Automerge with /usr/src/ntfs-2.6.git.
[linux-2.6] / drivers / usb / input / hid-input.c
1 /*
2  * $Id: hid-input.c,v 1.2 2002/04/23 00:59:25 rdamazio Exp $
3  *
4  *  Copyright (c) 2000-2001 Vojtech Pavlik
5  *
6  *  USB HID to Linux Input mapping
7  */
8
9 /*
10  * This program is free software; you can redistribute it and/or modify
11  * it under the terms of the GNU General Public License as published by
12  * the Free Software Foundation; either version 2 of the License, or
13  * (at your option) any later version.
14  *
15  * This program is distributed in the hope that it will be useful,
16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
18  * GNU General Public License for more details.
19  *
20  * You should have received a copy of the GNU General Public License
21  * along with this program; if not, write to the Free Software
22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
23  *
24  * Should you need to contact me, the author, you can do so either by
25  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
26  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
27  */
28
29 #include <linux/module.h>
30 #include <linux/slab.h>
31 #include <linux/kernel.h>
32 #include <linux/input.h>
33 #include <linux/usb.h>
34
35 #undef DEBUG
36
37 #include "hid.h"
38
39 #define unk     KEY_UNKNOWN
40
41 static unsigned char hid_keyboard[256] = {
42           0,  0,  0,  0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
43          50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44,  2,  3,
44           4,  5,  6,  7,  8,  9, 10, 11, 28,  1, 14, 15, 57, 12, 13, 26,
45          27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
46          65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
47         105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
48          72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
49         191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
50         115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
51         122,123, 90, 91, 85,unk,unk,unk,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,unk,unk,unk,unk,unk,unk,unk,unk,
54         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
55         unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
56          29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
57         150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
58 };
59
60 static struct {
61         __s32 x;
62         __s32 y;
63 }  hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
64
65 #define map_abs(c)      do { usage->code = c; usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX; } while (0)
66 #define map_rel(c)      do { usage->code = c; usage->type = EV_REL; bit = input->relbit; max = REL_MAX; } while (0)
67 #define map_key(c)      do { usage->code = c; usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; } while (0)
68 #define map_led(c)      do { usage->code = c; usage->type = EV_LED; bit = input->ledbit; max = LED_MAX; } while (0)
69 #define map_ff(c)       do { usage->code = c; usage->type = EV_FF;  bit = input->ffbit;  max =  FF_MAX; } while (0)
70
71 #define map_abs_clear(c)        do { map_abs(c); clear_bit(c, bit); } while (0)
72 #define map_key_clear(c)        do { map_key(c); clear_bit(c, bit); } while (0)
73 #define map_ff_effect(c)        do { set_bit(c, input->ffbit); } while (0)
74
75 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
76                                      struct hid_usage *usage)
77 {
78         struct input_dev *input = &hidinput->input;
79         struct hid_device *device = hidinput->input.private;
80         int max, code;
81         unsigned long *bit;
82
83         field->hidinput = hidinput;
84
85 #ifdef DEBUG
86         printk(KERN_DEBUG "Mapping: ");
87         resolv_usage(usage->hid);
88         printk(" ---> ");
89 #endif
90
91         if (field->flags & HID_MAIN_ITEM_CONSTANT)
92                 goto ignore;
93
94         switch (usage->hid & HID_USAGE_PAGE) {
95
96                 case HID_UP_UNDEFINED:
97                         goto ignore;
98
99                 case HID_UP_KEYBOARD:
100
101                         set_bit(EV_REP, input->evbit);
102
103                         if ((usage->hid & HID_USAGE) < 256) {
104                                 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
105                                 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
106                         } else
107                                 map_key(KEY_UNKNOWN);
108
109                         break;
110
111                 case HID_UP_BUTTON:
112
113                         code = ((usage->hid - 1) & 0xf);
114
115                         switch (field->application) {
116                                 case HID_GD_MOUSE:
117                                 case HID_GD_POINTER:  code += 0x110; break;
118                                 case HID_GD_JOYSTICK: code += 0x120; break;
119                                 case HID_GD_GAMEPAD:  code += 0x130; break;
120                                 default:
121                                         switch (field->physical) {
122                                                 case HID_GD_MOUSE:
123                                                 case HID_GD_POINTER:  code += 0x110; break;
124                                                 case HID_GD_JOYSTICK: code += 0x120; break;
125                                                 case HID_GD_GAMEPAD:  code += 0x130; break;
126                                                 default:              code += 0x100;
127                                         }
128                         }
129
130                         map_key(code);
131                         break;
132
133                 case HID_UP_GENDESK:
134
135                         if ((usage->hid & 0xf0) == 0x80) {      /* SystemControl */
136                                 switch (usage->hid & 0xf) {
137                                         case 0x1: map_key_clear(KEY_POWER);  break;
138                                         case 0x2: map_key_clear(KEY_SLEEP);  break;
139                                         case 0x3: map_key_clear(KEY_WAKEUP); break;
140                                         default: goto unknown;
141                                 }
142                                 break;
143                         }
144
145                         if ((usage->hid & 0xf0) == 0x90) {      /* D-pad */
146                                 switch (usage->hid) {
147                                         case HID_GD_UP:    usage->hat_dir = 1; break;
148                                         case HID_GD_DOWN:  usage->hat_dir = 5; break;
149                                         case HID_GD_RIGHT: usage->hat_dir = 3; break;
150                                         case HID_GD_LEFT:  usage->hat_dir = 7; break;
151                                         default: goto unknown;
152                                 }
153                                 if (field->dpad) {
154                                         map_abs(field->dpad);
155                                         goto ignore;
156                                 }
157                                 map_abs(ABS_HAT0X);
158                                 break;
159                         }
160
161                         switch (usage->hid) {
162
163                                 /* These usage IDs map directly to the usage codes. */
164                                 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
165                                 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
166                                 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
167                                         if (field->flags & HID_MAIN_ITEM_RELATIVE)
168                                                 map_rel(usage->hid & 0xf);
169                                         else
170                                                 map_abs(usage->hid & 0xf);
171                                         break;
172
173                                 case HID_GD_HATSWITCH:
174                                         usage->hat_min = field->logical_minimum;
175                                         usage->hat_max = field->logical_maximum;
176                                         map_abs(ABS_HAT0X);
177                                         break;
178
179                                 case HID_GD_START:      map_key_clear(BTN_START);       break;
180                                 case HID_GD_SELECT:     map_key_clear(BTN_SELECT);      break;
181
182                                 default: goto unknown;
183                         }
184
185                         break;
186
187                 case HID_UP_LED:
188                         if (((usage->hid - 1) & 0xffff) >= LED_MAX)
189                                 goto ignore;
190                         map_led((usage->hid - 1) & 0xffff);
191                         break;
192
193                 case HID_UP_DIGITIZER:
194
195                         switch (usage->hid & 0xff) {
196
197                                 case 0x30: /* TipPressure */
198                                         if (!test_bit(BTN_TOUCH, input->keybit)) {
199                                                 device->quirks |= HID_QUIRK_NOTOUCH;
200                                                 set_bit(EV_KEY, input->evbit);
201                                                 set_bit(BTN_TOUCH, input->keybit);
202                                         }
203
204                                         map_abs_clear(ABS_PRESSURE);
205                                         break;
206
207                                 case 0x32: /* InRange */
208                                         switch (field->physical & 0xff) {
209                                                 case 0x21: map_key(BTN_TOOL_MOUSE); break;
210                                                 case 0x22: map_key(BTN_TOOL_FINGER); break;
211                                                 default: map_key(BTN_TOOL_PEN); break;
212                                         }
213                                         break;
214
215                                 case 0x3c: /* Invert */
216                                         map_key_clear(BTN_TOOL_RUBBER);
217                                         break;
218
219                                 case 0x33: /* Touch */
220                                 case 0x42: /* TipSwitch */
221                                 case 0x43: /* TipSwitch2 */
222                                         device->quirks &= ~HID_QUIRK_NOTOUCH;
223                                         map_key_clear(BTN_TOUCH);
224                                         break;
225
226                                 case 0x44: /* BarrelSwitch */
227                                         map_key_clear(BTN_STYLUS);
228                                         break;
229
230                                 default:  goto unknown;
231                         }
232                         break;
233
234                 case HID_UP_CONSUMER:   /* USB HUT v1.1, pages 56-62 */
235
236                         switch (usage->hid & HID_USAGE) {
237                                 case 0x000: goto ignore;
238                                 case 0x034: map_key_clear(KEY_SLEEP);           break;
239                                 case 0x036: map_key_clear(BTN_MISC);            break;
240                                 case 0x08a: map_key_clear(KEY_WWW);             break;
241                                 case 0x095: map_key_clear(KEY_HELP);            break;
242                                 case 0x0b0: map_key_clear(KEY_PLAY);            break;
243                                 case 0x0b1: map_key_clear(KEY_PAUSE);           break;
244                                 case 0x0b2: map_key_clear(KEY_RECORD);          break;
245                                 case 0x0b3: map_key_clear(KEY_FASTFORWARD);     break;
246                                 case 0x0b4: map_key_clear(KEY_REWIND);          break;
247                                 case 0x0b5: map_key_clear(KEY_NEXTSONG);        break;
248                                 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG);    break;
249                                 case 0x0b7: map_key_clear(KEY_STOPCD);          break;
250                                 case 0x0b8: map_key_clear(KEY_EJECTCD);         break;
251                                 case 0x0cd: map_key_clear(KEY_PLAYPAUSE);       break;
252                                 case 0x0e0: map_abs_clear(ABS_VOLUME);          break;
253                                 case 0x0e2: map_key_clear(KEY_MUTE);            break;
254                                 case 0x0e5: map_key_clear(KEY_BASSBOOST);       break;
255                                 case 0x0e9: map_key_clear(KEY_VOLUMEUP);        break;
256                                 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN);      break;
257                                 case 0x183: map_key_clear(KEY_CONFIG);          break;
258                                 case 0x18a: map_key_clear(KEY_MAIL);            break;
259                                 case 0x192: map_key_clear(KEY_CALC);            break;
260                                 case 0x194: map_key_clear(KEY_FILE);            break;
261                                 case 0x21a: map_key_clear(KEY_UNDO);            break;
262                                 case 0x21b: map_key_clear(KEY_COPY);            break;
263                                 case 0x21c: map_key_clear(KEY_CUT);             break;
264                                 case 0x21d: map_key_clear(KEY_PASTE);           break;
265                                 case 0x221: map_key_clear(KEY_FIND);            break;
266                                 case 0x223: map_key_clear(KEY_HOMEPAGE);        break;
267                                 case 0x224: map_key_clear(KEY_BACK);            break;
268                                 case 0x225: map_key_clear(KEY_FORWARD);         break;
269                                 case 0x226: map_key_clear(KEY_STOP);            break;
270                                 case 0x227: map_key_clear(KEY_REFRESH);         break;
271                                 case 0x22a: map_key_clear(KEY_BOOKMARKS);       break;
272                                 case 0x238: map_rel(REL_HWHEEL);                break;
273                                 default:    goto unknown;
274                         }
275                         break;
276
277                 case HID_UP_HPVENDOR:   /* Reported on a Dutch layout HP5308 */
278
279                         set_bit(EV_REP, input->evbit);
280                         switch (usage->hid & HID_USAGE) {
281                                 case 0x021: map_key_clear(KEY_PRINT);           break;
282                                 case 0x070: map_key_clear(KEY_HP);              break;
283                                 case 0x071: map_key_clear(KEY_CAMERA);          break;
284                                 case 0x072: map_key_clear(KEY_SOUND);           break;
285                                 case 0x073: map_key_clear(KEY_QUESTION);        break;
286                                 case 0x080: map_key_clear(KEY_EMAIL);           break;
287                                 case 0x081: map_key_clear(KEY_CHAT);            break;
288                                 case 0x082: map_key_clear(KEY_SEARCH);          break;
289                                 case 0x083: map_key_clear(KEY_CONNECT);         break;
290                                 case 0x084: map_key_clear(KEY_FINANCE);         break;
291                                 case 0x085: map_key_clear(KEY_SPORT);           break;
292                                 case 0x086: map_key_clear(KEY_SHOP);            break;
293                                 default:    goto ignore;
294                         }
295                         break;
296
297                 case HID_UP_MSVENDOR:
298
299                         goto ignore;
300
301                 case HID_UP_PID:
302
303                         set_bit(EV_FF, input->evbit);
304                         switch(usage->hid & HID_USAGE) {
305                                 case 0x26: map_ff_effect(FF_CONSTANT);  goto ignore;
306                                 case 0x27: map_ff_effect(FF_RAMP);      goto ignore;
307                                 case 0x28: map_ff_effect(FF_CUSTOM);    goto ignore;
308                                 case 0x30: map_ff_effect(FF_SQUARE);    map_ff_effect(FF_PERIODIC); goto ignore;
309                                 case 0x31: map_ff_effect(FF_SINE);      map_ff_effect(FF_PERIODIC); goto ignore;
310                                 case 0x32: map_ff_effect(FF_TRIANGLE);  map_ff_effect(FF_PERIODIC); goto ignore;
311                                 case 0x33: map_ff_effect(FF_SAW_UP);    map_ff_effect(FF_PERIODIC); goto ignore;
312                                 case 0x34: map_ff_effect(FF_SAW_DOWN);  map_ff_effect(FF_PERIODIC); goto ignore;
313                                 case 0x40: map_ff_effect(FF_SPRING);    goto ignore;
314                                 case 0x41: map_ff_effect(FF_DAMPER);    goto ignore;
315                                 case 0x42: map_ff_effect(FF_INERTIA);   goto ignore;
316                                 case 0x43: map_ff_effect(FF_FRICTION);  goto ignore;
317                                 case 0x7e: map_ff(FF_GAIN);             break;
318                                 case 0x83: input->ff_effects_max = field->value[0]; goto ignore;
319                                 case 0x98: map_ff(FF_AUTOCENTER);       break;
320                                 case 0xa4: map_key_clear(BTN_DEAD);     break;
321                                 default: goto ignore;
322                         }
323                         break;
324
325                 default:
326                 unknown:
327                         if (field->report_size == 1) {
328                                 if (field->report->type == HID_OUTPUT_REPORT) {
329                                         map_led(LED_MISC);
330                                         break;
331                                 }
332                                 map_key(BTN_MISC);
333                                 break;
334                         }
335                         if (field->flags & HID_MAIN_ITEM_RELATIVE) {
336                                 map_rel(REL_MISC);
337                                 break;
338                         }
339                         map_abs(ABS_MISC);
340                         break;
341         }
342
343         set_bit(usage->type, input->evbit);
344
345         while (usage->code <= max && test_and_set_bit(usage->code, bit))
346                 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
347
348         if (usage->code > max)
349                 goto ignore;
350
351         if ((device->quirks & (HID_QUIRK_2WHEEL_MOUSE_HACK_7 | HID_QUIRK_2WHEEL_MOUSE_HACK_5)) &&
352                  (usage->type == EV_REL) && (usage->code == REL_WHEEL))
353                         set_bit(REL_HWHEEL, bit);
354
355         if (((device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_5) && (usage->hid == 0x00090005))
356                 || ((device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_7) && (usage->hid == 0x00090007)))
357                 goto ignore;
358
359         if (usage->type == EV_ABS) {
360
361                 int a = field->logical_minimum;
362                 int b = field->logical_maximum;
363
364                 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
365                         a = field->logical_minimum = 0;
366                         b = field->logical_maximum = 255;
367                 }
368
369                 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
370                         input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
371                 else    input_set_abs_params(input, usage->code, a, b, 0, 0);
372
373         }
374
375         if (usage->hat_min < usage->hat_max || usage->hat_dir) {
376                 int i;
377                 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
378                         input_set_abs_params(input, i, -1, 1, 0, 0);
379                         set_bit(i, input->absbit);
380                 }
381                 if (usage->hat_dir && !field->dpad)
382                         field->dpad = usage->code;
383         }
384
385 #ifdef DEBUG
386         resolv_event(usage->type, usage->code);
387         printk("\n");
388 #endif
389         return;
390
391 ignore:
392 #ifdef DEBUG
393         printk("IGNORED\n");
394 #endif
395         return;
396 }
397
398 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, struct pt_regs *regs)
399 {
400         struct input_dev *input = &field->hidinput->input;
401         int *quirks = &hid->quirks;
402
403         if (!input)
404                 return;
405
406         input_regs(input, regs);
407
408         if (!usage->type)
409                 return;
410
411         if (((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_5) && (usage->hid == 0x00090005))
412                 || ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_7) && (usage->hid == 0x00090007))) {
413                 if (value) hid->quirks |=  HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
414                 else       hid->quirks &= ~HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
415                 return;
416         }
417
418         if ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_ON) && (usage->code == REL_WHEEL)) {
419                 input_event(input, usage->type, REL_HWHEEL, value);
420                 return;
421         }
422
423         if (usage->hat_min < usage->hat_max || usage->hat_dir) {
424                 int hat_dir = usage->hat_dir;
425                 if (!hat_dir)
426                         hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
427                 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
428                 input_event(input, usage->type, usage->code    , hid_hat_to_axis[hat_dir].x);
429                 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
430                 return;
431         }
432
433         if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
434                 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
435                 return;
436         }
437
438         if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
439                 if (value) {
440                         input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
441                         return;
442                 }
443                 input_event(input, usage->type, usage->code, 0);
444                 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
445                 return;
446         }
447
448         if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
449                 int a = field->logical_minimum;
450                 int b = field->logical_maximum;
451                 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
452         }
453
454         if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
455                 input->ff_effects_max = value;
456                 dbg("Maximum Effects - %d",input->ff_effects_max);
457                 return;
458         }
459
460         if (usage->hid == (HID_UP_PID | 0x7fUL)) {
461                 dbg("PID Pool Report\n");
462                 return;
463         }
464
465         if((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
466                 return;
467
468         input_event(input, usage->type, usage->code, value);
469
470         if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
471                 input_event(input, usage->type, usage->code, 0);
472 }
473
474 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
475 {
476         struct list_head *lh;
477         struct hid_input *hidinput;
478
479         list_for_each (lh, &hid->inputs) {
480                 hidinput = list_entry(lh, struct hid_input, list);
481                 input_sync(&hidinput->input);
482         }
483 }
484
485 static int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
486 {
487         struct hid_report *report;
488         int i, j;
489
490         list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
491                 for (i = 0; i < report->maxfield; i++) {
492                         *field = report->field[i];
493                         for (j = 0; j < (*field)->maxusage; j++)
494                                 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
495                                         return j;
496                 }
497         }
498         return -1;
499 }
500
501 static int hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
502 {
503         struct hid_device *hid = dev->private;
504         struct hid_field *field;
505         int offset;
506
507         if (type == EV_FF)
508                 return hid_ff_event(hid, dev, type, code, value);
509
510         if (type != EV_LED)
511                 return -1;
512
513         if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
514                 warn("event field not found");
515                 return -1;
516         }
517
518         hid_set_field(field, offset, value);
519         hid_submit_report(hid, field->report, USB_DIR_OUT);
520
521         return 0;
522 }
523
524 static int hidinput_open(struct input_dev *dev)
525 {
526         struct hid_device *hid = dev->private;
527         return hid_open(hid);
528 }
529
530 static void hidinput_close(struct input_dev *dev)
531 {
532         struct hid_device *hid = dev->private;
533         hid_close(hid);
534 }
535
536 /*
537  * Register the input device; print a message.
538  * Configure the input layer interface
539  * Read all reports and initialize the absolute field values.
540  */
541
542 int hidinput_connect(struct hid_device *hid)
543 {
544         struct usb_device *dev = hid->dev;
545         struct hid_report *report;
546         struct hid_input *hidinput = NULL;
547         int i, j, k;
548
549         INIT_LIST_HEAD(&hid->inputs);
550
551         for (i = 0; i < hid->maxcollection; i++)
552                 if (hid->collection[i].type == HID_COLLECTION_APPLICATION ||
553                     hid->collection[i].type == HID_COLLECTION_PHYSICAL)
554                         if (IS_INPUT_APPLICATION(hid->collection[i].usage))
555                                 break;
556
557         if (i == hid->maxcollection)
558                 return -1;
559
560         for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++)
561                 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
562
563                         if (!report->maxfield)
564                                 continue;
565
566                         if (!hidinput) {
567                                 hidinput = kmalloc(sizeof(*hidinput), GFP_KERNEL);
568                                 if (!hidinput) {
569                                         err("Out of memory during hid input probe");
570                                         return -1;
571                                 }
572                                 memset(hidinput, 0, sizeof(*hidinput));
573
574                                 list_add_tail(&hidinput->list, &hid->inputs);
575
576                                 hidinput->input.private = hid;
577                                 hidinput->input.event = hidinput_input_event;
578                                 hidinput->input.open = hidinput_open;
579                                 hidinput->input.close = hidinput_close;
580
581                                 hidinput->input.name = hid->name;
582                                 hidinput->input.phys = hid->phys;
583                                 hidinput->input.uniq = hid->uniq;
584                                 hidinput->input.id.bustype = BUS_USB;
585                                 hidinput->input.id.vendor = le16_to_cpu(dev->descriptor.idVendor);
586                                 hidinput->input.id.product = le16_to_cpu(dev->descriptor.idProduct);
587                                 hidinput->input.id.version = le16_to_cpu(dev->descriptor.bcdDevice);
588                                 hidinput->input.dev = &hid->intf->dev;
589                         }
590
591                         for (i = 0; i < report->maxfield; i++)
592                                 for (j = 0; j < report->field[i]->maxusage; j++)
593                                         hidinput_configure_usage(hidinput, report->field[i],
594                                                                  report->field[i]->usage + j);
595
596                         if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
597                                 /* This will leave hidinput NULL, so that it
598                                  * allocates another one if we have more inputs on
599                                  * the same interface. Some devices (e.g. Happ's
600                                  * UGCI) cram a lot of unrelated inputs into the
601                                  * same interface. */
602                                 hidinput->report = report;
603                                 input_register_device(&hidinput->input);
604                                 hidinput = NULL;
605                         }
606                 }
607
608         /* This only gets called when we are a single-input (most of the
609          * time). IOW, not a HID_QUIRK_MULTI_INPUT. The hid_ff_init() is
610          * only useful in this case, and not for multi-input quirks. */
611         if (hidinput) {
612                 hid_ff_init(hid);
613                 input_register_device(&hidinput->input);
614         }
615
616         return 0;
617 }
618
619 void hidinput_disconnect(struct hid_device *hid)
620 {
621         struct list_head *lh, *next;
622         struct hid_input *hidinput;
623
624         list_for_each_safe(lh, next, &hid->inputs) {
625                 hidinput = list_entry(lh, struct hid_input, list);
626                 input_unregister_device(&hidinput->input);
627                 list_del(&hidinput->list);
628                 kfree(hidinput);
629         }
630 }