Linux kernel mirror (for testing)
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linux
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#include <linux/usb_input.h>
35
36#undef DEBUG
37
38#include "hid.h"
39
40#define unk KEY_UNKNOWN
41
42static unsigned char hid_keyboard[256] = {
43 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
44 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
45 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
46 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
47 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
48 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
49 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
50 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
51 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
52 122,123, 90, 91, 85,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 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
57 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
58 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
59};
60
61static struct {
62 __s32 x;
63 __s32 y;
64} hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
65
66#define map_abs(c) do { usage->code = c; usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX; } while (0)
67#define map_rel(c) do { usage->code = c; usage->type = EV_REL; bit = input->relbit; max = REL_MAX; } while (0)
68#define map_key(c) do { usage->code = c; usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; } while (0)
69#define map_led(c) do { usage->code = c; usage->type = EV_LED; bit = input->ledbit; max = LED_MAX; } while (0)
70#define map_ff(c) do { usage->code = c; usage->type = EV_FF; bit = input->ffbit; max = FF_MAX; } while (0)
71
72#define map_abs_clear(c) do { map_abs(c); clear_bit(c, bit); } while (0)
73#define map_key_clear(c) do { map_key(c); clear_bit(c, bit); } while (0)
74#define map_ff_effect(c) do { set_bit(c, input->ffbit); } while (0)
75
76static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
77 struct hid_usage *usage)
78{
79 struct input_dev *input = &hidinput->input;
80 struct hid_device *device = hidinput->input.private;
81 int max = 0, code;
82 unsigned long *bit = NULL;
83
84 field->hidinput = hidinput;
85
86#ifdef DEBUG
87 printk(KERN_DEBUG "Mapping: ");
88 resolv_usage(usage->hid);
89 printk(" ---> ");
90#endif
91
92 if (field->flags & HID_MAIN_ITEM_CONSTANT)
93 goto ignore;
94
95 switch (usage->hid & HID_USAGE_PAGE) {
96
97 case HID_UP_UNDEFINED:
98 goto ignore;
99
100 case HID_UP_KEYBOARD:
101
102 set_bit(EV_REP, input->evbit);
103
104 if ((usage->hid & HID_USAGE) < 256) {
105 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
106 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
107 } else
108 map_key(KEY_UNKNOWN);
109
110 break;
111
112 case HID_UP_BUTTON:
113
114 code = ((usage->hid - 1) & 0xf);
115
116 switch (field->application) {
117 case HID_GD_MOUSE:
118 case HID_GD_POINTER: code += 0x110; break;
119 case HID_GD_JOYSTICK: code += 0x120; break;
120 case HID_GD_GAMEPAD: code += 0x130; break;
121 default:
122 switch (field->physical) {
123 case HID_GD_MOUSE:
124 case HID_GD_POINTER: code += 0x110; break;
125 case HID_GD_JOYSTICK: code += 0x120; break;
126 case HID_GD_GAMEPAD: code += 0x130; break;
127 default: code += 0x100;
128 }
129 }
130
131 map_key(code);
132 break;
133
134
135 case HID_UP_SIMULATION:
136
137 switch (usage->hid & 0xffff) {
138 case 0xba: map_abs(ABS_RUDDER); break;
139 case 0xbb: map_abs(ABS_THROTTLE); break;
140 }
141 break;
142
143 case HID_UP_GENDESK:
144
145 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
146 switch (usage->hid & 0xf) {
147 case 0x1: map_key_clear(KEY_POWER); break;
148 case 0x2: map_key_clear(KEY_SLEEP); break;
149 case 0x3: map_key_clear(KEY_WAKEUP); break;
150 default: goto unknown;
151 }
152 break;
153 }
154
155 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
156 switch (usage->hid) {
157 case HID_GD_UP: usage->hat_dir = 1; break;
158 case HID_GD_DOWN: usage->hat_dir = 5; break;
159 case HID_GD_RIGHT: usage->hat_dir = 3; break;
160 case HID_GD_LEFT: usage->hat_dir = 7; break;
161 default: goto unknown;
162 }
163 if (field->dpad) {
164 map_abs(field->dpad);
165 goto ignore;
166 }
167 map_abs(ABS_HAT0X);
168 break;
169 }
170
171 switch (usage->hid) {
172
173 /* These usage IDs map directly to the usage codes. */
174 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
175 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
176 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
177 if (field->flags & HID_MAIN_ITEM_RELATIVE)
178 map_rel(usage->hid & 0xf);
179 else
180 map_abs(usage->hid & 0xf);
181 break;
182
183 case HID_GD_HATSWITCH:
184 usage->hat_min = field->logical_minimum;
185 usage->hat_max = field->logical_maximum;
186 map_abs(ABS_HAT0X);
187 break;
188
189 case HID_GD_START: map_key_clear(BTN_START); break;
190 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
191
192 default: goto unknown;
193 }
194
195 break;
196
197 case HID_UP_LED:
198 if (((usage->hid - 1) & 0xffff) >= LED_MAX)
199 goto ignore;
200 map_led((usage->hid - 1) & 0xffff);
201 break;
202
203 case HID_UP_DIGITIZER:
204
205 switch (usage->hid & 0xff) {
206
207 case 0x30: /* TipPressure */
208 if (!test_bit(BTN_TOUCH, input->keybit)) {
209 device->quirks |= HID_QUIRK_NOTOUCH;
210 set_bit(EV_KEY, input->evbit);
211 set_bit(BTN_TOUCH, input->keybit);
212 }
213
214 map_abs_clear(ABS_PRESSURE);
215 break;
216
217 case 0x32: /* InRange */
218 switch (field->physical & 0xff) {
219 case 0x21: map_key(BTN_TOOL_MOUSE); break;
220 case 0x22: map_key(BTN_TOOL_FINGER); break;
221 default: map_key(BTN_TOOL_PEN); break;
222 }
223 break;
224
225 case 0x3c: /* Invert */
226 map_key_clear(BTN_TOOL_RUBBER);
227 break;
228
229 case 0x33: /* Touch */
230 case 0x42: /* TipSwitch */
231 case 0x43: /* TipSwitch2 */
232 device->quirks &= ~HID_QUIRK_NOTOUCH;
233 map_key_clear(BTN_TOUCH);
234 break;
235
236 case 0x44: /* BarrelSwitch */
237 map_key_clear(BTN_STYLUS);
238 break;
239
240 default: goto unknown;
241 }
242 break;
243
244 case HID_UP_CONSUMER: /* USB HUT v1.1, pages 56-62 */
245
246 switch (usage->hid & HID_USAGE) {
247 case 0x000: goto ignore;
248 case 0x034: map_key_clear(KEY_SLEEP); break;
249 case 0x036: map_key_clear(BTN_MISC); break;
250 case 0x045: map_key_clear(KEY_RADIO); break;
251 case 0x08a: map_key_clear(KEY_WWW); break;
252 case 0x08d: map_key_clear(KEY_PROGRAM); break;
253 case 0x095: map_key_clear(KEY_HELP); break;
254 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
255 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
256 case 0x0b0: map_key_clear(KEY_PLAY); break;
257 case 0x0b1: map_key_clear(KEY_PAUSE); break;
258 case 0x0b2: map_key_clear(KEY_RECORD); break;
259 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
260 case 0x0b4: map_key_clear(KEY_REWIND); break;
261 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
262 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
263 case 0x0b7: map_key_clear(KEY_STOPCD); break;
264 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
265 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
266 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
267 case 0x0e2: map_key_clear(KEY_MUTE); break;
268 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
269 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
270 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
271 case 0x183: map_key_clear(KEY_CONFIG); break;
272 case 0x18a: map_key_clear(KEY_MAIL); break;
273 case 0x192: map_key_clear(KEY_CALC); break;
274 case 0x194: map_key_clear(KEY_FILE); break;
275 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
276 case 0x201: map_key_clear(KEY_NEW); break;
277 case 0x207: map_key_clear(KEY_SAVE); break;
278 case 0x208: map_key_clear(KEY_PRINT); break;
279 case 0x209: map_key_clear(KEY_PROPS); break;
280 case 0x21a: map_key_clear(KEY_UNDO); break;
281 case 0x21b: map_key_clear(KEY_COPY); break;
282 case 0x21c: map_key_clear(KEY_CUT); break;
283 case 0x21d: map_key_clear(KEY_PASTE); break;
284 case 0x221: map_key_clear(KEY_FIND); break;
285 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
286 case 0x224: map_key_clear(KEY_BACK); break;
287 case 0x225: map_key_clear(KEY_FORWARD); break;
288 case 0x226: map_key_clear(KEY_STOP); break;
289 case 0x227: map_key_clear(KEY_REFRESH); break;
290 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
291 case 0x238: map_rel(REL_HWHEEL); break;
292 case 0x279: map_key_clear(KEY_REDO); break;
293 case 0x289: map_key_clear(KEY_REPLY); break;
294 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
295 case 0x28c: map_key_clear(KEY_SEND); break;
296 default: goto ignore;
297 }
298 break;
299
300 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
301
302 set_bit(EV_REP, input->evbit);
303 switch (usage->hid & HID_USAGE) {
304 case 0x021: map_key_clear(KEY_PRINT); break;
305 case 0x070: map_key_clear(KEY_HP); break;
306 case 0x071: map_key_clear(KEY_CAMERA); break;
307 case 0x072: map_key_clear(KEY_SOUND); break;
308 case 0x073: map_key_clear(KEY_QUESTION); break;
309 case 0x080: map_key_clear(KEY_EMAIL); break;
310 case 0x081: map_key_clear(KEY_CHAT); break;
311 case 0x082: map_key_clear(KEY_SEARCH); break;
312 case 0x083: map_key_clear(KEY_CONNECT); break;
313 case 0x084: map_key_clear(KEY_FINANCE); break;
314 case 0x085: map_key_clear(KEY_SPORT); break;
315 case 0x086: map_key_clear(KEY_SHOP); break;
316 default: goto ignore;
317 }
318 break;
319
320 case HID_UP_MSVENDOR:
321 goto ignore;
322
323 case HID_UP_CUSTOM: /* Reported on Logitech and Powerbook USB keyboards */
324
325 set_bit(EV_REP, input->evbit);
326 switch(usage->hid & HID_USAGE) {
327 case 0x003: map_key_clear(KEY_FN); break;
328 default: goto ignore;
329 }
330 break;
331
332 case HID_UP_LOGIVENDOR: /* Reported on Logitech Ultra X Media Remote */
333
334 set_bit(EV_REP, input->evbit);
335 switch(usage->hid & HID_USAGE) {
336 case 0x004: map_key_clear(KEY_AGAIN); break;
337 case 0x00d: map_key_clear(KEY_HOME); break;
338 case 0x024: map_key_clear(KEY_SHUFFLE); break;
339 case 0x025: map_key_clear(KEY_TV); break;
340 case 0x026: map_key_clear(KEY_MENU); break;
341 case 0x031: map_key_clear(KEY_AUDIO); break;
342 case 0x032: map_key_clear(KEY_SUBTITLE); break;
343 case 0x033: map_key_clear(KEY_LAST); break;
344 case 0x047: map_key_clear(KEY_MP3); break;
345 case 0x048: map_key_clear(KEY_DVD); break;
346 case 0x049: map_key_clear(KEY_MEDIA); break;
347 case 0x04a: map_key_clear(KEY_VIDEO); break;
348 case 0x04b: map_key_clear(KEY_ANGLE); break;
349 case 0x04c: map_key_clear(KEY_LANGUAGE); break;
350 case 0x04d: map_key_clear(KEY_SUBTITLE); break;
351 case 0x051: map_key_clear(KEY_RED); break;
352 case 0x052: map_key_clear(KEY_CLOSE); break;
353 default: goto ignore;
354 }
355 break;
356
357 case HID_UP_PID:
358
359 set_bit(EV_FF, input->evbit);
360 switch(usage->hid & HID_USAGE) {
361 case 0x26: map_ff_effect(FF_CONSTANT); goto ignore;
362 case 0x27: map_ff_effect(FF_RAMP); goto ignore;
363 case 0x28: map_ff_effect(FF_CUSTOM); goto ignore;
364 case 0x30: map_ff_effect(FF_SQUARE); map_ff_effect(FF_PERIODIC); goto ignore;
365 case 0x31: map_ff_effect(FF_SINE); map_ff_effect(FF_PERIODIC); goto ignore;
366 case 0x32: map_ff_effect(FF_TRIANGLE); map_ff_effect(FF_PERIODIC); goto ignore;
367 case 0x33: map_ff_effect(FF_SAW_UP); map_ff_effect(FF_PERIODIC); goto ignore;
368 case 0x34: map_ff_effect(FF_SAW_DOWN); map_ff_effect(FF_PERIODIC); goto ignore;
369 case 0x40: map_ff_effect(FF_SPRING); goto ignore;
370 case 0x41: map_ff_effect(FF_DAMPER); goto ignore;
371 case 0x42: map_ff_effect(FF_INERTIA); goto ignore;
372 case 0x43: map_ff_effect(FF_FRICTION); goto ignore;
373 case 0x7e: map_ff(FF_GAIN); break;
374 case 0x83: input->ff_effects_max = field->value[0]; goto ignore;
375 case 0x98: map_ff(FF_AUTOCENTER); break;
376 case 0xa4: map_key_clear(BTN_DEAD); break;
377 default: goto ignore;
378 }
379 break;
380
381 default:
382 unknown:
383 if (field->report_size == 1) {
384 if (field->report->type == HID_OUTPUT_REPORT) {
385 map_led(LED_MISC);
386 break;
387 }
388 map_key(BTN_MISC);
389 break;
390 }
391 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
392 map_rel(REL_MISC);
393 break;
394 }
395 map_abs(ABS_MISC);
396 break;
397 }
398
399 set_bit(usage->type, input->evbit);
400
401 while (usage->code <= max && test_and_set_bit(usage->code, bit))
402 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
403
404 if (usage->code > max)
405 goto ignore;
406
407 if (((device->quirks & (HID_QUIRK_2WHEEL_POWERMOUSE)) && (usage->hid == 0x00010032)))
408 map_rel(REL_HWHEEL);
409
410 if ((device->quirks & (HID_QUIRK_2WHEEL_MOUSE_HACK_7 | HID_QUIRK_2WHEEL_MOUSE_HACK_5)) &&
411 (usage->type == EV_REL) && (usage->code == REL_WHEEL))
412 set_bit(REL_HWHEEL, bit);
413
414 if (((device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_5) && (usage->hid == 0x00090005))
415 || ((device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_7) && (usage->hid == 0x00090007)))
416 goto ignore;
417
418 if (usage->type == EV_ABS) {
419
420 int a = field->logical_minimum;
421 int b = field->logical_maximum;
422
423 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
424 a = field->logical_minimum = 0;
425 b = field->logical_maximum = 255;
426 }
427
428 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
429 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
430 else input_set_abs_params(input, usage->code, a, b, 0, 0);
431
432 }
433
434 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
435 int i;
436 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
437 input_set_abs_params(input, i, -1, 1, 0, 0);
438 set_bit(i, input->absbit);
439 }
440 if (usage->hat_dir && !field->dpad)
441 field->dpad = usage->code;
442 }
443
444#ifdef DEBUG
445 resolv_event(usage->type, usage->code);
446 printk("\n");
447#endif
448 return;
449
450ignore:
451#ifdef DEBUG
452 printk("IGNORED\n");
453#endif
454 return;
455}
456
457void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, struct pt_regs *regs)
458{
459 struct input_dev *input;
460 int *quirks = &hid->quirks;
461
462 if (!field->hidinput)
463 return;
464 input = &field->hidinput->input;
465
466 input_regs(input, regs);
467
468 if (!usage->type)
469 return;
470
471 if (((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_5) && (usage->hid == 0x00090005))
472 || ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_7) && (usage->hid == 0x00090007))) {
473 if (value) hid->quirks |= HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
474 else hid->quirks &= ~HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
475 return;
476 }
477
478 if ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_ON) && (usage->code == REL_WHEEL)) {
479 input_event(input, usage->type, REL_HWHEEL, value);
480 return;
481 }
482
483 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
484 int hat_dir = usage->hat_dir;
485 if (!hat_dir)
486 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
487 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
488 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
489 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
490 return;
491 }
492
493 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
494 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
495 return;
496 }
497
498 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
499 if (value) {
500 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
501 return;
502 }
503 input_event(input, usage->type, usage->code, 0);
504 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
505 return;
506 }
507
508 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
509 int a = field->logical_minimum;
510 int b = field->logical_maximum;
511 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
512 }
513
514 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
515 input->ff_effects_max = value;
516 dbg("Maximum Effects - %d",input->ff_effects_max);
517 return;
518 }
519
520 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
521 dbg("PID Pool Report\n");
522 return;
523 }
524
525 if((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
526 return;
527
528 input_event(input, usage->type, usage->code, value);
529
530 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
531 input_event(input, usage->type, usage->code, 0);
532}
533
534void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
535{
536 struct list_head *lh;
537 struct hid_input *hidinput;
538
539 list_for_each (lh, &hid->inputs) {
540 hidinput = list_entry(lh, struct hid_input, list);
541 input_sync(&hidinput->input);
542 }
543}
544
545static int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
546{
547 struct hid_report *report;
548 int i, j;
549
550 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
551 for (i = 0; i < report->maxfield; i++) {
552 *field = report->field[i];
553 for (j = 0; j < (*field)->maxusage; j++)
554 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
555 return j;
556 }
557 }
558 return -1;
559}
560
561static int hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
562{
563 struct hid_device *hid = dev->private;
564 struct hid_field *field;
565 int offset;
566
567 if (type == EV_FF)
568 return hid_ff_event(hid, dev, type, code, value);
569
570 if (type != EV_LED)
571 return -1;
572
573 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
574 warn("event field not found");
575 return -1;
576 }
577
578 hid_set_field(field, offset, value);
579 hid_submit_report(hid, field->report, USB_DIR_OUT);
580
581 return 0;
582}
583
584static int hidinput_open(struct input_dev *dev)
585{
586 struct hid_device *hid = dev->private;
587 return hid_open(hid);
588}
589
590static void hidinput_close(struct input_dev *dev)
591{
592 struct hid_device *hid = dev->private;
593 hid_close(hid);
594}
595
596/*
597 * Register the input device; print a message.
598 * Configure the input layer interface
599 * Read all reports and initialize the absolute field values.
600 */
601
602int hidinput_connect(struct hid_device *hid)
603{
604 struct usb_device *dev = hid->dev;
605 struct hid_report *report;
606 struct hid_input *hidinput = NULL;
607 int i, j, k;
608
609 INIT_LIST_HEAD(&hid->inputs);
610
611 for (i = 0; i < hid->maxcollection; i++)
612 if (hid->collection[i].type == HID_COLLECTION_APPLICATION ||
613 hid->collection[i].type == HID_COLLECTION_PHYSICAL)
614 if (IS_INPUT_APPLICATION(hid->collection[i].usage))
615 break;
616
617 if (i == hid->maxcollection)
618 return -1;
619
620 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++)
621 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
622
623 if (!report->maxfield)
624 continue;
625
626 if (!hidinput) {
627 hidinput = kmalloc(sizeof(*hidinput), GFP_KERNEL);
628 if (!hidinput) {
629 err("Out of memory during hid input probe");
630 return -1;
631 }
632 memset(hidinput, 0, sizeof(*hidinput));
633
634 list_add_tail(&hidinput->list, &hid->inputs);
635
636 hidinput->input.private = hid;
637 hidinput->input.event = hidinput_input_event;
638 hidinput->input.open = hidinput_open;
639 hidinput->input.close = hidinput_close;
640
641 hidinput->input.name = hid->name;
642 hidinput->input.phys = hid->phys;
643 hidinput->input.uniq = hid->uniq;
644 usb_to_input_id(dev, &hidinput->input.id);
645 hidinput->input.dev = &hid->intf->dev;
646 }
647
648 for (i = 0; i < report->maxfield; i++)
649 for (j = 0; j < report->field[i]->maxusage; j++)
650 hidinput_configure_usage(hidinput, report->field[i],
651 report->field[i]->usage + j);
652
653 if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
654 /* This will leave hidinput NULL, so that it
655 * allocates another one if we have more inputs on
656 * the same interface. Some devices (e.g. Happ's
657 * UGCI) cram a lot of unrelated inputs into the
658 * same interface. */
659 hidinput->report = report;
660 input_register_device(&hidinput->input);
661 hidinput = NULL;
662 }
663 }
664
665 /* This only gets called when we are a single-input (most of the
666 * time). IOW, not a HID_QUIRK_MULTI_INPUT. The hid_ff_init() is
667 * only useful in this case, and not for multi-input quirks. */
668 if (hidinput) {
669 hid_ff_init(hid);
670 input_register_device(&hidinput->input);
671 }
672
673 return 0;
674}
675
676void hidinput_disconnect(struct hid_device *hid)
677{
678 struct list_head *lh, *next;
679 struct hid_input *hidinput;
680
681 list_for_each_safe(lh, next, &hid->inputs) {
682 hidinput = list_entry(lh, struct hid_input, list);
683 input_unregister_device(&hidinput->input);
684 list_del(&hidinput->list);
685 kfree(hidinput);
686 }
687}