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Merge tag 'block-5.11-2021-01-10' of git://git.kernel.dk/linux-block
[linux/fpc-iii.git] / drivers / hid / hid-input.c
blobdc7f6b4a775c982a3f966480526083287d717534
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 #define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
52 #define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
53 #define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
54 #define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
55
56 #define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
57 &max, EV_ABS, (c))
58 #define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
59 &max, EV_KEY, (c))
60
61 static bool match_scancode(struct hid_usage *usage,
62 unsigned int cur_idx, unsigned int scancode)
63 {
64 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
65 }
66
67 static bool match_keycode(struct hid_usage *usage,
68 unsigned int cur_idx, unsigned int keycode)
69 {
70 /*
71 * We should exclude unmapped usages when doing lookup by keycode.
72 */
73 return (usage->type == EV_KEY && usage->code == keycode);
74 }
75
76 static bool match_index(struct hid_usage *usage,
77 unsigned int cur_idx, unsigned int idx)
78 {
79 return cur_idx == idx;
80 }
81
82 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
83 unsigned int cur_idx, unsigned int val);
84
85 static struct hid_usage *hidinput_find_key(struct hid_device *hid,
86 hid_usage_cmp_t match,
87 unsigned int value,
88 unsigned int *usage_idx)
89 {
90 unsigned int i, j, k, cur_idx = 0;
91 struct hid_report *report;
92 struct hid_usage *usage;
93
94 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
95 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
96 for (i = 0; i < report->maxfield; i++) {
97 for (j = 0; j < report->field[i]->maxusage; j++) {
98 usage = report->field[i]->usage + j;
99 if (usage->type == EV_KEY || usage->type == 0) {
100 if (match(usage, cur_idx, value)) {
101 if (usage_idx)
102 *usage_idx = cur_idx;
103 return usage;
104 }
105 cur_idx++;
106 }
107 }
108 }
109 }
110 }
111 return NULL;
112 }
113
114 static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
115 const struct input_keymap_entry *ke,
116 unsigned int *index)
117 {
118 struct hid_usage *usage;
119 unsigned int scancode;
120
121 if (ke->flags & INPUT_KEYMAP_BY_INDEX)
122 usage = hidinput_find_key(hid, match_index, ke->index, index);
123 else if (input_scancode_to_scalar(ke, &scancode) == 0)
124 usage = hidinput_find_key(hid, match_scancode, scancode, index);
125 else
126 usage = NULL;
127
128 return usage;
129 }
130
131 static int hidinput_getkeycode(struct input_dev *dev,
132 struct input_keymap_entry *ke)
133 {
134 struct hid_device *hid = input_get_drvdata(dev);
135 struct hid_usage *usage;
136 unsigned int scancode, index;
137
138 usage = hidinput_locate_usage(hid, ke, &index);
139 if (usage) {
140 ke->keycode = usage->type == EV_KEY ?
141 usage->code : KEY_RESERVED;
142 ke->index = index;
143 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
144 ke->len = sizeof(scancode);
145 memcpy(ke->scancode, &scancode, sizeof(scancode));
146 return 0;
147 }
148
149 return -EINVAL;
150 }
151
152 static int hidinput_setkeycode(struct input_dev *dev,
153 const struct input_keymap_entry *ke,
154 unsigned int *old_keycode)
155 {
156 struct hid_device *hid = input_get_drvdata(dev);
157 struct hid_usage *usage;
158
159 usage = hidinput_locate_usage(hid, ke, NULL);
160 if (usage) {
161 *old_keycode = usage->type == EV_KEY ?
162 usage->code : KEY_RESERVED;
163 usage->code = ke->keycode;
164
165 clear_bit(*old_keycode, dev->keybit);
166 set_bit(usage->code, dev->keybit);
167 dbg_hid("Assigned keycode %d to HID usage code %x\n",
168 usage->code, usage->hid);
169
170 /*
171 * Set the keybit for the old keycode if the old keycode is used
172 * by another key
173 */
174 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
175 set_bit(*old_keycode, dev->keybit);
176
177 return 0;
178 }
179
180 return -EINVAL;
181 }
182
183
184 /**
185 * hidinput_calc_abs_res - calculate an absolute axis resolution
186 * @field: the HID report field to calculate resolution for
187 * @code: axis code
188 *
189 * The formula is:
190 * (logical_maximum - logical_minimum)
191 * resolution = ----------------------------------------------------------
192 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent
193 *
194 * as seen in the HID specification v1.11 6.2.2.7 Global Items.
195 *
196 * Only exponent 1 length units are processed. Centimeters and inches are
197 * converted to millimeters. Degrees are converted to radians.
198 */
199 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
200 {
201 __s32 unit_exponent = field->unit_exponent;
202 __s32 logical_extents = field->logical_maximum -
203 field->logical_minimum;
204 __s32 physical_extents = field->physical_maximum -
205 field->physical_minimum;
206 __s32 prev;
207
208 /* Check if the extents are sane */
209 if (logical_extents <= 0 || physical_extents <= 0)
210 return 0;
211
212 /*
213 * Verify and convert units.
214 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
215 */
216 switch (code) {
217 case ABS_X:
218 case ABS_Y:
219 case ABS_Z:
220 case ABS_MT_POSITION_X:
221 case ABS_MT_POSITION_Y:
222 case ABS_MT_TOOL_X:
223 case ABS_MT_TOOL_Y:
224 case ABS_MT_TOUCH_MAJOR:
225 case ABS_MT_TOUCH_MINOR:
226 if (field->unit == 0x11) { /* If centimeters */
227 /* Convert to millimeters */
228 unit_exponent += 1;
229 } else if (field->unit == 0x13) { /* If inches */
230 /* Convert to millimeters */
231 prev = physical_extents;
232 physical_extents *= 254;
233 if (physical_extents < prev)
234 return 0;
235 unit_exponent -= 1;
236 } else {
237 return 0;
238 }
239 break;
240
241 case ABS_RX:
242 case ABS_RY:
243 case ABS_RZ:
244 case ABS_WHEEL:
245 case ABS_TILT_X:
246 case ABS_TILT_Y:
247 if (field->unit == 0x14) { /* If degrees */
248 /* Convert to radians */
249 prev = logical_extents;
250 logical_extents *= 573;
251 if (logical_extents < prev)
252 return 0;
253 unit_exponent += 1;
254 } else if (field->unit != 0x12) { /* If not radians */
255 return 0;
256 }
257 break;
258
259 default:
260 return 0;
261 }
262
263 /* Apply negative unit exponent */
264 for (; unit_exponent < 0; unit_exponent++) {
265 prev = logical_extents;
266 logical_extents *= 10;
267 if (logical_extents < prev)
268 return 0;
269 }
270 /* Apply positive unit exponent */
271 for (; unit_exponent > 0; unit_exponent--) {
272 prev = physical_extents;
273 physical_extents *= 10;
274 if (physical_extents < prev)
275 return 0;
276 }
277
278 /* Calculate resolution */
279 return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
280 }
281 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
282
283 #ifdef CONFIG_HID_BATTERY_STRENGTH
284 static enum power_supply_property hidinput_battery_props[] = {
285 POWER_SUPPLY_PROP_PRESENT,
286 POWER_SUPPLY_PROP_ONLINE,
287 POWER_SUPPLY_PROP_CAPACITY,
288 POWER_SUPPLY_PROP_MODEL_NAME,
289 POWER_SUPPLY_PROP_STATUS,
290 POWER_SUPPLY_PROP_SCOPE,
291 };
292
293 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
294 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
295 #define HID_BATTERY_QUIRK_IGNORE (1 << 2) /* completely ignore the battery */
296
297 static const struct hid_device_id hid_battery_quirks[] = {
298 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
299 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
300 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
301 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
302 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
303 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
304 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
305 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
306 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
307 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
308 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO),
309 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
310 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
311 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
312 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
313 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM,
314 USB_DEVICE_ID_ELECOM_BM084),
315 HID_BATTERY_QUIRK_IGNORE },
316 { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL,
317 USB_DEVICE_ID_SYMBOL_SCANNER_3),
318 HID_BATTERY_QUIRK_IGNORE },
319 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,
320 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD),
321 HID_BATTERY_QUIRK_IGNORE },
322 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,
323 USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD),
324 HID_BATTERY_QUIRK_IGNORE },
325 {}
326 };
327
328 static unsigned find_battery_quirk(struct hid_device *hdev)
329 {
330 unsigned quirks = 0;
331 const struct hid_device_id *match;
332
333 match = hid_match_id(hdev, hid_battery_quirks);
334 if (match != NULL)
335 quirks = match->driver_data;
336
337 return quirks;
338 }
339
340 static int hidinput_scale_battery_capacity(struct hid_device *dev,
341 int value)
342 {
343 if (dev->battery_min < dev->battery_max &&
344 value >= dev->battery_min && value <= dev->battery_max)
345 value = ((value - dev->battery_min) * 100) /
346 (dev->battery_max - dev->battery_min);
347
348 return value;
349 }
350
351 static int hidinput_query_battery_capacity(struct hid_device *dev)
352 {
353 u8 *buf;
354 int ret;
355
356 buf = kmalloc(4, GFP_KERNEL);
357 if (!buf)
358 return -ENOMEM;
359
360 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4,
361 dev->battery_report_type, HID_REQ_GET_REPORT);
362 if (ret < 2) {
363 kfree(buf);
364 return -ENODATA;
365 }
366
367 ret = hidinput_scale_battery_capacity(dev, buf[1]);
368 kfree(buf);
369 return ret;
370 }
371
372 static int hidinput_get_battery_property(struct power_supply *psy,
373 enum power_supply_property prop,
374 union power_supply_propval *val)
375 {
376 struct hid_device *dev = power_supply_get_drvdata(psy);
377 int value;
378 int ret = 0;
379
380 switch (prop) {
381 case POWER_SUPPLY_PROP_PRESENT:
382 case POWER_SUPPLY_PROP_ONLINE:
383 val->intval = 1;
384 break;
385
386 case POWER_SUPPLY_PROP_CAPACITY:
387 if (dev->battery_status != HID_BATTERY_REPORTED &&
388 !dev->battery_avoid_query) {
389 value = hidinput_query_battery_capacity(dev);
390 if (value < 0)
391 return value;
392 } else {
393 value = dev->battery_capacity;
394 }
395
396 val->intval = value;
397 break;
398
399 case POWER_SUPPLY_PROP_MODEL_NAME:
400 val->strval = dev->name;
401 break;
402
403 case POWER_SUPPLY_PROP_STATUS:
404 if (dev->battery_status != HID_BATTERY_REPORTED &&
405 !dev->battery_avoid_query) {
406 value = hidinput_query_battery_capacity(dev);
407 if (value < 0)
408 return value;
409
410 dev->battery_capacity = value;
411 dev->battery_status = HID_BATTERY_QUERIED;
412 }
413
414 if (dev->battery_status == HID_BATTERY_UNKNOWN)
415 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
416 else if (dev->battery_capacity == 100)
417 val->intval = POWER_SUPPLY_STATUS_FULL;
418 else
419 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
420 break;
421
422 case POWER_SUPPLY_PROP_SCOPE:
423 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
424 break;
425
426 default:
427 ret = -EINVAL;
428 break;
429 }
430
431 return ret;
432 }
433
434 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
435 {
436 struct power_supply_desc *psy_desc;
437 struct power_supply_config psy_cfg = { .drv_data = dev, };
438 unsigned quirks;
439 s32 min, max;
440 int error;
441
442 if (dev->battery)
443 return 0; /* already initialized? */
444
445 quirks = find_battery_quirk(dev);
446
447 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
448 dev->bus, dev->vendor, dev->product, dev->version, quirks);
449
450 if (quirks & HID_BATTERY_QUIRK_IGNORE)
451 return 0;
452
453 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
454 if (!psy_desc)
455 return -ENOMEM;
456
457 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery",
458 strlen(dev->uniq) ?
459 dev->uniq : dev_name(&dev->dev));
460 if (!psy_desc->name) {
461 error = -ENOMEM;
462 goto err_free_mem;
463 }
464
465 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
466 psy_desc->properties = hidinput_battery_props;
467 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
468 psy_desc->use_for_apm = 0;
469 psy_desc->get_property = hidinput_get_battery_property;
470
471 min = field->logical_minimum;
472 max = field->logical_maximum;
473
474 if (quirks & HID_BATTERY_QUIRK_PERCENT) {
475 min = 0;
476 max = 100;
477 }
478
479 if (quirks & HID_BATTERY_QUIRK_FEATURE)
480 report_type = HID_FEATURE_REPORT;
481
482 dev->battery_min = min;
483 dev->battery_max = max;
484 dev->battery_report_type = report_type;
485 dev->battery_report_id = field->report->id;
486
487 /*
488 * Stylus is normally not connected to the device and thus we
489 * can't query the device and get meaningful battery strength.
490 * We have to wait for the device to report it on its own.
491 */
492 dev->battery_avoid_query = report_type == HID_INPUT_REPORT &&
493 field->physical == HID_DG_STYLUS;
494
495 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
496 if (IS_ERR(dev->battery)) {
497 error = PTR_ERR(dev->battery);
498 hid_warn(dev, "can't register power supply: %d\n", error);
499 goto err_free_name;
500 }
501
502 power_supply_powers(dev->battery, &dev->dev);
503 return 0;
504
505 err_free_name:
506 kfree(psy_desc->name);
507 err_free_mem:
508 kfree(psy_desc);
509 dev->battery = NULL;
510 return error;
511 }
512
513 static void hidinput_cleanup_battery(struct hid_device *dev)
514 {
515 const struct power_supply_desc *psy_desc;
516
517 if (!dev->battery)
518 return;
519
520 psy_desc = dev->battery->desc;
521 power_supply_unregister(dev->battery);
522 kfree(psy_desc->name);
523 kfree(psy_desc);
524 dev->battery = NULL;
525 }
526
527 static void hidinput_update_battery(struct hid_device *dev, int value)
528 {
529 int capacity;
530
531 if (!dev->battery)
532 return;
533
534 if (value == 0 || value < dev->battery_min || value > dev->battery_max)
535 return;
536
537 capacity = hidinput_scale_battery_capacity(dev, value);
538
539 if (dev->battery_status != HID_BATTERY_REPORTED ||
540 capacity != dev->battery_capacity ||
541 ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) {
542 dev->battery_capacity = capacity;
543 dev->battery_status = HID_BATTERY_REPORTED;
544 dev->battery_ratelimit_time =
545 ktime_add_ms(ktime_get_coarse(), 30 * 1000);
546 power_supply_changed(dev->battery);
547 }
548 }
549 #else /* !CONFIG_HID_BATTERY_STRENGTH */
550 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
551 struct hid_field *field)
552 {
553 return 0;
554 }
555
556 static void hidinput_cleanup_battery(struct hid_device *dev)
557 {
558 }
559
560 static void hidinput_update_battery(struct hid_device *dev, int value)
561 {
562 }
563 #endif /* CONFIG_HID_BATTERY_STRENGTH */
564
565 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
566 struct hid_usage *usage)
567 {
568 struct input_dev *input = hidinput->input;
569 struct hid_device *device = input_get_drvdata(input);
570 int max = 0, code;
571 unsigned long *bit = NULL;
572
573 field->hidinput = hidinput;
574
575 if (field->flags & HID_MAIN_ITEM_CONSTANT)
576 goto ignore;
577
578 /* Ignore if report count is out of bounds. */
579 if (field->report_count < 1)
580 goto ignore;
581
582 /* only LED usages are supported in output fields */
583 if (field->report_type == HID_OUTPUT_REPORT &&
584 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
585 goto ignore;
586 }
587
588 if (device->driver->input_mapping) {
589 int ret = device->driver->input_mapping(device, hidinput, field,
590 usage, &bit, &max);
591 if (ret > 0)
592 goto mapped;
593 if (ret < 0)
594 goto ignore;
595 }
596
597 switch (usage->hid & HID_USAGE_PAGE) {
598 case HID_UP_UNDEFINED:
599 goto ignore;
600
601 case HID_UP_KEYBOARD:
602 set_bit(EV_REP, input->evbit);
603
604 if ((usage->hid & HID_USAGE) < 256) {
605 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
606 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
607 } else
608 map_key(KEY_UNKNOWN);
609
610 break;
611
612 case HID_UP_BUTTON:
613 code = ((usage->hid - 1) & HID_USAGE);
614
615 switch (field->application) {
616 case HID_GD_MOUSE:
617 case HID_GD_POINTER: code += BTN_MOUSE; break;
618 case HID_GD_JOYSTICK:
619 if (code <= 0xf)
620 code += BTN_JOYSTICK;
621 else
622 code += BTN_TRIGGER_HAPPY - 0x10;
623 break;
624 case HID_GD_GAMEPAD:
625 if (code <= 0xf)
626 code += BTN_GAMEPAD;
627 else
628 code += BTN_TRIGGER_HAPPY - 0x10;
629 break;
630 default:
631 switch (field->physical) {
632 case HID_GD_MOUSE:
633 case HID_GD_POINTER: code += BTN_MOUSE; break;
634 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
635 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
636 default: code += BTN_MISC;
637 }
638 }
639
640 map_key(code);
641 break;
642
643 case HID_UP_SIMULATION:
644 switch (usage->hid & 0xffff) {
645 case 0xba: map_abs(ABS_RUDDER); break;
646 case 0xbb: map_abs(ABS_THROTTLE); break;
647 case 0xc4: map_abs(ABS_GAS); break;
648 case 0xc5: map_abs(ABS_BRAKE); break;
649 case 0xc8: map_abs(ABS_WHEEL); break;
650 default: goto ignore;
651 }
652 break;
653
654 case HID_UP_GENDESK:
655 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
656 switch (usage->hid & 0xf) {
657 case 0x1: map_key_clear(KEY_POWER); break;
658 case 0x2: map_key_clear(KEY_SLEEP); break;
659 case 0x3: map_key_clear(KEY_WAKEUP); break;
660 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
661 case 0x5: map_key_clear(KEY_MENU); break;
662 case 0x6: map_key_clear(KEY_PROG1); break;
663 case 0x7: map_key_clear(KEY_HELP); break;
664 case 0x8: map_key_clear(KEY_EXIT); break;
665 case 0x9: map_key_clear(KEY_SELECT); break;
666 case 0xa: map_key_clear(KEY_RIGHT); break;
667 case 0xb: map_key_clear(KEY_LEFT); break;
668 case 0xc: map_key_clear(KEY_UP); break;
669 case 0xd: map_key_clear(KEY_DOWN); break;
670 case 0xe: map_key_clear(KEY_POWER2); break;
671 case 0xf: map_key_clear(KEY_RESTART); break;
672 default: goto unknown;
673 }
674 break;
675 }
676
677 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */
678 switch (usage->hid & 0xf) {
679 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break;
680 default: goto ignore;
681 }
682 break;
683 }
684
685 /*
686 * Some lazy vendors declare 255 usages for System Control,
687 * leading to the creation of ABS_X|Y axis and too many others.
688 * It wouldn't be a problem if joydev doesn't consider the
689 * device as a joystick then.
690 */
691 if (field->application == HID_GD_SYSTEM_CONTROL)
692 goto ignore;
693
694 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
695 switch (usage->hid) {
696 case HID_GD_UP: usage->hat_dir = 1; break;
697 case HID_GD_DOWN: usage->hat_dir = 5; break;
698 case HID_GD_RIGHT: usage->hat_dir = 3; break;
699 case HID_GD_LEFT: usage->hat_dir = 7; break;
700 default: goto unknown;
701 }
702 if (field->dpad) {
703 map_abs(field->dpad);
704 goto ignore;
705 }
706 map_abs(ABS_HAT0X);
707 break;
708 }
709
710 switch (usage->hid) {
711 /* These usage IDs map directly to the usage codes. */
712 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
713 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
714 if (field->flags & HID_MAIN_ITEM_RELATIVE)
715 map_rel(usage->hid & 0xf);
716 else
717 map_abs_clear(usage->hid & 0xf);
718 break;
719
720 case HID_GD_WHEEL:
721 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
722 set_bit(REL_WHEEL, input->relbit);
723 map_rel(REL_WHEEL_HI_RES);
724 } else {
725 map_abs(usage->hid & 0xf);
726 }
727 break;
728 case HID_GD_SLIDER: case HID_GD_DIAL:
729 if (field->flags & HID_MAIN_ITEM_RELATIVE)
730 map_rel(usage->hid & 0xf);
731 else
732 map_abs(usage->hid & 0xf);
733 break;
734
735 case HID_GD_HATSWITCH:
736 usage->hat_min = field->logical_minimum;
737 usage->hat_max = field->logical_maximum;
738 map_abs(ABS_HAT0X);
739 break;
740
741 case HID_GD_START: map_key_clear(BTN_START); break;
742 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
743
744 case HID_GD_RFKILL_BTN:
745 /* MS wireless radio ctl extension, also check CA */
746 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
747 map_key_clear(KEY_RFKILL);
748 /* We need to simulate the btn release */
749 field->flags |= HID_MAIN_ITEM_RELATIVE;
750 break;
751 }
752 goto unknown;
753
754 default: goto unknown;
755 }
756
757 break;
758
759 case HID_UP_LED:
760 switch (usage->hid & 0xffff) { /* HID-Value: */
761 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
762 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
763 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
764 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
765 case 0x05: map_led (LED_KANA); break; /* "Kana" */
766 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
767 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
768 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
769 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
770 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
771 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
772
773 default: goto ignore;
774 }
775 break;
776
777 case HID_UP_DIGITIZER:
778 if ((field->application & 0xff) == 0x01) /* Digitizer */
779 __set_bit(INPUT_PROP_POINTER, input->propbit);
780 else if ((field->application & 0xff) == 0x02) /* Pen */
781 __set_bit(INPUT_PROP_DIRECT, input->propbit);
782
783 switch (usage->hid & 0xff) {
784 case 0x00: /* Undefined */
785 goto ignore;
786
787 case 0x30: /* TipPressure */
788 if (!test_bit(BTN_TOUCH, input->keybit)) {
789 device->quirks |= HID_QUIRK_NOTOUCH;
790 set_bit(EV_KEY, input->evbit);
791 set_bit(BTN_TOUCH, input->keybit);
792 }
793 map_abs_clear(ABS_PRESSURE);
794 break;
795
796 case 0x32: /* InRange */
797 switch (field->physical & 0xff) {
798 case 0x21: map_key(BTN_TOOL_MOUSE); break;
799 case 0x22: map_key(BTN_TOOL_FINGER); break;
800 default: map_key(BTN_TOOL_PEN); break;
801 }
802 break;
803
804 case 0x3b: /* Battery Strength */
805 hidinput_setup_battery(device, HID_INPUT_REPORT, field);
806 usage->type = EV_PWR;
807 return;
808
809 case 0x3c: /* Invert */
810 map_key_clear(BTN_TOOL_RUBBER);
811 break;
812
813 case 0x3d: /* X Tilt */
814 map_abs_clear(ABS_TILT_X);
815 break;
816
817 case 0x3e: /* Y Tilt */
818 map_abs_clear(ABS_TILT_Y);
819 break;
820
821 case 0x33: /* Touch */
822 case 0x42: /* TipSwitch */
823 case 0x43: /* TipSwitch2 */
824 device->quirks &= ~HID_QUIRK_NOTOUCH;
825 map_key_clear(BTN_TOUCH);
826 break;
827
828 case 0x44: /* BarrelSwitch */
829 map_key_clear(BTN_STYLUS);
830 break;
831
832 case 0x45: /* ERASER */
833 /*
834 * This event is reported when eraser tip touches the surface.
835 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when
836 * tool gets in proximity.
837 */
838 map_key_clear(BTN_TOUCH);
839 break;
840
841 case 0x46: /* TabletPick */
842 case 0x5a: /* SecondaryBarrelSwitch */
843 map_key_clear(BTN_STYLUS2);
844 break;
845
846 case 0x5b: /* TransducerSerialNumber */
847 usage->type = EV_MSC;
848 usage->code = MSC_SERIAL;
849 bit = input->mscbit;
850 max = MSC_MAX;
851 break;
852
853 default: goto unknown;
854 }
855 break;
856
857 case HID_UP_TELEPHONY:
858 switch (usage->hid & HID_USAGE) {
859 case 0x2f: map_key_clear(KEY_MICMUTE); break;
860 case 0xb0: map_key_clear(KEY_NUMERIC_0); break;
861 case 0xb1: map_key_clear(KEY_NUMERIC_1); break;
862 case 0xb2: map_key_clear(KEY_NUMERIC_2); break;
863 case 0xb3: map_key_clear(KEY_NUMERIC_3); break;
864 case 0xb4: map_key_clear(KEY_NUMERIC_4); break;
865 case 0xb5: map_key_clear(KEY_NUMERIC_5); break;
866 case 0xb6: map_key_clear(KEY_NUMERIC_6); break;
867 case 0xb7: map_key_clear(KEY_NUMERIC_7); break;
868 case 0xb8: map_key_clear(KEY_NUMERIC_8); break;
869 case 0xb9: map_key_clear(KEY_NUMERIC_9); break;
870 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;
871 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;
872 case 0xbc: map_key_clear(KEY_NUMERIC_A); break;
873 case 0xbd: map_key_clear(KEY_NUMERIC_B); break;
874 case 0xbe: map_key_clear(KEY_NUMERIC_C); break;
875 case 0xbf: map_key_clear(KEY_NUMERIC_D); break;
876 default: goto ignore;
877 }
878 break;
879
880 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
881 switch (usage->hid & HID_USAGE) {
882 case 0x000: goto ignore;
883 case 0x030: map_key_clear(KEY_POWER); break;
884 case 0x031: map_key_clear(KEY_RESTART); break;
885 case 0x032: map_key_clear(KEY_SLEEP); break;
886 case 0x034: map_key_clear(KEY_SLEEP); break;
887 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
888 case 0x036: map_key_clear(BTN_MISC); break;
889
890 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
891 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
892 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
893 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
894 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
895 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
896 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
897 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
898 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
899
900 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
901 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
902 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
903 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
904 case 0x069: map_key_clear(KEY_RED); break;
905 case 0x06a: map_key_clear(KEY_GREEN); break;
906 case 0x06b: map_key_clear(KEY_BLUE); break;
907 case 0x06c: map_key_clear(KEY_YELLOW); break;
908 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break;
909
910 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
911 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
912 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
913 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
914 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
915 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
916
917 case 0x079: map_key_clear(KEY_KBDILLUMUP); break;
918 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break;
919 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break;
920
921 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
922 case 0x083: map_key_clear(KEY_LAST); break;
923 case 0x084: map_key_clear(KEY_ENTER); break;
924 case 0x088: map_key_clear(KEY_PC); break;
925 case 0x089: map_key_clear(KEY_TV); break;
926 case 0x08a: map_key_clear(KEY_WWW); break;
927 case 0x08b: map_key_clear(KEY_DVD); break;
928 case 0x08c: map_key_clear(KEY_PHONE); break;
929 case 0x08d: map_key_clear(KEY_PROGRAM); break;
930 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
931 case 0x08f: map_key_clear(KEY_GAMES); break;
932 case 0x090: map_key_clear(KEY_MEMO); break;
933 case 0x091: map_key_clear(KEY_CD); break;
934 case 0x092: map_key_clear(KEY_VCR); break;
935 case 0x093: map_key_clear(KEY_TUNER); break;
936 case 0x094: map_key_clear(KEY_EXIT); break;
937 case 0x095: map_key_clear(KEY_HELP); break;
938 case 0x096: map_key_clear(KEY_TAPE); break;
939 case 0x097: map_key_clear(KEY_TV2); break;
940 case 0x098: map_key_clear(KEY_SAT); break;
941 case 0x09a: map_key_clear(KEY_PVR); break;
942
943 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
944 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
945 case 0x0a0: map_key_clear(KEY_VCR2); break;
946
947 case 0x0b0: map_key_clear(KEY_PLAY); break;
948 case 0x0b1: map_key_clear(KEY_PAUSE); break;
949 case 0x0b2: map_key_clear(KEY_RECORD); break;
950 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
951 case 0x0b4: map_key_clear(KEY_REWIND); break;
952 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
953 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
954 case 0x0b7: map_key_clear(KEY_STOPCD); break;
955 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
956 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
957 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
958 case 0x0bf: map_key_clear(KEY_SLOW); break;
959
960 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
961 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
962 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
963 case 0x0e2: map_key_clear(KEY_MUTE); break;
964 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
965 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
966 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
967 case 0x0f5: map_key_clear(KEY_SLOW); break;
968
969 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
970 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
971 case 0x183: map_key_clear(KEY_CONFIG); break;
972 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
973 case 0x185: map_key_clear(KEY_EDITOR); break;
974 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
975 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
976 case 0x188: map_key_clear(KEY_PRESENTATION); break;
977 case 0x189: map_key_clear(KEY_DATABASE); break;
978 case 0x18a: map_key_clear(KEY_MAIL); break;
979 case 0x18b: map_key_clear(KEY_NEWS); break;
980 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
981 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
982 case 0x18e: map_key_clear(KEY_CALENDAR); break;
983 case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
984 case 0x190: map_key_clear(KEY_JOURNAL); break;
985 case 0x191: map_key_clear(KEY_FINANCE); break;
986 case 0x192: map_key_clear(KEY_CALC); break;
987 case 0x193: map_key_clear(KEY_PLAYER); break;
988 case 0x194: map_key_clear(KEY_FILE); break;
989 case 0x196: map_key_clear(KEY_WWW); break;
990 case 0x199: map_key_clear(KEY_CHAT); break;
991 case 0x19c: map_key_clear(KEY_LOGOFF); break;
992 case 0x19e: map_key_clear(KEY_COFFEE); break;
993 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
994 case 0x1a2: map_key_clear(KEY_APPSELECT); break;
995 case 0x1a3: map_key_clear(KEY_NEXT); break;
996 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
997 case 0x1a6: map_key_clear(KEY_HELP); break;
998 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
999 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
1000 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
1001 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
1002 case 0x1b4: map_key_clear(KEY_FILE); break;
1003 case 0x1b6: map_key_clear(KEY_IMAGES); break;
1004 case 0x1b7: map_key_clear(KEY_AUDIO); break;
1005 case 0x1b8: map_key_clear(KEY_VIDEO); break;
1006 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
1007 case 0x1bd: map_key_clear(KEY_INFO); break;
1008 case 0x1cb: map_key_clear(KEY_ASSISTANT); break;
1009 case 0x201: map_key_clear(KEY_NEW); break;
1010 case 0x202: map_key_clear(KEY_OPEN); break;
1011 case 0x203: map_key_clear(KEY_CLOSE); break;
1012 case 0x204: map_key_clear(KEY_EXIT); break;
1013 case 0x207: map_key_clear(KEY_SAVE); break;
1014 case 0x208: map_key_clear(KEY_PRINT); break;
1015 case 0x209: map_key_clear(KEY_PROPS); break;
1016 case 0x21a: map_key_clear(KEY_UNDO); break;
1017 case 0x21b: map_key_clear(KEY_COPY); break;
1018 case 0x21c: map_key_clear(KEY_CUT); break;
1019 case 0x21d: map_key_clear(KEY_PASTE); break;
1020 case 0x21f: map_key_clear(KEY_FIND); break;
1021 case 0x221: map_key_clear(KEY_SEARCH); break;
1022 case 0x222: map_key_clear(KEY_GOTO); break;
1023 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
1024 case 0x224: map_key_clear(KEY_BACK); break;
1025 case 0x225: map_key_clear(KEY_FORWARD); break;
1026 case 0x226: map_key_clear(KEY_STOP); break;
1027 case 0x227: map_key_clear(KEY_REFRESH); break;
1028 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
1029 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
1030 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
1031 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
1032 case 0x232: map_key_clear(KEY_FULL_SCREEN); break;
1033 case 0x233: map_key_clear(KEY_SCROLLUP); break;
1034 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
1035 case 0x238: /* AC Pan */
1036 set_bit(REL_HWHEEL, input->relbit);
1037 map_rel(REL_HWHEEL_HI_RES);
1038 break;
1039 case 0x23d: map_key_clear(KEY_EDIT); break;
1040 case 0x25f: map_key_clear(KEY_CANCEL); break;
1041 case 0x269: map_key_clear(KEY_INSERT); break;
1042 case 0x26a: map_key_clear(KEY_DELETE); break;
1043 case 0x279: map_key_clear(KEY_REDO); break;
1044
1045 case 0x289: map_key_clear(KEY_REPLY); break;
1046 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
1047 case 0x28c: map_key_clear(KEY_SEND); break;
1048
1049 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break;
1050
1051 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
1052 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
1053 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
1054 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
1055 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
1056 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
1057
1058 case 0x29f: map_key_clear(KEY_SCALE); break;
1059
1060 default: map_key_clear(KEY_UNKNOWN);
1061 }
1062 break;
1063
1064 case HID_UP_GENDEVCTRLS:
1065 switch (usage->hid) {
1066 case HID_DC_BATTERYSTRENGTH:
1067 hidinput_setup_battery(device, HID_INPUT_REPORT, field);
1068 usage->type = EV_PWR;
1069 return;
1070 }
1071 goto unknown;
1072
1073 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
1074 set_bit(EV_REP, input->evbit);
1075 switch (usage->hid & HID_USAGE) {
1076 case 0x021: map_key_clear(KEY_PRINT); break;
1077 case 0x070: map_key_clear(KEY_HP); break;
1078 case 0x071: map_key_clear(KEY_CAMERA); break;
1079 case 0x072: map_key_clear(KEY_SOUND); break;
1080 case 0x073: map_key_clear(KEY_QUESTION); break;
1081 case 0x080: map_key_clear(KEY_EMAIL); break;
1082 case 0x081: map_key_clear(KEY_CHAT); break;
1083 case 0x082: map_key_clear(KEY_SEARCH); break;
1084 case 0x083: map_key_clear(KEY_CONNECT); break;
1085 case 0x084: map_key_clear(KEY_FINANCE); break;
1086 case 0x085: map_key_clear(KEY_SPORT); break;
1087 case 0x086: map_key_clear(KEY_SHOP); break;
1088 default: goto ignore;
1089 }
1090 break;
1091
1092 case HID_UP_HPVENDOR2:
1093 set_bit(EV_REP, input->evbit);
1094 switch (usage->hid & HID_USAGE) {
1095 case 0x001: map_key_clear(KEY_MICMUTE); break;
1096 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1097 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
1098 default: goto ignore;
1099 }
1100 break;
1101
1102 case HID_UP_MSVENDOR:
1103 goto ignore;
1104
1105 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
1106 set_bit(EV_REP, input->evbit);
1107 goto ignore;
1108
1109 case HID_UP_LOGIVENDOR:
1110 /* intentional fallback */
1111 case HID_UP_LOGIVENDOR2:
1112 /* intentional fallback */
1113 case HID_UP_LOGIVENDOR3:
1114 goto ignore;
1115
1116 case HID_UP_PID:
1117 switch (usage->hid & HID_USAGE) {
1118 case 0xa4: map_key_clear(BTN_DEAD); break;
1119 default: goto ignore;
1120 }
1121 break;
1122
1123 default:
1124 unknown:
1125 if (field->report_size == 1) {
1126 if (field->report->type == HID_OUTPUT_REPORT) {
1127 map_led(LED_MISC);
1128 break;
1129 }
1130 map_key(BTN_MISC);
1131 break;
1132 }
1133 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
1134 map_rel(REL_MISC);
1135 break;
1136 }
1137 map_abs(ABS_MISC);
1138 break;
1139 }
1140
1141 mapped:
1142 /* Mapping failed, bail out */
1143 if (!bit)
1144 return;
1145
1146 if (device->driver->input_mapped &&
1147 device->driver->input_mapped(device, hidinput, field, usage,
1148 &bit, &max) < 0) {
1149 /*
1150 * The driver indicated that no further generic handling
1151 * of the usage is desired.
1152 */
1153 return;
1154 }
1155
1156 set_bit(usage->type, input->evbit);
1157
1158 /*
1159 * This part is *really* controversial:
1160 * - HID aims at being generic so we should do our best to export
1161 * all incoming events
1162 * - HID describes what events are, so there is no reason for ABS_X
1163 * to be mapped to ABS_Y
1164 * - HID is using *_MISC+N as a default value, but nothing prevents
1165 * *_MISC+N to overwrite a legitimate even, which confuses userspace
1166 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different
1167 * processing)
1168 *
1169 * If devices still want to use this (at their own risk), they will
1170 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but
1171 * the default should be a reliable mapping.
1172 */
1173 while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
1174 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {
1175 usage->code = find_next_zero_bit(bit,
1176 max + 1,
1177 usage->code);
1178 } else {
1179 device->status |= HID_STAT_DUP_DETECTED;
1180 goto ignore;
1181 }
1182 }
1183
1184 if (usage->code > max)
1185 goto ignore;
1186
1187 if (usage->type == EV_ABS) {
1188
1189 int a = field->logical_minimum;
1190 int b = field->logical_maximum;
1191
1192 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1193 a = field->logical_minimum = 0;
1194 b = field->logical_maximum = 255;
1195 }
1196
1197 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1198 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
1199 else input_set_abs_params(input, usage->code, a, b, 0, 0);
1200
1201 input_abs_set_res(input, usage->code,
1202 hidinput_calc_abs_res(field, usage->code));
1203
1204 /* use a larger default input buffer for MT devices */
1205 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1206 input_set_events_per_packet(input, 60);
1207 }
1208
1209 if (usage->type == EV_ABS &&
1210 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
1211 int i;
1212 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1213 input_set_abs_params(input, i, -1, 1, 0, 0);
1214 set_bit(i, input->absbit);
1215 }
1216 if (usage->hat_dir && !field->dpad)
1217 field->dpad = usage->code;
1218 }
1219
1220 /* for those devices which produce Consumer volume usage as relative,
1221 * we emulate pressing volumeup/volumedown appropriate number of times
1222 * in hidinput_hid_event()
1223 */
1224 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1225 (usage->code == ABS_VOLUME)) {
1226 set_bit(KEY_VOLUMEUP, input->keybit);
1227 set_bit(KEY_VOLUMEDOWN, input->keybit);
1228 }
1229
1230 if (usage->type == EV_KEY) {
1231 set_bit(EV_MSC, input->evbit);
1232 set_bit(MSC_SCAN, input->mscbit);
1233 }
1234
1235 return;
1236
1237 ignore:
1238 usage->type = 0;
1239 usage->code = 0;
1240 }
1241
1242 static void hidinput_handle_scroll(struct hid_usage *usage,
1243 struct input_dev *input,
1244 __s32 value)
1245 {
1246 int code;
1247 int hi_res, lo_res;
1248
1249 if (value == 0)
1250 return;
1251
1252 if (usage->code == REL_WHEEL_HI_RES)
1253 code = REL_WHEEL;
1254 else
1255 code = REL_HWHEEL;
1256
1257 /*
1258 * Windows reports one wheel click as value 120. Where a high-res
1259 * scroll wheel is present, a fraction of 120 is reported instead.
1260 * Our REL_WHEEL_HI_RES axis does the same because all HW must
1261 * adhere to the 120 expectation.
1262 */
1263 hi_res = value * 120/usage->resolution_multiplier;
1264
1265 usage->wheel_accumulated += hi_res;
1266 lo_res = usage->wheel_accumulated/120;
1267 if (lo_res)
1268 usage->wheel_accumulated -= lo_res * 120;
1269
1270 input_event(input, EV_REL, code, lo_res);
1271 input_event(input, EV_REL, usage->code, hi_res);
1272 }
1273
1274 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1275 {
1276 struct input_dev *input;
1277 unsigned *quirks = &hid->quirks;
1278
1279 if (!usage->type)
1280 return;
1281
1282 if (usage->type == EV_PWR) {
1283 hidinput_update_battery(hid, value);
1284 return;
1285 }
1286
1287 if (!field->hidinput)
1288 return;
1289
1290 input = field->hidinput->input;
1291
1292 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1293 int hat_dir = usage->hat_dir;
1294 if (!hat_dir)
1295 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1296 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1297 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
1298 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1299 return;
1300 }
1301
1302 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
1303 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
1304 return;
1305 }
1306
1307 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
1308 if (value) {
1309 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
1310 return;
1311 }
1312 input_event(input, usage->type, usage->code, 0);
1313 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
1314 return;
1315 }
1316
1317 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
1318 int a = field->logical_minimum;
1319 int b = field->logical_maximum;
1320 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
1321 }
1322
1323 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
1324 dbg_hid("Maximum Effects - %d\n",value);
1325 return;
1326 }
1327
1328 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
1329 dbg_hid("PID Pool Report\n");
1330 return;
1331 }
1332
1333 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1334 return;
1335
1336 if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES ||
1337 usage->code == REL_HWHEEL_HI_RES)) {
1338 hidinput_handle_scroll(usage, input, value);
1339 return;
1340 }
1341
1342 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1343 (usage->code == ABS_VOLUME)) {
1344 int count = abs(value);
1345 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1346 int i;
1347
1348 for (i = 0; i < count; i++) {
1349 input_event(input, EV_KEY, direction, 1);
1350 input_sync(input);
1351 input_event(input, EV_KEY, direction, 0);
1352 input_sync(input);
1353 }
1354 return;
1355 }
1356
1357 /*
1358 * Ignore out-of-range values as per HID specification,
1359 * section 5.10 and 6.2.25, when NULL state bit is present.
1360 * When it's not, clamp the value to match Microsoft's input
1361 * driver as mentioned in "Required HID usages for digitizers":
1362 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
1363 *
1364 * The logical_minimum < logical_maximum check is done so that we
1365 * don't unintentionally discard values sent by devices which
1366 * don't specify logical min and max.
1367 */
1368 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1369 (field->logical_minimum < field->logical_maximum)) {
1370 if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
1371 (value < field->logical_minimum ||
1372 value > field->logical_maximum)) {
1373 dbg_hid("Ignoring out-of-range value %x\n", value);
1374 return;
1375 }
1376 value = clamp(value,
1377 field->logical_minimum,
1378 field->logical_maximum);
1379 }
1380
1381 /*
1382 * Ignore reports for absolute data if the data didn't change. This is
1383 * not only an optimization but also fixes 'dead' key reports. Some
1384 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1385 * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1386 * can only have one of them physically available. The 'dead' keys
1387 * report constant 0. As all map to the same keycode, they'd confuse
1388 * the input layer. If we filter the 'dead' keys on the HID level, we
1389 * skip the keycode translation and only forward real events.
1390 */
1391 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1392 HID_MAIN_ITEM_BUFFERED_BYTE)) &&
1393 (field->flags & HID_MAIN_ITEM_VARIABLE) &&
1394 usage->usage_index < field->maxusage &&
1395 value == field->value[usage->usage_index])
1396 return;
1397
1398 /* report the usage code as scancode if the key status has changed */
1399 if (usage->type == EV_KEY &&
1400 (!test_bit(usage->code, input->key)) == value)
1401 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1402
1403 input_event(input, usage->type, usage->code, value);
1404
1405 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1406 usage->type == EV_KEY && value) {
1407 input_sync(input);
1408 input_event(input, usage->type, usage->code, 0);
1409 }
1410 }
1411
1412 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1413 {
1414 struct hid_input *hidinput;
1415
1416 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1417 return;
1418
1419 list_for_each_entry(hidinput, &hid->inputs, list)
1420 input_sync(hidinput->input);
1421 }
1422 EXPORT_SYMBOL_GPL(hidinput_report_event);
1423
1424 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1425 {
1426 struct hid_report *report;
1427 int i, j;
1428
1429 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1430 for (i = 0; i < report->maxfield; i++) {
1431 *field = report->field[i];
1432 for (j = 0; j < (*field)->maxusage; j++)
1433 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1434 return j;
1435 }
1436 }
1437 return -1;
1438 }
1439 EXPORT_SYMBOL_GPL(hidinput_find_field);
1440
1441 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1442 {
1443 struct hid_report *report;
1444 struct hid_field *field;
1445 int i, j;
1446
1447 list_for_each_entry(report,
1448 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1449 list) {
1450 for (i = 0; i < report->maxfield; i++) {
1451 field = report->field[i];
1452 for (j = 0; j < field->maxusage; j++)
1453 if (field->usage[j].type == EV_LED)
1454 return field;
1455 }
1456 }
1457 return NULL;
1458 }
1459 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1460
1461 unsigned int hidinput_count_leds(struct hid_device *hid)
1462 {
1463 struct hid_report *report;
1464 struct hid_field *field;
1465 int i, j;
1466 unsigned int count = 0;
1467
1468 list_for_each_entry(report,
1469 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1470 list) {
1471 for (i = 0; i < report->maxfield; i++) {
1472 field = report->field[i];
1473 for (j = 0; j < field->maxusage; j++)
1474 if (field->usage[j].type == EV_LED &&
1475 field->value[j])
1476 count += 1;
1477 }
1478 }
1479 return count;
1480 }
1481 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1482
1483 static void hidinput_led_worker(struct work_struct *work)
1484 {
1485 struct hid_device *hid = container_of(work, struct hid_device,
1486 led_work);
1487 struct hid_field *field;
1488 struct hid_report *report;
1489 int ret;
1490 u32 len;
1491 __u8 *buf;
1492
1493 field = hidinput_get_led_field(hid);
1494 if (!field)
1495 return;
1496
1497 /*
1498 * field->report is accessed unlocked regarding HID core. So there might
1499 * be another incoming SET-LED request from user-space, which changes
1500 * the LED state while we assemble our outgoing buffer. However, this
1501 * doesn't matter as hid_output_report() correctly converts it into a
1502 * boolean value no matter what information is currently set on the LED
1503 * field (even garbage). So the remote device will always get a valid
1504 * request.
1505 * And in case we send a wrong value, a next led worker is spawned
1506 * for every SET-LED request so the following worker will send the
1507 * correct value, guaranteed!
1508 */
1509
1510 report = field->report;
1511
1512 /* use custom SET_REPORT request if possible (asynchronous) */
1513 if (hid->ll_driver->request)
1514 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1515
1516 /* fall back to generic raw-output-report */
1517 len = hid_report_len(report);
1518 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1519 if (!buf)
1520 return;
1521
1522 hid_output_report(report, buf);
1523 /* synchronous output report */
1524 ret = hid_hw_output_report(hid, buf, len);
1525 if (ret == -ENOSYS)
1526 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1527 HID_REQ_SET_REPORT);
1528 kfree(buf);
1529 }
1530
1531 static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1532 unsigned int code, int value)
1533 {
1534 struct hid_device *hid = input_get_drvdata(dev);
1535 struct hid_field *field;
1536 int offset;
1537
1538 if (type == EV_FF)
1539 return input_ff_event(dev, type, code, value);
1540
1541 if (type != EV_LED)
1542 return -1;
1543
1544 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1545 hid_warn(dev, "event field not found\n");
1546 return -1;
1547 }
1548
1549 hid_set_field(field, offset, value);
1550
1551 schedule_work(&hid->led_work);
1552 return 0;
1553 }
1554
1555 static int hidinput_open(struct input_dev *dev)
1556 {
1557 struct hid_device *hid = input_get_drvdata(dev);
1558
1559 return hid_hw_open(hid);
1560 }
1561
1562 static void hidinput_close(struct input_dev *dev)
1563 {
1564 struct hid_device *hid = input_get_drvdata(dev);
1565
1566 hid_hw_close(hid);
1567 }
1568
1569 static bool __hidinput_change_resolution_multipliers(struct hid_device *hid,
1570 struct hid_report *report, bool use_logical_max)
1571 {
1572 struct hid_usage *usage;
1573 bool update_needed = false;
1574 bool get_report_completed = false;
1575 int i, j;
1576
1577 if (report->maxfield == 0)
1578 return false;
1579
1580 for (i = 0; i < report->maxfield; i++) {
1581 __s32 value = use_logical_max ?
1582 report->field[i]->logical_maximum :
1583 report->field[i]->logical_minimum;
1584
1585 /* There is no good reason for a Resolution
1586 * Multiplier to have a count other than 1.
1587 * Ignore that case.
1588 */
1589 if (report->field[i]->report_count != 1)
1590 continue;
1591
1592 for (j = 0; j < report->field[i]->maxusage; j++) {
1593 usage = &report->field[i]->usage[j];
1594
1595 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER)
1596 continue;
1597
1598 /*
1599 * If we have more than one feature within this
1600 * report we need to fill in the bits from the
1601 * others before we can overwrite the ones for the
1602 * Resolution Multiplier.
1603 *
1604 * But if we're not allowed to read from the device,
1605 * we just bail. Such a device should not exist
1606 * anyway.
1607 */
1608 if (!get_report_completed && report->maxfield > 1) {
1609 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS)
1610 return update_needed;
1611
1612 hid_hw_request(hid, report, HID_REQ_GET_REPORT);
1613 hid_hw_wait(hid);
1614 get_report_completed = true;
1615 }
1616
1617 report->field[i]->value[j] = value;
1618 update_needed = true;
1619 }
1620 }
1621
1622 return update_needed;
1623 }
1624
1625 static void hidinput_change_resolution_multipliers(struct hid_device *hid)
1626 {
1627 struct hid_report_enum *rep_enum;
1628 struct hid_report *rep;
1629 int ret;
1630
1631 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1632 list_for_each_entry(rep, &rep_enum->report_list, list) {
1633 bool update_needed = __hidinput_change_resolution_multipliers(hid,
1634 rep, true);
1635
1636 if (update_needed) {
1637 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT);
1638 if (ret) {
1639 __hidinput_change_resolution_multipliers(hid,
1640 rep, false);
1641 return;
1642 }
1643 }
1644 }
1645
1646 /* refresh our structs */
1647 hid_setup_resolution_multiplier(hid);
1648 }
1649
1650 static void report_features(struct hid_device *hid)
1651 {
1652 struct hid_driver *drv = hid->driver;
1653 struct hid_report_enum *rep_enum;
1654 struct hid_report *rep;
1655 struct hid_usage *usage;
1656 int i, j;
1657
1658 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1659 list_for_each_entry(rep, &rep_enum->report_list, list)
1660 for (i = 0; i < rep->maxfield; i++) {
1661 /* Ignore if report count is out of bounds. */
1662 if (rep->field[i]->report_count < 1)
1663 continue;
1664
1665 for (j = 0; j < rep->field[i]->maxusage; j++) {
1666 usage = &rep->field[i]->usage[j];
1667
1668 /* Verify if Battery Strength feature is available */
1669 if (usage->hid == HID_DC_BATTERYSTRENGTH)
1670 hidinput_setup_battery(hid, HID_FEATURE_REPORT,
1671 rep->field[i]);
1672
1673 if (drv->feature_mapping)
1674 drv->feature_mapping(hid, rep->field[i], usage);
1675 }
1676 }
1677 }
1678
1679 static struct hid_input *hidinput_allocate(struct hid_device *hid,
1680 unsigned int application)
1681 {
1682 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1683 struct input_dev *input_dev = input_allocate_device();
1684 const char *suffix = NULL;
1685 size_t suffix_len, name_len;
1686
1687 if (!hidinput || !input_dev)
1688 goto fail;
1689
1690 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&
1691 hid->maxapplication > 1) {
1692 switch (application) {
1693 case HID_GD_KEYBOARD:
1694 suffix = "Keyboard";
1695 break;
1696 case HID_GD_KEYPAD:
1697 suffix = "Keypad";
1698 break;
1699 case HID_GD_MOUSE:
1700 suffix = "Mouse";
1701 break;
1702 case HID_DG_STYLUS:
1703 suffix = "Pen";
1704 break;
1705 case HID_DG_TOUCHSCREEN:
1706 suffix = "Touchscreen";
1707 break;
1708 case HID_DG_TOUCHPAD:
1709 suffix = "Touchpad";
1710 break;
1711 case HID_GD_SYSTEM_CONTROL:
1712 suffix = "System Control";
1713 break;
1714 case HID_CP_CONSUMER_CONTROL:
1715 suffix = "Consumer Control";
1716 break;
1717 case HID_GD_WIRELESS_RADIO_CTLS:
1718 suffix = "Wireless Radio Control";
1719 break;
1720 case HID_GD_SYSTEM_MULTIAXIS:
1721 suffix = "System Multi Axis";
1722 break;
1723 default:
1724 break;
1725 }
1726 }
1727
1728 if (suffix) {
1729 name_len = strlen(hid->name);
1730 suffix_len = strlen(suffix);
1731 if ((name_len < suffix_len) ||
1732 strcmp(hid->name + name_len - suffix_len, suffix)) {
1733 hidinput->name = kasprintf(GFP_KERNEL, "%s %s",
1734 hid->name, suffix);
1735 if (!hidinput->name)
1736 goto fail;
1737 }
1738 }
1739
1740 input_set_drvdata(input_dev, hid);
1741 input_dev->event = hidinput_input_event;
1742 input_dev->open = hidinput_open;
1743 input_dev->close = hidinput_close;
1744 input_dev->setkeycode = hidinput_setkeycode;
1745 input_dev->getkeycode = hidinput_getkeycode;
1746
1747 input_dev->name = hidinput->name ? hidinput->name : hid->name;
1748 input_dev->phys = hid->phys;
1749 input_dev->uniq = hid->uniq;
1750 input_dev->id.bustype = hid->bus;
1751 input_dev->id.vendor = hid->vendor;
1752 input_dev->id.product = hid->product;
1753 input_dev->id.version = hid->version;
1754 input_dev->dev.parent = &hid->dev;
1755
1756 hidinput->input = input_dev;
1757 hidinput->application = application;
1758 list_add_tail(&hidinput->list, &hid->inputs);
1759
1760 INIT_LIST_HEAD(&hidinput->reports);
1761
1762 return hidinput;
1763
1764 fail:
1765 kfree(hidinput);
1766 input_free_device(input_dev);
1767 hid_err(hid, "Out of memory during hid input probe\n");
1768 return NULL;
1769 }
1770
1771 static bool hidinput_has_been_populated(struct hid_input *hidinput)
1772 {
1773 int i;
1774 unsigned long r = 0;
1775
1776 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
1777 r |= hidinput->input->evbit[i];
1778
1779 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
1780 r |= hidinput->input->keybit[i];
1781
1782 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
1783 r |= hidinput->input->relbit[i];
1784
1785 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
1786 r |= hidinput->input->absbit[i];
1787
1788 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
1789 r |= hidinput->input->mscbit[i];
1790
1791 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
1792 r |= hidinput->input->ledbit[i];
1793
1794 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
1795 r |= hidinput->input->sndbit[i];
1796
1797 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
1798 r |= hidinput->input->ffbit[i];
1799
1800 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
1801 r |= hidinput->input->swbit[i];
1802
1803 return !!r;
1804 }
1805
1806 static void hidinput_cleanup_hidinput(struct hid_device *hid,
1807 struct hid_input *hidinput)
1808 {
1809 struct hid_report *report;
1810 int i, k;
1811
1812 list_del(&hidinput->list);
1813 input_free_device(hidinput->input);
1814 kfree(hidinput->name);
1815
1816 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1817 if (k == HID_OUTPUT_REPORT &&
1818 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1819 continue;
1820
1821 list_for_each_entry(report, &hid->report_enum[k].report_list,
1822 list) {
1823
1824 for (i = 0; i < report->maxfield; i++)
1825 if (report->field[i]->hidinput == hidinput)
1826 report->field[i]->hidinput = NULL;
1827 }
1828 }
1829
1830 kfree(hidinput);
1831 }
1832
1833 static struct hid_input *hidinput_match(struct hid_report *report)
1834 {
1835 struct hid_device *hid = report->device;
1836 struct hid_input *hidinput;
1837
1838 list_for_each_entry(hidinput, &hid->inputs, list) {
1839 if (hidinput->report &&
1840 hidinput->report->id == report->id)
1841 return hidinput;
1842 }
1843
1844 return NULL;
1845 }
1846
1847 static struct hid_input *hidinput_match_application(struct hid_report *report)
1848 {
1849 struct hid_device *hid = report->device;
1850 struct hid_input *hidinput;
1851
1852 list_for_each_entry(hidinput, &hid->inputs, list) {
1853 if (hidinput->application == report->application)
1854 return hidinput;
1855 }
1856
1857 return NULL;
1858 }
1859
1860 static inline void hidinput_configure_usages(struct hid_input *hidinput,
1861 struct hid_report *report)
1862 {
1863 int i, j;
1864
1865 for (i = 0; i < report->maxfield; i++)
1866 for (j = 0; j < report->field[i]->maxusage; j++)
1867 hidinput_configure_usage(hidinput, report->field[i],
1868 report->field[i]->usage + j);
1869 }
1870
1871 /*
1872 * Register the input device; print a message.
1873 * Configure the input layer interface
1874 * Read all reports and initialize the absolute field values.
1875 */
1876
1877 int hidinput_connect(struct hid_device *hid, unsigned int force)
1878 {
1879 struct hid_driver *drv = hid->driver;
1880 struct hid_report *report;
1881 struct hid_input *next, *hidinput = NULL;
1882 unsigned int application;
1883 int i, k;
1884
1885 INIT_LIST_HEAD(&hid->inputs);
1886 INIT_WORK(&hid->led_work, hidinput_led_worker);
1887
1888 hid->status &= ~HID_STAT_DUP_DETECTED;
1889
1890 if (!force) {
1891 for (i = 0; i < hid->maxcollection; i++) {
1892 struct hid_collection *col = &hid->collection[i];
1893 if (col->type == HID_COLLECTION_APPLICATION ||
1894 col->type == HID_COLLECTION_PHYSICAL)
1895 if (IS_INPUT_APPLICATION(col->usage))
1896 break;
1897 }
1898
1899 if (i == hid->maxcollection)
1900 return -1;
1901 }
1902
1903 report_features(hid);
1904
1905 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1906 if (k == HID_OUTPUT_REPORT &&
1907 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1908 continue;
1909
1910 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1911
1912 if (!report->maxfield)
1913 continue;
1914
1915 application = report->application;
1916
1917 /*
1918 * Find the previous hidinput report attached
1919 * to this report id.
1920 */
1921 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
1922 hidinput = hidinput_match(report);
1923 else if (hid->maxapplication > 1 &&
1924 (hid->quirks & HID_QUIRK_INPUT_PER_APP))
1925 hidinput = hidinput_match_application(report);
1926
1927 if (!hidinput) {
1928 hidinput = hidinput_allocate(hid, application);
1929 if (!hidinput)
1930 goto out_unwind;
1931 }
1932
1933 hidinput_configure_usages(hidinput, report);
1934
1935 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
1936 hidinput->report = report;
1937
1938 list_add_tail(&report->hidinput_list,
1939 &hidinput->reports);
1940 }
1941 }
1942
1943 hidinput_change_resolution_multipliers(hid);
1944
1945 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1946 if (drv->input_configured &&
1947 drv->input_configured(hid, hidinput))
1948 goto out_unwind;
1949
1950 if (!hidinput_has_been_populated(hidinput)) {
1951 /* no need to register an input device not populated */
1952 hidinput_cleanup_hidinput(hid, hidinput);
1953 continue;
1954 }
1955
1956 if (input_register_device(hidinput->input))
1957 goto out_unwind;
1958 hidinput->registered = true;
1959 }
1960
1961 if (list_empty(&hid->inputs)) {
1962 hid_err(hid, "No inputs registered, leaving\n");
1963 goto out_unwind;
1964 }
1965
1966 if (hid->status & HID_STAT_DUP_DETECTED)
1967 hid_dbg(hid,
1968 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n");
1969
1970 return 0;
1971
1972 out_unwind:
1973 /* unwind the ones we already registered */
1974 hidinput_disconnect(hid);
1975
1976 return -1;
1977 }
1978 EXPORT_SYMBOL_GPL(hidinput_connect);
1979
1980 void hidinput_disconnect(struct hid_device *hid)
1981 {
1982 struct hid_input *hidinput, *next;
1983
1984 hidinput_cleanup_battery(hid);
1985
1986 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1987 list_del(&hidinput->list);
1988 if (hidinput->registered)
1989 input_unregister_device(hidinput->input);
1990 else
1991 input_free_device(hidinput->input);
1992 kfree(hidinput->name);
1993 kfree(hidinput);
1994 }
1995
1996 /* led_work is spawned by input_dev callbacks, but doesn't access the
1997 * parent input_dev at all. Once all input devices are removed, we
1998 * know that led_work will never get restarted, so we can cancel it
1999 * synchronously and are safe. */
2000 cancel_work_sync(&hid->led_work);
2001 }
2002 EXPORT_SYMBOL_GPL(hidinput_disconnect);
Linux with added FPC-III support