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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/*
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#include "hid-ids.h"
36
37#define unk KEY_UNKNOWN
38
39static const unsigned char hid_keyboard[256] = {
40 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
41 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
42 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
43 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
44 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
45 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
46 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
47 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
48 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
49 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,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,179,180,unk,unk,unk,unk,unk,unk,unk,unk,
52 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
53 unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk,
54 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
55 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
56};
57
58static const struct {
59 __s32 x;
60 __s32 y;
61} hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
62
63#define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
64#define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
65#define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
66#define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
67
68#define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
69 &max, EV_ABS, (c))
70#define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
71 &max, EV_KEY, (c))
72
73static bool match_scancode(struct hid_usage *usage,
74 unsigned int cur_idx, unsigned int scancode)
75{
76 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
77}
78
79static bool match_keycode(struct hid_usage *usage,
80 unsigned int cur_idx, unsigned int keycode)
81{
82 /*
83 * We should exclude unmapped usages when doing lookup by keycode.
84 */
85 return (usage->type == EV_KEY && usage->code == keycode);
86}
87
88static bool match_index(struct hid_usage *usage,
89 unsigned int cur_idx, unsigned int idx)
90{
91 return cur_idx == idx;
92}
93
94typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
95 unsigned int cur_idx, unsigned int val);
96
97static struct hid_usage *hidinput_find_key(struct hid_device *hid,
98 hid_usage_cmp_t match,
99 unsigned int value,
100 unsigned int *usage_idx)
101{
102 unsigned int i, j, k, cur_idx = 0;
103 struct hid_report *report;
104 struct hid_usage *usage;
105
106 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
107 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
108 for (i = 0; i < report->maxfield; i++) {
109 for (j = 0; j < report->field[i]->maxusage; j++) {
110 usage = report->field[i]->usage + j;
111 if (usage->type == EV_KEY || usage->type == 0) {
112 if (match(usage, cur_idx, value)) {
113 if (usage_idx)
114 *usage_idx = cur_idx;
115 return usage;
116 }
117 cur_idx++;
118 }
119 }
120 }
121 }
122 }
123 return NULL;
124}
125
126static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
127 const struct input_keymap_entry *ke,
128 unsigned int *index)
129{
130 struct hid_usage *usage;
131 unsigned int scancode;
132
133 if (ke->flags & INPUT_KEYMAP_BY_INDEX)
134 usage = hidinput_find_key(hid, match_index, ke->index, index);
135 else if (input_scancode_to_scalar(ke, &scancode) == 0)
136 usage = hidinput_find_key(hid, match_scancode, scancode, index);
137 else
138 usage = NULL;
139
140 return usage;
141}
142
143static int hidinput_getkeycode(struct input_dev *dev,
144 struct input_keymap_entry *ke)
145{
146 struct hid_device *hid = input_get_drvdata(dev);
147 struct hid_usage *usage;
148 unsigned int scancode, index;
149
150 usage = hidinput_locate_usage(hid, ke, &index);
151 if (usage) {
152 ke->keycode = usage->type == EV_KEY ?
153 usage->code : KEY_RESERVED;
154 ke->index = index;
155 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
156 ke->len = sizeof(scancode);
157 memcpy(ke->scancode, &scancode, sizeof(scancode));
158 return 0;
159 }
160
161 return -EINVAL;
162}
163
164static int hidinput_setkeycode(struct input_dev *dev,
165 const struct input_keymap_entry *ke,
166 unsigned int *old_keycode)
167{
168 struct hid_device *hid = input_get_drvdata(dev);
169 struct hid_usage *usage;
170
171 usage = hidinput_locate_usage(hid, ke, NULL);
172 if (usage) {
173 *old_keycode = usage->type == EV_KEY ?
174 usage->code : KEY_RESERVED;
175 usage->code = ke->keycode;
176
177 clear_bit(*old_keycode, dev->keybit);
178 set_bit(usage->code, dev->keybit);
179 dbg_hid("Assigned keycode %d to HID usage code %x\n",
180 usage->code, usage->hid);
181
182 /*
183 * Set the keybit for the old keycode if the old keycode is used
184 * by another key
185 */
186 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
187 set_bit(*old_keycode, dev->keybit);
188
189 return 0;
190 }
191
192 return -EINVAL;
193}
194
195
196/**
197 * hidinput_calc_abs_res - calculate an absolute axis resolution
198 * @field: the HID report field to calculate resolution for
199 * @code: axis code
200 *
201 * The formula is:
202 * (logical_maximum - logical_minimum)
203 * resolution = ----------------------------------------------------------
204 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent
205 *
206 * as seen in the HID specification v1.11 6.2.2.7 Global Items.
207 *
208 * Only exponent 1 length units are processed. Centimeters and inches are
209 * converted to millimeters. Degrees are converted to radians.
210 */
211__s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
212{
213 __s32 unit_exponent = field->unit_exponent;
214 __s32 logical_extents = field->logical_maximum -
215 field->logical_minimum;
216 __s32 physical_extents = field->physical_maximum -
217 field->physical_minimum;
218 __s32 prev;
219
220 /* Check if the extents are sane */
221 if (logical_extents <= 0 || physical_extents <= 0)
222 return 0;
223
224 /*
225 * Verify and convert units.
226 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
227 */
228 switch (code) {
229 case ABS_X:
230 case ABS_Y:
231 case ABS_Z:
232 case ABS_MT_POSITION_X:
233 case ABS_MT_POSITION_Y:
234 case ABS_MT_TOOL_X:
235 case ABS_MT_TOOL_Y:
236 case ABS_MT_TOUCH_MAJOR:
237 case ABS_MT_TOUCH_MINOR:
238 if (field->unit == 0x11) { /* If centimeters */
239 /* Convert to millimeters */
240 unit_exponent += 1;
241 } else if (field->unit == 0x13) { /* If inches */
242 /* Convert to millimeters */
243 prev = physical_extents;
244 physical_extents *= 254;
245 if (physical_extents < prev)
246 return 0;
247 unit_exponent -= 1;
248 } else {
249 return 0;
250 }
251 break;
252
253 case ABS_RX:
254 case ABS_RY:
255 case ABS_RZ:
256 case ABS_TILT_X:
257 case ABS_TILT_Y:
258 if (field->unit == 0x14) { /* If degrees */
259 /* Convert to radians */
260 prev = logical_extents;
261 logical_extents *= 573;
262 if (logical_extents < prev)
263 return 0;
264 unit_exponent += 1;
265 } else if (field->unit != 0x12) { /* If not radians */
266 return 0;
267 }
268 break;
269
270 default:
271 return 0;
272 }
273
274 /* Apply negative unit exponent */
275 for (; unit_exponent < 0; unit_exponent++) {
276 prev = logical_extents;
277 logical_extents *= 10;
278 if (logical_extents < prev)
279 return 0;
280 }
281 /* Apply positive unit exponent */
282 for (; unit_exponent > 0; unit_exponent--) {
283 prev = physical_extents;
284 physical_extents *= 10;
285 if (physical_extents < prev)
286 return 0;
287 }
288
289 /* Calculate resolution */
290 return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
291}
292EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
293
294#ifdef CONFIG_HID_BATTERY_STRENGTH
295static enum power_supply_property hidinput_battery_props[] = {
296 POWER_SUPPLY_PROP_PRESENT,
297 POWER_SUPPLY_PROP_ONLINE,
298 POWER_SUPPLY_PROP_CAPACITY,
299 POWER_SUPPLY_PROP_MODEL_NAME,
300 POWER_SUPPLY_PROP_STATUS,
301 POWER_SUPPLY_PROP_SCOPE,
302};
303
304#define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
305#define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
306
307static const struct hid_device_id hid_battery_quirks[] = {
308 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
309 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
310 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
311 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
312 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
313 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
314 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
315 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
316 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
317 {}
318};
319
320static unsigned find_battery_quirk(struct hid_device *hdev)
321{
322 unsigned quirks = 0;
323 const struct hid_device_id *match;
324
325 match = hid_match_id(hdev, hid_battery_quirks);
326 if (match != NULL)
327 quirks = match->driver_data;
328
329 return quirks;
330}
331
332static int hidinput_get_battery_property(struct power_supply *psy,
333 enum power_supply_property prop,
334 union power_supply_propval *val)
335{
336 struct hid_device *dev = container_of(psy, struct hid_device, battery);
337 int ret = 0;
338 __u8 *buf;
339
340 switch (prop) {
341 case POWER_SUPPLY_PROP_PRESENT:
342 case POWER_SUPPLY_PROP_ONLINE:
343 val->intval = 1;
344 break;
345
346 case POWER_SUPPLY_PROP_CAPACITY:
347
348 buf = kmalloc(2 * sizeof(__u8), GFP_KERNEL);
349 if (!buf) {
350 ret = -ENOMEM;
351 break;
352 }
353 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2,
354 dev->battery_report_type,
355 HID_REQ_GET_REPORT);
356
357 if (ret != 2) {
358 ret = -ENODATA;
359 kfree(buf);
360 break;
361 }
362 ret = 0;
363
364 if (dev->battery_min < dev->battery_max &&
365 buf[1] >= dev->battery_min &&
366 buf[1] <= dev->battery_max)
367 val->intval = (100 * (buf[1] - dev->battery_min)) /
368 (dev->battery_max - dev->battery_min);
369 kfree(buf);
370 break;
371
372 case POWER_SUPPLY_PROP_MODEL_NAME:
373 val->strval = dev->name;
374 break;
375
376 case POWER_SUPPLY_PROP_STATUS:
377 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
378 break;
379
380 case POWER_SUPPLY_PROP_SCOPE:
381 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
382 break;
383
384 default:
385 ret = -EINVAL;
386 break;
387 }
388
389 return ret;
390}
391
392static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
393{
394 struct power_supply *battery = &dev->battery;
395 int ret;
396 unsigned quirks;
397 s32 min, max;
398
399 if (field->usage->hid != HID_DC_BATTERYSTRENGTH)
400 return false; /* no match */
401
402 if (battery->name != NULL)
403 goto out; /* already initialized? */
404
405 battery->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq);
406 if (battery->name == NULL)
407 goto out;
408
409 battery->type = POWER_SUPPLY_TYPE_BATTERY;
410 battery->properties = hidinput_battery_props;
411 battery->num_properties = ARRAY_SIZE(hidinput_battery_props);
412 battery->use_for_apm = 0;
413 battery->get_property = hidinput_get_battery_property;
414
415 quirks = find_battery_quirk(dev);
416
417 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
418 dev->bus, dev->vendor, dev->product, dev->version, quirks);
419
420 min = field->logical_minimum;
421 max = field->logical_maximum;
422
423 if (quirks & HID_BATTERY_QUIRK_PERCENT) {
424 min = 0;
425 max = 100;
426 }
427
428 if (quirks & HID_BATTERY_QUIRK_FEATURE)
429 report_type = HID_FEATURE_REPORT;
430
431 dev->battery_min = min;
432 dev->battery_max = max;
433 dev->battery_report_type = report_type;
434 dev->battery_report_id = field->report->id;
435
436 ret = power_supply_register(&dev->dev, battery);
437 if (ret != 0) {
438 hid_warn(dev, "can't register power supply: %d\n", ret);
439 kfree(battery->name);
440 battery->name = NULL;
441 }
442
443 power_supply_powers(battery, &dev->dev);
444
445out:
446 return true;
447}
448
449static void hidinput_cleanup_battery(struct hid_device *dev)
450{
451 if (!dev->battery.name)
452 return;
453
454 power_supply_unregister(&dev->battery);
455 kfree(dev->battery.name);
456 dev->battery.name = NULL;
457}
458#else /* !CONFIG_HID_BATTERY_STRENGTH */
459static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
460 struct hid_field *field)
461{
462 return false;
463}
464
465static void hidinput_cleanup_battery(struct hid_device *dev)
466{
467}
468#endif /* CONFIG_HID_BATTERY_STRENGTH */
469
470static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
471 struct hid_usage *usage)
472{
473 struct input_dev *input = hidinput->input;
474 struct hid_device *device = input_get_drvdata(input);
475 int max = 0, code;
476 unsigned long *bit = NULL;
477
478 field->hidinput = hidinput;
479
480 if (field->flags & HID_MAIN_ITEM_CONSTANT)
481 goto ignore;
482
483 /* Ignore if report count is out of bounds. */
484 if (field->report_count < 1)
485 goto ignore;
486
487 /* only LED usages are supported in output fields */
488 if (field->report_type == HID_OUTPUT_REPORT &&
489 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
490 goto ignore;
491 }
492
493 if (device->driver->input_mapping) {
494 int ret = device->driver->input_mapping(device, hidinput, field,
495 usage, &bit, &max);
496 if (ret > 0)
497 goto mapped;
498 if (ret < 0)
499 goto ignore;
500 }
501
502 switch (usage->hid & HID_USAGE_PAGE) {
503 case HID_UP_UNDEFINED:
504 goto ignore;
505
506 case HID_UP_KEYBOARD:
507 set_bit(EV_REP, input->evbit);
508
509 if ((usage->hid & HID_USAGE) < 256) {
510 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
511 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
512 } else
513 map_key(KEY_UNKNOWN);
514
515 break;
516
517 case HID_UP_BUTTON:
518 code = ((usage->hid - 1) & HID_USAGE);
519
520 switch (field->application) {
521 case HID_GD_MOUSE:
522 case HID_GD_POINTER: code += BTN_MOUSE; break;
523 case HID_GD_JOYSTICK:
524 if (code <= 0xf)
525 code += BTN_JOYSTICK;
526 else
527 code += BTN_TRIGGER_HAPPY - 0x10;
528 break;
529 case HID_GD_GAMEPAD:
530 if (code <= 0xf)
531 code += BTN_GAMEPAD;
532 else
533 code += BTN_TRIGGER_HAPPY - 0x10;
534 break;
535 default:
536 switch (field->physical) {
537 case HID_GD_MOUSE:
538 case HID_GD_POINTER: code += BTN_MOUSE; break;
539 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
540 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
541 default: code += BTN_MISC;
542 }
543 }
544
545 map_key(code);
546 break;
547
548 case HID_UP_SIMULATION:
549 switch (usage->hid & 0xffff) {
550 case 0xba: map_abs(ABS_RUDDER); break;
551 case 0xbb: map_abs(ABS_THROTTLE); break;
552 case 0xc4: map_abs(ABS_GAS); break;
553 case 0xc5: map_abs(ABS_BRAKE); break;
554 case 0xc8: map_abs(ABS_WHEEL); break;
555 default: goto ignore;
556 }
557 break;
558
559 case HID_UP_GENDESK:
560 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
561 switch (usage->hid & 0xf) {
562 case 0x1: map_key_clear(KEY_POWER); break;
563 case 0x2: map_key_clear(KEY_SLEEP); break;
564 case 0x3: map_key_clear(KEY_WAKEUP); break;
565 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
566 case 0x5: map_key_clear(KEY_MENU); break;
567 case 0x6: map_key_clear(KEY_PROG1); break;
568 case 0x7: map_key_clear(KEY_HELP); break;
569 case 0x8: map_key_clear(KEY_EXIT); break;
570 case 0x9: map_key_clear(KEY_SELECT); break;
571 case 0xa: map_key_clear(KEY_RIGHT); break;
572 case 0xb: map_key_clear(KEY_LEFT); break;
573 case 0xc: map_key_clear(KEY_UP); break;
574 case 0xd: map_key_clear(KEY_DOWN); break;
575 case 0xe: map_key_clear(KEY_POWER2); break;
576 case 0xf: map_key_clear(KEY_RESTART); break;
577 default: goto unknown;
578 }
579 break;
580 }
581
582 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
583 switch (usage->hid) {
584 case HID_GD_UP: usage->hat_dir = 1; break;
585 case HID_GD_DOWN: usage->hat_dir = 5; break;
586 case HID_GD_RIGHT: usage->hat_dir = 3; break;
587 case HID_GD_LEFT: usage->hat_dir = 7; break;
588 default: goto unknown;
589 }
590 if (field->dpad) {
591 map_abs(field->dpad);
592 goto ignore;
593 }
594 map_abs(ABS_HAT0X);
595 break;
596 }
597
598 switch (usage->hid) {
599 /* These usage IDs map directly to the usage codes. */
600 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
601 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
602 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
603 if (field->flags & HID_MAIN_ITEM_RELATIVE)
604 map_rel(usage->hid & 0xf);
605 else
606 map_abs(usage->hid & 0xf);
607 break;
608
609 case HID_GD_HATSWITCH:
610 usage->hat_min = field->logical_minimum;
611 usage->hat_max = field->logical_maximum;
612 map_abs(ABS_HAT0X);
613 break;
614
615 case HID_GD_START: map_key_clear(BTN_START); break;
616 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
617
618 default: goto unknown;
619 }
620
621 break;
622
623 case HID_UP_LED:
624 switch (usage->hid & 0xffff) { /* HID-Value: */
625 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
626 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
627 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
628 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
629 case 0x05: map_led (LED_KANA); break; /* "Kana" */
630 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
631 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
632 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
633 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
634 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
635 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
636
637 default: goto ignore;
638 }
639 break;
640
641 case HID_UP_DIGITIZER:
642 switch (usage->hid & 0xff) {
643 case 0x00: /* Undefined */
644 goto ignore;
645
646 case 0x30: /* TipPressure */
647 if (!test_bit(BTN_TOUCH, input->keybit)) {
648 device->quirks |= HID_QUIRK_NOTOUCH;
649 set_bit(EV_KEY, input->evbit);
650 set_bit(BTN_TOUCH, input->keybit);
651 }
652 map_abs_clear(ABS_PRESSURE);
653 break;
654
655 case 0x32: /* InRange */
656 switch (field->physical & 0xff) {
657 case 0x21: map_key(BTN_TOOL_MOUSE); break;
658 case 0x22: map_key(BTN_TOOL_FINGER); break;
659 default: map_key(BTN_TOOL_PEN); break;
660 }
661 break;
662
663 case 0x3c: /* Invert */
664 map_key_clear(BTN_TOOL_RUBBER);
665 break;
666
667 case 0x3d: /* X Tilt */
668 map_abs_clear(ABS_TILT_X);
669 break;
670
671 case 0x3e: /* Y Tilt */
672 map_abs_clear(ABS_TILT_Y);
673 break;
674
675 case 0x33: /* Touch */
676 case 0x42: /* TipSwitch */
677 case 0x43: /* TipSwitch2 */
678 device->quirks &= ~HID_QUIRK_NOTOUCH;
679 map_key_clear(BTN_TOUCH);
680 break;
681
682 case 0x44: /* BarrelSwitch */
683 map_key_clear(BTN_STYLUS);
684 break;
685
686 case 0x46: /* TabletPick */
687 map_key_clear(BTN_STYLUS2);
688 break;
689
690 default: goto unknown;
691 }
692 break;
693
694 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
695 switch (usage->hid & HID_USAGE) {
696 case 0x000: goto ignore;
697 case 0x030: map_key_clear(KEY_POWER); break;
698 case 0x031: map_key_clear(KEY_RESTART); break;
699 case 0x032: map_key_clear(KEY_SLEEP); break;
700 case 0x034: map_key_clear(KEY_SLEEP); break;
701 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
702 case 0x036: map_key_clear(BTN_MISC); break;
703
704 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
705 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
706 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
707 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
708 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
709 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
710 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
711 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
712 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
713
714 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
715 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
716 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
717 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
718 case 0x069: map_key_clear(KEY_RED); break;
719 case 0x06a: map_key_clear(KEY_GREEN); break;
720 case 0x06b: map_key_clear(KEY_BLUE); break;
721 case 0x06c: map_key_clear(KEY_YELLOW); break;
722 case 0x06d: map_key_clear(KEY_ZOOM); break;
723
724 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
725 case 0x083: map_key_clear(KEY_LAST); break;
726 case 0x084: map_key_clear(KEY_ENTER); break;
727 case 0x088: map_key_clear(KEY_PC); break;
728 case 0x089: map_key_clear(KEY_TV); break;
729 case 0x08a: map_key_clear(KEY_WWW); break;
730 case 0x08b: map_key_clear(KEY_DVD); break;
731 case 0x08c: map_key_clear(KEY_PHONE); break;
732 case 0x08d: map_key_clear(KEY_PROGRAM); break;
733 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
734 case 0x08f: map_key_clear(KEY_GAMES); break;
735 case 0x090: map_key_clear(KEY_MEMO); break;
736 case 0x091: map_key_clear(KEY_CD); break;
737 case 0x092: map_key_clear(KEY_VCR); break;
738 case 0x093: map_key_clear(KEY_TUNER); break;
739 case 0x094: map_key_clear(KEY_EXIT); break;
740 case 0x095: map_key_clear(KEY_HELP); break;
741 case 0x096: map_key_clear(KEY_TAPE); break;
742 case 0x097: map_key_clear(KEY_TV2); break;
743 case 0x098: map_key_clear(KEY_SAT); break;
744 case 0x09a: map_key_clear(KEY_PVR); break;
745
746 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
747 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
748 case 0x0a0: map_key_clear(KEY_VCR2); break;
749
750 case 0x0b0: map_key_clear(KEY_PLAY); break;
751 case 0x0b1: map_key_clear(KEY_PAUSE); break;
752 case 0x0b2: map_key_clear(KEY_RECORD); break;
753 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
754 case 0x0b4: map_key_clear(KEY_REWIND); break;
755 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
756 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
757 case 0x0b7: map_key_clear(KEY_STOPCD); break;
758 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
759 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
760 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
761 case 0x0bf: map_key_clear(KEY_SLOW); break;
762
763 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
764 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
765 case 0x0e2: map_key_clear(KEY_MUTE); break;
766 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
767 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
768 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
769 case 0x0f5: map_key_clear(KEY_SLOW); break;
770
771 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
772 case 0x183: map_key_clear(KEY_CONFIG); break;
773 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
774 case 0x185: map_key_clear(KEY_EDITOR); break;
775 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
776 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
777 case 0x188: map_key_clear(KEY_PRESENTATION); break;
778 case 0x189: map_key_clear(KEY_DATABASE); break;
779 case 0x18a: map_key_clear(KEY_MAIL); break;
780 case 0x18b: map_key_clear(KEY_NEWS); break;
781 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
782 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
783 case 0x18e: map_key_clear(KEY_CALENDAR); break;
784 case 0x191: map_key_clear(KEY_FINANCE); break;
785 case 0x192: map_key_clear(KEY_CALC); break;
786 case 0x193: map_key_clear(KEY_PLAYER); break;
787 case 0x194: map_key_clear(KEY_FILE); break;
788 case 0x196: map_key_clear(KEY_WWW); break;
789 case 0x199: map_key_clear(KEY_CHAT); break;
790 case 0x19c: map_key_clear(KEY_LOGOFF); break;
791 case 0x19e: map_key_clear(KEY_COFFEE); break;
792 case 0x1a3: map_key_clear(KEY_NEXT); break;
793 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
794 case 0x1a6: map_key_clear(KEY_HELP); break;
795 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
796 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
797 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
798 case 0x1b4: map_key_clear(KEY_FILE); break;
799 case 0x1b6: map_key_clear(KEY_IMAGES); break;
800 case 0x1b7: map_key_clear(KEY_AUDIO); break;
801 case 0x1b8: map_key_clear(KEY_VIDEO); break;
802 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
803 case 0x1bd: map_key_clear(KEY_INFO); break;
804 case 0x201: map_key_clear(KEY_NEW); break;
805 case 0x202: map_key_clear(KEY_OPEN); break;
806 case 0x203: map_key_clear(KEY_CLOSE); break;
807 case 0x204: map_key_clear(KEY_EXIT); break;
808 case 0x207: map_key_clear(KEY_SAVE); break;
809 case 0x208: map_key_clear(KEY_PRINT); break;
810 case 0x209: map_key_clear(KEY_PROPS); break;
811 case 0x21a: map_key_clear(KEY_UNDO); break;
812 case 0x21b: map_key_clear(KEY_COPY); break;
813 case 0x21c: map_key_clear(KEY_CUT); break;
814 case 0x21d: map_key_clear(KEY_PASTE); break;
815 case 0x21f: map_key_clear(KEY_FIND); break;
816 case 0x221: map_key_clear(KEY_SEARCH); break;
817 case 0x222: map_key_clear(KEY_GOTO); break;
818 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
819 case 0x224: map_key_clear(KEY_BACK); break;
820 case 0x225: map_key_clear(KEY_FORWARD); break;
821 case 0x226: map_key_clear(KEY_STOP); break;
822 case 0x227: map_key_clear(KEY_REFRESH); break;
823 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
824 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
825 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
826 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
827 case 0x233: map_key_clear(KEY_SCROLLUP); break;
828 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
829 case 0x238: map_rel(REL_HWHEEL); break;
830 case 0x23d: map_key_clear(KEY_EDIT); break;
831 case 0x25f: map_key_clear(KEY_CANCEL); break;
832 case 0x269: map_key_clear(KEY_INSERT); break;
833 case 0x26a: map_key_clear(KEY_DELETE); break;
834 case 0x279: map_key_clear(KEY_REDO); break;
835
836 case 0x289: map_key_clear(KEY_REPLY); break;
837 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
838 case 0x28c: map_key_clear(KEY_SEND); break;
839
840 default: goto ignore;
841 }
842 break;
843
844 case HID_UP_GENDEVCTRLS:
845 if (hidinput_setup_battery(device, HID_INPUT_REPORT, field))
846 goto ignore;
847 else
848 goto unknown;
849 break;
850
851 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
852 set_bit(EV_REP, input->evbit);
853 switch (usage->hid & HID_USAGE) {
854 case 0x021: map_key_clear(KEY_PRINT); break;
855 case 0x070: map_key_clear(KEY_HP); break;
856 case 0x071: map_key_clear(KEY_CAMERA); break;
857 case 0x072: map_key_clear(KEY_SOUND); break;
858 case 0x073: map_key_clear(KEY_QUESTION); break;
859 case 0x080: map_key_clear(KEY_EMAIL); break;
860 case 0x081: map_key_clear(KEY_CHAT); break;
861 case 0x082: map_key_clear(KEY_SEARCH); break;
862 case 0x083: map_key_clear(KEY_CONNECT); break;
863 case 0x084: map_key_clear(KEY_FINANCE); break;
864 case 0x085: map_key_clear(KEY_SPORT); break;
865 case 0x086: map_key_clear(KEY_SHOP); break;
866 default: goto ignore;
867 }
868 break;
869
870 case HID_UP_HPVENDOR2:
871 set_bit(EV_REP, input->evbit);
872 switch (usage->hid & HID_USAGE) {
873 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
874 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
875 default: goto ignore;
876 }
877 break;
878
879 case HID_UP_MSVENDOR:
880 goto ignore;
881
882 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
883 set_bit(EV_REP, input->evbit);
884 goto ignore;
885
886 case HID_UP_LOGIVENDOR:
887 goto ignore;
888
889 case HID_UP_PID:
890 switch (usage->hid & HID_USAGE) {
891 case 0xa4: map_key_clear(BTN_DEAD); break;
892 default: goto ignore;
893 }
894 break;
895
896 default:
897 unknown:
898 if (field->report_size == 1) {
899 if (field->report->type == HID_OUTPUT_REPORT) {
900 map_led(LED_MISC);
901 break;
902 }
903 map_key(BTN_MISC);
904 break;
905 }
906 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
907 map_rel(REL_MISC);
908 break;
909 }
910 map_abs(ABS_MISC);
911 break;
912 }
913
914mapped:
915 if (device->driver->input_mapped && device->driver->input_mapped(device,
916 hidinput, field, usage, &bit, &max) < 0)
917 goto ignore;
918
919 set_bit(usage->type, input->evbit);
920
921 while (usage->code <= max && test_and_set_bit(usage->code, bit))
922 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
923
924 if (usage->code > max)
925 goto ignore;
926
927
928 if (usage->type == EV_ABS) {
929
930 int a = field->logical_minimum;
931 int b = field->logical_maximum;
932
933 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
934 a = field->logical_minimum = 0;
935 b = field->logical_maximum = 255;
936 }
937
938 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
939 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
940 else input_set_abs_params(input, usage->code, a, b, 0, 0);
941
942 input_abs_set_res(input, usage->code,
943 hidinput_calc_abs_res(field, usage->code));
944
945 /* use a larger default input buffer for MT devices */
946 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
947 input_set_events_per_packet(input, 60);
948 }
949
950 if (usage->type == EV_ABS &&
951 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
952 int i;
953 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
954 input_set_abs_params(input, i, -1, 1, 0, 0);
955 set_bit(i, input->absbit);
956 }
957 if (usage->hat_dir && !field->dpad)
958 field->dpad = usage->code;
959 }
960
961 /* for those devices which produce Consumer volume usage as relative,
962 * we emulate pressing volumeup/volumedown appropriate number of times
963 * in hidinput_hid_event()
964 */
965 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
966 (usage->code == ABS_VOLUME)) {
967 set_bit(KEY_VOLUMEUP, input->keybit);
968 set_bit(KEY_VOLUMEDOWN, input->keybit);
969 }
970
971 if (usage->type == EV_KEY) {
972 set_bit(EV_MSC, input->evbit);
973 set_bit(MSC_SCAN, input->mscbit);
974 }
975
976ignore:
977 return;
978
979}
980
981void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
982{
983 struct input_dev *input;
984 unsigned *quirks = &hid->quirks;
985
986 if (!field->hidinput)
987 return;
988
989 input = field->hidinput->input;
990
991 if (!usage->type)
992 return;
993
994 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
995 int hat_dir = usage->hat_dir;
996 if (!hat_dir)
997 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
998 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
999 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
1000 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1001 return;
1002 }
1003
1004 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
1005 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
1006 return;
1007 }
1008
1009 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
1010 if (value) {
1011 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
1012 return;
1013 }
1014 input_event(input, usage->type, usage->code, 0);
1015 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
1016 return;
1017 }
1018
1019 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
1020 int a = field->logical_minimum;
1021 int b = field->logical_maximum;
1022 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
1023 }
1024
1025 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
1026 dbg_hid("Maximum Effects - %d\n",value);
1027 return;
1028 }
1029
1030 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
1031 dbg_hid("PID Pool Report\n");
1032 return;
1033 }
1034
1035 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1036 return;
1037
1038 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1039 (usage->code == ABS_VOLUME)) {
1040 int count = abs(value);
1041 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1042 int i;
1043
1044 for (i = 0; i < count; i++) {
1045 input_event(input, EV_KEY, direction, 1);
1046 input_sync(input);
1047 input_event(input, EV_KEY, direction, 0);
1048 input_sync(input);
1049 }
1050 return;
1051 }
1052
1053 /*
1054 * Ignore out-of-range values as per HID specification,
1055 * section 5.10 and 6.2.25.
1056 *
1057 * The logical_minimum < logical_maximum check is done so that we
1058 * don't unintentionally discard values sent by devices which
1059 * don't specify logical min and max.
1060 */
1061 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1062 (field->logical_minimum < field->logical_maximum) &&
1063 (value < field->logical_minimum ||
1064 value > field->logical_maximum)) {
1065 dbg_hid("Ignoring out-of-range value %x\n", value);
1066 return;
1067 }
1068
1069 /* report the usage code as scancode if the key status has changed */
1070 if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
1071 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1072
1073 input_event(input, usage->type, usage->code, value);
1074
1075 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
1076 input_event(input, usage->type, usage->code, 0);
1077}
1078
1079void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1080{
1081 struct hid_input *hidinput;
1082
1083 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1084 return;
1085
1086 list_for_each_entry(hidinput, &hid->inputs, list)
1087 input_sync(hidinput->input);
1088}
1089EXPORT_SYMBOL_GPL(hidinput_report_event);
1090
1091int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1092{
1093 struct hid_report *report;
1094 int i, j;
1095
1096 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1097 for (i = 0; i < report->maxfield; i++) {
1098 *field = report->field[i];
1099 for (j = 0; j < (*field)->maxusage; j++)
1100 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1101 return j;
1102 }
1103 }
1104 return -1;
1105}
1106EXPORT_SYMBOL_GPL(hidinput_find_field);
1107
1108struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1109{
1110 struct hid_report *report;
1111 struct hid_field *field;
1112 int i, j;
1113
1114 list_for_each_entry(report,
1115 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1116 list) {
1117 for (i = 0; i < report->maxfield; i++) {
1118 field = report->field[i];
1119 for (j = 0; j < field->maxusage; j++)
1120 if (field->usage[j].type == EV_LED)
1121 return field;
1122 }
1123 }
1124 return NULL;
1125}
1126EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1127
1128unsigned int hidinput_count_leds(struct hid_device *hid)
1129{
1130 struct hid_report *report;
1131 struct hid_field *field;
1132 int i, j;
1133 unsigned int count = 0;
1134
1135 list_for_each_entry(report,
1136 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1137 list) {
1138 for (i = 0; i < report->maxfield; i++) {
1139 field = report->field[i];
1140 for (j = 0; j < field->maxusage; j++)
1141 if (field->usage[j].type == EV_LED &&
1142 field->value[j])
1143 count += 1;
1144 }
1145 }
1146 return count;
1147}
1148EXPORT_SYMBOL_GPL(hidinput_count_leds);
1149
1150static void hidinput_led_worker(struct work_struct *work)
1151{
1152 struct hid_device *hid = container_of(work, struct hid_device,
1153 led_work);
1154 struct hid_field *field;
1155 struct hid_report *report;
1156 int len, ret;
1157 __u8 *buf;
1158
1159 field = hidinput_get_led_field(hid);
1160 if (!field)
1161 return;
1162
1163 /*
1164 * field->report is accessed unlocked regarding HID core. So there might
1165 * be another incoming SET-LED request from user-space, which changes
1166 * the LED state while we assemble our outgoing buffer. However, this
1167 * doesn't matter as hid_output_report() correctly converts it into a
1168 * boolean value no matter what information is currently set on the LED
1169 * field (even garbage). So the remote device will always get a valid
1170 * request.
1171 * And in case we send a wrong value, a next led worker is spawned
1172 * for every SET-LED request so the following worker will send the
1173 * correct value, guaranteed!
1174 */
1175
1176 report = field->report;
1177
1178 /* use custom SET_REPORT request if possible (asynchronous) */
1179 if (hid->ll_driver->request)
1180 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1181
1182 /* fall back to generic raw-output-report */
1183 len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1184 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1185 if (!buf)
1186 return;
1187
1188 hid_output_report(report, buf);
1189 /* synchronous output report */
1190 ret = hid_hw_output_report(hid, buf, len);
1191 if (ret == -ENOSYS)
1192 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1193 HID_REQ_SET_REPORT);
1194 kfree(buf);
1195}
1196
1197static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1198 unsigned int code, int value)
1199{
1200 struct hid_device *hid = input_get_drvdata(dev);
1201 struct hid_field *field;
1202 int offset;
1203
1204 if (type == EV_FF)
1205 return input_ff_event(dev, type, code, value);
1206
1207 if (type != EV_LED)
1208 return -1;
1209
1210 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1211 hid_warn(dev, "event field not found\n");
1212 return -1;
1213 }
1214
1215 hid_set_field(field, offset, value);
1216
1217 schedule_work(&hid->led_work);
1218 return 0;
1219}
1220
1221static int hidinput_open(struct input_dev *dev)
1222{
1223 struct hid_device *hid = input_get_drvdata(dev);
1224
1225 return hid_hw_open(hid);
1226}
1227
1228static void hidinput_close(struct input_dev *dev)
1229{
1230 struct hid_device *hid = input_get_drvdata(dev);
1231
1232 hid_hw_close(hid);
1233}
1234
1235static void report_features(struct hid_device *hid)
1236{
1237 struct hid_driver *drv = hid->driver;
1238 struct hid_report_enum *rep_enum;
1239 struct hid_report *rep;
1240 int i, j;
1241
1242 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1243 list_for_each_entry(rep, &rep_enum->report_list, list)
1244 for (i = 0; i < rep->maxfield; i++) {
1245 /* Ignore if report count is out of bounds. */
1246 if (rep->field[i]->report_count < 1)
1247 continue;
1248
1249 for (j = 0; j < rep->field[i]->maxusage; j++) {
1250 /* Verify if Battery Strength feature is available */
1251 hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);
1252
1253 if (drv->feature_mapping)
1254 drv->feature_mapping(hid, rep->field[i],
1255 rep->field[i]->usage + j);
1256 }
1257 }
1258}
1259
1260static struct hid_input *hidinput_allocate(struct hid_device *hid)
1261{
1262 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1263 struct input_dev *input_dev = input_allocate_device();
1264 if (!hidinput || !input_dev) {
1265 kfree(hidinput);
1266 input_free_device(input_dev);
1267 hid_err(hid, "Out of memory during hid input probe\n");
1268 return NULL;
1269 }
1270
1271 input_set_drvdata(input_dev, hid);
1272 input_dev->event = hidinput_input_event;
1273 input_dev->open = hidinput_open;
1274 input_dev->close = hidinput_close;
1275 input_dev->setkeycode = hidinput_setkeycode;
1276 input_dev->getkeycode = hidinput_getkeycode;
1277
1278 input_dev->name = hid->name;
1279 input_dev->phys = hid->phys;
1280 input_dev->uniq = hid->uniq;
1281 input_dev->id.bustype = hid->bus;
1282 input_dev->id.vendor = hid->vendor;
1283 input_dev->id.product = hid->product;
1284 input_dev->id.version = hid->version;
1285 input_dev->dev.parent = &hid->dev;
1286 hidinput->input = input_dev;
1287 list_add_tail(&hidinput->list, &hid->inputs);
1288
1289 return hidinput;
1290}
1291
1292static bool hidinput_has_been_populated(struct hid_input *hidinput)
1293{
1294 int i;
1295 unsigned long r = 0;
1296
1297 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
1298 r |= hidinput->input->evbit[i];
1299
1300 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
1301 r |= hidinput->input->keybit[i];
1302
1303 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
1304 r |= hidinput->input->relbit[i];
1305
1306 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
1307 r |= hidinput->input->absbit[i];
1308
1309 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
1310 r |= hidinput->input->mscbit[i];
1311
1312 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
1313 r |= hidinput->input->ledbit[i];
1314
1315 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
1316 r |= hidinput->input->sndbit[i];
1317
1318 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
1319 r |= hidinput->input->ffbit[i];
1320
1321 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
1322 r |= hidinput->input->swbit[i];
1323
1324 return !!r;
1325}
1326
1327static void hidinput_cleanup_hidinput(struct hid_device *hid,
1328 struct hid_input *hidinput)
1329{
1330 struct hid_report *report;
1331 int i, k;
1332
1333 list_del(&hidinput->list);
1334 input_free_device(hidinput->input);
1335
1336 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1337 if (k == HID_OUTPUT_REPORT &&
1338 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1339 continue;
1340
1341 list_for_each_entry(report, &hid->report_enum[k].report_list,
1342 list) {
1343
1344 for (i = 0; i < report->maxfield; i++)
1345 if (report->field[i]->hidinput == hidinput)
1346 report->field[i]->hidinput = NULL;
1347 }
1348 }
1349
1350 kfree(hidinput);
1351}
1352
1353/*
1354 * Register the input device; print a message.
1355 * Configure the input layer interface
1356 * Read all reports and initialize the absolute field values.
1357 */
1358
1359int hidinput_connect(struct hid_device *hid, unsigned int force)
1360{
1361 struct hid_driver *drv = hid->driver;
1362 struct hid_report *report;
1363 struct hid_input *hidinput = NULL;
1364 int i, j, k;
1365
1366 INIT_LIST_HEAD(&hid->inputs);
1367 INIT_WORK(&hid->led_work, hidinput_led_worker);
1368
1369 if (!force) {
1370 for (i = 0; i < hid->maxcollection; i++) {
1371 struct hid_collection *col = &hid->collection[i];
1372 if (col->type == HID_COLLECTION_APPLICATION ||
1373 col->type == HID_COLLECTION_PHYSICAL)
1374 if (IS_INPUT_APPLICATION(col->usage))
1375 break;
1376 }
1377
1378 if (i == hid->maxcollection)
1379 return -1;
1380 }
1381
1382 report_features(hid);
1383
1384 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1385 if (k == HID_OUTPUT_REPORT &&
1386 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1387 continue;
1388
1389 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1390
1391 if (!report->maxfield)
1392 continue;
1393
1394 if (!hidinput) {
1395 hidinput = hidinput_allocate(hid);
1396 if (!hidinput)
1397 goto out_unwind;
1398 }
1399
1400 for (i = 0; i < report->maxfield; i++)
1401 for (j = 0; j < report->field[i]->maxusage; j++)
1402 hidinput_configure_usage(hidinput, report->field[i],
1403 report->field[i]->usage + j);
1404
1405 if ((hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1406 !hidinput_has_been_populated(hidinput))
1407 continue;
1408
1409 if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
1410 /* This will leave hidinput NULL, so that it
1411 * allocates another one if we have more inputs on
1412 * the same interface. Some devices (e.g. Happ's
1413 * UGCI) cram a lot of unrelated inputs into the
1414 * same interface. */
1415 hidinput->report = report;
1416 if (drv->input_configured)
1417 drv->input_configured(hid, hidinput);
1418 if (input_register_device(hidinput->input))
1419 goto out_cleanup;
1420 hidinput = NULL;
1421 }
1422 }
1423 }
1424
1425 if (hidinput && (hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1426 !hidinput_has_been_populated(hidinput)) {
1427 /* no need to register an input device not populated */
1428 hidinput_cleanup_hidinput(hid, hidinput);
1429 hidinput = NULL;
1430 }
1431
1432 if (list_empty(&hid->inputs)) {
1433 hid_err(hid, "No inputs registered, leaving\n");
1434 goto out_unwind;
1435 }
1436
1437 if (hidinput) {
1438 if (drv->input_configured)
1439 drv->input_configured(hid, hidinput);
1440 if (input_register_device(hidinput->input))
1441 goto out_cleanup;
1442 }
1443
1444 return 0;
1445
1446out_cleanup:
1447 list_del(&hidinput->list);
1448 input_free_device(hidinput->input);
1449 kfree(hidinput);
1450out_unwind:
1451 /* unwind the ones we already registered */
1452 hidinput_disconnect(hid);
1453
1454 return -1;
1455}
1456EXPORT_SYMBOL_GPL(hidinput_connect);
1457
1458void hidinput_disconnect(struct hid_device *hid)
1459{
1460 struct hid_input *hidinput, *next;
1461
1462 hidinput_cleanup_battery(hid);
1463
1464 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1465 list_del(&hidinput->list);
1466 input_unregister_device(hidinput->input);
1467 kfree(hidinput);
1468 }
1469
1470 /* led_work is spawned by input_dev callbacks, but doesn't access the
1471 * parent input_dev at all. Once all input devices are removed, we
1472 * know that led_work will never get restarted, so we can cancel it
1473 * synchronously and are safe. */
1474 cancel_work_sync(&hid->led_work);
1475}
1476EXPORT_SYMBOL_GPL(hidinput_disconnect);
1477