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