Linux 3.2.95
[pandora-kernel.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 #define unk     KEY_UNKNOWN
36
37 static const unsigned char hid_keyboard[256] = {
38           0,  0,  0,  0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
39          50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44,  2,  3,
40           4,  5,  6,  7,  8,  9, 10, 11, 28,  1, 14, 15, 57, 12, 13, 26,
41          27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
42          65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
43         105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
44          72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
45         191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
46         115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
47         122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,
48         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
49         unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,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,unk,unk,111,unk,unk,unk,unk,unk,unk,unk,
52          29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
53         150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
54 };
55
56 static const struct {
57         __s32 x;
58         __s32 y;
59 }  hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
60
61 #define map_abs(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
62 #define map_rel(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
63 #define map_key(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
64 #define map_led(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
65
66 #define map_abs_clear(c)        hid_map_usage_clear(hidinput, usage, &bit, \
67                 &max, EV_ABS, (c))
68 #define map_key_clear(c)        hid_map_usage_clear(hidinput, usage, &bit, \
69                 &max, EV_KEY, (c))
70
71 static bool match_scancode(struct hid_usage *usage,
72                            unsigned int cur_idx, unsigned int scancode)
73 {
74         return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
75 }
76
77 static bool match_keycode(struct hid_usage *usage,
78                           unsigned int cur_idx, unsigned int keycode)
79 {
80         /*
81          * We should exclude unmapped usages when doing lookup by keycode.
82          */
83         return (usage->type == EV_KEY && usage->code == keycode);
84 }
85
86 static bool match_index(struct hid_usage *usage,
87                         unsigned int cur_idx, unsigned int idx)
88 {
89         return cur_idx == idx;
90 }
91
92 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
93                                 unsigned int cur_idx, unsigned int val);
94
95 static struct hid_usage *hidinput_find_key(struct hid_device *hid,
96                                            hid_usage_cmp_t match,
97                                            unsigned int value,
98                                            unsigned int *usage_idx)
99 {
100         unsigned int i, j, k, cur_idx = 0;
101         struct hid_report *report;
102         struct hid_usage *usage;
103
104         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
105                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
106                         for (i = 0; i < report->maxfield; i++) {
107                                 for (j = 0; j < report->field[i]->maxusage; j++) {
108                                         usage = report->field[i]->usage + j;
109                                         if (usage->type == EV_KEY || usage->type == 0) {
110                                                 if (match(usage, cur_idx, value)) {
111                                                         if (usage_idx)
112                                                                 *usage_idx = cur_idx;
113                                                         return usage;
114                                                 }
115                                                 cur_idx++;
116                                         }
117                                 }
118                         }
119                 }
120         }
121         return NULL;
122 }
123
124 static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
125                                         const struct input_keymap_entry *ke,
126                                         unsigned int *index)
127 {
128         struct hid_usage *usage;
129         unsigned int scancode;
130
131         if (ke->flags & INPUT_KEYMAP_BY_INDEX)
132                 usage = hidinput_find_key(hid, match_index, ke->index, index);
133         else if (input_scancode_to_scalar(ke, &scancode) == 0)
134                 usage = hidinput_find_key(hid, match_scancode, scancode, index);
135         else
136                 usage = NULL;
137
138         return usage;
139 }
140
141 static int hidinput_getkeycode(struct input_dev *dev,
142                                struct input_keymap_entry *ke)
143 {
144         struct hid_device *hid = input_get_drvdata(dev);
145         struct hid_usage *usage;
146         unsigned int scancode, index;
147
148         usage = hidinput_locate_usage(hid, ke, &index);
149         if (usage) {
150                 ke->keycode = usage->type == EV_KEY ?
151                                 usage->code : KEY_RESERVED;
152                 ke->index = index;
153                 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
154                 ke->len = sizeof(scancode);
155                 memcpy(ke->scancode, &scancode, sizeof(scancode));
156                 return 0;
157         }
158
159         return -EINVAL;
160 }
161
162 static int hidinput_setkeycode(struct input_dev *dev,
163                                const struct input_keymap_entry *ke,
164                                unsigned int *old_keycode)
165 {
166         struct hid_device *hid = input_get_drvdata(dev);
167         struct hid_usage *usage;
168
169         usage = hidinput_locate_usage(hid, ke, NULL);
170         if (usage) {
171                 *old_keycode = usage->type == EV_KEY ?
172                                 usage->code : KEY_RESERVED;
173                 usage->code = ke->keycode;
174
175                 clear_bit(*old_keycode, dev->keybit);
176                 set_bit(usage->code, dev->keybit);
177                 dbg_hid("Assigned keycode %d to HID usage code %x\n",
178                         usage->code, usage->hid);
179
180                 /*
181                  * Set the keybit for the old keycode if the old keycode is used
182                  * by another key
183                  */
184                 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
185                         set_bit(*old_keycode, dev->keybit);
186
187                 return 0;
188         }
189
190         return -EINVAL;
191 }
192
193
194 /**
195  * hidinput_calc_abs_res - calculate an absolute axis resolution
196  * @field: the HID report field to calculate resolution for
197  * @code: axis code
198  *
199  * The formula is:
200  *                         (logical_maximum - logical_minimum)
201  * resolution = ----------------------------------------------------------
202  *              (physical_maximum - physical_minimum) * 10 ^ unit_exponent
203  *
204  * as seen in the HID specification v1.11 6.2.2.7 Global Items.
205  *
206  * Only exponent 1 length units are processed. Centimeters and inches are
207  * converted to millimeters. Degrees are converted to radians.
208  */
209 static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
210 {
211         __s32 unit_exponent = field->unit_exponent;
212         __s32 logical_extents = field->logical_maximum -
213                                         field->logical_minimum;
214         __s32 physical_extents = field->physical_maximum -
215                                         field->physical_minimum;
216         __s32 prev;
217
218         /* Check if the extents are sane */
219         if (logical_extents <= 0 || physical_extents <= 0)
220                 return 0;
221
222         /*
223          * Verify and convert units.
224          * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
225          */
226         if (code == ABS_X || code == ABS_Y || code == ABS_Z) {
227                 if (field->unit == 0x11) {              /* If centimeters */
228                         /* Convert to millimeters */
229                         unit_exponent += 1;
230                 } else if (field->unit == 0x13) {       /* If inches */
231                         /* Convert to millimeters */
232                         prev = physical_extents;
233                         physical_extents *= 254;
234                         if (physical_extents < prev)
235                                 return 0;
236                         unit_exponent -= 1;
237                 } else {
238                         return 0;
239                 }
240         } else if (code == ABS_RX || code == ABS_RY || code == ABS_RZ) {
241                 if (field->unit == 0x14) {              /* If degrees */
242                         /* Convert to radians */
243                         prev = logical_extents;
244                         logical_extents *= 573;
245                         if (logical_extents < prev)
246                                 return 0;
247                         unit_exponent += 1;
248                 } else if (field->unit != 0x12) {       /* If not radians */
249                         return 0;
250                 }
251         } else {
252                 return 0;
253         }
254
255         /* Apply negative unit exponent */
256         for (; unit_exponent < 0; unit_exponent++) {
257                 prev = logical_extents;
258                 logical_extents *= 10;
259                 if (logical_extents < prev)
260                         return 0;
261         }
262         /* Apply positive unit exponent */
263         for (; unit_exponent > 0; unit_exponent--) {
264                 prev = physical_extents;
265                 physical_extents *= 10;
266                 if (physical_extents < prev)
267                         return 0;
268         }
269
270         /* Calculate resolution */
271         return logical_extents / physical_extents;
272 }
273
274 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
275                                      struct hid_usage *usage)
276 {
277         struct input_dev *input = hidinput->input;
278         struct hid_device *device = input_get_drvdata(input);
279         int max = 0, code;
280         unsigned long *bit = NULL;
281
282         field->hidinput = hidinput;
283
284         if (field->flags & HID_MAIN_ITEM_CONSTANT)
285                 goto ignore;
286
287         /* Ignore if report count is out of bounds. */
288         if (field->report_count < 1)
289                 goto ignore;
290
291         /* only LED usages are supported in output fields */
292         if (field->report_type == HID_OUTPUT_REPORT &&
293                         (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
294                 goto ignore;
295         }
296
297         if (device->driver->input_mapping) {
298                 int ret = device->driver->input_mapping(device, hidinput, field,
299                                 usage, &bit, &max);
300                 if (ret > 0)
301                         goto mapped;
302                 if (ret < 0)
303                         goto ignore;
304         }
305
306         switch (usage->hid & HID_USAGE_PAGE) {
307         case HID_UP_UNDEFINED:
308                 goto ignore;
309
310         case HID_UP_KEYBOARD:
311                 set_bit(EV_REP, input->evbit);
312
313                 if ((usage->hid & HID_USAGE) < 256) {
314                         if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
315                         map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
316                 } else
317                         map_key(KEY_UNKNOWN);
318
319                 break;
320
321         case HID_UP_BUTTON:
322                 code = ((usage->hid - 1) & HID_USAGE);
323
324                 switch (field->application) {
325                 case HID_GD_MOUSE:
326                 case HID_GD_POINTER:  code += BTN_MOUSE; break;
327                 case HID_GD_JOYSTICK:
328                                 if (code <= 0xf)
329                                         code += BTN_JOYSTICK;
330                                 else
331                                         code += BTN_TRIGGER_HAPPY;
332                                 break;
333                 case HID_GD_GAMEPAD:  code += BTN_GAMEPAD; break;
334                 default:
335                         switch (field->physical) {
336                         case HID_GD_MOUSE:
337                         case HID_GD_POINTER:  code += BTN_MOUSE; break;
338                         case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
339                         case HID_GD_GAMEPAD:  code += BTN_GAMEPAD; break;
340                         default:              code += BTN_MISC;
341                         }
342                 }
343
344                 map_key(code);
345                 break;
346
347         case HID_UP_SIMULATION:
348                 switch (usage->hid & 0xffff) {
349                 case 0xba: map_abs(ABS_RUDDER);   break;
350                 case 0xbb: map_abs(ABS_THROTTLE); break;
351                 case 0xc4: map_abs(ABS_GAS);      break;
352                 case 0xc5: map_abs(ABS_BRAKE);    break;
353                 case 0xc8: map_abs(ABS_WHEEL);    break;
354                 default:   goto ignore;
355                 }
356                 break;
357
358         case HID_UP_GENDESK:
359                 if ((usage->hid & 0xf0) == 0x80) {      /* SystemControl */
360                         switch (usage->hid & 0xf) {
361                         case 0x1: map_key_clear(KEY_POWER);  break;
362                         case 0x2: map_key_clear(KEY_SLEEP);  break;
363                         case 0x3: map_key_clear(KEY_WAKEUP); break;
364                         case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
365                         case 0x5: map_key_clear(KEY_MENU); break;
366                         case 0x6: map_key_clear(KEY_PROG1); break;
367                         case 0x7: map_key_clear(KEY_HELP); break;
368                         case 0x8: map_key_clear(KEY_EXIT); break;
369                         case 0x9: map_key_clear(KEY_SELECT); break;
370                         case 0xa: map_key_clear(KEY_RIGHT); break;
371                         case 0xb: map_key_clear(KEY_LEFT); break;
372                         case 0xc: map_key_clear(KEY_UP); break;
373                         case 0xd: map_key_clear(KEY_DOWN); break;
374                         case 0xe: map_key_clear(KEY_POWER2); break;
375                         case 0xf: map_key_clear(KEY_RESTART); break;
376                         default: goto unknown;
377                         }
378                         break;
379                 }
380
381                 if ((usage->hid & 0xf0) == 0x90) {      /* D-pad */
382                         switch (usage->hid) {
383                         case HID_GD_UP:    usage->hat_dir = 1; break;
384                         case HID_GD_DOWN:  usage->hat_dir = 5; break;
385                         case HID_GD_RIGHT: usage->hat_dir = 3; break;
386                         case HID_GD_LEFT:  usage->hat_dir = 7; break;
387                         default: goto unknown;
388                         }
389                         if (field->dpad) {
390                                 map_abs(field->dpad);
391                                 goto ignore;
392                         }
393                         map_abs(ABS_HAT0X);
394                         break;
395                 }
396
397                 switch (usage->hid) {
398                 /* These usage IDs map directly to the usage codes. */
399                 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
400                 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
401                 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
402                         if (field->flags & HID_MAIN_ITEM_RELATIVE)
403                                 map_rel(usage->hid & 0xf);
404                         else
405                                 map_abs(usage->hid & 0xf);
406                         break;
407
408                 case HID_GD_HATSWITCH:
409                         usage->hat_min = field->logical_minimum;
410                         usage->hat_max = field->logical_maximum;
411                         map_abs(ABS_HAT0X);
412                         break;
413
414                 case HID_GD_START:      map_key_clear(BTN_START);       break;
415                 case HID_GD_SELECT:     map_key_clear(BTN_SELECT);      break;
416
417                 default: goto unknown;
418                 }
419
420                 break;
421
422         case HID_UP_LED:
423                 switch (usage->hid & 0xffff) {                /* HID-Value:                   */
424                 case 0x01:  map_led (LED_NUML);     break;    /*   "Num Lock"                 */
425                 case 0x02:  map_led (LED_CAPSL);    break;    /*   "Caps Lock"                */
426                 case 0x03:  map_led (LED_SCROLLL);  break;    /*   "Scroll Lock"              */
427                 case 0x04:  map_led (LED_COMPOSE);  break;    /*   "Compose"                  */
428                 case 0x05:  map_led (LED_KANA);     break;    /*   "Kana"                     */
429                 case 0x27:  map_led (LED_SLEEP);    break;    /*   "Stand-By"                 */
430                 case 0x4c:  map_led (LED_SUSPEND);  break;    /*   "System Suspend"           */
431                 case 0x09:  map_led (LED_MUTE);     break;    /*   "Mute"                     */
432                 case 0x4b:  map_led (LED_MISC);     break;    /*   "Generic Indicator"        */
433                 case 0x19:  map_led (LED_MAIL);     break;    /*   "Message Waiting"          */
434                 case 0x4d:  map_led (LED_CHARGING); break;    /*   "External Power Connected" */
435
436                 default: goto ignore;
437                 }
438                 break;
439
440         case HID_UP_DIGITIZER:
441                 switch (usage->hid & 0xff) {
442                 case 0x00: /* Undefined */
443                         goto ignore;
444
445                 case 0x30: /* TipPressure */
446                         if (!test_bit(BTN_TOUCH, input->keybit)) {
447                                 device->quirks |= HID_QUIRK_NOTOUCH;
448                                 set_bit(EV_KEY, input->evbit);
449                                 set_bit(BTN_TOUCH, input->keybit);
450                         }
451                         map_abs_clear(ABS_PRESSURE);
452                         break;
453
454                 case 0x32: /* InRange */
455                         switch (field->physical & 0xff) {
456                         case 0x21: map_key(BTN_TOOL_MOUSE); break;
457                         case 0x22: map_key(BTN_TOOL_FINGER); break;
458                         default: map_key(BTN_TOOL_PEN); break;
459                         }
460                         break;
461
462                 case 0x3c: /* Invert */
463                         map_key_clear(BTN_TOOL_RUBBER);
464                         break;
465
466                 case 0x33: /* Touch */
467                 case 0x42: /* TipSwitch */
468                 case 0x43: /* TipSwitch2 */
469                         device->quirks &= ~HID_QUIRK_NOTOUCH;
470                         map_key_clear(BTN_TOUCH);
471                         break;
472
473                 case 0x44: /* BarrelSwitch */
474                         map_key_clear(BTN_STYLUS);
475                         break;
476
477                 case 0x46: /* TabletPick */
478                         map_key_clear(BTN_STYLUS2);
479                         break;
480
481                 case 0x51: /* ContactID */
482                         device->quirks |= HID_QUIRK_MULTITOUCH;
483                         goto unknown;
484
485                 default:  goto unknown;
486                 }
487                 break;
488
489         case HID_UP_CONSUMER:   /* USB HUT v1.12, pages 75-84 */
490                 switch (usage->hid & HID_USAGE) {
491                 case 0x000: goto ignore;
492                 case 0x030: map_key_clear(KEY_POWER);           break;
493                 case 0x031: map_key_clear(KEY_RESTART);         break;
494                 case 0x032: map_key_clear(KEY_SLEEP);           break;
495                 case 0x034: map_key_clear(KEY_SLEEP);           break;
496                 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE);  break;
497                 case 0x036: map_key_clear(BTN_MISC);            break;
498
499                 case 0x040: map_key_clear(KEY_MENU);            break; /* Menu */
500                 case 0x041: map_key_clear(KEY_SELECT);          break; /* Menu Pick */
501                 case 0x042: map_key_clear(KEY_UP);              break; /* Menu Up */
502                 case 0x043: map_key_clear(KEY_DOWN);            break; /* Menu Down */
503                 case 0x044: map_key_clear(KEY_LEFT);            break; /* Menu Left */
504                 case 0x045: map_key_clear(KEY_RIGHT);           break; /* Menu Right */
505                 case 0x046: map_key_clear(KEY_ESC);             break; /* Menu Escape */
506                 case 0x047: map_key_clear(KEY_KPPLUS);          break; /* Menu Value Increase */
507                 case 0x048: map_key_clear(KEY_KPMINUS);         break; /* Menu Value Decrease */
508
509                 case 0x060: map_key_clear(KEY_INFO);            break; /* Data On Screen */
510                 case 0x061: map_key_clear(KEY_SUBTITLE);        break; /* Closed Caption */
511                 case 0x063: map_key_clear(KEY_VCR);             break; /* VCR/TV */
512                 case 0x065: map_key_clear(KEY_CAMERA);          break; /* Snapshot */
513                 case 0x069: map_key_clear(KEY_RED);             break;
514                 case 0x06a: map_key_clear(KEY_GREEN);           break;
515                 case 0x06b: map_key_clear(KEY_BLUE);            break;
516                 case 0x06c: map_key_clear(KEY_YELLOW);          break;
517                 case 0x06d: map_key_clear(KEY_ZOOM);            break;
518
519                 case 0x082: map_key_clear(KEY_VIDEO_NEXT);      break;
520                 case 0x083: map_key_clear(KEY_LAST);            break;
521                 case 0x084: map_key_clear(KEY_ENTER);           break;
522                 case 0x088: map_key_clear(KEY_PC);              break;
523                 case 0x089: map_key_clear(KEY_TV);              break;
524                 case 0x08a: map_key_clear(KEY_WWW);             break;
525                 case 0x08b: map_key_clear(KEY_DVD);             break;
526                 case 0x08c: map_key_clear(KEY_PHONE);           break;
527                 case 0x08d: map_key_clear(KEY_PROGRAM);         break;
528                 case 0x08e: map_key_clear(KEY_VIDEOPHONE);      break;
529                 case 0x08f: map_key_clear(KEY_GAMES);           break;
530                 case 0x090: map_key_clear(KEY_MEMO);            break;
531                 case 0x091: map_key_clear(KEY_CD);              break;
532                 case 0x092: map_key_clear(KEY_VCR);             break;
533                 case 0x093: map_key_clear(KEY_TUNER);           break;
534                 case 0x094: map_key_clear(KEY_EXIT);            break;
535                 case 0x095: map_key_clear(KEY_HELP);            break;
536                 case 0x096: map_key_clear(KEY_TAPE);            break;
537                 case 0x097: map_key_clear(KEY_TV2);             break;
538                 case 0x098: map_key_clear(KEY_SAT);             break;
539                 case 0x09a: map_key_clear(KEY_PVR);             break;
540
541                 case 0x09c: map_key_clear(KEY_CHANNELUP);       break;
542                 case 0x09d: map_key_clear(KEY_CHANNELDOWN);     break;
543                 case 0x0a0: map_key_clear(KEY_VCR2);            break;
544
545                 case 0x0b0: map_key_clear(KEY_PLAY);            break;
546                 case 0x0b1: map_key_clear(KEY_PAUSE);           break;
547                 case 0x0b2: map_key_clear(KEY_RECORD);          break;
548                 case 0x0b3: map_key_clear(KEY_FASTFORWARD);     break;
549                 case 0x0b4: map_key_clear(KEY_REWIND);          break;
550                 case 0x0b5: map_key_clear(KEY_NEXTSONG);        break;
551                 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG);    break;
552                 case 0x0b7: map_key_clear(KEY_STOPCD);          break;
553                 case 0x0b8: map_key_clear(KEY_EJECTCD);         break;
554                 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT);    break;
555                 case 0x0b9: map_key_clear(KEY_SHUFFLE);         break;
556                 case 0x0bf: map_key_clear(KEY_SLOW);            break;
557
558                 case 0x0cd: map_key_clear(KEY_PLAYPAUSE);       break;
559                 case 0x0e0: map_abs_clear(ABS_VOLUME);          break;
560                 case 0x0e2: map_key_clear(KEY_MUTE);            break;
561                 case 0x0e5: map_key_clear(KEY_BASSBOOST);       break;
562                 case 0x0e9: map_key_clear(KEY_VOLUMEUP);        break;
563                 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN);      break;
564                 case 0x0f5: map_key_clear(KEY_SLOW);            break;
565
566                 case 0x182: map_key_clear(KEY_BOOKMARKS);       break;
567                 case 0x183: map_key_clear(KEY_CONFIG);          break;
568                 case 0x184: map_key_clear(KEY_WORDPROCESSOR);   break;
569                 case 0x185: map_key_clear(KEY_EDITOR);          break;
570                 case 0x186: map_key_clear(KEY_SPREADSHEET);     break;
571                 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR);  break;
572                 case 0x188: map_key_clear(KEY_PRESENTATION);    break;
573                 case 0x189: map_key_clear(KEY_DATABASE);        break;
574                 case 0x18a: map_key_clear(KEY_MAIL);            break;
575                 case 0x18b: map_key_clear(KEY_NEWS);            break;
576                 case 0x18c: map_key_clear(KEY_VOICEMAIL);       break;
577                 case 0x18d: map_key_clear(KEY_ADDRESSBOOK);     break;
578                 case 0x18e: map_key_clear(KEY_CALENDAR);        break;
579                 case 0x191: map_key_clear(KEY_FINANCE);         break;
580                 case 0x192: map_key_clear(KEY_CALC);            break;
581                 case 0x193: map_key_clear(KEY_PLAYER);          break;
582                 case 0x194: map_key_clear(KEY_FILE);            break;
583                 case 0x196: map_key_clear(KEY_WWW);             break;
584                 case 0x199: map_key_clear(KEY_CHAT);            break;
585                 case 0x19c: map_key_clear(KEY_LOGOFF);          break;
586                 case 0x19e: map_key_clear(KEY_COFFEE);          break;
587                 case 0x1a6: map_key_clear(KEY_HELP);            break;
588                 case 0x1a7: map_key_clear(KEY_DOCUMENTS);       break;
589                 case 0x1ab: map_key_clear(KEY_SPELLCHECK);      break;
590                 case 0x1ae: map_key_clear(KEY_KEYBOARD);        break;
591                 case 0x1b6: map_key_clear(KEY_IMAGES);          break;
592                 case 0x1b7: map_key_clear(KEY_AUDIO);           break;
593                 case 0x1b8: map_key_clear(KEY_VIDEO);           break;
594                 case 0x1bc: map_key_clear(KEY_MESSENGER);       break;
595                 case 0x1bd: map_key_clear(KEY_INFO);            break;
596                 case 0x201: map_key_clear(KEY_NEW);             break;
597                 case 0x202: map_key_clear(KEY_OPEN);            break;
598                 case 0x203: map_key_clear(KEY_CLOSE);           break;
599                 case 0x204: map_key_clear(KEY_EXIT);            break;
600                 case 0x207: map_key_clear(KEY_SAVE);            break;
601                 case 0x208: map_key_clear(KEY_PRINT);           break;
602                 case 0x209: map_key_clear(KEY_PROPS);           break;
603                 case 0x21a: map_key_clear(KEY_UNDO);            break;
604                 case 0x21b: map_key_clear(KEY_COPY);            break;
605                 case 0x21c: map_key_clear(KEY_CUT);             break;
606                 case 0x21d: map_key_clear(KEY_PASTE);           break;
607                 case 0x21f: map_key_clear(KEY_FIND);            break;
608                 case 0x221: map_key_clear(KEY_SEARCH);          break;
609                 case 0x222: map_key_clear(KEY_GOTO);            break;
610                 case 0x223: map_key_clear(KEY_HOMEPAGE);        break;
611                 case 0x224: map_key_clear(KEY_BACK);            break;
612                 case 0x225: map_key_clear(KEY_FORWARD);         break;
613                 case 0x226: map_key_clear(KEY_STOP);            break;
614                 case 0x227: map_key_clear(KEY_REFRESH);         break;
615                 case 0x22a: map_key_clear(KEY_BOOKMARKS);       break;
616                 case 0x22d: map_key_clear(KEY_ZOOMIN);          break;
617                 case 0x22e: map_key_clear(KEY_ZOOMOUT);         break;
618                 case 0x22f: map_key_clear(KEY_ZOOMRESET);       break;
619                 case 0x233: map_key_clear(KEY_SCROLLUP);        break;
620                 case 0x234: map_key_clear(KEY_SCROLLDOWN);      break;
621                 case 0x238: map_rel(REL_HWHEEL);                break;
622                 case 0x23d: map_key_clear(KEY_EDIT);            break;
623                 case 0x25f: map_key_clear(KEY_CANCEL);          break;
624                 case 0x269: map_key_clear(KEY_INSERT);          break;
625                 case 0x26a: map_key_clear(KEY_DELETE);          break;
626                 case 0x279: map_key_clear(KEY_REDO);            break;
627
628                 case 0x289: map_key_clear(KEY_REPLY);           break;
629                 case 0x28b: map_key_clear(KEY_FORWARDMAIL);     break;
630                 case 0x28c: map_key_clear(KEY_SEND);            break;
631
632                 default:    goto ignore;
633                 }
634                 break;
635
636         case HID_UP_HPVENDOR:   /* Reported on a Dutch layout HP5308 */
637                 set_bit(EV_REP, input->evbit);
638                 switch (usage->hid & HID_USAGE) {
639                 case 0x021: map_key_clear(KEY_PRINT);           break;
640                 case 0x070: map_key_clear(KEY_HP);              break;
641                 case 0x071: map_key_clear(KEY_CAMERA);          break;
642                 case 0x072: map_key_clear(KEY_SOUND);           break;
643                 case 0x073: map_key_clear(KEY_QUESTION);        break;
644                 case 0x080: map_key_clear(KEY_EMAIL);           break;
645                 case 0x081: map_key_clear(KEY_CHAT);            break;
646                 case 0x082: map_key_clear(KEY_SEARCH);          break;
647                 case 0x083: map_key_clear(KEY_CONNECT);         break;
648                 case 0x084: map_key_clear(KEY_FINANCE);         break;
649                 case 0x085: map_key_clear(KEY_SPORT);           break;
650                 case 0x086: map_key_clear(KEY_SHOP);            break;
651                 default:    goto ignore;
652                 }
653                 break;
654
655         case HID_UP_MSVENDOR:
656                 goto ignore;
657
658         case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
659                 set_bit(EV_REP, input->evbit);
660                 goto ignore;
661
662         case HID_UP_LOGIVENDOR:
663                 goto ignore;
664
665         case HID_UP_PID:
666                 switch (usage->hid & HID_USAGE) {
667                 case 0xa4: map_key_clear(BTN_DEAD);     break;
668                 default: goto ignore;
669                 }
670                 break;
671
672         default:
673         unknown:
674                 if (field->report_size == 1) {
675                         if (field->report->type == HID_OUTPUT_REPORT) {
676                                 map_led(LED_MISC);
677                                 break;
678                         }
679                         map_key(BTN_MISC);
680                         break;
681                 }
682                 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
683                         map_rel(REL_MISC);
684                         break;
685                 }
686                 map_abs(ABS_MISC);
687                 break;
688         }
689
690 mapped:
691         if (device->driver->input_mapped && device->driver->input_mapped(device,
692                                 hidinput, field, usage, &bit, &max) < 0)
693                 goto ignore;
694
695         set_bit(usage->type, input->evbit);
696
697         while (usage->code <= max && test_and_set_bit(usage->code, bit))
698                 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
699
700         if (usage->code > max)
701                 goto ignore;
702
703
704         if (usage->type == EV_ABS) {
705
706                 int a = field->logical_minimum;
707                 int b = field->logical_maximum;
708
709                 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
710                         a = field->logical_minimum = 0;
711                         b = field->logical_maximum = 255;
712                 }
713
714                 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
715                         input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
716                 else    input_set_abs_params(input, usage->code, a, b, 0, 0);
717
718                 input_abs_set_res(input, usage->code,
719                                   hidinput_calc_abs_res(field, usage->code));
720
721                 /* use a larger default input buffer for MT devices */
722                 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
723                         input_set_events_per_packet(input, 60);
724         }
725
726         if (usage->type == EV_ABS &&
727             (usage->hat_min < usage->hat_max || usage->hat_dir)) {
728                 int i;
729                 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
730                         input_set_abs_params(input, i, -1, 1, 0, 0);
731                         set_bit(i, input->absbit);
732                 }
733                 if (usage->hat_dir && !field->dpad)
734                         field->dpad = usage->code;
735         }
736
737         /* for those devices which produce Consumer volume usage as relative,
738          * we emulate pressing volumeup/volumedown appropriate number of times
739          * in hidinput_hid_event()
740          */
741         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
742                         (usage->code == ABS_VOLUME)) {
743                 set_bit(KEY_VOLUMEUP, input->keybit);
744                 set_bit(KEY_VOLUMEDOWN, input->keybit);
745         }
746
747         if (usage->type == EV_KEY) {
748                 set_bit(EV_MSC, input->evbit);
749                 set_bit(MSC_SCAN, input->mscbit);
750         }
751
752 ignore:
753         return;
754
755 }
756
757 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
758 {
759         struct input_dev *input;
760         unsigned *quirks = &hid->quirks;
761
762         if (!field->hidinput)
763                 return;
764
765         input = field->hidinput->input;
766
767         if (!usage->type)
768                 return;
769
770         if (usage->hat_min < usage->hat_max || usage->hat_dir) {
771                 int hat_dir = usage->hat_dir;
772                 if (!hat_dir)
773                         hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
774                 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
775                 input_event(input, usage->type, usage->code    , hid_hat_to_axis[hat_dir].x);
776                 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
777                 return;
778         }
779
780         if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
781                 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
782                 return;
783         }
784
785         if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
786                 if (value) {
787                         input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
788                         return;
789                 }
790                 input_event(input, usage->type, usage->code, 0);
791                 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
792                 return;
793         }
794
795         if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
796                 int a = field->logical_minimum;
797                 int b = field->logical_maximum;
798                 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
799         }
800
801         if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
802                 dbg_hid("Maximum Effects - %d\n",value);
803                 return;
804         }
805
806         if (usage->hid == (HID_UP_PID | 0x7fUL)) {
807                 dbg_hid("PID Pool Report\n");
808                 return;
809         }
810
811         if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
812                 return;
813
814         if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
815                         (usage->code == ABS_VOLUME)) {
816                 int count = abs(value);
817                 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
818                 int i;
819
820                 for (i = 0; i < count; i++) {
821                         input_event(input, EV_KEY, direction, 1);
822                         input_sync(input);
823                         input_event(input, EV_KEY, direction, 0);
824                         input_sync(input);
825                 }
826                 return;
827         }
828
829         /* report the usage code as scancode if the key status has changed */
830         if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
831                 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
832
833         input_event(input, usage->type, usage->code, value);
834
835         if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
836                 input_event(input, usage->type, usage->code, 0);
837 }
838
839 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
840 {
841         struct hid_input *hidinput;
842
843         if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
844                 return;
845
846         list_for_each_entry(hidinput, &hid->inputs, list)
847                 input_sync(hidinput->input);
848 }
849 EXPORT_SYMBOL_GPL(hidinput_report_event);
850
851 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
852 {
853         struct hid_report *report;
854         int i, j;
855
856         list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
857                 for (i = 0; i < report->maxfield; i++) {
858                         *field = report->field[i];
859                         for (j = 0; j < (*field)->maxusage; j++)
860                                 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
861                                         return j;
862                 }
863         }
864         return -1;
865 }
866 EXPORT_SYMBOL_GPL(hidinput_find_field);
867
868 static int hidinput_open(struct input_dev *dev)
869 {
870         struct hid_device *hid = input_get_drvdata(dev);
871
872         return hid_hw_open(hid);
873 }
874
875 static void hidinput_close(struct input_dev *dev)
876 {
877         struct hid_device *hid = input_get_drvdata(dev);
878
879         hid_hw_close(hid);
880 }
881
882 static void report_features(struct hid_device *hid)
883 {
884         struct hid_driver *drv = hid->driver;
885         struct hid_report_enum *rep_enum;
886         struct hid_report *rep;
887         int i, j;
888
889         if (!drv->feature_mapping)
890                 return;
891
892         rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
893         list_for_each_entry(rep, &rep_enum->report_list, list)
894                 for (i = 0; i < rep->maxfield; i++) {
895                         /* Ignore if report count is out of bounds. */
896                         if (rep->field[i]->report_count < 1)
897                                 continue;
898
899                         for (j = 0; j < rep->field[i]->maxusage; j++)
900                                 drv->feature_mapping(hid, rep->field[i],
901                                                      rep->field[i]->usage + j);
902                 }
903 }
904
905 /*
906  * Register the input device; print a message.
907  * Configure the input layer interface
908  * Read all reports and initialize the absolute field values.
909  */
910
911 int hidinput_connect(struct hid_device *hid, unsigned int force)
912 {
913         struct hid_report *report;
914         struct hid_input *hidinput = NULL;
915         struct input_dev *input_dev;
916         int i, j, k;
917
918         INIT_LIST_HEAD(&hid->inputs);
919
920         if (!force) {
921                 for (i = 0; i < hid->maxcollection; i++) {
922                         struct hid_collection *col = &hid->collection[i];
923                         if (col->type == HID_COLLECTION_APPLICATION ||
924                                         col->type == HID_COLLECTION_PHYSICAL)
925                                 if (IS_INPUT_APPLICATION(col->usage))
926                                         break;
927                 }
928
929                 if (i == hid->maxcollection)
930                         return -1;
931         }
932
933         report_features(hid);
934
935         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
936                 if (k == HID_OUTPUT_REPORT &&
937                         hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
938                         continue;
939
940                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
941
942                         if (!report->maxfield)
943                                 continue;
944
945                         if (!hidinput) {
946                                 hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
947                                 input_dev = input_allocate_device();
948                                 if (!hidinput || !input_dev) {
949                                         kfree(hidinput);
950                                         input_free_device(input_dev);
951                                         hid_err(hid, "Out of memory during hid input probe\n");
952                                         goto out_unwind;
953                                 }
954
955                                 input_set_drvdata(input_dev, hid);
956                                 input_dev->event =
957                                         hid->ll_driver->hidinput_input_event;
958                                 input_dev->open = hidinput_open;
959                                 input_dev->close = hidinput_close;
960                                 input_dev->setkeycode = hidinput_setkeycode;
961                                 input_dev->getkeycode = hidinput_getkeycode;
962
963                                 input_dev->name = hid->name;
964                                 input_dev->phys = hid->phys;
965                                 input_dev->uniq = hid->uniq;
966                                 input_dev->id.bustype = hid->bus;
967                                 input_dev->id.vendor  = hid->vendor;
968                                 input_dev->id.product = hid->product;
969                                 input_dev->id.version = hid->version;
970                                 input_dev->dev.parent = hid->dev.parent;
971                                 hidinput->input = input_dev;
972                                 list_add_tail(&hidinput->list, &hid->inputs);
973                         }
974
975                         for (i = 0; i < report->maxfield; i++)
976                                 for (j = 0; j < report->field[i]->maxusage; j++)
977                                         hidinput_configure_usage(hidinput, report->field[i],
978                                                                  report->field[i]->usage + j);
979
980                         if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
981                                 /* This will leave hidinput NULL, so that it
982                                  * allocates another one if we have more inputs on
983                                  * the same interface. Some devices (e.g. Happ's
984                                  * UGCI) cram a lot of unrelated inputs into the
985                                  * same interface. */
986                                 hidinput->report = report;
987                                 if (input_register_device(hidinput->input))
988                                         goto out_cleanup;
989                                 hidinput = NULL;
990                         }
991                 }
992         }
993
994         if (hid->quirks & HID_QUIRK_MULTITOUCH) {
995                 /* generic hid does not know how to handle multitouch devices */
996                 if (hidinput)
997                         goto out_cleanup;
998                 goto out_unwind;
999         }
1000
1001         if (hidinput && input_register_device(hidinput->input))
1002                 goto out_cleanup;
1003
1004         return 0;
1005
1006 out_cleanup:
1007         list_del(&hidinput->list);
1008         input_free_device(hidinput->input);
1009         kfree(hidinput);
1010 out_unwind:
1011         /* unwind the ones we already registered */
1012         hidinput_disconnect(hid);
1013
1014         return -1;
1015 }
1016 EXPORT_SYMBOL_GPL(hidinput_connect);
1017
1018 void hidinput_disconnect(struct hid_device *hid)
1019 {
1020         struct hid_input *hidinput, *next;
1021
1022         list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1023                 list_del(&hidinput->list);
1024                 input_unregister_device(hidinput->input);
1025                 kfree(hidinput);
1026         }
1027 }
1028 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1029