Merge branch 'for-4.18/multitouch' into for-linus
[sfrench/cifs-2.6.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_WHEEL:
257         case ABS_TILT_X:
258         case ABS_TILT_Y:
259                 if (field->unit == 0x14) {              /* If degrees */
260                         /* Convert to radians */
261                         prev = logical_extents;
262                         logical_extents *= 573;
263                         if (logical_extents < prev)
264                                 return 0;
265                         unit_exponent += 1;
266                 } else if (field->unit != 0x12) {       /* If not radians */
267                         return 0;
268                 }
269                 break;
270
271         default:
272                 return 0;
273         }
274
275         /* Apply negative unit exponent */
276         for (; unit_exponent < 0; unit_exponent++) {
277                 prev = logical_extents;
278                 logical_extents *= 10;
279                 if (logical_extents < prev)
280                         return 0;
281         }
282         /* Apply positive unit exponent */
283         for (; unit_exponent > 0; unit_exponent--) {
284                 prev = physical_extents;
285                 physical_extents *= 10;
286                 if (physical_extents < prev)
287                         return 0;
288         }
289
290         /* Calculate resolution */
291         return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
292 }
293 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
294
295 #ifdef CONFIG_HID_BATTERY_STRENGTH
296 static enum power_supply_property hidinput_battery_props[] = {
297         POWER_SUPPLY_PROP_PRESENT,
298         POWER_SUPPLY_PROP_ONLINE,
299         POWER_SUPPLY_PROP_CAPACITY,
300         POWER_SUPPLY_PROP_MODEL_NAME,
301         POWER_SUPPLY_PROP_STATUS,
302         POWER_SUPPLY_PROP_SCOPE,
303 };
304
305 #define HID_BATTERY_QUIRK_PERCENT       (1 << 0) /* always reports percent */
306 #define HID_BATTERY_QUIRK_FEATURE       (1 << 1) /* ask for feature report */
307 #define HID_BATTERY_QUIRK_IGNORE        (1 << 2) /* completely ignore the battery */
308
309 static const struct hid_device_id hid_battery_quirks[] = {
310         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
311                 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
312           HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
313         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
314                 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
315           HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
316         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
317                 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
318           HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
319         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
320                                USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO),
321           HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
322         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
323                 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
324           HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
325         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM,
326                 USB_DEVICE_ID_ELECOM_BM084),
327           HID_BATTERY_QUIRK_IGNORE },
328         {}
329 };
330
331 static unsigned find_battery_quirk(struct hid_device *hdev)
332 {
333         unsigned quirks = 0;
334         const struct hid_device_id *match;
335
336         match = hid_match_id(hdev, hid_battery_quirks);
337         if (match != NULL)
338                 quirks = match->driver_data;
339
340         return quirks;
341 }
342
343 static int hidinput_scale_battery_capacity(struct hid_device *dev,
344                                            int value)
345 {
346         if (dev->battery_min < dev->battery_max &&
347             value >= dev->battery_min && value <= dev->battery_max)
348                 value = ((value - dev->battery_min) * 100) /
349                         (dev->battery_max - dev->battery_min);
350
351         return value;
352 }
353
354 static int hidinput_query_battery_capacity(struct hid_device *dev)
355 {
356         u8 *buf;
357         int ret;
358
359         buf = kmalloc(2, GFP_KERNEL);
360         if (!buf)
361                 return -ENOMEM;
362
363         ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2,
364                                  dev->battery_report_type, HID_REQ_GET_REPORT);
365         if (ret != 2) {
366                 kfree(buf);
367                 return -ENODATA;
368         }
369
370         ret = hidinput_scale_battery_capacity(dev, buf[1]);
371         kfree(buf);
372         return ret;
373 }
374
375 static int hidinput_get_battery_property(struct power_supply *psy,
376                                          enum power_supply_property prop,
377                                          union power_supply_propval *val)
378 {
379         struct hid_device *dev = power_supply_get_drvdata(psy);
380         int value;
381         int ret = 0;
382
383         switch (prop) {
384         case POWER_SUPPLY_PROP_PRESENT:
385         case POWER_SUPPLY_PROP_ONLINE:
386                 val->intval = 1;
387                 break;
388
389         case POWER_SUPPLY_PROP_CAPACITY:
390                 if (dev->battery_status != HID_BATTERY_REPORTED &&
391                     !dev->battery_avoid_query) {
392                         value = hidinput_query_battery_capacity(dev);
393                         if (value < 0)
394                                 return value;
395                 } else  {
396                         value = dev->battery_capacity;
397                 }
398
399                 val->intval = value;
400                 break;
401
402         case POWER_SUPPLY_PROP_MODEL_NAME:
403                 val->strval = dev->name;
404                 break;
405
406         case POWER_SUPPLY_PROP_STATUS:
407                 if (dev->battery_status != HID_BATTERY_REPORTED &&
408                     !dev->battery_avoid_query) {
409                         value = hidinput_query_battery_capacity(dev);
410                         if (value < 0)
411                                 return value;
412
413                         dev->battery_capacity = value;
414                         dev->battery_status = HID_BATTERY_QUERIED;
415                 }
416
417                 if (dev->battery_status == HID_BATTERY_UNKNOWN)
418                         val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
419                 else if (dev->battery_capacity == 100)
420                         val->intval = POWER_SUPPLY_STATUS_FULL;
421                 else
422                         val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
423                 break;
424
425         case POWER_SUPPLY_PROP_SCOPE:
426                 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
427                 break;
428
429         default:
430                 ret = -EINVAL;
431                 break;
432         }
433
434         return ret;
435 }
436
437 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
438 {
439         struct power_supply_desc *psy_desc;
440         struct power_supply_config psy_cfg = { .drv_data = dev, };
441         unsigned quirks;
442         s32 min, max;
443         int error;
444
445         if (dev->battery)
446                 return 0;       /* already initialized? */
447
448         quirks = find_battery_quirk(dev);
449
450         hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
451                 dev->bus, dev->vendor, dev->product, dev->version, quirks);
452
453         if (quirks & HID_BATTERY_QUIRK_IGNORE)
454                 return 0;
455
456         psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
457         if (!psy_desc)
458                 return -ENOMEM;
459
460         psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery",
461                                    strlen(dev->uniq) ?
462                                         dev->uniq : dev_name(&dev->dev));
463         if (!psy_desc->name) {
464                 error = -ENOMEM;
465                 goto err_free_mem;
466         }
467
468         psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
469         psy_desc->properties = hidinput_battery_props;
470         psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
471         psy_desc->use_for_apm = 0;
472         psy_desc->get_property = hidinput_get_battery_property;
473
474         min = field->logical_minimum;
475         max = field->logical_maximum;
476
477         if (quirks & HID_BATTERY_QUIRK_PERCENT) {
478                 min = 0;
479                 max = 100;
480         }
481
482         if (quirks & HID_BATTERY_QUIRK_FEATURE)
483                 report_type = HID_FEATURE_REPORT;
484
485         dev->battery_min = min;
486         dev->battery_max = max;
487         dev->battery_report_type = report_type;
488         dev->battery_report_id = field->report->id;
489
490         /*
491          * Stylus is normally not connected to the device and thus we
492          * can't query the device and get meaningful battery strength.
493          * We have to wait for the device to report it on its own.
494          */
495         dev->battery_avoid_query = report_type == HID_INPUT_REPORT &&
496                                    field->physical == HID_DG_STYLUS;
497
498         dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
499         if (IS_ERR(dev->battery)) {
500                 error = PTR_ERR(dev->battery);
501                 hid_warn(dev, "can't register power supply: %d\n", error);
502                 goto err_free_name;
503         }
504
505         power_supply_powers(dev->battery, &dev->dev);
506         return 0;
507
508 err_free_name:
509         kfree(psy_desc->name);
510 err_free_mem:
511         kfree(psy_desc);
512         dev->battery = NULL;
513         return error;
514 }
515
516 static void hidinput_cleanup_battery(struct hid_device *dev)
517 {
518         const struct power_supply_desc *psy_desc;
519
520         if (!dev->battery)
521                 return;
522
523         psy_desc = dev->battery->desc;
524         power_supply_unregister(dev->battery);
525         kfree(psy_desc->name);
526         kfree(psy_desc);
527         dev->battery = NULL;
528 }
529
530 static void hidinput_update_battery(struct hid_device *dev, int value)
531 {
532         int capacity;
533
534         if (!dev->battery)
535                 return;
536
537         if (value == 0 || value < dev->battery_min || value > dev->battery_max)
538                 return;
539
540         capacity = hidinput_scale_battery_capacity(dev, value);
541
542         if (dev->battery_status != HID_BATTERY_REPORTED ||
543             capacity != dev->battery_capacity) {
544                 dev->battery_capacity = capacity;
545                 dev->battery_status = HID_BATTERY_REPORTED;
546                 power_supply_changed(dev->battery);
547         }
548 }
549 #else  /* !CONFIG_HID_BATTERY_STRENGTH */
550 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
551                                   struct hid_field *field)
552 {
553         return 0;
554 }
555
556 static void hidinput_cleanup_battery(struct hid_device *dev)
557 {
558 }
559
560 static void hidinput_update_battery(struct hid_device *dev, int value)
561 {
562 }
563 #endif  /* CONFIG_HID_BATTERY_STRENGTH */
564
565 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
566                                      struct hid_usage *usage)
567 {
568         struct input_dev *input = hidinput->input;
569         struct hid_device *device = input_get_drvdata(input);
570         int max = 0, code;
571         unsigned long *bit = NULL;
572
573         field->hidinput = hidinput;
574
575         if (field->flags & HID_MAIN_ITEM_CONSTANT)
576                 goto ignore;
577
578         /* Ignore if report count is out of bounds. */
579         if (field->report_count < 1)
580                 goto ignore;
581
582         /* only LED usages are supported in output fields */
583         if (field->report_type == HID_OUTPUT_REPORT &&
584                         (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
585                 goto ignore;
586         }
587
588         if (device->driver->input_mapping) {
589                 int ret = device->driver->input_mapping(device, hidinput, field,
590                                 usage, &bit, &max);
591                 if (ret > 0)
592                         goto mapped;
593                 if (ret < 0)
594                         goto ignore;
595         }
596
597         switch (usage->hid & HID_USAGE_PAGE) {
598         case HID_UP_UNDEFINED:
599                 goto ignore;
600
601         case HID_UP_KEYBOARD:
602                 set_bit(EV_REP, input->evbit);
603
604                 if ((usage->hid & HID_USAGE) < 256) {
605                         if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
606                         map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
607                 } else
608                         map_key(KEY_UNKNOWN);
609
610                 break;
611
612         case HID_UP_BUTTON:
613                 code = ((usage->hid - 1) & HID_USAGE);
614
615                 switch (field->application) {
616                 case HID_GD_MOUSE:
617                 case HID_GD_POINTER:  code += BTN_MOUSE; break;
618                 case HID_GD_JOYSTICK:
619                                 if (code <= 0xf)
620                                         code += BTN_JOYSTICK;
621                                 else
622                                         code += BTN_TRIGGER_HAPPY - 0x10;
623                                 break;
624                 case HID_GD_GAMEPAD:
625                                 if (code <= 0xf)
626                                         code += BTN_GAMEPAD;
627                                 else
628                                         code += BTN_TRIGGER_HAPPY - 0x10;
629                                 break;
630                 default:
631                         switch (field->physical) {
632                         case HID_GD_MOUSE:
633                         case HID_GD_POINTER:  code += BTN_MOUSE; break;
634                         case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
635                         case HID_GD_GAMEPAD:  code += BTN_GAMEPAD; break;
636                         default:              code += BTN_MISC;
637                         }
638                 }
639
640                 map_key(code);
641                 break;
642
643         case HID_UP_SIMULATION:
644                 switch (usage->hid & 0xffff) {
645                 case 0xba: map_abs(ABS_RUDDER);   break;
646                 case 0xbb: map_abs(ABS_THROTTLE); break;
647                 case 0xc4: map_abs(ABS_GAS);      break;
648                 case 0xc5: map_abs(ABS_BRAKE);    break;
649                 case 0xc8: map_abs(ABS_WHEEL);    break;
650                 default:   goto ignore;
651                 }
652                 break;
653
654         case HID_UP_GENDESK:
655                 if ((usage->hid & 0xf0) == 0x80) {      /* SystemControl */
656                         switch (usage->hid & 0xf) {
657                         case 0x1: map_key_clear(KEY_POWER);  break;
658                         case 0x2: map_key_clear(KEY_SLEEP);  break;
659                         case 0x3: map_key_clear(KEY_WAKEUP); break;
660                         case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
661                         case 0x5: map_key_clear(KEY_MENU); break;
662                         case 0x6: map_key_clear(KEY_PROG1); break;
663                         case 0x7: map_key_clear(KEY_HELP); break;
664                         case 0x8: map_key_clear(KEY_EXIT); break;
665                         case 0x9: map_key_clear(KEY_SELECT); break;
666                         case 0xa: map_key_clear(KEY_RIGHT); break;
667                         case 0xb: map_key_clear(KEY_LEFT); break;
668                         case 0xc: map_key_clear(KEY_UP); break;
669                         case 0xd: map_key_clear(KEY_DOWN); break;
670                         case 0xe: map_key_clear(KEY_POWER2); break;
671                         case 0xf: map_key_clear(KEY_RESTART); break;
672                         default: goto unknown;
673                         }
674                         break;
675                 }
676
677                 /*
678                  * Some lazy vendors declare 255 usages for System Control,
679                  * leading to the creation of ABS_X|Y axis and too many others.
680                  * It wouldn't be a problem if joydev doesn't consider the
681                  * device as a joystick then.
682                  */
683                 if (field->application == HID_GD_SYSTEM_CONTROL)
684                         goto ignore;
685
686                 if ((usage->hid & 0xf0) == 0x90) {      /* D-pad */
687                         switch (usage->hid) {
688                         case HID_GD_UP:    usage->hat_dir = 1; break;
689                         case HID_GD_DOWN:  usage->hat_dir = 5; break;
690                         case HID_GD_RIGHT: usage->hat_dir = 3; break;
691                         case HID_GD_LEFT:  usage->hat_dir = 7; break;
692                         default: goto unknown;
693                         }
694                         if (field->dpad) {
695                                 map_abs(field->dpad);
696                                 goto ignore;
697                         }
698                         map_abs(ABS_HAT0X);
699                         break;
700                 }
701
702                 switch (usage->hid) {
703                 /* These usage IDs map directly to the usage codes. */
704                 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
705                 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
706                         if (field->flags & HID_MAIN_ITEM_RELATIVE)
707                                 map_rel(usage->hid & 0xf);
708                         else
709                                 map_abs_clear(usage->hid & 0xf);
710                         break;
711
712                 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
713                         if (field->flags & HID_MAIN_ITEM_RELATIVE)
714                                 map_rel(usage->hid & 0xf);
715                         else
716                                 map_abs(usage->hid & 0xf);
717                         break;
718
719                 case HID_GD_HATSWITCH:
720                         usage->hat_min = field->logical_minimum;
721                         usage->hat_max = field->logical_maximum;
722                         map_abs(ABS_HAT0X);
723                         break;
724
725                 case HID_GD_START:      map_key_clear(BTN_START);       break;
726                 case HID_GD_SELECT:     map_key_clear(BTN_SELECT);      break;
727
728                 case HID_GD_RFKILL_BTN:
729                         /* MS wireless radio ctl extension, also check CA */
730                         if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
731                                 map_key_clear(KEY_RFKILL);
732                                 /* We need to simulate the btn release */
733                                 field->flags |= HID_MAIN_ITEM_RELATIVE;
734                                 break;
735                         }
736
737                 default: goto unknown;
738                 }
739
740                 break;
741
742         case HID_UP_LED:
743                 switch (usage->hid & 0xffff) {                /* HID-Value:                   */
744                 case 0x01:  map_led (LED_NUML);     break;    /*   "Num Lock"                 */
745                 case 0x02:  map_led (LED_CAPSL);    break;    /*   "Caps Lock"                */
746                 case 0x03:  map_led (LED_SCROLLL);  break;    /*   "Scroll Lock"              */
747                 case 0x04:  map_led (LED_COMPOSE);  break;    /*   "Compose"                  */
748                 case 0x05:  map_led (LED_KANA);     break;    /*   "Kana"                     */
749                 case 0x27:  map_led (LED_SLEEP);    break;    /*   "Stand-By"                 */
750                 case 0x4c:  map_led (LED_SUSPEND);  break;    /*   "System Suspend"           */
751                 case 0x09:  map_led (LED_MUTE);     break;    /*   "Mute"                     */
752                 case 0x4b:  map_led (LED_MISC);     break;    /*   "Generic Indicator"        */
753                 case 0x19:  map_led (LED_MAIL);     break;    /*   "Message Waiting"          */
754                 case 0x4d:  map_led (LED_CHARGING); break;    /*   "External Power Connected" */
755
756                 default: goto ignore;
757                 }
758                 break;
759
760         case HID_UP_DIGITIZER:
761                 switch (usage->hid & 0xff) {
762                 case 0x00: /* Undefined */
763                         goto ignore;
764
765                 case 0x30: /* TipPressure */
766                         if (!test_bit(BTN_TOUCH, input->keybit)) {
767                                 device->quirks |= HID_QUIRK_NOTOUCH;
768                                 set_bit(EV_KEY, input->evbit);
769                                 set_bit(BTN_TOUCH, input->keybit);
770                         }
771                         map_abs_clear(ABS_PRESSURE);
772                         break;
773
774                 case 0x32: /* InRange */
775                         switch (field->physical & 0xff) {
776                         case 0x21: map_key(BTN_TOOL_MOUSE); break;
777                         case 0x22: map_key(BTN_TOOL_FINGER); break;
778                         default: map_key(BTN_TOOL_PEN); break;
779                         }
780                         break;
781
782                 case 0x3b: /* Battery Strength */
783                         hidinput_setup_battery(device, HID_INPUT_REPORT, field);
784                         usage->type = EV_PWR;
785                         goto ignore;
786
787                 case 0x3c: /* Invert */
788                         map_key_clear(BTN_TOOL_RUBBER);
789                         break;
790
791                 case 0x3d: /* X Tilt */
792                         map_abs_clear(ABS_TILT_X);
793                         break;
794
795                 case 0x3e: /* Y Tilt */
796                         map_abs_clear(ABS_TILT_Y);
797                         break;
798
799                 case 0x33: /* Touch */
800                 case 0x42: /* TipSwitch */
801                 case 0x43: /* TipSwitch2 */
802                         device->quirks &= ~HID_QUIRK_NOTOUCH;
803                         map_key_clear(BTN_TOUCH);
804                         break;
805
806                 case 0x44: /* BarrelSwitch */
807                         map_key_clear(BTN_STYLUS);
808                         break;
809
810                 case 0x45: /* ERASER */
811                         /*
812                          * This event is reported when eraser tip touches the surface.
813                          * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when
814                          * tool gets in proximity.
815                          */
816                         map_key_clear(BTN_TOUCH);
817                         break;
818
819                 case 0x46: /* TabletPick */
820                 case 0x5a: /* SecondaryBarrelSwitch */
821                         map_key_clear(BTN_STYLUS2);
822                         break;
823
824                 case 0x5b: /* TransducerSerialNumber */
825                         usage->type = EV_MSC;
826                         usage->code = MSC_SERIAL;
827                         bit = input->mscbit;
828                         max = MSC_MAX;
829                         break;
830
831                 default:  goto unknown;
832                 }
833                 break;
834
835         case HID_UP_TELEPHONY:
836                 switch (usage->hid & HID_USAGE) {
837                 case 0x2f: map_key_clear(KEY_MICMUTE);          break;
838                 case 0xb0: map_key_clear(KEY_NUMERIC_0);        break;
839                 case 0xb1: map_key_clear(KEY_NUMERIC_1);        break;
840                 case 0xb2: map_key_clear(KEY_NUMERIC_2);        break;
841                 case 0xb3: map_key_clear(KEY_NUMERIC_3);        break;
842                 case 0xb4: map_key_clear(KEY_NUMERIC_4);        break;
843                 case 0xb5: map_key_clear(KEY_NUMERIC_5);        break;
844                 case 0xb6: map_key_clear(KEY_NUMERIC_6);        break;
845                 case 0xb7: map_key_clear(KEY_NUMERIC_7);        break;
846                 case 0xb8: map_key_clear(KEY_NUMERIC_8);        break;
847                 case 0xb9: map_key_clear(KEY_NUMERIC_9);        break;
848                 case 0xba: map_key_clear(KEY_NUMERIC_STAR);     break;
849                 case 0xbb: map_key_clear(KEY_NUMERIC_POUND);    break;
850                 case 0xbc: map_key_clear(KEY_NUMERIC_A);        break;
851                 case 0xbd: map_key_clear(KEY_NUMERIC_B);        break;
852                 case 0xbe: map_key_clear(KEY_NUMERIC_C);        break;
853                 case 0xbf: map_key_clear(KEY_NUMERIC_D);        break;
854                 default: goto ignore;
855                 }
856                 break;
857
858         case HID_UP_CONSUMER:   /* USB HUT v1.12, pages 75-84 */
859                 switch (usage->hid & HID_USAGE) {
860                 case 0x000: goto ignore;
861                 case 0x030: map_key_clear(KEY_POWER);           break;
862                 case 0x031: map_key_clear(KEY_RESTART);         break;
863                 case 0x032: map_key_clear(KEY_SLEEP);           break;
864                 case 0x034: map_key_clear(KEY_SLEEP);           break;
865                 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE);  break;
866                 case 0x036: map_key_clear(BTN_MISC);            break;
867
868                 case 0x040: map_key_clear(KEY_MENU);            break; /* Menu */
869                 case 0x041: map_key_clear(KEY_SELECT);          break; /* Menu Pick */
870                 case 0x042: map_key_clear(KEY_UP);              break; /* Menu Up */
871                 case 0x043: map_key_clear(KEY_DOWN);            break; /* Menu Down */
872                 case 0x044: map_key_clear(KEY_LEFT);            break; /* Menu Left */
873                 case 0x045: map_key_clear(KEY_RIGHT);           break; /* Menu Right */
874                 case 0x046: map_key_clear(KEY_ESC);             break; /* Menu Escape */
875                 case 0x047: map_key_clear(KEY_KPPLUS);          break; /* Menu Value Increase */
876                 case 0x048: map_key_clear(KEY_KPMINUS);         break; /* Menu Value Decrease */
877
878                 case 0x060: map_key_clear(KEY_INFO);            break; /* Data On Screen */
879                 case 0x061: map_key_clear(KEY_SUBTITLE);        break; /* Closed Caption */
880                 case 0x063: map_key_clear(KEY_VCR);             break; /* VCR/TV */
881                 case 0x065: map_key_clear(KEY_CAMERA);          break; /* Snapshot */
882                 case 0x069: map_key_clear(KEY_RED);             break;
883                 case 0x06a: map_key_clear(KEY_GREEN);           break;
884                 case 0x06b: map_key_clear(KEY_BLUE);            break;
885                 case 0x06c: map_key_clear(KEY_YELLOW);          break;
886                 case 0x06d: map_key_clear(KEY_ZOOM);            break;
887
888                 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP);            break;
889                 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN);          break;
890                 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE);       break;
891                 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN);          break;
892                 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX);          break;
893                 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO);         break;
894
895                 case 0x082: map_key_clear(KEY_VIDEO_NEXT);      break;
896                 case 0x083: map_key_clear(KEY_LAST);            break;
897                 case 0x084: map_key_clear(KEY_ENTER);           break;
898                 case 0x088: map_key_clear(KEY_PC);              break;
899                 case 0x089: map_key_clear(KEY_TV);              break;
900                 case 0x08a: map_key_clear(KEY_WWW);             break;
901                 case 0x08b: map_key_clear(KEY_DVD);             break;
902                 case 0x08c: map_key_clear(KEY_PHONE);           break;
903                 case 0x08d: map_key_clear(KEY_PROGRAM);         break;
904                 case 0x08e: map_key_clear(KEY_VIDEOPHONE);      break;
905                 case 0x08f: map_key_clear(KEY_GAMES);           break;
906                 case 0x090: map_key_clear(KEY_MEMO);            break;
907                 case 0x091: map_key_clear(KEY_CD);              break;
908                 case 0x092: map_key_clear(KEY_VCR);             break;
909                 case 0x093: map_key_clear(KEY_TUNER);           break;
910                 case 0x094: map_key_clear(KEY_EXIT);            break;
911                 case 0x095: map_key_clear(KEY_HELP);            break;
912                 case 0x096: map_key_clear(KEY_TAPE);            break;
913                 case 0x097: map_key_clear(KEY_TV2);             break;
914                 case 0x098: map_key_clear(KEY_SAT);             break;
915                 case 0x09a: map_key_clear(KEY_PVR);             break;
916
917                 case 0x09c: map_key_clear(KEY_CHANNELUP);       break;
918                 case 0x09d: map_key_clear(KEY_CHANNELDOWN);     break;
919                 case 0x0a0: map_key_clear(KEY_VCR2);            break;
920
921                 case 0x0b0: map_key_clear(KEY_PLAY);            break;
922                 case 0x0b1: map_key_clear(KEY_PAUSE);           break;
923                 case 0x0b2: map_key_clear(KEY_RECORD);          break;
924                 case 0x0b3: map_key_clear(KEY_FASTFORWARD);     break;
925                 case 0x0b4: map_key_clear(KEY_REWIND);          break;
926                 case 0x0b5: map_key_clear(KEY_NEXTSONG);        break;
927                 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG);    break;
928                 case 0x0b7: map_key_clear(KEY_STOPCD);          break;
929                 case 0x0b8: map_key_clear(KEY_EJECTCD);         break;
930                 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT);    break;
931                 case 0x0b9: map_key_clear(KEY_SHUFFLE);         break;
932                 case 0x0bf: map_key_clear(KEY_SLOW);            break;
933
934                 case 0x0cd: map_key_clear(KEY_PLAYPAUSE);       break;
935                 case 0x0cf: map_key_clear(KEY_VOICECOMMAND);    break;
936                 case 0x0e0: map_abs_clear(ABS_VOLUME);          break;
937                 case 0x0e2: map_key_clear(KEY_MUTE);            break;
938                 case 0x0e5: map_key_clear(KEY_BASSBOOST);       break;
939                 case 0x0e9: map_key_clear(KEY_VOLUMEUP);        break;
940                 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN);      break;
941                 case 0x0f5: map_key_clear(KEY_SLOW);            break;
942
943                 case 0x181: map_key_clear(KEY_BUTTONCONFIG);    break;
944                 case 0x182: map_key_clear(KEY_BOOKMARKS);       break;
945                 case 0x183: map_key_clear(KEY_CONFIG);          break;
946                 case 0x184: map_key_clear(KEY_WORDPROCESSOR);   break;
947                 case 0x185: map_key_clear(KEY_EDITOR);          break;
948                 case 0x186: map_key_clear(KEY_SPREADSHEET);     break;
949                 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR);  break;
950                 case 0x188: map_key_clear(KEY_PRESENTATION);    break;
951                 case 0x189: map_key_clear(KEY_DATABASE);        break;
952                 case 0x18a: map_key_clear(KEY_MAIL);            break;
953                 case 0x18b: map_key_clear(KEY_NEWS);            break;
954                 case 0x18c: map_key_clear(KEY_VOICEMAIL);       break;
955                 case 0x18d: map_key_clear(KEY_ADDRESSBOOK);     break;
956                 case 0x18e: map_key_clear(KEY_CALENDAR);        break;
957                 case 0x18f: map_key_clear(KEY_TASKMANAGER);     break;
958                 case 0x190: map_key_clear(KEY_JOURNAL);         break;
959                 case 0x191: map_key_clear(KEY_FINANCE);         break;
960                 case 0x192: map_key_clear(KEY_CALC);            break;
961                 case 0x193: map_key_clear(KEY_PLAYER);          break;
962                 case 0x194: map_key_clear(KEY_FILE);            break;
963                 case 0x196: map_key_clear(KEY_WWW);             break;
964                 case 0x199: map_key_clear(KEY_CHAT);            break;
965                 case 0x19c: map_key_clear(KEY_LOGOFF);          break;
966                 case 0x19e: map_key_clear(KEY_COFFEE);          break;
967                 case 0x19f: map_key_clear(KEY_CONTROLPANEL);            break;
968                 case 0x1a2: map_key_clear(KEY_APPSELECT);               break;
969                 case 0x1a3: map_key_clear(KEY_NEXT);            break;
970                 case 0x1a4: map_key_clear(KEY_PREVIOUS);        break;
971                 case 0x1a6: map_key_clear(KEY_HELP);            break;
972                 case 0x1a7: map_key_clear(KEY_DOCUMENTS);       break;
973                 case 0x1ab: map_key_clear(KEY_SPELLCHECK);      break;
974                 case 0x1ae: map_key_clear(KEY_KEYBOARD);        break;
975                 case 0x1b1: map_key_clear(KEY_SCREENSAVER);             break;
976                 case 0x1b4: map_key_clear(KEY_FILE);            break;
977                 case 0x1b6: map_key_clear(KEY_IMAGES);          break;
978                 case 0x1b7: map_key_clear(KEY_AUDIO);           break;
979                 case 0x1b8: map_key_clear(KEY_VIDEO);           break;
980                 case 0x1bc: map_key_clear(KEY_MESSENGER);       break;
981                 case 0x1bd: map_key_clear(KEY_INFO);            break;
982                 case 0x201: map_key_clear(KEY_NEW);             break;
983                 case 0x202: map_key_clear(KEY_OPEN);            break;
984                 case 0x203: map_key_clear(KEY_CLOSE);           break;
985                 case 0x204: map_key_clear(KEY_EXIT);            break;
986                 case 0x207: map_key_clear(KEY_SAVE);            break;
987                 case 0x208: map_key_clear(KEY_PRINT);           break;
988                 case 0x209: map_key_clear(KEY_PROPS);           break;
989                 case 0x21a: map_key_clear(KEY_UNDO);            break;
990                 case 0x21b: map_key_clear(KEY_COPY);            break;
991                 case 0x21c: map_key_clear(KEY_CUT);             break;
992                 case 0x21d: map_key_clear(KEY_PASTE);           break;
993                 case 0x21f: map_key_clear(KEY_FIND);            break;
994                 case 0x221: map_key_clear(KEY_SEARCH);          break;
995                 case 0x222: map_key_clear(KEY_GOTO);            break;
996                 case 0x223: map_key_clear(KEY_HOMEPAGE);        break;
997                 case 0x224: map_key_clear(KEY_BACK);            break;
998                 case 0x225: map_key_clear(KEY_FORWARD);         break;
999                 case 0x226: map_key_clear(KEY_STOP);            break;
1000                 case 0x227: map_key_clear(KEY_REFRESH);         break;
1001                 case 0x22a: map_key_clear(KEY_BOOKMARKS);       break;
1002                 case 0x22d: map_key_clear(KEY_ZOOMIN);          break;
1003                 case 0x22e: map_key_clear(KEY_ZOOMOUT);         break;
1004                 case 0x22f: map_key_clear(KEY_ZOOMRESET);       break;
1005                 case 0x233: map_key_clear(KEY_SCROLLUP);        break;
1006                 case 0x234: map_key_clear(KEY_SCROLLDOWN);      break;
1007                 case 0x238: map_rel(REL_HWHEEL);                break;
1008                 case 0x23d: map_key_clear(KEY_EDIT);            break;
1009                 case 0x25f: map_key_clear(KEY_CANCEL);          break;
1010                 case 0x269: map_key_clear(KEY_INSERT);          break;
1011                 case 0x26a: map_key_clear(KEY_DELETE);          break;
1012                 case 0x279: map_key_clear(KEY_REDO);            break;
1013
1014                 case 0x289: map_key_clear(KEY_REPLY);           break;
1015                 case 0x28b: map_key_clear(KEY_FORWARDMAIL);     break;
1016                 case 0x28c: map_key_clear(KEY_SEND);            break;
1017
1018                 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV);             break;
1019                 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT);             break;
1020                 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP);                break;
1021                 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP);                break;
1022                 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT);   break;
1023                 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL);   break;
1024
1025                 default: map_key_clear(KEY_UNKNOWN);
1026                 }
1027                 break;
1028
1029         case HID_UP_GENDEVCTRLS:
1030                 switch (usage->hid) {
1031                 case HID_DC_BATTERYSTRENGTH:
1032                         hidinput_setup_battery(device, HID_INPUT_REPORT, field);
1033                         usage->type = EV_PWR;
1034                         goto ignore;
1035                 }
1036                 goto unknown;
1037
1038         case HID_UP_HPVENDOR:   /* Reported on a Dutch layout HP5308 */
1039                 set_bit(EV_REP, input->evbit);
1040                 switch (usage->hid & HID_USAGE) {
1041                 case 0x021: map_key_clear(KEY_PRINT);           break;
1042                 case 0x070: map_key_clear(KEY_HP);              break;
1043                 case 0x071: map_key_clear(KEY_CAMERA);          break;
1044                 case 0x072: map_key_clear(KEY_SOUND);           break;
1045                 case 0x073: map_key_clear(KEY_QUESTION);        break;
1046                 case 0x080: map_key_clear(KEY_EMAIL);           break;
1047                 case 0x081: map_key_clear(KEY_CHAT);            break;
1048                 case 0x082: map_key_clear(KEY_SEARCH);          break;
1049                 case 0x083: map_key_clear(KEY_CONNECT);         break;
1050                 case 0x084: map_key_clear(KEY_FINANCE);         break;
1051                 case 0x085: map_key_clear(KEY_SPORT);           break;
1052                 case 0x086: map_key_clear(KEY_SHOP);            break;
1053                 default:    goto ignore;
1054                 }
1055                 break;
1056
1057         case HID_UP_HPVENDOR2:
1058                 set_bit(EV_REP, input->evbit);
1059                 switch (usage->hid & HID_USAGE) {
1060                 case 0x001: map_key_clear(KEY_MICMUTE);         break;
1061                 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN);  break;
1062                 case 0x004: map_key_clear(KEY_BRIGHTNESSUP);    break;
1063                 default:    goto ignore;
1064                 }
1065                 break;
1066
1067         case HID_UP_MSVENDOR:
1068                 goto ignore;
1069
1070         case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
1071                 set_bit(EV_REP, input->evbit);
1072                 goto ignore;
1073
1074         case HID_UP_LOGIVENDOR:
1075                 /* intentional fallback */
1076         case HID_UP_LOGIVENDOR2:
1077                 /* intentional fallback */
1078         case HID_UP_LOGIVENDOR3:
1079                 goto ignore;
1080
1081         case HID_UP_PID:
1082                 switch (usage->hid & HID_USAGE) {
1083                 case 0xa4: map_key_clear(BTN_DEAD);     break;
1084                 default: goto ignore;
1085                 }
1086                 break;
1087
1088         default:
1089         unknown:
1090                 if (field->report_size == 1) {
1091                         if (field->report->type == HID_OUTPUT_REPORT) {
1092                                 map_led(LED_MISC);
1093                                 break;
1094                         }
1095                         map_key(BTN_MISC);
1096                         break;
1097                 }
1098                 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
1099                         map_rel(REL_MISC);
1100                         break;
1101                 }
1102                 map_abs(ABS_MISC);
1103                 break;
1104         }
1105
1106 mapped:
1107         if (device->driver->input_mapped && device->driver->input_mapped(device,
1108                                 hidinput, field, usage, &bit, &max) < 0)
1109                 goto ignore;
1110
1111         set_bit(usage->type, input->evbit);
1112
1113         /*
1114          * This part is *really* controversial:
1115          * - HID aims at being generic so we should do our best to export
1116          *   all incoming events
1117          * - HID describes what events are, so there is no reason for ABS_X
1118          *   to be mapped to ABS_Y
1119          * - HID is using *_MISC+N as a default value, but nothing prevents
1120          *   *_MISC+N to overwrite a legitimate even, which confuses userspace
1121          *   (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different
1122          *   processing)
1123          *
1124          * If devices still want to use this (at their own risk), they will
1125          * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but
1126          * the default should be a reliable mapping.
1127          */
1128         while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
1129                 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {
1130                         usage->code = find_next_zero_bit(bit,
1131                                                          max + 1,
1132                                                          usage->code);
1133                 } else {
1134                         device->status |= HID_STAT_DUP_DETECTED;
1135                         goto ignore;
1136                 }
1137         }
1138
1139         if (usage->code > max)
1140                 goto ignore;
1141
1142         if (usage->type == EV_ABS) {
1143
1144                 int a = field->logical_minimum;
1145                 int b = field->logical_maximum;
1146
1147                 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1148                         a = field->logical_minimum = 0;
1149                         b = field->logical_maximum = 255;
1150                 }
1151
1152                 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1153                         input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
1154                 else    input_set_abs_params(input, usage->code, a, b, 0, 0);
1155
1156                 input_abs_set_res(input, usage->code,
1157                                   hidinput_calc_abs_res(field, usage->code));
1158
1159                 /* use a larger default input buffer for MT devices */
1160                 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1161                         input_set_events_per_packet(input, 60);
1162         }
1163
1164         if (usage->type == EV_ABS &&
1165             (usage->hat_min < usage->hat_max || usage->hat_dir)) {
1166                 int i;
1167                 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1168                         input_set_abs_params(input, i, -1, 1, 0, 0);
1169                         set_bit(i, input->absbit);
1170                 }
1171                 if (usage->hat_dir && !field->dpad)
1172                         field->dpad = usage->code;
1173         }
1174
1175         /* for those devices which produce Consumer volume usage as relative,
1176          * we emulate pressing volumeup/volumedown appropriate number of times
1177          * in hidinput_hid_event()
1178          */
1179         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1180                         (usage->code == ABS_VOLUME)) {
1181                 set_bit(KEY_VOLUMEUP, input->keybit);
1182                 set_bit(KEY_VOLUMEDOWN, input->keybit);
1183         }
1184
1185         if (usage->type == EV_KEY) {
1186                 set_bit(EV_MSC, input->evbit);
1187                 set_bit(MSC_SCAN, input->mscbit);
1188         }
1189
1190 ignore:
1191         return;
1192
1193 }
1194
1195 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1196 {
1197         struct input_dev *input;
1198         unsigned *quirks = &hid->quirks;
1199
1200         if (!usage->type)
1201                 return;
1202
1203         if (usage->type == EV_PWR) {
1204                 hidinput_update_battery(hid, value);
1205                 return;
1206         }
1207
1208         if (!field->hidinput)
1209                 return;
1210
1211         input = field->hidinput->input;
1212
1213         if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1214                 int hat_dir = usage->hat_dir;
1215                 if (!hat_dir)
1216                         hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1217                 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1218                 input_event(input, usage->type, usage->code    , hid_hat_to_axis[hat_dir].x);
1219                 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1220                 return;
1221         }
1222
1223         if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
1224                 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
1225                 return;
1226         }
1227
1228         if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
1229                 if (value) {
1230                         input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
1231                         return;
1232                 }
1233                 input_event(input, usage->type, usage->code, 0);
1234                 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
1235                 return;
1236         }
1237
1238         if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
1239                 int a = field->logical_minimum;
1240                 int b = field->logical_maximum;
1241                 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
1242         }
1243
1244         if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
1245                 dbg_hid("Maximum Effects - %d\n",value);
1246                 return;
1247         }
1248
1249         if (usage->hid == (HID_UP_PID | 0x7fUL)) {
1250                 dbg_hid("PID Pool Report\n");
1251                 return;
1252         }
1253
1254         if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1255                 return;
1256
1257         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1258                         (usage->code == ABS_VOLUME)) {
1259                 int count = abs(value);
1260                 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1261                 int i;
1262
1263                 for (i = 0; i < count; i++) {
1264                         input_event(input, EV_KEY, direction, 1);
1265                         input_sync(input);
1266                         input_event(input, EV_KEY, direction, 0);
1267                         input_sync(input);
1268                 }
1269                 return;
1270         }
1271
1272         /*
1273          * Ignore out-of-range values as per HID specification,
1274          * section 5.10 and 6.2.25, when NULL state bit is present.
1275          * When it's not, clamp the value to match Microsoft's input
1276          * driver as mentioned in "Required HID usages for digitizers":
1277          * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
1278          *
1279          * The logical_minimum < logical_maximum check is done so that we
1280          * don't unintentionally discard values sent by devices which
1281          * don't specify logical min and max.
1282          */
1283         if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1284             (field->logical_minimum < field->logical_maximum)) {
1285                 if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
1286                     (value < field->logical_minimum ||
1287                      value > field->logical_maximum)) {
1288                         dbg_hid("Ignoring out-of-range value %x\n", value);
1289                         return;
1290                 }
1291                 value = clamp(value,
1292                               field->logical_minimum,
1293                               field->logical_maximum);
1294         }
1295
1296         /*
1297          * Ignore reports for absolute data if the data didn't change. This is
1298          * not only an optimization but also fixes 'dead' key reports. Some
1299          * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1300          * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1301          * can only have one of them physically available. The 'dead' keys
1302          * report constant 0. As all map to the same keycode, they'd confuse
1303          * the input layer. If we filter the 'dead' keys on the HID level, we
1304          * skip the keycode translation and only forward real events.
1305          */
1306         if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1307                               HID_MAIN_ITEM_BUFFERED_BYTE)) &&
1308                               (field->flags & HID_MAIN_ITEM_VARIABLE) &&
1309             usage->usage_index < field->maxusage &&
1310             value == field->value[usage->usage_index])
1311                 return;
1312
1313         /* report the usage code as scancode if the key status has changed */
1314         if (usage->type == EV_KEY &&
1315             (!test_bit(usage->code, input->key)) == value)
1316                 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1317
1318         input_event(input, usage->type, usage->code, value);
1319
1320         if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1321             usage->type == EV_KEY && value) {
1322                 input_sync(input);
1323                 input_event(input, usage->type, usage->code, 0);
1324         }
1325 }
1326
1327 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1328 {
1329         struct hid_input *hidinput;
1330
1331         if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1332                 return;
1333
1334         list_for_each_entry(hidinput, &hid->inputs, list)
1335                 input_sync(hidinput->input);
1336 }
1337 EXPORT_SYMBOL_GPL(hidinput_report_event);
1338
1339 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1340 {
1341         struct hid_report *report;
1342         int i, j;
1343
1344         list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1345                 for (i = 0; i < report->maxfield; i++) {
1346                         *field = report->field[i];
1347                         for (j = 0; j < (*field)->maxusage; j++)
1348                                 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1349                                         return j;
1350                 }
1351         }
1352         return -1;
1353 }
1354 EXPORT_SYMBOL_GPL(hidinput_find_field);
1355
1356 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1357 {
1358         struct hid_report *report;
1359         struct hid_field *field;
1360         int i, j;
1361
1362         list_for_each_entry(report,
1363                             &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1364                             list) {
1365                 for (i = 0; i < report->maxfield; i++) {
1366                         field = report->field[i];
1367                         for (j = 0; j < field->maxusage; j++)
1368                                 if (field->usage[j].type == EV_LED)
1369                                         return field;
1370                 }
1371         }
1372         return NULL;
1373 }
1374 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1375
1376 unsigned int hidinput_count_leds(struct hid_device *hid)
1377 {
1378         struct hid_report *report;
1379         struct hid_field *field;
1380         int i, j;
1381         unsigned int count = 0;
1382
1383         list_for_each_entry(report,
1384                             &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1385                             list) {
1386                 for (i = 0; i < report->maxfield; i++) {
1387                         field = report->field[i];
1388                         for (j = 0; j < field->maxusage; j++)
1389                                 if (field->usage[j].type == EV_LED &&
1390                                     field->value[j])
1391                                         count += 1;
1392                 }
1393         }
1394         return count;
1395 }
1396 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1397
1398 static void hidinput_led_worker(struct work_struct *work)
1399 {
1400         struct hid_device *hid = container_of(work, struct hid_device,
1401                                               led_work);
1402         struct hid_field *field;
1403         struct hid_report *report;
1404         int ret;
1405         u32 len;
1406         __u8 *buf;
1407
1408         field = hidinput_get_led_field(hid);
1409         if (!field)
1410                 return;
1411
1412         /*
1413          * field->report is accessed unlocked regarding HID core. So there might
1414          * be another incoming SET-LED request from user-space, which changes
1415          * the LED state while we assemble our outgoing buffer. However, this
1416          * doesn't matter as hid_output_report() correctly converts it into a
1417          * boolean value no matter what information is currently set on the LED
1418          * field (even garbage). So the remote device will always get a valid
1419          * request.
1420          * And in case we send a wrong value, a next led worker is spawned
1421          * for every SET-LED request so the following worker will send the
1422          * correct value, guaranteed!
1423          */
1424
1425         report = field->report;
1426
1427         /* use custom SET_REPORT request if possible (asynchronous) */
1428         if (hid->ll_driver->request)
1429                 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1430
1431         /* fall back to generic raw-output-report */
1432         len = hid_report_len(report);
1433         buf = hid_alloc_report_buf(report, GFP_KERNEL);
1434         if (!buf)
1435                 return;
1436
1437         hid_output_report(report, buf);
1438         /* synchronous output report */
1439         ret = hid_hw_output_report(hid, buf, len);
1440         if (ret == -ENOSYS)
1441                 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1442                                 HID_REQ_SET_REPORT);
1443         kfree(buf);
1444 }
1445
1446 static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1447                                 unsigned int code, int value)
1448 {
1449         struct hid_device *hid = input_get_drvdata(dev);
1450         struct hid_field *field;
1451         int offset;
1452
1453         if (type == EV_FF)
1454                 return input_ff_event(dev, type, code, value);
1455
1456         if (type != EV_LED)
1457                 return -1;
1458
1459         if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1460                 hid_warn(dev, "event field not found\n");
1461                 return -1;
1462         }
1463
1464         hid_set_field(field, offset, value);
1465
1466         schedule_work(&hid->led_work);
1467         return 0;
1468 }
1469
1470 static int hidinput_open(struct input_dev *dev)
1471 {
1472         struct hid_device *hid = input_get_drvdata(dev);
1473
1474         return hid_hw_open(hid);
1475 }
1476
1477 static void hidinput_close(struct input_dev *dev)
1478 {
1479         struct hid_device *hid = input_get_drvdata(dev);
1480
1481         hid_hw_close(hid);
1482 }
1483
1484 static void report_features(struct hid_device *hid)
1485 {
1486         struct hid_driver *drv = hid->driver;
1487         struct hid_report_enum *rep_enum;
1488         struct hid_report *rep;
1489         struct hid_usage *usage;
1490         int i, j;
1491
1492         rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1493         list_for_each_entry(rep, &rep_enum->report_list, list)
1494                 for (i = 0; i < rep->maxfield; i++) {
1495                         /* Ignore if report count is out of bounds. */
1496                         if (rep->field[i]->report_count < 1)
1497                                 continue;
1498
1499                         for (j = 0; j < rep->field[i]->maxusage; j++) {
1500                                 usage = &rep->field[i]->usage[j];
1501
1502                                 /* Verify if Battery Strength feature is available */
1503                                 if (usage->hid == HID_DC_BATTERYSTRENGTH)
1504                                         hidinput_setup_battery(hid, HID_FEATURE_REPORT,
1505                                                                rep->field[i]);
1506
1507                                 if (drv->feature_mapping)
1508                                         drv->feature_mapping(hid, rep->field[i], usage);
1509                         }
1510                 }
1511 }
1512
1513 static struct hid_input *hidinput_allocate(struct hid_device *hid,
1514                                            unsigned int application)
1515 {
1516         struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1517         struct input_dev *input_dev = input_allocate_device();
1518         const char *suffix = NULL;
1519
1520         if (!hidinput || !input_dev)
1521                 goto fail;
1522
1523         if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&
1524             hid->maxapplication > 1) {
1525                 switch (application) {
1526                 case HID_GD_KEYBOARD:
1527                         suffix = "Keyboard";
1528                         break;
1529                 case HID_GD_KEYPAD:
1530                         suffix = "Keypad";
1531                         break;
1532                 case HID_GD_MOUSE:
1533                         suffix = "Mouse";
1534                         break;
1535                 case HID_DG_STYLUS:
1536                         suffix = "Pen";
1537                         break;
1538                 case HID_DG_TOUCHSCREEN:
1539                         suffix = "Touchscreen";
1540                         break;
1541                 case HID_DG_TOUCHPAD:
1542                         suffix = "Touchpad";
1543                         break;
1544                 case HID_GD_SYSTEM_CONTROL:
1545                         suffix = "System Control";
1546                         break;
1547                 case HID_CP_CONSUMER_CONTROL:
1548                         suffix = "Consumer Control";
1549                         break;
1550                 case HID_GD_WIRELESS_RADIO_CTLS:
1551                         suffix = "Wireless Radio Control";
1552                         break;
1553                 default:
1554                         break;
1555                 }
1556         }
1557
1558         if (suffix) {
1559                 hidinput->name = kasprintf(GFP_KERNEL, "%s %s",
1560                                            hid->name, suffix);
1561                 if (!hidinput->name)
1562                         goto fail;
1563         }
1564
1565         input_set_drvdata(input_dev, hid);
1566         input_dev->event = hidinput_input_event;
1567         input_dev->open = hidinput_open;
1568         input_dev->close = hidinput_close;
1569         input_dev->setkeycode = hidinput_setkeycode;
1570         input_dev->getkeycode = hidinput_getkeycode;
1571
1572         input_dev->name = hidinput->name ? hidinput->name : hid->name;
1573         input_dev->phys = hid->phys;
1574         input_dev->uniq = hid->uniq;
1575         input_dev->id.bustype = hid->bus;
1576         input_dev->id.vendor  = hid->vendor;
1577         input_dev->id.product = hid->product;
1578         input_dev->id.version = hid->version;
1579         input_dev->dev.parent = &hid->dev;
1580
1581         hidinput->input = input_dev;
1582         list_add_tail(&hidinput->list, &hid->inputs);
1583
1584         INIT_LIST_HEAD(&hidinput->reports);
1585
1586         return hidinput;
1587
1588 fail:
1589         kfree(hidinput);
1590         input_free_device(input_dev);
1591         hid_err(hid, "Out of memory during hid input probe\n");
1592         return NULL;
1593 }
1594
1595 static bool hidinput_has_been_populated(struct hid_input *hidinput)
1596 {
1597         int i;
1598         unsigned long r = 0;
1599
1600         for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
1601                 r |= hidinput->input->evbit[i];
1602
1603         for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
1604                 r |= hidinput->input->keybit[i];
1605
1606         for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
1607                 r |= hidinput->input->relbit[i];
1608
1609         for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
1610                 r |= hidinput->input->absbit[i];
1611
1612         for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
1613                 r |= hidinput->input->mscbit[i];
1614
1615         for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
1616                 r |= hidinput->input->ledbit[i];
1617
1618         for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
1619                 r |= hidinput->input->sndbit[i];
1620
1621         for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
1622                 r |= hidinput->input->ffbit[i];
1623
1624         for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
1625                 r |= hidinput->input->swbit[i];
1626
1627         return !!r;
1628 }
1629
1630 static void hidinput_cleanup_hidinput(struct hid_device *hid,
1631                 struct hid_input *hidinput)
1632 {
1633         struct hid_report *report;
1634         int i, k;
1635
1636         list_del(&hidinput->list);
1637         input_free_device(hidinput->input);
1638         kfree(hidinput->name);
1639
1640         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1641                 if (k == HID_OUTPUT_REPORT &&
1642                         hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1643                         continue;
1644
1645                 list_for_each_entry(report, &hid->report_enum[k].report_list,
1646                                     list) {
1647
1648                         for (i = 0; i < report->maxfield; i++)
1649                                 if (report->field[i]->hidinput == hidinput)
1650                                         report->field[i]->hidinput = NULL;
1651                 }
1652         }
1653
1654         kfree(hidinput);
1655 }
1656
1657 static struct hid_input *hidinput_match(struct hid_report *report)
1658 {
1659         struct hid_device *hid = report->device;
1660         struct hid_input *hidinput;
1661
1662         list_for_each_entry(hidinput, &hid->inputs, list) {
1663                 if (hidinput->report &&
1664                     hidinput->report->id == report->id)
1665                         return hidinput;
1666         }
1667
1668         return NULL;
1669 }
1670
1671 static struct hid_input *hidinput_match_application(struct hid_report *report)
1672 {
1673         struct hid_device *hid = report->device;
1674         struct hid_input *hidinput;
1675
1676         list_for_each_entry(hidinput, &hid->inputs, list) {
1677                 if (hidinput->report &&
1678                     hidinput->report->application == report->application)
1679                         return hidinput;
1680         }
1681
1682         return NULL;
1683 }
1684
1685 static inline void hidinput_configure_usages(struct hid_input *hidinput,
1686                                              struct hid_report *report)
1687 {
1688         int i, j;
1689
1690         for (i = 0; i < report->maxfield; i++)
1691                 for (j = 0; j < report->field[i]->maxusage; j++)
1692                         hidinput_configure_usage(hidinput, report->field[i],
1693                                                  report->field[i]->usage + j);
1694 }
1695
1696 /*
1697  * Register the input device; print a message.
1698  * Configure the input layer interface
1699  * Read all reports and initialize the absolute field values.
1700  */
1701
1702 int hidinput_connect(struct hid_device *hid, unsigned int force)
1703 {
1704         struct hid_driver *drv = hid->driver;
1705         struct hid_report *report;
1706         struct hid_input *next, *hidinput = NULL;
1707         unsigned int application;
1708         int i, k;
1709
1710         INIT_LIST_HEAD(&hid->inputs);
1711         INIT_WORK(&hid->led_work, hidinput_led_worker);
1712
1713         hid->status &= ~HID_STAT_DUP_DETECTED;
1714
1715         if (!force) {
1716                 for (i = 0; i < hid->maxcollection; i++) {
1717                         struct hid_collection *col = &hid->collection[i];
1718                         if (col->type == HID_COLLECTION_APPLICATION ||
1719                                         col->type == HID_COLLECTION_PHYSICAL)
1720                                 if (IS_INPUT_APPLICATION(col->usage))
1721                                         break;
1722                 }
1723
1724                 if (i == hid->maxcollection)
1725                         return -1;
1726         }
1727
1728         report_features(hid);
1729
1730         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1731                 if (k == HID_OUTPUT_REPORT &&
1732                         hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1733                         continue;
1734
1735                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1736
1737                         if (!report->maxfield)
1738                                 continue;
1739
1740                         application = report->application;
1741
1742                         /*
1743                          * Find the previous hidinput report attached
1744                          * to this report id.
1745                          */
1746                         if (hid->quirks & HID_QUIRK_MULTI_INPUT)
1747                                 hidinput = hidinput_match(report);
1748                         else if (hid->maxapplication > 1 &&
1749                                  (hid->quirks & HID_QUIRK_INPUT_PER_APP))
1750                                 hidinput = hidinput_match_application(report);
1751
1752                         if (!hidinput) {
1753                                 hidinput = hidinput_allocate(hid, application);
1754                                 if (!hidinput)
1755                                         goto out_unwind;
1756                         }
1757
1758                         hidinput_configure_usages(hidinput, report);
1759
1760                         if (hid->quirks & HID_QUIRK_MULTI_INPUT)
1761                                 hidinput->report = report;
1762
1763                         list_add_tail(&report->hidinput_list,
1764                                       &hidinput->reports);
1765                 }
1766         }
1767
1768         list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1769                 if (drv->input_configured &&
1770                     drv->input_configured(hid, hidinput))
1771                         goto out_unwind;
1772
1773                 if (!hidinput_has_been_populated(hidinput)) {
1774                         /* no need to register an input device not populated */
1775                         hidinput_cleanup_hidinput(hid, hidinput);
1776                         continue;
1777                 }
1778
1779                 if (input_register_device(hidinput->input))
1780                         goto out_unwind;
1781                 hidinput->registered = true;
1782         }
1783
1784         if (list_empty(&hid->inputs)) {
1785                 hid_err(hid, "No inputs registered, leaving\n");
1786                 goto out_unwind;
1787         }
1788
1789         if (hid->status & HID_STAT_DUP_DETECTED)
1790                 hid_dbg(hid,
1791                         "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n");
1792
1793         return 0;
1794
1795 out_unwind:
1796         /* unwind the ones we already registered */
1797         hidinput_disconnect(hid);
1798
1799         return -1;
1800 }
1801 EXPORT_SYMBOL_GPL(hidinput_connect);
1802
1803 void hidinput_disconnect(struct hid_device *hid)
1804 {
1805         struct hid_input *hidinput, *next;
1806
1807         hidinput_cleanup_battery(hid);
1808
1809         list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1810                 list_del(&hidinput->list);
1811                 if (hidinput->registered)
1812                         input_unregister_device(hidinput->input);
1813                 else
1814                         input_free_device(hidinput->input);
1815                 kfree(hidinput);
1816         }
1817
1818         /* led_work is spawned by input_dev callbacks, but doesn't access the
1819          * parent input_dev at all. Once all input devices are removed, we
1820          * know that led_work will never get restarted, so we can cancel it
1821          * synchronously and are safe. */
1822         cancel_work_sync(&hid->led_work);
1823 }
1824 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1825