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hid-input.c
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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 <[email protected]>, 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 
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  switch (code) {
229  case ABS_X:
230  case ABS_Y:
231  case ABS_Z:
232  if (field->unit == 0x11) { /* If centimeters */
233  /* Convert to millimeters */
234  unit_exponent += 1;
235  } else if (field->unit == 0x13) { /* If inches */
236  /* Convert to millimeters */
237  prev = physical_extents;
238  physical_extents *= 254;
239  if (physical_extents < prev)
240  return 0;
241  unit_exponent -= 1;
242  } else {
243  return 0;
244  }
245  break;
246 
247  case ABS_RX:
248  case ABS_RY:
249  case ABS_RZ:
250  case ABS_TILT_X:
251  case ABS_TILT_Y:
252  if (field->unit == 0x14) { /* If degrees */
253  /* Convert to radians */
254  prev = logical_extents;
255  logical_extents *= 573;
256  if (logical_extents < prev)
257  return 0;
258  unit_exponent += 1;
259  } else if (field->unit != 0x12) { /* If not radians */
260  return 0;
261  }
262  break;
263 
264  default:
265  return 0;
266  }
267 
268  /* Apply negative unit exponent */
269  for (; unit_exponent < 0; unit_exponent++) {
270  prev = logical_extents;
271  logical_extents *= 10;
272  if (logical_extents < prev)
273  return 0;
274  }
275  /* Apply positive unit exponent */
276  for (; unit_exponent > 0; unit_exponent--) {
277  prev = physical_extents;
278  physical_extents *= 10;
279  if (physical_extents < prev)
280  return 0;
281  }
282 
283  /* Calculate resolution */
284  return logical_extents / physical_extents;
285 }
286 
287 #ifdef CONFIG_HID_BATTERY_STRENGTH
288 static enum power_supply_property hidinput_battery_props[] = {
289  POWER_SUPPLY_PROP_PRESENT,
290  POWER_SUPPLY_PROP_ONLINE,
291  POWER_SUPPLY_PROP_CAPACITY,
292  POWER_SUPPLY_PROP_MODEL_NAME,
293  POWER_SUPPLY_PROP_STATUS,
294  POWER_SUPPLY_PROP_SCOPE,
295 };
296 
297 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
298 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
299 
300 static const struct hid_device_id hid_battery_quirks[] = {
301  { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
302  USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
303  HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
304  { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
305  USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
306  HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
307  {}
308 };
309 
310 static unsigned find_battery_quirk(struct hid_device *hdev)
311 {
312  unsigned quirks = 0;
313  const struct hid_device_id *match;
314 
315  match = hid_match_id(hdev, hid_battery_quirks);
316  if (match != NULL)
317  quirks = match->driver_data;
318 
319  return quirks;
320 }
321 
322 static int hidinput_get_battery_property(struct power_supply *psy,
323  enum power_supply_property prop,
324  union power_supply_propval *val)
325 {
326  struct hid_device *dev = container_of(psy, struct hid_device, battery);
327  int ret = 0;
328  __u8 buf[2] = {};
329 
330  switch (prop) {
331  case POWER_SUPPLY_PROP_PRESENT:
332  case POWER_SUPPLY_PROP_ONLINE:
333  val->intval = 1;
334  break;
335 
336  case POWER_SUPPLY_PROP_CAPACITY:
337  ret = dev->hid_get_raw_report(dev, dev->battery_report_id,
338  buf, sizeof(buf),
339  dev->battery_report_type);
340 
341  if (ret != 2) {
342  if (ret >= 0)
343  ret = -EINVAL;
344  break;
345  }
346 
347  if (dev->battery_min < dev->battery_max &&
348  buf[1] >= dev->battery_min &&
349  buf[1] <= dev->battery_max)
350  val->intval = (100 * (buf[1] - dev->battery_min)) /
351  (dev->battery_max - dev->battery_min);
352  break;
353 
354  case POWER_SUPPLY_PROP_MODEL_NAME:
355  val->strval = dev->name;
356  break;
357 
358  case POWER_SUPPLY_PROP_STATUS:
359  val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
360  break;
361 
362  case POWER_SUPPLY_PROP_SCOPE:
363  val->intval = POWER_SUPPLY_SCOPE_DEVICE;
364  break;
365 
366  default:
367  ret = -EINVAL;
368  break;
369  }
370 
371  return ret;
372 }
373 
374 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
375 {
376  struct power_supply *battery = &dev->battery;
377  int ret;
378  unsigned quirks;
379  s32 min, max;
380 
381  if (field->usage->hid != HID_DC_BATTERYSTRENGTH)
382  return false; /* no match */
383 
384  if (battery->name != NULL)
385  goto out; /* already initialized? */
386 
387  battery->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq);
388  if (battery->name == NULL)
389  goto out;
390 
391  battery->type = POWER_SUPPLY_TYPE_BATTERY;
392  battery->properties = hidinput_battery_props;
393  battery->num_properties = ARRAY_SIZE(hidinput_battery_props);
394  battery->use_for_apm = 0;
395  battery->get_property = hidinput_get_battery_property;
396 
397  quirks = find_battery_quirk(dev);
398 
399  hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
400  dev->bus, dev->vendor, dev->product, dev->version, quirks);
401 
402  min = field->logical_minimum;
403  max = field->logical_maximum;
404 
405  if (quirks & HID_BATTERY_QUIRK_PERCENT) {
406  min = 0;
407  max = 100;
408  }
409 
410  if (quirks & HID_BATTERY_QUIRK_FEATURE)
411  report_type = HID_FEATURE_REPORT;
412 
413  dev->battery_min = min;
414  dev->battery_max = max;
415  dev->battery_report_type = report_type;
416  dev->battery_report_id = field->report->id;
417 
418  ret = power_supply_register(&dev->dev, battery);
419  if (ret != 0) {
420  hid_warn(dev, "can't register power supply: %d\n", ret);
421  kfree(battery->name);
422  battery->name = NULL;
423  }
424 
425  power_supply_powers(battery, &dev->dev);
426 
427 out:
428  return true;
429 }
430 
431 static void hidinput_cleanup_battery(struct hid_device *dev)
432 {
433  if (!dev->battery.name)
434  return;
435 
436  power_supply_unregister(&dev->battery);
437  kfree(dev->battery.name);
438  dev->battery.name = NULL;
439 }
440 #else /* !CONFIG_HID_BATTERY_STRENGTH */
441 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
442  struct hid_field *field)
443 {
444  return false;
445 }
446 
447 static void hidinput_cleanup_battery(struct hid_device *dev)
448 {
449 }
450 #endif /* CONFIG_HID_BATTERY_STRENGTH */
451 
452 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
453  struct hid_usage *usage)
454 {
455  struct input_dev *input = hidinput->input;
456  struct hid_device *device = input_get_drvdata(input);
457  int max = 0, code;
458  unsigned long *bit = NULL;
459 
460  field->hidinput = hidinput;
461 
462  if (field->flags & HID_MAIN_ITEM_CONSTANT)
463  goto ignore;
464 
465  /* only LED usages are supported in output fields */
466  if (field->report_type == HID_OUTPUT_REPORT &&
467  (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
468  goto ignore;
469  }
470 
471  if (device->driver->input_mapping) {
472  int ret = device->driver->input_mapping(device, hidinput, field,
473  usage, &bit, &max);
474  if (ret > 0)
475  goto mapped;
476  if (ret < 0)
477  goto ignore;
478  }
479 
480  switch (usage->hid & HID_USAGE_PAGE) {
481  case HID_UP_UNDEFINED:
482  goto ignore;
483 
484  case HID_UP_KEYBOARD:
485  set_bit(EV_REP, input->evbit);
486 
487  if ((usage->hid & HID_USAGE) < 256) {
488  if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
489  map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
490  } else
491  map_key(KEY_UNKNOWN);
492 
493  break;
494 
495  case HID_UP_BUTTON:
496  code = ((usage->hid - 1) & HID_USAGE);
497 
498  switch (field->application) {
499  case HID_GD_MOUSE:
500  case HID_GD_POINTER: code += BTN_MOUSE; break;
501  case HID_GD_JOYSTICK:
502  if (code <= 0xf)
503  code += BTN_JOYSTICK;
504  else
505  code += BTN_TRIGGER_HAPPY;
506  break;
507  case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
508  default:
509  switch (field->physical) {
510  case HID_GD_MOUSE:
511  case HID_GD_POINTER: code += BTN_MOUSE; break;
512  case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
513  case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
514  default: code += BTN_MISC;
515  }
516  }
517 
518  map_key(code);
519  break;
520 
521  case HID_UP_SIMULATION:
522  switch (usage->hid & 0xffff) {
523  case 0xba: map_abs(ABS_RUDDER); break;
524  case 0xbb: map_abs(ABS_THROTTLE); break;
525  case 0xc4: map_abs(ABS_GAS); break;
526  case 0xc5: map_abs(ABS_BRAKE); break;
527  case 0xc8: map_abs(ABS_WHEEL); break;
528  default: goto ignore;
529  }
530  break;
531 
532  case HID_UP_GENDESK:
533  if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
534  switch (usage->hid & 0xf) {
535  case 0x1: map_key_clear(KEY_POWER); break;
536  case 0x2: map_key_clear(KEY_SLEEP); break;
537  case 0x3: map_key_clear(KEY_WAKEUP); break;
538  case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
539  case 0x5: map_key_clear(KEY_MENU); break;
540  case 0x6: map_key_clear(KEY_PROG1); break;
541  case 0x7: map_key_clear(KEY_HELP); break;
542  case 0x8: map_key_clear(KEY_EXIT); break;
543  case 0x9: map_key_clear(KEY_SELECT); break;
544  case 0xa: map_key_clear(KEY_RIGHT); break;
545  case 0xb: map_key_clear(KEY_LEFT); break;
546  case 0xc: map_key_clear(KEY_UP); break;
547  case 0xd: map_key_clear(KEY_DOWN); break;
548  case 0xe: map_key_clear(KEY_POWER2); break;
549  case 0xf: map_key_clear(KEY_RESTART); break;
550  default: goto unknown;
551  }
552  break;
553  }
554 
555  if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
556  switch (usage->hid) {
557  case HID_GD_UP: usage->hat_dir = 1; break;
558  case HID_GD_DOWN: usage->hat_dir = 5; break;
559  case HID_GD_RIGHT: usage->hat_dir = 3; break;
560  case HID_GD_LEFT: usage->hat_dir = 7; break;
561  default: goto unknown;
562  }
563  if (field->dpad) {
564  map_abs(field->dpad);
565  goto ignore;
566  }
567  map_abs(ABS_HAT0X);
568  break;
569  }
570 
571  switch (usage->hid) {
572  /* These usage IDs map directly to the usage codes. */
573  case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
574  case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
575  case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
576  if (field->flags & HID_MAIN_ITEM_RELATIVE)
577  map_rel(usage->hid & 0xf);
578  else
579  map_abs(usage->hid & 0xf);
580  break;
581 
582  case HID_GD_HATSWITCH:
583  usage->hat_min = field->logical_minimum;
584  usage->hat_max = field->logical_maximum;
585  map_abs(ABS_HAT0X);
586  break;
587 
588  case HID_GD_START: map_key_clear(BTN_START); break;
589  case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
590 
591  default: goto unknown;
592  }
593 
594  break;
595 
596  case HID_UP_LED:
597  switch (usage->hid & 0xffff) { /* HID-Value: */
598  case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
599  case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
600  case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
601  case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
602  case 0x05: map_led (LED_KANA); break; /* "Kana" */
603  case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
604  case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
605  case 0x09: map_led (LED_MUTE); break; /* "Mute" */
606  case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
607  case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
608  case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
609 
610  default: goto ignore;
611  }
612  break;
613 
614  case HID_UP_DIGITIZER:
615  switch (usage->hid & 0xff) {
616  case 0x00: /* Undefined */
617  goto ignore;
618 
619  case 0x30: /* TipPressure */
620  if (!test_bit(BTN_TOUCH, input->keybit)) {
621  device->quirks |= HID_QUIRK_NOTOUCH;
622  set_bit(EV_KEY, input->evbit);
623  set_bit(BTN_TOUCH, input->keybit);
624  }
625  map_abs_clear(ABS_PRESSURE);
626  break;
627 
628  case 0x32: /* InRange */
629  switch (field->physical & 0xff) {
630  case 0x21: map_key(BTN_TOOL_MOUSE); break;
631  case 0x22: map_key(BTN_TOOL_FINGER); break;
632  default: map_key(BTN_TOOL_PEN); break;
633  }
634  break;
635 
636  case 0x3c: /* Invert */
637  map_key_clear(BTN_TOOL_RUBBER);
638  break;
639 
640  case 0x3d: /* X Tilt */
641  map_abs_clear(ABS_TILT_X);
642  break;
643 
644  case 0x3e: /* Y Tilt */
645  map_abs_clear(ABS_TILT_Y);
646  break;
647 
648  case 0x33: /* Touch */
649  case 0x42: /* TipSwitch */
650  case 0x43: /* TipSwitch2 */
651  device->quirks &= ~HID_QUIRK_NOTOUCH;
652  map_key_clear(BTN_TOUCH);
653  break;
654 
655  case 0x44: /* BarrelSwitch */
656  map_key_clear(BTN_STYLUS);
657  break;
658 
659  case 0x46: /* TabletPick */
660  map_key_clear(BTN_STYLUS2);
661  break;
662 
663  default: goto unknown;
664  }
665  break;
666 
667  case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
668  switch (usage->hid & HID_USAGE) {
669  case 0x000: goto ignore;
670  case 0x030: map_key_clear(KEY_POWER); break;
671  case 0x031: map_key_clear(KEY_RESTART); break;
672  case 0x032: map_key_clear(KEY_SLEEP); break;
673  case 0x034: map_key_clear(KEY_SLEEP); break;
674  case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
675  case 0x036: map_key_clear(BTN_MISC); break;
676 
677  case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
678  case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
679  case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
680  case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
681  case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
682  case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
683  case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
684  case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
685  case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
686 
687  case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
688  case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
689  case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
690  case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
691  case 0x069: map_key_clear(KEY_RED); break;
692  case 0x06a: map_key_clear(KEY_GREEN); break;
693  case 0x06b: map_key_clear(KEY_BLUE); break;
694  case 0x06c: map_key_clear(KEY_YELLOW); break;
695  case 0x06d: map_key_clear(KEY_ZOOM); break;
696 
697  case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
698  case 0x083: map_key_clear(KEY_LAST); break;
699  case 0x084: map_key_clear(KEY_ENTER); break;
700  case 0x088: map_key_clear(KEY_PC); break;
701  case 0x089: map_key_clear(KEY_TV); break;
702  case 0x08a: map_key_clear(KEY_WWW); break;
703  case 0x08b: map_key_clear(KEY_DVD); break;
704  case 0x08c: map_key_clear(KEY_PHONE); break;
705  case 0x08d: map_key_clear(KEY_PROGRAM); break;
706  case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
707  case 0x08f: map_key_clear(KEY_GAMES); break;
708  case 0x090: map_key_clear(KEY_MEMO); break;
709  case 0x091: map_key_clear(KEY_CD); break;
710  case 0x092: map_key_clear(KEY_VCR); break;
711  case 0x093: map_key_clear(KEY_TUNER); break;
712  case 0x094: map_key_clear(KEY_EXIT); break;
713  case 0x095: map_key_clear(KEY_HELP); break;
714  case 0x096: map_key_clear(KEY_TAPE); break;
715  case 0x097: map_key_clear(KEY_TV2); break;
716  case 0x098: map_key_clear(KEY_SAT); break;
717  case 0x09a: map_key_clear(KEY_PVR); break;
718 
719  case 0x09c: map_key_clear(KEY_CHANNELUP); break;
720  case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
721  case 0x0a0: map_key_clear(KEY_VCR2); break;
722 
723  case 0x0b0: map_key_clear(KEY_PLAY); break;
724  case 0x0b1: map_key_clear(KEY_PAUSE); break;
725  case 0x0b2: map_key_clear(KEY_RECORD); break;
726  case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
727  case 0x0b4: map_key_clear(KEY_REWIND); break;
728  case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
729  case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
730  case 0x0b7: map_key_clear(KEY_STOPCD); break;
731  case 0x0b8: map_key_clear(KEY_EJECTCD); break;
732  case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
733  case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
734  case 0x0bf: map_key_clear(KEY_SLOW); break;
735 
736  case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
737  case 0x0e0: map_abs_clear(ABS_VOLUME); break;
738  case 0x0e2: map_key_clear(KEY_MUTE); break;
739  case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
740  case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
741  case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
742  case 0x0f5: map_key_clear(KEY_SLOW); break;
743 
744  case 0x182: map_key_clear(KEY_BOOKMARKS); break;
745  case 0x183: map_key_clear(KEY_CONFIG); break;
746  case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
747  case 0x185: map_key_clear(KEY_EDITOR); break;
748  case 0x186: map_key_clear(KEY_SPREADSHEET); break;
749  case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
750  case 0x188: map_key_clear(KEY_PRESENTATION); break;
751  case 0x189: map_key_clear(KEY_DATABASE); break;
752  case 0x18a: map_key_clear(KEY_MAIL); break;
753  case 0x18b: map_key_clear(KEY_NEWS); break;
754  case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
755  case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
756  case 0x18e: map_key_clear(KEY_CALENDAR); break;
757  case 0x191: map_key_clear(KEY_FINANCE); break;
758  case 0x192: map_key_clear(KEY_CALC); break;
759  case 0x193: map_key_clear(KEY_PLAYER); break;
760  case 0x194: map_key_clear(KEY_FILE); break;
761  case 0x196: map_key_clear(KEY_WWW); break;
762  case 0x199: map_key_clear(KEY_CHAT); break;
763  case 0x19c: map_key_clear(KEY_LOGOFF); break;
764  case 0x19e: map_key_clear(KEY_COFFEE); break;
765  case 0x1a6: map_key_clear(KEY_HELP); break;
766  case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
767  case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
768  case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
769  case 0x1b6: map_key_clear(KEY_IMAGES); break;
770  case 0x1b7: map_key_clear(KEY_AUDIO); break;
771  case 0x1b8: map_key_clear(KEY_VIDEO); break;
772  case 0x1bc: map_key_clear(KEY_MESSENGER); break;
773  case 0x1bd: map_key_clear(KEY_INFO); break;
774  case 0x201: map_key_clear(KEY_NEW); break;
775  case 0x202: map_key_clear(KEY_OPEN); break;
776  case 0x203: map_key_clear(KEY_CLOSE); break;
777  case 0x204: map_key_clear(KEY_EXIT); break;
778  case 0x207: map_key_clear(KEY_SAVE); break;
779  case 0x208: map_key_clear(KEY_PRINT); break;
780  case 0x209: map_key_clear(KEY_PROPS); break;
781  case 0x21a: map_key_clear(KEY_UNDO); break;
782  case 0x21b: map_key_clear(KEY_COPY); break;
783  case 0x21c: map_key_clear(KEY_CUT); break;
784  case 0x21d: map_key_clear(KEY_PASTE); break;
785  case 0x21f: map_key_clear(KEY_FIND); break;
786  case 0x221: map_key_clear(KEY_SEARCH); break;
787  case 0x222: map_key_clear(KEY_GOTO); break;
788  case 0x223: map_key_clear(KEY_HOMEPAGE); break;
789  case 0x224: map_key_clear(KEY_BACK); break;
790  case 0x225: map_key_clear(KEY_FORWARD); break;
791  case 0x226: map_key_clear(KEY_STOP); break;
792  case 0x227: map_key_clear(KEY_REFRESH); break;
793  case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
794  case 0x22d: map_key_clear(KEY_ZOOMIN); break;
795  case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
796  case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
797  case 0x233: map_key_clear(KEY_SCROLLUP); break;
798  case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
799  case 0x238: map_rel(REL_HWHEEL); break;
800  case 0x23d: map_key_clear(KEY_EDIT); break;
801  case 0x25f: map_key_clear(KEY_CANCEL); break;
802  case 0x269: map_key_clear(KEY_INSERT); break;
803  case 0x26a: map_key_clear(KEY_DELETE); break;
804  case 0x279: map_key_clear(KEY_REDO); break;
805 
806  case 0x289: map_key_clear(KEY_REPLY); break;
807  case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
808  case 0x28c: map_key_clear(KEY_SEND); break;
809 
810  default: goto ignore;
811  }
812  break;
813 
814  case HID_UP_GENDEVCTRLS:
815  if (hidinput_setup_battery(device, HID_INPUT_REPORT, field))
816  goto ignore;
817  else
818  goto unknown;
819  break;
820 
821  case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
822  set_bit(EV_REP, input->evbit);
823  switch (usage->hid & HID_USAGE) {
824  case 0x021: map_key_clear(KEY_PRINT); break;
825  case 0x070: map_key_clear(KEY_HP); break;
826  case 0x071: map_key_clear(KEY_CAMERA); break;
827  case 0x072: map_key_clear(KEY_SOUND); break;
828  case 0x073: map_key_clear(KEY_QUESTION); break;
829  case 0x080: map_key_clear(KEY_EMAIL); break;
830  case 0x081: map_key_clear(KEY_CHAT); break;
831  case 0x082: map_key_clear(KEY_SEARCH); break;
832  case 0x083: map_key_clear(KEY_CONNECT); break;
833  case 0x084: map_key_clear(KEY_FINANCE); break;
834  case 0x085: map_key_clear(KEY_SPORT); break;
835  case 0x086: map_key_clear(KEY_SHOP); break;
836  default: goto ignore;
837  }
838  break;
839 
840  case HID_UP_HPVENDOR2:
841  set_bit(EV_REP, input->evbit);
842  switch (usage->hid & HID_USAGE) {
843  case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
844  case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
845  default: goto ignore;
846  }
847  break;
848 
849  case HID_UP_MSVENDOR:
850  goto ignore;
851 
852  case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
853  set_bit(EV_REP, input->evbit);
854  goto ignore;
855 
856  case HID_UP_LOGIVENDOR:
857  goto ignore;
858 
859  case HID_UP_PID:
860  switch (usage->hid & HID_USAGE) {
861  case 0xa4: map_key_clear(BTN_DEAD); break;
862  default: goto ignore;
863  }
864  break;
865 
866  default:
867  unknown:
868  if (field->report_size == 1) {
869  if (field->report->type == HID_OUTPUT_REPORT) {
870  map_led(LED_MISC);
871  break;
872  }
873  map_key(BTN_MISC);
874  break;
875  }
876  if (field->flags & HID_MAIN_ITEM_RELATIVE) {
877  map_rel(REL_MISC);
878  break;
879  }
880  map_abs(ABS_MISC);
881  break;
882  }
883 
884 mapped:
885  if (device->driver->input_mapped && device->driver->input_mapped(device,
886  hidinput, field, usage, &bit, &max) < 0)
887  goto ignore;
888 
889  set_bit(usage->type, input->evbit);
890 
891  while (usage->code <= max && test_and_set_bit(usage->code, bit))
892  usage->code = find_next_zero_bit(bit, max + 1, usage->code);
893 
894  if (usage->code > max)
895  goto ignore;
896 
897 
898  if (usage->type == EV_ABS) {
899 
900  int a = field->logical_minimum;
901  int b = field->logical_maximum;
902 
903  if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
904  a = field->logical_minimum = 0;
905  b = field->logical_maximum = 255;
906  }
907 
908  if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
909  input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
910  else input_set_abs_params(input, usage->code, a, b, 0, 0);
911 
912  input_abs_set_res(input, usage->code,
913  hidinput_calc_abs_res(field, usage->code));
914 
915  /* use a larger default input buffer for MT devices */
916  if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
917  input_set_events_per_packet(input, 60);
918  }
919 
920  if (usage->type == EV_ABS &&
921  (usage->hat_min < usage->hat_max || usage->hat_dir)) {
922  int i;
923  for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
924  input_set_abs_params(input, i, -1, 1, 0, 0);
925  set_bit(i, input->absbit);
926  }
927  if (usage->hat_dir && !field->dpad)
928  field->dpad = usage->code;
929  }
930 
931  /* for those devices which produce Consumer volume usage as relative,
932  * we emulate pressing volumeup/volumedown appropriate number of times
933  * in hidinput_hid_event()
934  */
935  if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
936  (usage->code == ABS_VOLUME)) {
937  set_bit(KEY_VOLUMEUP, input->keybit);
938  set_bit(KEY_VOLUMEDOWN, input->keybit);
939  }
940 
941  if (usage->type == EV_KEY) {
942  set_bit(EV_MSC, input->evbit);
943  set_bit(MSC_SCAN, input->mscbit);
944  }
945 
946 ignore:
947  return;
948 
949 }
950 
951 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
952 {
953  struct input_dev *input;
954  unsigned *quirks = &hid->quirks;
955 
956  if (!field->hidinput)
957  return;
958 
959  input = field->hidinput->input;
960 
961  if (!usage->type)
962  return;
963 
964  if (usage->hat_min < usage->hat_max || usage->hat_dir) {
965  int hat_dir = usage->hat_dir;
966  if (!hat_dir)
967  hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
968  if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
969  input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
970  input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
971  return;
972  }
973 
974  if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
975  *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
976  return;
977  }
978 
979  if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
980  if (value) {
981  input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
982  return;
983  }
984  input_event(input, usage->type, usage->code, 0);
985  input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
986  return;
987  }
988 
989  if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
990  int a = field->logical_minimum;
991  int b = field->logical_maximum;
992  input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
993  }
994 
995  if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
996  dbg_hid("Maximum Effects - %d\n",value);
997  return;
998  }
999 
1000  if (usage->hid == (HID_UP_PID | 0x7fUL)) {
1001  dbg_hid("PID Pool Report\n");
1002  return;
1003  }
1004 
1005  if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1006  return;
1007 
1008  if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1009  (usage->code == ABS_VOLUME)) {
1010  int count = abs(value);
1011  int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1012  int i;
1013 
1014  for (i = 0; i < count; i++) {
1015  input_event(input, EV_KEY, direction, 1);
1016  input_sync(input);
1017  input_event(input, EV_KEY, direction, 0);
1018  input_sync(input);
1019  }
1020  return;
1021  }
1022 
1023  /*
1024  * Ignore out-of-range values as per HID specification,
1025  * section 5.10 and 6.2.25
1026  */
1027  if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1028  (value < field->logical_minimum ||
1029  value > field->logical_maximum)) {
1030  dbg_hid("Ignoring out-of-range value %x\n", value);
1031  return;
1032  }
1033 
1034  /* report the usage code as scancode if the key status has changed */
1035  if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
1036  input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1037 
1038  input_event(input, usage->type, usage->code, value);
1039 
1040  if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
1041  input_event(input, usage->type, usage->code, 0);
1042 }
1043 
1044 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1045 {
1046  struct hid_input *hidinput;
1047 
1048  if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1049  return;
1050 
1051  list_for_each_entry(hidinput, &hid->inputs, list)
1052  input_sync(hidinput->input);
1053 }
1054 EXPORT_SYMBOL_GPL(hidinput_report_event);
1055 
1056 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1057 {
1058  struct hid_report *report;
1059  int i, j;
1060 
1061  list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1062  for (i = 0; i < report->maxfield; i++) {
1063  *field = report->field[i];
1064  for (j = 0; j < (*field)->maxusage; j++)
1065  if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1066  return j;
1067  }
1068  }
1069  return -1;
1070 }
1071 EXPORT_SYMBOL_GPL(hidinput_find_field);
1072 
1073 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1074 {
1075  struct hid_report *report;
1076  struct hid_field *field;
1077  int i, j;
1078 
1079  list_for_each_entry(report,
1080  &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1081  list) {
1082  for (i = 0; i < report->maxfield; i++) {
1083  field = report->field[i];
1084  for (j = 0; j < field->maxusage; j++)
1085  if (field->usage[j].type == EV_LED)
1086  return field;
1087  }
1088  }
1089  return NULL;
1090 }
1091 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1092 
1093 unsigned int hidinput_count_leds(struct hid_device *hid)
1094 {
1095  struct hid_report *report;
1096  struct hid_field *field;
1097  int i, j;
1098  unsigned int count = 0;
1099 
1100  list_for_each_entry(report,
1101  &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1102  list) {
1103  for (i = 0; i < report->maxfield; i++) {
1104  field = report->field[i];
1105  for (j = 0; j < field->maxusage; j++)
1106  if (field->usage[j].type == EV_LED &&
1107  field->value[j])
1108  count += 1;
1109  }
1110  }
1111  return count;
1112 }
1113 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1114 
1115 static int hidinput_open(struct input_dev *dev)
1116 {
1117  struct hid_device *hid = input_get_drvdata(dev);
1118 
1119  return hid_hw_open(hid);
1120 }
1121 
1122 static void hidinput_close(struct input_dev *dev)
1123 {
1124  struct hid_device *hid = input_get_drvdata(dev);
1125 
1126  hid_hw_close(hid);
1127 }
1128 
1129 static void report_features(struct hid_device *hid)
1130 {
1131  struct hid_driver *drv = hid->driver;
1132  struct hid_report_enum *rep_enum;
1133  struct hid_report *rep;
1134  int i, j;
1135 
1136  rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1137  list_for_each_entry(rep, &rep_enum->report_list, list)
1138  for (i = 0; i < rep->maxfield; i++)
1139  for (j = 0; j < rep->field[i]->maxusage; j++) {
1140  /* Verify if Battery Strength feature is available */
1141  hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);
1142 
1143  if (drv->feature_mapping)
1144  drv->feature_mapping(hid, rep->field[i],
1145  rep->field[i]->usage + j);
1146  }
1147 }
1148 
1149 /*
1150  * Register the input device; print a message.
1151  * Configure the input layer interface
1152  * Read all reports and initialize the absolute field values.
1153  */
1154 
1155 int hidinput_connect(struct hid_device *hid, unsigned int force)
1156 {
1157  struct hid_driver *drv = hid->driver;
1158  struct hid_report *report;
1159  struct hid_input *hidinput = NULL;
1160  struct input_dev *input_dev;
1161  int i, j, k;
1162 
1163  INIT_LIST_HEAD(&hid->inputs);
1164 
1165  if (!force) {
1166  for (i = 0; i < hid->maxcollection; i++) {
1167  struct hid_collection *col = &hid->collection[i];
1168  if (col->type == HID_COLLECTION_APPLICATION ||
1169  col->type == HID_COLLECTION_PHYSICAL)
1170  if (IS_INPUT_APPLICATION(col->usage))
1171  break;
1172  }
1173 
1174  if (i == hid->maxcollection)
1175  return -1;
1176  }
1177 
1178  report_features(hid);
1179 
1180  for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1181  if (k == HID_OUTPUT_REPORT &&
1182  hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1183  continue;
1184 
1185  list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1186 
1187  if (!report->maxfield)
1188  continue;
1189 
1190  if (!hidinput) {
1191  hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1192  input_dev = input_allocate_device();
1193  if (!hidinput || !input_dev) {
1194  kfree(hidinput);
1195  input_free_device(input_dev);
1196  hid_err(hid, "Out of memory during hid input probe\n");
1197  goto out_unwind;
1198  }
1199 
1200  input_set_drvdata(input_dev, hid);
1201  input_dev->event =
1202  hid->ll_driver->hidinput_input_event;
1203  input_dev->open = hidinput_open;
1204  input_dev->close = hidinput_close;
1205  input_dev->setkeycode = hidinput_setkeycode;
1206  input_dev->getkeycode = hidinput_getkeycode;
1207 
1208  input_dev->name = hid->name;
1209  input_dev->phys = hid->phys;
1210  input_dev->uniq = hid->uniq;
1211  input_dev->id.bustype = hid->bus;
1212  input_dev->id.vendor = hid->vendor;
1213  input_dev->id.product = hid->product;
1214  input_dev->id.version = hid->version;
1215  input_dev->dev.parent = hid->dev.parent;
1216  hidinput->input = input_dev;
1217  list_add_tail(&hidinput->list, &hid->inputs);
1218  }
1219 
1220  for (i = 0; i < report->maxfield; i++)
1221  for (j = 0; j < report->field[i]->maxusage; j++)
1222  hidinput_configure_usage(hidinput, report->field[i],
1223  report->field[i]->usage + j);
1224 
1225  if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
1226  /* This will leave hidinput NULL, so that it
1227  * allocates another one if we have more inputs on
1228  * the same interface. Some devices (e.g. Happ's
1229  * UGCI) cram a lot of unrelated inputs into the
1230  * same interface. */
1231  hidinput->report = report;
1232  if (drv->input_configured)
1233  drv->input_configured(hid, hidinput);
1234  if (input_register_device(hidinput->input))
1235  goto out_cleanup;
1236  hidinput = NULL;
1237  }
1238  }
1239  }
1240 
1241  if (hidinput) {
1242  if (drv->input_configured)
1243  drv->input_configured(hid, hidinput);
1244  if (input_register_device(hidinput->input))
1245  goto out_cleanup;
1246  }
1247 
1248  return 0;
1249 
1250 out_cleanup:
1251  list_del(&hidinput->list);
1252  input_free_device(hidinput->input);
1253  kfree(hidinput);
1254 out_unwind:
1255  /* unwind the ones we already registered */
1256  hidinput_disconnect(hid);
1257 
1258  return -1;
1259 }
1260 EXPORT_SYMBOL_GPL(hidinput_connect);
1261 
1262 void hidinput_disconnect(struct hid_device *hid)
1263 {
1264  struct hid_input *hidinput, *next;
1265 
1266  hidinput_cleanup_battery(hid);
1267 
1268  list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1269  list_del(&hidinput->list);
1270  input_unregister_device(hidinput->input);
1271  kfree(hidinput);
1272  }
1273 }
1274 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1275 
Generated on Thu Jan 10 2013 13:34:04 for Linux Kernel by   doxygen 1.8.2