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 #include "hid-ids.h"
36
37 #define unk KEY_UNKNOWN
38
39 static const unsigned char hid_keyboard[256] = {
40 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
41 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
42 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
43 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
44 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
45 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
46 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
47 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
48 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
49 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,
50 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
51 unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk,
52 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
53 unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk,
54 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
55 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
56 };
57
58 static const struct {
59 __s32 x;
60 __s32 y;
61 } hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
62
63 #define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
64 #define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
65 #define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
66 #define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
67
68 #define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
69 &max, EV_ABS, (c))
70 #define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
71 &max, EV_KEY, (c))
72
match_scancode(struct hid_usage * usage,unsigned int cur_idx,unsigned int scancode)73 static bool match_scancode(struct hid_usage *usage,
74 unsigned int cur_idx, unsigned int scancode)
75 {
76 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
77 }
78
match_keycode(struct hid_usage * usage,unsigned int cur_idx,unsigned int keycode)79 static bool match_keycode(struct hid_usage *usage,
80 unsigned int cur_idx, unsigned int keycode)
81 {
82 /*
83 * We should exclude unmapped usages when doing lookup by keycode.
84 */
85 return (usage->type == EV_KEY && usage->code == keycode);
86 }
87
match_index(struct hid_usage * usage,unsigned int cur_idx,unsigned int idx)88 static bool match_index(struct hid_usage *usage,
89 unsigned int cur_idx, unsigned int idx)
90 {
91 return cur_idx == idx;
92 }
93
94 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
95 unsigned int cur_idx, unsigned int val);
96
hidinput_find_key(struct hid_device * hid,hid_usage_cmp_t match,unsigned int value,unsigned int * usage_idx)97 static struct hid_usage *hidinput_find_key(struct hid_device *hid,
98 hid_usage_cmp_t match,
99 unsigned int value,
100 unsigned int *usage_idx)
101 {
102 unsigned int i, j, k, cur_idx = 0;
103 struct hid_report *report;
104 struct hid_usage *usage;
105
106 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
107 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
108 for (i = 0; i < report->maxfield; i++) {
109 for (j = 0; j < report->field[i]->maxusage; j++) {
110 usage = report->field[i]->usage + j;
111 if (usage->type == EV_KEY || usage->type == 0) {
112 if (match(usage, cur_idx, value)) {
113 if (usage_idx)
114 *usage_idx = cur_idx;
115 return usage;
116 }
117 cur_idx++;
118 }
119 }
120 }
121 }
122 }
123 return NULL;
124 }
125
hidinput_locate_usage(struct hid_device * hid,const struct input_keymap_entry * ke,unsigned int * index)126 static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
127 const struct input_keymap_entry *ke,
128 unsigned int *index)
129 {
130 struct hid_usage *usage;
131 unsigned int scancode;
132
133 if (ke->flags & INPUT_KEYMAP_BY_INDEX)
134 usage = hidinput_find_key(hid, match_index, ke->index, index);
135 else if (input_scancode_to_scalar(ke, &scancode) == 0)
136 usage = hidinput_find_key(hid, match_scancode, scancode, index);
137 else
138 usage = NULL;
139
140 return usage;
141 }
142
hidinput_getkeycode(struct input_dev * dev,struct input_keymap_entry * ke)143 static int hidinput_getkeycode(struct input_dev *dev,
144 struct input_keymap_entry *ke)
145 {
146 struct hid_device *hid = input_get_drvdata(dev);
147 struct hid_usage *usage;
148 unsigned int scancode, index;
149
150 usage = hidinput_locate_usage(hid, ke, &index);
151 if (usage) {
152 ke->keycode = usage->type == EV_KEY ?
153 usage->code : KEY_RESERVED;
154 ke->index = index;
155 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
156 ke->len = sizeof(scancode);
157 memcpy(ke->scancode, &scancode, sizeof(scancode));
158 return 0;
159 }
160
161 return -EINVAL;
162 }
163
hidinput_setkeycode(struct input_dev * dev,const struct input_keymap_entry * ke,unsigned int * old_keycode)164 static int hidinput_setkeycode(struct input_dev *dev,
165 const struct input_keymap_entry *ke,
166 unsigned int *old_keycode)
167 {
168 struct hid_device *hid = input_get_drvdata(dev);
169 struct hid_usage *usage;
170
171 usage = hidinput_locate_usage(hid, ke, NULL);
172 if (usage) {
173 *old_keycode = usage->type == EV_KEY ?
174 usage->code : KEY_RESERVED;
175 usage->code = ke->keycode;
176
177 clear_bit(*old_keycode, dev->keybit);
178 set_bit(usage->code, dev->keybit);
179 dbg_hid("Assigned keycode %d to HID usage code %x\n",
180 usage->code, usage->hid);
181
182 /*
183 * Set the keybit for the old keycode if the old keycode is used
184 * by another key
185 */
186 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
187 set_bit(*old_keycode, dev->keybit);
188
189 return 0;
190 }
191
192 return -EINVAL;
193 }
194
195
196 /**
197 * hidinput_calc_abs_res - calculate an absolute axis resolution
198 * @field: the HID report field to calculate resolution for
199 * @code: axis code
200 *
201 * The formula is:
202 * (logical_maximum - logical_minimum)
203 * resolution = ----------------------------------------------------------
204 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent
205 *
206 * as seen in the HID specification v1.11 6.2.2.7 Global Items.
207 *
208 * Only exponent 1 length units are processed. Centimeters and inches are
209 * converted to millimeters. Degrees are converted to radians.
210 */
hidinput_calc_abs_res(const struct hid_field * field,__u16 code)211 static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
212 {
213 __s32 unit_exponent = field->unit_exponent;
214 __s32 logical_extents = field->logical_maximum -
215 field->logical_minimum;
216 __s32 physical_extents = field->physical_maximum -
217 field->physical_minimum;
218 __s32 prev;
219
220 /* Check if the extents are sane */
221 if (logical_extents <= 0 || physical_extents <= 0)
222 return 0;
223
224 /*
225 * Verify and convert units.
226 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
227 */
228 if (code == ABS_X || code == ABS_Y || code == ABS_Z) {
229 if (field->unit == 0x11) { /* If centimeters */
230 /* Convert to millimeters */
231 unit_exponent += 1;
232 } else if (field->unit == 0x13) { /* If inches */
233 /* Convert to millimeters */
234 prev = physical_extents;
235 physical_extents *= 254;
236 if (physical_extents < prev)
237 return 0;
238 unit_exponent -= 1;
239 } else {
240 return 0;
241 }
242 } else if (code == ABS_RX || code == ABS_RY || code == ABS_RZ) {
243 if (field->unit == 0x14) { /* If degrees */
244 /* Convert to radians */
245 prev = logical_extents;
246 logical_extents *= 573;
247 if (logical_extents < prev)
248 return 0;
249 unit_exponent += 1;
250 } else if (field->unit != 0x12) { /* If not radians */
251 return 0;
252 }
253 } else {
254 return 0;
255 }
256
257 /* Apply negative unit exponent */
258 for (; unit_exponent < 0; unit_exponent++) {
259 prev = logical_extents;
260 logical_extents *= 10;
261 if (logical_extents < prev)
262 return 0;
263 }
264 /* Apply positive unit exponent */
265 for (; unit_exponent > 0; unit_exponent--) {
266 prev = physical_extents;
267 physical_extents *= 10;
268 if (physical_extents < prev)
269 return 0;
270 }
271
272 /* Calculate resolution */
273 return logical_extents / physical_extents;
274 }
275
276 #ifdef CONFIG_HID_BATTERY_STRENGTH
277 static enum power_supply_property hidinput_battery_props[] = {
278 POWER_SUPPLY_PROP_PRESENT,
279 POWER_SUPPLY_PROP_ONLINE,
280 POWER_SUPPLY_PROP_CAPACITY,
281 POWER_SUPPLY_PROP_MODEL_NAME,
282 POWER_SUPPLY_PROP_STATUS,
283 POWER_SUPPLY_PROP_SCOPE,
284 };
285
286 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
287 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
288
289 static const struct hid_device_id hid_battery_quirks[] = {
290 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
291 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
292 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
293 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
294 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
295 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
296 {}
297 };
298
find_battery_quirk(struct hid_device * hdev)299 static unsigned find_battery_quirk(struct hid_device *hdev)
300 {
301 unsigned quirks = 0;
302 const struct hid_device_id *match;
303
304 match = hid_match_id(hdev, hid_battery_quirks);
305 if (match != NULL)
306 quirks = match->driver_data;
307
308 return quirks;
309 }
310
hidinput_get_battery_property(struct power_supply * psy,enum power_supply_property prop,union power_supply_propval * val)311 static int hidinput_get_battery_property(struct power_supply *psy,
312 enum power_supply_property prop,
313 union power_supply_propval *val)
314 {
315 struct hid_device *dev = container_of(psy, struct hid_device, battery);
316 int ret = 0;
317 __u8 *buf;
318
319 switch (prop) {
320 case POWER_SUPPLY_PROP_PRESENT:
321 case POWER_SUPPLY_PROP_ONLINE:
322 val->intval = 1;
323 break;
324
325 case POWER_SUPPLY_PROP_CAPACITY:
326
327 buf = kmalloc(2 * sizeof(__u8), GFP_KERNEL);
328 if (!buf) {
329 ret = -ENOMEM;
330 break;
331 }
332 ret = dev->hid_get_raw_report(dev, dev->battery_report_id,
333 buf, 2,
334 dev->battery_report_type);
335
336 if (ret != 2) {
337 if (ret >= 0)
338 ret = -EINVAL;
339 kfree(buf);
340 break;
341 }
342
343 if (dev->battery_min < dev->battery_max &&
344 buf[1] >= dev->battery_min &&
345 buf[1] <= dev->battery_max)
346 val->intval = (100 * (buf[1] - dev->battery_min)) /
347 (dev->battery_max - dev->battery_min);
348 kfree(buf);
349 break;
350
351 case POWER_SUPPLY_PROP_MODEL_NAME:
352 val->strval = dev->name;
353 break;
354
355 case POWER_SUPPLY_PROP_STATUS:
356 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
357 break;
358
359 case POWER_SUPPLY_PROP_SCOPE:
360 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
361 break;
362
363 default:
364 ret = -EINVAL;
365 break;
366 }
367
368 return ret;
369 }
370
hidinput_setup_battery(struct hid_device * dev,unsigned report_type,struct hid_field * field)371 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
372 {
373 struct power_supply *battery = &dev->battery;
374 int ret;
375 unsigned quirks;
376 s32 min, max;
377
378 if (field->usage->hid != HID_DC_BATTERYSTRENGTH)
379 return false; /* no match */
380
381 if (battery->name != NULL)
382 goto out; /* already initialized? */
383
384 battery->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq);
385 if (battery->name == NULL)
386 goto out;
387
388 battery->type = POWER_SUPPLY_TYPE_BATTERY;
389 battery->properties = hidinput_battery_props;
390 battery->num_properties = ARRAY_SIZE(hidinput_battery_props);
391 battery->use_for_apm = 0;
392 battery->get_property = hidinput_get_battery_property;
393
394 quirks = find_battery_quirk(dev);
395
396 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
397 dev->bus, dev->vendor, dev->product, dev->version, quirks);
398
399 min = field->logical_minimum;
400 max = field->logical_maximum;
401
402 if (quirks & HID_BATTERY_QUIRK_PERCENT) {
403 min = 0;
404 max = 100;
405 }
406
407 if (quirks & HID_BATTERY_QUIRK_FEATURE)
408 report_type = HID_FEATURE_REPORT;
409
410 dev->battery_min = min;
411 dev->battery_max = max;
412 dev->battery_report_type = report_type;
413 dev->battery_report_id = field->report->id;
414
415 ret = power_supply_register(&dev->dev, battery);
416 if (ret != 0) {
417 hid_warn(dev, "can't register power supply: %d\n", ret);
418 kfree(battery->name);
419 battery->name = NULL;
420 }
421
422 power_supply_powers(battery, &dev->dev);
423
424 out:
425 return true;
426 }
427
hidinput_cleanup_battery(struct hid_device * dev)428 static void hidinput_cleanup_battery(struct hid_device *dev)
429 {
430 if (!dev->battery.name)
431 return;
432
433 power_supply_unregister(&dev->battery);
434 kfree(dev->battery.name);
435 dev->battery.name = NULL;
436 }
437 #else /* !CONFIG_HID_BATTERY_STRENGTH */
hidinput_setup_battery(struct hid_device * dev,unsigned report_type,struct hid_field * field)438 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
439 struct hid_field *field)
440 {
441 return false;
442 }
443
hidinput_cleanup_battery(struct hid_device * dev)444 static void hidinput_cleanup_battery(struct hid_device *dev)
445 {
446 }
447 #endif /* CONFIG_HID_BATTERY_STRENGTH */
448
hidinput_configure_usage(struct hid_input * hidinput,struct hid_field * field,struct hid_usage * usage)449 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
450 struct hid_usage *usage)
451 {
452 struct input_dev *input = hidinput->input;
453 struct hid_device *device = input_get_drvdata(input);
454 int max = 0, code;
455 unsigned long *bit = NULL;
456
457 field->hidinput = hidinput;
458
459 if (field->flags & HID_MAIN_ITEM_CONSTANT)
460 goto ignore;
461
462 /* Ignore if report count is out of bounds. */
463 if (field->report_count < 1)
464 goto ignore;
465
466 /* only LED usages are supported in output fields */
467 if (field->report_type == HID_OUTPUT_REPORT &&
468 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
469 goto ignore;
470 }
471
472 if (device->driver->input_mapping) {
473 int ret = device->driver->input_mapping(device, hidinput, field,
474 usage, &bit, &max);
475 if (ret > 0)
476 goto mapped;
477 if (ret < 0)
478 goto ignore;
479 }
480
481 switch (usage->hid & HID_USAGE_PAGE) {
482 case HID_UP_UNDEFINED:
483 goto ignore;
484
485 case HID_UP_KEYBOARD:
486 set_bit(EV_REP, input->evbit);
487
488 if ((usage->hid & HID_USAGE) < 256) {
489 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
490 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
491 } else
492 map_key(KEY_UNKNOWN);
493
494 break;
495
496 case HID_UP_BUTTON:
497 code = ((usage->hid - 1) & HID_USAGE);
498
499 switch (field->application) {
500 case HID_GD_MOUSE:
501 case HID_GD_POINTER: code += BTN_MOUSE; break;
502 case HID_GD_JOYSTICK:
503 if (code <= 0xf)
504 code += BTN_JOYSTICK;
505 else
506 code += BTN_TRIGGER_HAPPY;
507 break;
508 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
509 default:
510 switch (field->physical) {
511 case HID_GD_MOUSE:
512 case HID_GD_POINTER: code += BTN_MOUSE; break;
513 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
514 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
515 default: code += BTN_MISC;
516 }
517 }
518
519 map_key(code);
520 break;
521
522 case HID_UP_SIMULATION:
523 switch (usage->hid & 0xffff) {
524 case 0xba: map_abs(ABS_RUDDER); break;
525 case 0xbb: map_abs(ABS_THROTTLE); break;
526 case 0xc4: map_abs(ABS_GAS); break;
527 case 0xc5: map_abs(ABS_BRAKE); break;
528 case 0xc8: map_abs(ABS_WHEEL); break;
529 default: goto ignore;
530 }
531 break;
532
533 case HID_UP_GENDESK:
534 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
535 switch (usage->hid & 0xf) {
536 case 0x1: map_key_clear(KEY_POWER); break;
537 case 0x2: map_key_clear(KEY_SLEEP); break;
538 case 0x3: map_key_clear(KEY_WAKEUP); break;
539 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
540 case 0x5: map_key_clear(KEY_MENU); break;
541 case 0x6: map_key_clear(KEY_PROG1); break;
542 case 0x7: map_key_clear(KEY_HELP); break;
543 case 0x8: map_key_clear(KEY_EXIT); break;
544 case 0x9: map_key_clear(KEY_SELECT); break;
545 case 0xa: map_key_clear(KEY_RIGHT); break;
546 case 0xb: map_key_clear(KEY_LEFT); break;
547 case 0xc: map_key_clear(KEY_UP); break;
548 case 0xd: map_key_clear(KEY_DOWN); break;
549 case 0xe: map_key_clear(KEY_POWER2); break;
550 case 0xf: map_key_clear(KEY_RESTART); break;
551 default: goto unknown;
552 }
553 break;
554 }
555
556 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
557 switch (usage->hid) {
558 case HID_GD_UP: usage->hat_dir = 1; break;
559 case HID_GD_DOWN: usage->hat_dir = 5; break;
560 case HID_GD_RIGHT: usage->hat_dir = 3; break;
561 case HID_GD_LEFT: usage->hat_dir = 7; break;
562 default: goto unknown;
563 }
564 if (field->dpad) {
565 map_abs(field->dpad);
566 goto ignore;
567 }
568 map_abs(ABS_HAT0X);
569 break;
570 }
571
572 switch (usage->hid) {
573 /* These usage IDs map directly to the usage codes. */
574 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
575 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
576 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
577 if (field->flags & HID_MAIN_ITEM_RELATIVE)
578 map_rel(usage->hid & 0xf);
579 else
580 map_abs(usage->hid & 0xf);
581 break;
582
583 case HID_GD_HATSWITCH:
584 usage->hat_min = field->logical_minimum;
585 usage->hat_max = field->logical_maximum;
586 map_abs(ABS_HAT0X);
587 break;
588
589 case HID_GD_START: map_key_clear(BTN_START); break;
590 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
591
592 default: goto unknown;
593 }
594
595 break;
596
597 case HID_UP_LED:
598 switch (usage->hid & 0xffff) { /* HID-Value: */
599 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
600 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
601 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
602 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
603 case 0x05: map_led (LED_KANA); break; /* "Kana" */
604 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
605 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
606 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
607 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
608 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
609 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
610
611 default: goto ignore;
612 }
613 break;
614
615 case HID_UP_DIGITIZER:
616 switch (usage->hid & 0xff) {
617 case 0x00: /* Undefined */
618 goto ignore;
619
620 case 0x30: /* TipPressure */
621 if (!test_bit(BTN_TOUCH, input->keybit)) {
622 device->quirks |= HID_QUIRK_NOTOUCH;
623 set_bit(EV_KEY, input->evbit);
624 set_bit(BTN_TOUCH, input->keybit);
625 }
626 map_abs_clear(ABS_PRESSURE);
627 break;
628
629 case 0x32: /* InRange */
630 switch (field->physical & 0xff) {
631 case 0x21: map_key(BTN_TOOL_MOUSE); break;
632 case 0x22: map_key(BTN_TOOL_FINGER); break;
633 default: map_key(BTN_TOOL_PEN); break;
634 }
635 break;
636
637 case 0x3c: /* Invert */
638 map_key_clear(BTN_TOOL_RUBBER);
639 break;
640
641 case 0x33: /* Touch */
642 case 0x42: /* TipSwitch */
643 case 0x43: /* TipSwitch2 */
644 device->quirks &= ~HID_QUIRK_NOTOUCH;
645 map_key_clear(BTN_TOUCH);
646 break;
647
648 case 0x44: /* BarrelSwitch */
649 map_key_clear(BTN_STYLUS);
650 break;
651
652 case 0x46: /* TabletPick */
653 map_key_clear(BTN_STYLUS2);
654 break;
655
656 case 0x51: /* ContactID */
657 device->quirks |= HID_QUIRK_MULTITOUCH;
658 goto unknown;
659
660 default: goto unknown;
661 }
662 break;
663
664 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
665 switch (usage->hid & HID_USAGE) {
666 case 0x000: goto ignore;
667 case 0x030: map_key_clear(KEY_POWER); break;
668 case 0x031: map_key_clear(KEY_RESTART); break;
669 case 0x032: map_key_clear(KEY_SLEEP); break;
670 case 0x034: map_key_clear(KEY_SLEEP); break;
671 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
672 case 0x036: map_key_clear(BTN_MISC); break;
673
674 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
675 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
676 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
677 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
678 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
679 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
680 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
681 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
682 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
683
684 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
685 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
686 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
687 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
688 case 0x069: map_key_clear(KEY_RED); break;
689 case 0x06a: map_key_clear(KEY_GREEN); break;
690 case 0x06b: map_key_clear(KEY_BLUE); break;
691 case 0x06c: map_key_clear(KEY_YELLOW); break;
692 case 0x06d: map_key_clear(KEY_ZOOM); break;
693
694 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
695 case 0x083: map_key_clear(KEY_LAST); break;
696 case 0x084: map_key_clear(KEY_ENTER); break;
697 case 0x088: map_key_clear(KEY_PC); break;
698 case 0x089: map_key_clear(KEY_TV); break;
699 case 0x08a: map_key_clear(KEY_WWW); break;
700 case 0x08b: map_key_clear(KEY_DVD); break;
701 case 0x08c: map_key_clear(KEY_PHONE); break;
702 case 0x08d: map_key_clear(KEY_PROGRAM); break;
703 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
704 case 0x08f: map_key_clear(KEY_GAMES); break;
705 case 0x090: map_key_clear(KEY_MEMO); break;
706 case 0x091: map_key_clear(KEY_CD); break;
707 case 0x092: map_key_clear(KEY_VCR); break;
708 case 0x093: map_key_clear(KEY_TUNER); break;
709 case 0x094: map_key_clear(KEY_EXIT); break;
710 case 0x095: map_key_clear(KEY_HELP); break;
711 case 0x096: map_key_clear(KEY_TAPE); break;
712 case 0x097: map_key_clear(KEY_TV2); break;
713 case 0x098: map_key_clear(KEY_SAT); break;
714 case 0x09a: map_key_clear(KEY_PVR); break;
715
716 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
717 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
718 case 0x0a0: map_key_clear(KEY_VCR2); break;
719
720 case 0x0b0: map_key_clear(KEY_PLAY); break;
721 case 0x0b1: map_key_clear(KEY_PAUSE); break;
722 case 0x0b2: map_key_clear(KEY_RECORD); break;
723 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
724 case 0x0b4: map_key_clear(KEY_REWIND); break;
725 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
726 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
727 case 0x0b7: map_key_clear(KEY_STOPCD); break;
728 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
729 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
730 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
731 case 0x0bf: map_key_clear(KEY_SLOW); break;
732
733 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
734 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
735 case 0x0e2: map_key_clear(KEY_MUTE); break;
736 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
737 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
738 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
739 case 0x0f5: map_key_clear(KEY_SLOW); break;
740
741 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
742 case 0x183: map_key_clear(KEY_CONFIG); break;
743 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
744 case 0x185: map_key_clear(KEY_EDITOR); break;
745 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
746 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
747 case 0x188: map_key_clear(KEY_PRESENTATION); break;
748 case 0x189: map_key_clear(KEY_DATABASE); break;
749 case 0x18a: map_key_clear(KEY_MAIL); break;
750 case 0x18b: map_key_clear(KEY_NEWS); break;
751 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
752 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
753 case 0x18e: map_key_clear(KEY_CALENDAR); break;
754 case 0x191: map_key_clear(KEY_FINANCE); break;
755 case 0x192: map_key_clear(KEY_CALC); break;
756 case 0x193: map_key_clear(KEY_PLAYER); break;
757 case 0x194: map_key_clear(KEY_FILE); break;
758 case 0x196: map_key_clear(KEY_WWW); break;
759 case 0x199: map_key_clear(KEY_CHAT); break;
760 case 0x19c: map_key_clear(KEY_LOGOFF); break;
761 case 0x19e: map_key_clear(KEY_COFFEE); break;
762 case 0x1a6: map_key_clear(KEY_HELP); break;
763 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
764 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
765 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
766 case 0x1b6: map_key_clear(KEY_IMAGES); break;
767 case 0x1b7: map_key_clear(KEY_AUDIO); break;
768 case 0x1b8: map_key_clear(KEY_VIDEO); break;
769 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
770 case 0x1bd: map_key_clear(KEY_INFO); break;
771 case 0x201: map_key_clear(KEY_NEW); break;
772 case 0x202: map_key_clear(KEY_OPEN); break;
773 case 0x203: map_key_clear(KEY_CLOSE); break;
774 case 0x204: map_key_clear(KEY_EXIT); break;
775 case 0x207: map_key_clear(KEY_SAVE); break;
776 case 0x208: map_key_clear(KEY_PRINT); break;
777 case 0x209: map_key_clear(KEY_PROPS); break;
778 case 0x21a: map_key_clear(KEY_UNDO); break;
779 case 0x21b: map_key_clear(KEY_COPY); break;
780 case 0x21c: map_key_clear(KEY_CUT); break;
781 case 0x21d: map_key_clear(KEY_PASTE); break;
782 case 0x21f: map_key_clear(KEY_FIND); break;
783 case 0x221: map_key_clear(KEY_SEARCH); break;
784 case 0x222: map_key_clear(KEY_GOTO); break;
785 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
786 case 0x224: map_key_clear(KEY_BACK); break;
787 case 0x225: map_key_clear(KEY_FORWARD); break;
788 case 0x226: map_key_clear(KEY_STOP); break;
789 case 0x227: map_key_clear(KEY_REFRESH); break;
790 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
791 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
792 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
793 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
794 case 0x233: map_key_clear(KEY_SCROLLUP); break;
795 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
796 case 0x238: map_rel(REL_HWHEEL); break;
797 case 0x23d: map_key_clear(KEY_EDIT); break;
798 case 0x25f: map_key_clear(KEY_CANCEL); break;
799 case 0x269: map_key_clear(KEY_INSERT); break;
800 case 0x26a: map_key_clear(KEY_DELETE); break;
801 case 0x279: map_key_clear(KEY_REDO); break;
802
803 case 0x289: map_key_clear(KEY_REPLY); break;
804 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
805 case 0x28c: map_key_clear(KEY_SEND); break;
806
807 default: goto ignore;
808 }
809 break;
810
811 case HID_UP_GENDEVCTRLS:
812 if (hidinput_setup_battery(device, HID_INPUT_REPORT, field))
813 goto ignore;
814 else
815 goto unknown;
816 break;
817
818 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
819 set_bit(EV_REP, input->evbit);
820 switch (usage->hid & HID_USAGE) {
821 case 0x021: map_key_clear(KEY_PRINT); break;
822 case 0x070: map_key_clear(KEY_HP); break;
823 case 0x071: map_key_clear(KEY_CAMERA); break;
824 case 0x072: map_key_clear(KEY_SOUND); break;
825 case 0x073: map_key_clear(KEY_QUESTION); break;
826 case 0x080: map_key_clear(KEY_EMAIL); break;
827 case 0x081: map_key_clear(KEY_CHAT); break;
828 case 0x082: map_key_clear(KEY_SEARCH); break;
829 case 0x083: map_key_clear(KEY_CONNECT); break;
830 case 0x084: map_key_clear(KEY_FINANCE); break;
831 case 0x085: map_key_clear(KEY_SPORT); break;
832 case 0x086: map_key_clear(KEY_SHOP); break;
833 default: goto ignore;
834 }
835 break;
836
837 case HID_UP_MSVENDOR:
838 goto ignore;
839
840 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
841 set_bit(EV_REP, input->evbit);
842 goto ignore;
843
844 case HID_UP_LOGIVENDOR:
845 goto ignore;
846
847 case HID_UP_PID:
848 switch (usage->hid & HID_USAGE) {
849 case 0xa4: map_key_clear(BTN_DEAD); break;
850 default: goto ignore;
851 }
852 break;
853
854 default:
855 unknown:
856 if (field->report_size == 1) {
857 if (field->report->type == HID_OUTPUT_REPORT) {
858 map_led(LED_MISC);
859 break;
860 }
861 map_key(BTN_MISC);
862 break;
863 }
864 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
865 map_rel(REL_MISC);
866 break;
867 }
868 map_abs(ABS_MISC);
869 break;
870 }
871
872 mapped:
873 if (device->driver->input_mapped && device->driver->input_mapped(device,
874 hidinput, field, usage, &bit, &max) < 0)
875 goto ignore;
876
877 set_bit(usage->type, input->evbit);
878
879 while (usage->code <= max && test_and_set_bit(usage->code, bit))
880 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
881
882 if (usage->code > max)
883 goto ignore;
884
885
886 if (usage->type == EV_ABS) {
887
888 int a = field->logical_minimum;
889 int b = field->logical_maximum;
890
891 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
892 a = field->logical_minimum = 0;
893 b = field->logical_maximum = 255;
894 }
895
896 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
897 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
898 else input_set_abs_params(input, usage->code, a, b, 0, 0);
899
900 input_abs_set_res(input, usage->code,
901 hidinput_calc_abs_res(field, usage->code));
902
903 /* use a larger default input buffer for MT devices */
904 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
905 input_set_events_per_packet(input, 60);
906 }
907
908 if (usage->type == EV_ABS &&
909 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
910 int i;
911 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
912 input_set_abs_params(input, i, -1, 1, 0, 0);
913 set_bit(i, input->absbit);
914 }
915 if (usage->hat_dir && !field->dpad)
916 field->dpad = usage->code;
917 }
918
919 /* for those devices which produce Consumer volume usage as relative,
920 * we emulate pressing volumeup/volumedown appropriate number of times
921 * in hidinput_hid_event()
922 */
923 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
924 (usage->code == ABS_VOLUME)) {
925 set_bit(KEY_VOLUMEUP, input->keybit);
926 set_bit(KEY_VOLUMEDOWN, input->keybit);
927 }
928
929 if (usage->type == EV_KEY) {
930 set_bit(EV_MSC, input->evbit);
931 set_bit(MSC_SCAN, input->mscbit);
932 }
933
934 ignore:
935 return;
936
937 }
938
hidinput_hid_event(struct hid_device * hid,struct hid_field * field,struct hid_usage * usage,__s32 value)939 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
940 {
941 struct input_dev *input;
942 unsigned *quirks = &hid->quirks;
943
944 if (!field->hidinput)
945 return;
946
947 input = field->hidinput->input;
948
949 if (!usage->type)
950 return;
951
952 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
953 int hat_dir = usage->hat_dir;
954 if (!hat_dir)
955 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
956 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
957 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
958 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
959 return;
960 }
961
962 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
963 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
964 return;
965 }
966
967 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
968 if (value) {
969 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
970 return;
971 }
972 input_event(input, usage->type, usage->code, 0);
973 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
974 return;
975 }
976
977 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
978 int a = field->logical_minimum;
979 int b = field->logical_maximum;
980 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
981 }
982
983 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
984 dbg_hid("Maximum Effects - %d\n",value);
985 return;
986 }
987
988 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
989 dbg_hid("PID Pool Report\n");
990 return;
991 }
992
993 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
994 return;
995
996 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
997 (usage->code == ABS_VOLUME)) {
998 int count = abs(value);
999 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1000 int i;
1001
1002 for (i = 0; i < count; i++) {
1003 input_event(input, EV_KEY, direction, 1);
1004 input_sync(input);
1005 input_event(input, EV_KEY, direction, 0);
1006 input_sync(input);
1007 }
1008 return;
1009 }
1010
1011 /*
1012 * Ignore out-of-range values as per HID specification,
1013 * section 5.10 and 6.2.25
1014 */
1015 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1016 (value < field->logical_minimum ||
1017 value > field->logical_maximum)) {
1018 dbg_hid("Ignoring out-of-range value %x\n", value);
1019 return;
1020 }
1021
1022 /* report the usage code as scancode if the key status has changed */
1023 if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
1024 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1025
1026 input_event(input, usage->type, usage->code, value);
1027
1028 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
1029 input_event(input, usage->type, usage->code, 0);
1030 }
1031
hidinput_report_event(struct hid_device * hid,struct hid_report * report)1032 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1033 {
1034 struct hid_input *hidinput;
1035
1036 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1037 return;
1038
1039 list_for_each_entry(hidinput, &hid->inputs, list)
1040 input_sync(hidinput->input);
1041 }
1042 EXPORT_SYMBOL_GPL(hidinput_report_event);
1043
hidinput_find_field(struct hid_device * hid,unsigned int type,unsigned int code,struct hid_field ** field)1044 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1045 {
1046 struct hid_report *report;
1047 int i, j;
1048
1049 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1050 for (i = 0; i < report->maxfield; i++) {
1051 *field = report->field[i];
1052 for (j = 0; j < (*field)->maxusage; j++)
1053 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1054 return j;
1055 }
1056 }
1057 return -1;
1058 }
1059 EXPORT_SYMBOL_GPL(hidinput_find_field);
1060
hidinput_get_led_field(struct hid_device * hid)1061 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1062 {
1063 struct hid_report *report;
1064 struct hid_field *field;
1065 int i, j;
1066
1067 list_for_each_entry(report,
1068 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1069 list) {
1070 for (i = 0; i < report->maxfield; i++) {
1071 field = report->field[i];
1072 for (j = 0; j < field->maxusage; j++)
1073 if (field->usage[j].type == EV_LED)
1074 return field;
1075 }
1076 }
1077 return NULL;
1078 }
1079 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1080
hidinput_count_leds(struct hid_device * hid)1081 unsigned int hidinput_count_leds(struct hid_device *hid)
1082 {
1083 struct hid_report *report;
1084 struct hid_field *field;
1085 int i, j;
1086 unsigned int count = 0;
1087
1088 list_for_each_entry(report,
1089 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1090 list) {
1091 for (i = 0; i < report->maxfield; i++) {
1092 field = report->field[i];
1093 for (j = 0; j < field->maxusage; j++)
1094 if (field->usage[j].type == EV_LED &&
1095 field->value[j])
1096 count += 1;
1097 }
1098 }
1099 return count;
1100 }
1101 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1102
hidinput_open(struct input_dev * dev)1103 static int hidinput_open(struct input_dev *dev)
1104 {
1105 struct hid_device *hid = input_get_drvdata(dev);
1106
1107 return hid_hw_open(hid);
1108 }
1109
hidinput_close(struct input_dev * dev)1110 static void hidinput_close(struct input_dev *dev)
1111 {
1112 struct hid_device *hid = input_get_drvdata(dev);
1113
1114 hid_hw_close(hid);
1115 }
1116
report_features(struct hid_device * hid)1117 static void report_features(struct hid_device *hid)
1118 {
1119 struct hid_driver *drv = hid->driver;
1120 struct hid_report_enum *rep_enum;
1121 struct hid_report *rep;
1122 int i, j;
1123
1124 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1125 list_for_each_entry(rep, &rep_enum->report_list, list)
1126 for (i = 0; i < rep->maxfield; i++) {
1127
1128 /* Ignore if report count is out of bounds. */
1129 if (rep->field[i]->report_count < 1)
1130 continue;
1131
1132 for (j = 0; j < rep->field[i]->maxusage; j++) {
1133 /* Verify if Battery Strength feature is available */
1134 hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);
1135
1136 if (drv->feature_mapping)
1137 drv->feature_mapping(hid, rep->field[i],
1138 rep->field[i]->usage + j);
1139 }
1140 }
1141 }
1142
1143 /*
1144 * Register the input device; print a message.
1145 * Configure the input layer interface
1146 * Read all reports and initialize the absolute field values.
1147 */
1148
hidinput_connect(struct hid_device * hid,unsigned int force)1149 int hidinput_connect(struct hid_device *hid, unsigned int force)
1150 {
1151 struct hid_report *report;
1152 struct hid_input *hidinput = NULL;
1153 struct input_dev *input_dev;
1154 int i, j, k;
1155
1156 INIT_LIST_HEAD(&hid->inputs);
1157
1158 if (!force) {
1159 for (i = 0; i < hid->maxcollection; i++) {
1160 struct hid_collection *col = &hid->collection[i];
1161 if (col->type == HID_COLLECTION_APPLICATION ||
1162 col->type == HID_COLLECTION_PHYSICAL)
1163 if (IS_INPUT_APPLICATION(col->usage))
1164 break;
1165 }
1166
1167 if (i == hid->maxcollection)
1168 return -1;
1169 }
1170
1171 report_features(hid);
1172
1173 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1174 if (k == HID_OUTPUT_REPORT &&
1175 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1176 continue;
1177
1178 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1179
1180 if (!report->maxfield)
1181 continue;
1182
1183 if (!hidinput) {
1184 hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1185 input_dev = input_allocate_device();
1186 if (!hidinput || !input_dev) {
1187 kfree(hidinput);
1188 input_free_device(input_dev);
1189 hid_err(hid, "Out of memory during hid input probe\n");
1190 goto out_unwind;
1191 }
1192
1193 input_set_drvdata(input_dev, hid);
1194 input_dev->event =
1195 hid->ll_driver->hidinput_input_event;
1196 input_dev->open = hidinput_open;
1197 input_dev->close = hidinput_close;
1198 input_dev->setkeycode = hidinput_setkeycode;
1199 input_dev->getkeycode = hidinput_getkeycode;
1200
1201 input_dev->name = hid->name;
1202 input_dev->phys = hid->phys;
1203 input_dev->uniq = hid->uniq;
1204 input_dev->id.bustype = hid->bus;
1205 input_dev->id.vendor = hid->vendor;
1206 input_dev->id.product = hid->product;
1207 input_dev->id.version = hid->version;
1208 input_dev->dev.parent = hid->dev.parent;
1209 hidinput->input = input_dev;
1210 list_add_tail(&hidinput->list, &hid->inputs);
1211 }
1212
1213 for (i = 0; i < report->maxfield; i++)
1214 for (j = 0; j < report->field[i]->maxusage; j++)
1215 hidinput_configure_usage(hidinput, report->field[i],
1216 report->field[i]->usage + j);
1217
1218 if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
1219 /* This will leave hidinput NULL, so that it
1220 * allocates another one if we have more inputs on
1221 * the same interface. Some devices (e.g. Happ's
1222 * UGCI) cram a lot of unrelated inputs into the
1223 * same interface. */
1224 hidinput->report = report;
1225 if (input_register_device(hidinput->input))
1226 goto out_cleanup;
1227 hidinput = NULL;
1228 }
1229 }
1230 }
1231
1232 if (hid->quirks & HID_QUIRK_MULTITOUCH) {
1233 /* generic hid does not know how to handle multitouch devices */
1234 if (hidinput)
1235 goto out_cleanup;
1236 goto out_unwind;
1237 }
1238
1239 if (hidinput && input_register_device(hidinput->input))
1240 goto out_cleanup;
1241
1242 return 0;
1243
1244 out_cleanup:
1245 list_del(&hidinput->list);
1246 input_free_device(hidinput->input);
1247 kfree(hidinput);
1248 out_unwind:
1249 /* unwind the ones we already registered */
1250 hidinput_disconnect(hid);
1251
1252 return -1;
1253 }
1254 EXPORT_SYMBOL_GPL(hidinput_connect);
1255
hidinput_disconnect(struct hid_device * hid)1256 void hidinput_disconnect(struct hid_device *hid)
1257 {
1258 struct hid_input *hidinput, *next;
1259
1260 hidinput_cleanup_battery(hid);
1261
1262 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1263 list_del(&hidinput->list);
1264 input_unregister_device(hidinput->input);
1265 kfree(hidinput);
1266 }
1267 }
1268 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1269
1270