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[mirror_ubuntu-artful-kernel.git] / drivers / hid / hid-input.c
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
39 static 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
58 static 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
73 static 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
79 static 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
88 static bool match_index(struct hid_usage *usage,
89 unsigned int cur_idx, unsigned int idx)
90 {
91 return cur_idx == idx;
92 }
93
94 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
95 unsigned int cur_idx, unsigned int val);
96
97 static 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
126 static 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
143 static 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
164 static 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 }
292 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
293
294 #ifdef CONFIG_HID_BATTERY_STRENGTH
295 static 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
307 static 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
320 static 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
332 static 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
392 static 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
445 out:
446 return true;
447 }
448
449 static 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 */
459 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
460 struct hid_field *field)
461 {
462 return false;
463 }
464
465 static void hidinput_cleanup_battery(struct hid_device *dev)
466 {
467 }
468 #endif /* CONFIG_HID_BATTERY_STRENGTH */
469
470 static 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 if (field->flags & HID_MAIN_ITEM_RELATIVE)
603 map_rel(usage->hid & 0xf);
604 else
605 map_abs_clear(usage->hid & 0xf);
606 break;
607
608 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
609 if (field->flags & HID_MAIN_ITEM_RELATIVE)
610 map_rel(usage->hid & 0xf);
611 else
612 map_abs(usage->hid & 0xf);
613 break;
614
615 case HID_GD_HATSWITCH:
616 usage->hat_min = field->logical_minimum;
617 usage->hat_max = field->logical_maximum;
618 map_abs(ABS_HAT0X);
619 break;
620
621 case HID_GD_START: map_key_clear(BTN_START); break;
622 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
623
624 default: goto unknown;
625 }
626
627 break;
628
629 case HID_UP_LED:
630 switch (usage->hid & 0xffff) { /* HID-Value: */
631 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
632 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
633 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
634 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
635 case 0x05: map_led (LED_KANA); break; /* "Kana" */
636 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
637 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
638 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
639 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
640 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
641 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
642
643 default: goto ignore;
644 }
645 break;
646
647 case HID_UP_DIGITIZER:
648 switch (usage->hid & 0xff) {
649 case 0x00: /* Undefined */
650 goto ignore;
651
652 case 0x30: /* TipPressure */
653 if (!test_bit(BTN_TOUCH, input->keybit)) {
654 device->quirks |= HID_QUIRK_NOTOUCH;
655 set_bit(EV_KEY, input->evbit);
656 set_bit(BTN_TOUCH, input->keybit);
657 }
658 map_abs_clear(ABS_PRESSURE);
659 break;
660
661 case 0x32: /* InRange */
662 switch (field->physical & 0xff) {
663 case 0x21: map_key(BTN_TOOL_MOUSE); break;
664 case 0x22: map_key(BTN_TOOL_FINGER); break;
665 default: map_key(BTN_TOOL_PEN); break;
666 }
667 break;
668
669 case 0x3c: /* Invert */
670 map_key_clear(BTN_TOOL_RUBBER);
671 break;
672
673 case 0x3d: /* X Tilt */
674 map_abs_clear(ABS_TILT_X);
675 break;
676
677 case 0x3e: /* Y Tilt */
678 map_abs_clear(ABS_TILT_Y);
679 break;
680
681 case 0x33: /* Touch */
682 case 0x42: /* TipSwitch */
683 case 0x43: /* TipSwitch2 */
684 device->quirks &= ~HID_QUIRK_NOTOUCH;
685 map_key_clear(BTN_TOUCH);
686 break;
687
688 case 0x44: /* BarrelSwitch */
689 map_key_clear(BTN_STYLUS);
690 break;
691
692 case 0x46: /* TabletPick */
693 case 0x5a: /* SecondaryBarrelSwitch */
694 map_key_clear(BTN_STYLUS2);
695 break;
696
697 case 0x5b: /* TransducerSerialNumber */
698 usage->type = EV_MSC;
699 usage->code = MSC_SERIAL;
700 bit = input->mscbit;
701 max = MSC_MAX;
702 break;
703
704 default: goto unknown;
705 }
706 break;
707
708 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
709 switch (usage->hid & HID_USAGE) {
710 case 0x000: goto ignore;
711 case 0x030: map_key_clear(KEY_POWER); break;
712 case 0x031: map_key_clear(KEY_RESTART); break;
713 case 0x032: map_key_clear(KEY_SLEEP); break;
714 case 0x034: map_key_clear(KEY_SLEEP); break;
715 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
716 case 0x036: map_key_clear(BTN_MISC); break;
717
718 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
719 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
720 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
721 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
722 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
723 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
724 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
725 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
726 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
727
728 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
729 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
730 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
731 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
732 case 0x069: map_key_clear(KEY_RED); break;
733 case 0x06a: map_key_clear(KEY_GREEN); break;
734 case 0x06b: map_key_clear(KEY_BLUE); break;
735 case 0x06c: map_key_clear(KEY_YELLOW); break;
736 case 0x06d: map_key_clear(KEY_ZOOM); break;
737
738 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
739 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
740 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
741 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
742 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
743 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
744
745 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
746 case 0x083: map_key_clear(KEY_LAST); break;
747 case 0x084: map_key_clear(KEY_ENTER); break;
748 case 0x088: map_key_clear(KEY_PC); break;
749 case 0x089: map_key_clear(KEY_TV); break;
750 case 0x08a: map_key_clear(KEY_WWW); break;
751 case 0x08b: map_key_clear(KEY_DVD); break;
752 case 0x08c: map_key_clear(KEY_PHONE); break;
753 case 0x08d: map_key_clear(KEY_PROGRAM); break;
754 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
755 case 0x08f: map_key_clear(KEY_GAMES); break;
756 case 0x090: map_key_clear(KEY_MEMO); break;
757 case 0x091: map_key_clear(KEY_CD); break;
758 case 0x092: map_key_clear(KEY_VCR); break;
759 case 0x093: map_key_clear(KEY_TUNER); break;
760 case 0x094: map_key_clear(KEY_EXIT); break;
761 case 0x095: map_key_clear(KEY_HELP); break;
762 case 0x096: map_key_clear(KEY_TAPE); break;
763 case 0x097: map_key_clear(KEY_TV2); break;
764 case 0x098: map_key_clear(KEY_SAT); break;
765 case 0x09a: map_key_clear(KEY_PVR); break;
766
767 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
768 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
769 case 0x0a0: map_key_clear(KEY_VCR2); break;
770
771 case 0x0b0: map_key_clear(KEY_PLAY); break;
772 case 0x0b1: map_key_clear(KEY_PAUSE); break;
773 case 0x0b2: map_key_clear(KEY_RECORD); break;
774 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
775 case 0x0b4: map_key_clear(KEY_REWIND); break;
776 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
777 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
778 case 0x0b7: map_key_clear(KEY_STOPCD); break;
779 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
780 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
781 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
782 case 0x0bf: map_key_clear(KEY_SLOW); break;
783
784 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
785 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
786 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
787 case 0x0e2: map_key_clear(KEY_MUTE); break;
788 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
789 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
790 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
791 case 0x0f5: map_key_clear(KEY_SLOW); break;
792
793 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
794 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
795 case 0x183: map_key_clear(KEY_CONFIG); break;
796 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
797 case 0x185: map_key_clear(KEY_EDITOR); break;
798 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
799 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
800 case 0x188: map_key_clear(KEY_PRESENTATION); break;
801 case 0x189: map_key_clear(KEY_DATABASE); break;
802 case 0x18a: map_key_clear(KEY_MAIL); break;
803 case 0x18b: map_key_clear(KEY_NEWS); break;
804 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
805 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
806 case 0x18e: map_key_clear(KEY_CALENDAR); break;
807 case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
808 case 0x190: map_key_clear(KEY_JOURNAL); break;
809 case 0x191: map_key_clear(KEY_FINANCE); break;
810 case 0x192: map_key_clear(KEY_CALC); break;
811 case 0x193: map_key_clear(KEY_PLAYER); break;
812 case 0x194: map_key_clear(KEY_FILE); break;
813 case 0x196: map_key_clear(KEY_WWW); break;
814 case 0x199: map_key_clear(KEY_CHAT); break;
815 case 0x19c: map_key_clear(KEY_LOGOFF); break;
816 case 0x19e: map_key_clear(KEY_COFFEE); break;
817 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
818 case 0x1a2: map_key_clear(KEY_APPSELECT); break;
819 case 0x1a3: map_key_clear(KEY_NEXT); break;
820 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
821 case 0x1a6: map_key_clear(KEY_HELP); break;
822 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
823 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
824 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
825 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
826 case 0x1b4: map_key_clear(KEY_FILE); break;
827 case 0x1b6: map_key_clear(KEY_IMAGES); break;
828 case 0x1b7: map_key_clear(KEY_AUDIO); break;
829 case 0x1b8: map_key_clear(KEY_VIDEO); break;
830 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
831 case 0x1bd: map_key_clear(KEY_INFO); break;
832 case 0x201: map_key_clear(KEY_NEW); break;
833 case 0x202: map_key_clear(KEY_OPEN); break;
834 case 0x203: map_key_clear(KEY_CLOSE); break;
835 case 0x204: map_key_clear(KEY_EXIT); break;
836 case 0x207: map_key_clear(KEY_SAVE); break;
837 case 0x208: map_key_clear(KEY_PRINT); break;
838 case 0x209: map_key_clear(KEY_PROPS); break;
839 case 0x21a: map_key_clear(KEY_UNDO); break;
840 case 0x21b: map_key_clear(KEY_COPY); break;
841 case 0x21c: map_key_clear(KEY_CUT); break;
842 case 0x21d: map_key_clear(KEY_PASTE); break;
843 case 0x21f: map_key_clear(KEY_FIND); break;
844 case 0x221: map_key_clear(KEY_SEARCH); break;
845 case 0x222: map_key_clear(KEY_GOTO); break;
846 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
847 case 0x224: map_key_clear(KEY_BACK); break;
848 case 0x225: map_key_clear(KEY_FORWARD); break;
849 case 0x226: map_key_clear(KEY_STOP); break;
850 case 0x227: map_key_clear(KEY_REFRESH); break;
851 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
852 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
853 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
854 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
855 case 0x233: map_key_clear(KEY_SCROLLUP); break;
856 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
857 case 0x238: map_rel(REL_HWHEEL); break;
858 case 0x23d: map_key_clear(KEY_EDIT); break;
859 case 0x25f: map_key_clear(KEY_CANCEL); break;
860 case 0x269: map_key_clear(KEY_INSERT); break;
861 case 0x26a: map_key_clear(KEY_DELETE); break;
862 case 0x279: map_key_clear(KEY_REDO); break;
863
864 case 0x289: map_key_clear(KEY_REPLY); break;
865 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
866 case 0x28c: map_key_clear(KEY_SEND); break;
867
868 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
869 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
870 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
871 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
872 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
873 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
874
875 default: goto ignore;
876 }
877 break;
878
879 case HID_UP_GENDEVCTRLS:
880 if (hidinput_setup_battery(device, HID_INPUT_REPORT, field))
881 goto ignore;
882 else
883 goto unknown;
884 break;
885
886 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
887 set_bit(EV_REP, input->evbit);
888 switch (usage->hid & HID_USAGE) {
889 case 0x021: map_key_clear(KEY_PRINT); break;
890 case 0x070: map_key_clear(KEY_HP); break;
891 case 0x071: map_key_clear(KEY_CAMERA); break;
892 case 0x072: map_key_clear(KEY_SOUND); break;
893 case 0x073: map_key_clear(KEY_QUESTION); break;
894 case 0x080: map_key_clear(KEY_EMAIL); break;
895 case 0x081: map_key_clear(KEY_CHAT); break;
896 case 0x082: map_key_clear(KEY_SEARCH); break;
897 case 0x083: map_key_clear(KEY_CONNECT); break;
898 case 0x084: map_key_clear(KEY_FINANCE); break;
899 case 0x085: map_key_clear(KEY_SPORT); break;
900 case 0x086: map_key_clear(KEY_SHOP); break;
901 default: goto ignore;
902 }
903 break;
904
905 case HID_UP_HPVENDOR2:
906 set_bit(EV_REP, input->evbit);
907 switch (usage->hid & HID_USAGE) {
908 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
909 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
910 default: goto ignore;
911 }
912 break;
913
914 case HID_UP_MSVENDOR:
915 goto ignore;
916
917 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
918 set_bit(EV_REP, input->evbit);
919 goto ignore;
920
921 case HID_UP_LOGIVENDOR:
922 goto ignore;
923
924 case HID_UP_PID:
925 switch (usage->hid & HID_USAGE) {
926 case 0xa4: map_key_clear(BTN_DEAD); break;
927 default: goto ignore;
928 }
929 break;
930
931 default:
932 unknown:
933 if (field->report_size == 1) {
934 if (field->report->type == HID_OUTPUT_REPORT) {
935 map_led(LED_MISC);
936 break;
937 }
938 map_key(BTN_MISC);
939 break;
940 }
941 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
942 map_rel(REL_MISC);
943 break;
944 }
945 map_abs(ABS_MISC);
946 break;
947 }
948
949 mapped:
950 if (device->driver->input_mapped && device->driver->input_mapped(device,
951 hidinput, field, usage, &bit, &max) < 0)
952 goto ignore;
953
954 set_bit(usage->type, input->evbit);
955
956 while (usage->code <= max && test_and_set_bit(usage->code, bit))
957 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
958
959 if (usage->code > max)
960 goto ignore;
961
962
963 if (usage->type == EV_ABS) {
964
965 int a = field->logical_minimum;
966 int b = field->logical_maximum;
967
968 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
969 a = field->logical_minimum = 0;
970 b = field->logical_maximum = 255;
971 }
972
973 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
974 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
975 else input_set_abs_params(input, usage->code, a, b, 0, 0);
976
977 input_abs_set_res(input, usage->code,
978 hidinput_calc_abs_res(field, usage->code));
979
980 /* use a larger default input buffer for MT devices */
981 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
982 input_set_events_per_packet(input, 60);
983 }
984
985 if (usage->type == EV_ABS &&
986 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
987 int i;
988 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
989 input_set_abs_params(input, i, -1, 1, 0, 0);
990 set_bit(i, input->absbit);
991 }
992 if (usage->hat_dir && !field->dpad)
993 field->dpad = usage->code;
994 }
995
996 /* for those devices which produce Consumer volume usage as relative,
997 * we emulate pressing volumeup/volumedown appropriate number of times
998 * in hidinput_hid_event()
999 */
1000 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1001 (usage->code == ABS_VOLUME)) {
1002 set_bit(KEY_VOLUMEUP, input->keybit);
1003 set_bit(KEY_VOLUMEDOWN, input->keybit);
1004 }
1005
1006 if (usage->type == EV_KEY) {
1007 set_bit(EV_MSC, input->evbit);
1008 set_bit(MSC_SCAN, input->mscbit);
1009 }
1010
1011 ignore:
1012 return;
1013
1014 }
1015
1016 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1017 {
1018 struct input_dev *input;
1019 unsigned *quirks = &hid->quirks;
1020
1021 if (!field->hidinput)
1022 return;
1023
1024 input = field->hidinput->input;
1025
1026 if (!usage->type)
1027 return;
1028
1029 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1030 int hat_dir = usage->hat_dir;
1031 if (!hat_dir)
1032 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1033 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1034 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
1035 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1036 return;
1037 }
1038
1039 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
1040 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
1041 return;
1042 }
1043
1044 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
1045 if (value) {
1046 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
1047 return;
1048 }
1049 input_event(input, usage->type, usage->code, 0);
1050 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
1051 return;
1052 }
1053
1054 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
1055 int a = field->logical_minimum;
1056 int b = field->logical_maximum;
1057 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
1058 }
1059
1060 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
1061 dbg_hid("Maximum Effects - %d\n",value);
1062 return;
1063 }
1064
1065 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
1066 dbg_hid("PID Pool Report\n");
1067 return;
1068 }
1069
1070 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1071 return;
1072
1073 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1074 (usage->code == ABS_VOLUME)) {
1075 int count = abs(value);
1076 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1077 int i;
1078
1079 for (i = 0; i < count; i++) {
1080 input_event(input, EV_KEY, direction, 1);
1081 input_sync(input);
1082 input_event(input, EV_KEY, direction, 0);
1083 input_sync(input);
1084 }
1085 return;
1086 }
1087
1088 /*
1089 * Ignore out-of-range values as per HID specification,
1090 * section 5.10 and 6.2.25.
1091 *
1092 * The logical_minimum < logical_maximum check is done so that we
1093 * don't unintentionally discard values sent by devices which
1094 * don't specify logical min and max.
1095 */
1096 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1097 (field->logical_minimum < field->logical_maximum) &&
1098 (value < field->logical_minimum ||
1099 value > field->logical_maximum)) {
1100 dbg_hid("Ignoring out-of-range value %x\n", value);
1101 return;
1102 }
1103
1104 /* report the usage code as scancode if the key status has changed */
1105 if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
1106 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1107
1108 input_event(input, usage->type, usage->code, value);
1109
1110 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
1111 input_event(input, usage->type, usage->code, 0);
1112 }
1113
1114 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1115 {
1116 struct hid_input *hidinput;
1117
1118 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1119 return;
1120
1121 list_for_each_entry(hidinput, &hid->inputs, list)
1122 input_sync(hidinput->input);
1123 }
1124 EXPORT_SYMBOL_GPL(hidinput_report_event);
1125
1126 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1127 {
1128 struct hid_report *report;
1129 int i, j;
1130
1131 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1132 for (i = 0; i < report->maxfield; i++) {
1133 *field = report->field[i];
1134 for (j = 0; j < (*field)->maxusage; j++)
1135 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1136 return j;
1137 }
1138 }
1139 return -1;
1140 }
1141 EXPORT_SYMBOL_GPL(hidinput_find_field);
1142
1143 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1144 {
1145 struct hid_report *report;
1146 struct hid_field *field;
1147 int i, j;
1148
1149 list_for_each_entry(report,
1150 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1151 list) {
1152 for (i = 0; i < report->maxfield; i++) {
1153 field = report->field[i];
1154 for (j = 0; j < field->maxusage; j++)
1155 if (field->usage[j].type == EV_LED)
1156 return field;
1157 }
1158 }
1159 return NULL;
1160 }
1161 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1162
1163 unsigned int hidinput_count_leds(struct hid_device *hid)
1164 {
1165 struct hid_report *report;
1166 struct hid_field *field;
1167 int i, j;
1168 unsigned int count = 0;
1169
1170 list_for_each_entry(report,
1171 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1172 list) {
1173 for (i = 0; i < report->maxfield; i++) {
1174 field = report->field[i];
1175 for (j = 0; j < field->maxusage; j++)
1176 if (field->usage[j].type == EV_LED &&
1177 field->value[j])
1178 count += 1;
1179 }
1180 }
1181 return count;
1182 }
1183 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1184
1185 static void hidinput_led_worker(struct work_struct *work)
1186 {
1187 struct hid_device *hid = container_of(work, struct hid_device,
1188 led_work);
1189 struct hid_field *field;
1190 struct hid_report *report;
1191 int len, ret;
1192 __u8 *buf;
1193
1194 field = hidinput_get_led_field(hid);
1195 if (!field)
1196 return;
1197
1198 /*
1199 * field->report is accessed unlocked regarding HID core. So there might
1200 * be another incoming SET-LED request from user-space, which changes
1201 * the LED state while we assemble our outgoing buffer. However, this
1202 * doesn't matter as hid_output_report() correctly converts it into a
1203 * boolean value no matter what information is currently set on the LED
1204 * field (even garbage). So the remote device will always get a valid
1205 * request.
1206 * And in case we send a wrong value, a next led worker is spawned
1207 * for every SET-LED request so the following worker will send the
1208 * correct value, guaranteed!
1209 */
1210
1211 report = field->report;
1212
1213 /* use custom SET_REPORT request if possible (asynchronous) */
1214 if (hid->ll_driver->request)
1215 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1216
1217 /* fall back to generic raw-output-report */
1218 len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1219 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1220 if (!buf)
1221 return;
1222
1223 hid_output_report(report, buf);
1224 /* synchronous output report */
1225 ret = hid_hw_output_report(hid, buf, len);
1226 if (ret == -ENOSYS)
1227 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1228 HID_REQ_SET_REPORT);
1229 kfree(buf);
1230 }
1231
1232 static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1233 unsigned int code, int value)
1234 {
1235 struct hid_device *hid = input_get_drvdata(dev);
1236 struct hid_field *field;
1237 int offset;
1238
1239 if (type == EV_FF)
1240 return input_ff_event(dev, type, code, value);
1241
1242 if (type != EV_LED)
1243 return -1;
1244
1245 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1246 hid_warn(dev, "event field not found\n");
1247 return -1;
1248 }
1249
1250 hid_set_field(field, offset, value);
1251
1252 schedule_work(&hid->led_work);
1253 return 0;
1254 }
1255
1256 static int hidinput_open(struct input_dev *dev)
1257 {
1258 struct hid_device *hid = input_get_drvdata(dev);
1259
1260 return hid_hw_open(hid);
1261 }
1262
1263 static void hidinput_close(struct input_dev *dev)
1264 {
1265 struct hid_device *hid = input_get_drvdata(dev);
1266
1267 hid_hw_close(hid);
1268 }
1269
1270 static void report_features(struct hid_device *hid)
1271 {
1272 struct hid_driver *drv = hid->driver;
1273 struct hid_report_enum *rep_enum;
1274 struct hid_report *rep;
1275 int i, j;
1276
1277 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1278 list_for_each_entry(rep, &rep_enum->report_list, list)
1279 for (i = 0; i < rep->maxfield; i++) {
1280 /* Ignore if report count is out of bounds. */
1281 if (rep->field[i]->report_count < 1)
1282 continue;
1283
1284 for (j = 0; j < rep->field[i]->maxusage; j++) {
1285 /* Verify if Battery Strength feature is available */
1286 hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);
1287
1288 if (drv->feature_mapping)
1289 drv->feature_mapping(hid, rep->field[i],
1290 rep->field[i]->usage + j);
1291 }
1292 }
1293 }
1294
1295 static struct hid_input *hidinput_allocate(struct hid_device *hid)
1296 {
1297 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1298 struct input_dev *input_dev = input_allocate_device();
1299 if (!hidinput || !input_dev) {
1300 kfree(hidinput);
1301 input_free_device(input_dev);
1302 hid_err(hid, "Out of memory during hid input probe\n");
1303 return NULL;
1304 }
1305
1306 input_set_drvdata(input_dev, hid);
1307 input_dev->event = hidinput_input_event;
1308 input_dev->open = hidinput_open;
1309 input_dev->close = hidinput_close;
1310 input_dev->setkeycode = hidinput_setkeycode;
1311 input_dev->getkeycode = hidinput_getkeycode;
1312
1313 input_dev->name = hid->name;
1314 input_dev->phys = hid->phys;
1315 input_dev->uniq = hid->uniq;
1316 input_dev->id.bustype = hid->bus;
1317 input_dev->id.vendor = hid->vendor;
1318 input_dev->id.product = hid->product;
1319 input_dev->id.version = hid->version;
1320 input_dev->dev.parent = &hid->dev;
1321 hidinput->input = input_dev;
1322 list_add_tail(&hidinput->list, &hid->inputs);
1323
1324 return hidinput;
1325 }
1326
1327 static bool hidinput_has_been_populated(struct hid_input *hidinput)
1328 {
1329 int i;
1330 unsigned long r = 0;
1331
1332 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
1333 r |= hidinput->input->evbit[i];
1334
1335 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
1336 r |= hidinput->input->keybit[i];
1337
1338 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
1339 r |= hidinput->input->relbit[i];
1340
1341 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
1342 r |= hidinput->input->absbit[i];
1343
1344 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
1345 r |= hidinput->input->mscbit[i];
1346
1347 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
1348 r |= hidinput->input->ledbit[i];
1349
1350 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
1351 r |= hidinput->input->sndbit[i];
1352
1353 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
1354 r |= hidinput->input->ffbit[i];
1355
1356 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
1357 r |= hidinput->input->swbit[i];
1358
1359 return !!r;
1360 }
1361
1362 static void hidinput_cleanup_hidinput(struct hid_device *hid,
1363 struct hid_input *hidinput)
1364 {
1365 struct hid_report *report;
1366 int i, k;
1367
1368 list_del(&hidinput->list);
1369 input_free_device(hidinput->input);
1370
1371 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1372 if (k == HID_OUTPUT_REPORT &&
1373 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1374 continue;
1375
1376 list_for_each_entry(report, &hid->report_enum[k].report_list,
1377 list) {
1378
1379 for (i = 0; i < report->maxfield; i++)
1380 if (report->field[i]->hidinput == hidinput)
1381 report->field[i]->hidinput = NULL;
1382 }
1383 }
1384
1385 kfree(hidinput);
1386 }
1387
1388 /*
1389 * Register the input device; print a message.
1390 * Configure the input layer interface
1391 * Read all reports and initialize the absolute field values.
1392 */
1393
1394 int hidinput_connect(struct hid_device *hid, unsigned int force)
1395 {
1396 struct hid_driver *drv = hid->driver;
1397 struct hid_report *report;
1398 struct hid_input *hidinput = NULL;
1399 int i, j, k;
1400
1401 INIT_LIST_HEAD(&hid->inputs);
1402 INIT_WORK(&hid->led_work, hidinput_led_worker);
1403
1404 if (!force) {
1405 for (i = 0; i < hid->maxcollection; i++) {
1406 struct hid_collection *col = &hid->collection[i];
1407 if (col->type == HID_COLLECTION_APPLICATION ||
1408 col->type == HID_COLLECTION_PHYSICAL)
1409 if (IS_INPUT_APPLICATION(col->usage))
1410 break;
1411 }
1412
1413 if (i == hid->maxcollection)
1414 return -1;
1415 }
1416
1417 report_features(hid);
1418
1419 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1420 if (k == HID_OUTPUT_REPORT &&
1421 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1422 continue;
1423
1424 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1425
1426 if (!report->maxfield)
1427 continue;
1428
1429 if (!hidinput) {
1430 hidinput = hidinput_allocate(hid);
1431 if (!hidinput)
1432 goto out_unwind;
1433 }
1434
1435 for (i = 0; i < report->maxfield; i++)
1436 for (j = 0; j < report->field[i]->maxusage; j++)
1437 hidinput_configure_usage(hidinput, report->field[i],
1438 report->field[i]->usage + j);
1439
1440 if ((hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1441 !hidinput_has_been_populated(hidinput))
1442 continue;
1443
1444 if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
1445 /* This will leave hidinput NULL, so that it
1446 * allocates another one if we have more inputs on
1447 * the same interface. Some devices (e.g. Happ's
1448 * UGCI) cram a lot of unrelated inputs into the
1449 * same interface. */
1450 hidinput->report = report;
1451 if (drv->input_configured)
1452 drv->input_configured(hid, hidinput);
1453 if (input_register_device(hidinput->input))
1454 goto out_cleanup;
1455 hidinput = NULL;
1456 }
1457 }
1458 }
1459
1460 if (hidinput && (hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1461 !hidinput_has_been_populated(hidinput)) {
1462 /* no need to register an input device not populated */
1463 hidinput_cleanup_hidinput(hid, hidinput);
1464 hidinput = NULL;
1465 }
1466
1467 if (list_empty(&hid->inputs)) {
1468 hid_err(hid, "No inputs registered, leaving\n");
1469 goto out_unwind;
1470 }
1471
1472 if (hidinput) {
1473 if (drv->input_configured)
1474 drv->input_configured(hid, hidinput);
1475 if (input_register_device(hidinput->input))
1476 goto out_cleanup;
1477 }
1478
1479 return 0;
1480
1481 out_cleanup:
1482 list_del(&hidinput->list);
1483 input_free_device(hidinput->input);
1484 kfree(hidinput);
1485 out_unwind:
1486 /* unwind the ones we already registered */
1487 hidinput_disconnect(hid);
1488
1489 return -1;
1490 }
1491 EXPORT_SYMBOL_GPL(hidinput_connect);
1492
1493 void hidinput_disconnect(struct hid_device *hid)
1494 {
1495 struct hid_input *hidinput, *next;
1496
1497 hidinput_cleanup_battery(hid);
1498
1499 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1500 list_del(&hidinput->list);
1501 input_unregister_device(hidinput->input);
1502 kfree(hidinput);
1503 }
1504
1505 /* led_work is spawned by input_dev callbacks, but doesn't access the
1506 * parent input_dev at all. Once all input devices are removed, we
1507 * know that led_work will never get restarted, so we can cancel it
1508 * synchronously and are safe. */
1509 cancel_work_sync(&hid->led_work);
1510 }
1511 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1512
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