tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
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 const 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 const 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 = 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 default: goto ignore;
141 }
142 break;
143
144 case HID_UP_GENDESK:
145
146 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
147 switch (usage->hid & 0xf) {
148 case 0x1: map_key_clear(KEY_POWER); break;
149 case 0x2: map_key_clear(KEY_SLEEP); break;
150 case 0x3: map_key_clear(KEY_WAKEUP); break;
151 default: goto unknown;
152 }
153 break;
154 }
155
156 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
157 switch (usage->hid) {
158 case HID_GD_UP: usage->hat_dir = 1; break;
159 case HID_GD_DOWN: usage->hat_dir = 5; break;
160 case HID_GD_RIGHT: usage->hat_dir = 3; break;
161 case HID_GD_LEFT: usage->hat_dir = 7; break;
162 default: goto unknown;
163 }
164 if (field->dpad) {
165 map_abs(field->dpad);
166 goto ignore;
167 }
168 map_abs(ABS_HAT0X);
169 break;
170 }
171
172 switch (usage->hid) {
173
174 /* These usage IDs map directly to the usage codes. */
175 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
176 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
177 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
178 if (field->flags & HID_MAIN_ITEM_RELATIVE)
179 map_rel(usage->hid & 0xf);
180 else
181 map_abs(usage->hid & 0xf);
182 break;
183
184 case HID_GD_HATSWITCH:
185 usage->hat_min = field->logical_minimum;
186 usage->hat_max = field->logical_maximum;
187 map_abs(ABS_HAT0X);
188 break;
189
190 case HID_GD_START: map_key_clear(BTN_START); break;
191 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
192
193 default: goto unknown;
194 }
195
196 break;
197
198 case HID_UP_LED:
199 if (((usage->hid - 1) & 0xffff) >= LED_MAX)
200 goto ignore;
201 map_led((usage->hid - 1) & 0xffff);
202 break;
203
204 case HID_UP_DIGITIZER:
205
206 switch (usage->hid & 0xff) {
207
208 case 0x30: /* TipPressure */
209 if (!test_bit(BTN_TOUCH, input->keybit)) {
210 device->quirks |= HID_QUIRK_NOTOUCH;
211 set_bit(EV_KEY, input->evbit);
212 set_bit(BTN_TOUCH, input->keybit);
213 }
214
215 map_abs_clear(ABS_PRESSURE);
216 break;
217
218 case 0x32: /* InRange */
219 switch (field->physical & 0xff) {
220 case 0x21: map_key(BTN_TOOL_MOUSE); break;
221 case 0x22: map_key(BTN_TOOL_FINGER); break;
222 default: map_key(BTN_TOOL_PEN); break;
223 }
224 break;
225
226 case 0x3c: /* Invert */
227 map_key_clear(BTN_TOOL_RUBBER);
228 break;
229
230 case 0x33: /* Touch */
231 case 0x42: /* TipSwitch */
232 case 0x43: /* TipSwitch2 */
233 device->quirks &= ~HID_QUIRK_NOTOUCH;
234 map_key_clear(BTN_TOUCH);
235 break;
236
237 case 0x44: /* BarrelSwitch */
238 map_key_clear(BTN_STYLUS);
239 break;
240
241 default: goto unknown;
242 }
243 break;
244
245 case HID_UP_CONSUMER: /* USB HUT v1.1, pages 56-62 */
246
247 switch (usage->hid & HID_USAGE) {
248 case 0x000: goto ignore;
249 case 0x034: map_key_clear(KEY_SLEEP); break;
250 case 0x036: map_key_clear(BTN_MISC); break;
251 case 0x045: map_key_clear(KEY_RADIO); break;
252 case 0x08a: map_key_clear(KEY_WWW); break;
253 case 0x08d: map_key_clear(KEY_PROGRAM); break;
254 case 0x095: map_key_clear(KEY_HELP); break;
255 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
256 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
257 case 0x0b0: map_key_clear(KEY_PLAY); break;
258 case 0x0b1: map_key_clear(KEY_PAUSE); break;
259 case 0x0b2: map_key_clear(KEY_RECORD); break;
260 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
261 case 0x0b4: map_key_clear(KEY_REWIND); break;
262 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
263 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
264 case 0x0b7: map_key_clear(KEY_STOPCD); break;
265 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
266 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
267 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
268 case 0x0e2: map_key_clear(KEY_MUTE); break;
269 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
270 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
271 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
272 case 0x183: map_key_clear(KEY_CONFIG); break;
273 case 0x18a: map_key_clear(KEY_MAIL); break;
274 case 0x192: map_key_clear(KEY_CALC); break;
275 case 0x194: map_key_clear(KEY_FILE); break;
276 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
277 case 0x201: map_key_clear(KEY_NEW); break;
278 case 0x207: map_key_clear(KEY_SAVE); break;
279 case 0x208: map_key_clear(KEY_PRINT); break;
280 case 0x209: map_key_clear(KEY_PROPS); break;
281 case 0x21a: map_key_clear(KEY_UNDO); break;
282 case 0x21b: map_key_clear(KEY_COPY); break;
283 case 0x21c: map_key_clear(KEY_CUT); break;
284 case 0x21d: map_key_clear(KEY_PASTE); break;
285 case 0x221: map_key_clear(KEY_FIND); break;
286 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
287 case 0x224: map_key_clear(KEY_BACK); break;
288 case 0x225: map_key_clear(KEY_FORWARD); break;
289 case 0x226: map_key_clear(KEY_STOP); break;
290 case 0x227: map_key_clear(KEY_REFRESH); break;
291 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
292 case 0x238: map_rel(REL_HWHEEL); break;
293 case 0x279: map_key_clear(KEY_REDO); break;
294 case 0x289: map_key_clear(KEY_REPLY); break;
295 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
296 case 0x28c: map_key_clear(KEY_SEND); break;
297 default: goto ignore;
298 }
299 break;
300
301 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
302
303 set_bit(EV_REP, input->evbit);
304 switch (usage->hid & HID_USAGE) {
305 case 0x021: map_key_clear(KEY_PRINT); break;
306 case 0x070: map_key_clear(KEY_HP); break;
307 case 0x071: map_key_clear(KEY_CAMERA); break;
308 case 0x072: map_key_clear(KEY_SOUND); break;
309 case 0x073: map_key_clear(KEY_QUESTION); break;
310 case 0x080: map_key_clear(KEY_EMAIL); break;
311 case 0x081: map_key_clear(KEY_CHAT); break;
312 case 0x082: map_key_clear(KEY_SEARCH); break;
313 case 0x083: map_key_clear(KEY_CONNECT); break;
314 case 0x084: map_key_clear(KEY_FINANCE); break;
315 case 0x085: map_key_clear(KEY_SPORT); break;
316 case 0x086: map_key_clear(KEY_SHOP); break;
317 default: goto ignore;
318 }
319 break;
320
321 case HID_UP_MSVENDOR:
322 goto ignore;
323
324 case HID_UP_CUSTOM: /* Reported on Logitech and Powerbook USB keyboards */
325
326 set_bit(EV_REP, input->evbit);
327 switch(usage->hid & HID_USAGE) {
328 case 0x003: map_key_clear(KEY_FN); break;
329 default: goto ignore;
330 }
331 break;
332
333 case HID_UP_LOGIVENDOR: /* Reported on Logitech Ultra X Media Remote */
334
335 set_bit(EV_REP, input->evbit);
336 switch(usage->hid & HID_USAGE) {
337 case 0x004: map_key_clear(KEY_AGAIN); break;
338 case 0x00d: map_key_clear(KEY_HOME); break;
339 case 0x024: map_key_clear(KEY_SHUFFLE); break;
340 case 0x025: map_key_clear(KEY_TV); break;
341 case 0x026: map_key_clear(KEY_MENU); break;
342 case 0x031: map_key_clear(KEY_AUDIO); break;
343 case 0x032: map_key_clear(KEY_SUBTITLE); break;
344 case 0x033: map_key_clear(KEY_LAST); break;
345 case 0x047: map_key_clear(KEY_MP3); break;
346 case 0x048: map_key_clear(KEY_DVD); break;
347 case 0x049: map_key_clear(KEY_MEDIA); break;
348 case 0x04a: map_key_clear(KEY_VIDEO); break;
349 case 0x04b: map_key_clear(KEY_ANGLE); break;
350 case 0x04c: map_key_clear(KEY_LANGUAGE); break;
351 case 0x04d: map_key_clear(KEY_SUBTITLE); break;
352 case 0x051: map_key_clear(KEY_RED); break;
353 case 0x052: map_key_clear(KEY_CLOSE); break;
354 default: goto ignore;
355 }
356 break;
357
358 case HID_UP_PID:
359
360 set_bit(EV_FF, input->evbit);
361 switch(usage->hid & HID_USAGE) {
362 case 0x26: map_ff_effect(FF_CONSTANT); goto ignore;
363 case 0x27: map_ff_effect(FF_RAMP); goto ignore;
364 case 0x28: map_ff_effect(FF_CUSTOM); goto ignore;
365 case 0x30: map_ff_effect(FF_SQUARE); map_ff_effect(FF_PERIODIC); goto ignore;
366 case 0x31: map_ff_effect(FF_SINE); map_ff_effect(FF_PERIODIC); goto ignore;
367 case 0x32: map_ff_effect(FF_TRIANGLE); map_ff_effect(FF_PERIODIC); goto ignore;
368 case 0x33: map_ff_effect(FF_SAW_UP); map_ff_effect(FF_PERIODIC); goto ignore;
369 case 0x34: map_ff_effect(FF_SAW_DOWN); map_ff_effect(FF_PERIODIC); goto ignore;
370 case 0x40: map_ff_effect(FF_SPRING); goto ignore;
371 case 0x41: map_ff_effect(FF_DAMPER); goto ignore;
372 case 0x42: map_ff_effect(FF_INERTIA); goto ignore;
373 case 0x43: map_ff_effect(FF_FRICTION); goto ignore;
374 case 0x7e: map_ff(FF_GAIN); break;
375 case 0x83: input->ff_effects_max = field->value[0]; goto ignore;
376 case 0x98: map_ff(FF_AUTOCENTER); break;
377 case 0xa4: map_key_clear(BTN_DEAD); break;
378 default: goto ignore;
379 }
380 break;
381
382 default:
383 unknown:
384 if (field->report_size == 1) {
385 if (field->report->type == HID_OUTPUT_REPORT) {
386 map_led(LED_MISC);
387 break;
388 }
389 map_key(BTN_MISC);
390 break;
391 }
392 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
393 map_rel(REL_MISC);
394 break;
395 }
396 map_abs(ABS_MISC);
397 break;
398 }
399
400 set_bit(usage->type, input->evbit);
401
402 while (usage->code <= max && test_and_set_bit(usage->code, bit))
403 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
404
405 if (usage->code > max)
406 goto ignore;
407
408 if (((device->quirks & (HID_QUIRK_2WHEEL_POWERMOUSE)) && (usage->hid == 0x00010032)))
409 map_rel(REL_HWHEEL);
410
411 if ((device->quirks & (HID_QUIRK_2WHEEL_MOUSE_HACK_7 | HID_QUIRK_2WHEEL_MOUSE_HACK_5)) &&
412 (usage->type == EV_REL) && (usage->code == REL_WHEEL))
413 set_bit(REL_HWHEEL, bit);
414
415 if (((device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_5) && (usage->hid == 0x00090005))
416 || ((device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_7) && (usage->hid == 0x00090007)))
417 goto ignore;
418
419 if (usage->type == EV_ABS) {
420
421 int a = field->logical_minimum;
422 int b = field->logical_maximum;
423
424 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
425 a = field->logical_minimum = 0;
426 b = field->logical_maximum = 255;
427 }
428
429 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
430 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
431 else input_set_abs_params(input, usage->code, a, b, 0, 0);
432
433 }
434
435 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
436 int i;
437 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
438 input_set_abs_params(input, i, -1, 1, 0, 0);
439 set_bit(i, input->absbit);
440 }
441 if (usage->hat_dir && !field->dpad)
442 field->dpad = usage->code;
443 }
444
445#ifdef DEBUG
446 resolv_event(usage->type, usage->code);
447 printk("\n");
448#endif
449 return;
450
451ignore:
452#ifdef DEBUG
453 printk("IGNORED\n");
454#endif
455 return;
456}
457
458void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, struct pt_regs *regs)
459{
460 struct input_dev *input;
461 int *quirks = &hid->quirks;
462
463 if (!field->hidinput)
464 return;
465
466 input = field->hidinput->input;
467
468 input_regs(input, regs);
469
470 if (!usage->type)
471 return;
472
473 if (((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_5) && (usage->hid == 0x00090005))
474 || ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_7) && (usage->hid == 0x00090007))) {
475 if (value) hid->quirks |= HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
476 else hid->quirks &= ~HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
477 return;
478 }
479
480 if ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_ON) && (usage->code == REL_WHEEL)) {
481 input_event(input, usage->type, REL_HWHEEL, value);
482 return;
483 }
484
485 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
486 int hat_dir = usage->hat_dir;
487 if (!hat_dir)
488 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
489 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
490 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
491 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
492 return;
493 }
494
495 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
496 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
497 return;
498 }
499
500 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
501 if (value) {
502 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
503 return;
504 }
505 input_event(input, usage->type, usage->code, 0);
506 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
507 return;
508 }
509
510 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
511 int a = field->logical_minimum;
512 int b = field->logical_maximum;
513 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
514 }
515
516 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
517 input->ff_effects_max = value;
518 dbg("Maximum Effects - %d",input->ff_effects_max);
519 return;
520 }
521
522 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
523 dbg("PID Pool Report\n");
524 return;
525 }
526
527 if((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
528 return;
529
530 input_event(input, usage->type, usage->code, value);
531
532 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
533 input_event(input, usage->type, usage->code, 0);
534}
535
536void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
537{
538 struct hid_input *hidinput;
539
540 list_for_each_entry(hidinput, &hid->inputs, list)
541 input_sync(hidinput->input);
542}
543
544static int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
545{
546 struct hid_report *report;
547 int i, j;
548
549 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
550 for (i = 0; i < report->maxfield; i++) {
551 *field = report->field[i];
552 for (j = 0; j < (*field)->maxusage; j++)
553 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
554 return j;
555 }
556 }
557 return -1;
558}
559
560static int hidinput_input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
561{
562 struct hid_device *hid = dev->private;
563 struct hid_field *field;
564 int offset;
565
566 if (type == EV_FF)
567 return hid_ff_event(hid, dev, type, code, value);
568
569 if (type != EV_LED)
570 return -1;
571
572 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
573 warn("event field not found");
574 return -1;
575 }
576
577 hid_set_field(field, offset, value);
578 hid_submit_report(hid, field->report, USB_DIR_OUT);
579
580 return 0;
581}
582
583static int hidinput_open(struct input_dev *dev)
584{
585 struct hid_device *hid = dev->private;
586 return hid_open(hid);
587}
588
589static void hidinput_close(struct input_dev *dev)
590{
591 struct hid_device *hid = dev->private;
592 hid_close(hid);
593}
594
595/*
596 * Register the input device; print a message.
597 * Configure the input layer interface
598 * Read all reports and initialize the absolute field values.
599 */
600
601int hidinput_connect(struct hid_device *hid)
602{
603 struct usb_device *dev = hid->dev;
604 struct hid_report *report;
605 struct hid_input *hidinput = NULL;
606 struct input_dev *input_dev;
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 = kzalloc(sizeof(*hidinput), GFP_KERNEL);
628 input_dev = input_allocate_device();
629 if (!hidinput || !input_dev) {
630 kfree(hidinput);
631 input_free_device(input_dev);
632 err("Out of memory during hid input probe");
633 return -1;
634 }
635
636 input_dev->private = hid;
637 input_dev->event = hidinput_input_event;
638 input_dev->open = hidinput_open;
639 input_dev->close = hidinput_close;
640
641 input_dev->name = hid->name;
642 input_dev->phys = hid->phys;
643 input_dev->uniq = hid->uniq;
644 usb_to_input_id(dev, &input_dev->id);
645 input_dev->cdev.dev = &hid->intf->dev;
646
647 hidinput->input = input_dev;
648 list_add_tail(&hidinput->list, &hid->inputs);
649 }
650
651 for (i = 0; i < report->maxfield; i++)
652 for (j = 0; j < report->field[i]->maxusage; j++)
653 hidinput_configure_usage(hidinput, report->field[i],
654 report->field[i]->usage + j);
655
656 if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
657 /* This will leave hidinput NULL, so that it
658 * allocates another one if we have more inputs on
659 * the same interface. Some devices (e.g. Happ's
660 * UGCI) cram a lot of unrelated inputs into the
661 * same interface. */
662 hidinput->report = report;
663 input_register_device(hidinput->input);
664 hidinput = NULL;
665 }
666 }
667
668 /* This only gets called when we are a single-input (most of the
669 * time). IOW, not a HID_QUIRK_MULTI_INPUT. The hid_ff_init() is
670 * only useful in this case, and not for multi-input quirks. */
671 if (hidinput) {
672 hid_ff_init(hid);
673 input_register_device(hidinput->input);
674 }
675
676 return 0;
677}
678
679void hidinput_disconnect(struct hid_device *hid)
680{
681 struct hid_input *hidinput, *next;
682
683 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
684 list_del(&hidinput->list);
685 input_unregister_device(hidinput->input);
686 kfree(hidinput);
687 }
688}