Input: snvs_pwrkey - initialize necessary driver data before enabling IRQ
[sfrench/cifs-2.6.git] / drivers / hid / hid-input.c
1 /*
2  *  Copyright (c) 2000-2001 Vojtech Pavlik
3  *  Copyright (c) 2006-2010 Jiri Kosina
4  *
5  *  HID to Linux Input mapping
6  */
7
8 /*
9  * This program is free software; you can redistribute it and/or modify
10  * it under the terms of the GNU General Public License as published by
11  * the Free Software Foundation; either version 2 of the License, or
12  * (at your option) any later version.
13  *
14  * This program is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
17  * GNU General Public License for more details.
18  *
19  * You should have received a copy of the GNU General Public License
20  * along with this program; if not, write to the Free Software
21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22  *
23  * Should you need to contact me, the author, you can do so either by
24  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
25  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
26  */
27
28 #include <linux/module.h>
29 #include <linux/slab.h>
30 #include <linux/kernel.h>
31
32 #include <linux/hid.h>
33 #include <linux/hid-debug.h>
34
35 #include "hid-ids.h"
36
37 #define unk     KEY_UNKNOWN
38
39 static const unsigned char hid_keyboard[256] = {
40           0,  0,  0,  0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
41          50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44,  2,  3,
42           4,  5,  6,  7,  8,  9, 10, 11, 28,  1, 14, 15, 57, 12, 13, 26,
43          27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
44          65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
45         105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
46          72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
47         191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
48         115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
49         122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,
50         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
51         unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk,
52         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
53         unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk,
54          29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
55         150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
56 };
57
58 static const struct {
59         __s32 x;
60         __s32 y;
61 }  hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
62
63 #define map_abs(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
64 #define map_rel(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
65 #define map_key(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
66 #define map_led(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
67
68 #define map_abs_clear(c)        hid_map_usage_clear(hidinput, usage, &bit, \
69                 &max, EV_ABS, (c))
70 #define map_key_clear(c)        hid_map_usage_clear(hidinput, usage, &bit, \
71                 &max, EV_KEY, (c))
72
73 static bool match_scancode(struct hid_usage *usage,
74                            unsigned int cur_idx, unsigned int scancode)
75 {
76         return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
77 }
78
79 static bool match_keycode(struct hid_usage *usage,
80                           unsigned int cur_idx, unsigned int keycode)
81 {
82         /*
83          * We should exclude unmapped usages when doing lookup by keycode.
84          */
85         return (usage->type == EV_KEY && usage->code == keycode);
86 }
87
88 static bool match_index(struct hid_usage *usage,
89                         unsigned int cur_idx, unsigned int idx)
90 {
91         return cur_idx == idx;
92 }
93
94 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
95                                 unsigned int cur_idx, unsigned int val);
96
97 static struct hid_usage *hidinput_find_key(struct hid_device *hid,
98                                            hid_usage_cmp_t match,
99                                            unsigned int value,
100                                            unsigned int *usage_idx)
101 {
102         unsigned int i, j, k, cur_idx = 0;
103         struct hid_report *report;
104         struct hid_usage *usage;
105
106         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
107                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
108                         for (i = 0; i < report->maxfield; i++) {
109                                 for (j = 0; j < report->field[i]->maxusage; j++) {
110                                         usage = report->field[i]->usage + j;
111                                         if (usage->type == EV_KEY || usage->type == 0) {
112                                                 if (match(usage, cur_idx, value)) {
113                                                         if (usage_idx)
114                                                                 *usage_idx = cur_idx;
115                                                         return usage;
116                                                 }
117                                                 cur_idx++;
118                                         }
119                                 }
120                         }
121                 }
122         }
123         return NULL;
124 }
125
126 static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
127                                         const struct input_keymap_entry *ke,
128                                         unsigned int *index)
129 {
130         struct hid_usage *usage;
131         unsigned int scancode;
132
133         if (ke->flags & INPUT_KEYMAP_BY_INDEX)
134                 usage = hidinput_find_key(hid, match_index, ke->index, index);
135         else if (input_scancode_to_scalar(ke, &scancode) == 0)
136                 usage = hidinput_find_key(hid, match_scancode, scancode, index);
137         else
138                 usage = NULL;
139
140         return usage;
141 }
142
143 static int hidinput_getkeycode(struct input_dev *dev,
144                                struct input_keymap_entry *ke)
145 {
146         struct hid_device *hid = input_get_drvdata(dev);
147         struct hid_usage *usage;
148         unsigned int scancode, index;
149
150         usage = hidinput_locate_usage(hid, ke, &index);
151         if (usage) {
152                 ke->keycode = usage->type == EV_KEY ?
153                                 usage->code : KEY_RESERVED;
154                 ke->index = index;
155                 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
156                 ke->len = sizeof(scancode);
157                 memcpy(ke->scancode, &scancode, sizeof(scancode));
158                 return 0;
159         }
160
161         return -EINVAL;
162 }
163
164 static int hidinput_setkeycode(struct input_dev *dev,
165                                const struct input_keymap_entry *ke,
166                                unsigned int *old_keycode)
167 {
168         struct hid_device *hid = input_get_drvdata(dev);
169         struct hid_usage *usage;
170
171         usage = hidinput_locate_usage(hid, ke, NULL);
172         if (usage) {
173                 *old_keycode = usage->type == EV_KEY ?
174                                 usage->code : KEY_RESERVED;
175                 usage->code = ke->keycode;
176
177                 clear_bit(*old_keycode, dev->keybit);
178                 set_bit(usage->code, dev->keybit);
179                 dbg_hid("Assigned keycode %d to HID usage code %x\n",
180                         usage->code, usage->hid);
181
182                 /*
183                  * Set the keybit for the old keycode if the old keycode is used
184                  * by another key
185                  */
186                 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
187                         set_bit(*old_keycode, dev->keybit);
188
189                 return 0;
190         }
191
192         return -EINVAL;
193 }
194
195
196 /**
197  * hidinput_calc_abs_res - calculate an absolute axis resolution
198  * @field: the HID report field to calculate resolution for
199  * @code: axis code
200  *
201  * The formula is:
202  *                         (logical_maximum - logical_minimum)
203  * resolution = ----------------------------------------------------------
204  *              (physical_maximum - physical_minimum) * 10 ^ unit_exponent
205  *
206  * as seen in the HID specification v1.11 6.2.2.7 Global Items.
207  *
208  * Only exponent 1 length units are processed. Centimeters and inches are
209  * converted to millimeters. Degrees are converted to radians.
210  */
211 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
212 {
213         __s32 unit_exponent = field->unit_exponent;
214         __s32 logical_extents = field->logical_maximum -
215                                         field->logical_minimum;
216         __s32 physical_extents = field->physical_maximum -
217                                         field->physical_minimum;
218         __s32 prev;
219
220         /* Check if the extents are sane */
221         if (logical_extents <= 0 || physical_extents <= 0)
222                 return 0;
223
224         /*
225          * Verify and convert units.
226          * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
227          */
228         switch (code) {
229         case ABS_X:
230         case ABS_Y:
231         case ABS_Z:
232         case ABS_MT_POSITION_X:
233         case ABS_MT_POSITION_Y:
234         case ABS_MT_TOOL_X:
235         case ABS_MT_TOOL_Y:
236         case ABS_MT_TOUCH_MAJOR:
237         case ABS_MT_TOUCH_MINOR:
238                 if (field->unit == 0x11) {              /* If centimeters */
239                         /* Convert to millimeters */
240                         unit_exponent += 1;
241                 } else if (field->unit == 0x13) {       /* If inches */
242                         /* Convert to millimeters */
243                         prev = physical_extents;
244                         physical_extents *= 254;
245                         if (physical_extents < prev)
246                                 return 0;
247                         unit_exponent -= 1;
248                 } else {
249                         return 0;
250                 }
251                 break;
252
253         case ABS_RX:
254         case ABS_RY:
255         case ABS_RZ:
256         case ABS_WHEEL:
257         case ABS_TILT_X:
258         case ABS_TILT_Y:
259                 if (field->unit == 0x14) {              /* If degrees */
260                         /* Convert to radians */
261                         prev = logical_extents;
262                         logical_extents *= 573;
263                         if (logical_extents < prev)
264                                 return 0;
265                         unit_exponent += 1;
266                 } else if (field->unit != 0x12) {       /* If not radians */
267                         return 0;
268                 }
269                 break;
270
271         default:
272                 return 0;
273         }
274
275         /* Apply negative unit exponent */
276         for (; unit_exponent < 0; unit_exponent++) {
277                 prev = logical_extents;
278                 logical_extents *= 10;
279                 if (logical_extents < prev)
280                         return 0;
281         }
282         /* Apply positive unit exponent */
283         for (; unit_exponent > 0; unit_exponent--) {
284                 prev = physical_extents;
285                 physical_extents *= 10;
286                 if (physical_extents < prev)
287                         return 0;
288         }
289
290         /* Calculate resolution */
291         return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
292 }
293 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
294
295 #ifdef CONFIG_HID_BATTERY_STRENGTH
296 static enum power_supply_property hidinput_battery_props[] = {
297         POWER_SUPPLY_PROP_PRESENT,
298         POWER_SUPPLY_PROP_ONLINE,
299         POWER_SUPPLY_PROP_CAPACITY,
300         POWER_SUPPLY_PROP_MODEL_NAME,
301         POWER_SUPPLY_PROP_STATUS,
302         POWER_SUPPLY_PROP_SCOPE,
303 };
304
305 #define HID_BATTERY_QUIRK_PERCENT       (1 << 0) /* always reports percent */
306 #define HID_BATTERY_QUIRK_FEATURE       (1 << 1) /* ask for feature report */
307 #define HID_BATTERY_QUIRK_IGNORE        (1 << 2) /* completely ignore the battery */
308
309 static const struct hid_device_id hid_battery_quirks[] = {
310         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
311                 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
312           HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
313         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
314                 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
315           HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
316         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
317                 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
318           HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
319         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
320                                USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO),
321           HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
322         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
323                 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
324           HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
325         { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM,
326                 USB_DEVICE_ID_ELECOM_BM084),
327           HID_BATTERY_QUIRK_IGNORE },
328         { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL,
329                 USB_DEVICE_ID_SYMBOL_SCANNER_3),
330           HID_BATTERY_QUIRK_IGNORE },
331         {}
332 };
333
334 static unsigned find_battery_quirk(struct hid_device *hdev)
335 {
336         unsigned quirks = 0;
337         const struct hid_device_id *match;
338
339         match = hid_match_id(hdev, hid_battery_quirks);
340         if (match != NULL)
341                 quirks = match->driver_data;
342
343         return quirks;
344 }
345
346 static int hidinput_scale_battery_capacity(struct hid_device *dev,
347                                            int value)
348 {
349         if (dev->battery_min < dev->battery_max &&
350             value >= dev->battery_min && value <= dev->battery_max)
351                 value = ((value - dev->battery_min) * 100) /
352                         (dev->battery_max - dev->battery_min);
353
354         return value;
355 }
356
357 static int hidinput_query_battery_capacity(struct hid_device *dev)
358 {
359         u8 *buf;
360         int ret;
361
362         buf = kmalloc(2, GFP_KERNEL);
363         if (!buf)
364                 return -ENOMEM;
365
366         ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2,
367                                  dev->battery_report_type, HID_REQ_GET_REPORT);
368         if (ret != 2) {
369                 kfree(buf);
370                 return -ENODATA;
371         }
372
373         ret = hidinput_scale_battery_capacity(dev, buf[1]);
374         kfree(buf);
375         return ret;
376 }
377
378 static int hidinput_get_battery_property(struct power_supply *psy,
379                                          enum power_supply_property prop,
380                                          union power_supply_propval *val)
381 {
382         struct hid_device *dev = power_supply_get_drvdata(psy);
383         int value;
384         int ret = 0;
385
386         switch (prop) {
387         case POWER_SUPPLY_PROP_PRESENT:
388         case POWER_SUPPLY_PROP_ONLINE:
389                 val->intval = 1;
390                 break;
391
392         case POWER_SUPPLY_PROP_CAPACITY:
393                 if (dev->battery_status != HID_BATTERY_REPORTED &&
394                     !dev->battery_avoid_query) {
395                         value = hidinput_query_battery_capacity(dev);
396                         if (value < 0)
397                                 return value;
398                 } else  {
399                         value = dev->battery_capacity;
400                 }
401
402                 val->intval = value;
403                 break;
404
405         case POWER_SUPPLY_PROP_MODEL_NAME:
406                 val->strval = dev->name;
407                 break;
408
409         case POWER_SUPPLY_PROP_STATUS:
410                 if (dev->battery_status != HID_BATTERY_REPORTED &&
411                     !dev->battery_avoid_query) {
412                         value = hidinput_query_battery_capacity(dev);
413                         if (value < 0)
414                                 return value;
415
416                         dev->battery_capacity = value;
417                         dev->battery_status = HID_BATTERY_QUERIED;
418                 }
419
420                 if (dev->battery_status == HID_BATTERY_UNKNOWN)
421                         val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
422                 else if (dev->battery_capacity == 100)
423                         val->intval = POWER_SUPPLY_STATUS_FULL;
424                 else
425                         val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
426                 break;
427
428         case POWER_SUPPLY_PROP_SCOPE:
429                 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
430                 break;
431
432         default:
433                 ret = -EINVAL;
434                 break;
435         }
436
437         return ret;
438 }
439
440 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
441 {
442         struct power_supply_desc *psy_desc;
443         struct power_supply_config psy_cfg = { .drv_data = dev, };
444         unsigned quirks;
445         s32 min, max;
446         int error;
447
448         if (dev->battery)
449                 return 0;       /* already initialized? */
450
451         quirks = find_battery_quirk(dev);
452
453         hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
454                 dev->bus, dev->vendor, dev->product, dev->version, quirks);
455
456         if (quirks & HID_BATTERY_QUIRK_IGNORE)
457                 return 0;
458
459         psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
460         if (!psy_desc)
461                 return -ENOMEM;
462
463         psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery",
464                                    strlen(dev->uniq) ?
465                                         dev->uniq : dev_name(&dev->dev));
466         if (!psy_desc->name) {
467                 error = -ENOMEM;
468                 goto err_free_mem;
469         }
470
471         psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
472         psy_desc->properties = hidinput_battery_props;
473         psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
474         psy_desc->use_for_apm = 0;
475         psy_desc->get_property = hidinput_get_battery_property;
476
477         min = field->logical_minimum;
478         max = field->logical_maximum;
479
480         if (quirks & HID_BATTERY_QUIRK_PERCENT) {
481                 min = 0;
482                 max = 100;
483         }
484
485         if (quirks & HID_BATTERY_QUIRK_FEATURE)
486                 report_type = HID_FEATURE_REPORT;
487
488         dev->battery_min = min;
489         dev->battery_max = max;
490         dev->battery_report_type = report_type;
491         dev->battery_report_id = field->report->id;
492
493         /*
494          * Stylus is normally not connected to the device and thus we
495          * can't query the device and get meaningful battery strength.
496          * We have to wait for the device to report it on its own.
497          */
498         dev->battery_avoid_query = report_type == HID_INPUT_REPORT &&
499                                    field->physical == HID_DG_STYLUS;
500
501         dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
502         if (IS_ERR(dev->battery)) {
503                 error = PTR_ERR(dev->battery);
504                 hid_warn(dev, "can't register power supply: %d\n", error);
505                 goto err_free_name;
506         }
507
508         power_supply_powers(dev->battery, &dev->dev);
509         return 0;
510
511 err_free_name:
512         kfree(psy_desc->name);
513 err_free_mem:
514         kfree(psy_desc);
515         dev->battery = NULL;
516         return error;
517 }
518
519 static void hidinput_cleanup_battery(struct hid_device *dev)
520 {
521         const struct power_supply_desc *psy_desc;
522
523         if (!dev->battery)
524                 return;
525
526         psy_desc = dev->battery->desc;
527         power_supply_unregister(dev->battery);
528         kfree(psy_desc->name);
529         kfree(psy_desc);
530         dev->battery = NULL;
531 }
532
533 static void hidinput_update_battery(struct hid_device *dev, int value)
534 {
535         int capacity;
536
537         if (!dev->battery)
538                 return;
539
540         if (value == 0 || value < dev->battery_min || value > dev->battery_max)
541                 return;
542
543         capacity = hidinput_scale_battery_capacity(dev, value);
544
545         if (dev->battery_status != HID_BATTERY_REPORTED ||
546             capacity != dev->battery_capacity) {
547                 dev->battery_capacity = capacity;
548                 dev->battery_status = HID_BATTERY_REPORTED;
549                 power_supply_changed(dev->battery);
550         }
551 }
552 #else  /* !CONFIG_HID_BATTERY_STRENGTH */
553 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
554                                   struct hid_field *field)
555 {
556         return 0;
557 }
558
559 static void hidinput_cleanup_battery(struct hid_device *dev)
560 {
561 }
562
563 static void hidinput_update_battery(struct hid_device *dev, int value)
564 {
565 }
566 #endif  /* CONFIG_HID_BATTERY_STRENGTH */
567
568 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
569                                      struct hid_usage *usage)
570 {
571         struct input_dev *input = hidinput->input;
572         struct hid_device *device = input_get_drvdata(input);
573         int max = 0, code;
574         unsigned long *bit = NULL;
575
576         field->hidinput = hidinput;
577
578         if (field->flags & HID_MAIN_ITEM_CONSTANT)
579                 goto ignore;
580
581         /* Ignore if report count is out of bounds. */
582         if (field->report_count < 1)
583                 goto ignore;
584
585         /* only LED usages are supported in output fields */
586         if (field->report_type == HID_OUTPUT_REPORT &&
587                         (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
588                 goto ignore;
589         }
590
591         if (device->driver->input_mapping) {
592                 int ret = device->driver->input_mapping(device, hidinput, field,
593                                 usage, &bit, &max);
594                 if (ret > 0)
595                         goto mapped;
596                 if (ret < 0)
597                         goto ignore;
598         }
599
600         switch (usage->hid & HID_USAGE_PAGE) {
601         case HID_UP_UNDEFINED:
602                 goto ignore;
603
604         case HID_UP_KEYBOARD:
605                 set_bit(EV_REP, input->evbit);
606
607                 if ((usage->hid & HID_USAGE) < 256) {
608                         if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
609                         map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
610                 } else
611                         map_key(KEY_UNKNOWN);
612
613                 break;
614
615         case HID_UP_BUTTON:
616                 code = ((usage->hid - 1) & HID_USAGE);
617
618                 switch (field->application) {
619                 case HID_GD_MOUSE:
620                 case HID_GD_POINTER:  code += BTN_MOUSE; break;
621                 case HID_GD_JOYSTICK:
622                                 if (code <= 0xf)
623                                         code += BTN_JOYSTICK;
624                                 else
625                                         code += BTN_TRIGGER_HAPPY - 0x10;
626                                 break;
627                 case HID_GD_GAMEPAD:
628                                 if (code <= 0xf)
629                                         code += BTN_GAMEPAD;
630                                 else
631                                         code += BTN_TRIGGER_HAPPY - 0x10;
632                                 break;
633                 default:
634                         switch (field->physical) {
635                         case HID_GD_MOUSE:
636                         case HID_GD_POINTER:  code += BTN_MOUSE; break;
637                         case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
638                         case HID_GD_GAMEPAD:  code += BTN_GAMEPAD; break;
639                         default:              code += BTN_MISC;
640                         }
641                 }
642
643                 map_key(code);
644                 break;
645
646         case HID_UP_SIMULATION:
647                 switch (usage->hid & 0xffff) {
648                 case 0xba: map_abs(ABS_RUDDER);   break;
649                 case 0xbb: map_abs(ABS_THROTTLE); break;
650                 case 0xc4: map_abs(ABS_GAS);      break;
651                 case 0xc5: map_abs(ABS_BRAKE);    break;
652                 case 0xc8: map_abs(ABS_WHEEL);    break;
653                 default:   goto ignore;
654                 }
655                 break;
656
657         case HID_UP_GENDESK:
658                 if ((usage->hid & 0xf0) == 0x80) {      /* SystemControl */
659                         switch (usage->hid & 0xf) {
660                         case 0x1: map_key_clear(KEY_POWER);  break;
661                         case 0x2: map_key_clear(KEY_SLEEP);  break;
662                         case 0x3: map_key_clear(KEY_WAKEUP); break;
663                         case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
664                         case 0x5: map_key_clear(KEY_MENU); break;
665                         case 0x6: map_key_clear(KEY_PROG1); break;
666                         case 0x7: map_key_clear(KEY_HELP); break;
667                         case 0x8: map_key_clear(KEY_EXIT); break;
668                         case 0x9: map_key_clear(KEY_SELECT); break;
669                         case 0xa: map_key_clear(KEY_RIGHT); break;
670                         case 0xb: map_key_clear(KEY_LEFT); break;
671                         case 0xc: map_key_clear(KEY_UP); break;
672                         case 0xd: map_key_clear(KEY_DOWN); break;
673                         case 0xe: map_key_clear(KEY_POWER2); break;
674                         case 0xf: map_key_clear(KEY_RESTART); break;
675                         default: goto unknown;
676                         }
677                         break;
678                 }
679
680                 if ((usage->hid & 0xf0) == 0xb0) {      /* SC - Display */
681                         switch (usage->hid & 0xf) {
682                         case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break;
683                         default: goto ignore;
684                         }
685                         break;
686                 }
687
688                 /*
689                  * Some lazy vendors declare 255 usages for System Control,
690                  * leading to the creation of ABS_X|Y axis and too many others.
691                  * It wouldn't be a problem if joydev doesn't consider the
692                  * device as a joystick then.
693                  */
694                 if (field->application == HID_GD_SYSTEM_CONTROL)
695                         goto ignore;
696
697                 if ((usage->hid & 0xf0) == 0x90) {      /* D-pad */
698                         switch (usage->hid) {
699                         case HID_GD_UP:    usage->hat_dir = 1; break;
700                         case HID_GD_DOWN:  usage->hat_dir = 5; break;
701                         case HID_GD_RIGHT: usage->hat_dir = 3; break;
702                         case HID_GD_LEFT:  usage->hat_dir = 7; break;
703                         default: goto unknown;
704                         }
705                         if (field->dpad) {
706                                 map_abs(field->dpad);
707                                 goto ignore;
708                         }
709                         map_abs(ABS_HAT0X);
710                         break;
711                 }
712
713                 switch (usage->hid) {
714                 /* These usage IDs map directly to the usage codes. */
715                 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
716                 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
717                         if (field->flags & HID_MAIN_ITEM_RELATIVE)
718                                 map_rel(usage->hid & 0xf);
719                         else
720                                 map_abs_clear(usage->hid & 0xf);
721                         break;
722
723                 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
724                         if (field->flags & HID_MAIN_ITEM_RELATIVE)
725                                 map_rel(usage->hid & 0xf);
726                         else
727                                 map_abs(usage->hid & 0xf);
728                         break;
729
730                 case HID_GD_HATSWITCH:
731                         usage->hat_min = field->logical_minimum;
732                         usage->hat_max = field->logical_maximum;
733                         map_abs(ABS_HAT0X);
734                         break;
735
736                 case HID_GD_START:      map_key_clear(BTN_START);       break;
737                 case HID_GD_SELECT:     map_key_clear(BTN_SELECT);      break;
738
739                 case HID_GD_RFKILL_BTN:
740                         /* MS wireless radio ctl extension, also check CA */
741                         if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
742                                 map_key_clear(KEY_RFKILL);
743                                 /* We need to simulate the btn release */
744                                 field->flags |= HID_MAIN_ITEM_RELATIVE;
745                                 break;
746                         }
747
748                 default: goto unknown;
749                 }
750
751                 break;
752
753         case HID_UP_LED:
754                 switch (usage->hid & 0xffff) {                /* HID-Value:                   */
755                 case 0x01:  map_led (LED_NUML);     break;    /*   "Num Lock"                 */
756                 case 0x02:  map_led (LED_CAPSL);    break;    /*   "Caps Lock"                */
757                 case 0x03:  map_led (LED_SCROLLL);  break;    /*   "Scroll Lock"              */
758                 case 0x04:  map_led (LED_COMPOSE);  break;    /*   "Compose"                  */
759                 case 0x05:  map_led (LED_KANA);     break;    /*   "Kana"                     */
760                 case 0x27:  map_led (LED_SLEEP);    break;    /*   "Stand-By"                 */
761                 case 0x4c:  map_led (LED_SUSPEND);  break;    /*   "System Suspend"           */
762                 case 0x09:  map_led (LED_MUTE);     break;    /*   "Mute"                     */
763                 case 0x4b:  map_led (LED_MISC);     break;    /*   "Generic Indicator"        */
764                 case 0x19:  map_led (LED_MAIL);     break;    /*   "Message Waiting"          */
765                 case 0x4d:  map_led (LED_CHARGING); break;    /*   "External Power Connected" */
766
767                 default: goto ignore;
768                 }
769                 break;
770
771         case HID_UP_DIGITIZER:
772                 if ((field->application & 0xff) == 0x01) /* Digitizer */
773                         __set_bit(INPUT_PROP_POINTER, input->propbit);
774                 else if ((field->application & 0xff) == 0x02) /* Pen */
775                         __set_bit(INPUT_PROP_DIRECT, input->propbit);
776
777                 switch (usage->hid & 0xff) {
778                 case 0x00: /* Undefined */
779                         goto ignore;
780
781                 case 0x30: /* TipPressure */
782                         if (!test_bit(BTN_TOUCH, input->keybit)) {
783                                 device->quirks |= HID_QUIRK_NOTOUCH;
784                                 set_bit(EV_KEY, input->evbit);
785                                 set_bit(BTN_TOUCH, input->keybit);
786                         }
787                         map_abs_clear(ABS_PRESSURE);
788                         break;
789
790                 case 0x32: /* InRange */
791                         switch (field->physical & 0xff) {
792                         case 0x21: map_key(BTN_TOOL_MOUSE); break;
793                         case 0x22: map_key(BTN_TOOL_FINGER); break;
794                         default: map_key(BTN_TOOL_PEN); break;
795                         }
796                         break;
797
798                 case 0x3b: /* Battery Strength */
799                         hidinput_setup_battery(device, HID_INPUT_REPORT, field);
800                         usage->type = EV_PWR;
801                         goto ignore;
802
803                 case 0x3c: /* Invert */
804                         map_key_clear(BTN_TOOL_RUBBER);
805                         break;
806
807                 case 0x3d: /* X Tilt */
808                         map_abs_clear(ABS_TILT_X);
809                         break;
810
811                 case 0x3e: /* Y Tilt */
812                         map_abs_clear(ABS_TILT_Y);
813                         break;
814
815                 case 0x33: /* Touch */
816                 case 0x42: /* TipSwitch */
817                 case 0x43: /* TipSwitch2 */
818                         device->quirks &= ~HID_QUIRK_NOTOUCH;
819                         map_key_clear(BTN_TOUCH);
820                         break;
821
822                 case 0x44: /* BarrelSwitch */
823                         map_key_clear(BTN_STYLUS);
824                         break;
825
826                 case 0x45: /* ERASER */
827                         /*
828                          * This event is reported when eraser tip touches the surface.
829                          * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when
830                          * tool gets in proximity.
831                          */
832                         map_key_clear(BTN_TOUCH);
833                         break;
834
835                 case 0x46: /* TabletPick */
836                 case 0x5a: /* SecondaryBarrelSwitch */
837                         map_key_clear(BTN_STYLUS2);
838                         break;
839
840                 case 0x5b: /* TransducerSerialNumber */
841                         usage->type = EV_MSC;
842                         usage->code = MSC_SERIAL;
843                         bit = input->mscbit;
844                         max = MSC_MAX;
845                         break;
846
847                 default:  goto unknown;
848                 }
849                 break;
850
851         case HID_UP_TELEPHONY:
852                 switch (usage->hid & HID_USAGE) {
853                 case 0x2f: map_key_clear(KEY_MICMUTE);          break;
854                 case 0xb0: map_key_clear(KEY_NUMERIC_0);        break;
855                 case 0xb1: map_key_clear(KEY_NUMERIC_1);        break;
856                 case 0xb2: map_key_clear(KEY_NUMERIC_2);        break;
857                 case 0xb3: map_key_clear(KEY_NUMERIC_3);        break;
858                 case 0xb4: map_key_clear(KEY_NUMERIC_4);        break;
859                 case 0xb5: map_key_clear(KEY_NUMERIC_5);        break;
860                 case 0xb6: map_key_clear(KEY_NUMERIC_6);        break;
861                 case 0xb7: map_key_clear(KEY_NUMERIC_7);        break;
862                 case 0xb8: map_key_clear(KEY_NUMERIC_8);        break;
863                 case 0xb9: map_key_clear(KEY_NUMERIC_9);        break;
864                 case 0xba: map_key_clear(KEY_NUMERIC_STAR);     break;
865                 case 0xbb: map_key_clear(KEY_NUMERIC_POUND);    break;
866                 case 0xbc: map_key_clear(KEY_NUMERIC_A);        break;
867                 case 0xbd: map_key_clear(KEY_NUMERIC_B);        break;
868                 case 0xbe: map_key_clear(KEY_NUMERIC_C);        break;
869                 case 0xbf: map_key_clear(KEY_NUMERIC_D);        break;
870                 default: goto ignore;
871                 }
872                 break;
873
874         case HID_UP_CONSUMER:   /* USB HUT v1.12, pages 75-84 */
875                 switch (usage->hid & HID_USAGE) {
876                 case 0x000: goto ignore;
877                 case 0x030: map_key_clear(KEY_POWER);           break;
878                 case 0x031: map_key_clear(KEY_RESTART);         break;
879                 case 0x032: map_key_clear(KEY_SLEEP);           break;
880                 case 0x034: map_key_clear(KEY_SLEEP);           break;
881                 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE);  break;
882                 case 0x036: map_key_clear(BTN_MISC);            break;
883
884                 case 0x040: map_key_clear(KEY_MENU);            break; /* Menu */
885                 case 0x041: map_key_clear(KEY_SELECT);          break; /* Menu Pick */
886                 case 0x042: map_key_clear(KEY_UP);              break; /* Menu Up */
887                 case 0x043: map_key_clear(KEY_DOWN);            break; /* Menu Down */
888                 case 0x044: map_key_clear(KEY_LEFT);            break; /* Menu Left */
889                 case 0x045: map_key_clear(KEY_RIGHT);           break; /* Menu Right */
890                 case 0x046: map_key_clear(KEY_ESC);             break; /* Menu Escape */
891                 case 0x047: map_key_clear(KEY_KPPLUS);          break; /* Menu Value Increase */
892                 case 0x048: map_key_clear(KEY_KPMINUS);         break; /* Menu Value Decrease */
893
894                 case 0x060: map_key_clear(KEY_INFO);            break; /* Data On Screen */
895                 case 0x061: map_key_clear(KEY_SUBTITLE);        break; /* Closed Caption */
896                 case 0x063: map_key_clear(KEY_VCR);             break; /* VCR/TV */
897                 case 0x065: map_key_clear(KEY_CAMERA);          break; /* Snapshot */
898                 case 0x069: map_key_clear(KEY_RED);             break;
899                 case 0x06a: map_key_clear(KEY_GREEN);           break;
900                 case 0x06b: map_key_clear(KEY_BLUE);            break;
901                 case 0x06c: map_key_clear(KEY_YELLOW);          break;
902                 case 0x06d: map_key_clear(KEY_ASPECT_RATIO);    break;
903
904                 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP);            break;
905                 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN);          break;
906                 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE);       break;
907                 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN);          break;
908                 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX);          break;
909                 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO);         break;
910
911                 case 0x079: map_key_clear(KEY_KBDILLUMUP);      break;
912                 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN);    break;
913                 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE);  break;
914
915                 case 0x082: map_key_clear(KEY_VIDEO_NEXT);      break;
916                 case 0x083: map_key_clear(KEY_LAST);            break;
917                 case 0x084: map_key_clear(KEY_ENTER);           break;
918                 case 0x088: map_key_clear(KEY_PC);              break;
919                 case 0x089: map_key_clear(KEY_TV);              break;
920                 case 0x08a: map_key_clear(KEY_WWW);             break;
921                 case 0x08b: map_key_clear(KEY_DVD);             break;
922                 case 0x08c: map_key_clear(KEY_PHONE);           break;
923                 case 0x08d: map_key_clear(KEY_PROGRAM);         break;
924                 case 0x08e: map_key_clear(KEY_VIDEOPHONE);      break;
925                 case 0x08f: map_key_clear(KEY_GAMES);           break;
926                 case 0x090: map_key_clear(KEY_MEMO);            break;
927                 case 0x091: map_key_clear(KEY_CD);              break;
928                 case 0x092: map_key_clear(KEY_VCR);             break;
929                 case 0x093: map_key_clear(KEY_TUNER);           break;
930                 case 0x094: map_key_clear(KEY_EXIT);            break;
931                 case 0x095: map_key_clear(KEY_HELP);            break;
932                 case 0x096: map_key_clear(KEY_TAPE);            break;
933                 case 0x097: map_key_clear(KEY_TV2);             break;
934                 case 0x098: map_key_clear(KEY_SAT);             break;
935                 case 0x09a: map_key_clear(KEY_PVR);             break;
936
937                 case 0x09c: map_key_clear(KEY_CHANNELUP);       break;
938                 case 0x09d: map_key_clear(KEY_CHANNELDOWN);     break;
939                 case 0x0a0: map_key_clear(KEY_VCR2);            break;
940
941                 case 0x0b0: map_key_clear(KEY_PLAY);            break;
942                 case 0x0b1: map_key_clear(KEY_PAUSE);           break;
943                 case 0x0b2: map_key_clear(KEY_RECORD);          break;
944                 case 0x0b3: map_key_clear(KEY_FASTFORWARD);     break;
945                 case 0x0b4: map_key_clear(KEY_REWIND);          break;
946                 case 0x0b5: map_key_clear(KEY_NEXTSONG);        break;
947                 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG);    break;
948                 case 0x0b7: map_key_clear(KEY_STOPCD);          break;
949                 case 0x0b8: map_key_clear(KEY_EJECTCD);         break;
950                 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT);    break;
951                 case 0x0b9: map_key_clear(KEY_SHUFFLE);         break;
952                 case 0x0bf: map_key_clear(KEY_SLOW);            break;
953
954                 case 0x0cd: map_key_clear(KEY_PLAYPAUSE);       break;
955                 case 0x0cf: map_key_clear(KEY_VOICECOMMAND);    break;
956                 case 0x0e0: map_abs_clear(ABS_VOLUME);          break;
957                 case 0x0e2: map_key_clear(KEY_MUTE);            break;
958                 case 0x0e5: map_key_clear(KEY_BASSBOOST);       break;
959                 case 0x0e9: map_key_clear(KEY_VOLUMEUP);        break;
960                 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN);      break;
961                 case 0x0f5: map_key_clear(KEY_SLOW);            break;
962
963                 case 0x181: map_key_clear(KEY_BUTTONCONFIG);    break;
964                 case 0x182: map_key_clear(KEY_BOOKMARKS);       break;
965                 case 0x183: map_key_clear(KEY_CONFIG);          break;
966                 case 0x184: map_key_clear(KEY_WORDPROCESSOR);   break;
967                 case 0x185: map_key_clear(KEY_EDITOR);          break;
968                 case 0x186: map_key_clear(KEY_SPREADSHEET);     break;
969                 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR);  break;
970                 case 0x188: map_key_clear(KEY_PRESENTATION);    break;
971                 case 0x189: map_key_clear(KEY_DATABASE);        break;
972                 case 0x18a: map_key_clear(KEY_MAIL);            break;
973                 case 0x18b: map_key_clear(KEY_NEWS);            break;
974                 case 0x18c: map_key_clear(KEY_VOICEMAIL);       break;
975                 case 0x18d: map_key_clear(KEY_ADDRESSBOOK);     break;
976                 case 0x18e: map_key_clear(KEY_CALENDAR);        break;
977                 case 0x18f: map_key_clear(KEY_TASKMANAGER);     break;
978                 case 0x190: map_key_clear(KEY_JOURNAL);         break;
979                 case 0x191: map_key_clear(KEY_FINANCE);         break;
980                 case 0x192: map_key_clear(KEY_CALC);            break;
981                 case 0x193: map_key_clear(KEY_PLAYER);          break;
982                 case 0x194: map_key_clear(KEY_FILE);            break;
983                 case 0x196: map_key_clear(KEY_WWW);             break;
984                 case 0x199: map_key_clear(KEY_CHAT);            break;
985                 case 0x19c: map_key_clear(KEY_LOGOFF);          break;
986                 case 0x19e: map_key_clear(KEY_COFFEE);          break;
987                 case 0x19f: map_key_clear(KEY_CONTROLPANEL);            break;
988                 case 0x1a2: map_key_clear(KEY_APPSELECT);               break;
989                 case 0x1a3: map_key_clear(KEY_NEXT);            break;
990                 case 0x1a4: map_key_clear(KEY_PREVIOUS);        break;
991                 case 0x1a6: map_key_clear(KEY_HELP);            break;
992                 case 0x1a7: map_key_clear(KEY_DOCUMENTS);       break;
993                 case 0x1ab: map_key_clear(KEY_SPELLCHECK);      break;
994                 case 0x1ae: map_key_clear(KEY_KEYBOARD);        break;
995                 case 0x1b1: map_key_clear(KEY_SCREENSAVER);             break;
996                 case 0x1b4: map_key_clear(KEY_FILE);            break;
997                 case 0x1b6: map_key_clear(KEY_IMAGES);          break;
998                 case 0x1b7: map_key_clear(KEY_AUDIO);           break;
999                 case 0x1b8: map_key_clear(KEY_VIDEO);           break;
1000                 case 0x1bc: map_key_clear(KEY_MESSENGER);       break;
1001                 case 0x1bd: map_key_clear(KEY_INFO);            break;
1002                 case 0x201: map_key_clear(KEY_NEW);             break;
1003                 case 0x202: map_key_clear(KEY_OPEN);            break;
1004                 case 0x203: map_key_clear(KEY_CLOSE);           break;
1005                 case 0x204: map_key_clear(KEY_EXIT);            break;
1006                 case 0x207: map_key_clear(KEY_SAVE);            break;
1007                 case 0x208: map_key_clear(KEY_PRINT);           break;
1008                 case 0x209: map_key_clear(KEY_PROPS);           break;
1009                 case 0x21a: map_key_clear(KEY_UNDO);            break;
1010                 case 0x21b: map_key_clear(KEY_COPY);            break;
1011                 case 0x21c: map_key_clear(KEY_CUT);             break;
1012                 case 0x21d: map_key_clear(KEY_PASTE);           break;
1013                 case 0x21f: map_key_clear(KEY_FIND);            break;
1014                 case 0x221: map_key_clear(KEY_SEARCH);          break;
1015                 case 0x222: map_key_clear(KEY_GOTO);            break;
1016                 case 0x223: map_key_clear(KEY_HOMEPAGE);        break;
1017                 case 0x224: map_key_clear(KEY_BACK);            break;
1018                 case 0x225: map_key_clear(KEY_FORWARD);         break;
1019                 case 0x226: map_key_clear(KEY_STOP);            break;
1020                 case 0x227: map_key_clear(KEY_REFRESH);         break;
1021                 case 0x22a: map_key_clear(KEY_BOOKMARKS);       break;
1022                 case 0x22d: map_key_clear(KEY_ZOOMIN);          break;
1023                 case 0x22e: map_key_clear(KEY_ZOOMOUT);         break;
1024                 case 0x22f: map_key_clear(KEY_ZOOMRESET);       break;
1025                 case 0x232: map_key_clear(KEY_FULL_SCREEN);     break;
1026                 case 0x233: map_key_clear(KEY_SCROLLUP);        break;
1027                 case 0x234: map_key_clear(KEY_SCROLLDOWN);      break;
1028                 case 0x238: map_rel(REL_HWHEEL);                break;
1029                 case 0x23d: map_key_clear(KEY_EDIT);            break;
1030                 case 0x25f: map_key_clear(KEY_CANCEL);          break;
1031                 case 0x269: map_key_clear(KEY_INSERT);          break;
1032                 case 0x26a: map_key_clear(KEY_DELETE);          break;
1033                 case 0x279: map_key_clear(KEY_REDO);            break;
1034
1035                 case 0x289: map_key_clear(KEY_REPLY);           break;
1036                 case 0x28b: map_key_clear(KEY_FORWARDMAIL);     break;
1037                 case 0x28c: map_key_clear(KEY_SEND);            break;
1038
1039                 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV);             break;
1040                 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT);             break;
1041                 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP);                break;
1042                 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP);                break;
1043                 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT);   break;
1044                 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL);   break;
1045
1046                 case 0x29f: map_key_clear(KEY_SCALE);           break;
1047
1048                 default: map_key_clear(KEY_UNKNOWN);
1049                 }
1050                 break;
1051
1052         case HID_UP_GENDEVCTRLS:
1053                 switch (usage->hid) {
1054                 case HID_DC_BATTERYSTRENGTH:
1055                         hidinput_setup_battery(device, HID_INPUT_REPORT, field);
1056                         usage->type = EV_PWR;
1057                         goto ignore;
1058                 }
1059                 goto unknown;
1060
1061         case HID_UP_HPVENDOR:   /* Reported on a Dutch layout HP5308 */
1062                 set_bit(EV_REP, input->evbit);
1063                 switch (usage->hid & HID_USAGE) {
1064                 case 0x021: map_key_clear(KEY_PRINT);           break;
1065                 case 0x070: map_key_clear(KEY_HP);              break;
1066                 case 0x071: map_key_clear(KEY_CAMERA);          break;
1067                 case 0x072: map_key_clear(KEY_SOUND);           break;
1068                 case 0x073: map_key_clear(KEY_QUESTION);        break;
1069                 case 0x080: map_key_clear(KEY_EMAIL);           break;
1070                 case 0x081: map_key_clear(KEY_CHAT);            break;
1071                 case 0x082: map_key_clear(KEY_SEARCH);          break;
1072                 case 0x083: map_key_clear(KEY_CONNECT);         break;
1073                 case 0x084: map_key_clear(KEY_FINANCE);         break;
1074                 case 0x085: map_key_clear(KEY_SPORT);           break;
1075                 case 0x086: map_key_clear(KEY_SHOP);            break;
1076                 default:    goto ignore;
1077                 }
1078                 break;
1079
1080         case HID_UP_HPVENDOR2:
1081                 set_bit(EV_REP, input->evbit);
1082                 switch (usage->hid & HID_USAGE) {
1083                 case 0x001: map_key_clear(KEY_MICMUTE);         break;
1084                 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN);  break;
1085                 case 0x004: map_key_clear(KEY_BRIGHTNESSUP);    break;
1086                 default:    goto ignore;
1087                 }
1088                 break;
1089
1090         case HID_UP_MSVENDOR:
1091                 goto ignore;
1092
1093         case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
1094                 set_bit(EV_REP, input->evbit);
1095                 goto ignore;
1096
1097         case HID_UP_LOGIVENDOR:
1098                 /* intentional fallback */
1099         case HID_UP_LOGIVENDOR2:
1100                 /* intentional fallback */
1101         case HID_UP_LOGIVENDOR3:
1102                 goto ignore;
1103
1104         case HID_UP_PID:
1105                 switch (usage->hid & HID_USAGE) {
1106                 case 0xa4: map_key_clear(BTN_DEAD);     break;
1107                 default: goto ignore;
1108                 }
1109                 break;
1110
1111         default:
1112         unknown:
1113                 if (field->report_size == 1) {
1114                         if (field->report->type == HID_OUTPUT_REPORT) {
1115                                 map_led(LED_MISC);
1116                                 break;
1117                         }
1118                         map_key(BTN_MISC);
1119                         break;
1120                 }
1121                 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
1122                         map_rel(REL_MISC);
1123                         break;
1124                 }
1125                 map_abs(ABS_MISC);
1126                 break;
1127         }
1128
1129 mapped:
1130         if (device->driver->input_mapped && device->driver->input_mapped(device,
1131                                 hidinput, field, usage, &bit, &max) < 0)
1132                 goto ignore;
1133
1134         set_bit(usage->type, input->evbit);
1135
1136         /*
1137          * This part is *really* controversial:
1138          * - HID aims at being generic so we should do our best to export
1139          *   all incoming events
1140          * - HID describes what events are, so there is no reason for ABS_X
1141          *   to be mapped to ABS_Y
1142          * - HID is using *_MISC+N as a default value, but nothing prevents
1143          *   *_MISC+N to overwrite a legitimate even, which confuses userspace
1144          *   (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different
1145          *   processing)
1146          *
1147          * If devices still want to use this (at their own risk), they will
1148          * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but
1149          * the default should be a reliable mapping.
1150          */
1151         while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
1152                 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {
1153                         usage->code = find_next_zero_bit(bit,
1154                                                          max + 1,
1155                                                          usage->code);
1156                 } else {
1157                         device->status |= HID_STAT_DUP_DETECTED;
1158                         goto ignore;
1159                 }
1160         }
1161
1162         if (usage->code > max)
1163                 goto ignore;
1164
1165         if (usage->type == EV_ABS) {
1166
1167                 int a = field->logical_minimum;
1168                 int b = field->logical_maximum;
1169
1170                 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1171                         a = field->logical_minimum = 0;
1172                         b = field->logical_maximum = 255;
1173                 }
1174
1175                 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1176                         input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
1177                 else    input_set_abs_params(input, usage->code, a, b, 0, 0);
1178
1179                 input_abs_set_res(input, usage->code,
1180                                   hidinput_calc_abs_res(field, usage->code));
1181
1182                 /* use a larger default input buffer for MT devices */
1183                 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1184                         input_set_events_per_packet(input, 60);
1185         }
1186
1187         if (usage->type == EV_ABS &&
1188             (usage->hat_min < usage->hat_max || usage->hat_dir)) {
1189                 int i;
1190                 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1191                         input_set_abs_params(input, i, -1, 1, 0, 0);
1192                         set_bit(i, input->absbit);
1193                 }
1194                 if (usage->hat_dir && !field->dpad)
1195                         field->dpad = usage->code;
1196         }
1197
1198         /* for those devices which produce Consumer volume usage as relative,
1199          * we emulate pressing volumeup/volumedown appropriate number of times
1200          * in hidinput_hid_event()
1201          */
1202         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1203                         (usage->code == ABS_VOLUME)) {
1204                 set_bit(KEY_VOLUMEUP, input->keybit);
1205                 set_bit(KEY_VOLUMEDOWN, input->keybit);
1206         }
1207
1208         if (usage->type == EV_KEY) {
1209                 set_bit(EV_MSC, input->evbit);
1210                 set_bit(MSC_SCAN, input->mscbit);
1211         }
1212
1213 ignore:
1214         return;
1215
1216 }
1217
1218 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1219 {
1220         struct input_dev *input;
1221         unsigned *quirks = &hid->quirks;
1222
1223         if (!usage->type)
1224                 return;
1225
1226         if (usage->type == EV_PWR) {
1227                 hidinput_update_battery(hid, value);
1228                 return;
1229         }
1230
1231         if (!field->hidinput)
1232                 return;
1233
1234         input = field->hidinput->input;
1235
1236         if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1237                 int hat_dir = usage->hat_dir;
1238                 if (!hat_dir)
1239                         hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1240                 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1241                 input_event(input, usage->type, usage->code    , hid_hat_to_axis[hat_dir].x);
1242                 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1243                 return;
1244         }
1245
1246         if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
1247                 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
1248                 return;
1249         }
1250
1251         if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
1252                 if (value) {
1253                         input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
1254                         return;
1255                 }
1256                 input_event(input, usage->type, usage->code, 0);
1257                 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
1258                 return;
1259         }
1260
1261         if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
1262                 int a = field->logical_minimum;
1263                 int b = field->logical_maximum;
1264                 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
1265         }
1266
1267         if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
1268                 dbg_hid("Maximum Effects - %d\n",value);
1269                 return;
1270         }
1271
1272         if (usage->hid == (HID_UP_PID | 0x7fUL)) {
1273                 dbg_hid("PID Pool Report\n");
1274                 return;
1275         }
1276
1277         if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1278                 return;
1279
1280         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1281                         (usage->code == ABS_VOLUME)) {
1282                 int count = abs(value);
1283                 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1284                 int i;
1285
1286                 for (i = 0; i < count; i++) {
1287                         input_event(input, EV_KEY, direction, 1);
1288                         input_sync(input);
1289                         input_event(input, EV_KEY, direction, 0);
1290                         input_sync(input);
1291                 }
1292                 return;
1293         }
1294
1295         /*
1296          * Ignore out-of-range values as per HID specification,
1297          * section 5.10 and 6.2.25, when NULL state bit is present.
1298          * When it's not, clamp the value to match Microsoft's input
1299          * driver as mentioned in "Required HID usages for digitizers":
1300          * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
1301          *
1302          * The logical_minimum < logical_maximum check is done so that we
1303          * don't unintentionally discard values sent by devices which
1304          * don't specify logical min and max.
1305          */
1306         if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1307             (field->logical_minimum < field->logical_maximum)) {
1308                 if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
1309                     (value < field->logical_minimum ||
1310                      value > field->logical_maximum)) {
1311                         dbg_hid("Ignoring out-of-range value %x\n", value);
1312                         return;
1313                 }
1314                 value = clamp(value,
1315                               field->logical_minimum,
1316                               field->logical_maximum);
1317         }
1318
1319         /*
1320          * Ignore reports for absolute data if the data didn't change. This is
1321          * not only an optimization but also fixes 'dead' key reports. Some
1322          * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1323          * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1324          * can only have one of them physically available. The 'dead' keys
1325          * report constant 0. As all map to the same keycode, they'd confuse
1326          * the input layer. If we filter the 'dead' keys on the HID level, we
1327          * skip the keycode translation and only forward real events.
1328          */
1329         if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1330                               HID_MAIN_ITEM_BUFFERED_BYTE)) &&
1331                               (field->flags & HID_MAIN_ITEM_VARIABLE) &&
1332             usage->usage_index < field->maxusage &&
1333             value == field->value[usage->usage_index])
1334                 return;
1335
1336         /* report the usage code as scancode if the key status has changed */
1337         if (usage->type == EV_KEY &&
1338             (!test_bit(usage->code, input->key)) == value)
1339                 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1340
1341         input_event(input, usage->type, usage->code, value);
1342
1343         if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1344             usage->type == EV_KEY && value) {
1345                 input_sync(input);
1346                 input_event(input, usage->type, usage->code, 0);
1347         }
1348 }
1349
1350 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1351 {
1352         struct hid_input *hidinput;
1353
1354         if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1355                 return;
1356
1357         list_for_each_entry(hidinput, &hid->inputs, list)
1358                 input_sync(hidinput->input);
1359 }
1360 EXPORT_SYMBOL_GPL(hidinput_report_event);
1361
1362 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1363 {
1364         struct hid_report *report;
1365         int i, j;
1366
1367         list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1368                 for (i = 0; i < report->maxfield; i++) {
1369                         *field = report->field[i];
1370                         for (j = 0; j < (*field)->maxusage; j++)
1371                                 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1372                                         return j;
1373                 }
1374         }
1375         return -1;
1376 }
1377 EXPORT_SYMBOL_GPL(hidinput_find_field);
1378
1379 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1380 {
1381         struct hid_report *report;
1382         struct hid_field *field;
1383         int i, j;
1384
1385         list_for_each_entry(report,
1386                             &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1387                             list) {
1388                 for (i = 0; i < report->maxfield; i++) {
1389                         field = report->field[i];
1390                         for (j = 0; j < field->maxusage; j++)
1391                                 if (field->usage[j].type == EV_LED)
1392                                         return field;
1393                 }
1394         }
1395         return NULL;
1396 }
1397 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1398
1399 unsigned int hidinput_count_leds(struct hid_device *hid)
1400 {
1401         struct hid_report *report;
1402         struct hid_field *field;
1403         int i, j;
1404         unsigned int count = 0;
1405
1406         list_for_each_entry(report,
1407                             &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1408                             list) {
1409                 for (i = 0; i < report->maxfield; i++) {
1410                         field = report->field[i];
1411                         for (j = 0; j < field->maxusage; j++)
1412                                 if (field->usage[j].type == EV_LED &&
1413                                     field->value[j])
1414                                         count += 1;
1415                 }
1416         }
1417         return count;
1418 }
1419 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1420
1421 static void hidinput_led_worker(struct work_struct *work)
1422 {
1423         struct hid_device *hid = container_of(work, struct hid_device,
1424                                               led_work);
1425         struct hid_field *field;
1426         struct hid_report *report;
1427         int ret;
1428         u32 len;
1429         __u8 *buf;
1430
1431         field = hidinput_get_led_field(hid);
1432         if (!field)
1433                 return;
1434
1435         /*
1436          * field->report is accessed unlocked regarding HID core. So there might
1437          * be another incoming SET-LED request from user-space, which changes
1438          * the LED state while we assemble our outgoing buffer. However, this
1439          * doesn't matter as hid_output_report() correctly converts it into a
1440          * boolean value no matter what information is currently set on the LED
1441          * field (even garbage). So the remote device will always get a valid
1442          * request.
1443          * And in case we send a wrong value, a next led worker is spawned
1444          * for every SET-LED request so the following worker will send the
1445          * correct value, guaranteed!
1446          */
1447
1448         report = field->report;
1449
1450         /* use custom SET_REPORT request if possible (asynchronous) */
1451         if (hid->ll_driver->request)
1452                 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1453
1454         /* fall back to generic raw-output-report */
1455         len = hid_report_len(report);
1456         buf = hid_alloc_report_buf(report, GFP_KERNEL);
1457         if (!buf)
1458                 return;
1459
1460         hid_output_report(report, buf);
1461         /* synchronous output report */
1462         ret = hid_hw_output_report(hid, buf, len);
1463         if (ret == -ENOSYS)
1464                 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1465                                 HID_REQ_SET_REPORT);
1466         kfree(buf);
1467 }
1468
1469 static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1470                                 unsigned int code, int value)
1471 {
1472         struct hid_device *hid = input_get_drvdata(dev);
1473         struct hid_field *field;
1474         int offset;
1475
1476         if (type == EV_FF)
1477                 return input_ff_event(dev, type, code, value);
1478
1479         if (type != EV_LED)
1480                 return -1;
1481
1482         if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1483                 hid_warn(dev, "event field not found\n");
1484                 return -1;
1485         }
1486
1487         hid_set_field(field, offset, value);
1488
1489         schedule_work(&hid->led_work);
1490         return 0;
1491 }
1492
1493 static int hidinput_open(struct input_dev *dev)
1494 {
1495         struct hid_device *hid = input_get_drvdata(dev);
1496
1497         return hid_hw_open(hid);
1498 }
1499
1500 static void hidinput_close(struct input_dev *dev)
1501 {
1502         struct hid_device *hid = input_get_drvdata(dev);
1503
1504         hid_hw_close(hid);
1505 }
1506
1507 static void report_features(struct hid_device *hid)
1508 {
1509         struct hid_driver *drv = hid->driver;
1510         struct hid_report_enum *rep_enum;
1511         struct hid_report *rep;
1512         struct hid_usage *usage;
1513         int i, j;
1514
1515         rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1516         list_for_each_entry(rep, &rep_enum->report_list, list)
1517                 for (i = 0; i < rep->maxfield; i++) {
1518                         /* Ignore if report count is out of bounds. */
1519                         if (rep->field[i]->report_count < 1)
1520                                 continue;
1521
1522                         for (j = 0; j < rep->field[i]->maxusage; j++) {
1523                                 usage = &rep->field[i]->usage[j];
1524
1525                                 /* Verify if Battery Strength feature is available */
1526                                 if (usage->hid == HID_DC_BATTERYSTRENGTH)
1527                                         hidinput_setup_battery(hid, HID_FEATURE_REPORT,
1528                                                                rep->field[i]);
1529
1530                                 if (drv->feature_mapping)
1531                                         drv->feature_mapping(hid, rep->field[i], usage);
1532                         }
1533                 }
1534 }
1535
1536 static struct hid_input *hidinput_allocate(struct hid_device *hid,
1537                                            unsigned int application)
1538 {
1539         struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1540         struct input_dev *input_dev = input_allocate_device();
1541         const char *suffix = NULL;
1542         size_t suffix_len, name_len;
1543
1544         if (!hidinput || !input_dev)
1545                 goto fail;
1546
1547         if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&
1548             hid->maxapplication > 1) {
1549                 switch (application) {
1550                 case HID_GD_KEYBOARD:
1551                         suffix = "Keyboard";
1552                         break;
1553                 case HID_GD_KEYPAD:
1554                         suffix = "Keypad";
1555                         break;
1556                 case HID_GD_MOUSE:
1557                         suffix = "Mouse";
1558                         break;
1559                 case HID_DG_STYLUS:
1560                         suffix = "Pen";
1561                         break;
1562                 case HID_DG_TOUCHSCREEN:
1563                         suffix = "Touchscreen";
1564                         break;
1565                 case HID_DG_TOUCHPAD:
1566                         suffix = "Touchpad";
1567                         break;
1568                 case HID_GD_SYSTEM_CONTROL:
1569                         suffix = "System Control";
1570                         break;
1571                 case HID_CP_CONSUMER_CONTROL:
1572                         suffix = "Consumer Control";
1573                         break;
1574                 case HID_GD_WIRELESS_RADIO_CTLS:
1575                         suffix = "Wireless Radio Control";
1576                         break;
1577                 case HID_GD_SYSTEM_MULTIAXIS:
1578                         suffix = "System Multi Axis";
1579                         break;
1580                 default:
1581                         break;
1582                 }
1583         }
1584
1585         if (suffix) {
1586                 name_len = strlen(hid->name);
1587                 suffix_len = strlen(suffix);
1588                 if ((name_len < suffix_len) ||
1589                     strcmp(hid->name + name_len - suffix_len, suffix)) {
1590                         hidinput->name = kasprintf(GFP_KERNEL, "%s %s",
1591                                                    hid->name, suffix);
1592                         if (!hidinput->name)
1593                                 goto fail;
1594                 }
1595         }
1596
1597         input_set_drvdata(input_dev, hid);
1598         input_dev->event = hidinput_input_event;
1599         input_dev->open = hidinput_open;
1600         input_dev->close = hidinput_close;
1601         input_dev->setkeycode = hidinput_setkeycode;
1602         input_dev->getkeycode = hidinput_getkeycode;
1603
1604         input_dev->name = hidinput->name ? hidinput->name : hid->name;
1605         input_dev->phys = hid->phys;
1606         input_dev->uniq = hid->uniq;
1607         input_dev->id.bustype = hid->bus;
1608         input_dev->id.vendor  = hid->vendor;
1609         input_dev->id.product = hid->product;
1610         input_dev->id.version = hid->version;
1611         input_dev->dev.parent = &hid->dev;
1612
1613         hidinput->input = input_dev;
1614         hidinput->application = application;
1615         list_add_tail(&hidinput->list, &hid->inputs);
1616
1617         INIT_LIST_HEAD(&hidinput->reports);
1618
1619         return hidinput;
1620
1621 fail:
1622         kfree(hidinput);
1623         input_free_device(input_dev);
1624         hid_err(hid, "Out of memory during hid input probe\n");
1625         return NULL;
1626 }
1627
1628 static bool hidinput_has_been_populated(struct hid_input *hidinput)
1629 {
1630         int i;
1631         unsigned long r = 0;
1632
1633         for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
1634                 r |= hidinput->input->evbit[i];
1635
1636         for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
1637                 r |= hidinput->input->keybit[i];
1638
1639         for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
1640                 r |= hidinput->input->relbit[i];
1641
1642         for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
1643                 r |= hidinput->input->absbit[i];
1644
1645         for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
1646                 r |= hidinput->input->mscbit[i];
1647
1648         for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
1649                 r |= hidinput->input->ledbit[i];
1650
1651         for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
1652                 r |= hidinput->input->sndbit[i];
1653
1654         for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
1655                 r |= hidinput->input->ffbit[i];
1656
1657         for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
1658                 r |= hidinput->input->swbit[i];
1659
1660         return !!r;
1661 }
1662
1663 static void hidinput_cleanup_hidinput(struct hid_device *hid,
1664                 struct hid_input *hidinput)
1665 {
1666         struct hid_report *report;
1667         int i, k;
1668
1669         list_del(&hidinput->list);
1670         input_free_device(hidinput->input);
1671         kfree(hidinput->name);
1672
1673         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1674                 if (k == HID_OUTPUT_REPORT &&
1675                         hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1676                         continue;
1677
1678                 list_for_each_entry(report, &hid->report_enum[k].report_list,
1679                                     list) {
1680
1681                         for (i = 0; i < report->maxfield; i++)
1682                                 if (report->field[i]->hidinput == hidinput)
1683                                         report->field[i]->hidinput = NULL;
1684                 }
1685         }
1686
1687         kfree(hidinput);
1688 }
1689
1690 static struct hid_input *hidinput_match(struct hid_report *report)
1691 {
1692         struct hid_device *hid = report->device;
1693         struct hid_input *hidinput;
1694
1695         list_for_each_entry(hidinput, &hid->inputs, list) {
1696                 if (hidinput->report &&
1697                     hidinput->report->id == report->id)
1698                         return hidinput;
1699         }
1700
1701         return NULL;
1702 }
1703
1704 static struct hid_input *hidinput_match_application(struct hid_report *report)
1705 {
1706         struct hid_device *hid = report->device;
1707         struct hid_input *hidinput;
1708
1709         list_for_each_entry(hidinput, &hid->inputs, list) {
1710                 if (hidinput->application == report->application)
1711                         return hidinput;
1712         }
1713
1714         return NULL;
1715 }
1716
1717 static inline void hidinput_configure_usages(struct hid_input *hidinput,
1718                                              struct hid_report *report)
1719 {
1720         int i, j;
1721
1722         for (i = 0; i < report->maxfield; i++)
1723                 for (j = 0; j < report->field[i]->maxusage; j++)
1724                         hidinput_configure_usage(hidinput, report->field[i],
1725                                                  report->field[i]->usage + j);
1726 }
1727
1728 /*
1729  * Register the input device; print a message.
1730  * Configure the input layer interface
1731  * Read all reports and initialize the absolute field values.
1732  */
1733
1734 int hidinput_connect(struct hid_device *hid, unsigned int force)
1735 {
1736         struct hid_driver *drv = hid->driver;
1737         struct hid_report *report;
1738         struct hid_input *next, *hidinput = NULL;
1739         unsigned int application;
1740         int i, k;
1741
1742         INIT_LIST_HEAD(&hid->inputs);
1743         INIT_WORK(&hid->led_work, hidinput_led_worker);
1744
1745         hid->status &= ~HID_STAT_DUP_DETECTED;
1746
1747         if (!force) {
1748                 for (i = 0; i < hid->maxcollection; i++) {
1749                         struct hid_collection *col = &hid->collection[i];
1750                         if (col->type == HID_COLLECTION_APPLICATION ||
1751                                         col->type == HID_COLLECTION_PHYSICAL)
1752                                 if (IS_INPUT_APPLICATION(col->usage))
1753                                         break;
1754                 }
1755
1756                 if (i == hid->maxcollection)
1757                         return -1;
1758         }
1759
1760         report_features(hid);
1761
1762         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1763                 if (k == HID_OUTPUT_REPORT &&
1764                         hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1765                         continue;
1766
1767                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1768
1769                         if (!report->maxfield)
1770                                 continue;
1771
1772                         application = report->application;
1773
1774                         /*
1775                          * Find the previous hidinput report attached
1776                          * to this report id.
1777                          */
1778                         if (hid->quirks & HID_QUIRK_MULTI_INPUT)
1779                                 hidinput = hidinput_match(report);
1780                         else if (hid->maxapplication > 1 &&
1781                                  (hid->quirks & HID_QUIRK_INPUT_PER_APP))
1782                                 hidinput = hidinput_match_application(report);
1783
1784                         if (!hidinput) {
1785                                 hidinput = hidinput_allocate(hid, application);
1786                                 if (!hidinput)
1787                                         goto out_unwind;
1788                         }
1789
1790                         hidinput_configure_usages(hidinput, report);
1791
1792                         if (hid->quirks & HID_QUIRK_MULTI_INPUT)
1793                                 hidinput->report = report;
1794
1795                         list_add_tail(&report->hidinput_list,
1796                                       &hidinput->reports);
1797                 }
1798         }
1799
1800         list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1801                 if (drv->input_configured &&
1802                     drv->input_configured(hid, hidinput))
1803                         goto out_unwind;
1804
1805                 if (!hidinput_has_been_populated(hidinput)) {
1806                         /* no need to register an input device not populated */
1807                         hidinput_cleanup_hidinput(hid, hidinput);
1808                         continue;
1809                 }
1810
1811                 if (input_register_device(hidinput->input))
1812                         goto out_unwind;
1813                 hidinput->registered = true;
1814         }
1815
1816         if (list_empty(&hid->inputs)) {
1817                 hid_err(hid, "No inputs registered, leaving\n");
1818                 goto out_unwind;
1819         }
1820
1821         if (hid->status & HID_STAT_DUP_DETECTED)
1822                 hid_dbg(hid,
1823                         "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n");
1824
1825         return 0;
1826
1827 out_unwind:
1828         /* unwind the ones we already registered */
1829         hidinput_disconnect(hid);
1830
1831         return -1;
1832 }
1833 EXPORT_SYMBOL_GPL(hidinput_connect);
1834
1835 void hidinput_disconnect(struct hid_device *hid)
1836 {
1837         struct hid_input *hidinput, *next;
1838
1839         hidinput_cleanup_battery(hid);
1840
1841         list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1842                 list_del(&hidinput->list);
1843                 if (hidinput->registered)
1844                         input_unregister_device(hidinput->input);
1845                 else
1846                         input_free_device(hidinput->input);
1847                 kfree(hidinput->name);
1848                 kfree(hidinput);
1849         }
1850
1851         /* led_work is spawned by input_dev callbacks, but doesn't access the
1852          * parent input_dev at all. Once all input devices are removed, we
1853          * know that led_work will never get restarted, so we can cancel it
1854          * synchronously and are safe. */
1855         cancel_work_sync(&hid->led_work);
1856 }
1857 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1858