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UBUNTU: Ubuntu-4.13.0-45.50
[mirror_ubuntu-artful-kernel.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_WHEEL:
257 case ABS_TILT_X:
258 case ABS_TILT_Y:
259 if (field->unit == 0x14) { /* If degrees */
260 /* Convert to radians */
261 prev = logical_extents;
262 logical_extents *= 573;
263 if (logical_extents < prev)
264 return 0;
265 unit_exponent += 1;
266 } else if (field->unit != 0x12) { /* If not radians */
267 return 0;
268 }
269 break;
270
271 default:
272 return 0;
273 }
274
275 /* Apply negative unit exponent */
276 for (; unit_exponent < 0; unit_exponent++) {
277 prev = logical_extents;
278 logical_extents *= 10;
279 if (logical_extents < prev)
280 return 0;
281 }
282 /* Apply positive unit exponent */
283 for (; unit_exponent > 0; unit_exponent--) {
284 prev = physical_extents;
285 physical_extents *= 10;
286 if (physical_extents < prev)
287 return 0;
288 }
289
290 /* Calculate resolution */
291 return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
292 }
293 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
294
295 #ifdef CONFIG_HID_BATTERY_STRENGTH
296 static enum power_supply_property hidinput_battery_props[] = {
297 POWER_SUPPLY_PROP_PRESENT,
298 POWER_SUPPLY_PROP_ONLINE,
299 POWER_SUPPLY_PROP_CAPACITY,
300 POWER_SUPPLY_PROP_MODEL_NAME,
301 POWER_SUPPLY_PROP_STATUS,
302 POWER_SUPPLY_PROP_SCOPE,
303 };
304
305 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
306 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
307 #define HID_BATTERY_QUIRK_IGNORE (1 << 2) /* completely ignore the battery */
308
309 static const struct hid_device_id hid_battery_quirks[] = {
310 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
311 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
312 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
313 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
314 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
315 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
316 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
317 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
318 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
319 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
320 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO),
321 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
322 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
323 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
324 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
325 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM,
326 USB_DEVICE_ID_ELECOM_BM084),
327 HID_BATTERY_QUIRK_IGNORE },
328 {}
329 };
330
331 static unsigned find_battery_quirk(struct hid_device *hdev)
332 {
333 unsigned quirks = 0;
334 const struct hid_device_id *match;
335
336 match = hid_match_id(hdev, hid_battery_quirks);
337 if (match != NULL)
338 quirks = match->driver_data;
339
340 return quirks;
341 }
342
343 static int hidinput_get_battery_property(struct power_supply *psy,
344 enum power_supply_property prop,
345 union power_supply_propval *val)
346 {
347 struct hid_device *dev = power_supply_get_drvdata(psy);
348 int ret = 0;
349 __u8 *buf;
350
351 switch (prop) {
352 case POWER_SUPPLY_PROP_PRESENT:
353 case POWER_SUPPLY_PROP_ONLINE:
354 val->intval = 1;
355 break;
356
357 case POWER_SUPPLY_PROP_CAPACITY:
358
359 buf = kmalloc(2 * sizeof(__u8), GFP_KERNEL);
360 if (!buf) {
361 ret = -ENOMEM;
362 break;
363 }
364 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2,
365 dev->battery_report_type,
366 HID_REQ_GET_REPORT);
367
368 if (ret != 2) {
369 ret = -ENODATA;
370 kfree(buf);
371 break;
372 }
373 ret = 0;
374
375 if (dev->battery_min < dev->battery_max &&
376 buf[1] >= dev->battery_min &&
377 buf[1] <= dev->battery_max)
378 val->intval = (100 * (buf[1] - dev->battery_min)) /
379 (dev->battery_max - dev->battery_min);
380 kfree(buf);
381 break;
382
383 case POWER_SUPPLY_PROP_MODEL_NAME:
384 val->strval = dev->name;
385 break;
386
387 case POWER_SUPPLY_PROP_STATUS:
388 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
389 break;
390
391 case POWER_SUPPLY_PROP_SCOPE:
392 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
393 break;
394
395 default:
396 ret = -EINVAL;
397 break;
398 }
399
400 return ret;
401 }
402
403 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
404 {
405 struct power_supply_desc *psy_desc = NULL;
406 struct power_supply_config psy_cfg = { .drv_data = dev, };
407 unsigned quirks;
408 s32 min, max;
409
410 if (field->usage->hid != HID_DC_BATTERYSTRENGTH)
411 return false; /* no match */
412
413 if (dev->battery != NULL)
414 goto out; /* already initialized? */
415
416 quirks = find_battery_quirk(dev);
417
418 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
419 dev->bus, dev->vendor, dev->product, dev->version, quirks);
420
421 if (quirks & HID_BATTERY_QUIRK_IGNORE)
422 goto out;
423
424 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
425 if (psy_desc == NULL)
426 goto out;
427
428 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq);
429 if (psy_desc->name == NULL) {
430 kfree(psy_desc);
431 goto out;
432 }
433
434 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
435 psy_desc->properties = hidinput_battery_props;
436 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
437 psy_desc->use_for_apm = 0;
438 psy_desc->get_property = hidinput_get_battery_property;
439
440 min = field->logical_minimum;
441 max = field->logical_maximum;
442
443 if (quirks & HID_BATTERY_QUIRK_PERCENT) {
444 min = 0;
445 max = 100;
446 }
447
448 if (quirks & HID_BATTERY_QUIRK_FEATURE)
449 report_type = HID_FEATURE_REPORT;
450
451 dev->battery_min = min;
452 dev->battery_max = max;
453 dev->battery_report_type = report_type;
454 dev->battery_report_id = field->report->id;
455
456 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
457 if (IS_ERR(dev->battery)) {
458 hid_warn(dev, "can't register power supply: %ld\n",
459 PTR_ERR(dev->battery));
460 kfree(psy_desc->name);
461 kfree(psy_desc);
462 dev->battery = NULL;
463 } else {
464 power_supply_powers(dev->battery, &dev->dev);
465 }
466
467 out:
468 return true;
469 }
470
471 static void hidinput_cleanup_battery(struct hid_device *dev)
472 {
473 const struct power_supply_desc *psy_desc;
474
475 if (!dev->battery)
476 return;
477
478 psy_desc = dev->battery->desc;
479 power_supply_unregister(dev->battery);
480 kfree(psy_desc->name);
481 kfree(psy_desc);
482 dev->battery = NULL;
483 }
484 #else /* !CONFIG_HID_BATTERY_STRENGTH */
485 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
486 struct hid_field *field)
487 {
488 return false;
489 }
490
491 static void hidinput_cleanup_battery(struct hid_device *dev)
492 {
493 }
494 #endif /* CONFIG_HID_BATTERY_STRENGTH */
495
496 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
497 struct hid_usage *usage)
498 {
499 struct input_dev *input = hidinput->input;
500 struct hid_device *device = input_get_drvdata(input);
501 int max = 0, code;
502 unsigned long *bit = NULL;
503
504 field->hidinput = hidinput;
505
506 if (field->flags & HID_MAIN_ITEM_CONSTANT)
507 goto ignore;
508
509 /* Ignore if report count is out of bounds. */
510 if (field->report_count < 1)
511 goto ignore;
512
513 /* only LED usages are supported in output fields */
514 if (field->report_type == HID_OUTPUT_REPORT &&
515 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
516 goto ignore;
517 }
518
519 if (device->driver->input_mapping) {
520 int ret = device->driver->input_mapping(device, hidinput, field,
521 usage, &bit, &max);
522 if (ret > 0)
523 goto mapped;
524 if (ret < 0)
525 goto ignore;
526 }
527
528 switch (usage->hid & HID_USAGE_PAGE) {
529 case HID_UP_UNDEFINED:
530 goto ignore;
531
532 case HID_UP_KEYBOARD:
533 set_bit(EV_REP, input->evbit);
534
535 if ((usage->hid & HID_USAGE) < 256) {
536 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
537 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
538 } else
539 map_key(KEY_UNKNOWN);
540
541 break;
542
543 case HID_UP_BUTTON:
544 code = ((usage->hid - 1) & HID_USAGE);
545
546 switch (field->application) {
547 case HID_GD_MOUSE:
548 case HID_GD_POINTER: code += BTN_MOUSE; break;
549 case HID_GD_JOYSTICK:
550 if (code <= 0xf)
551 code += BTN_JOYSTICK;
552 else
553 code += BTN_TRIGGER_HAPPY - 0x10;
554 break;
555 case HID_GD_GAMEPAD:
556 if (code <= 0xf)
557 code += BTN_GAMEPAD;
558 else
559 code += BTN_TRIGGER_HAPPY - 0x10;
560 break;
561 default:
562 switch (field->physical) {
563 case HID_GD_MOUSE:
564 case HID_GD_POINTER: code += BTN_MOUSE; break;
565 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
566 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
567 default: code += BTN_MISC;
568 }
569 }
570
571 map_key(code);
572 break;
573
574 case HID_UP_SIMULATION:
575 switch (usage->hid & 0xffff) {
576 case 0xba: map_abs(ABS_RUDDER); break;
577 case 0xbb: map_abs(ABS_THROTTLE); break;
578 case 0xc4: map_abs(ABS_GAS); break;
579 case 0xc5: map_abs(ABS_BRAKE); break;
580 case 0xc8: map_abs(ABS_WHEEL); break;
581 default: goto ignore;
582 }
583 break;
584
585 case HID_UP_GENDESK:
586 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
587 switch (usage->hid & 0xf) {
588 case 0x1: map_key_clear(KEY_POWER); break;
589 case 0x2: map_key_clear(KEY_SLEEP); break;
590 case 0x3: map_key_clear(KEY_WAKEUP); break;
591 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
592 case 0x5: map_key_clear(KEY_MENU); break;
593 case 0x6: map_key_clear(KEY_PROG1); break;
594 case 0x7: map_key_clear(KEY_HELP); break;
595 case 0x8: map_key_clear(KEY_EXIT); break;
596 case 0x9: map_key_clear(KEY_SELECT); break;
597 case 0xa: map_key_clear(KEY_RIGHT); break;
598 case 0xb: map_key_clear(KEY_LEFT); break;
599 case 0xc: map_key_clear(KEY_UP); break;
600 case 0xd: map_key_clear(KEY_DOWN); break;
601 case 0xe: map_key_clear(KEY_POWER2); break;
602 case 0xf: map_key_clear(KEY_RESTART); break;
603 default: goto unknown;
604 }
605 break;
606 }
607
608 /*
609 * Some lazy vendors declare 255 usages for System Control,
610 * leading to the creation of ABS_X|Y axis and too many others.
611 * It wouldn't be a problem if joydev doesn't consider the
612 * device as a joystick then.
613 */
614 if (field->application == HID_GD_SYSTEM_CONTROL)
615 goto ignore;
616
617 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
618 switch (usage->hid) {
619 case HID_GD_UP: usage->hat_dir = 1; break;
620 case HID_GD_DOWN: usage->hat_dir = 5; break;
621 case HID_GD_RIGHT: usage->hat_dir = 3; break;
622 case HID_GD_LEFT: usage->hat_dir = 7; break;
623 default: goto unknown;
624 }
625 if (field->dpad) {
626 map_abs(field->dpad);
627 goto ignore;
628 }
629 map_abs(ABS_HAT0X);
630 break;
631 }
632
633 switch (usage->hid) {
634 /* These usage IDs map directly to the usage codes. */
635 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
636 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
637 if (field->flags & HID_MAIN_ITEM_RELATIVE)
638 map_rel(usage->hid & 0xf);
639 else
640 map_abs_clear(usage->hid & 0xf);
641 break;
642
643 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
644 if (field->flags & HID_MAIN_ITEM_RELATIVE)
645 map_rel(usage->hid & 0xf);
646 else
647 map_abs(usage->hid & 0xf);
648 break;
649
650 case HID_GD_HATSWITCH:
651 usage->hat_min = field->logical_minimum;
652 usage->hat_max = field->logical_maximum;
653 map_abs(ABS_HAT0X);
654 break;
655
656 case HID_GD_START: map_key_clear(BTN_START); break;
657 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
658
659 case HID_GD_RFKILL_BTN:
660 /* MS wireless radio ctl extension, also check CA */
661 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
662 map_key_clear(KEY_RFKILL);
663 /* We need to simulate the btn release */
664 field->flags |= HID_MAIN_ITEM_RELATIVE;
665 break;
666 }
667
668 default: goto unknown;
669 }
670
671 break;
672
673 case HID_UP_LED:
674 switch (usage->hid & 0xffff) { /* HID-Value: */
675 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
676 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
677 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
678 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
679 case 0x05: map_led (LED_KANA); break; /* "Kana" */
680 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
681 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
682 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
683 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
684 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
685 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
686
687 default: goto ignore;
688 }
689 break;
690
691 case HID_UP_DIGITIZER:
692 switch (usage->hid & 0xff) {
693 case 0x00: /* Undefined */
694 goto ignore;
695
696 case 0x30: /* TipPressure */
697 if (!test_bit(BTN_TOUCH, input->keybit)) {
698 device->quirks |= HID_QUIRK_NOTOUCH;
699 set_bit(EV_KEY, input->evbit);
700 set_bit(BTN_TOUCH, input->keybit);
701 }
702 map_abs_clear(ABS_PRESSURE);
703 break;
704
705 case 0x32: /* InRange */
706 switch (field->physical & 0xff) {
707 case 0x21: map_key(BTN_TOOL_MOUSE); break;
708 case 0x22: map_key(BTN_TOOL_FINGER); break;
709 default: map_key(BTN_TOOL_PEN); break;
710 }
711 break;
712
713 case 0x3c: /* Invert */
714 map_key_clear(BTN_TOOL_RUBBER);
715 break;
716
717 case 0x3d: /* X Tilt */
718 map_abs_clear(ABS_TILT_X);
719 break;
720
721 case 0x3e: /* Y Tilt */
722 map_abs_clear(ABS_TILT_Y);
723 break;
724
725 case 0x33: /* Touch */
726 case 0x42: /* TipSwitch */
727 case 0x43: /* TipSwitch2 */
728 device->quirks &= ~HID_QUIRK_NOTOUCH;
729 map_key_clear(BTN_TOUCH);
730 break;
731
732 case 0x44: /* BarrelSwitch */
733 map_key_clear(BTN_STYLUS);
734 break;
735
736 case 0x46: /* TabletPick */
737 case 0x5a: /* SecondaryBarrelSwitch */
738 map_key_clear(BTN_STYLUS2);
739 break;
740
741 case 0x5b: /* TransducerSerialNumber */
742 usage->type = EV_MSC;
743 usage->code = MSC_SERIAL;
744 bit = input->mscbit;
745 max = MSC_MAX;
746 break;
747
748 default: goto unknown;
749 }
750 break;
751
752 case HID_UP_TELEPHONY:
753 switch (usage->hid & HID_USAGE) {
754 case 0x2f: map_key_clear(KEY_MICMUTE); break;
755 case 0xb0: map_key_clear(KEY_NUMERIC_0); break;
756 case 0xb1: map_key_clear(KEY_NUMERIC_1); break;
757 case 0xb2: map_key_clear(KEY_NUMERIC_2); break;
758 case 0xb3: map_key_clear(KEY_NUMERIC_3); break;
759 case 0xb4: map_key_clear(KEY_NUMERIC_4); break;
760 case 0xb5: map_key_clear(KEY_NUMERIC_5); break;
761 case 0xb6: map_key_clear(KEY_NUMERIC_6); break;
762 case 0xb7: map_key_clear(KEY_NUMERIC_7); break;
763 case 0xb8: map_key_clear(KEY_NUMERIC_8); break;
764 case 0xb9: map_key_clear(KEY_NUMERIC_9); break;
765 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;
766 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;
767 case 0xbc: map_key_clear(KEY_NUMERIC_A); break;
768 case 0xbd: map_key_clear(KEY_NUMERIC_B); break;
769 case 0xbe: map_key_clear(KEY_NUMERIC_C); break;
770 case 0xbf: map_key_clear(KEY_NUMERIC_D); break;
771 default: goto ignore;
772 }
773 break;
774
775 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
776 switch (usage->hid & HID_USAGE) {
777 case 0x000: goto ignore;
778 case 0x030: map_key_clear(KEY_POWER); break;
779 case 0x031: map_key_clear(KEY_RESTART); break;
780 case 0x032: map_key_clear(KEY_SLEEP); break;
781 case 0x034: map_key_clear(KEY_SLEEP); break;
782 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
783 case 0x036: map_key_clear(BTN_MISC); break;
784
785 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
786 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
787 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
788 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
789 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
790 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
791 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
792 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
793 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
794
795 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
796 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
797 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
798 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
799 case 0x069: map_key_clear(KEY_RED); break;
800 case 0x06a: map_key_clear(KEY_GREEN); break;
801 case 0x06b: map_key_clear(KEY_BLUE); break;
802 case 0x06c: map_key_clear(KEY_YELLOW); break;
803 case 0x06d: map_key_clear(KEY_ZOOM); break;
804
805 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
806 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
807 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
808 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
809 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
810 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
811
812 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
813 case 0x083: map_key_clear(KEY_LAST); break;
814 case 0x084: map_key_clear(KEY_ENTER); break;
815 case 0x088: map_key_clear(KEY_PC); break;
816 case 0x089: map_key_clear(KEY_TV); break;
817 case 0x08a: map_key_clear(KEY_WWW); break;
818 case 0x08b: map_key_clear(KEY_DVD); break;
819 case 0x08c: map_key_clear(KEY_PHONE); break;
820 case 0x08d: map_key_clear(KEY_PROGRAM); break;
821 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
822 case 0x08f: map_key_clear(KEY_GAMES); break;
823 case 0x090: map_key_clear(KEY_MEMO); break;
824 case 0x091: map_key_clear(KEY_CD); break;
825 case 0x092: map_key_clear(KEY_VCR); break;
826 case 0x093: map_key_clear(KEY_TUNER); break;
827 case 0x094: map_key_clear(KEY_EXIT); break;
828 case 0x095: map_key_clear(KEY_HELP); break;
829 case 0x096: map_key_clear(KEY_TAPE); break;
830 case 0x097: map_key_clear(KEY_TV2); break;
831 case 0x098: map_key_clear(KEY_SAT); break;
832 case 0x09a: map_key_clear(KEY_PVR); break;
833
834 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
835 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
836 case 0x0a0: map_key_clear(KEY_VCR2); break;
837
838 case 0x0b0: map_key_clear(KEY_PLAY); break;
839 case 0x0b1: map_key_clear(KEY_PAUSE); break;
840 case 0x0b2: map_key_clear(KEY_RECORD); break;
841 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
842 case 0x0b4: map_key_clear(KEY_REWIND); break;
843 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
844 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
845 case 0x0b7: map_key_clear(KEY_STOPCD); break;
846 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
847 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
848 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
849 case 0x0bf: map_key_clear(KEY_SLOW); break;
850
851 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
852 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
853 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
854 case 0x0e2: map_key_clear(KEY_MUTE); break;
855 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
856 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
857 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
858 case 0x0f5: map_key_clear(KEY_SLOW); break;
859
860 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
861 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
862 case 0x183: map_key_clear(KEY_CONFIG); break;
863 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
864 case 0x185: map_key_clear(KEY_EDITOR); break;
865 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
866 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
867 case 0x188: map_key_clear(KEY_PRESENTATION); break;
868 case 0x189: map_key_clear(KEY_DATABASE); break;
869 case 0x18a: map_key_clear(KEY_MAIL); break;
870 case 0x18b: map_key_clear(KEY_NEWS); break;
871 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
872 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
873 case 0x18e: map_key_clear(KEY_CALENDAR); break;
874 case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
875 case 0x190: map_key_clear(KEY_JOURNAL); break;
876 case 0x191: map_key_clear(KEY_FINANCE); break;
877 case 0x192: map_key_clear(KEY_CALC); break;
878 case 0x193: map_key_clear(KEY_PLAYER); break;
879 case 0x194: map_key_clear(KEY_FILE); break;
880 case 0x196: map_key_clear(KEY_WWW); break;
881 case 0x199: map_key_clear(KEY_CHAT); break;
882 case 0x19c: map_key_clear(KEY_LOGOFF); break;
883 case 0x19e: map_key_clear(KEY_COFFEE); break;
884 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
885 case 0x1a2: map_key_clear(KEY_APPSELECT); break;
886 case 0x1a3: map_key_clear(KEY_NEXT); break;
887 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
888 case 0x1a6: map_key_clear(KEY_HELP); break;
889 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
890 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
891 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
892 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
893 case 0x1b4: map_key_clear(KEY_FILE); break;
894 case 0x1b6: map_key_clear(KEY_IMAGES); break;
895 case 0x1b7: map_key_clear(KEY_AUDIO); break;
896 case 0x1b8: map_key_clear(KEY_VIDEO); break;
897 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
898 case 0x1bd: map_key_clear(KEY_INFO); break;
899 case 0x201: map_key_clear(KEY_NEW); break;
900 case 0x202: map_key_clear(KEY_OPEN); break;
901 case 0x203: map_key_clear(KEY_CLOSE); break;
902 case 0x204: map_key_clear(KEY_EXIT); break;
903 case 0x207: map_key_clear(KEY_SAVE); break;
904 case 0x208: map_key_clear(KEY_PRINT); break;
905 case 0x209: map_key_clear(KEY_PROPS); break;
906 case 0x21a: map_key_clear(KEY_UNDO); break;
907 case 0x21b: map_key_clear(KEY_COPY); break;
908 case 0x21c: map_key_clear(KEY_CUT); break;
909 case 0x21d: map_key_clear(KEY_PASTE); break;
910 case 0x21f: map_key_clear(KEY_FIND); break;
911 case 0x221: map_key_clear(KEY_SEARCH); break;
912 case 0x222: map_key_clear(KEY_GOTO); break;
913 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
914 case 0x224: map_key_clear(KEY_BACK); break;
915 case 0x225: map_key_clear(KEY_FORWARD); break;
916 case 0x226: map_key_clear(KEY_STOP); break;
917 case 0x227: map_key_clear(KEY_REFRESH); break;
918 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
919 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
920 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
921 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
922 case 0x233: map_key_clear(KEY_SCROLLUP); break;
923 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
924 case 0x238: map_rel(REL_HWHEEL); break;
925 case 0x23d: map_key_clear(KEY_EDIT); break;
926 case 0x25f: map_key_clear(KEY_CANCEL); break;
927 case 0x269: map_key_clear(KEY_INSERT); break;
928 case 0x26a: map_key_clear(KEY_DELETE); break;
929 case 0x279: map_key_clear(KEY_REDO); break;
930
931 case 0x289: map_key_clear(KEY_REPLY); break;
932 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
933 case 0x28c: map_key_clear(KEY_SEND); break;
934
935 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
936 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
937 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
938 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
939 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
940 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
941
942 default: map_key_clear(KEY_UNKNOWN);
943 }
944 break;
945
946 case HID_UP_GENDEVCTRLS:
947 if (hidinput_setup_battery(device, HID_INPUT_REPORT, field))
948 goto ignore;
949 else
950 goto unknown;
951 break;
952
953 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
954 set_bit(EV_REP, input->evbit);
955 switch (usage->hid & HID_USAGE) {
956 case 0x021: map_key_clear(KEY_PRINT); break;
957 case 0x070: map_key_clear(KEY_HP); break;
958 case 0x071: map_key_clear(KEY_CAMERA); break;
959 case 0x072: map_key_clear(KEY_SOUND); break;
960 case 0x073: map_key_clear(KEY_QUESTION); break;
961 case 0x080: map_key_clear(KEY_EMAIL); break;
962 case 0x081: map_key_clear(KEY_CHAT); break;
963 case 0x082: map_key_clear(KEY_SEARCH); break;
964 case 0x083: map_key_clear(KEY_CONNECT); break;
965 case 0x084: map_key_clear(KEY_FINANCE); break;
966 case 0x085: map_key_clear(KEY_SPORT); break;
967 case 0x086: map_key_clear(KEY_SHOP); break;
968 default: goto ignore;
969 }
970 break;
971
972 case HID_UP_HPVENDOR2:
973 set_bit(EV_REP, input->evbit);
974 switch (usage->hid & HID_USAGE) {
975 case 0x001: map_key_clear(KEY_MICMUTE); break;
976 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
977 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
978 default: goto ignore;
979 }
980 break;
981
982 case HID_UP_MSVENDOR:
983 goto ignore;
984
985 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
986 set_bit(EV_REP, input->evbit);
987 goto ignore;
988
989 case HID_UP_LOGIVENDOR:
990 /* intentional fallback */
991 case HID_UP_LOGIVENDOR2:
992 /* intentional fallback */
993 case HID_UP_LOGIVENDOR3:
994 goto ignore;
995
996 case HID_UP_PID:
997 switch (usage->hid & HID_USAGE) {
998 case 0xa4: map_key_clear(BTN_DEAD); break;
999 default: goto ignore;
1000 }
1001 break;
1002
1003 default:
1004 unknown:
1005 if (field->report_size == 1) {
1006 if (field->report->type == HID_OUTPUT_REPORT) {
1007 map_led(LED_MISC);
1008 break;
1009 }
1010 map_key(BTN_MISC);
1011 break;
1012 }
1013 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
1014 map_rel(REL_MISC);
1015 break;
1016 }
1017 map_abs(ABS_MISC);
1018 break;
1019 }
1020
1021 mapped:
1022 if (device->driver->input_mapped && device->driver->input_mapped(device,
1023 hidinput, field, usage, &bit, &max) < 0)
1024 goto ignore;
1025
1026 set_bit(usage->type, input->evbit);
1027
1028 while (usage->code <= max && test_and_set_bit(usage->code, bit))
1029 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
1030
1031 if (usage->code > max)
1032 goto ignore;
1033
1034
1035 if (usage->type == EV_ABS) {
1036
1037 int a = field->logical_minimum;
1038 int b = field->logical_maximum;
1039
1040 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1041 a = field->logical_minimum = 0;
1042 b = field->logical_maximum = 255;
1043 }
1044
1045 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1046 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
1047 else input_set_abs_params(input, usage->code, a, b, 0, 0);
1048
1049 input_abs_set_res(input, usage->code,
1050 hidinput_calc_abs_res(field, usage->code));
1051
1052 /* use a larger default input buffer for MT devices */
1053 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1054 input_set_events_per_packet(input, 60);
1055 }
1056
1057 if (usage->type == EV_ABS &&
1058 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
1059 int i;
1060 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1061 input_set_abs_params(input, i, -1, 1, 0, 0);
1062 set_bit(i, input->absbit);
1063 }
1064 if (usage->hat_dir && !field->dpad)
1065 field->dpad = usage->code;
1066 }
1067
1068 /* for those devices which produce Consumer volume usage as relative,
1069 * we emulate pressing volumeup/volumedown appropriate number of times
1070 * in hidinput_hid_event()
1071 */
1072 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1073 (usage->code == ABS_VOLUME)) {
1074 set_bit(KEY_VOLUMEUP, input->keybit);
1075 set_bit(KEY_VOLUMEDOWN, input->keybit);
1076 }
1077
1078 if (usage->type == EV_KEY) {
1079 set_bit(EV_MSC, input->evbit);
1080 set_bit(MSC_SCAN, input->mscbit);
1081 }
1082
1083 ignore:
1084 return;
1085
1086 }
1087
1088 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1089 {
1090 struct input_dev *input;
1091 unsigned *quirks = &hid->quirks;
1092
1093 if (!field->hidinput)
1094 return;
1095
1096 input = field->hidinput->input;
1097
1098 if (!usage->type)
1099 return;
1100
1101 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1102 int hat_dir = usage->hat_dir;
1103 if (!hat_dir)
1104 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1105 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1106 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
1107 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1108 return;
1109 }
1110
1111 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
1112 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
1113 return;
1114 }
1115
1116 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
1117 if (value) {
1118 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
1119 return;
1120 }
1121 input_event(input, usage->type, usage->code, 0);
1122 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
1123 return;
1124 }
1125
1126 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
1127 int a = field->logical_minimum;
1128 int b = field->logical_maximum;
1129 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
1130 }
1131
1132 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
1133 dbg_hid("Maximum Effects - %d\n",value);
1134 return;
1135 }
1136
1137 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
1138 dbg_hid("PID Pool Report\n");
1139 return;
1140 }
1141
1142 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1143 return;
1144
1145 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1146 (usage->code == ABS_VOLUME)) {
1147 int count = abs(value);
1148 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1149 int i;
1150
1151 for (i = 0; i < count; i++) {
1152 input_event(input, EV_KEY, direction, 1);
1153 input_sync(input);
1154 input_event(input, EV_KEY, direction, 0);
1155 input_sync(input);
1156 }
1157 return;
1158 }
1159
1160 /*
1161 * Ignore out-of-range values as per HID specification,
1162 * section 5.10 and 6.2.25, when NULL state bit is present.
1163 * When it's not, clamp the value to match Microsoft's input
1164 * driver as mentioned in "Required HID usages for digitizers":
1165 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
1166 *
1167 * The logical_minimum < logical_maximum check is done so that we
1168 * don't unintentionally discard values sent by devices which
1169 * don't specify logical min and max.
1170 */
1171 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1172 (field->logical_minimum < field->logical_maximum)) {
1173 if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
1174 (value < field->logical_minimum ||
1175 value > field->logical_maximum)) {
1176 dbg_hid("Ignoring out-of-range value %x\n", value);
1177 return;
1178 }
1179 value = clamp(value,
1180 field->logical_minimum,
1181 field->logical_maximum);
1182 }
1183
1184 /*
1185 * Ignore reports for absolute data if the data didn't change. This is
1186 * not only an optimization but also fixes 'dead' key reports. Some
1187 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1188 * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1189 * can only have one of them physically available. The 'dead' keys
1190 * report constant 0. As all map to the same keycode, they'd confuse
1191 * the input layer. If we filter the 'dead' keys on the HID level, we
1192 * skip the keycode translation and only forward real events.
1193 */
1194 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1195 HID_MAIN_ITEM_BUFFERED_BYTE)) &&
1196 (field->flags & HID_MAIN_ITEM_VARIABLE) &&
1197 usage->usage_index < field->maxusage &&
1198 value == field->value[usage->usage_index])
1199 return;
1200
1201 /* report the usage code as scancode if the key status has changed */
1202 if (usage->type == EV_KEY &&
1203 (!test_bit(usage->code, input->key)) == value)
1204 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1205
1206 input_event(input, usage->type, usage->code, value);
1207
1208 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1209 usage->type == EV_KEY && value) {
1210 input_sync(input);
1211 input_event(input, usage->type, usage->code, 0);
1212 }
1213 }
1214
1215 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1216 {
1217 struct hid_input *hidinput;
1218
1219 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1220 return;
1221
1222 list_for_each_entry(hidinput, &hid->inputs, list)
1223 input_sync(hidinput->input);
1224 }
1225 EXPORT_SYMBOL_GPL(hidinput_report_event);
1226
1227 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1228 {
1229 struct hid_report *report;
1230 int i, j;
1231
1232 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1233 for (i = 0; i < report->maxfield; i++) {
1234 *field = report->field[i];
1235 for (j = 0; j < (*field)->maxusage; j++)
1236 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1237 return j;
1238 }
1239 }
1240 return -1;
1241 }
1242 EXPORT_SYMBOL_GPL(hidinput_find_field);
1243
1244 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1245 {
1246 struct hid_report *report;
1247 struct hid_field *field;
1248 int i, j;
1249
1250 list_for_each_entry(report,
1251 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1252 list) {
1253 for (i = 0; i < report->maxfield; i++) {
1254 field = report->field[i];
1255 for (j = 0; j < field->maxusage; j++)
1256 if (field->usage[j].type == EV_LED)
1257 return field;
1258 }
1259 }
1260 return NULL;
1261 }
1262 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1263
1264 unsigned int hidinput_count_leds(struct hid_device *hid)
1265 {
1266 struct hid_report *report;
1267 struct hid_field *field;
1268 int i, j;
1269 unsigned int count = 0;
1270
1271 list_for_each_entry(report,
1272 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1273 list) {
1274 for (i = 0; i < report->maxfield; i++) {
1275 field = report->field[i];
1276 for (j = 0; j < field->maxusage; j++)
1277 if (field->usage[j].type == EV_LED &&
1278 field->value[j])
1279 count += 1;
1280 }
1281 }
1282 return count;
1283 }
1284 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1285
1286 static void hidinput_led_worker(struct work_struct *work)
1287 {
1288 struct hid_device *hid = container_of(work, struct hid_device,
1289 led_work);
1290 struct hid_field *field;
1291 struct hid_report *report;
1292 int len, ret;
1293 __u8 *buf;
1294
1295 field = hidinput_get_led_field(hid);
1296 if (!field)
1297 return;
1298
1299 /*
1300 * field->report is accessed unlocked regarding HID core. So there might
1301 * be another incoming SET-LED request from user-space, which changes
1302 * the LED state while we assemble our outgoing buffer. However, this
1303 * doesn't matter as hid_output_report() correctly converts it into a
1304 * boolean value no matter what information is currently set on the LED
1305 * field (even garbage). So the remote device will always get a valid
1306 * request.
1307 * And in case we send a wrong value, a next led worker is spawned
1308 * for every SET-LED request so the following worker will send the
1309 * correct value, guaranteed!
1310 */
1311
1312 report = field->report;
1313
1314 /* use custom SET_REPORT request if possible (asynchronous) */
1315 if (hid->ll_driver->request)
1316 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1317
1318 /* fall back to generic raw-output-report */
1319 len = hid_report_len(report);
1320 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1321 if (!buf)
1322 return;
1323
1324 hid_output_report(report, buf);
1325 /* synchronous output report */
1326 ret = hid_hw_output_report(hid, buf, len);
1327 if (ret == -ENOSYS)
1328 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1329 HID_REQ_SET_REPORT);
1330 kfree(buf);
1331 }
1332
1333 static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1334 unsigned int code, int value)
1335 {
1336 struct hid_device *hid = input_get_drvdata(dev);
1337 struct hid_field *field;
1338 int offset;
1339
1340 if (type == EV_FF)
1341 return input_ff_event(dev, type, code, value);
1342
1343 if (type != EV_LED)
1344 return -1;
1345
1346 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1347 hid_warn(dev, "event field not found\n");
1348 return -1;
1349 }
1350
1351 hid_set_field(field, offset, value);
1352
1353 schedule_work(&hid->led_work);
1354 return 0;
1355 }
1356
1357 static int hidinput_open(struct input_dev *dev)
1358 {
1359 struct hid_device *hid = input_get_drvdata(dev);
1360
1361 return hid_hw_open(hid);
1362 }
1363
1364 static void hidinput_close(struct input_dev *dev)
1365 {
1366 struct hid_device *hid = input_get_drvdata(dev);
1367
1368 hid_hw_close(hid);
1369 }
1370
1371 static void report_features(struct hid_device *hid)
1372 {
1373 struct hid_driver *drv = hid->driver;
1374 struct hid_report_enum *rep_enum;
1375 struct hid_report *rep;
1376 int i, j;
1377
1378 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1379 list_for_each_entry(rep, &rep_enum->report_list, list)
1380 for (i = 0; i < rep->maxfield; i++) {
1381 /* Ignore if report count is out of bounds. */
1382 if (rep->field[i]->report_count < 1)
1383 continue;
1384
1385 for (j = 0; j < rep->field[i]->maxusage; j++) {
1386 /* Verify if Battery Strength feature is available */
1387 hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);
1388
1389 if (drv->feature_mapping)
1390 drv->feature_mapping(hid, rep->field[i],
1391 rep->field[i]->usage + j);
1392 }
1393 }
1394 }
1395
1396 static struct hid_input *hidinput_allocate(struct hid_device *hid)
1397 {
1398 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1399 struct input_dev *input_dev = input_allocate_device();
1400 if (!hidinput || !input_dev) {
1401 kfree(hidinput);
1402 input_free_device(input_dev);
1403 hid_err(hid, "Out of memory during hid input probe\n");
1404 return NULL;
1405 }
1406
1407 input_set_drvdata(input_dev, hid);
1408 input_dev->event = hidinput_input_event;
1409 input_dev->open = hidinput_open;
1410 input_dev->close = hidinput_close;
1411 input_dev->setkeycode = hidinput_setkeycode;
1412 input_dev->getkeycode = hidinput_getkeycode;
1413
1414 input_dev->name = hid->name;
1415 input_dev->phys = hid->phys;
1416 input_dev->uniq = hid->uniq;
1417 input_dev->id.bustype = hid->bus;
1418 input_dev->id.vendor = hid->vendor;
1419 input_dev->id.product = hid->product;
1420 input_dev->id.version = hid->version;
1421 input_dev->dev.parent = &hid->dev;
1422 hidinput->input = input_dev;
1423 list_add_tail(&hidinput->list, &hid->inputs);
1424
1425 return hidinput;
1426 }
1427
1428 static bool hidinput_has_been_populated(struct hid_input *hidinput)
1429 {
1430 int i;
1431 unsigned long r = 0;
1432
1433 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
1434 r |= hidinput->input->evbit[i];
1435
1436 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
1437 r |= hidinput->input->keybit[i];
1438
1439 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
1440 r |= hidinput->input->relbit[i];
1441
1442 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
1443 r |= hidinput->input->absbit[i];
1444
1445 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
1446 r |= hidinput->input->mscbit[i];
1447
1448 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
1449 r |= hidinput->input->ledbit[i];
1450
1451 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
1452 r |= hidinput->input->sndbit[i];
1453
1454 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
1455 r |= hidinput->input->ffbit[i];
1456
1457 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
1458 r |= hidinput->input->swbit[i];
1459
1460 return !!r;
1461 }
1462
1463 static void hidinput_cleanup_hidinput(struct hid_device *hid,
1464 struct hid_input *hidinput)
1465 {
1466 struct hid_report *report;
1467 int i, k;
1468
1469 list_del(&hidinput->list);
1470 input_free_device(hidinput->input);
1471
1472 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1473 if (k == HID_OUTPUT_REPORT &&
1474 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1475 continue;
1476
1477 list_for_each_entry(report, &hid->report_enum[k].report_list,
1478 list) {
1479
1480 for (i = 0; i < report->maxfield; i++)
1481 if (report->field[i]->hidinput == hidinput)
1482 report->field[i]->hidinput = NULL;
1483 }
1484 }
1485
1486 kfree(hidinput);
1487 }
1488
1489 static struct hid_input *hidinput_match(struct hid_report *report)
1490 {
1491 struct hid_device *hid = report->device;
1492 struct hid_input *hidinput;
1493
1494 list_for_each_entry(hidinput, &hid->inputs, list) {
1495 if (hidinput->report &&
1496 hidinput->report->id == report->id)
1497 return hidinput;
1498 }
1499
1500 return NULL;
1501 }
1502
1503 static inline void hidinput_configure_usages(struct hid_input *hidinput,
1504 struct hid_report *report)
1505 {
1506 int i, j;
1507
1508 for (i = 0; i < report->maxfield; i++)
1509 for (j = 0; j < report->field[i]->maxusage; j++)
1510 hidinput_configure_usage(hidinput, report->field[i],
1511 report->field[i]->usage + j);
1512 }
1513
1514 /*
1515 * Register the input device; print a message.
1516 * Configure the input layer interface
1517 * Read all reports and initialize the absolute field values.
1518 */
1519
1520 int hidinput_connect(struct hid_device *hid, unsigned int force)
1521 {
1522 struct hid_driver *drv = hid->driver;
1523 struct hid_report *report;
1524 struct hid_input *next, *hidinput = NULL;
1525 int i, k;
1526
1527 INIT_LIST_HEAD(&hid->inputs);
1528 INIT_WORK(&hid->led_work, hidinput_led_worker);
1529
1530 if (!force) {
1531 for (i = 0; i < hid->maxcollection; i++) {
1532 struct hid_collection *col = &hid->collection[i];
1533 if (col->type == HID_COLLECTION_APPLICATION ||
1534 col->type == HID_COLLECTION_PHYSICAL)
1535 if (IS_INPUT_APPLICATION(col->usage))
1536 break;
1537 }
1538
1539 if (i == hid->maxcollection)
1540 return -1;
1541 }
1542
1543 report_features(hid);
1544
1545 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1546 if (k == HID_OUTPUT_REPORT &&
1547 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1548 continue;
1549
1550 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1551
1552 if (!report->maxfield)
1553 continue;
1554
1555 /*
1556 * Find the previous hidinput report attached
1557 * to this report id.
1558 */
1559 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
1560 hidinput = hidinput_match(report);
1561
1562 if (!hidinput) {
1563 hidinput = hidinput_allocate(hid);
1564 if (!hidinput)
1565 goto out_unwind;
1566 }
1567
1568 hidinput_configure_usages(hidinput, report);
1569
1570 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
1571 hidinput->report = report;
1572 }
1573 }
1574
1575 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1576 if ((hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1577 !hidinput_has_been_populated(hidinput)) {
1578 /* no need to register an input device not populated */
1579 hidinput_cleanup_hidinput(hid, hidinput);
1580 continue;
1581 }
1582
1583 if (drv->input_configured &&
1584 drv->input_configured(hid, hidinput))
1585 goto out_unwind;
1586 if (input_register_device(hidinput->input))
1587 goto out_unwind;
1588 hidinput->registered = true;
1589 }
1590
1591 if (list_empty(&hid->inputs)) {
1592 hid_err(hid, "No inputs registered, leaving\n");
1593 goto out_unwind;
1594 }
1595
1596 return 0;
1597
1598 out_unwind:
1599 /* unwind the ones we already registered */
1600 hidinput_disconnect(hid);
1601
1602 return -1;
1603 }
1604 EXPORT_SYMBOL_GPL(hidinput_connect);
1605
1606 void hidinput_disconnect(struct hid_device *hid)
1607 {
1608 struct hid_input *hidinput, *next;
1609
1610 hidinput_cleanup_battery(hid);
1611
1612 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1613 list_del(&hidinput->list);
1614 if (hidinput->registered)
1615 input_unregister_device(hidinput->input);
1616 else
1617 input_free_device(hidinput->input);
1618 kfree(hidinput);
1619 }
1620
1621 /* led_work is spawned by input_dev callbacks, but doesn't access the
1622 * parent input_dev at all. Once all input devices are removed, we
1623 * know that led_work will never get restarted, so we can cancel it
1624 * synchronously and are safe. */
1625 cancel_work_sync(&hid->led_work);
1626 }
1627 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1628
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