Merge branches 'battery-scope', 'logitech' and 'multitouch' into for-linus
[~shefty/rdma-dev.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 static __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         if (code == ABS_X || code == ABS_Y || code == ABS_Z) {
229                 if (field->unit == 0x11) {              /* If centimeters */
230                         /* Convert to millimeters */
231                         unit_exponent += 1;
232                 } else if (field->unit == 0x13) {       /* If inches */
233                         /* Convert to millimeters */
234                         prev = physical_extents;
235                         physical_extents *= 254;
236                         if (physical_extents < prev)
237                                 return 0;
238                         unit_exponent -= 1;
239                 } else {
240                         return 0;
241                 }
242         } else if (code == ABS_RX || code == ABS_RY || code == ABS_RZ) {
243                 if (field->unit == 0x14) {              /* If degrees */
244                         /* Convert to radians */
245                         prev = logical_extents;
246                         logical_extents *= 573;
247                         if (logical_extents < prev)
248                                 return 0;
249                         unit_exponent += 1;
250                 } else if (field->unit != 0x12) {       /* If not radians */
251                         return 0;
252                 }
253         } else {
254                 return 0;
255         }
256
257         /* Apply negative unit exponent */
258         for (; unit_exponent < 0; unit_exponent++) {
259                 prev = logical_extents;
260                 logical_extents *= 10;
261                 if (logical_extents < prev)
262                         return 0;
263         }
264         /* Apply positive unit exponent */
265         for (; unit_exponent > 0; unit_exponent--) {
266                 prev = physical_extents;
267                 physical_extents *= 10;
268                 if (physical_extents < prev)
269                         return 0;
270         }
271
272         /* Calculate resolution */
273         return logical_extents / physical_extents;
274 }
275
276 #ifdef CONFIG_HID_BATTERY_STRENGTH
277 static enum power_supply_property hidinput_battery_props[] = {
278         POWER_SUPPLY_PROP_PRESENT,
279         POWER_SUPPLY_PROP_ONLINE,
280         POWER_SUPPLY_PROP_CAPACITY,
281         POWER_SUPPLY_PROP_MODEL_NAME,
282         POWER_SUPPLY_PROP_STATUS,
283         POWER_SUPPLY_PROP_SCOPE,
284 };
285
286 #define HID_BATTERY_QUIRK_PERCENT       (1 << 0) /* always reports percent */
287 #define HID_BATTERY_QUIRK_FEATURE       (1 << 1) /* ask for feature report */
288
289 static const struct hid_device_id hid_battery_quirks[] = {
290         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
291                                USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
292           HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
293         {}
294 };
295
296 static unsigned find_battery_quirk(struct hid_device *hdev)
297 {
298         unsigned quirks = 0;
299         const struct hid_device_id *match;
300
301         match = hid_match_id(hdev, hid_battery_quirks);
302         if (match != NULL)
303                 quirks = match->driver_data;
304
305         return quirks;
306 }
307
308 static int hidinput_get_battery_property(struct power_supply *psy,
309                                          enum power_supply_property prop,
310                                          union power_supply_propval *val)
311 {
312         struct hid_device *dev = container_of(psy, struct hid_device, battery);
313         int ret = 0;
314         __u8 buf[2] = {};
315
316         switch (prop) {
317         case POWER_SUPPLY_PROP_PRESENT:
318         case POWER_SUPPLY_PROP_ONLINE:
319                 val->intval = 1;
320                 break;
321
322         case POWER_SUPPLY_PROP_CAPACITY:
323                 ret = dev->hid_get_raw_report(dev, dev->battery_report_id,
324                                               buf, sizeof(buf),
325                                               dev->battery_report_type);
326
327                 if (ret != 2) {
328                         if (ret >= 0)
329                                 ret = -EINVAL;
330                         break;
331                 }
332
333                 if (dev->battery_min < dev->battery_max &&
334                     buf[1] >= dev->battery_min &&
335                     buf[1] <= dev->battery_max)
336                         val->intval = (100 * (buf[1] - dev->battery_min)) /
337                                 (dev->battery_max - dev->battery_min);
338                 break;
339
340         case POWER_SUPPLY_PROP_MODEL_NAME:
341                 val->strval = dev->name;
342                 break;
343
344         case POWER_SUPPLY_PROP_STATUS:
345                 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
346                 break;
347
348         case POWER_SUPPLY_PROP_SCOPE:
349                 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
350                 break;
351
352         default:
353                 ret = -EINVAL;
354                 break;
355         }
356
357         return ret;
358 }
359
360 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
361 {
362         struct power_supply *battery = &dev->battery;
363         int ret;
364         unsigned quirks;
365         s32 min, max;
366
367         if (field->usage->hid != HID_DC_BATTERYSTRENGTH)
368                 return false;   /* no match */
369
370         if (battery->name != NULL)
371                 goto out;       /* already initialized? */
372
373         battery->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq);
374         if (battery->name == NULL)
375                 goto out;
376
377         battery->type = POWER_SUPPLY_TYPE_BATTERY;
378         battery->properties = hidinput_battery_props;
379         battery->num_properties = ARRAY_SIZE(hidinput_battery_props);
380         battery->use_for_apm = 0;
381         battery->get_property = hidinput_get_battery_property;
382
383         quirks = find_battery_quirk(dev);
384
385         hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
386                 dev->bus, dev->vendor, dev->product, dev->version, quirks);
387
388         min = field->logical_minimum;
389         max = field->logical_maximum;
390
391         if (quirks & HID_BATTERY_QUIRK_PERCENT) {
392                 min = 0;
393                 max = 100;
394         }
395
396         if (quirks & HID_BATTERY_QUIRK_FEATURE)
397                 report_type = HID_FEATURE_REPORT;
398
399         dev->battery_min = min;
400         dev->battery_max = max;
401         dev->battery_report_type = report_type;
402         dev->battery_report_id = field->report->id;
403
404         ret = power_supply_register(&dev->dev, battery);
405         if (ret != 0) {
406                 hid_warn(dev, "can't register power supply: %d\n", ret);
407                 kfree(battery->name);
408                 battery->name = NULL;
409         }
410
411         power_supply_powers(battery, &dev->dev);
412
413 out:
414         return true;
415 }
416
417 static void hidinput_cleanup_battery(struct hid_device *dev)
418 {
419         if (!dev->battery.name)
420                 return;
421
422         power_supply_unregister(&dev->battery);
423         kfree(dev->battery.name);
424         dev->battery.name = NULL;
425 }
426 #else  /* !CONFIG_HID_BATTERY_STRENGTH */
427 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
428                                    struct hid_field *field)
429 {
430         return false;
431 }
432
433 static void hidinput_cleanup_battery(struct hid_device *dev)
434 {
435 }
436 #endif  /* CONFIG_HID_BATTERY_STRENGTH */
437
438 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
439                                      struct hid_usage *usage)
440 {
441         struct input_dev *input = hidinput->input;
442         struct hid_device *device = input_get_drvdata(input);
443         int max = 0, code;
444         unsigned long *bit = NULL;
445
446         field->hidinput = hidinput;
447
448         if (field->flags & HID_MAIN_ITEM_CONSTANT)
449                 goto ignore;
450
451         /* only LED usages are supported in output fields */
452         if (field->report_type == HID_OUTPUT_REPORT &&
453                         (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
454                 goto ignore;
455         }
456
457         if (device->driver->input_mapping) {
458                 int ret = device->driver->input_mapping(device, hidinput, field,
459                                 usage, &bit, &max);
460                 if (ret > 0)
461                         goto mapped;
462                 if (ret < 0)
463                         goto ignore;
464         }
465
466         switch (usage->hid & HID_USAGE_PAGE) {
467         case HID_UP_UNDEFINED:
468                 goto ignore;
469
470         case HID_UP_KEYBOARD:
471                 set_bit(EV_REP, input->evbit);
472
473                 if ((usage->hid & HID_USAGE) < 256) {
474                         if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
475                         map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
476                 } else
477                         map_key(KEY_UNKNOWN);
478
479                 break;
480
481         case HID_UP_BUTTON:
482                 code = ((usage->hid - 1) & HID_USAGE);
483
484                 switch (field->application) {
485                 case HID_GD_MOUSE:
486                 case HID_GD_POINTER:  code += BTN_MOUSE; break;
487                 case HID_GD_JOYSTICK:
488                                 if (code <= 0xf)
489                                         code += BTN_JOYSTICK;
490                                 else
491                                         code += BTN_TRIGGER_HAPPY;
492                                 break;
493                 case HID_GD_GAMEPAD:  code += BTN_GAMEPAD; break;
494                 default:
495                         switch (field->physical) {
496                         case HID_GD_MOUSE:
497                         case HID_GD_POINTER:  code += BTN_MOUSE; break;
498                         case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
499                         case HID_GD_GAMEPAD:  code += BTN_GAMEPAD; break;
500                         default:              code += BTN_MISC;
501                         }
502                 }
503
504                 map_key(code);
505                 break;
506
507         case HID_UP_SIMULATION:
508                 switch (usage->hid & 0xffff) {
509                 case 0xba: map_abs(ABS_RUDDER);   break;
510                 case 0xbb: map_abs(ABS_THROTTLE); break;
511                 case 0xc4: map_abs(ABS_GAS);      break;
512                 case 0xc5: map_abs(ABS_BRAKE);    break;
513                 case 0xc8: map_abs(ABS_WHEEL);    break;
514                 default:   goto ignore;
515                 }
516                 break;
517
518         case HID_UP_GENDESK:
519                 if ((usage->hid & 0xf0) == 0x80) {      /* SystemControl */
520                         switch (usage->hid & 0xf) {
521                         case 0x1: map_key_clear(KEY_POWER);  break;
522                         case 0x2: map_key_clear(KEY_SLEEP);  break;
523                         case 0x3: map_key_clear(KEY_WAKEUP); break;
524                         case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
525                         case 0x5: map_key_clear(KEY_MENU); break;
526                         case 0x6: map_key_clear(KEY_PROG1); break;
527                         case 0x7: map_key_clear(KEY_HELP); break;
528                         case 0x8: map_key_clear(KEY_EXIT); break;
529                         case 0x9: map_key_clear(KEY_SELECT); break;
530                         case 0xa: map_key_clear(KEY_RIGHT); break;
531                         case 0xb: map_key_clear(KEY_LEFT); break;
532                         case 0xc: map_key_clear(KEY_UP); break;
533                         case 0xd: map_key_clear(KEY_DOWN); break;
534                         case 0xe: map_key_clear(KEY_POWER2); break;
535                         case 0xf: map_key_clear(KEY_RESTART); break;
536                         default: goto unknown;
537                         }
538                         break;
539                 }
540
541                 if ((usage->hid & 0xf0) == 0x90) {      /* D-pad */
542                         switch (usage->hid) {
543                         case HID_GD_UP:    usage->hat_dir = 1; break;
544                         case HID_GD_DOWN:  usage->hat_dir = 5; break;
545                         case HID_GD_RIGHT: usage->hat_dir = 3; break;
546                         case HID_GD_LEFT:  usage->hat_dir = 7; break;
547                         default: goto unknown;
548                         }
549                         if (field->dpad) {
550                                 map_abs(field->dpad);
551                                 goto ignore;
552                         }
553                         map_abs(ABS_HAT0X);
554                         break;
555                 }
556
557                 switch (usage->hid) {
558                 /* These usage IDs map directly to the usage codes. */
559                 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
560                 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
561                 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
562                         if (field->flags & HID_MAIN_ITEM_RELATIVE)
563                                 map_rel(usage->hid & 0xf);
564                         else
565                                 map_abs(usage->hid & 0xf);
566                         break;
567
568                 case HID_GD_HATSWITCH:
569                         usage->hat_min = field->logical_minimum;
570                         usage->hat_max = field->logical_maximum;
571                         map_abs(ABS_HAT0X);
572                         break;
573
574                 case HID_GD_START:      map_key_clear(BTN_START);       break;
575                 case HID_GD_SELECT:     map_key_clear(BTN_SELECT);      break;
576
577                 default: goto unknown;
578                 }
579
580                 break;
581
582         case HID_UP_LED:
583                 switch (usage->hid & 0xffff) {                /* HID-Value:                   */
584                 case 0x01:  map_led (LED_NUML);     break;    /*   "Num Lock"                 */
585                 case 0x02:  map_led (LED_CAPSL);    break;    /*   "Caps Lock"                */
586                 case 0x03:  map_led (LED_SCROLLL);  break;    /*   "Scroll Lock"              */
587                 case 0x04:  map_led (LED_COMPOSE);  break;    /*   "Compose"                  */
588                 case 0x05:  map_led (LED_KANA);     break;    /*   "Kana"                     */
589                 case 0x27:  map_led (LED_SLEEP);    break;    /*   "Stand-By"                 */
590                 case 0x4c:  map_led (LED_SUSPEND);  break;    /*   "System Suspend"           */
591                 case 0x09:  map_led (LED_MUTE);     break;    /*   "Mute"                     */
592                 case 0x4b:  map_led (LED_MISC);     break;    /*   "Generic Indicator"        */
593                 case 0x19:  map_led (LED_MAIL);     break;    /*   "Message Waiting"          */
594                 case 0x4d:  map_led (LED_CHARGING); break;    /*   "External Power Connected" */
595
596                 default: goto ignore;
597                 }
598                 break;
599
600         case HID_UP_DIGITIZER:
601                 switch (usage->hid & 0xff) {
602                 case 0x00: /* Undefined */
603                         goto ignore;
604
605                 case 0x30: /* TipPressure */
606                         if (!test_bit(BTN_TOUCH, input->keybit)) {
607                                 device->quirks |= HID_QUIRK_NOTOUCH;
608                                 set_bit(EV_KEY, input->evbit);
609                                 set_bit(BTN_TOUCH, input->keybit);
610                         }
611                         map_abs_clear(ABS_PRESSURE);
612                         break;
613
614                 case 0x32: /* InRange */
615                         switch (field->physical & 0xff) {
616                         case 0x21: map_key(BTN_TOOL_MOUSE); break;
617                         case 0x22: map_key(BTN_TOOL_FINGER); break;
618                         default: map_key(BTN_TOOL_PEN); break;
619                         }
620                         break;
621
622                 case 0x3c: /* Invert */
623                         map_key_clear(BTN_TOOL_RUBBER);
624                         break;
625
626                 case 0x33: /* Touch */
627                 case 0x42: /* TipSwitch */
628                 case 0x43: /* TipSwitch2 */
629                         device->quirks &= ~HID_QUIRK_NOTOUCH;
630                         map_key_clear(BTN_TOUCH);
631                         break;
632
633                 case 0x44: /* BarrelSwitch */
634                         map_key_clear(BTN_STYLUS);
635                         break;
636
637                 case 0x46: /* TabletPick */
638                         map_key_clear(BTN_STYLUS2);
639                         break;
640
641                 case 0x51: /* ContactID */
642                         device->quirks |= HID_QUIRK_MULTITOUCH;
643                         goto unknown;
644
645                 default:  goto unknown;
646                 }
647                 break;
648
649         case HID_UP_CONSUMER:   /* USB HUT v1.12, pages 75-84 */
650                 switch (usage->hid & HID_USAGE) {
651                 case 0x000: goto ignore;
652                 case 0x030: map_key_clear(KEY_POWER);           break;
653                 case 0x031: map_key_clear(KEY_RESTART);         break;
654                 case 0x032: map_key_clear(KEY_SLEEP);           break;
655                 case 0x034: map_key_clear(KEY_SLEEP);           break;
656                 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE);  break;
657                 case 0x036: map_key_clear(BTN_MISC);            break;
658
659                 case 0x040: map_key_clear(KEY_MENU);            break; /* Menu */
660                 case 0x041: map_key_clear(KEY_SELECT);          break; /* Menu Pick */
661                 case 0x042: map_key_clear(KEY_UP);              break; /* Menu Up */
662                 case 0x043: map_key_clear(KEY_DOWN);            break; /* Menu Down */
663                 case 0x044: map_key_clear(KEY_LEFT);            break; /* Menu Left */
664                 case 0x045: map_key_clear(KEY_RIGHT);           break; /* Menu Right */
665                 case 0x046: map_key_clear(KEY_ESC);             break; /* Menu Escape */
666                 case 0x047: map_key_clear(KEY_KPPLUS);          break; /* Menu Value Increase */
667                 case 0x048: map_key_clear(KEY_KPMINUS);         break; /* Menu Value Decrease */
668
669                 case 0x060: map_key_clear(KEY_INFO);            break; /* Data On Screen */
670                 case 0x061: map_key_clear(KEY_SUBTITLE);        break; /* Closed Caption */
671                 case 0x063: map_key_clear(KEY_VCR);             break; /* VCR/TV */
672                 case 0x065: map_key_clear(KEY_CAMERA);          break; /* Snapshot */
673                 case 0x069: map_key_clear(KEY_RED);             break;
674                 case 0x06a: map_key_clear(KEY_GREEN);           break;
675                 case 0x06b: map_key_clear(KEY_BLUE);            break;
676                 case 0x06c: map_key_clear(KEY_YELLOW);          break;
677                 case 0x06d: map_key_clear(KEY_ZOOM);            break;
678
679                 case 0x082: map_key_clear(KEY_VIDEO_NEXT);      break;
680                 case 0x083: map_key_clear(KEY_LAST);            break;
681                 case 0x084: map_key_clear(KEY_ENTER);           break;
682                 case 0x088: map_key_clear(KEY_PC);              break;
683                 case 0x089: map_key_clear(KEY_TV);              break;
684                 case 0x08a: map_key_clear(KEY_WWW);             break;
685                 case 0x08b: map_key_clear(KEY_DVD);             break;
686                 case 0x08c: map_key_clear(KEY_PHONE);           break;
687                 case 0x08d: map_key_clear(KEY_PROGRAM);         break;
688                 case 0x08e: map_key_clear(KEY_VIDEOPHONE);      break;
689                 case 0x08f: map_key_clear(KEY_GAMES);           break;
690                 case 0x090: map_key_clear(KEY_MEMO);            break;
691                 case 0x091: map_key_clear(KEY_CD);              break;
692                 case 0x092: map_key_clear(KEY_VCR);             break;
693                 case 0x093: map_key_clear(KEY_TUNER);           break;
694                 case 0x094: map_key_clear(KEY_EXIT);            break;
695                 case 0x095: map_key_clear(KEY_HELP);            break;
696                 case 0x096: map_key_clear(KEY_TAPE);            break;
697                 case 0x097: map_key_clear(KEY_TV2);             break;
698                 case 0x098: map_key_clear(KEY_SAT);             break;
699                 case 0x09a: map_key_clear(KEY_PVR);             break;
700
701                 case 0x09c: map_key_clear(KEY_CHANNELUP);       break;
702                 case 0x09d: map_key_clear(KEY_CHANNELDOWN);     break;
703                 case 0x0a0: map_key_clear(KEY_VCR2);            break;
704
705                 case 0x0b0: map_key_clear(KEY_PLAY);            break;
706                 case 0x0b1: map_key_clear(KEY_PAUSE);           break;
707                 case 0x0b2: map_key_clear(KEY_RECORD);          break;
708                 case 0x0b3: map_key_clear(KEY_FASTFORWARD);     break;
709                 case 0x0b4: map_key_clear(KEY_REWIND);          break;
710                 case 0x0b5: map_key_clear(KEY_NEXTSONG);        break;
711                 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG);    break;
712                 case 0x0b7: map_key_clear(KEY_STOPCD);          break;
713                 case 0x0b8: map_key_clear(KEY_EJECTCD);         break;
714                 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT);    break;
715                 case 0x0b9: map_key_clear(KEY_SHUFFLE);         break;
716                 case 0x0bf: map_key_clear(KEY_SLOW);            break;
717
718                 case 0x0cd: map_key_clear(KEY_PLAYPAUSE);       break;
719                 case 0x0e0: map_abs_clear(ABS_VOLUME);          break;
720                 case 0x0e2: map_key_clear(KEY_MUTE);            break;
721                 case 0x0e5: map_key_clear(KEY_BASSBOOST);       break;
722                 case 0x0e9: map_key_clear(KEY_VOLUMEUP);        break;
723                 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN);      break;
724                 case 0x0f5: map_key_clear(KEY_SLOW);            break;
725
726                 case 0x182: map_key_clear(KEY_BOOKMARKS);       break;
727                 case 0x183: map_key_clear(KEY_CONFIG);          break;
728                 case 0x184: map_key_clear(KEY_WORDPROCESSOR);   break;
729                 case 0x185: map_key_clear(KEY_EDITOR);          break;
730                 case 0x186: map_key_clear(KEY_SPREADSHEET);     break;
731                 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR);  break;
732                 case 0x188: map_key_clear(KEY_PRESENTATION);    break;
733                 case 0x189: map_key_clear(KEY_DATABASE);        break;
734                 case 0x18a: map_key_clear(KEY_MAIL);            break;
735                 case 0x18b: map_key_clear(KEY_NEWS);            break;
736                 case 0x18c: map_key_clear(KEY_VOICEMAIL);       break;
737                 case 0x18d: map_key_clear(KEY_ADDRESSBOOK);     break;
738                 case 0x18e: map_key_clear(KEY_CALENDAR);        break;
739                 case 0x191: map_key_clear(KEY_FINANCE);         break;
740                 case 0x192: map_key_clear(KEY_CALC);            break;
741                 case 0x193: map_key_clear(KEY_PLAYER);          break;
742                 case 0x194: map_key_clear(KEY_FILE);            break;
743                 case 0x196: map_key_clear(KEY_WWW);             break;
744                 case 0x199: map_key_clear(KEY_CHAT);            break;
745                 case 0x19c: map_key_clear(KEY_LOGOFF);          break;
746                 case 0x19e: map_key_clear(KEY_COFFEE);          break;
747                 case 0x1a6: map_key_clear(KEY_HELP);            break;
748                 case 0x1a7: map_key_clear(KEY_DOCUMENTS);       break;
749                 case 0x1ab: map_key_clear(KEY_SPELLCHECK);      break;
750                 case 0x1ae: map_key_clear(KEY_KEYBOARD);        break;
751                 case 0x1b6: map_key_clear(KEY_IMAGES);          break;
752                 case 0x1b7: map_key_clear(KEY_AUDIO);           break;
753                 case 0x1b8: map_key_clear(KEY_VIDEO);           break;
754                 case 0x1bc: map_key_clear(KEY_MESSENGER);       break;
755                 case 0x1bd: map_key_clear(KEY_INFO);            break;
756                 case 0x201: map_key_clear(KEY_NEW);             break;
757                 case 0x202: map_key_clear(KEY_OPEN);            break;
758                 case 0x203: map_key_clear(KEY_CLOSE);           break;
759                 case 0x204: map_key_clear(KEY_EXIT);            break;
760                 case 0x207: map_key_clear(KEY_SAVE);            break;
761                 case 0x208: map_key_clear(KEY_PRINT);           break;
762                 case 0x209: map_key_clear(KEY_PROPS);           break;
763                 case 0x21a: map_key_clear(KEY_UNDO);            break;
764                 case 0x21b: map_key_clear(KEY_COPY);            break;
765                 case 0x21c: map_key_clear(KEY_CUT);             break;
766                 case 0x21d: map_key_clear(KEY_PASTE);           break;
767                 case 0x21f: map_key_clear(KEY_FIND);            break;
768                 case 0x221: map_key_clear(KEY_SEARCH);          break;
769                 case 0x222: map_key_clear(KEY_GOTO);            break;
770                 case 0x223: map_key_clear(KEY_HOMEPAGE);        break;
771                 case 0x224: map_key_clear(KEY_BACK);            break;
772                 case 0x225: map_key_clear(KEY_FORWARD);         break;
773                 case 0x226: map_key_clear(KEY_STOP);            break;
774                 case 0x227: map_key_clear(KEY_REFRESH);         break;
775                 case 0x22a: map_key_clear(KEY_BOOKMARKS);       break;
776                 case 0x22d: map_key_clear(KEY_ZOOMIN);          break;
777                 case 0x22e: map_key_clear(KEY_ZOOMOUT);         break;
778                 case 0x22f: map_key_clear(KEY_ZOOMRESET);       break;
779                 case 0x233: map_key_clear(KEY_SCROLLUP);        break;
780                 case 0x234: map_key_clear(KEY_SCROLLDOWN);      break;
781                 case 0x238: map_rel(REL_HWHEEL);                break;
782                 case 0x23d: map_key_clear(KEY_EDIT);            break;
783                 case 0x25f: map_key_clear(KEY_CANCEL);          break;
784                 case 0x269: map_key_clear(KEY_INSERT);          break;
785                 case 0x26a: map_key_clear(KEY_DELETE);          break;
786                 case 0x279: map_key_clear(KEY_REDO);            break;
787
788                 case 0x289: map_key_clear(KEY_REPLY);           break;
789                 case 0x28b: map_key_clear(KEY_FORWARDMAIL);     break;
790                 case 0x28c: map_key_clear(KEY_SEND);            break;
791
792                 default:    goto ignore;
793                 }
794                 break;
795
796         case HID_UP_GENDEVCTRLS:
797                 if (hidinput_setup_battery(device, HID_INPUT_REPORT, field))
798                         goto ignore;
799                 else
800                         goto unknown;
801                 break;
802
803         case HID_UP_HPVENDOR:   /* Reported on a Dutch layout HP5308 */
804                 set_bit(EV_REP, input->evbit);
805                 switch (usage->hid & HID_USAGE) {
806                 case 0x021: map_key_clear(KEY_PRINT);           break;
807                 case 0x070: map_key_clear(KEY_HP);              break;
808                 case 0x071: map_key_clear(KEY_CAMERA);          break;
809                 case 0x072: map_key_clear(KEY_SOUND);           break;
810                 case 0x073: map_key_clear(KEY_QUESTION);        break;
811                 case 0x080: map_key_clear(KEY_EMAIL);           break;
812                 case 0x081: map_key_clear(KEY_CHAT);            break;
813                 case 0x082: map_key_clear(KEY_SEARCH);          break;
814                 case 0x083: map_key_clear(KEY_CONNECT);         break;
815                 case 0x084: map_key_clear(KEY_FINANCE);         break;
816                 case 0x085: map_key_clear(KEY_SPORT);           break;
817                 case 0x086: map_key_clear(KEY_SHOP);            break;
818                 default:    goto ignore;
819                 }
820                 break;
821
822         case HID_UP_MSVENDOR:
823                 goto ignore;
824
825         case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
826                 set_bit(EV_REP, input->evbit);
827                 goto ignore;
828
829         case HID_UP_LOGIVENDOR:
830                 goto ignore;
831
832         case HID_UP_PID:
833                 switch (usage->hid & HID_USAGE) {
834                 case 0xa4: map_key_clear(BTN_DEAD);     break;
835                 default: goto ignore;
836                 }
837                 break;
838
839         default:
840         unknown:
841                 if (field->report_size == 1) {
842                         if (field->report->type == HID_OUTPUT_REPORT) {
843                                 map_led(LED_MISC);
844                                 break;
845                         }
846                         map_key(BTN_MISC);
847                         break;
848                 }
849                 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
850                         map_rel(REL_MISC);
851                         break;
852                 }
853                 map_abs(ABS_MISC);
854                 break;
855         }
856
857 mapped:
858         if (device->driver->input_mapped && device->driver->input_mapped(device,
859                                 hidinput, field, usage, &bit, &max) < 0)
860                 goto ignore;
861
862         set_bit(usage->type, input->evbit);
863
864         while (usage->code <= max && test_and_set_bit(usage->code, bit))
865                 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
866
867         if (usage->code > max)
868                 goto ignore;
869
870
871         if (usage->type == EV_ABS) {
872
873                 int a = field->logical_minimum;
874                 int b = field->logical_maximum;
875
876                 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
877                         a = field->logical_minimum = 0;
878                         b = field->logical_maximum = 255;
879                 }
880
881                 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
882                         input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
883                 else    input_set_abs_params(input, usage->code, a, b, 0, 0);
884
885                 input_abs_set_res(input, usage->code,
886                                   hidinput_calc_abs_res(field, usage->code));
887
888                 /* use a larger default input buffer for MT devices */
889                 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
890                         input_set_events_per_packet(input, 60);
891         }
892
893         if (usage->type == EV_ABS &&
894             (usage->hat_min < usage->hat_max || usage->hat_dir)) {
895                 int i;
896                 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
897                         input_set_abs_params(input, i, -1, 1, 0, 0);
898                         set_bit(i, input->absbit);
899                 }
900                 if (usage->hat_dir && !field->dpad)
901                         field->dpad = usage->code;
902         }
903
904         /* for those devices which produce Consumer volume usage as relative,
905          * we emulate pressing volumeup/volumedown appropriate number of times
906          * in hidinput_hid_event()
907          */
908         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
909                         (usage->code == ABS_VOLUME)) {
910                 set_bit(KEY_VOLUMEUP, input->keybit);
911                 set_bit(KEY_VOLUMEDOWN, input->keybit);
912         }
913
914         if (usage->type == EV_KEY) {
915                 set_bit(EV_MSC, input->evbit);
916                 set_bit(MSC_SCAN, input->mscbit);
917         }
918
919 ignore:
920         return;
921
922 }
923
924 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
925 {
926         struct input_dev *input;
927         unsigned *quirks = &hid->quirks;
928
929         if (!field->hidinput)
930                 return;
931
932         input = field->hidinput->input;
933
934         if (!usage->type)
935                 return;
936
937         if (usage->hat_min < usage->hat_max || usage->hat_dir) {
938                 int hat_dir = usage->hat_dir;
939                 if (!hat_dir)
940                         hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
941                 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
942                 input_event(input, usage->type, usage->code    , hid_hat_to_axis[hat_dir].x);
943                 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
944                 return;
945         }
946
947         if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
948                 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
949                 return;
950         }
951
952         if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
953                 if (value) {
954                         input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
955                         return;
956                 }
957                 input_event(input, usage->type, usage->code, 0);
958                 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
959                 return;
960         }
961
962         if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
963                 int a = field->logical_minimum;
964                 int b = field->logical_maximum;
965                 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
966         }
967
968         if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
969                 dbg_hid("Maximum Effects - %d\n",value);
970                 return;
971         }
972
973         if (usage->hid == (HID_UP_PID | 0x7fUL)) {
974                 dbg_hid("PID Pool Report\n");
975                 return;
976         }
977
978         if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
979                 return;
980
981         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
982                         (usage->code == ABS_VOLUME)) {
983                 int count = abs(value);
984                 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
985                 int i;
986
987                 for (i = 0; i < count; i++) {
988                         input_event(input, EV_KEY, direction, 1);
989                         input_sync(input);
990                         input_event(input, EV_KEY, direction, 0);
991                         input_sync(input);
992                 }
993                 return;
994         }
995
996         /*
997          * Ignore out-of-range values as per HID specification,
998          * section 5.10 and 6.2.25
999          */
1000         if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1001             (value < field->logical_minimum ||
1002              value > field->logical_maximum)) {
1003                 dbg_hid("Ignoring out-of-range value %x\n", value);
1004                 return;
1005         }
1006
1007         /* report the usage code as scancode if the key status has changed */
1008         if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
1009                 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1010
1011         input_event(input, usage->type, usage->code, value);
1012
1013         if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
1014                 input_event(input, usage->type, usage->code, 0);
1015 }
1016
1017 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1018 {
1019         struct hid_input *hidinput;
1020
1021         if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1022                 return;
1023
1024         list_for_each_entry(hidinput, &hid->inputs, list)
1025                 input_sync(hidinput->input);
1026 }
1027 EXPORT_SYMBOL_GPL(hidinput_report_event);
1028
1029 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1030 {
1031         struct hid_report *report;
1032         int i, j;
1033
1034         list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1035                 for (i = 0; i < report->maxfield; i++) {
1036                         *field = report->field[i];
1037                         for (j = 0; j < (*field)->maxusage; j++)
1038                                 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1039                                         return j;
1040                 }
1041         }
1042         return -1;
1043 }
1044 EXPORT_SYMBOL_GPL(hidinput_find_field);
1045
1046 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1047 {
1048         struct hid_report *report;
1049         struct hid_field *field;
1050         int i, j;
1051
1052         list_for_each_entry(report,
1053                             &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1054                             list) {
1055                 for (i = 0; i < report->maxfield; i++) {
1056                         field = report->field[i];
1057                         for (j = 0; j < field->maxusage; j++)
1058                                 if (field->usage[j].type == EV_LED)
1059                                         return field;
1060                 }
1061         }
1062         return NULL;
1063 }
1064 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1065
1066 unsigned int hidinput_count_leds(struct hid_device *hid)
1067 {
1068         struct hid_report *report;
1069         struct hid_field *field;
1070         int i, j;
1071         unsigned int count = 0;
1072
1073         list_for_each_entry(report,
1074                             &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1075                             list) {
1076                 for (i = 0; i < report->maxfield; i++) {
1077                         field = report->field[i];
1078                         for (j = 0; j < field->maxusage; j++)
1079                                 if (field->usage[j].type == EV_LED &&
1080                                     field->value[j])
1081                                         count += 1;
1082                 }
1083         }
1084         return count;
1085 }
1086 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1087
1088 static int hidinput_open(struct input_dev *dev)
1089 {
1090         struct hid_device *hid = input_get_drvdata(dev);
1091
1092         return hid_hw_open(hid);
1093 }
1094
1095 static void hidinput_close(struct input_dev *dev)
1096 {
1097         struct hid_device *hid = input_get_drvdata(dev);
1098
1099         hid_hw_close(hid);
1100 }
1101
1102 static void report_features(struct hid_device *hid)
1103 {
1104         struct hid_driver *drv = hid->driver;
1105         struct hid_report_enum *rep_enum;
1106         struct hid_report *rep;
1107         int i, j;
1108
1109         rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1110         list_for_each_entry(rep, &rep_enum->report_list, list)
1111                 for (i = 0; i < rep->maxfield; i++)
1112                         for (j = 0; j < rep->field[i]->maxusage; j++) {
1113                                 /* Verify if Battery Strength feature is available */
1114                                 hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);
1115
1116                                 if (drv->feature_mapping)
1117                                         drv->feature_mapping(hid, rep->field[i],
1118                                                              rep->field[i]->usage + j);
1119                         }
1120 }
1121
1122 /*
1123  * Register the input device; print a message.
1124  * Configure the input layer interface
1125  * Read all reports and initialize the absolute field values.
1126  */
1127
1128 int hidinput_connect(struct hid_device *hid, unsigned int force)
1129 {
1130         struct hid_report *report;
1131         struct hid_input *hidinput = NULL;
1132         struct input_dev *input_dev;
1133         int i, j, k;
1134
1135         INIT_LIST_HEAD(&hid->inputs);
1136
1137         if (!force) {
1138                 for (i = 0; i < hid->maxcollection; i++) {
1139                         struct hid_collection *col = &hid->collection[i];
1140                         if (col->type == HID_COLLECTION_APPLICATION ||
1141                                         col->type == HID_COLLECTION_PHYSICAL)
1142                                 if (IS_INPUT_APPLICATION(col->usage))
1143                                         break;
1144                 }
1145
1146                 if (i == hid->maxcollection)
1147                         return -1;
1148         }
1149
1150         report_features(hid);
1151
1152         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1153                 if (k == HID_OUTPUT_REPORT &&
1154                         hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1155                         continue;
1156
1157                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1158
1159                         if (!report->maxfield)
1160                                 continue;
1161
1162                         if (!hidinput) {
1163                                 hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1164                                 input_dev = input_allocate_device();
1165                                 if (!hidinput || !input_dev) {
1166                                         kfree(hidinput);
1167                                         input_free_device(input_dev);
1168                                         hid_err(hid, "Out of memory during hid input probe\n");
1169                                         goto out_unwind;
1170                                 }
1171
1172                                 input_set_drvdata(input_dev, hid);
1173                                 input_dev->event =
1174                                         hid->ll_driver->hidinput_input_event;
1175                                 input_dev->open = hidinput_open;
1176                                 input_dev->close = hidinput_close;
1177                                 input_dev->setkeycode = hidinput_setkeycode;
1178                                 input_dev->getkeycode = hidinput_getkeycode;
1179
1180                                 input_dev->name = hid->name;
1181                                 input_dev->phys = hid->phys;
1182                                 input_dev->uniq = hid->uniq;
1183                                 input_dev->id.bustype = hid->bus;
1184                                 input_dev->id.vendor  = hid->vendor;
1185                                 input_dev->id.product = hid->product;
1186                                 input_dev->id.version = hid->version;
1187                                 input_dev->dev.parent = hid->dev.parent;
1188                                 hidinput->input = input_dev;
1189                                 list_add_tail(&hidinput->list, &hid->inputs);
1190                         }
1191
1192                         for (i = 0; i < report->maxfield; i++)
1193                                 for (j = 0; j < report->field[i]->maxusage; j++)
1194                                         hidinput_configure_usage(hidinput, report->field[i],
1195                                                                  report->field[i]->usage + j);
1196
1197                         if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
1198                                 /* This will leave hidinput NULL, so that it
1199                                  * allocates another one if we have more inputs on
1200                                  * the same interface. Some devices (e.g. Happ's
1201                                  * UGCI) cram a lot of unrelated inputs into the
1202                                  * same interface. */
1203                                 hidinput->report = report;
1204                                 if (input_register_device(hidinput->input))
1205                                         goto out_cleanup;
1206                                 hidinput = NULL;
1207                         }
1208                 }
1209         }
1210
1211         if (hid->quirks & HID_QUIRK_MULTITOUCH) {
1212                 /* generic hid does not know how to handle multitouch devices */
1213                 if (hidinput)
1214                         goto out_cleanup;
1215                 goto out_unwind;
1216         }
1217
1218         if (hidinput && input_register_device(hidinput->input))
1219                 goto out_cleanup;
1220
1221         return 0;
1222
1223 out_cleanup:
1224         list_del(&hidinput->list);
1225         input_free_device(hidinput->input);
1226         kfree(hidinput);
1227 out_unwind:
1228         /* unwind the ones we already registered */
1229         hidinput_disconnect(hid);
1230
1231         return -1;
1232 }
1233 EXPORT_SYMBOL_GPL(hidinput_connect);
1234
1235 void hidinput_disconnect(struct hid_device *hid)
1236 {
1237         struct hid_input *hidinput, *next;
1238
1239         hidinput_cleanup_battery(hid);
1240
1241         list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1242                 list_del(&hidinput->list);
1243                 input_unregister_device(hidinput->input);
1244                 kfree(hidinput);
1245         }
1246 }
1247 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1248