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, HID_ANY_ID), HID_BATTERY_QUIRK_IGNORE },
393 {}
394};
395
396static unsigned find_battery_quirk(struct hid_device *hdev)
397{
398 unsigned quirks = 0;
399 const struct hid_device_id *match;
400
401 match = hid_match_id(hdev, hid_battery_quirks);
402 if (match != NULL)
403 quirks = match->driver_data;
404
405 return quirks;
406}
407
408static int hidinput_scale_battery_capacity(struct hid_device *dev,
409 int value)
410{
411 if (dev->battery_min < dev->battery_max &&
412 value >= dev->battery_min && value <= dev->battery_max)
413 value = ((value - dev->battery_min) * 100) /
414 (dev->battery_max - dev->battery_min);
415
416 return value;
417}
418
419static int hidinput_query_battery_capacity(struct hid_device *dev)
420{
421 u8 *buf;
422 int ret;
423
424 buf = kmalloc(4, GFP_KERNEL);
425 if (!buf)
426 return -ENOMEM;
427
428 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4,
429 dev->battery_report_type, HID_REQ_GET_REPORT);
430 if (ret < 2) {
431 kfree(buf);
432 return -ENODATA;
433 }
434
435 ret = hidinput_scale_battery_capacity(dev, buf[1]);
436 kfree(buf);
437 return ret;
438}
439
440static int hidinput_get_battery_property(struct power_supply *psy,
441 enum power_supply_property prop,
442 union power_supply_propval *val)
443{
444 struct hid_device *dev = power_supply_get_drvdata(psy);
445 int value;
446 int ret = 0;
447
448 switch (prop) {
449 case POWER_SUPPLY_PROP_PRESENT:
450 case POWER_SUPPLY_PROP_ONLINE:
451 val->intval = 1;
452 break;
453
454 case POWER_SUPPLY_PROP_CAPACITY:
455 if (dev->battery_status != HID_BATTERY_REPORTED &&
456 !dev->battery_avoid_query) {
457 value = hidinput_query_battery_capacity(dev);
458 if (value < 0)
459 return value;
460 } else {
461 value = dev->battery_capacity;
462 }
463
464 val->intval = value;
465 break;
466
467 case POWER_SUPPLY_PROP_MODEL_NAME:
468 val->strval = dev->name;
469 break;
470
471 case POWER_SUPPLY_PROP_STATUS:
472 if (dev->battery_status != HID_BATTERY_REPORTED &&
473 !dev->battery_avoid_query) {
474 value = hidinput_query_battery_capacity(dev);
475 if (value < 0)
476 return value;
477
478 dev->battery_capacity = value;
479 dev->battery_status = HID_BATTERY_QUERIED;
480 }
481
482 if (dev->battery_status == HID_BATTERY_UNKNOWN)
483 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
484 else
485 val->intval = dev->battery_charge_status;
486 break;
487
488 case POWER_SUPPLY_PROP_SCOPE:
489 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
490 break;
491
492 default:
493 ret = -EINVAL;
494 break;
495 }
496
497 return ret;
498}
499
500static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
501 struct hid_field *field, bool is_percentage)
502{
503 struct power_supply_desc *psy_desc;
504 struct power_supply_config psy_cfg = { .drv_data = dev, };
505 unsigned quirks;
506 s32 min, max;
507 int error;
508
509 if (dev->battery)
510 return 0; /* already initialized? */
511
512 quirks = find_battery_quirk(dev);
513
514 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
515 dev->bus, dev->vendor, dev->product, dev->version, quirks);
516
517 if (quirks & HID_BATTERY_QUIRK_IGNORE)
518 return 0;
519
520 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
521 if (!psy_desc)
522 return -ENOMEM;
523
524 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery",
525 strlen(dev->uniq) ?
526 dev->uniq : dev_name(&dev->dev));
527 if (!psy_desc->name) {
528 error = -ENOMEM;
529 goto err_free_mem;
530 }
531
532 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
533 psy_desc->properties = hidinput_battery_props;
534 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
535 psy_desc->use_for_apm = 0;
536 psy_desc->get_property = hidinput_get_battery_property;
537
538 min = field->logical_minimum;
539 max = field->logical_maximum;
540
541 if (is_percentage || (quirks & HID_BATTERY_QUIRK_PERCENT)) {
542 min = 0;
543 max = 100;
544 }
545
546 if (quirks & HID_BATTERY_QUIRK_FEATURE)
547 report_type = HID_FEATURE_REPORT;
548
549 dev->battery_min = min;
550 dev->battery_max = max;
551 dev->battery_report_type = report_type;
552 dev->battery_report_id = field->report->id;
553 dev->battery_charge_status = POWER_SUPPLY_STATUS_DISCHARGING;
554
555 /*
556 * Stylus is normally not connected to the device and thus we
557 * can't query the device and get meaningful battery strength.
558 * We have to wait for the device to report it on its own.
559 */
560 dev->battery_avoid_query = report_type == HID_INPUT_REPORT &&
561 field->physical == HID_DG_STYLUS;
562
563 if (quirks & HID_BATTERY_QUIRK_AVOID_QUERY)
564 dev->battery_avoid_query = true;
565
566 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
567 if (IS_ERR(dev->battery)) {
568 error = PTR_ERR(dev->battery);
569 hid_warn(dev, "can't register power supply: %d\n", error);
570 goto err_free_name;
571 }
572
573 power_supply_powers(dev->battery, &dev->dev);
574 return 0;
575
576err_free_name:
577 kfree(psy_desc->name);
578err_free_mem:
579 kfree(psy_desc);
580 dev->battery = NULL;
581 return error;
582}
583
584static void hidinput_cleanup_battery(struct hid_device *dev)
585{
586 const struct power_supply_desc *psy_desc;
587
588 if (!dev->battery)
589 return;
590
591 psy_desc = dev->battery->desc;
592 power_supply_unregister(dev->battery);
593 kfree(psy_desc->name);
594 kfree(psy_desc);
595 dev->battery = NULL;
596}
597
598static void hidinput_update_battery(struct hid_device *dev, int value)
599{
600 int capacity;
601
602 if (!dev->battery)
603 return;
604
605 if (value == 0 || value < dev->battery_min || value > dev->battery_max)
606 return;
607
608 capacity = hidinput_scale_battery_capacity(dev, value);
609
610 if (dev->battery_status != HID_BATTERY_REPORTED ||
611 capacity != dev->battery_capacity ||
612 ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) {
613 dev->battery_capacity = capacity;
614 dev->battery_status = HID_BATTERY_REPORTED;
615 dev->battery_ratelimit_time =
616 ktime_add_ms(ktime_get_coarse(), 30 * 1000);
617 power_supply_changed(dev->battery);
618 }
619}
620
621static bool hidinput_set_battery_charge_status(struct hid_device *dev,
622 unsigned int usage, int value)
623{
624 switch (usage) {
625 case HID_BAT_CHARGING:
626 dev->battery_charge_status = value ?
627 POWER_SUPPLY_STATUS_CHARGING :
628 POWER_SUPPLY_STATUS_DISCHARGING;
629 return true;
630 }
631
632 return false;
633}
634#else /* !CONFIG_HID_BATTERY_STRENGTH */
635static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
636 struct hid_field *field, bool is_percentage)
637{
638 return 0;
639}
640
641static void hidinput_cleanup_battery(struct hid_device *dev)
642{
643}
644
645static void hidinput_update_battery(struct hid_device *dev, int value)
646{
647}
648
649static bool hidinput_set_battery_charge_status(struct hid_device *dev,
650 unsigned int usage, int value)
651{
652 return false;
653}
654#endif /* CONFIG_HID_BATTERY_STRENGTH */
655
656static bool hidinput_field_in_collection(struct hid_device *device, struct hid_field *field,
657 unsigned int type, unsigned int usage)
658{
659 struct hid_collection *collection;
660
661 collection = &device->collection[field->usage->collection_index];
662
663 return collection->type == type && collection->usage == usage;
664}
665
666static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
667 struct hid_usage *usage, unsigned int usage_index)
668{
669 struct input_dev *input = hidinput->input;
670 struct hid_device *device = input_get_drvdata(input);
671 const struct usage_priority *usage_priority = NULL;
672 int max = 0, code;
673 unsigned int i = 0;
674 unsigned long *bit = NULL;
675
676 field->hidinput = hidinput;
677
678 if (field->flags & HID_MAIN_ITEM_CONSTANT)
679 goto ignore;
680
681 /* Ignore if report count is out of bounds. */
682 if (field->report_count < 1)
683 goto ignore;
684
685 /* only LED usages are supported in output fields */
686 if (field->report_type == HID_OUTPUT_REPORT &&
687 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
688 goto ignore;
689 }
690
691 /* assign a priority based on the static list declared here */
692 for (i = 0; i < ARRAY_SIZE(hidinput_usages_priorities); i++) {
693 if (usage->hid == hidinput_usages_priorities[i].usage) {
694 usage_priority = &hidinput_usages_priorities[i];
695
696 field->usages_priorities[usage_index] =
697 (ARRAY_SIZE(hidinput_usages_priorities) - i) << 8;
698 break;
699 }
700 }
701
702 /*
703 * For slotted devices, we need to also add the slot index
704 * in the priority.
705 */
706 if (usage_priority && usage_priority->global)
707 field->usages_priorities[usage_index] |=
708 usage_priority->slot_overwrite;
709 else
710 field->usages_priorities[usage_index] |=
711 (0xff - field->slot_idx) << 16;
712
713 if (device->driver->input_mapping) {
714 int ret = device->driver->input_mapping(device, hidinput, field,
715 usage, &bit, &max);
716 if (ret > 0)
717 goto mapped;
718 if (ret < 0)
719 goto ignore;
720 }
721
722 switch (usage->hid & HID_USAGE_PAGE) {
723 case HID_UP_UNDEFINED:
724 goto ignore;
725
726 case HID_UP_KEYBOARD:
727 set_bit(EV_REP, input->evbit);
728
729 if ((usage->hid & HID_USAGE) < 256) {
730 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
731 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
732 } else
733 map_key(KEY_UNKNOWN);
734
735 break;
736
737 case HID_UP_BUTTON:
738 code = ((usage->hid - 1) & HID_USAGE);
739
740 switch (field->application) {
741 case HID_GD_MOUSE:
742 case HID_GD_POINTER: code += BTN_MOUSE; break;
743 case HID_GD_JOYSTICK:
744 if (code <= 0xf)
745 code += BTN_JOYSTICK;
746 else
747 code += BTN_TRIGGER_HAPPY - 0x10;
748 break;
749 case HID_GD_GAMEPAD:
750 if (code <= 0xf)
751 code += BTN_GAMEPAD;
752 else
753 code += BTN_TRIGGER_HAPPY - 0x10;
754 break;
755 case HID_CP_CONSUMER_CONTROL:
756 if (hidinput_field_in_collection(device, field,
757 HID_COLLECTION_NAMED_ARRAY,
758 HID_CP_PROGRAMMABLEBUTTONS)) {
759 if (code <= 0x1d)
760 code += KEY_MACRO1;
761 else
762 code += BTN_TRIGGER_HAPPY - 0x1e;
763 break;
764 }
765 fallthrough;
766 default:
767 switch (field->physical) {
768 case HID_GD_MOUSE:
769 case HID_GD_POINTER: code += BTN_MOUSE; break;
770 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
771 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
772 default: code += BTN_MISC;
773 }
774 }
775
776 map_key(code);
777 break;
778
779 case HID_UP_SIMULATION:
780 switch (usage->hid & 0xffff) {
781 case 0xba: map_abs(ABS_RUDDER); break;
782 case 0xbb: map_abs(ABS_THROTTLE); break;
783 case 0xc4: map_abs(ABS_GAS); break;
784 case 0xc5: map_abs(ABS_BRAKE); break;
785 case 0xc8: map_abs(ABS_WHEEL); break;
786 default: goto ignore;
787 }
788 break;
789
790 case HID_UP_GENDESK:
791 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
792 switch (usage->hid & 0xf) {
793 case 0x1: map_key_clear(KEY_POWER); break;
794 case 0x2: map_key_clear(KEY_SLEEP); break;
795 case 0x3: map_key_clear(KEY_WAKEUP); break;
796 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
797 case 0x5: map_key_clear(KEY_MENU); break;
798 case 0x6: map_key_clear(KEY_PROG1); break;
799 case 0x7: map_key_clear(KEY_HELP); break;
800 case 0x8: map_key_clear(KEY_EXIT); break;
801 case 0x9: map_key_clear(KEY_SELECT); break;
802 case 0xa: map_key_clear(KEY_RIGHT); break;
803 case 0xb: map_key_clear(KEY_LEFT); break;
804 case 0xc: map_key_clear(KEY_UP); break;
805 case 0xd: map_key_clear(KEY_DOWN); break;
806 case 0xe: map_key_clear(KEY_POWER2); break;
807 case 0xf: map_key_clear(KEY_RESTART); break;
808 default: goto unknown;
809 }
810 break;
811 }
812
813 if ((usage->hid & 0xf0) == 0x90) { /* SystemControl & 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 case HID_GD_DO_NOT_DISTURB:
820 map_key_clear(KEY_DO_NOT_DISTURB); break;
821 default: goto unknown;
822 }
823
824 if (usage->hid <= HID_GD_LEFT) {
825 if (field->dpad) {
826 map_abs(field->dpad);
827 goto ignore;
828 }
829 map_abs(ABS_HAT0X);
830 }
831 break;
832 }
833
834 if ((usage->hid & 0xf0) == 0xa0) { /* SystemControl */
835 switch (usage->hid & 0xf) {
836 case 0x9: map_key_clear(KEY_MICMUTE); break;
837 case 0xa: map_key_clear(KEY_ACCESSIBILITY); break;
838 default: goto ignore;
839 }
840 break;
841 }
842
843 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */
844 switch (usage->hid & 0xf) {
845 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break;
846 default: goto ignore;
847 }
848 break;
849 }
850
851 /*
852 * Some lazy vendors declare 255 usages for System Control,
853 * leading to the creation of ABS_X|Y axis and too many others.
854 * It wouldn't be a problem if joydev doesn't consider the
855 * device as a joystick then.
856 */
857 if (field->application == HID_GD_SYSTEM_CONTROL)
858 goto ignore;
859
860 switch (usage->hid) {
861 /* These usage IDs map directly to the usage codes. */
862 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
863 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
864 if (field->flags & HID_MAIN_ITEM_RELATIVE)
865 map_rel(usage->hid & 0xf);
866 else
867 map_abs_clear(usage->hid & 0xf);
868 break;
869
870 case HID_GD_WHEEL:
871 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
872 set_bit(REL_WHEEL, input->relbit);
873 map_rel(REL_WHEEL_HI_RES);
874 } else {
875 map_abs(usage->hid & 0xf);
876 }
877 break;
878 case HID_GD_SLIDER: case HID_GD_DIAL:
879 if (field->flags & HID_MAIN_ITEM_RELATIVE)
880 map_rel(usage->hid & 0xf);
881 else
882 map_abs(usage->hid & 0xf);
883 break;
884
885 case HID_GD_HATSWITCH:
886 usage->hat_min = field->logical_minimum;
887 usage->hat_max = field->logical_maximum;
888 map_abs(ABS_HAT0X);
889 break;
890
891 case HID_GD_START: map_key_clear(BTN_START); break;
892 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
893
894 case HID_GD_RFKILL_BTN:
895 /* MS wireless radio ctl extension, also check CA */
896 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
897 map_key_clear(KEY_RFKILL);
898 /* We need to simulate the btn release */
899 field->flags |= HID_MAIN_ITEM_RELATIVE;
900 break;
901 }
902 goto unknown;
903
904 default: goto unknown;
905 }
906
907 break;
908
909 case HID_UP_LED:
910 switch (usage->hid & 0xffff) { /* HID-Value: */
911 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
912 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
913 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
914 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
915 case 0x05: map_led (LED_KANA); break; /* "Kana" */
916 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
917 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
918 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
919 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
920 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
921 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
922
923 default: goto ignore;
924 }
925 break;
926
927 case HID_UP_DIGITIZER:
928 if ((field->application & 0xff) == 0x01) /* Digitizer */
929 __set_bit(INPUT_PROP_POINTER, input->propbit);
930 else if ((field->application & 0xff) == 0x02) /* Pen */
931 __set_bit(INPUT_PROP_DIRECT, input->propbit);
932
933 switch (usage->hid & 0xff) {
934 case 0x00: /* Undefined */
935 goto ignore;
936
937 case 0x30: /* TipPressure */
938 if (!test_bit(BTN_TOUCH, input->keybit)) {
939 device->quirks |= HID_QUIRK_NOTOUCH;
940 set_bit(EV_KEY, input->evbit);
941 set_bit(BTN_TOUCH, input->keybit);
942 }
943 map_abs_clear(ABS_PRESSURE);
944 break;
945
946 case 0x32: /* InRange */
947 switch (field->physical) {
948 case HID_DG_PUCK:
949 map_key(BTN_TOOL_MOUSE);
950 break;
951 case HID_DG_FINGER:
952 map_key(BTN_TOOL_FINGER);
953 break;
954 default:
955 /*
956 * If the physical is not given,
957 * rely on the application.
958 */
959 if (!field->physical) {
960 switch (field->application) {
961 case HID_DG_TOUCHSCREEN:
962 case HID_DG_TOUCHPAD:
963 map_key_clear(BTN_TOOL_FINGER);
964 break;
965 default:
966 map_key_clear(BTN_TOOL_PEN);
967 }
968 } else {
969 map_key(BTN_TOOL_PEN);
970 }
971 break;
972 }
973 break;
974
975 case 0x3b: /* Battery Strength */
976 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false);
977 usage->type = EV_PWR;
978 return;
979
980 case 0x3c: /* Invert */
981 device->quirks &= ~HID_QUIRK_NOINVERT;
982 map_key_clear(BTN_TOOL_RUBBER);
983 break;
984
985 case 0x3d: /* X Tilt */
986 map_abs_clear(ABS_TILT_X);
987 break;
988
989 case 0x3e: /* Y Tilt */
990 map_abs_clear(ABS_TILT_Y);
991 break;
992
993 case 0x33: /* Touch */
994 case 0x42: /* TipSwitch */
995 case 0x43: /* TipSwitch2 */
996 device->quirks &= ~HID_QUIRK_NOTOUCH;
997 map_key_clear(BTN_TOUCH);
998 break;
999
1000 case 0x44: /* BarrelSwitch */
1001 map_key_clear(BTN_STYLUS);
1002 break;
1003
1004 case 0x45: /* ERASER */
1005 /*
1006 * This event is reported when eraser tip touches the surface.
1007 * Actual eraser (BTN_TOOL_RUBBER) is set and released either
1008 * by Invert if tool reports proximity or by Eraser directly.
1009 */
1010 if (!test_bit(BTN_TOOL_RUBBER, input->keybit)) {
1011 device->quirks |= HID_QUIRK_NOINVERT;
1012 set_bit(BTN_TOOL_RUBBER, input->keybit);
1013 }
1014 map_key_clear(BTN_TOUCH);
1015 break;
1016
1017 case 0x46: /* TabletPick */
1018 case 0x5a: /* SecondaryBarrelSwitch */
1019 map_key_clear(BTN_STYLUS2);
1020 break;
1021
1022 case 0x5b: /* TransducerSerialNumber */
1023 case 0x6e: /* TransducerSerialNumber2 */
1024 map_msc(MSC_SERIAL);
1025 break;
1026
1027 default: goto unknown;
1028 }
1029 break;
1030
1031 case HID_UP_TELEPHONY:
1032 switch (usage->hid & HID_USAGE) {
1033 case 0x2f: map_key_clear(KEY_MICMUTE); break;
1034 case 0xb0: map_key_clear(KEY_NUMERIC_0); break;
1035 case 0xb1: map_key_clear(KEY_NUMERIC_1); break;
1036 case 0xb2: map_key_clear(KEY_NUMERIC_2); break;
1037 case 0xb3: map_key_clear(KEY_NUMERIC_3); break;
1038 case 0xb4: map_key_clear(KEY_NUMERIC_4); break;
1039 case 0xb5: map_key_clear(KEY_NUMERIC_5); break;
1040 case 0xb6: map_key_clear(KEY_NUMERIC_6); break;
1041 case 0xb7: map_key_clear(KEY_NUMERIC_7); break;
1042 case 0xb8: map_key_clear(KEY_NUMERIC_8); break;
1043 case 0xb9: map_key_clear(KEY_NUMERIC_9); break;
1044 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;
1045 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;
1046 case 0xbc: map_key_clear(KEY_NUMERIC_A); break;
1047 case 0xbd: map_key_clear(KEY_NUMERIC_B); break;
1048 case 0xbe: map_key_clear(KEY_NUMERIC_C); break;
1049 case 0xbf: map_key_clear(KEY_NUMERIC_D); break;
1050 default: goto ignore;
1051 }
1052 break;
1053
1054 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
1055 switch (usage->hid & HID_USAGE) {
1056 case 0x000: goto ignore;
1057 case 0x030: map_key_clear(KEY_POWER); break;
1058 case 0x031: map_key_clear(KEY_RESTART); break;
1059 case 0x032: map_key_clear(KEY_SLEEP); break;
1060 case 0x034: map_key_clear(KEY_SLEEP); break;
1061 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
1062 case 0x036: map_key_clear(BTN_MISC); break;
1063
1064 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
1065 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
1066 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
1067 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
1068 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
1069 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
1070 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
1071 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
1072 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
1073
1074 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
1075 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
1076 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
1077 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
1078 case 0x069: map_key_clear(KEY_RED); break;
1079 case 0x06a: map_key_clear(KEY_GREEN); break;
1080 case 0x06b: map_key_clear(KEY_BLUE); break;
1081 case 0x06c: map_key_clear(KEY_YELLOW); break;
1082 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break;
1083
1084 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
1085 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1086 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
1087 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
1088 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
1089 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
1090
1091 case 0x076: map_key_clear(KEY_CAMERA_ACCESS_ENABLE); break;
1092 case 0x077: map_key_clear(KEY_CAMERA_ACCESS_DISABLE); break;
1093 case 0x078: map_key_clear(KEY_CAMERA_ACCESS_TOGGLE); break;
1094
1095 case 0x079: map_key_clear(KEY_KBDILLUMUP); break;
1096 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break;
1097 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break;
1098
1099 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
1100 case 0x083: map_key_clear(KEY_LAST); break;
1101 case 0x084: map_key_clear(KEY_ENTER); break;
1102 case 0x088: map_key_clear(KEY_PC); break;
1103 case 0x089: map_key_clear(KEY_TV); break;
1104 case 0x08a: map_key_clear(KEY_WWW); break;
1105 case 0x08b: map_key_clear(KEY_DVD); break;
1106 case 0x08c: map_key_clear(KEY_PHONE); break;
1107 case 0x08d: map_key_clear(KEY_PROGRAM); break;
1108 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
1109 case 0x08f: map_key_clear(KEY_GAMES); break;
1110 case 0x090: map_key_clear(KEY_MEMO); break;
1111 case 0x091: map_key_clear(KEY_CD); break;
1112 case 0x092: map_key_clear(KEY_VCR); break;
1113 case 0x093: map_key_clear(KEY_TUNER); break;
1114 case 0x094: map_key_clear(KEY_EXIT); break;
1115 case 0x095: map_key_clear(KEY_HELP); break;
1116 case 0x096: map_key_clear(KEY_TAPE); break;
1117 case 0x097: map_key_clear(KEY_TV2); break;
1118 case 0x098: map_key_clear(KEY_SAT); break;
1119 case 0x09a: map_key_clear(KEY_PVR); break;
1120
1121 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
1122 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
1123 case 0x0a0: map_key_clear(KEY_VCR2); break;
1124
1125 case 0x0b0: map_key_clear(KEY_PLAY); break;
1126 case 0x0b1: map_key_clear(KEY_PAUSE); break;
1127 case 0x0b2: map_key_clear(KEY_RECORD); break;
1128 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
1129 case 0x0b4: map_key_clear(KEY_REWIND); break;
1130 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
1131 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
1132 case 0x0b7: map_key_clear(KEY_STOPCD); break;
1133 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
1134 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
1135 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
1136 case 0x0bf: map_key_clear(KEY_SLOW); break;
1137
1138 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
1139 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
1140
1141 case 0x0d8: map_key_clear(KEY_DICTATE); break;
1142 case 0x0d9: map_key_clear(KEY_EMOJI_PICKER); break;
1143
1144 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
1145 case 0x0e2: map_key_clear(KEY_MUTE); break;
1146 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
1147 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
1148 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
1149 case 0x0f5: map_key_clear(KEY_SLOW); break;
1150
1151 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
1152 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
1153 case 0x183: map_key_clear(KEY_CONFIG); break;
1154 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
1155 case 0x185: map_key_clear(KEY_EDITOR); break;
1156 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
1157 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
1158 case 0x188: map_key_clear(KEY_PRESENTATION); break;
1159 case 0x189: map_key_clear(KEY_DATABASE); break;
1160 case 0x18a: map_key_clear(KEY_MAIL); break;
1161 case 0x18b: map_key_clear(KEY_NEWS); break;
1162 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
1163 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
1164 case 0x18e: map_key_clear(KEY_CALENDAR); break;
1165 case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
1166 case 0x190: map_key_clear(KEY_JOURNAL); break;
1167 case 0x191: map_key_clear(KEY_FINANCE); break;
1168 case 0x192: map_key_clear(KEY_CALC); break;
1169 case 0x193: map_key_clear(KEY_PLAYER); break;
1170 case 0x194: map_key_clear(KEY_FILE); break;
1171 case 0x196: map_key_clear(KEY_WWW); break;
1172 case 0x199: map_key_clear(KEY_CHAT); break;
1173 case 0x19c: map_key_clear(KEY_LOGOFF); break;
1174 case 0x19e: map_key_clear(KEY_COFFEE); break;
1175 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
1176 case 0x1a2: map_key_clear(KEY_APPSELECT); break;
1177 case 0x1a3: map_key_clear(KEY_NEXT); break;
1178 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
1179 case 0x1a6: map_key_clear(KEY_HELP); break;
1180 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
1181 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
1182 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
1183 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
1184 case 0x1b4: map_key_clear(KEY_FILE); break;
1185 case 0x1b6: map_key_clear(KEY_IMAGES); break;
1186 case 0x1b7: map_key_clear(KEY_AUDIO); break;
1187 case 0x1b8: map_key_clear(KEY_VIDEO); break;
1188 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
1189 case 0x1bd: map_key_clear(KEY_INFO); break;
1190 case 0x1cb: map_key_clear(KEY_ASSISTANT); break;
1191 case 0x201: map_key_clear(KEY_NEW); break;
1192 case 0x202: map_key_clear(KEY_OPEN); break;
1193 case 0x203: map_key_clear(KEY_CLOSE); break;
1194 case 0x204: map_key_clear(KEY_EXIT); break;
1195 case 0x207: map_key_clear(KEY_SAVE); break;
1196 case 0x208: map_key_clear(KEY_PRINT); break;
1197 case 0x209: map_key_clear(KEY_PROPS); break;
1198 case 0x21a: map_key_clear(KEY_UNDO); break;
1199 case 0x21b: map_key_clear(KEY_COPY); break;
1200 case 0x21c: map_key_clear(KEY_CUT); break;
1201 case 0x21d: map_key_clear(KEY_PASTE); break;
1202 case 0x21f: map_key_clear(KEY_FIND); break;
1203 case 0x221: map_key_clear(KEY_SEARCH); break;
1204 case 0x222: map_key_clear(KEY_GOTO); break;
1205 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
1206 case 0x224: map_key_clear(KEY_BACK); break;
1207 case 0x225: map_key_clear(KEY_FORWARD); break;
1208 case 0x226: map_key_clear(KEY_STOP); break;
1209 case 0x227: map_key_clear(KEY_REFRESH); break;
1210 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
1211 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
1212 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
1213 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
1214 case 0x232: map_key_clear(KEY_FULL_SCREEN); break;
1215 case 0x233: map_key_clear(KEY_SCROLLUP); break;
1216 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
1217 case 0x238: /* AC Pan */
1218 set_bit(REL_HWHEEL, input->relbit);
1219 map_rel(REL_HWHEEL_HI_RES);
1220 break;
1221 case 0x23d: map_key_clear(KEY_EDIT); break;
1222 case 0x25f: map_key_clear(KEY_CANCEL); break;
1223 case 0x269: map_key_clear(KEY_INSERT); break;
1224 case 0x26a: map_key_clear(KEY_DELETE); break;
1225 case 0x279: map_key_clear(KEY_REDO); break;
1226
1227 case 0x289: map_key_clear(KEY_REPLY); break;
1228 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
1229 case 0x28c: map_key_clear(KEY_SEND); break;
1230
1231 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break;
1232
1233 case 0x2a2: map_key_clear(KEY_ALL_APPLICATIONS); break;
1234
1235 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
1236 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
1237 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
1238 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
1239 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
1240 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
1241
1242 case 0x29f: map_key_clear(KEY_SCALE); break;
1243
1244 default: map_key_clear(KEY_UNKNOWN);
1245 }
1246 break;
1247
1248 case HID_UP_GENDEVCTRLS:
1249 switch (usage->hid) {
1250 case HID_DC_BATTERYSTRENGTH:
1251 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false);
1252 usage->type = EV_PWR;
1253 return;
1254 }
1255 goto unknown;
1256
1257 case HID_UP_BATTERY:
1258 switch (usage->hid) {
1259 case HID_BAT_ABSOLUTESTATEOFCHARGE:
1260 hidinput_setup_battery(device, HID_INPUT_REPORT, field, true);
1261 usage->type = EV_PWR;
1262 return;
1263 case HID_BAT_CHARGING:
1264 usage->type = EV_PWR;
1265 return;
1266 }
1267 goto unknown;
1268 case HID_UP_CAMERA:
1269 switch (usage->hid & HID_USAGE) {
1270 case 0x020:
1271 map_key_clear(KEY_CAMERA_FOCUS); break;
1272 case 0x021:
1273 map_key_clear(KEY_CAMERA); break;
1274 default:
1275 goto ignore;
1276 }
1277 break;
1278
1279 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
1280 set_bit(EV_REP, input->evbit);
1281 switch (usage->hid & HID_USAGE) {
1282 case 0x021: map_key_clear(KEY_PRINT); break;
1283 case 0x070: map_key_clear(KEY_HP); break;
1284 case 0x071: map_key_clear(KEY_CAMERA); break;
1285 case 0x072: map_key_clear(KEY_SOUND); break;
1286 case 0x073: map_key_clear(KEY_QUESTION); break;
1287 case 0x080: map_key_clear(KEY_EMAIL); break;
1288 case 0x081: map_key_clear(KEY_CHAT); break;
1289 case 0x082: map_key_clear(KEY_SEARCH); break;
1290 case 0x083: map_key_clear(KEY_CONNECT); break;
1291 case 0x084: map_key_clear(KEY_FINANCE); break;
1292 case 0x085: map_key_clear(KEY_SPORT); break;
1293 case 0x086: map_key_clear(KEY_SHOP); break;
1294 default: goto ignore;
1295 }
1296 break;
1297
1298 case HID_UP_HPVENDOR2:
1299 set_bit(EV_REP, input->evbit);
1300 switch (usage->hid & HID_USAGE) {
1301 case 0x001: map_key_clear(KEY_MICMUTE); break;
1302 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1303 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
1304 default: goto ignore;
1305 }
1306 break;
1307
1308 case HID_UP_MSVENDOR:
1309 goto ignore;
1310
1311 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
1312 set_bit(EV_REP, input->evbit);
1313 goto ignore;
1314
1315 case HID_UP_LOGIVENDOR:
1316 /* intentional fallback */
1317 case HID_UP_LOGIVENDOR2:
1318 /* intentional fallback */
1319 case HID_UP_LOGIVENDOR3:
1320 goto ignore;
1321
1322 case HID_UP_PID:
1323 switch (usage->hid & HID_USAGE) {
1324 case 0xa4: map_key_clear(BTN_DEAD); break;
1325 default: goto ignore;
1326 }
1327 break;
1328
1329 default:
1330 unknown:
1331 if (field->report_size == 1) {
1332 if (field->report->type == HID_OUTPUT_REPORT) {
1333 map_led(LED_MISC);
1334 break;
1335 }
1336 map_key(BTN_MISC);
1337 break;
1338 }
1339 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
1340 map_rel(REL_MISC);
1341 break;
1342 }
1343 map_abs(ABS_MISC);
1344 break;
1345 }
1346
1347mapped:
1348 /* Mapping failed, bail out */
1349 if (!bit)
1350 return;
1351
1352 if (device->driver->input_mapped &&
1353 device->driver->input_mapped(device, hidinput, field, usage,
1354 &bit, &max) < 0) {
1355 /*
1356 * The driver indicated that no further generic handling
1357 * of the usage is desired.
1358 */
1359 return;
1360 }
1361
1362 set_bit(usage->type, input->evbit);
1363
1364 /*
1365 * This part is *really* controversial:
1366 * - HID aims at being generic so we should do our best to export
1367 * all incoming events
1368 * - HID describes what events are, so there is no reason for ABS_X
1369 * to be mapped to ABS_Y
1370 * - HID is using *_MISC+N as a default value, but nothing prevents
1371 * *_MISC+N to overwrite a legitimate even, which confuses userspace
1372 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different
1373 * processing)
1374 *
1375 * If devices still want to use this (at their own risk), they will
1376 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but
1377 * the default should be a reliable mapping.
1378 */
1379 while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
1380 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {
1381 usage->code = find_next_zero_bit(bit,
1382 max + 1,
1383 usage->code);
1384 } else {
1385 device->status |= HID_STAT_DUP_DETECTED;
1386 goto ignore;
1387 }
1388 }
1389
1390 if (usage->code > max)
1391 goto ignore;
1392
1393 if (usage->type == EV_ABS) {
1394
1395 int a = field->logical_minimum;
1396 int b = field->logical_maximum;
1397
1398 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1399 a = field->logical_minimum = 0;
1400 b = field->logical_maximum = 255;
1401 }
1402
1403 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1404 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
1405 else input_set_abs_params(input, usage->code, a, b, 0, 0);
1406
1407 input_abs_set_res(input, usage->code,
1408 hidinput_calc_abs_res(field, usage->code));
1409
1410 /* use a larger default input buffer for MT devices */
1411 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1412 input_set_events_per_packet(input, 60);
1413 }
1414
1415 if (usage->type == EV_ABS &&
1416 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
1417 int i;
1418 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1419 input_set_abs_params(input, i, -1, 1, 0, 0);
1420 set_bit(i, input->absbit);
1421 }
1422 if (usage->hat_dir && !field->dpad)
1423 field->dpad = usage->code;
1424 }
1425
1426 /* for those devices which produce Consumer volume usage as relative,
1427 * we emulate pressing volumeup/volumedown appropriate number of times
1428 * in hidinput_hid_event()
1429 */
1430 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1431 (usage->code == ABS_VOLUME)) {
1432 set_bit(KEY_VOLUMEUP, input->keybit);
1433 set_bit(KEY_VOLUMEDOWN, input->keybit);
1434 }
1435
1436 if (usage->type == EV_KEY) {
1437 set_bit(EV_MSC, input->evbit);
1438 set_bit(MSC_SCAN, input->mscbit);
1439 }
1440
1441 return;
1442
1443ignore:
1444 usage->type = 0;
1445 usage->code = 0;
1446}
1447
1448static void hidinput_handle_scroll(struct hid_usage *usage,
1449 struct input_dev *input,
1450 __s32 value)
1451{
1452 int code;
1453 int hi_res, lo_res;
1454
1455 if (value == 0)
1456 return;
1457
1458 if (usage->code == REL_WHEEL_HI_RES)
1459 code = REL_WHEEL;
1460 else
1461 code = REL_HWHEEL;
1462
1463 /*
1464 * Windows reports one wheel click as value 120. Where a high-res
1465 * scroll wheel is present, a fraction of 120 is reported instead.
1466 * Our REL_WHEEL_HI_RES axis does the same because all HW must
1467 * adhere to the 120 expectation.
1468 */
1469 hi_res = value * 120/usage->resolution_multiplier;
1470
1471 usage->wheel_accumulated += hi_res;
1472 lo_res = usage->wheel_accumulated/120;
1473 if (lo_res)
1474 usage->wheel_accumulated -= lo_res * 120;
1475
1476 input_event(input, EV_REL, code, lo_res);
1477 input_event(input, EV_REL, usage->code, hi_res);
1478}
1479
1480static void hid_report_release_tool(struct hid_report *report, struct input_dev *input,
1481 unsigned int tool)
1482{
1483 /* if the given tool is not currently reported, ignore */
1484 if (!test_bit(tool, input->key))
1485 return;
1486
1487 /*
1488 * if the given tool was previously set, release it,
1489 * release any TOUCH and send an EV_SYN
1490 */
1491 input_event(input, EV_KEY, BTN_TOUCH, 0);
1492 input_event(input, EV_KEY, tool, 0);
1493 input_event(input, EV_SYN, SYN_REPORT, 0);
1494
1495 report->tool = 0;
1496}
1497
1498static void hid_report_set_tool(struct hid_report *report, struct input_dev *input,
1499 unsigned int new_tool)
1500{
1501 if (report->tool != new_tool)
1502 hid_report_release_tool(report, input, report->tool);
1503
1504 input_event(input, EV_KEY, new_tool, 1);
1505 report->tool = new_tool;
1506}
1507
1508void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1509{
1510 struct input_dev *input;
1511 struct hid_report *report = field->report;
1512 unsigned *quirks = &hid->quirks;
1513
1514 if (!usage->type)
1515 return;
1516
1517 if (usage->type == EV_PWR) {
1518 bool handled = hidinput_set_battery_charge_status(hid, usage->hid, value);
1519
1520 if (!handled)
1521 hidinput_update_battery(hid, value);
1522
1523 return;
1524 }
1525
1526 if (!field->hidinput)
1527 return;
1528
1529 input = field->hidinput->input;
1530
1531 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1532 int hat_dir = usage->hat_dir;
1533 if (!hat_dir)
1534 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1535 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1536 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
1537 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1538 return;
1539 }
1540
1541 /*
1542 * Ignore out-of-range values as per HID specification,
1543 * section 5.10 and 6.2.25, when NULL state bit is present.
1544 * When it's not, clamp the value to match Microsoft's input
1545 * driver as mentioned in "Required HID usages for digitizers":
1546 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
1547 *
1548 * The logical_minimum < logical_maximum check is done so that we
1549 * don't unintentionally discard values sent by devices which
1550 * don't specify logical min and max.
1551 */
1552 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1553 field->logical_minimum < field->logical_maximum) {
1554 if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
1555 (value < field->logical_minimum ||
1556 value > field->logical_maximum)) {
1557 dbg_hid("Ignoring out-of-range value %x\n", value);
1558 return;
1559 }
1560 value = clamp(value,
1561 field->logical_minimum,
1562 field->logical_maximum);
1563 }
1564
1565 switch (usage->hid) {
1566 case HID_DG_ERASER:
1567 report->tool_active |= !!value;
1568
1569 /*
1570 * if eraser is set, we must enforce BTN_TOOL_RUBBER
1571 * to accommodate for devices not following the spec.
1572 */
1573 if (value)
1574 hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1575 else if (report->tool != BTN_TOOL_RUBBER)
1576 /* value is off, tool is not rubber, ignore */
1577 return;
1578 else if (*quirks & HID_QUIRK_NOINVERT &&
1579 !test_bit(BTN_TOUCH, input->key)) {
1580 /*
1581 * There is no invert to release the tool, let hid_input
1582 * send BTN_TOUCH with scancode and release the tool after.
1583 */
1584 hid_report_release_tool(report, input, BTN_TOOL_RUBBER);
1585 return;
1586 }
1587
1588 /* let hid-input set BTN_TOUCH */
1589 break;
1590
1591 case HID_DG_INVERT:
1592 report->tool_active |= !!value;
1593
1594 /*
1595 * If invert is set, we store BTN_TOOL_RUBBER.
1596 */
1597 if (value)
1598 hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1599 else if (!report->tool_active)
1600 /* tool_active not set means Invert and Eraser are not set */
1601 hid_report_release_tool(report, input, BTN_TOOL_RUBBER);
1602
1603 /* no further processing */
1604 return;
1605
1606 case HID_DG_INRANGE:
1607 report->tool_active |= !!value;
1608
1609 if (report->tool_active) {
1610 /*
1611 * if tool is not set but is marked as active,
1612 * assume ours
1613 */
1614 if (!report->tool)
1615 report->tool = usage->code;
1616
1617 /* drivers may have changed the value behind our back, resend it */
1618 hid_report_set_tool(report, input, report->tool);
1619 } else {
1620 hid_report_release_tool(report, input, usage->code);
1621 }
1622
1623 /* reset tool_active for the next event */
1624 report->tool_active = false;
1625
1626 /* no further processing */
1627 return;
1628
1629 case HID_DG_TIPSWITCH:
1630 report->tool_active |= !!value;
1631
1632 /* if tool is set to RUBBER we should ignore the current value */
1633 if (report->tool == BTN_TOOL_RUBBER)
1634 return;
1635
1636 break;
1637
1638 case HID_DG_TIPPRESSURE:
1639 if (*quirks & HID_QUIRK_NOTOUCH) {
1640 int a = field->logical_minimum;
1641 int b = field->logical_maximum;
1642
1643 if (value > a + ((b - a) >> 3)) {
1644 input_event(input, EV_KEY, BTN_TOUCH, 1);
1645 report->tool_active = true;
1646 }
1647 }
1648 break;
1649
1650 case HID_UP_PID | 0x83UL: /* Simultaneous Effects Max */
1651 dbg_hid("Maximum Effects - %d\n",value);
1652 return;
1653
1654 case HID_UP_PID | 0x7fUL:
1655 dbg_hid("PID Pool Report\n");
1656 return;
1657 }
1658
1659 switch (usage->type) {
1660 case EV_KEY:
1661 if (usage->code == 0) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1662 return;
1663 break;
1664
1665 case EV_REL:
1666 if (usage->code == REL_WHEEL_HI_RES ||
1667 usage->code == REL_HWHEEL_HI_RES) {
1668 hidinput_handle_scroll(usage, input, value);
1669 return;
1670 }
1671 break;
1672
1673 case EV_ABS:
1674 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1675 usage->code == ABS_VOLUME) {
1676 int count = abs(value);
1677 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1678 int i;
1679
1680 for (i = 0; i < count; i++) {
1681 input_event(input, EV_KEY, direction, 1);
1682 input_sync(input);
1683 input_event(input, EV_KEY, direction, 0);
1684 input_sync(input);
1685 }
1686 return;
1687
1688 } else if (((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) ||
1689 ((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y))
1690 value = field->logical_maximum - value;
1691 break;
1692 }
1693
1694 /*
1695 * Ignore reports for absolute data if the data didn't change. This is
1696 * not only an optimization but also fixes 'dead' key reports. Some
1697 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1698 * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1699 * can only have one of them physically available. The 'dead' keys
1700 * report constant 0. As all map to the same keycode, they'd confuse
1701 * the input layer. If we filter the 'dead' keys on the HID level, we
1702 * skip the keycode translation and only forward real events.
1703 */
1704 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1705 HID_MAIN_ITEM_BUFFERED_BYTE)) &&
1706 (field->flags & HID_MAIN_ITEM_VARIABLE) &&
1707 usage->usage_index < field->maxusage &&
1708 value == field->value[usage->usage_index])
1709 return;
1710
1711 /* report the usage code as scancode if the key status has changed */
1712 if (usage->type == EV_KEY &&
1713 (!test_bit(usage->code, input->key)) == value)
1714 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1715
1716 input_event(input, usage->type, usage->code, value);
1717
1718 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1719 usage->type == EV_KEY && value) {
1720 input_sync(input);
1721 input_event(input, usage->type, usage->code, 0);
1722 }
1723}
1724
1725void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1726{
1727 struct hid_input *hidinput;
1728
1729 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1730 return;
1731
1732 list_for_each_entry(hidinput, &hid->inputs, list)
1733 input_sync(hidinput->input);
1734}
1735EXPORT_SYMBOL_GPL(hidinput_report_event);
1736
1737static int hidinput_find_field(struct hid_device *hid, unsigned int type,
1738 unsigned int code, struct hid_field **field)
1739{
1740 struct hid_report *report;
1741 int i, j;
1742
1743 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1744 for (i = 0; i < report->maxfield; i++) {
1745 *field = report->field[i];
1746 for (j = 0; j < (*field)->maxusage; j++)
1747 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1748 return j;
1749 }
1750 }
1751 return -1;
1752}
1753
1754struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1755{
1756 struct hid_report *report;
1757 struct hid_field *field;
1758 int i, j;
1759
1760 list_for_each_entry(report,
1761 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1762 list) {
1763 for (i = 0; i < report->maxfield; i++) {
1764 field = report->field[i];
1765 for (j = 0; j < field->maxusage; j++)
1766 if (field->usage[j].type == EV_LED)
1767 return field;
1768 }
1769 }
1770 return NULL;
1771}
1772EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1773
1774unsigned int hidinput_count_leds(struct hid_device *hid)
1775{
1776 struct hid_report *report;
1777 struct hid_field *field;
1778 int i, j;
1779 unsigned int count = 0;
1780
1781 list_for_each_entry(report,
1782 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1783 list) {
1784 for (i = 0; i < report->maxfield; i++) {
1785 field = report->field[i];
1786 for (j = 0; j < field->maxusage; j++)
1787 if (field->usage[j].type == EV_LED &&
1788 field->value[j])
1789 count += 1;
1790 }
1791 }
1792 return count;
1793}
1794EXPORT_SYMBOL_GPL(hidinput_count_leds);
1795
1796static void hidinput_led_worker(struct work_struct *work)
1797{
1798 struct hid_device *hid = container_of(work, struct hid_device,
1799 led_work);
1800 struct hid_field *field;
1801 struct hid_report *report;
1802 int ret;
1803 u32 len;
1804 __u8 *buf;
1805
1806 field = hidinput_get_led_field(hid);
1807 if (!field)
1808 return;
1809
1810 /*
1811 * field->report is accessed unlocked regarding HID core. So there might
1812 * be another incoming SET-LED request from user-space, which changes
1813 * the LED state while we assemble our outgoing buffer. However, this
1814 * doesn't matter as hid_output_report() correctly converts it into a
1815 * boolean value no matter what information is currently set on the LED
1816 * field (even garbage). So the remote device will always get a valid
1817 * request.
1818 * And in case we send a wrong value, a next led worker is spawned
1819 * for every SET-LED request so the following worker will send the
1820 * correct value, guaranteed!
1821 */
1822
1823 report = field->report;
1824
1825 /* use custom SET_REPORT request if possible (asynchronous) */
1826 if (hid->ll_driver->request)
1827 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1828
1829 /* fall back to generic raw-output-report */
1830 len = hid_report_len(report);
1831 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1832 if (!buf)
1833 return;
1834
1835 hid_output_report(report, buf);
1836 /* synchronous output report */
1837 ret = hid_hw_output_report(hid, buf, len);
1838 if (ret == -ENOSYS)
1839 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1840 HID_REQ_SET_REPORT);
1841 kfree(buf);
1842}
1843
1844static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1845 unsigned int code, int value)
1846{
1847 struct hid_device *hid = input_get_drvdata(dev);
1848 struct hid_field *field;
1849 int offset;
1850
1851 if (type == EV_FF)
1852 return input_ff_event(dev, type, code, value);
1853
1854 if (type != EV_LED)
1855 return -1;
1856
1857 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1858 hid_warn(dev, "event field not found\n");
1859 return -1;
1860 }
1861
1862 hid_set_field(field, offset, value);
1863
1864 schedule_work(&hid->led_work);
1865 return 0;
1866}
1867
1868static int hidinput_open(struct input_dev *dev)
1869{
1870 struct hid_device *hid = input_get_drvdata(dev);
1871
1872 return hid_hw_open(hid);
1873}
1874
1875static void hidinput_close(struct input_dev *dev)
1876{
1877 struct hid_device *hid = input_get_drvdata(dev);
1878
1879 hid_hw_close(hid);
1880}
1881
1882static bool __hidinput_change_resolution_multipliers(struct hid_device *hid,
1883 struct hid_report *report, bool use_logical_max)
1884{
1885 struct hid_usage *usage;
1886 bool update_needed = false;
1887 bool get_report_completed = false;
1888 int i, j;
1889
1890 if (report->maxfield == 0)
1891 return false;
1892
1893 for (i = 0; i < report->maxfield; i++) {
1894 __s32 value = use_logical_max ?
1895 report->field[i]->logical_maximum :
1896 report->field[i]->logical_minimum;
1897
1898 /* There is no good reason for a Resolution
1899 * Multiplier to have a count other than 1.
1900 * Ignore that case.
1901 */
1902 if (report->field[i]->report_count != 1)
1903 continue;
1904
1905 for (j = 0; j < report->field[i]->maxusage; j++) {
1906 usage = &report->field[i]->usage[j];
1907
1908 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER)
1909 continue;
1910
1911 /*
1912 * If we have more than one feature within this
1913 * report we need to fill in the bits from the
1914 * others before we can overwrite the ones for the
1915 * Resolution Multiplier.
1916 *
1917 * But if we're not allowed to read from the device,
1918 * we just bail. Such a device should not exist
1919 * anyway.
1920 */
1921 if (!get_report_completed && report->maxfield > 1) {
1922 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS)
1923 return update_needed;
1924
1925 hid_hw_request(hid, report, HID_REQ_GET_REPORT);
1926 hid_hw_wait(hid);
1927 get_report_completed = true;
1928 }
1929
1930 report->field[i]->value[j] = value;
1931 update_needed = true;
1932 }
1933 }
1934
1935 return update_needed;
1936}
1937
1938static void hidinput_change_resolution_multipliers(struct hid_device *hid)
1939{
1940 struct hid_report_enum *rep_enum;
1941 struct hid_report *rep;
1942 int ret;
1943
1944 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1945 list_for_each_entry(rep, &rep_enum->report_list, list) {
1946 bool update_needed = __hidinput_change_resolution_multipliers(hid,
1947 rep, true);
1948
1949 if (update_needed) {
1950 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT);
1951 if (ret) {
1952 __hidinput_change_resolution_multipliers(hid,
1953 rep, false);
1954 return;
1955 }
1956 }
1957 }
1958
1959 /* refresh our structs */
1960 hid_setup_resolution_multiplier(hid);
1961}
1962
1963static void report_features(struct hid_device *hid)
1964{
1965 struct hid_driver *drv = hid->driver;
1966 struct hid_report_enum *rep_enum;
1967 struct hid_report *rep;
1968 struct hid_usage *usage;
1969 int i, j;
1970
1971 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1972 list_for_each_entry(rep, &rep_enum->report_list, list)
1973 for (i = 0; i < rep->maxfield; i++) {
1974 /* Ignore if report count is out of bounds. */
1975 if (rep->field[i]->report_count < 1)
1976 continue;
1977
1978 for (j = 0; j < rep->field[i]->maxusage; j++) {
1979 usage = &rep->field[i]->usage[j];
1980
1981 /* Verify if Battery Strength feature is available */
1982 if (usage->hid == HID_DC_BATTERYSTRENGTH)
1983 hidinput_setup_battery(hid, HID_FEATURE_REPORT,
1984 rep->field[i], false);
1985
1986 if (drv->feature_mapping)
1987 drv->feature_mapping(hid, rep->field[i], usage);
1988 }
1989 }
1990}
1991
1992static struct hid_input *hidinput_allocate(struct hid_device *hid,
1993 unsigned int application)
1994{
1995 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1996 struct input_dev *input_dev = input_allocate_device();
1997 const char *suffix = NULL;
1998 size_t suffix_len, name_len;
1999
2000 if (!hidinput || !input_dev)
2001 goto fail;
2002
2003 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&
2004 hid->maxapplication > 1) {
2005 switch (application) {
2006 case HID_GD_KEYBOARD:
2007 suffix = "Keyboard";
2008 break;
2009 case HID_GD_KEYPAD:
2010 suffix = "Keypad";
2011 break;
2012 case HID_GD_MOUSE:
2013 suffix = "Mouse";
2014 break;
2015 case HID_DG_PEN:
2016 /*
2017 * yes, there is an issue here:
2018 * DG_PEN -> "Stylus"
2019 * DG_STYLUS -> "Pen"
2020 * But changing this now means users with config snippets
2021 * will have to change it and the test suite will not be happy.
2022 */
2023 suffix = "Stylus";
2024 break;
2025 case HID_DG_STYLUS:
2026 suffix = "Pen";
2027 break;
2028 case HID_DG_TOUCHSCREEN:
2029 suffix = "Touchscreen";
2030 break;
2031 case HID_DG_TOUCHPAD:
2032 suffix = "Touchpad";
2033 break;
2034 case HID_GD_SYSTEM_CONTROL:
2035 suffix = "System Control";
2036 break;
2037 case HID_CP_CONSUMER_CONTROL:
2038 suffix = "Consumer Control";
2039 break;
2040 case HID_GD_WIRELESS_RADIO_CTLS:
2041 suffix = "Wireless Radio Control";
2042 break;
2043 case HID_GD_SYSTEM_MULTIAXIS:
2044 suffix = "System Multi Axis";
2045 break;
2046 default:
2047 break;
2048 }
2049 }
2050
2051 if (suffix) {
2052 name_len = strlen(hid->name);
2053 suffix_len = strlen(suffix);
2054 if ((name_len < suffix_len) ||
2055 strcmp(hid->name + name_len - suffix_len, suffix)) {
2056 hidinput->name = kasprintf(GFP_KERNEL, "%s %s",
2057 hid->name, suffix);
2058 if (!hidinput->name)
2059 goto fail;
2060 }
2061 }
2062
2063 input_set_drvdata(input_dev, hid);
2064 input_dev->event = hidinput_input_event;
2065 input_dev->open = hidinput_open;
2066 input_dev->close = hidinput_close;
2067 input_dev->setkeycode = hidinput_setkeycode;
2068 input_dev->getkeycode = hidinput_getkeycode;
2069
2070 input_dev->name = hidinput->name ? hidinput->name : hid->name;
2071 input_dev->phys = hid->phys;
2072 input_dev->uniq = hid->uniq;
2073 input_dev->id.bustype = hid->bus;
2074 input_dev->id.vendor = hid->vendor;
2075 input_dev->id.product = hid->product;
2076 input_dev->id.version = hid->version;
2077 input_dev->dev.parent = &hid->dev;
2078
2079 hidinput->input = input_dev;
2080 hidinput->application = application;
2081 list_add_tail(&hidinput->list, &hid->inputs);
2082
2083 INIT_LIST_HEAD(&hidinput->reports);
2084
2085 return hidinput;
2086
2087fail:
2088 kfree(hidinput);
2089 input_free_device(input_dev);
2090 hid_err(hid, "Out of memory during hid input probe\n");
2091 return NULL;
2092}
2093
2094static bool hidinput_has_been_populated(struct hid_input *hidinput)
2095{
2096 int i;
2097 unsigned long r = 0;
2098
2099 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
2100 r |= hidinput->input->evbit[i];
2101
2102 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
2103 r |= hidinput->input->keybit[i];
2104
2105 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
2106 r |= hidinput->input->relbit[i];
2107
2108 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
2109 r |= hidinput->input->absbit[i];
2110
2111 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
2112 r |= hidinput->input->mscbit[i];
2113
2114 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
2115 r |= hidinput->input->ledbit[i];
2116
2117 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
2118 r |= hidinput->input->sndbit[i];
2119
2120 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
2121 r |= hidinput->input->ffbit[i];
2122
2123 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
2124 r |= hidinput->input->swbit[i];
2125
2126 return !!r;
2127}
2128
2129static void hidinput_cleanup_hidinput(struct hid_device *hid,
2130 struct hid_input *hidinput)
2131{
2132 struct hid_report *report;
2133 int i, k;
2134
2135 list_del(&hidinput->list);
2136 input_free_device(hidinput->input);
2137 kfree(hidinput->name);
2138
2139 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
2140 if (k == HID_OUTPUT_REPORT &&
2141 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2142 continue;
2143
2144 list_for_each_entry(report, &hid->report_enum[k].report_list,
2145 list) {
2146
2147 for (i = 0; i < report->maxfield; i++)
2148 if (report->field[i]->hidinput == hidinput)
2149 report->field[i]->hidinput = NULL;
2150 }
2151 }
2152
2153 kfree(hidinput);
2154}
2155
2156static struct hid_input *hidinput_match(struct hid_report *report)
2157{
2158 struct hid_device *hid = report->device;
2159 struct hid_input *hidinput;
2160
2161 list_for_each_entry(hidinput, &hid->inputs, list) {
2162 if (hidinput->report &&
2163 hidinput->report->id == report->id)
2164 return hidinput;
2165 }
2166
2167 return NULL;
2168}
2169
2170static struct hid_input *hidinput_match_application(struct hid_report *report)
2171{
2172 struct hid_device *hid = report->device;
2173 struct hid_input *hidinput;
2174
2175 list_for_each_entry(hidinput, &hid->inputs, list) {
2176 if (hidinput->application == report->application)
2177 return hidinput;
2178
2179 /*
2180 * Keep SystemControl and ConsumerControl applications together
2181 * with the main keyboard, if present.
2182 */
2183 if ((report->application == HID_GD_SYSTEM_CONTROL ||
2184 report->application == HID_CP_CONSUMER_CONTROL) &&
2185 hidinput->application == HID_GD_KEYBOARD) {
2186 return hidinput;
2187 }
2188 }
2189
2190 return NULL;
2191}
2192
2193static inline void hidinput_configure_usages(struct hid_input *hidinput,
2194 struct hid_report *report)
2195{
2196 int i, j, k;
2197 int first_field_index = 0;
2198 int slot_collection_index = -1;
2199 int prev_collection_index = -1;
2200 unsigned int slot_idx = 0;
2201 struct hid_field *field;
2202
2203 /*
2204 * First tag all the fields that are part of a slot,
2205 * a slot needs to have one Contact ID in the collection
2206 */
2207 for (i = 0; i < report->maxfield; i++) {
2208 field = report->field[i];
2209
2210 /* ignore fields without usage */
2211 if (field->maxusage < 1)
2212 continue;
2213
2214 /*
2215 * janitoring when collection_index changes
2216 */
2217 if (prev_collection_index != field->usage->collection_index) {
2218 prev_collection_index = field->usage->collection_index;
2219 first_field_index = i;
2220 }
2221
2222 /*
2223 * if we already found a Contact ID in the collection,
2224 * tag and continue to the next.
2225 */
2226 if (slot_collection_index == field->usage->collection_index) {
2227 field->slot_idx = slot_idx;
2228 continue;
2229 }
2230
2231 /* check if the current field has Contact ID */
2232 for (j = 0; j < field->maxusage; j++) {
2233 if (field->usage[j].hid == HID_DG_CONTACTID) {
2234 slot_collection_index = field->usage->collection_index;
2235 slot_idx++;
2236
2237 /*
2238 * mark all previous fields and this one in the
2239 * current collection to be slotted.
2240 */
2241 for (k = first_field_index; k <= i; k++)
2242 report->field[k]->slot_idx = slot_idx;
2243 break;
2244 }
2245 }
2246 }
2247
2248 for (i = 0; i < report->maxfield; i++)
2249 for (j = 0; j < report->field[i]->maxusage; j++)
2250 hidinput_configure_usage(hidinput, report->field[i],
2251 report->field[i]->usage + j,
2252 j);
2253}
2254
2255/*
2256 * Register the input device; print a message.
2257 * Configure the input layer interface
2258 * Read all reports and initialize the absolute field values.
2259 */
2260
2261int hidinput_connect(struct hid_device *hid, unsigned int force)
2262{
2263 struct hid_driver *drv = hid->driver;
2264 struct hid_report *report;
2265 struct hid_input *next, *hidinput = NULL;
2266 unsigned int application;
2267 int i, k;
2268
2269 INIT_LIST_HEAD(&hid->inputs);
2270 INIT_WORK(&hid->led_work, hidinput_led_worker);
2271
2272 hid->status &= ~HID_STAT_DUP_DETECTED;
2273
2274 if (!force) {
2275 for (i = 0; i < hid->maxcollection; i++) {
2276 struct hid_collection *col = &hid->collection[i];
2277 if (col->type == HID_COLLECTION_APPLICATION ||
2278 col->type == HID_COLLECTION_PHYSICAL)
2279 if (IS_INPUT_APPLICATION(col->usage))
2280 break;
2281 }
2282
2283 if (i == hid->maxcollection)
2284 return -1;
2285 }
2286
2287 report_features(hid);
2288
2289 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
2290 if (k == HID_OUTPUT_REPORT &&
2291 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2292 continue;
2293
2294 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
2295
2296 if (!report->maxfield)
2297 continue;
2298
2299 application = report->application;
2300
2301 /*
2302 * Find the previous hidinput report attached
2303 * to this report id.
2304 */
2305 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
2306 hidinput = hidinput_match(report);
2307 else if (hid->maxapplication > 1 &&
2308 (hid->quirks & HID_QUIRK_INPUT_PER_APP))
2309 hidinput = hidinput_match_application(report);
2310
2311 if (!hidinput) {
2312 hidinput = hidinput_allocate(hid, application);
2313 if (!hidinput)
2314 goto out_unwind;
2315 }
2316
2317 hidinput_configure_usages(hidinput, report);
2318
2319 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
2320 hidinput->report = report;
2321
2322 list_add_tail(&report->hidinput_list,
2323 &hidinput->reports);
2324 }
2325 }
2326
2327 hidinput_change_resolution_multipliers(hid);
2328
2329 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
2330 if (drv->input_configured &&
2331 drv->input_configured(hid, hidinput))
2332 goto out_unwind;
2333
2334 if (!hidinput_has_been_populated(hidinput)) {
2335 /* no need to register an input device not populated */
2336 hidinput_cleanup_hidinput(hid, hidinput);
2337 continue;
2338 }
2339
2340 if (input_register_device(hidinput->input))
2341 goto out_unwind;
2342 hidinput->registered = true;
2343 }
2344
2345 if (list_empty(&hid->inputs)) {
2346 hid_err(hid, "No inputs registered, leaving\n");
2347 goto out_unwind;
2348 }
2349
2350 if (hid->status & HID_STAT_DUP_DETECTED)
2351 hid_dbg(hid,
2352 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n");
2353
2354 return 0;
2355
2356out_unwind:
2357 /* unwind the ones we already registered */
2358 hidinput_disconnect(hid);
2359
2360 return -1;
2361}
2362EXPORT_SYMBOL_GPL(hidinput_connect);
2363
2364void hidinput_disconnect(struct hid_device *hid)
2365{
2366 struct hid_input *hidinput, *next;
2367
2368 hidinput_cleanup_battery(hid);
2369
2370 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
2371 list_del(&hidinput->list);
2372 if (hidinput->registered)
2373 input_unregister_device(hidinput->input);
2374 else
2375 input_free_device(hidinput->input);
2376 kfree(hidinput->name);
2377 kfree(hidinput);
2378 }
2379
2380 /* led_work is spawned by input_dev callbacks, but doesn't access the
2381 * parent input_dev at all. Once all input devices are removed, we
2382 * know that led_work will never get restarted, so we can cancel it
2383 * synchronously and are safe. */
2384 cancel_work_sync(&hid->led_work);
2385}
2386EXPORT_SYMBOL_GPL(hidinput_disconnect);
2387
2388#ifdef CONFIG_HID_KUNIT_TEST
2389#include "hid-input-test.c"
2390#endif