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Merge branches 'for-4.0/upstream-fixes', 'for-4.1/genius', 'for-4.1/huion-uclogic...
[deliverable/linux.git] / drivers / hid / hid-input.c
1 /*
2 * Copyright (c) 2000-2001 Vojtech Pavlik
3 * Copyright (c) 2006-2010 Jiri Kosina
4 *
5 * HID to Linux Input mapping
6 */
7
8 /*
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 * Should you need to contact me, the author, you can do so either by
24 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
25 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
26 */
27
28 #include <linux/module.h>
29 #include <linux/slab.h>
30 #include <linux/kernel.h>
31
32 #include <linux/hid.h>
33 #include <linux/hid-debug.h>
34
35 #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
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
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
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
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
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
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
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 */
211 __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 switch (code) {
229 case ABS_X:
230 case ABS_Y:
231 case ABS_Z:
232 case ABS_MT_POSITION_X:
233 case ABS_MT_POSITION_Y:
234 case ABS_MT_TOOL_X:
235 case ABS_MT_TOOL_Y:
236 case ABS_MT_TOUCH_MAJOR:
237 case ABS_MT_TOUCH_MINOR:
238 if (field->unit == 0x11) { /* If centimeters */
239 /* Convert to millimeters */
240 unit_exponent += 1;
241 } else if (field->unit == 0x13) { /* If inches */
242 /* Convert to millimeters */
243 prev = physical_extents;
244 physical_extents *= 254;
245 if (physical_extents < prev)
246 return 0;
247 unit_exponent -= 1;
248 } else {
249 return 0;
250 }
251 break;
252
253 case ABS_RX:
254 case ABS_RY:
255 case ABS_RZ:
256 case ABS_TILT_X:
257 case ABS_TILT_Y:
258 if (field->unit == 0x14) { /* If degrees */
259 /* Convert to radians */
260 prev = logical_extents;
261 logical_extents *= 573;
262 if (logical_extents < prev)
263 return 0;
264 unit_exponent += 1;
265 } else if (field->unit != 0x12) { /* If not radians */
266 return 0;
267 }
268 break;
269
270 default:
271 return 0;
272 }
273
274 /* Apply negative unit exponent */
275 for (; unit_exponent < 0; unit_exponent++) {
276 prev = logical_extents;
277 logical_extents *= 10;
278 if (logical_extents < prev)
279 return 0;
280 }
281 /* Apply positive unit exponent */
282 for (; unit_exponent > 0; unit_exponent--) {
283 prev = physical_extents;
284 physical_extents *= 10;
285 if (physical_extents < prev)
286 return 0;
287 }
288
289 /* Calculate resolution */
290 return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
291 }
292 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
293
294 #ifdef CONFIG_HID_BATTERY_STRENGTH
295 static enum power_supply_property hidinput_battery_props[] = {
296 POWER_SUPPLY_PROP_PRESENT,
297 POWER_SUPPLY_PROP_ONLINE,
298 POWER_SUPPLY_PROP_CAPACITY,
299 POWER_SUPPLY_PROP_MODEL_NAME,
300 POWER_SUPPLY_PROP_STATUS,
301 POWER_SUPPLY_PROP_SCOPE,
302 };
303
304 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
305 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
306
307 static const struct hid_device_id hid_battery_quirks[] = {
308 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
309 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
310 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
311 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
312 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
313 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
314 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
315 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
316 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
317 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
318 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO),
319 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
320 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
321 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
322 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
323 {}
324 };
325
326 static unsigned find_battery_quirk(struct hid_device *hdev)
327 {
328 unsigned quirks = 0;
329 const struct hid_device_id *match;
330
331 match = hid_match_id(hdev, hid_battery_quirks);
332 if (match != NULL)
333 quirks = match->driver_data;
334
335 return quirks;
336 }
337
338 static int hidinput_get_battery_property(struct power_supply *psy,
339 enum power_supply_property prop,
340 union power_supply_propval *val)
341 {
342 struct hid_device *dev = container_of(psy, struct hid_device, battery);
343 int ret = 0;
344 __u8 *buf;
345
346 switch (prop) {
347 case POWER_SUPPLY_PROP_PRESENT:
348 case POWER_SUPPLY_PROP_ONLINE:
349 val->intval = 1;
350 break;
351
352 case POWER_SUPPLY_PROP_CAPACITY:
353
354 buf = kmalloc(2 * sizeof(__u8), GFP_KERNEL);
355 if (!buf) {
356 ret = -ENOMEM;
357 break;
358 }
359 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2,
360 dev->battery_report_type,
361 HID_REQ_GET_REPORT);
362
363 if (ret != 2) {
364 ret = -ENODATA;
365 kfree(buf);
366 break;
367 }
368 ret = 0;
369
370 if (dev->battery_min < dev->battery_max &&
371 buf[1] >= dev->battery_min &&
372 buf[1] <= dev->battery_max)
373 val->intval = (100 * (buf[1] - dev->battery_min)) /
374 (dev->battery_max - dev->battery_min);
375 kfree(buf);
376 break;
377
378 case POWER_SUPPLY_PROP_MODEL_NAME:
379 val->strval = dev->name;
380 break;
381
382 case POWER_SUPPLY_PROP_STATUS:
383 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
384 break;
385
386 case POWER_SUPPLY_PROP_SCOPE:
387 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
388 break;
389
390 default:
391 ret = -EINVAL;
392 break;
393 }
394
395 return ret;
396 }
397
398 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
399 {
400 struct power_supply *battery = &dev->battery;
401 int ret;
402 unsigned quirks;
403 s32 min, max;
404
405 if (field->usage->hid != HID_DC_BATTERYSTRENGTH)
406 return false; /* no match */
407
408 if (battery->name != NULL)
409 goto out; /* already initialized? */
410
411 battery->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq);
412 if (battery->name == NULL)
413 goto out;
414
415 battery->type = POWER_SUPPLY_TYPE_BATTERY;
416 battery->properties = hidinput_battery_props;
417 battery->num_properties = ARRAY_SIZE(hidinput_battery_props);
418 battery->use_for_apm = 0;
419 battery->get_property = hidinput_get_battery_property;
420
421 quirks = find_battery_quirk(dev);
422
423 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
424 dev->bus, dev->vendor, dev->product, dev->version, quirks);
425
426 min = field->logical_minimum;
427 max = field->logical_maximum;
428
429 if (quirks & HID_BATTERY_QUIRK_PERCENT) {
430 min = 0;
431 max = 100;
432 }
433
434 if (quirks & HID_BATTERY_QUIRK_FEATURE)
435 report_type = HID_FEATURE_REPORT;
436
437 dev->battery_min = min;
438 dev->battery_max = max;
439 dev->battery_report_type = report_type;
440 dev->battery_report_id = field->report->id;
441
442 ret = power_supply_register(&dev->dev, battery);
443 if (ret != 0) {
444 hid_warn(dev, "can't register power supply: %d\n", ret);
445 kfree(battery->name);
446 battery->name = NULL;
447 }
448
449 power_supply_powers(battery, &dev->dev);
450
451 out:
452 return true;
453 }
454
455 static void hidinput_cleanup_battery(struct hid_device *dev)
456 {
457 if (!dev->battery.name)
458 return;
459
460 power_supply_unregister(&dev->battery);
461 kfree(dev->battery.name);
462 dev->battery.name = NULL;
463 }
464 #else /* !CONFIG_HID_BATTERY_STRENGTH */
465 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
466 struct hid_field *field)
467 {
468 return false;
469 }
470
471 static void hidinput_cleanup_battery(struct hid_device *dev)
472 {
473 }
474 #endif /* CONFIG_HID_BATTERY_STRENGTH */
475
476 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
477 struct hid_usage *usage)
478 {
479 struct input_dev *input = hidinput->input;
480 struct hid_device *device = input_get_drvdata(input);
481 int max = 0, code;
482 unsigned long *bit = NULL;
483
484 field->hidinput = hidinput;
485
486 if (field->flags & HID_MAIN_ITEM_CONSTANT)
487 goto ignore;
488
489 /* Ignore if report count is out of bounds. */
490 if (field->report_count < 1)
491 goto ignore;
492
493 /* only LED usages are supported in output fields */
494 if (field->report_type == HID_OUTPUT_REPORT &&
495 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
496 goto ignore;
497 }
498
499 if (device->driver->input_mapping) {
500 int ret = device->driver->input_mapping(device, hidinput, field,
501 usage, &bit, &max);
502 if (ret > 0)
503 goto mapped;
504 if (ret < 0)
505 goto ignore;
506 }
507
508 switch (usage->hid & HID_USAGE_PAGE) {
509 case HID_UP_UNDEFINED:
510 goto ignore;
511
512 case HID_UP_KEYBOARD:
513 set_bit(EV_REP, input->evbit);
514
515 if ((usage->hid & HID_USAGE) < 256) {
516 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
517 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
518 } else
519 map_key(KEY_UNKNOWN);
520
521 break;
522
523 case HID_UP_BUTTON:
524 code = ((usage->hid - 1) & HID_USAGE);
525
526 switch (field->application) {
527 case HID_GD_MOUSE:
528 case HID_GD_POINTER: code += BTN_MOUSE; break;
529 case HID_GD_JOYSTICK:
530 if (code <= 0xf)
531 code += BTN_JOYSTICK;
532 else
533 code += BTN_TRIGGER_HAPPY - 0x10;
534 break;
535 case HID_GD_GAMEPAD:
536 if (code <= 0xf)
537 code += BTN_GAMEPAD;
538 else
539 code += BTN_TRIGGER_HAPPY - 0x10;
540 break;
541 default:
542 switch (field->physical) {
543 case HID_GD_MOUSE:
544 case HID_GD_POINTER: code += BTN_MOUSE; break;
545 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
546 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
547 default: code += BTN_MISC;
548 }
549 }
550
551 map_key(code);
552 break;
553
554 case HID_UP_SIMULATION:
555 switch (usage->hid & 0xffff) {
556 case 0xba: map_abs(ABS_RUDDER); break;
557 case 0xbb: map_abs(ABS_THROTTLE); break;
558 case 0xc4: map_abs(ABS_GAS); break;
559 case 0xc5: map_abs(ABS_BRAKE); break;
560 case 0xc8: map_abs(ABS_WHEEL); break;
561 default: goto ignore;
562 }
563 break;
564
565 case HID_UP_GENDESK:
566 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
567 switch (usage->hid & 0xf) {
568 case 0x1: map_key_clear(KEY_POWER); break;
569 case 0x2: map_key_clear(KEY_SLEEP); break;
570 case 0x3: map_key_clear(KEY_WAKEUP); break;
571 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
572 case 0x5: map_key_clear(KEY_MENU); break;
573 case 0x6: map_key_clear(KEY_PROG1); break;
574 case 0x7: map_key_clear(KEY_HELP); break;
575 case 0x8: map_key_clear(KEY_EXIT); break;
576 case 0x9: map_key_clear(KEY_SELECT); break;
577 case 0xa: map_key_clear(KEY_RIGHT); break;
578 case 0xb: map_key_clear(KEY_LEFT); break;
579 case 0xc: map_key_clear(KEY_UP); break;
580 case 0xd: map_key_clear(KEY_DOWN); break;
581 case 0xe: map_key_clear(KEY_POWER2); break;
582 case 0xf: map_key_clear(KEY_RESTART); break;
583 default: goto unknown;
584 }
585 break;
586 }
587
588 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
589 switch (usage->hid) {
590 case HID_GD_UP: usage->hat_dir = 1; break;
591 case HID_GD_DOWN: usage->hat_dir = 5; break;
592 case HID_GD_RIGHT: usage->hat_dir = 3; break;
593 case HID_GD_LEFT: usage->hat_dir = 7; break;
594 default: goto unknown;
595 }
596 if (field->dpad) {
597 map_abs(field->dpad);
598 goto ignore;
599 }
600 map_abs(ABS_HAT0X);
601 break;
602 }
603
604 switch (usage->hid) {
605 /* These usage IDs map directly to the usage codes. */
606 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
607 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
608 if (field->flags & HID_MAIN_ITEM_RELATIVE)
609 map_rel(usage->hid & 0xf);
610 else
611 map_abs_clear(usage->hid & 0xf);
612 break;
613
614 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
615 if (field->flags & HID_MAIN_ITEM_RELATIVE)
616 map_rel(usage->hid & 0xf);
617 else
618 map_abs(usage->hid & 0xf);
619 break;
620
621 case HID_GD_HATSWITCH:
622 usage->hat_min = field->logical_minimum;
623 usage->hat_max = field->logical_maximum;
624 map_abs(ABS_HAT0X);
625 break;
626
627 case HID_GD_START: map_key_clear(BTN_START); break;
628 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
629
630 default: goto unknown;
631 }
632
633 break;
634
635 case HID_UP_LED:
636 switch (usage->hid & 0xffff) { /* HID-Value: */
637 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
638 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
639 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
640 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
641 case 0x05: map_led (LED_KANA); break; /* "Kana" */
642 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
643 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
644 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
645 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
646 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
647 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
648
649 default: goto ignore;
650 }
651 break;
652
653 case HID_UP_DIGITIZER:
654 switch (usage->hid & 0xff) {
655 case 0x00: /* Undefined */
656 goto ignore;
657
658 case 0x30: /* TipPressure */
659 if (!test_bit(BTN_TOUCH, input->keybit)) {
660 device->quirks |= HID_QUIRK_NOTOUCH;
661 set_bit(EV_KEY, input->evbit);
662 set_bit(BTN_TOUCH, input->keybit);
663 }
664 map_abs_clear(ABS_PRESSURE);
665 break;
666
667 case 0x32: /* InRange */
668 switch (field->physical & 0xff) {
669 case 0x21: map_key(BTN_TOOL_MOUSE); break;
670 case 0x22: map_key(BTN_TOOL_FINGER); break;
671 default: map_key(BTN_TOOL_PEN); break;
672 }
673 break;
674
675 case 0x3c: /* Invert */
676 map_key_clear(BTN_TOOL_RUBBER);
677 break;
678
679 case 0x3d: /* X Tilt */
680 map_abs_clear(ABS_TILT_X);
681 break;
682
683 case 0x3e: /* Y Tilt */
684 map_abs_clear(ABS_TILT_Y);
685 break;
686
687 case 0x33: /* Touch */
688 case 0x42: /* TipSwitch */
689 case 0x43: /* TipSwitch2 */
690 device->quirks &= ~HID_QUIRK_NOTOUCH;
691 map_key_clear(BTN_TOUCH);
692 break;
693
694 case 0x44: /* BarrelSwitch */
695 map_key_clear(BTN_STYLUS);
696 break;
697
698 case 0x46: /* TabletPick */
699 case 0x5a: /* SecondaryBarrelSwitch */
700 map_key_clear(BTN_STYLUS2);
701 break;
702
703 case 0x5b: /* TransducerSerialNumber */
704 usage->type = EV_MSC;
705 usage->code = MSC_SERIAL;
706 bit = input->mscbit;
707 max = MSC_MAX;
708 break;
709
710 default: goto unknown;
711 }
712 break;
713
714 case HID_UP_TELEPHONY:
715 switch (usage->hid & HID_USAGE) {
716 case 0x2f: map_key_clear(KEY_MICMUTE); break;
717 case 0xb0: map_key_clear(KEY_NUMERIC_0); break;
718 case 0xb1: map_key_clear(KEY_NUMERIC_1); break;
719 case 0xb2: map_key_clear(KEY_NUMERIC_2); break;
720 case 0xb3: map_key_clear(KEY_NUMERIC_3); break;
721 case 0xb4: map_key_clear(KEY_NUMERIC_4); break;
722 case 0xb5: map_key_clear(KEY_NUMERIC_5); break;
723 case 0xb6: map_key_clear(KEY_NUMERIC_6); break;
724 case 0xb7: map_key_clear(KEY_NUMERIC_7); break;
725 case 0xb8: map_key_clear(KEY_NUMERIC_8); break;
726 case 0xb9: map_key_clear(KEY_NUMERIC_9); break;
727 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;
728 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;
729 case 0xbc: map_key_clear(KEY_NUMERIC_A); break;
730 case 0xbd: map_key_clear(KEY_NUMERIC_B); break;
731 case 0xbe: map_key_clear(KEY_NUMERIC_C); break;
732 case 0xbf: map_key_clear(KEY_NUMERIC_D); break;
733 default: goto ignore;
734 }
735 break;
736
737 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
738 switch (usage->hid & HID_USAGE) {
739 case 0x000: goto ignore;
740 case 0x030: map_key_clear(KEY_POWER); break;
741 case 0x031: map_key_clear(KEY_RESTART); break;
742 case 0x032: map_key_clear(KEY_SLEEP); break;
743 case 0x034: map_key_clear(KEY_SLEEP); break;
744 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
745 case 0x036: map_key_clear(BTN_MISC); break;
746
747 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
748 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
749 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
750 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
751 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
752 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
753 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
754 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
755 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
756
757 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
758 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
759 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
760 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
761 case 0x069: map_key_clear(KEY_RED); break;
762 case 0x06a: map_key_clear(KEY_GREEN); break;
763 case 0x06b: map_key_clear(KEY_BLUE); break;
764 case 0x06c: map_key_clear(KEY_YELLOW); break;
765 case 0x06d: map_key_clear(KEY_ZOOM); break;
766
767 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
768 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
769 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
770 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
771 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
772 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
773
774 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
775 case 0x083: map_key_clear(KEY_LAST); break;
776 case 0x084: map_key_clear(KEY_ENTER); break;
777 case 0x088: map_key_clear(KEY_PC); break;
778 case 0x089: map_key_clear(KEY_TV); break;
779 case 0x08a: map_key_clear(KEY_WWW); break;
780 case 0x08b: map_key_clear(KEY_DVD); break;
781 case 0x08c: map_key_clear(KEY_PHONE); break;
782 case 0x08d: map_key_clear(KEY_PROGRAM); break;
783 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
784 case 0x08f: map_key_clear(KEY_GAMES); break;
785 case 0x090: map_key_clear(KEY_MEMO); break;
786 case 0x091: map_key_clear(KEY_CD); break;
787 case 0x092: map_key_clear(KEY_VCR); break;
788 case 0x093: map_key_clear(KEY_TUNER); break;
789 case 0x094: map_key_clear(KEY_EXIT); break;
790 case 0x095: map_key_clear(KEY_HELP); break;
791 case 0x096: map_key_clear(KEY_TAPE); break;
792 case 0x097: map_key_clear(KEY_TV2); break;
793 case 0x098: map_key_clear(KEY_SAT); break;
794 case 0x09a: map_key_clear(KEY_PVR); break;
795
796 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
797 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
798 case 0x0a0: map_key_clear(KEY_VCR2); break;
799
800 case 0x0b0: map_key_clear(KEY_PLAY); break;
801 case 0x0b1: map_key_clear(KEY_PAUSE); break;
802 case 0x0b2: map_key_clear(KEY_RECORD); break;
803 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
804 case 0x0b4: map_key_clear(KEY_REWIND); break;
805 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
806 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
807 case 0x0b7: map_key_clear(KEY_STOPCD); break;
808 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
809 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
810 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
811 case 0x0bf: map_key_clear(KEY_SLOW); break;
812
813 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
814 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
815 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
816 case 0x0e2: map_key_clear(KEY_MUTE); break;
817 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
818 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
819 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
820 case 0x0f5: map_key_clear(KEY_SLOW); break;
821
822 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
823 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
824 case 0x183: map_key_clear(KEY_CONFIG); break;
825 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
826 case 0x185: map_key_clear(KEY_EDITOR); break;
827 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
828 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
829 case 0x188: map_key_clear(KEY_PRESENTATION); break;
830 case 0x189: map_key_clear(KEY_DATABASE); break;
831 case 0x18a: map_key_clear(KEY_MAIL); break;
832 case 0x18b: map_key_clear(KEY_NEWS); break;
833 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
834 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
835 case 0x18e: map_key_clear(KEY_CALENDAR); break;
836 case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
837 case 0x190: map_key_clear(KEY_JOURNAL); break;
838 case 0x191: map_key_clear(KEY_FINANCE); break;
839 case 0x192: map_key_clear(KEY_CALC); break;
840 case 0x193: map_key_clear(KEY_PLAYER); break;
841 case 0x194: map_key_clear(KEY_FILE); break;
842 case 0x196: map_key_clear(KEY_WWW); break;
843 case 0x199: map_key_clear(KEY_CHAT); break;
844 case 0x19c: map_key_clear(KEY_LOGOFF); break;
845 case 0x19e: map_key_clear(KEY_COFFEE); break;
846 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
847 case 0x1a2: map_key_clear(KEY_APPSELECT); break;
848 case 0x1a3: map_key_clear(KEY_NEXT); break;
849 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
850 case 0x1a6: map_key_clear(KEY_HELP); break;
851 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
852 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
853 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
854 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
855 case 0x1b4: map_key_clear(KEY_FILE); break;
856 case 0x1b6: map_key_clear(KEY_IMAGES); break;
857 case 0x1b7: map_key_clear(KEY_AUDIO); break;
858 case 0x1b8: map_key_clear(KEY_VIDEO); break;
859 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
860 case 0x1bd: map_key_clear(KEY_INFO); break;
861 case 0x201: map_key_clear(KEY_NEW); break;
862 case 0x202: map_key_clear(KEY_OPEN); break;
863 case 0x203: map_key_clear(KEY_CLOSE); break;
864 case 0x204: map_key_clear(KEY_EXIT); break;
865 case 0x207: map_key_clear(KEY_SAVE); break;
866 case 0x208: map_key_clear(KEY_PRINT); break;
867 case 0x209: map_key_clear(KEY_PROPS); break;
868 case 0x21a: map_key_clear(KEY_UNDO); break;
869 case 0x21b: map_key_clear(KEY_COPY); break;
870 case 0x21c: map_key_clear(KEY_CUT); break;
871 case 0x21d: map_key_clear(KEY_PASTE); break;
872 case 0x21f: map_key_clear(KEY_FIND); break;
873 case 0x221: map_key_clear(KEY_SEARCH); break;
874 case 0x222: map_key_clear(KEY_GOTO); break;
875 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
876 case 0x224: map_key_clear(KEY_BACK); break;
877 case 0x225: map_key_clear(KEY_FORWARD); break;
878 case 0x226: map_key_clear(KEY_STOP); break;
879 case 0x227: map_key_clear(KEY_REFRESH); break;
880 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
881 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
882 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
883 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
884 case 0x233: map_key_clear(KEY_SCROLLUP); break;
885 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
886 case 0x238: map_rel(REL_HWHEEL); break;
887 case 0x23d: map_key_clear(KEY_EDIT); break;
888 case 0x25f: map_key_clear(KEY_CANCEL); break;
889 case 0x269: map_key_clear(KEY_INSERT); break;
890 case 0x26a: map_key_clear(KEY_DELETE); break;
891 case 0x279: map_key_clear(KEY_REDO); break;
892
893 case 0x289: map_key_clear(KEY_REPLY); break;
894 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
895 case 0x28c: map_key_clear(KEY_SEND); break;
896
897 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
898 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
899 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
900 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
901 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
902 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
903
904 default: map_key_clear(KEY_UNKNOWN);
905 }
906 break;
907
908 case HID_UP_GENDEVCTRLS:
909 if (hidinput_setup_battery(device, HID_INPUT_REPORT, field))
910 goto ignore;
911 else
912 goto unknown;
913 break;
914
915 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
916 set_bit(EV_REP, input->evbit);
917 switch (usage->hid & HID_USAGE) {
918 case 0x021: map_key_clear(KEY_PRINT); break;
919 case 0x070: map_key_clear(KEY_HP); break;
920 case 0x071: map_key_clear(KEY_CAMERA); break;
921 case 0x072: map_key_clear(KEY_SOUND); break;
922 case 0x073: map_key_clear(KEY_QUESTION); break;
923 case 0x080: map_key_clear(KEY_EMAIL); break;
924 case 0x081: map_key_clear(KEY_CHAT); break;
925 case 0x082: map_key_clear(KEY_SEARCH); break;
926 case 0x083: map_key_clear(KEY_CONNECT); break;
927 case 0x084: map_key_clear(KEY_FINANCE); break;
928 case 0x085: map_key_clear(KEY_SPORT); break;
929 case 0x086: map_key_clear(KEY_SHOP); break;
930 default: goto ignore;
931 }
932 break;
933
934 case HID_UP_HPVENDOR2:
935 set_bit(EV_REP, input->evbit);
936 switch (usage->hid & HID_USAGE) {
937 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
938 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
939 default: goto ignore;
940 }
941 break;
942
943 case HID_UP_MSVENDOR:
944 goto ignore;
945
946 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
947 set_bit(EV_REP, input->evbit);
948 goto ignore;
949
950 case HID_UP_LOGIVENDOR:
951 goto ignore;
952
953 case HID_UP_PID:
954 switch (usage->hid & HID_USAGE) {
955 case 0xa4: map_key_clear(BTN_DEAD); break;
956 default: goto ignore;
957 }
958 break;
959
960 default:
961 unknown:
962 if (field->report_size == 1) {
963 if (field->report->type == HID_OUTPUT_REPORT) {
964 map_led(LED_MISC);
965 break;
966 }
967 map_key(BTN_MISC);
968 break;
969 }
970 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
971 map_rel(REL_MISC);
972 break;
973 }
974 map_abs(ABS_MISC);
975 break;
976 }
977
978 mapped:
979 if (device->driver->input_mapped && device->driver->input_mapped(device,
980 hidinput, field, usage, &bit, &max) < 0)
981 goto ignore;
982
983 set_bit(usage->type, input->evbit);
984
985 while (usage->code <= max && test_and_set_bit(usage->code, bit))
986 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
987
988 if (usage->code > max)
989 goto ignore;
990
991
992 if (usage->type == EV_ABS) {
993
994 int a = field->logical_minimum;
995 int b = field->logical_maximum;
996
997 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
998 a = field->logical_minimum = 0;
999 b = field->logical_maximum = 255;
1000 }
1001
1002 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1003 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
1004 else input_set_abs_params(input, usage->code, a, b, 0, 0);
1005
1006 input_abs_set_res(input, usage->code,
1007 hidinput_calc_abs_res(field, usage->code));
1008
1009 /* use a larger default input buffer for MT devices */
1010 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1011 input_set_events_per_packet(input, 60);
1012 }
1013
1014 if (usage->type == EV_ABS &&
1015 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
1016 int i;
1017 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1018 input_set_abs_params(input, i, -1, 1, 0, 0);
1019 set_bit(i, input->absbit);
1020 }
1021 if (usage->hat_dir && !field->dpad)
1022 field->dpad = usage->code;
1023 }
1024
1025 /* for those devices which produce Consumer volume usage as relative,
1026 * we emulate pressing volumeup/volumedown appropriate number of times
1027 * in hidinput_hid_event()
1028 */
1029 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1030 (usage->code == ABS_VOLUME)) {
1031 set_bit(KEY_VOLUMEUP, input->keybit);
1032 set_bit(KEY_VOLUMEDOWN, input->keybit);
1033 }
1034
1035 if (usage->type == EV_KEY) {
1036 set_bit(EV_MSC, input->evbit);
1037 set_bit(MSC_SCAN, input->mscbit);
1038 }
1039
1040 ignore:
1041 return;
1042
1043 }
1044
1045 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1046 {
1047 struct input_dev *input;
1048 unsigned *quirks = &hid->quirks;
1049
1050 if (!field->hidinput)
1051 return;
1052
1053 input = field->hidinput->input;
1054
1055 if (!usage->type)
1056 return;
1057
1058 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1059 int hat_dir = usage->hat_dir;
1060 if (!hat_dir)
1061 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1062 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1063 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
1064 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1065 return;
1066 }
1067
1068 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
1069 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
1070 return;
1071 }
1072
1073 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
1074 if (value) {
1075 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
1076 return;
1077 }
1078 input_event(input, usage->type, usage->code, 0);
1079 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
1080 return;
1081 }
1082
1083 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
1084 int a = field->logical_minimum;
1085 int b = field->logical_maximum;
1086 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
1087 }
1088
1089 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
1090 dbg_hid("Maximum Effects - %d\n",value);
1091 return;
1092 }
1093
1094 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
1095 dbg_hid("PID Pool Report\n");
1096 return;
1097 }
1098
1099 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1100 return;
1101
1102 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1103 (usage->code == ABS_VOLUME)) {
1104 int count = abs(value);
1105 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1106 int i;
1107
1108 for (i = 0; i < count; i++) {
1109 input_event(input, EV_KEY, direction, 1);
1110 input_sync(input);
1111 input_event(input, EV_KEY, direction, 0);
1112 input_sync(input);
1113 }
1114 return;
1115 }
1116
1117 /*
1118 * Ignore out-of-range values as per HID specification,
1119 * section 5.10 and 6.2.25.
1120 *
1121 * The logical_minimum < logical_maximum check is done so that we
1122 * don't unintentionally discard values sent by devices which
1123 * don't specify logical min and max.
1124 */
1125 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1126 (field->logical_minimum < field->logical_maximum) &&
1127 (value < field->logical_minimum ||
1128 value > field->logical_maximum)) {
1129 dbg_hid("Ignoring out-of-range value %x\n", value);
1130 return;
1131 }
1132
1133 /*
1134 * Ignore reports for absolute data if the data didn't change. This is
1135 * not only an optimization but also fixes 'dead' key reports. Some
1136 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1137 * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1138 * can only have one of them physically available. The 'dead' keys
1139 * report constant 0. As all map to the same keycode, they'd confuse
1140 * the input layer. If we filter the 'dead' keys on the HID level, we
1141 * skip the keycode translation and only forward real events.
1142 */
1143 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1144 HID_MAIN_ITEM_BUFFERED_BYTE)) &&
1145 (field->flags & HID_MAIN_ITEM_VARIABLE) &&
1146 usage->usage_index < field->maxusage &&
1147 value == field->value[usage->usage_index])
1148 return;
1149
1150 /* report the usage code as scancode if the key status has changed */
1151 if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
1152 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1153
1154 input_event(input, usage->type, usage->code, value);
1155
1156 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
1157 input_event(input, usage->type, usage->code, 0);
1158 }
1159
1160 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1161 {
1162 struct hid_input *hidinput;
1163
1164 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1165 return;
1166
1167 list_for_each_entry(hidinput, &hid->inputs, list)
1168 input_sync(hidinput->input);
1169 }
1170 EXPORT_SYMBOL_GPL(hidinput_report_event);
1171
1172 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1173 {
1174 struct hid_report *report;
1175 int i, j;
1176
1177 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1178 for (i = 0; i < report->maxfield; i++) {
1179 *field = report->field[i];
1180 for (j = 0; j < (*field)->maxusage; j++)
1181 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1182 return j;
1183 }
1184 }
1185 return -1;
1186 }
1187 EXPORT_SYMBOL_GPL(hidinput_find_field);
1188
1189 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1190 {
1191 struct hid_report *report;
1192 struct hid_field *field;
1193 int i, j;
1194
1195 list_for_each_entry(report,
1196 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1197 list) {
1198 for (i = 0; i < report->maxfield; i++) {
1199 field = report->field[i];
1200 for (j = 0; j < field->maxusage; j++)
1201 if (field->usage[j].type == EV_LED)
1202 return field;
1203 }
1204 }
1205 return NULL;
1206 }
1207 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1208
1209 unsigned int hidinput_count_leds(struct hid_device *hid)
1210 {
1211 struct hid_report *report;
1212 struct hid_field *field;
1213 int i, j;
1214 unsigned int count = 0;
1215
1216 list_for_each_entry(report,
1217 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1218 list) {
1219 for (i = 0; i < report->maxfield; i++) {
1220 field = report->field[i];
1221 for (j = 0; j < field->maxusage; j++)
1222 if (field->usage[j].type == EV_LED &&
1223 field->value[j])
1224 count += 1;
1225 }
1226 }
1227 return count;
1228 }
1229 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1230
1231 static void hidinput_led_worker(struct work_struct *work)
1232 {
1233 struct hid_device *hid = container_of(work, struct hid_device,
1234 led_work);
1235 struct hid_field *field;
1236 struct hid_report *report;
1237 int len, ret;
1238 __u8 *buf;
1239
1240 field = hidinput_get_led_field(hid);
1241 if (!field)
1242 return;
1243
1244 /*
1245 * field->report is accessed unlocked regarding HID core. So there might
1246 * be another incoming SET-LED request from user-space, which changes
1247 * the LED state while we assemble our outgoing buffer. However, this
1248 * doesn't matter as hid_output_report() correctly converts it into a
1249 * boolean value no matter what information is currently set on the LED
1250 * field (even garbage). So the remote device will always get a valid
1251 * request.
1252 * And in case we send a wrong value, a next led worker is spawned
1253 * for every SET-LED request so the following worker will send the
1254 * correct value, guaranteed!
1255 */
1256
1257 report = field->report;
1258
1259 /* use custom SET_REPORT request if possible (asynchronous) */
1260 if (hid->ll_driver->request)
1261 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1262
1263 /* fall back to generic raw-output-report */
1264 len = hid_report_len(report);
1265 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1266 if (!buf)
1267 return;
1268
1269 hid_output_report(report, buf);
1270 /* synchronous output report */
1271 ret = hid_hw_output_report(hid, buf, len);
1272 if (ret == -ENOSYS)
1273 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1274 HID_REQ_SET_REPORT);
1275 kfree(buf);
1276 }
1277
1278 static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1279 unsigned int code, int value)
1280 {
1281 struct hid_device *hid = input_get_drvdata(dev);
1282 struct hid_field *field;
1283 int offset;
1284
1285 if (type == EV_FF)
1286 return input_ff_event(dev, type, code, value);
1287
1288 if (type != EV_LED)
1289 return -1;
1290
1291 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1292 hid_warn(dev, "event field not found\n");
1293 return -1;
1294 }
1295
1296 hid_set_field(field, offset, value);
1297
1298 schedule_work(&hid->led_work);
1299 return 0;
1300 }
1301
1302 static int hidinput_open(struct input_dev *dev)
1303 {
1304 struct hid_device *hid = input_get_drvdata(dev);
1305
1306 return hid_hw_open(hid);
1307 }
1308
1309 static void hidinput_close(struct input_dev *dev)
1310 {
1311 struct hid_device *hid = input_get_drvdata(dev);
1312
1313 hid_hw_close(hid);
1314 }
1315
1316 static void report_features(struct hid_device *hid)
1317 {
1318 struct hid_driver *drv = hid->driver;
1319 struct hid_report_enum *rep_enum;
1320 struct hid_report *rep;
1321 int i, j;
1322
1323 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1324 list_for_each_entry(rep, &rep_enum->report_list, list)
1325 for (i = 0; i < rep->maxfield; i++) {
1326 /* Ignore if report count is out of bounds. */
1327 if (rep->field[i]->report_count < 1)
1328 continue;
1329
1330 for (j = 0; j < rep->field[i]->maxusage; j++) {
1331 /* Verify if Battery Strength feature is available */
1332 hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);
1333
1334 if (drv->feature_mapping)
1335 drv->feature_mapping(hid, rep->field[i],
1336 rep->field[i]->usage + j);
1337 }
1338 }
1339 }
1340
1341 static struct hid_input *hidinput_allocate(struct hid_device *hid)
1342 {
1343 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1344 struct input_dev *input_dev = input_allocate_device();
1345 if (!hidinput || !input_dev) {
1346 kfree(hidinput);
1347 input_free_device(input_dev);
1348 hid_err(hid, "Out of memory during hid input probe\n");
1349 return NULL;
1350 }
1351
1352 input_set_drvdata(input_dev, hid);
1353 input_dev->event = hidinput_input_event;
1354 input_dev->open = hidinput_open;
1355 input_dev->close = hidinput_close;
1356 input_dev->setkeycode = hidinput_setkeycode;
1357 input_dev->getkeycode = hidinput_getkeycode;
1358
1359 input_dev->name = hid->name;
1360 input_dev->phys = hid->phys;
1361 input_dev->uniq = hid->uniq;
1362 input_dev->id.bustype = hid->bus;
1363 input_dev->id.vendor = hid->vendor;
1364 input_dev->id.product = hid->product;
1365 input_dev->id.version = hid->version;
1366 input_dev->dev.parent = &hid->dev;
1367 hidinput->input = input_dev;
1368 list_add_tail(&hidinput->list, &hid->inputs);
1369
1370 return hidinput;
1371 }
1372
1373 static bool hidinput_has_been_populated(struct hid_input *hidinput)
1374 {
1375 int i;
1376 unsigned long r = 0;
1377
1378 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
1379 r |= hidinput->input->evbit[i];
1380
1381 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
1382 r |= hidinput->input->keybit[i];
1383
1384 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
1385 r |= hidinput->input->relbit[i];
1386
1387 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
1388 r |= hidinput->input->absbit[i];
1389
1390 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
1391 r |= hidinput->input->mscbit[i];
1392
1393 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
1394 r |= hidinput->input->ledbit[i];
1395
1396 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
1397 r |= hidinput->input->sndbit[i];
1398
1399 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
1400 r |= hidinput->input->ffbit[i];
1401
1402 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
1403 r |= hidinput->input->swbit[i];
1404
1405 return !!r;
1406 }
1407
1408 static void hidinput_cleanup_hidinput(struct hid_device *hid,
1409 struct hid_input *hidinput)
1410 {
1411 struct hid_report *report;
1412 int i, k;
1413
1414 list_del(&hidinput->list);
1415 input_free_device(hidinput->input);
1416
1417 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1418 if (k == HID_OUTPUT_REPORT &&
1419 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1420 continue;
1421
1422 list_for_each_entry(report, &hid->report_enum[k].report_list,
1423 list) {
1424
1425 for (i = 0; i < report->maxfield; i++)
1426 if (report->field[i]->hidinput == hidinput)
1427 report->field[i]->hidinput = NULL;
1428 }
1429 }
1430
1431 kfree(hidinput);
1432 }
1433
1434 /*
1435 * Register the input device; print a message.
1436 * Configure the input layer interface
1437 * Read all reports and initialize the absolute field values.
1438 */
1439
1440 int hidinput_connect(struct hid_device *hid, unsigned int force)
1441 {
1442 struct hid_driver *drv = hid->driver;
1443 struct hid_report *report;
1444 struct hid_input *hidinput = NULL;
1445 int i, j, k;
1446
1447 INIT_LIST_HEAD(&hid->inputs);
1448 INIT_WORK(&hid->led_work, hidinput_led_worker);
1449
1450 if (!force) {
1451 for (i = 0; i < hid->maxcollection; i++) {
1452 struct hid_collection *col = &hid->collection[i];
1453 if (col->type == HID_COLLECTION_APPLICATION ||
1454 col->type == HID_COLLECTION_PHYSICAL)
1455 if (IS_INPUT_APPLICATION(col->usage))
1456 break;
1457 }
1458
1459 if (i == hid->maxcollection)
1460 return -1;
1461 }
1462
1463 report_features(hid);
1464
1465 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1466 if (k == HID_OUTPUT_REPORT &&
1467 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1468 continue;
1469
1470 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1471
1472 if (!report->maxfield)
1473 continue;
1474
1475 if (!hidinput) {
1476 hidinput = hidinput_allocate(hid);
1477 if (!hidinput)
1478 goto out_unwind;
1479 }
1480
1481 for (i = 0; i < report->maxfield; i++)
1482 for (j = 0; j < report->field[i]->maxusage; j++)
1483 hidinput_configure_usage(hidinput, report->field[i],
1484 report->field[i]->usage + j);
1485
1486 if ((hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1487 !hidinput_has_been_populated(hidinput))
1488 continue;
1489
1490 if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
1491 /* This will leave hidinput NULL, so that it
1492 * allocates another one if we have more inputs on
1493 * the same interface. Some devices (e.g. Happ's
1494 * UGCI) cram a lot of unrelated inputs into the
1495 * same interface. */
1496 hidinput->report = report;
1497 if (drv->input_configured)
1498 drv->input_configured(hid, hidinput);
1499 if (input_register_device(hidinput->input))
1500 goto out_cleanup;
1501 hidinput = NULL;
1502 }
1503 }
1504 }
1505
1506 if (hidinput && (hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1507 !hidinput_has_been_populated(hidinput)) {
1508 /* no need to register an input device not populated */
1509 hidinput_cleanup_hidinput(hid, hidinput);
1510 hidinput = NULL;
1511 }
1512
1513 if (list_empty(&hid->inputs)) {
1514 hid_err(hid, "No inputs registered, leaving\n");
1515 goto out_unwind;
1516 }
1517
1518 if (hidinput) {
1519 if (drv->input_configured)
1520 drv->input_configured(hid, hidinput);
1521 if (input_register_device(hidinput->input))
1522 goto out_cleanup;
1523 }
1524
1525 return 0;
1526
1527 out_cleanup:
1528 list_del(&hidinput->list);
1529 input_free_device(hidinput->input);
1530 kfree(hidinput);
1531 out_unwind:
1532 /* unwind the ones we already registered */
1533 hidinput_disconnect(hid);
1534
1535 return -1;
1536 }
1537 EXPORT_SYMBOL_GPL(hidinput_connect);
1538
1539 void hidinput_disconnect(struct hid_device *hid)
1540 {
1541 struct hid_input *hidinput, *next;
1542
1543 hidinput_cleanup_battery(hid);
1544
1545 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1546 list_del(&hidinput->list);
1547 input_unregister_device(hidinput->input);
1548 kfree(hidinput);
1549 }
1550
1551 /* led_work is spawned by input_dev callbacks, but doesn't access the
1552 * parent input_dev at all. Once all input devices are removed, we
1553 * know that led_work will never get restarted, so we can cancel it
1554 * synchronously and are safe. */
1555 cancel_work_sync(&hid->led_work);
1556 }
1557 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1558
Linux kernel - Deliverables
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