1 // SPDX-License-Identifier: GPL-2.0-or-later
2 /*
3 * Copyright (c) 2000-2001 Vojtech Pavlik
4 * Copyright (c) 2006-2010 Jiri Kosina
5 *
6 * HID to Linux Input mapping
7 */
8
9 /*
10 *
11 * Should you need to contact me, the author, you can do so either by
12 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
13 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
14 */
15
16 #include <linux/module.h>
17 #include <linux/slab.h>
18 #include <linux/kernel.h>
19
20 #include <linux/hid.h>
21 #include <linux/hid-debug.h>
22
23 #include "hid-ids.h"
24
25 #define unk KEY_UNKNOWN
26
27 static const unsigned char hid_keyboard[256] = {
28 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
29 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
30 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
31 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
32 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
33 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
34 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
35 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
36 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
37 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,
38 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
39 unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk,
40 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
41 unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk,
42 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
43 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
44 };
45
46 static const struct {
47 __s32 x;
48 __s32 y;
49 } hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
50
51 struct usage_priority {
52 __u32 usage; /* the HID usage associated */
53 bool global; /* we assume all usages to be slotted,
54 * unless global
55 */
56 unsigned int slot_overwrite; /* for globals: allows to set the usage
57 * before or after the slots
58 */
59 };
60
61 /*
62 * hid-input will convert this list into priorities:
63 * the first element will have the highest priority
64 * (the length of the following array) and the last
65 * element the lowest (1).
66 *
67 * hid-input will then shift the priority by 8 bits to leave some space
68 * in case drivers want to interleave other fields.
69 *
70 * To accommodate slotted devices, the slot priority is
71 * defined in the next 8 bits (defined by 0xff - slot).
72 *
73 * If drivers want to add fields before those, hid-input will
74 * leave out the first 8 bits of the priority value.
75 *
76 * This still leaves us 65535 individual priority values.
77 */
78 static const struct usage_priority hidinput_usages_priorities[] = {
79 { /* Eraser (eraser touching) must always come before tipswitch */
80 .usage = HID_DG_ERASER,
81 },
82 { /* Invert must always come before In Range */
83 .usage = HID_DG_INVERT,
84 },
85 { /* Is the tip of the tool touching? */
86 .usage = HID_DG_TIPSWITCH,
87 },
88 { /* Tip Pressure might emulate tip switch */
89 .usage = HID_DG_TIPPRESSURE,
90 },
91 { /* In Range needs to come after the other tool states */
92 .usage = HID_DG_INRANGE,
93 },
94 };
95
96 #define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
97 #define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
98 #define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
99 #define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
100 #define map_msc(c) hid_map_usage(hidinput, usage, &bit, &max, EV_MSC, (c))
101
102 #define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
103 &max, EV_ABS, (c))
104 #define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
105 &max, EV_KEY, (c))
106
match_scancode(struct hid_usage * usage,unsigned int cur_idx,unsigned int scancode)107 static bool match_scancode(struct hid_usage *usage,
108 unsigned int cur_idx, unsigned int scancode)
109 {
110 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
111 }
112
match_keycode(struct hid_usage * usage,unsigned int cur_idx,unsigned int keycode)113 static bool match_keycode(struct hid_usage *usage,
114 unsigned int cur_idx, unsigned int keycode)
115 {
116 /*
117 * We should exclude unmapped usages when doing lookup by keycode.
118 */
119 return (usage->type == EV_KEY && usage->code == keycode);
120 }
121
match_index(struct hid_usage * usage,unsigned int cur_idx,unsigned int idx)122 static bool match_index(struct hid_usage *usage,
123 unsigned int cur_idx, unsigned int idx)
124 {
125 return cur_idx == idx;
126 }
127
128 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
129 unsigned int cur_idx, unsigned int val);
130
hidinput_find_key(struct hid_device * hid,hid_usage_cmp_t match,unsigned int value,unsigned int * usage_idx)131 static struct hid_usage *hidinput_find_key(struct hid_device *hid,
132 hid_usage_cmp_t match,
133 unsigned int value,
134 unsigned int *usage_idx)
135 {
136 unsigned int i, j, k, cur_idx = 0;
137 struct hid_report *report;
138 struct hid_usage *usage;
139
140 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
141 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
142 for (i = 0; i < report->maxfield; i++) {
143 for (j = 0; j < report->field[i]->maxusage; j++) {
144 usage = report->field[i]->usage + j;
145 if (usage->type == EV_KEY || usage->type == 0) {
146 if (match(usage, cur_idx, value)) {
147 if (usage_idx)
148 *usage_idx = cur_idx;
149 return usage;
150 }
151 cur_idx++;
152 }
153 }
154 }
155 }
156 }
157 return NULL;
158 }
159
hidinput_locate_usage(struct hid_device * hid,const struct input_keymap_entry * ke,unsigned int * index)160 static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
161 const struct input_keymap_entry *ke,
162 unsigned int *index)
163 {
164 struct hid_usage *usage;
165 unsigned int scancode;
166
167 if (ke->flags & INPUT_KEYMAP_BY_INDEX)
168 usage = hidinput_find_key(hid, match_index, ke->index, index);
169 else if (input_scancode_to_scalar(ke, &scancode) == 0)
170 usage = hidinput_find_key(hid, match_scancode, scancode, index);
171 else
172 usage = NULL;
173
174 return usage;
175 }
176
hidinput_getkeycode(struct input_dev * dev,struct input_keymap_entry * ke)177 static int hidinput_getkeycode(struct input_dev *dev,
178 struct input_keymap_entry *ke)
179 {
180 struct hid_device *hid = input_get_drvdata(dev);
181 struct hid_usage *usage;
182 unsigned int scancode, index;
183
184 usage = hidinput_locate_usage(hid, ke, &index);
185 if (usage) {
186 ke->keycode = usage->type == EV_KEY ?
187 usage->code : KEY_RESERVED;
188 ke->index = index;
189 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
190 ke->len = sizeof(scancode);
191 memcpy(ke->scancode, &scancode, sizeof(scancode));
192 return 0;
193 }
194
195 return -EINVAL;
196 }
197
hidinput_setkeycode(struct input_dev * dev,const struct input_keymap_entry * ke,unsigned int * old_keycode)198 static int hidinput_setkeycode(struct input_dev *dev,
199 const struct input_keymap_entry *ke,
200 unsigned int *old_keycode)
201 {
202 struct hid_device *hid = input_get_drvdata(dev);
203 struct hid_usage *usage;
204
205 usage = hidinput_locate_usage(hid, ke, NULL);
206 if (usage) {
207 *old_keycode = usage->type == EV_KEY ?
208 usage->code : KEY_RESERVED;
209 usage->type = EV_KEY;
210 usage->code = ke->keycode;
211
212 clear_bit(*old_keycode, dev->keybit);
213 set_bit(usage->code, dev->keybit);
214 dbg_hid("Assigned keycode %d to HID usage code %x\n",
215 usage->code, usage->hid);
216
217 /*
218 * Set the keybit for the old keycode if the old keycode is used
219 * by another key
220 */
221 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
222 set_bit(*old_keycode, dev->keybit);
223
224 return 0;
225 }
226
227 return -EINVAL;
228 }
229
230
231 /**
232 * hidinput_calc_abs_res - calculate an absolute axis resolution
233 * @field: the HID report field to calculate resolution for
234 * @code: axis code
235 *
236 * The formula is:
237 * (logical_maximum - logical_minimum)
238 * resolution = ----------------------------------------------------------
239 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent
240 *
241 * as seen in the HID specification v1.11 6.2.2.7 Global Items.
242 *
243 * Only exponent 1 length units are processed. Centimeters and inches are
244 * converted to millimeters. Degrees are converted to radians.
245 */
hidinput_calc_abs_res(const struct hid_field * field,__u16 code)246 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
247 {
248 __s32 unit_exponent = field->unit_exponent;
249 __s32 logical_extents = field->logical_maximum -
250 field->logical_minimum;
251 __s32 physical_extents = field->physical_maximum -
252 field->physical_minimum;
253 __s32 prev;
254
255 /* Check if the extents are sane */
256 if (logical_extents <= 0 || physical_extents <= 0)
257 return 0;
258
259 /*
260 * Verify and convert units.
261 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
262 */
263 switch (code) {
264 case ABS_X:
265 case ABS_Y:
266 case ABS_Z:
267 case ABS_MT_POSITION_X:
268 case ABS_MT_POSITION_Y:
269 case ABS_MT_TOOL_X:
270 case ABS_MT_TOOL_Y:
271 case ABS_MT_TOUCH_MAJOR:
272 case ABS_MT_TOUCH_MINOR:
273 if (field->unit == 0x11) { /* If centimeters */
274 /* Convert to millimeters */
275 unit_exponent += 1;
276 } else if (field->unit == 0x13) { /* If inches */
277 /* Convert to millimeters */
278 prev = physical_extents;
279 physical_extents *= 254;
280 if (physical_extents < prev)
281 return 0;
282 unit_exponent -= 1;
283 } else {
284 return 0;
285 }
286 break;
287
288 case ABS_RX:
289 case ABS_RY:
290 case ABS_RZ:
291 case ABS_WHEEL:
292 case ABS_TILT_X:
293 case ABS_TILT_Y:
294 if (field->unit == 0x14) { /* If degrees */
295 /* Convert to radians */
296 prev = logical_extents;
297 logical_extents *= 573;
298 if (logical_extents < prev)
299 return 0;
300 unit_exponent += 1;
301 } else if (field->unit != 0x12) { /* If not radians */
302 return 0;
303 }
304 break;
305
306 default:
307 return 0;
308 }
309
310 /* Apply negative unit exponent */
311 for (; unit_exponent < 0; unit_exponent++) {
312 prev = logical_extents;
313 logical_extents *= 10;
314 if (logical_extents < prev)
315 return 0;
316 }
317 /* Apply positive unit exponent */
318 for (; unit_exponent > 0; unit_exponent--) {
319 prev = physical_extents;
320 physical_extents *= 10;
321 if (physical_extents < prev)
322 return 0;
323 }
324
325 /* Calculate resolution */
326 return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
327 }
328 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
329
330 #ifdef CONFIG_HID_BATTERY_STRENGTH
331 static enum power_supply_property hidinput_battery_props[] = {
332 POWER_SUPPLY_PROP_PRESENT,
333 POWER_SUPPLY_PROP_ONLINE,
334 POWER_SUPPLY_PROP_CAPACITY,
335 POWER_SUPPLY_PROP_MODEL_NAME,
336 POWER_SUPPLY_PROP_STATUS,
337 POWER_SUPPLY_PROP_SCOPE,
338 };
339
340 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
341 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
342 #define HID_BATTERY_QUIRK_IGNORE (1 << 2) /* completely ignore the battery */
343 #define HID_BATTERY_QUIRK_AVOID_QUERY (1 << 3) /* do not query the battery */
344
345 static const struct hid_device_id hid_battery_quirks[] = {
346 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
347 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
348 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
349 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
350 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
351 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
352 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
353 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
354 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
355 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
356 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO),
357 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
358 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
359 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
360 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
361 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
362 USB_DEVICE_ID_APPLE_MAGICTRACKPAD),
363 HID_BATTERY_QUIRK_IGNORE },
364 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM,
365 USB_DEVICE_ID_ELECOM_BM084),
366 HID_BATTERY_QUIRK_IGNORE },
367 { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL,
368 USB_DEVICE_ID_SYMBOL_SCANNER_3),
369 HID_BATTERY_QUIRK_IGNORE },
370 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
371 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD),
372 HID_BATTERY_QUIRK_IGNORE },
373 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
374 USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD),
375 HID_BATTERY_QUIRK_IGNORE },
376 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN),
377 HID_BATTERY_QUIRK_IGNORE },
378 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN),
379 HID_BATTERY_QUIRK_IGNORE },
380 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_L),
381 HID_BATTERY_QUIRK_AVOID_QUERY },
382 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_MW),
383 HID_BATTERY_QUIRK_AVOID_QUERY },
384 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_SW),
385 HID_BATTERY_QUIRK_AVOID_QUERY },
386 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_CHROMEBOOK_TROGDOR_POMPOM),
387 HID_BATTERY_QUIRK_AVOID_QUERY },
388 /*
389 * Elan I2C-HID touchscreens seem to all report a non present battery,
390 * set HID_BATTERY_QUIRK_IGNORE for all Elan I2C-HID devices.
391 */
392 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, HID_ANY_ID), HID_BATTERY_QUIRK_IGNORE },
393 {}
394 };
395
find_battery_quirk(struct hid_device * hdev)396 static unsigned find_battery_quirk(struct hid_device *hdev)
397 {
398 unsigned quirks = 0;
399 const struct hid_device_id *match;
400
401 match = hid_match_id(hdev, hid_battery_quirks);
402 if (match != NULL)
403 quirks = match->driver_data;
404
405 return quirks;
406 }
407
hidinput_scale_battery_capacity(struct hid_device * dev,int value)408 static int hidinput_scale_battery_capacity(struct hid_device *dev,
409 int value)
410 {
411 if (dev->battery_min < dev->battery_max &&
412 value >= dev->battery_min && value <= dev->battery_max)
413 value = ((value - dev->battery_min) * 100) /
414 (dev->battery_max - dev->battery_min);
415
416 return value;
417 }
418
hidinput_query_battery_capacity(struct hid_device * dev)419 static int hidinput_query_battery_capacity(struct hid_device *dev)
420 {
421 u8 *buf;
422 int ret;
423
424 buf = kmalloc(4, GFP_KERNEL);
425 if (!buf)
426 return -ENOMEM;
427
428 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4,
429 dev->battery_report_type, HID_REQ_GET_REPORT);
430 if (ret < 2) {
431 kfree(buf);
432 return -ENODATA;
433 }
434
435 ret = hidinput_scale_battery_capacity(dev, buf[1]);
436 kfree(buf);
437 return ret;
438 }
439
hidinput_get_battery_property(struct power_supply * psy,enum power_supply_property prop,union power_supply_propval * val)440 static int hidinput_get_battery_property(struct power_supply *psy,
441 enum power_supply_property prop,
442 union power_supply_propval *val)
443 {
444 struct hid_device *dev = power_supply_get_drvdata(psy);
445 int value;
446 int ret = 0;
447
448 switch (prop) {
449 case POWER_SUPPLY_PROP_PRESENT:
450 case POWER_SUPPLY_PROP_ONLINE:
451 val->intval = 1;
452 break;
453
454 case POWER_SUPPLY_PROP_CAPACITY:
455 if (dev->battery_status != HID_BATTERY_REPORTED &&
456 !dev->battery_avoid_query) {
457 value = hidinput_query_battery_capacity(dev);
458 if (value < 0)
459 return value;
460 } else {
461 value = dev->battery_capacity;
462 }
463
464 val->intval = value;
465 break;
466
467 case POWER_SUPPLY_PROP_MODEL_NAME:
468 val->strval = dev->name;
469 break;
470
471 case POWER_SUPPLY_PROP_STATUS:
472 if (dev->battery_status != HID_BATTERY_REPORTED &&
473 !dev->battery_avoid_query) {
474 value = hidinput_query_battery_capacity(dev);
475 if (value < 0)
476 return value;
477
478 dev->battery_capacity = value;
479 dev->battery_status = HID_BATTERY_QUERIED;
480 }
481
482 if (dev->battery_status == HID_BATTERY_UNKNOWN)
483 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
484 else
485 val->intval = dev->battery_charge_status;
486 break;
487
488 case POWER_SUPPLY_PROP_SCOPE:
489 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
490 break;
491
492 default:
493 ret = -EINVAL;
494 break;
495 }
496
497 return ret;
498 }
499
hidinput_setup_battery(struct hid_device * dev,unsigned report_type,struct hid_field * field,bool is_percentage)500 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
501 struct hid_field *field, bool is_percentage)
502 {
503 struct power_supply_desc *psy_desc;
504 struct power_supply_config psy_cfg = { .drv_data = dev, };
505 unsigned quirks;
506 s32 min, max;
507 int error;
508
509 if (dev->battery)
510 return 0; /* already initialized? */
511
512 quirks = find_battery_quirk(dev);
513
514 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
515 dev->bus, dev->vendor, dev->product, dev->version, quirks);
516
517 if (quirks & HID_BATTERY_QUIRK_IGNORE)
518 return 0;
519
520 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
521 if (!psy_desc)
522 return -ENOMEM;
523
524 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery",
525 strlen(dev->uniq) ?
526 dev->uniq : dev_name(&dev->dev));
527 if (!psy_desc->name) {
528 error = -ENOMEM;
529 goto err_free_mem;
530 }
531
532 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
533 psy_desc->properties = hidinput_battery_props;
534 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
535 psy_desc->use_for_apm = 0;
536 psy_desc->get_property = hidinput_get_battery_property;
537
538 min = field->logical_minimum;
539 max = field->logical_maximum;
540
541 if (is_percentage || (quirks & HID_BATTERY_QUIRK_PERCENT)) {
542 min = 0;
543 max = 100;
544 }
545
546 if (quirks & HID_BATTERY_QUIRK_FEATURE)
547 report_type = HID_FEATURE_REPORT;
548
549 dev->battery_min = min;
550 dev->battery_max = max;
551 dev->battery_report_type = report_type;
552 dev->battery_report_id = field->report->id;
553 dev->battery_charge_status = POWER_SUPPLY_STATUS_DISCHARGING;
554
555 /*
556 * Stylus is normally not connected to the device and thus we
557 * can't query the device and get meaningful battery strength.
558 * We have to wait for the device to report it on its own.
559 */
560 dev->battery_avoid_query = report_type == HID_INPUT_REPORT &&
561 field->physical == HID_DG_STYLUS;
562
563 if (quirks & HID_BATTERY_QUIRK_AVOID_QUERY)
564 dev->battery_avoid_query = true;
565
566 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
567 if (IS_ERR(dev->battery)) {
568 error = PTR_ERR(dev->battery);
569 hid_warn(dev, "can't register power supply: %d\n", error);
570 goto err_free_name;
571 }
572
573 power_supply_powers(dev->battery, &dev->dev);
574 return 0;
575
576 err_free_name:
577 kfree(psy_desc->name);
578 err_free_mem:
579 kfree(psy_desc);
580 dev->battery = NULL;
581 return error;
582 }
583
hidinput_cleanup_battery(struct hid_device * dev)584 static void hidinput_cleanup_battery(struct hid_device *dev)
585 {
586 const struct power_supply_desc *psy_desc;
587
588 if (!dev->battery)
589 return;
590
591 psy_desc = dev->battery->desc;
592 power_supply_unregister(dev->battery);
593 kfree(psy_desc->name);
594 kfree(psy_desc);
595 dev->battery = NULL;
596 }
597
hidinput_update_battery_charge_status(struct hid_device * dev,unsigned int usage,int value)598 static bool hidinput_update_battery_charge_status(struct hid_device *dev,
599 unsigned int usage, int value)
600 {
601 switch (usage) {
602 case HID_BAT_CHARGING:
603 dev->battery_charge_status = value ?
604 POWER_SUPPLY_STATUS_CHARGING :
605 POWER_SUPPLY_STATUS_DISCHARGING;
606 return true;
607 }
608
609 return false;
610 }
611
hidinput_update_battery(struct hid_device * dev,unsigned int usage,int value)612 static void hidinput_update_battery(struct hid_device *dev, unsigned int usage,
613 int value)
614 {
615 int capacity;
616
617 if (!dev->battery)
618 return;
619
620 if (hidinput_update_battery_charge_status(dev, usage, value)) {
621 power_supply_changed(dev->battery);
622 return;
623 }
624
625 if (value == 0 || value < dev->battery_min || value > dev->battery_max)
626 return;
627
628 capacity = hidinput_scale_battery_capacity(dev, value);
629
630 if (dev->battery_status != HID_BATTERY_REPORTED ||
631 capacity != dev->battery_capacity ||
632 ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) {
633 dev->battery_capacity = capacity;
634 dev->battery_status = HID_BATTERY_REPORTED;
635 dev->battery_ratelimit_time =
636 ktime_add_ms(ktime_get_coarse(), 30 * 1000);
637 power_supply_changed(dev->battery);
638 }
639 }
640 #else /* !CONFIG_HID_BATTERY_STRENGTH */
hidinput_setup_battery(struct hid_device * dev,unsigned report_type,struct hid_field * field,bool is_percentage)641 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
642 struct hid_field *field, bool is_percentage)
643 {
644 return 0;
645 }
646
hidinput_cleanup_battery(struct hid_device * dev)647 static void hidinput_cleanup_battery(struct hid_device *dev)
648 {
649 }
650
hidinput_update_battery(struct hid_device * dev,unsigned int usage,int value)651 static void hidinput_update_battery(struct hid_device *dev, unsigned int usage,
652 int value)
653 {
654 }
655 #endif /* CONFIG_HID_BATTERY_STRENGTH */
656
hidinput_field_in_collection(struct hid_device * device,struct hid_field * field,unsigned int type,unsigned int usage)657 static bool hidinput_field_in_collection(struct hid_device *device, struct hid_field *field,
658 unsigned int type, unsigned int usage)
659 {
660 struct hid_collection *collection;
661
662 collection = &device->collection[field->usage->collection_index];
663
664 return collection->type == type && collection->usage == usage;
665 }
666
hidinput_configure_usage(struct hid_input * hidinput,struct hid_field * field,struct hid_usage * usage,unsigned int usage_index)667 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
668 struct hid_usage *usage, unsigned int usage_index)
669 {
670 struct input_dev *input = hidinput->input;
671 struct hid_device *device = input_get_drvdata(input);
672 const struct usage_priority *usage_priority = NULL;
673 int max = 0, code;
674 unsigned int i = 0;
675 unsigned long *bit = NULL;
676
677 field->hidinput = hidinput;
678
679 if (field->flags & HID_MAIN_ITEM_CONSTANT)
680 goto ignore;
681
682 /* Ignore if report count is out of bounds. */
683 if (field->report_count < 1)
684 goto ignore;
685
686 /* only LED usages are supported in output fields */
687 if (field->report_type == HID_OUTPUT_REPORT &&
688 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
689 goto ignore;
690 }
691
692 /* assign a priority based on the static list declared here */
693 for (i = 0; i < ARRAY_SIZE(hidinput_usages_priorities); i++) {
694 if (usage->hid == hidinput_usages_priorities[i].usage) {
695 usage_priority = &hidinput_usages_priorities[i];
696
697 field->usages_priorities[usage_index] =
698 (ARRAY_SIZE(hidinput_usages_priorities) - i) << 8;
699 break;
700 }
701 }
702
703 /*
704 * For slotted devices, we need to also add the slot index
705 * in the priority.
706 */
707 if (usage_priority && usage_priority->global)
708 field->usages_priorities[usage_index] |=
709 usage_priority->slot_overwrite;
710 else
711 field->usages_priorities[usage_index] |=
712 (0xff - field->slot_idx) << 16;
713
714 if (device->driver->input_mapping) {
715 int ret = device->driver->input_mapping(device, hidinput, field,
716 usage, &bit, &max);
717 if (ret > 0)
718 goto mapped;
719 if (ret < 0)
720 goto ignore;
721 }
722
723 switch (usage->hid & HID_USAGE_PAGE) {
724 case HID_UP_UNDEFINED:
725 goto ignore;
726
727 case HID_UP_KEYBOARD:
728 set_bit(EV_REP, input->evbit);
729
730 if ((usage->hid & HID_USAGE) < 256) {
731 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
732 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
733 } else
734 map_key(KEY_UNKNOWN);
735
736 break;
737
738 case HID_UP_BUTTON:
739 code = ((usage->hid - 1) & HID_USAGE);
740
741 switch (field->application) {
742 case HID_GD_MOUSE:
743 case HID_GD_POINTER: code += BTN_MOUSE; break;
744 case HID_GD_JOYSTICK:
745 if (code <= 0xf)
746 code += BTN_JOYSTICK;
747 else
748 code += BTN_TRIGGER_HAPPY - 0x10;
749 break;
750 case HID_GD_GAMEPAD:
751 if (code <= 0xf)
752 code += BTN_GAMEPAD;
753 else
754 code += BTN_TRIGGER_HAPPY - 0x10;
755 break;
756 case HID_CP_CONSUMER_CONTROL:
757 if (hidinput_field_in_collection(device, field,
758 HID_COLLECTION_NAMED_ARRAY,
759 HID_CP_PROGRAMMABLEBUTTONS)) {
760 if (code <= 0x1d)
761 code += KEY_MACRO1;
762 else
763 code += BTN_TRIGGER_HAPPY - 0x1e;
764 break;
765 }
766 fallthrough;
767 default:
768 switch (field->physical) {
769 case HID_GD_MOUSE:
770 case HID_GD_POINTER: code += BTN_MOUSE; break;
771 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
772 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
773 default: code += BTN_MISC;
774 }
775 }
776
777 map_key(code);
778 break;
779
780 case HID_UP_SIMULATION:
781 switch (usage->hid & 0xffff) {
782 case 0xba: map_abs(ABS_RUDDER); break;
783 case 0xbb: map_abs(ABS_THROTTLE); break;
784 case 0xc4: map_abs(ABS_GAS); break;
785 case 0xc5: map_abs(ABS_BRAKE); break;
786 case 0xc8: map_abs(ABS_WHEEL); break;
787 default: goto ignore;
788 }
789 break;
790
791 case HID_UP_GENDESK:
792 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
793 switch (usage->hid & 0xf) {
794 case 0x1: map_key_clear(KEY_POWER); break;
795 case 0x2: map_key_clear(KEY_SLEEP); break;
796 case 0x3: map_key_clear(KEY_WAKEUP); break;
797 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
798 case 0x5: map_key_clear(KEY_MENU); break;
799 case 0x6: map_key_clear(KEY_PROG1); break;
800 case 0x7: map_key_clear(KEY_HELP); break;
801 case 0x8: map_key_clear(KEY_EXIT); break;
802 case 0x9: map_key_clear(KEY_SELECT); break;
803 case 0xa: map_key_clear(KEY_RIGHT); break;
804 case 0xb: map_key_clear(KEY_LEFT); break;
805 case 0xc: map_key_clear(KEY_UP); break;
806 case 0xd: map_key_clear(KEY_DOWN); break;
807 case 0xe: map_key_clear(KEY_POWER2); break;
808 case 0xf: map_key_clear(KEY_RESTART); break;
809 default: goto unknown;
810 }
811 break;
812 }
813
814 if ((usage->hid & 0xf0) == 0x90) { /* SystemControl & D-pad */
815 switch (usage->hid) {
816 case HID_GD_UP: usage->hat_dir = 1; break;
817 case HID_GD_DOWN: usage->hat_dir = 5; break;
818 case HID_GD_RIGHT: usage->hat_dir = 3; break;
819 case HID_GD_LEFT: usage->hat_dir = 7; break;
820 case HID_GD_DO_NOT_DISTURB:
821 map_key_clear(KEY_DO_NOT_DISTURB); break;
822 default: goto unknown;
823 }
824
825 if (usage->hid <= HID_GD_LEFT) {
826 if (field->dpad) {
827 map_abs(field->dpad);
828 goto ignore;
829 }
830 map_abs(ABS_HAT0X);
831 }
832 break;
833 }
834
835 if ((usage->hid & 0xf0) == 0xa0) { /* SystemControl */
836 switch (usage->hid & 0xf) {
837 case 0x9: map_key_clear(KEY_MICMUTE); break;
838 case 0xa: map_key_clear(KEY_ACCESSIBILITY); break;
839 default: goto ignore;
840 }
841 break;
842 }
843
844 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */
845 switch (usage->hid & 0xf) {
846 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break;
847 default: goto ignore;
848 }
849 break;
850 }
851
852 /*
853 * Some lazy vendors declare 255 usages for System Control,
854 * leading to the creation of ABS_X|Y axis and too many others.
855 * It wouldn't be a problem if joydev doesn't consider the
856 * device as a joystick then.
857 */
858 if (field->application == HID_GD_SYSTEM_CONTROL)
859 goto ignore;
860
861 switch (usage->hid) {
862 /* These usage IDs map directly to the usage codes. */
863 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
864 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
865 if (field->flags & HID_MAIN_ITEM_RELATIVE)
866 map_rel(usage->hid & 0xf);
867 else
868 map_abs_clear(usage->hid & 0xf);
869 break;
870
871 case HID_GD_WHEEL:
872 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
873 set_bit(REL_WHEEL, input->relbit);
874 map_rel(REL_WHEEL_HI_RES);
875 } else {
876 map_abs(usage->hid & 0xf);
877 }
878 break;
879 case HID_GD_SLIDER: case HID_GD_DIAL:
880 if (field->flags & HID_MAIN_ITEM_RELATIVE)
881 map_rel(usage->hid & 0xf);
882 else
883 map_abs(usage->hid & 0xf);
884 break;
885
886 case HID_GD_HATSWITCH:
887 usage->hat_min = field->logical_minimum;
888 usage->hat_max = field->logical_maximum;
889 map_abs(ABS_HAT0X);
890 break;
891
892 case HID_GD_START: map_key_clear(BTN_START); break;
893 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
894
895 case HID_GD_RFKILL_BTN:
896 /* MS wireless radio ctl extension, also check CA */
897 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
898 map_key_clear(KEY_RFKILL);
899 /* We need to simulate the btn release */
900 field->flags |= HID_MAIN_ITEM_RELATIVE;
901 break;
902 }
903 goto unknown;
904
905 default: goto unknown;
906 }
907
908 break;
909
910 case HID_UP_LED:
911 switch (usage->hid & 0xffff) { /* HID-Value: */
912 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
913 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
914 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
915 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
916 case 0x05: map_led (LED_KANA); break; /* "Kana" */
917 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
918 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
919 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
920 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
921 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
922 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
923
924 default: goto ignore;
925 }
926 break;
927
928 case HID_UP_DIGITIZER:
929 if ((field->application & 0xff) == 0x01) /* Digitizer */
930 __set_bit(INPUT_PROP_POINTER, input->propbit);
931 else if ((field->application & 0xff) == 0x02) /* Pen */
932 __set_bit(INPUT_PROP_DIRECT, input->propbit);
933
934 switch (usage->hid & 0xff) {
935 case 0x00: /* Undefined */
936 goto ignore;
937
938 case 0x30: /* TipPressure */
939 if (!test_bit(BTN_TOUCH, input->keybit)) {
940 device->quirks |= HID_QUIRK_NOTOUCH;
941 set_bit(EV_KEY, input->evbit);
942 set_bit(BTN_TOUCH, input->keybit);
943 }
944 map_abs_clear(ABS_PRESSURE);
945 break;
946
947 case 0x32: /* InRange */
948 switch (field->physical) {
949 case HID_DG_PUCK:
950 map_key(BTN_TOOL_MOUSE);
951 break;
952 case HID_DG_FINGER:
953 map_key(BTN_TOOL_FINGER);
954 break;
955 default:
956 /*
957 * If the physical is not given,
958 * rely on the application.
959 */
960 if (!field->physical) {
961 switch (field->application) {
962 case HID_DG_TOUCHSCREEN:
963 case HID_DG_TOUCHPAD:
964 map_key_clear(BTN_TOOL_FINGER);
965 break;
966 default:
967 map_key_clear(BTN_TOOL_PEN);
968 }
969 } else {
970 map_key(BTN_TOOL_PEN);
971 }
972 break;
973 }
974 break;
975
976 case 0x3b: /* Battery Strength */
977 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false);
978 usage->type = EV_PWR;
979 return;
980
981 case 0x3c: /* Invert */
982 device->quirks &= ~HID_QUIRK_NOINVERT;
983 map_key_clear(BTN_TOOL_RUBBER);
984 break;
985
986 case 0x3d: /* X Tilt */
987 map_abs_clear(ABS_TILT_X);
988 break;
989
990 case 0x3e: /* Y Tilt */
991 map_abs_clear(ABS_TILT_Y);
992 break;
993
994 case 0x33: /* Touch */
995 case 0x42: /* TipSwitch */
996 case 0x43: /* TipSwitch2 */
997 device->quirks &= ~HID_QUIRK_NOTOUCH;
998 map_key_clear(BTN_TOUCH);
999 break;
1000
1001 case 0x44: /* BarrelSwitch */
1002 map_key_clear(BTN_STYLUS);
1003 break;
1004
1005 case 0x45: /* ERASER */
1006 /*
1007 * This event is reported when eraser tip touches the surface.
1008 * Actual eraser (BTN_TOOL_RUBBER) is set and released either
1009 * by Invert if tool reports proximity or by Eraser directly.
1010 */
1011 if (!test_bit(BTN_TOOL_RUBBER, input->keybit)) {
1012 device->quirks |= HID_QUIRK_NOINVERT;
1013 set_bit(BTN_TOOL_RUBBER, input->keybit);
1014 }
1015 map_key_clear(BTN_TOUCH);
1016 break;
1017
1018 case 0x46: /* TabletPick */
1019 case 0x5a: /* SecondaryBarrelSwitch */
1020 map_key_clear(BTN_STYLUS2);
1021 break;
1022
1023 case 0x5b: /* TransducerSerialNumber */
1024 case 0x6e: /* TransducerSerialNumber2 */
1025 map_msc(MSC_SERIAL);
1026 break;
1027
1028 default: goto unknown;
1029 }
1030 break;
1031
1032 case HID_UP_TELEPHONY:
1033 switch (usage->hid & HID_USAGE) {
1034 case 0x2f: map_key_clear(KEY_MICMUTE); break;
1035 case 0xb0: map_key_clear(KEY_NUMERIC_0); break;
1036 case 0xb1: map_key_clear(KEY_NUMERIC_1); break;
1037 case 0xb2: map_key_clear(KEY_NUMERIC_2); break;
1038 case 0xb3: map_key_clear(KEY_NUMERIC_3); break;
1039 case 0xb4: map_key_clear(KEY_NUMERIC_4); break;
1040 case 0xb5: map_key_clear(KEY_NUMERIC_5); break;
1041 case 0xb6: map_key_clear(KEY_NUMERIC_6); break;
1042 case 0xb7: map_key_clear(KEY_NUMERIC_7); break;
1043 case 0xb8: map_key_clear(KEY_NUMERIC_8); break;
1044 case 0xb9: map_key_clear(KEY_NUMERIC_9); break;
1045 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;
1046 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;
1047 case 0xbc: map_key_clear(KEY_NUMERIC_A); break;
1048 case 0xbd: map_key_clear(KEY_NUMERIC_B); break;
1049 case 0xbe: map_key_clear(KEY_NUMERIC_C); break;
1050 case 0xbf: map_key_clear(KEY_NUMERIC_D); break;
1051 default: goto ignore;
1052 }
1053 break;
1054
1055 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
1056 switch (usage->hid & HID_USAGE) {
1057 case 0x000: goto ignore;
1058 case 0x030: map_key_clear(KEY_POWER); break;
1059 case 0x031: map_key_clear(KEY_RESTART); break;
1060 case 0x032: map_key_clear(KEY_SLEEP); break;
1061 case 0x034: map_key_clear(KEY_SLEEP); break;
1062 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
1063 case 0x036: map_key_clear(BTN_MISC); break;
1064
1065 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
1066 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
1067 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
1068 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
1069 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
1070 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
1071 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
1072 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
1073 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
1074
1075 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
1076 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
1077 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
1078 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
1079 case 0x069: map_key_clear(KEY_RED); break;
1080 case 0x06a: map_key_clear(KEY_GREEN); break;
1081 case 0x06b: map_key_clear(KEY_BLUE); break;
1082 case 0x06c: map_key_clear(KEY_YELLOW); break;
1083 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break;
1084
1085 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
1086 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1087 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
1088 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
1089 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
1090 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
1091
1092 case 0x076: map_key_clear(KEY_CAMERA_ACCESS_ENABLE); break;
1093 case 0x077: map_key_clear(KEY_CAMERA_ACCESS_DISABLE); break;
1094 case 0x078: map_key_clear(KEY_CAMERA_ACCESS_TOGGLE); break;
1095
1096 case 0x079: map_key_clear(KEY_KBDILLUMUP); break;
1097 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break;
1098 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break;
1099
1100 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
1101 case 0x083: map_key_clear(KEY_LAST); break;
1102 case 0x084: map_key_clear(KEY_ENTER); break;
1103 case 0x088: map_key_clear(KEY_PC); break;
1104 case 0x089: map_key_clear(KEY_TV); break;
1105 case 0x08a: map_key_clear(KEY_WWW); break;
1106 case 0x08b: map_key_clear(KEY_DVD); break;
1107 case 0x08c: map_key_clear(KEY_PHONE); break;
1108 case 0x08d: map_key_clear(KEY_PROGRAM); break;
1109 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
1110 case 0x08f: map_key_clear(KEY_GAMES); break;
1111 case 0x090: map_key_clear(KEY_MEMO); break;
1112 case 0x091: map_key_clear(KEY_CD); break;
1113 case 0x092: map_key_clear(KEY_VCR); break;
1114 case 0x093: map_key_clear(KEY_TUNER); break;
1115 case 0x094: map_key_clear(KEY_EXIT); break;
1116 case 0x095: map_key_clear(KEY_HELP); break;
1117 case 0x096: map_key_clear(KEY_TAPE); break;
1118 case 0x097: map_key_clear(KEY_TV2); break;
1119 case 0x098: map_key_clear(KEY_SAT); break;
1120 case 0x09a: map_key_clear(KEY_PVR); break;
1121
1122 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
1123 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
1124 case 0x0a0: map_key_clear(KEY_VCR2); break;
1125
1126 case 0x0b0: map_key_clear(KEY_PLAY); break;
1127 case 0x0b1: map_key_clear(KEY_PAUSE); break;
1128 case 0x0b2: map_key_clear(KEY_RECORD); break;
1129 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
1130 case 0x0b4: map_key_clear(KEY_REWIND); break;
1131 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
1132 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
1133 case 0x0b7: map_key_clear(KEY_STOPCD); break;
1134 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
1135 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
1136 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
1137 case 0x0bf: map_key_clear(KEY_SLOW); break;
1138
1139 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
1140 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
1141
1142 case 0x0d8: map_key_clear(KEY_DICTATE); break;
1143 case 0x0d9: map_key_clear(KEY_EMOJI_PICKER); break;
1144
1145 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
1146 case 0x0e2: map_key_clear(KEY_MUTE); break;
1147 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
1148 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
1149 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
1150 case 0x0f5: map_key_clear(KEY_SLOW); break;
1151
1152 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
1153 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
1154 case 0x183: map_key_clear(KEY_CONFIG); break;
1155 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
1156 case 0x185: map_key_clear(KEY_EDITOR); break;
1157 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
1158 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
1159 case 0x188: map_key_clear(KEY_PRESENTATION); break;
1160 case 0x189: map_key_clear(KEY_DATABASE); break;
1161 case 0x18a: map_key_clear(KEY_MAIL); break;
1162 case 0x18b: map_key_clear(KEY_NEWS); break;
1163 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
1164 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
1165 case 0x18e: map_key_clear(KEY_CALENDAR); break;
1166 case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
1167 case 0x190: map_key_clear(KEY_JOURNAL); break;
1168 case 0x191: map_key_clear(KEY_FINANCE); break;
1169 case 0x192: map_key_clear(KEY_CALC); break;
1170 case 0x193: map_key_clear(KEY_PLAYER); break;
1171 case 0x194: map_key_clear(KEY_FILE); break;
1172 case 0x196: map_key_clear(KEY_WWW); break;
1173 case 0x199: map_key_clear(KEY_CHAT); break;
1174 case 0x19c: map_key_clear(KEY_LOGOFF); break;
1175 case 0x19e: map_key_clear(KEY_COFFEE); break;
1176 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
1177 case 0x1a2: map_key_clear(KEY_APPSELECT); break;
1178 case 0x1a3: map_key_clear(KEY_NEXT); break;
1179 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
1180 case 0x1a6: map_key_clear(KEY_HELP); break;
1181 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
1182 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
1183 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
1184 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
1185 case 0x1b4: map_key_clear(KEY_FILE); break;
1186 case 0x1b6: map_key_clear(KEY_IMAGES); break;
1187 case 0x1b7: map_key_clear(KEY_AUDIO); break;
1188 case 0x1b8: map_key_clear(KEY_VIDEO); break;
1189 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
1190 case 0x1bd: map_key_clear(KEY_INFO); break;
1191 case 0x1cb: map_key_clear(KEY_ASSISTANT); break;
1192 case 0x201: map_key_clear(KEY_NEW); break;
1193 case 0x202: map_key_clear(KEY_OPEN); break;
1194 case 0x203: map_key_clear(KEY_CLOSE); break;
1195 case 0x204: map_key_clear(KEY_EXIT); break;
1196 case 0x207: map_key_clear(KEY_SAVE); break;
1197 case 0x208: map_key_clear(KEY_PRINT); break;
1198 case 0x209: map_key_clear(KEY_PROPS); break;
1199 case 0x21a: map_key_clear(KEY_UNDO); break;
1200 case 0x21b: map_key_clear(KEY_COPY); break;
1201 case 0x21c: map_key_clear(KEY_CUT); break;
1202 case 0x21d: map_key_clear(KEY_PASTE); break;
1203 case 0x21f: map_key_clear(KEY_FIND); break;
1204 case 0x221: map_key_clear(KEY_SEARCH); break;
1205 case 0x222: map_key_clear(KEY_GOTO); break;
1206 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
1207 case 0x224: map_key_clear(KEY_BACK); break;
1208 case 0x225: map_key_clear(KEY_FORWARD); break;
1209 case 0x226: map_key_clear(KEY_STOP); break;
1210 case 0x227: map_key_clear(KEY_REFRESH); break;
1211 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
1212 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
1213 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
1214 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
1215 case 0x232: map_key_clear(KEY_FULL_SCREEN); break;
1216 case 0x233: map_key_clear(KEY_SCROLLUP); break;
1217 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
1218 case 0x238: /* AC Pan */
1219 set_bit(REL_HWHEEL, input->relbit);
1220 map_rel(REL_HWHEEL_HI_RES);
1221 break;
1222 case 0x23d: map_key_clear(KEY_EDIT); break;
1223 case 0x25f: map_key_clear(KEY_CANCEL); break;
1224 case 0x269: map_key_clear(KEY_INSERT); break;
1225 case 0x26a: map_key_clear(KEY_DELETE); break;
1226 case 0x279: map_key_clear(KEY_REDO); break;
1227
1228 case 0x289: map_key_clear(KEY_REPLY); break;
1229 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
1230 case 0x28c: map_key_clear(KEY_SEND); break;
1231
1232 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break;
1233
1234 case 0x2a2: map_key_clear(KEY_ALL_APPLICATIONS); break;
1235
1236 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
1237 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
1238 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
1239 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
1240 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
1241 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
1242
1243 case 0x29f: map_key_clear(KEY_SCALE); break;
1244
1245 default: map_key_clear(KEY_UNKNOWN);
1246 }
1247 break;
1248
1249 case HID_UP_GENDEVCTRLS:
1250 switch (usage->hid) {
1251 case HID_DC_BATTERYSTRENGTH:
1252 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false);
1253 usage->type = EV_PWR;
1254 return;
1255 }
1256 goto unknown;
1257
1258 case HID_UP_BATTERY:
1259 switch (usage->hid) {
1260 case HID_BAT_ABSOLUTESTATEOFCHARGE:
1261 hidinput_setup_battery(device, HID_INPUT_REPORT, field, true);
1262 usage->type = EV_PWR;
1263 return;
1264 case HID_BAT_CHARGING:
1265 usage->type = EV_PWR;
1266 return;
1267 }
1268 goto unknown;
1269 case HID_UP_CAMERA:
1270 switch (usage->hid & HID_USAGE) {
1271 case 0x020:
1272 map_key_clear(KEY_CAMERA_FOCUS); break;
1273 case 0x021:
1274 map_key_clear(KEY_CAMERA); break;
1275 default:
1276 goto ignore;
1277 }
1278 break;
1279
1280 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
1281 set_bit(EV_REP, input->evbit);
1282 switch (usage->hid & HID_USAGE) {
1283 case 0x021: map_key_clear(KEY_PRINT); break;
1284 case 0x070: map_key_clear(KEY_HP); break;
1285 case 0x071: map_key_clear(KEY_CAMERA); break;
1286 case 0x072: map_key_clear(KEY_SOUND); break;
1287 case 0x073: map_key_clear(KEY_QUESTION); break;
1288 case 0x080: map_key_clear(KEY_EMAIL); break;
1289 case 0x081: map_key_clear(KEY_CHAT); break;
1290 case 0x082: map_key_clear(KEY_SEARCH); break;
1291 case 0x083: map_key_clear(KEY_CONNECT); break;
1292 case 0x084: map_key_clear(KEY_FINANCE); break;
1293 case 0x085: map_key_clear(KEY_SPORT); break;
1294 case 0x086: map_key_clear(KEY_SHOP); break;
1295 default: goto ignore;
1296 }
1297 break;
1298
1299 case HID_UP_HPVENDOR2:
1300 set_bit(EV_REP, input->evbit);
1301 switch (usage->hid & HID_USAGE) {
1302 case 0x001: map_key_clear(KEY_MICMUTE); break;
1303 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1304 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
1305 default: goto ignore;
1306 }
1307 break;
1308
1309 case HID_UP_MSVENDOR:
1310 goto ignore;
1311
1312 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
1313 set_bit(EV_REP, input->evbit);
1314 goto ignore;
1315
1316 case HID_UP_LOGIVENDOR:
1317 /* intentional fallback */
1318 case HID_UP_LOGIVENDOR2:
1319 /* intentional fallback */
1320 case HID_UP_LOGIVENDOR3:
1321 goto ignore;
1322
1323 case HID_UP_PID:
1324 switch (usage->hid & HID_USAGE) {
1325 case 0xa4: map_key_clear(BTN_DEAD); break;
1326 default: goto ignore;
1327 }
1328 break;
1329
1330 default:
1331 unknown:
1332 if (field->report_size == 1) {
1333 if (field->report->type == HID_OUTPUT_REPORT) {
1334 map_led(LED_MISC);
1335 break;
1336 }
1337 map_key(BTN_MISC);
1338 break;
1339 }
1340 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
1341 map_rel(REL_MISC);
1342 break;
1343 }
1344 map_abs(ABS_MISC);
1345 break;
1346 }
1347
1348 mapped:
1349 /* Mapping failed, bail out */
1350 if (!bit)
1351 return;
1352
1353 if (device->driver->input_mapped &&
1354 device->driver->input_mapped(device, hidinput, field, usage,
1355 &bit, &max) < 0) {
1356 /*
1357 * The driver indicated that no further generic handling
1358 * of the usage is desired.
1359 */
1360 return;
1361 }
1362
1363 set_bit(usage->type, input->evbit);
1364
1365 /*
1366 * This part is *really* controversial:
1367 * - HID aims at being generic so we should do our best to export
1368 * all incoming events
1369 * - HID describes what events are, so there is no reason for ABS_X
1370 * to be mapped to ABS_Y
1371 * - HID is using *_MISC+N as a default value, but nothing prevents
1372 * *_MISC+N to overwrite a legitimate even, which confuses userspace
1373 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different
1374 * processing)
1375 *
1376 * If devices still want to use this (at their own risk), they will
1377 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but
1378 * the default should be a reliable mapping.
1379 */
1380 while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
1381 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {
1382 usage->code = find_next_zero_bit(bit,
1383 max + 1,
1384 usage->code);
1385 } else {
1386 device->status |= HID_STAT_DUP_DETECTED;
1387 goto ignore;
1388 }
1389 }
1390
1391 if (usage->code > max)
1392 goto ignore;
1393
1394 if (usage->type == EV_ABS) {
1395
1396 int a = field->logical_minimum;
1397 int b = field->logical_maximum;
1398
1399 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1400 a = field->logical_minimum = 0;
1401 b = field->logical_maximum = 255;
1402 }
1403
1404 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1405 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
1406 else input_set_abs_params(input, usage->code, a, b, 0, 0);
1407
1408 input_abs_set_res(input, usage->code,
1409 hidinput_calc_abs_res(field, usage->code));
1410
1411 /* use a larger default input buffer for MT devices */
1412 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1413 input_set_events_per_packet(input, 60);
1414 }
1415
1416 if (usage->type == EV_ABS &&
1417 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
1418 int i;
1419 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1420 input_set_abs_params(input, i, -1, 1, 0, 0);
1421 set_bit(i, input->absbit);
1422 }
1423 if (usage->hat_dir && !field->dpad)
1424 field->dpad = usage->code;
1425 }
1426
1427 /* for those devices which produce Consumer volume usage as relative,
1428 * we emulate pressing volumeup/volumedown appropriate number of times
1429 * in hidinput_hid_event()
1430 */
1431 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1432 (usage->code == ABS_VOLUME)) {
1433 set_bit(KEY_VOLUMEUP, input->keybit);
1434 set_bit(KEY_VOLUMEDOWN, input->keybit);
1435 }
1436
1437 if (usage->type == EV_KEY) {
1438 set_bit(EV_MSC, input->evbit);
1439 set_bit(MSC_SCAN, input->mscbit);
1440 }
1441
1442 return;
1443
1444 ignore:
1445 usage->type = 0;
1446 usage->code = 0;
1447 }
1448
hidinput_handle_scroll(struct hid_usage * usage,struct input_dev * input,__s32 value)1449 static void hidinput_handle_scroll(struct hid_usage *usage,
1450 struct input_dev *input,
1451 __s32 value)
1452 {
1453 int code;
1454 int hi_res, lo_res;
1455
1456 if (value == 0)
1457 return;
1458
1459 if (usage->code == REL_WHEEL_HI_RES)
1460 code = REL_WHEEL;
1461 else
1462 code = REL_HWHEEL;
1463
1464 /*
1465 * Windows reports one wheel click as value 120. Where a high-res
1466 * scroll wheel is present, a fraction of 120 is reported instead.
1467 * Our REL_WHEEL_HI_RES axis does the same because all HW must
1468 * adhere to the 120 expectation.
1469 */
1470 hi_res = value * 120/usage->resolution_multiplier;
1471
1472 usage->wheel_accumulated += hi_res;
1473 lo_res = usage->wheel_accumulated/120;
1474 if (lo_res)
1475 usage->wheel_accumulated -= lo_res * 120;
1476
1477 input_event(input, EV_REL, code, lo_res);
1478 input_event(input, EV_REL, usage->code, hi_res);
1479 }
1480
hid_report_release_tool(struct hid_report * report,struct input_dev * input,unsigned int tool)1481 static void hid_report_release_tool(struct hid_report *report, struct input_dev *input,
1482 unsigned int tool)
1483 {
1484 /* if the given tool is not currently reported, ignore */
1485 if (!test_bit(tool, input->key))
1486 return;
1487
1488 /*
1489 * if the given tool was previously set, release it,
1490 * release any TOUCH and send an EV_SYN
1491 */
1492 input_event(input, EV_KEY, BTN_TOUCH, 0);
1493 input_event(input, EV_KEY, tool, 0);
1494 input_event(input, EV_SYN, SYN_REPORT, 0);
1495
1496 report->tool = 0;
1497 }
1498
hid_report_set_tool(struct hid_report * report,struct input_dev * input,unsigned int new_tool)1499 static void hid_report_set_tool(struct hid_report *report, struct input_dev *input,
1500 unsigned int new_tool)
1501 {
1502 if (report->tool != new_tool)
1503 hid_report_release_tool(report, input, report->tool);
1504
1505 input_event(input, EV_KEY, new_tool, 1);
1506 report->tool = new_tool;
1507 }
1508
hidinput_hid_event(struct hid_device * hid,struct hid_field * field,struct hid_usage * usage,__s32 value)1509 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1510 {
1511 struct input_dev *input;
1512 struct hid_report *report = field->report;
1513 unsigned *quirks = &hid->quirks;
1514
1515 if (!usage->type)
1516 return;
1517
1518 if (usage->type == EV_PWR) {
1519 hidinput_update_battery(hid, usage->hid, value);
1520 return;
1521 }
1522
1523 if (!field->hidinput)
1524 return;
1525
1526 input = field->hidinput->input;
1527
1528 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1529 int hat_dir = usage->hat_dir;
1530 if (!hat_dir)
1531 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1532 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1533 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
1534 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1535 return;
1536 }
1537
1538 /*
1539 * Ignore out-of-range values as per HID specification,
1540 * section 5.10 and 6.2.25, when NULL state bit is present.
1541 * When it's not, clamp the value to match Microsoft's input
1542 * driver as mentioned in "Required HID usages for digitizers":
1543 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
1544 *
1545 * The logical_minimum < logical_maximum check is done so that we
1546 * don't unintentionally discard values sent by devices which
1547 * don't specify logical min and max.
1548 */
1549 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1550 field->logical_minimum < field->logical_maximum) {
1551 if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
1552 (value < field->logical_minimum ||
1553 value > field->logical_maximum)) {
1554 dbg_hid("Ignoring out-of-range value %x\n", value);
1555 return;
1556 }
1557 value = clamp(value,
1558 field->logical_minimum,
1559 field->logical_maximum);
1560 }
1561
1562 switch (usage->hid) {
1563 case HID_DG_ERASER:
1564 report->tool_active |= !!value;
1565
1566 /*
1567 * if eraser is set, we must enforce BTN_TOOL_RUBBER
1568 * to accommodate for devices not following the spec.
1569 */
1570 if (value)
1571 hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1572 else if (report->tool != BTN_TOOL_RUBBER)
1573 /* value is off, tool is not rubber, ignore */
1574 return;
1575 else if (*quirks & HID_QUIRK_NOINVERT &&
1576 !test_bit(BTN_TOUCH, input->key)) {
1577 /*
1578 * There is no invert to release the tool, let hid_input
1579 * send BTN_TOUCH with scancode and release the tool after.
1580 */
1581 hid_report_release_tool(report, input, BTN_TOOL_RUBBER);
1582 return;
1583 }
1584
1585 /* let hid-input set BTN_TOUCH */
1586 break;
1587
1588 case HID_DG_INVERT:
1589 report->tool_active |= !!value;
1590
1591 /*
1592 * If invert is set, we store BTN_TOOL_RUBBER.
1593 */
1594 if (value)
1595 hid_report_set_tool(report, input, BTN_TOOL_RUBBER);
1596 else if (!report->tool_active)
1597 /* tool_active not set means Invert and Eraser are not set */
1598 hid_report_release_tool(report, input, BTN_TOOL_RUBBER);
1599
1600 /* no further processing */
1601 return;
1602
1603 case HID_DG_INRANGE:
1604 report->tool_active |= !!value;
1605
1606 if (report->tool_active) {
1607 /*
1608 * if tool is not set but is marked as active,
1609 * assume ours
1610 */
1611 if (!report->tool)
1612 report->tool = usage->code;
1613
1614 /* drivers may have changed the value behind our back, resend it */
1615 hid_report_set_tool(report, input, report->tool);
1616 } else {
1617 hid_report_release_tool(report, input, usage->code);
1618 }
1619
1620 /* reset tool_active for the next event */
1621 report->tool_active = false;
1622
1623 /* no further processing */
1624 return;
1625
1626 case HID_DG_TIPSWITCH:
1627 report->tool_active |= !!value;
1628
1629 /* if tool is set to RUBBER we should ignore the current value */
1630 if (report->tool == BTN_TOOL_RUBBER)
1631 return;
1632
1633 break;
1634
1635 case HID_DG_TIPPRESSURE:
1636 if (*quirks & HID_QUIRK_NOTOUCH) {
1637 int a = field->logical_minimum;
1638 int b = field->logical_maximum;
1639
1640 if (value > a + ((b - a) >> 3)) {
1641 input_event(input, EV_KEY, BTN_TOUCH, 1);
1642 report->tool_active = true;
1643 }
1644 }
1645 break;
1646
1647 case HID_UP_PID | 0x83UL: /* Simultaneous Effects Max */
1648 dbg_hid("Maximum Effects - %d\n",value);
1649 return;
1650
1651 case HID_UP_PID | 0x7fUL:
1652 dbg_hid("PID Pool Report\n");
1653 return;
1654 }
1655
1656 switch (usage->type) {
1657 case EV_KEY:
1658 if (usage->code == 0) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1659 return;
1660 break;
1661
1662 case EV_REL:
1663 if (usage->code == REL_WHEEL_HI_RES ||
1664 usage->code == REL_HWHEEL_HI_RES) {
1665 hidinput_handle_scroll(usage, input, value);
1666 return;
1667 }
1668 break;
1669
1670 case EV_ABS:
1671 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1672 usage->code == ABS_VOLUME) {
1673 int count = abs(value);
1674 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1675 int i;
1676
1677 for (i = 0; i < count; i++) {
1678 input_event(input, EV_KEY, direction, 1);
1679 input_sync(input);
1680 input_event(input, EV_KEY, direction, 0);
1681 input_sync(input);
1682 }
1683 return;
1684
1685 } else if (((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) ||
1686 ((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y))
1687 value = field->logical_maximum - value;
1688 break;
1689 }
1690
1691 /*
1692 * Ignore reports for absolute data if the data didn't change. This is
1693 * not only an optimization but also fixes 'dead' key reports. Some
1694 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1695 * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1696 * can only have one of them physically available. The 'dead' keys
1697 * report constant 0. As all map to the same keycode, they'd confuse
1698 * the input layer. If we filter the 'dead' keys on the HID level, we
1699 * skip the keycode translation and only forward real events.
1700 */
1701 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1702 HID_MAIN_ITEM_BUFFERED_BYTE)) &&
1703 (field->flags & HID_MAIN_ITEM_VARIABLE) &&
1704 usage->usage_index < field->maxusage &&
1705 value == field->value[usage->usage_index])
1706 return;
1707
1708 /* report the usage code as scancode if the key status has changed */
1709 if (usage->type == EV_KEY &&
1710 (!test_bit(usage->code, input->key)) == value)
1711 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1712
1713 input_event(input, usage->type, usage->code, value);
1714
1715 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1716 usage->type == EV_KEY && value) {
1717 input_sync(input);
1718 input_event(input, usage->type, usage->code, 0);
1719 }
1720 }
1721
hidinput_report_event(struct hid_device * hid,struct hid_report * report)1722 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1723 {
1724 struct hid_input *hidinput;
1725
1726 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1727 return;
1728
1729 list_for_each_entry(hidinput, &hid->inputs, list)
1730 input_sync(hidinput->input);
1731 }
1732 EXPORT_SYMBOL_GPL(hidinput_report_event);
1733
hidinput_find_field(struct hid_device * hid,unsigned int type,unsigned int code,struct hid_field ** field)1734 static int hidinput_find_field(struct hid_device *hid, unsigned int type,
1735 unsigned int code, struct hid_field **field)
1736 {
1737 struct hid_report *report;
1738 int i, j;
1739
1740 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1741 for (i = 0; i < report->maxfield; i++) {
1742 *field = report->field[i];
1743 for (j = 0; j < (*field)->maxusage; j++)
1744 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1745 return j;
1746 }
1747 }
1748 return -1;
1749 }
1750
hidinput_get_led_field(struct hid_device * hid)1751 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1752 {
1753 struct hid_report *report;
1754 struct hid_field *field;
1755 int i, j;
1756
1757 list_for_each_entry(report,
1758 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1759 list) {
1760 for (i = 0; i < report->maxfield; i++) {
1761 field = report->field[i];
1762 for (j = 0; j < field->maxusage; j++)
1763 if (field->usage[j].type == EV_LED)
1764 return field;
1765 }
1766 }
1767 return NULL;
1768 }
1769 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1770
hidinput_count_leds(struct hid_device * hid)1771 unsigned int hidinput_count_leds(struct hid_device *hid)
1772 {
1773 struct hid_report *report;
1774 struct hid_field *field;
1775 int i, j;
1776 unsigned int count = 0;
1777
1778 list_for_each_entry(report,
1779 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1780 list) {
1781 for (i = 0; i < report->maxfield; i++) {
1782 field = report->field[i];
1783 for (j = 0; j < field->maxusage; j++)
1784 if (field->usage[j].type == EV_LED &&
1785 field->value[j])
1786 count += 1;
1787 }
1788 }
1789 return count;
1790 }
1791 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1792
hidinput_led_worker(struct work_struct * work)1793 static void hidinput_led_worker(struct work_struct *work)
1794 {
1795 struct hid_device *hid = container_of(work, struct hid_device,
1796 led_work);
1797 struct hid_field *field;
1798 struct hid_report *report;
1799 int ret;
1800 u32 len;
1801 __u8 *buf;
1802
1803 field = hidinput_get_led_field(hid);
1804 if (!field)
1805 return;
1806
1807 /*
1808 * field->report is accessed unlocked regarding HID core. So there might
1809 * be another incoming SET-LED request from user-space, which changes
1810 * the LED state while we assemble our outgoing buffer. However, this
1811 * doesn't matter as hid_output_report() correctly converts it into a
1812 * boolean value no matter what information is currently set on the LED
1813 * field (even garbage). So the remote device will always get a valid
1814 * request.
1815 * And in case we send a wrong value, a next led worker is spawned
1816 * for every SET-LED request so the following worker will send the
1817 * correct value, guaranteed!
1818 */
1819
1820 report = field->report;
1821
1822 /* use custom SET_REPORT request if possible (asynchronous) */
1823 if (hid->ll_driver->request)
1824 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1825
1826 /* fall back to generic raw-output-report */
1827 len = hid_report_len(report);
1828 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1829 if (!buf)
1830 return;
1831
1832 hid_output_report(report, buf);
1833 /* synchronous output report */
1834 ret = hid_hw_output_report(hid, buf, len);
1835 if (ret == -ENOSYS)
1836 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1837 HID_REQ_SET_REPORT);
1838 kfree(buf);
1839 }
1840
hidinput_input_event(struct input_dev * dev,unsigned int type,unsigned int code,int value)1841 static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1842 unsigned int code, int value)
1843 {
1844 struct hid_device *hid = input_get_drvdata(dev);
1845 struct hid_field *field;
1846 int offset;
1847
1848 if (type == EV_FF)
1849 return input_ff_event(dev, type, code, value);
1850
1851 if (type != EV_LED)
1852 return -1;
1853
1854 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1855 hid_warn(dev, "event field not found\n");
1856 return -1;
1857 }
1858
1859 hid_set_field(field, offset, value);
1860
1861 schedule_work(&hid->led_work);
1862 return 0;
1863 }
1864
hidinput_open(struct input_dev * dev)1865 static int hidinput_open(struct input_dev *dev)
1866 {
1867 struct hid_device *hid = input_get_drvdata(dev);
1868
1869 return hid_hw_open(hid);
1870 }
1871
hidinput_close(struct input_dev * dev)1872 static void hidinput_close(struct input_dev *dev)
1873 {
1874 struct hid_device *hid = input_get_drvdata(dev);
1875
1876 hid_hw_close(hid);
1877 }
1878
__hidinput_change_resolution_multipliers(struct hid_device * hid,struct hid_report * report,bool use_logical_max)1879 static bool __hidinput_change_resolution_multipliers(struct hid_device *hid,
1880 struct hid_report *report, bool use_logical_max)
1881 {
1882 struct hid_usage *usage;
1883 bool update_needed = false;
1884 bool get_report_completed = false;
1885 int i, j;
1886
1887 if (report->maxfield == 0)
1888 return false;
1889
1890 for (i = 0; i < report->maxfield; i++) {
1891 __s32 value = use_logical_max ?
1892 report->field[i]->logical_maximum :
1893 report->field[i]->logical_minimum;
1894
1895 /* There is no good reason for a Resolution
1896 * Multiplier to have a count other than 1.
1897 * Ignore that case.
1898 */
1899 if (report->field[i]->report_count != 1)
1900 continue;
1901
1902 for (j = 0; j < report->field[i]->maxusage; j++) {
1903 usage = &report->field[i]->usage[j];
1904
1905 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER)
1906 continue;
1907
1908 /*
1909 * If we have more than one feature within this
1910 * report we need to fill in the bits from the
1911 * others before we can overwrite the ones for the
1912 * Resolution Multiplier.
1913 *
1914 * But if we're not allowed to read from the device,
1915 * we just bail. Such a device should not exist
1916 * anyway.
1917 */
1918 if (!get_report_completed && report->maxfield > 1) {
1919 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS)
1920 return update_needed;
1921
1922 hid_hw_request(hid, report, HID_REQ_GET_REPORT);
1923 hid_hw_wait(hid);
1924 get_report_completed = true;
1925 }
1926
1927 report->field[i]->value[j] = value;
1928 update_needed = true;
1929 }
1930 }
1931
1932 return update_needed;
1933 }
1934
hidinput_change_resolution_multipliers(struct hid_device * hid)1935 static void hidinput_change_resolution_multipliers(struct hid_device *hid)
1936 {
1937 struct hid_report_enum *rep_enum;
1938 struct hid_report *rep;
1939 int ret;
1940
1941 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1942 list_for_each_entry(rep, &rep_enum->report_list, list) {
1943 bool update_needed = __hidinput_change_resolution_multipliers(hid,
1944 rep, true);
1945
1946 if (update_needed) {
1947 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT);
1948 if (ret) {
1949 __hidinput_change_resolution_multipliers(hid,
1950 rep, false);
1951 return;
1952 }
1953 }
1954 }
1955
1956 /* refresh our structs */
1957 hid_setup_resolution_multiplier(hid);
1958 }
1959
report_features(struct hid_device * hid)1960 static void report_features(struct hid_device *hid)
1961 {
1962 struct hid_driver *drv = hid->driver;
1963 struct hid_report_enum *rep_enum;
1964 struct hid_report *rep;
1965 struct hid_usage *usage;
1966 int i, j;
1967
1968 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1969 list_for_each_entry(rep, &rep_enum->report_list, list)
1970 for (i = 0; i < rep->maxfield; i++) {
1971 /* Ignore if report count is out of bounds. */
1972 if (rep->field[i]->report_count < 1)
1973 continue;
1974
1975 for (j = 0; j < rep->field[i]->maxusage; j++) {
1976 usage = &rep->field[i]->usage[j];
1977
1978 /* Verify if Battery Strength feature is available */
1979 if (usage->hid == HID_DC_BATTERYSTRENGTH)
1980 hidinput_setup_battery(hid, HID_FEATURE_REPORT,
1981 rep->field[i], false);
1982
1983 if (drv->feature_mapping)
1984 drv->feature_mapping(hid, rep->field[i], usage);
1985 }
1986 }
1987 }
1988
hidinput_allocate(struct hid_device * hid,unsigned int application)1989 static struct hid_input *hidinput_allocate(struct hid_device *hid,
1990 unsigned int application)
1991 {
1992 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1993 struct input_dev *input_dev = input_allocate_device();
1994 const char *suffix = NULL;
1995 size_t suffix_len, name_len;
1996
1997 if (!hidinput || !input_dev)
1998 goto fail;
1999
2000 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&
2001 hid->maxapplication > 1) {
2002 switch (application) {
2003 case HID_GD_KEYBOARD:
2004 suffix = "Keyboard";
2005 break;
2006 case HID_GD_KEYPAD:
2007 suffix = "Keypad";
2008 break;
2009 case HID_GD_MOUSE:
2010 suffix = "Mouse";
2011 break;
2012 case HID_DG_PEN:
2013 /*
2014 * yes, there is an issue here:
2015 * DG_PEN -> "Stylus"
2016 * DG_STYLUS -> "Pen"
2017 * But changing this now means users with config snippets
2018 * will have to change it and the test suite will not be happy.
2019 */
2020 suffix = "Stylus";
2021 break;
2022 case HID_DG_STYLUS:
2023 suffix = "Pen";
2024 break;
2025 case HID_DG_TOUCHSCREEN:
2026 suffix = "Touchscreen";
2027 break;
2028 case HID_DG_TOUCHPAD:
2029 suffix = "Touchpad";
2030 break;
2031 case HID_GD_SYSTEM_CONTROL:
2032 suffix = "System Control";
2033 break;
2034 case HID_CP_CONSUMER_CONTROL:
2035 suffix = "Consumer Control";
2036 break;
2037 case HID_GD_WIRELESS_RADIO_CTLS:
2038 suffix = "Wireless Radio Control";
2039 break;
2040 case HID_GD_SYSTEM_MULTIAXIS:
2041 suffix = "System Multi Axis";
2042 break;
2043 default:
2044 break;
2045 }
2046 }
2047
2048 if (suffix) {
2049 name_len = strlen(hid->name);
2050 suffix_len = strlen(suffix);
2051 if ((name_len < suffix_len) ||
2052 strcmp(hid->name + name_len - suffix_len, suffix)) {
2053 hidinput->name = kasprintf(GFP_KERNEL, "%s %s",
2054 hid->name, suffix);
2055 if (!hidinput->name)
2056 goto fail;
2057 }
2058 }
2059
2060 input_set_drvdata(input_dev, hid);
2061 input_dev->event = hidinput_input_event;
2062 input_dev->open = hidinput_open;
2063 input_dev->close = hidinput_close;
2064 input_dev->setkeycode = hidinput_setkeycode;
2065 input_dev->getkeycode = hidinput_getkeycode;
2066
2067 input_dev->name = hidinput->name ? hidinput->name : hid->name;
2068 input_dev->phys = hid->phys;
2069 input_dev->uniq = hid->uniq;
2070 input_dev->id.bustype = hid->bus;
2071 input_dev->id.vendor = hid->vendor;
2072 input_dev->id.product = hid->product;
2073 input_dev->id.version = hid->version;
2074 input_dev->dev.parent = &hid->dev;
2075
2076 hidinput->input = input_dev;
2077 hidinput->application = application;
2078 list_add_tail(&hidinput->list, &hid->inputs);
2079
2080 INIT_LIST_HEAD(&hidinput->reports);
2081
2082 return hidinput;
2083
2084 fail:
2085 kfree(hidinput);
2086 input_free_device(input_dev);
2087 hid_err(hid, "Out of memory during hid input probe\n");
2088 return NULL;
2089 }
2090
hidinput_has_been_populated(struct hid_input * hidinput)2091 static bool hidinput_has_been_populated(struct hid_input *hidinput)
2092 {
2093 int i;
2094 unsigned long r = 0;
2095
2096 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
2097 r |= hidinput->input->evbit[i];
2098
2099 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
2100 r |= hidinput->input->keybit[i];
2101
2102 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
2103 r |= hidinput->input->relbit[i];
2104
2105 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
2106 r |= hidinput->input->absbit[i];
2107
2108 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
2109 r |= hidinput->input->mscbit[i];
2110
2111 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
2112 r |= hidinput->input->ledbit[i];
2113
2114 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
2115 r |= hidinput->input->sndbit[i];
2116
2117 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
2118 r |= hidinput->input->ffbit[i];
2119
2120 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
2121 r |= hidinput->input->swbit[i];
2122
2123 return !!r;
2124 }
2125
hidinput_cleanup_hidinput(struct hid_device * hid,struct hid_input * hidinput)2126 static void hidinput_cleanup_hidinput(struct hid_device *hid,
2127 struct hid_input *hidinput)
2128 {
2129 struct hid_report *report;
2130 int i, k;
2131
2132 list_del(&hidinput->list);
2133 input_free_device(hidinput->input);
2134 kfree(hidinput->name);
2135
2136 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
2137 if (k == HID_OUTPUT_REPORT &&
2138 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2139 continue;
2140
2141 list_for_each_entry(report, &hid->report_enum[k].report_list,
2142 list) {
2143
2144 for (i = 0; i < report->maxfield; i++)
2145 if (report->field[i]->hidinput == hidinput)
2146 report->field[i]->hidinput = NULL;
2147 }
2148 }
2149
2150 kfree(hidinput);
2151 }
2152
hidinput_match(struct hid_report * report)2153 static struct hid_input *hidinput_match(struct hid_report *report)
2154 {
2155 struct hid_device *hid = report->device;
2156 struct hid_input *hidinput;
2157
2158 list_for_each_entry(hidinput, &hid->inputs, list) {
2159 if (hidinput->report &&
2160 hidinput->report->id == report->id)
2161 return hidinput;
2162 }
2163
2164 return NULL;
2165 }
2166
hidinput_match_application(struct hid_report * report)2167 static struct hid_input *hidinput_match_application(struct hid_report *report)
2168 {
2169 struct hid_device *hid = report->device;
2170 struct hid_input *hidinput;
2171
2172 list_for_each_entry(hidinput, &hid->inputs, list) {
2173 if (hidinput->application == report->application)
2174 return hidinput;
2175
2176 /*
2177 * Keep SystemControl and ConsumerControl applications together
2178 * with the main keyboard, if present.
2179 */
2180 if ((report->application == HID_GD_SYSTEM_CONTROL ||
2181 report->application == HID_CP_CONSUMER_CONTROL) &&
2182 hidinput->application == HID_GD_KEYBOARD) {
2183 return hidinput;
2184 }
2185 }
2186
2187 return NULL;
2188 }
2189
hidinput_configure_usages(struct hid_input * hidinput,struct hid_report * report)2190 static inline void hidinput_configure_usages(struct hid_input *hidinput,
2191 struct hid_report *report)
2192 {
2193 int i, j, k;
2194 int first_field_index = 0;
2195 int slot_collection_index = -1;
2196 int prev_collection_index = -1;
2197 unsigned int slot_idx = 0;
2198 struct hid_field *field;
2199
2200 /*
2201 * First tag all the fields that are part of a slot,
2202 * a slot needs to have one Contact ID in the collection
2203 */
2204 for (i = 0; i < report->maxfield; i++) {
2205 field = report->field[i];
2206
2207 /* ignore fields without usage */
2208 if (field->maxusage < 1)
2209 continue;
2210
2211 /*
2212 * janitoring when collection_index changes
2213 */
2214 if (prev_collection_index != field->usage->collection_index) {
2215 prev_collection_index = field->usage->collection_index;
2216 first_field_index = i;
2217 }
2218
2219 /*
2220 * if we already found a Contact ID in the collection,
2221 * tag and continue to the next.
2222 */
2223 if (slot_collection_index == field->usage->collection_index) {
2224 field->slot_idx = slot_idx;
2225 continue;
2226 }
2227
2228 /* check if the current field has Contact ID */
2229 for (j = 0; j < field->maxusage; j++) {
2230 if (field->usage[j].hid == HID_DG_CONTACTID) {
2231 slot_collection_index = field->usage->collection_index;
2232 slot_idx++;
2233
2234 /*
2235 * mark all previous fields and this one in the
2236 * current collection to be slotted.
2237 */
2238 for (k = first_field_index; k <= i; k++)
2239 report->field[k]->slot_idx = slot_idx;
2240 break;
2241 }
2242 }
2243 }
2244
2245 for (i = 0; i < report->maxfield; i++)
2246 for (j = 0; j < report->field[i]->maxusage; j++)
2247 hidinput_configure_usage(hidinput, report->field[i],
2248 report->field[i]->usage + j,
2249 j);
2250 }
2251
2252 /*
2253 * Register the input device; print a message.
2254 * Configure the input layer interface
2255 * Read all reports and initialize the absolute field values.
2256 */
2257
hidinput_connect(struct hid_device * hid,unsigned int force)2258 int hidinput_connect(struct hid_device *hid, unsigned int force)
2259 {
2260 struct hid_driver *drv = hid->driver;
2261 struct hid_report *report;
2262 struct hid_input *next, *hidinput = NULL;
2263 unsigned int application;
2264 int i, k;
2265
2266 INIT_LIST_HEAD(&hid->inputs);
2267 INIT_WORK(&hid->led_work, hidinput_led_worker);
2268
2269 hid->status &= ~HID_STAT_DUP_DETECTED;
2270
2271 if (!force) {
2272 for (i = 0; i < hid->maxcollection; i++) {
2273 struct hid_collection *col = &hid->collection[i];
2274 if (col->type == HID_COLLECTION_APPLICATION ||
2275 col->type == HID_COLLECTION_PHYSICAL)
2276 if (IS_INPUT_APPLICATION(col->usage))
2277 break;
2278 }
2279
2280 if (i == hid->maxcollection)
2281 return -1;
2282 }
2283
2284 report_features(hid);
2285
2286 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
2287 if (k == HID_OUTPUT_REPORT &&
2288 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
2289 continue;
2290
2291 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
2292
2293 if (!report->maxfield)
2294 continue;
2295
2296 application = report->application;
2297
2298 /*
2299 * Find the previous hidinput report attached
2300 * to this report id.
2301 */
2302 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
2303 hidinput = hidinput_match(report);
2304 else if (hid->maxapplication > 1 &&
2305 (hid->quirks & HID_QUIRK_INPUT_PER_APP))
2306 hidinput = hidinput_match_application(report);
2307
2308 if (!hidinput) {
2309 hidinput = hidinput_allocate(hid, application);
2310 if (!hidinput)
2311 goto out_unwind;
2312 }
2313
2314 hidinput_configure_usages(hidinput, report);
2315
2316 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
2317 hidinput->report = report;
2318
2319 list_add_tail(&report->hidinput_list,
2320 &hidinput->reports);
2321 }
2322 }
2323
2324 hidinput_change_resolution_multipliers(hid);
2325
2326 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
2327 if (drv->input_configured &&
2328 drv->input_configured(hid, hidinput))
2329 goto out_unwind;
2330
2331 if (!hidinput_has_been_populated(hidinput)) {
2332 /* no need to register an input device not populated */
2333 hidinput_cleanup_hidinput(hid, hidinput);
2334 continue;
2335 }
2336
2337 if (input_register_device(hidinput->input))
2338 goto out_unwind;
2339 hidinput->registered = true;
2340 }
2341
2342 if (list_empty(&hid->inputs)) {
2343 hid_dbg(hid, "No inputs registered, leaving\n");
2344 goto out_unwind;
2345 }
2346
2347 if (hid->status & HID_STAT_DUP_DETECTED)
2348 hid_dbg(hid,
2349 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n");
2350
2351 return 0;
2352
2353 out_unwind:
2354 /* unwind the ones we already registered */
2355 hidinput_disconnect(hid);
2356
2357 return -1;
2358 }
2359 EXPORT_SYMBOL_GPL(hidinput_connect);
2360
hidinput_disconnect(struct hid_device * hid)2361 void hidinput_disconnect(struct hid_device *hid)
2362 {
2363 struct hid_input *hidinput, *next;
2364
2365 hidinput_cleanup_battery(hid);
2366
2367 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
2368 list_del(&hidinput->list);
2369 if (hidinput->registered)
2370 input_unregister_device(hidinput->input);
2371 else
2372 input_free_device(hidinput->input);
2373 kfree(hidinput->name);
2374 kfree(hidinput);
2375 }
2376
2377 /* led_work is spawned by input_dev callbacks, but doesn't access the
2378 * parent input_dev at all. Once all input devices are removed, we
2379 * know that led_work will never get restarted, so we can cancel it
2380 * synchronously and are safe. */
2381 cancel_work_sync(&hid->led_work);
2382 }
2383 EXPORT_SYMBOL_GPL(hidinput_disconnect);
2384
2385 #ifdef CONFIG_HID_KUNIT_TEST
2386 #include "hid-input-test.c"
2387 #endif
2388