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net: DCB: Validate DCB_ATTR_DCB_BUFFER argument
[linux/fpc-iii.git] / drivers / hid / hid-input.c
blobe3d475f4baf6637377cc96890fd8ea535586c94f
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 {}
323 };
324
325 static unsigned find_battery_quirk(struct hid_device *hdev)
326 {
327 unsigned quirks = 0;
328 const struct hid_device_id *match;
329
330 match = hid_match_id(hdev, hid_battery_quirks);
331 if (match != NULL)
332 quirks = match->driver_data;
333
334 return quirks;
335 }
336
337 static int hidinput_scale_battery_capacity(struct hid_device *dev,
338 int value)
339 {
340 if (dev->battery_min < dev->battery_max &&
341 value >= dev->battery_min && value <= dev->battery_max)
342 value = ((value - dev->battery_min) * 100) /
343 (dev->battery_max - dev->battery_min);
344
345 return value;
346 }
347
348 static int hidinput_query_battery_capacity(struct hid_device *dev)
349 {
350 u8 *buf;
351 int ret;
352
353 buf = kmalloc(4, GFP_KERNEL);
354 if (!buf)
355 return -ENOMEM;
356
357 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4,
358 dev->battery_report_type, HID_REQ_GET_REPORT);
359 if (ret < 2) {
360 kfree(buf);
361 return -ENODATA;
362 }
363
364 ret = hidinput_scale_battery_capacity(dev, buf[1]);
365 kfree(buf);
366 return ret;
367 }
368
369 static int hidinput_get_battery_property(struct power_supply *psy,
370 enum power_supply_property prop,
371 union power_supply_propval *val)
372 {
373 struct hid_device *dev = power_supply_get_drvdata(psy);
374 int value;
375 int ret = 0;
376
377 switch (prop) {
378 case POWER_SUPPLY_PROP_PRESENT:
379 case POWER_SUPPLY_PROP_ONLINE:
380 val->intval = 1;
381 break;
382
383 case POWER_SUPPLY_PROP_CAPACITY:
384 if (dev->battery_status != HID_BATTERY_REPORTED &&
385 !dev->battery_avoid_query) {
386 value = hidinput_query_battery_capacity(dev);
387 if (value < 0)
388 return value;
389 } else {
390 value = dev->battery_capacity;
391 }
392
393 val->intval = value;
394 break;
395
396 case POWER_SUPPLY_PROP_MODEL_NAME:
397 val->strval = dev->name;
398 break;
399
400 case POWER_SUPPLY_PROP_STATUS:
401 if (dev->battery_status != HID_BATTERY_REPORTED &&
402 !dev->battery_avoid_query) {
403 value = hidinput_query_battery_capacity(dev);
404 if (value < 0)
405 return value;
406
407 dev->battery_capacity = value;
408 dev->battery_status = HID_BATTERY_QUERIED;
409 }
410
411 if (dev->battery_status == HID_BATTERY_UNKNOWN)
412 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
413 else if (dev->battery_capacity == 100)
414 val->intval = POWER_SUPPLY_STATUS_FULL;
415 else
416 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
417 break;
418
419 case POWER_SUPPLY_PROP_SCOPE:
420 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
421 break;
422
423 default:
424 ret = -EINVAL;
425 break;
426 }
427
428 return ret;
429 }
430
431 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
432 {
433 struct power_supply_desc *psy_desc;
434 struct power_supply_config psy_cfg = { .drv_data = dev, };
435 unsigned quirks;
436 s32 min, max;
437 int error;
438
439 if (dev->battery)
440 return 0; /* already initialized? */
441
442 quirks = find_battery_quirk(dev);
443
444 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
445 dev->bus, dev->vendor, dev->product, dev->version, quirks);
446
447 if (quirks & HID_BATTERY_QUIRK_IGNORE)
448 return 0;
449
450 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
451 if (!psy_desc)
452 return -ENOMEM;
453
454 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery",
455 strlen(dev->uniq) ?
456 dev->uniq : dev_name(&dev->dev));
457 if (!psy_desc->name) {
458 error = -ENOMEM;
459 goto err_free_mem;
460 }
461
462 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
463 psy_desc->properties = hidinput_battery_props;
464 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
465 psy_desc->use_for_apm = 0;
466 psy_desc->get_property = hidinput_get_battery_property;
467
468 min = field->logical_minimum;
469 max = field->logical_maximum;
470
471 if (quirks & HID_BATTERY_QUIRK_PERCENT) {
472 min = 0;
473 max = 100;
474 }
475
476 if (quirks & HID_BATTERY_QUIRK_FEATURE)
477 report_type = HID_FEATURE_REPORT;
478
479 dev->battery_min = min;
480 dev->battery_max = max;
481 dev->battery_report_type = report_type;
482 dev->battery_report_id = field->report->id;
483
484 /*
485 * Stylus is normally not connected to the device and thus we
486 * can't query the device and get meaningful battery strength.
487 * We have to wait for the device to report it on its own.
488 */
489 dev->battery_avoid_query = report_type == HID_INPUT_REPORT &&
490 field->physical == HID_DG_STYLUS;
491
492 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
493 if (IS_ERR(dev->battery)) {
494 error = PTR_ERR(dev->battery);
495 hid_warn(dev, "can't register power supply: %d\n", error);
496 goto err_free_name;
497 }
498
499 power_supply_powers(dev->battery, &dev->dev);
500 return 0;
501
502 err_free_name:
503 kfree(psy_desc->name);
504 err_free_mem:
505 kfree(psy_desc);
506 dev->battery = NULL;
507 return error;
508 }
509
510 static void hidinput_cleanup_battery(struct hid_device *dev)
511 {
512 const struct power_supply_desc *psy_desc;
513
514 if (!dev->battery)
515 return;
516
517 psy_desc = dev->battery->desc;
518 power_supply_unregister(dev->battery);
519 kfree(psy_desc->name);
520 kfree(psy_desc);
521 dev->battery = NULL;
522 }
523
524 static void hidinput_update_battery(struct hid_device *dev, int value)
525 {
526 int capacity;
527
528 if (!dev->battery)
529 return;
530
531 if (value == 0 || value < dev->battery_min || value > dev->battery_max)
532 return;
533
534 capacity = hidinput_scale_battery_capacity(dev, value);
535
536 if (dev->battery_status != HID_BATTERY_REPORTED ||
537 capacity != dev->battery_capacity) {
538 dev->battery_capacity = capacity;
539 dev->battery_status = HID_BATTERY_REPORTED;
540 power_supply_changed(dev->battery);
541 }
542 }
543 #else /* !CONFIG_HID_BATTERY_STRENGTH */
544 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
545 struct hid_field *field)
546 {
547 return 0;
548 }
549
550 static void hidinput_cleanup_battery(struct hid_device *dev)
551 {
552 }
553
554 static void hidinput_update_battery(struct hid_device *dev, int value)
555 {
556 }
557 #endif /* CONFIG_HID_BATTERY_STRENGTH */
558
559 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
560 struct hid_usage *usage)
561 {
562 struct input_dev *input = hidinput->input;
563 struct hid_device *device = input_get_drvdata(input);
564 int max = 0, code;
565 unsigned long *bit = NULL;
566
567 field->hidinput = hidinput;
568
569 if (field->flags & HID_MAIN_ITEM_CONSTANT)
570 goto ignore;
571
572 /* Ignore if report count is out of bounds. */
573 if (field->report_count < 1)
574 goto ignore;
575
576 /* only LED usages are supported in output fields */
577 if (field->report_type == HID_OUTPUT_REPORT &&
578 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
579 goto ignore;
580 }
581
582 if (device->driver->input_mapping) {
583 int ret = device->driver->input_mapping(device, hidinput, field,
584 usage, &bit, &max);
585 if (ret > 0)
586 goto mapped;
587 if (ret < 0)
588 goto ignore;
589 }
590
591 switch (usage->hid & HID_USAGE_PAGE) {
592 case HID_UP_UNDEFINED:
593 goto ignore;
594
595 case HID_UP_KEYBOARD:
596 set_bit(EV_REP, input->evbit);
597
598 if ((usage->hid & HID_USAGE) < 256) {
599 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
600 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
601 } else
602 map_key(KEY_UNKNOWN);
603
604 break;
605
606 case HID_UP_BUTTON:
607 code = ((usage->hid - 1) & HID_USAGE);
608
609 switch (field->application) {
610 case HID_GD_MOUSE:
611 case HID_GD_POINTER: code += BTN_MOUSE; break;
612 case HID_GD_JOYSTICK:
613 if (code <= 0xf)
614 code += BTN_JOYSTICK;
615 else
616 code += BTN_TRIGGER_HAPPY - 0x10;
617 break;
618 case HID_GD_GAMEPAD:
619 if (code <= 0xf)
620 code += BTN_GAMEPAD;
621 else
622 code += BTN_TRIGGER_HAPPY - 0x10;
623 break;
624 default:
625 switch (field->physical) {
626 case HID_GD_MOUSE:
627 case HID_GD_POINTER: code += BTN_MOUSE; break;
628 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
629 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
630 default: code += BTN_MISC;
631 }
632 }
633
634 map_key(code);
635 break;
636
637 case HID_UP_SIMULATION:
638 switch (usage->hid & 0xffff) {
639 case 0xba: map_abs(ABS_RUDDER); break;
640 case 0xbb: map_abs(ABS_THROTTLE); break;
641 case 0xc4: map_abs(ABS_GAS); break;
642 case 0xc5: map_abs(ABS_BRAKE); break;
643 case 0xc8: map_abs(ABS_WHEEL); break;
644 default: goto ignore;
645 }
646 break;
647
648 case HID_UP_GENDESK:
649 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
650 switch (usage->hid & 0xf) {
651 case 0x1: map_key_clear(KEY_POWER); break;
652 case 0x2: map_key_clear(KEY_SLEEP); break;
653 case 0x3: map_key_clear(KEY_WAKEUP); break;
654 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
655 case 0x5: map_key_clear(KEY_MENU); break;
656 case 0x6: map_key_clear(KEY_PROG1); break;
657 case 0x7: map_key_clear(KEY_HELP); break;
658 case 0x8: map_key_clear(KEY_EXIT); break;
659 case 0x9: map_key_clear(KEY_SELECT); break;
660 case 0xa: map_key_clear(KEY_RIGHT); break;
661 case 0xb: map_key_clear(KEY_LEFT); break;
662 case 0xc: map_key_clear(KEY_UP); break;
663 case 0xd: map_key_clear(KEY_DOWN); break;
664 case 0xe: map_key_clear(KEY_POWER2); break;
665 case 0xf: map_key_clear(KEY_RESTART); break;
666 default: goto unknown;
667 }
668 break;
669 }
670
671 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */
672 switch (usage->hid & 0xf) {
673 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break;
674 default: goto ignore;
675 }
676 break;
677 }
678
679 /*
680 * Some lazy vendors declare 255 usages for System Control,
681 * leading to the creation of ABS_X|Y axis and too many others.
682 * It wouldn't be a problem if joydev doesn't consider the
683 * device as a joystick then.
684 */
685 if (field->application == HID_GD_SYSTEM_CONTROL)
686 goto ignore;
687
688 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
689 switch (usage->hid) {
690 case HID_GD_UP: usage->hat_dir = 1; break;
691 case HID_GD_DOWN: usage->hat_dir = 5; break;
692 case HID_GD_RIGHT: usage->hat_dir = 3; break;
693 case HID_GD_LEFT: usage->hat_dir = 7; break;
694 default: goto unknown;
695 }
696 if (field->dpad) {
697 map_abs(field->dpad);
698 goto ignore;
699 }
700 map_abs(ABS_HAT0X);
701 break;
702 }
703
704 switch (usage->hid) {
705 /* These usage IDs map directly to the usage codes. */
706 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
707 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
708 if (field->flags & HID_MAIN_ITEM_RELATIVE)
709 map_rel(usage->hid & 0xf);
710 else
711 map_abs_clear(usage->hid & 0xf);
712 break;
713
714 case HID_GD_WHEEL:
715 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
716 set_bit(REL_WHEEL, input->relbit);
717 map_rel(REL_WHEEL_HI_RES);
718 } else {
719 map_abs(usage->hid & 0xf);
720 }
721 break;
722 case HID_GD_SLIDER: case HID_GD_DIAL:
723 if (field->flags & HID_MAIN_ITEM_RELATIVE)
724 map_rel(usage->hid & 0xf);
725 else
726 map_abs(usage->hid & 0xf);
727 break;
728
729 case HID_GD_HATSWITCH:
730 usage->hat_min = field->logical_minimum;
731 usage->hat_max = field->logical_maximum;
732 map_abs(ABS_HAT0X);
733 break;
734
735 case HID_GD_START: map_key_clear(BTN_START); break;
736 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
737
738 case HID_GD_RFKILL_BTN:
739 /* MS wireless radio ctl extension, also check CA */
740 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
741 map_key_clear(KEY_RFKILL);
742 /* We need to simulate the btn release */
743 field->flags |= HID_MAIN_ITEM_RELATIVE;
744 break;
745 }
746
747 default: goto unknown;
748 }
749
750 break;
751
752 case HID_UP_LED:
753 switch (usage->hid & 0xffff) { /* HID-Value: */
754 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
755 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
756 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
757 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
758 case 0x05: map_led (LED_KANA); break; /* "Kana" */
759 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
760 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
761 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
762 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
763 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
764 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
765
766 default: goto ignore;
767 }
768 break;
769
770 case HID_UP_DIGITIZER:
771 if ((field->application & 0xff) == 0x01) /* Digitizer */
772 __set_bit(INPUT_PROP_POINTER, input->propbit);
773 else if ((field->application & 0xff) == 0x02) /* Pen */
774 __set_bit(INPUT_PROP_DIRECT, input->propbit);
775
776 switch (usage->hid & 0xff) {
777 case 0x00: /* Undefined */
778 goto ignore;
779
780 case 0x30: /* TipPressure */
781 if (!test_bit(BTN_TOUCH, input->keybit)) {
782 device->quirks |= HID_QUIRK_NOTOUCH;
783 set_bit(EV_KEY, input->evbit);
784 set_bit(BTN_TOUCH, input->keybit);
785 }
786 map_abs_clear(ABS_PRESSURE);
787 break;
788
789 case 0x32: /* InRange */
790 switch (field->physical & 0xff) {
791 case 0x21: map_key(BTN_TOOL_MOUSE); break;
792 case 0x22: map_key(BTN_TOOL_FINGER); break;
793 default: map_key(BTN_TOOL_PEN); break;
794 }
795 break;
796
797 case 0x3b: /* Battery Strength */
798 hidinput_setup_battery(device, HID_INPUT_REPORT, field);
799 usage->type = EV_PWR;
800 goto ignore;
801
802 case 0x3c: /* Invert */
803 map_key_clear(BTN_TOOL_RUBBER);
804 break;
805
806 case 0x3d: /* X Tilt */
807 map_abs_clear(ABS_TILT_X);
808 break;
809
810 case 0x3e: /* Y Tilt */
811 map_abs_clear(ABS_TILT_Y);
812 break;
813
814 case 0x33: /* Touch */
815 case 0x42: /* TipSwitch */
816 case 0x43: /* TipSwitch2 */
817 device->quirks &= ~HID_QUIRK_NOTOUCH;
818 map_key_clear(BTN_TOUCH);
819 break;
820
821 case 0x44: /* BarrelSwitch */
822 map_key_clear(BTN_STYLUS);
823 break;
824
825 case 0x45: /* ERASER */
826 /*
827 * This event is reported when eraser tip touches the surface.
828 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when
829 * tool gets in proximity.
830 */
831 map_key_clear(BTN_TOUCH);
832 break;
833
834 case 0x46: /* TabletPick */
835 case 0x5a: /* SecondaryBarrelSwitch */
836 map_key_clear(BTN_STYLUS2);
837 break;
838
839 case 0x5b: /* TransducerSerialNumber */
840 usage->type = EV_MSC;
841 usage->code = MSC_SERIAL;
842 bit = input->mscbit;
843 max = MSC_MAX;
844 break;
845
846 default: goto unknown;
847 }
848 break;
849
850 case HID_UP_TELEPHONY:
851 switch (usage->hid & HID_USAGE) {
852 case 0x2f: map_key_clear(KEY_MICMUTE); break;
853 case 0xb0: map_key_clear(KEY_NUMERIC_0); break;
854 case 0xb1: map_key_clear(KEY_NUMERIC_1); break;
855 case 0xb2: map_key_clear(KEY_NUMERIC_2); break;
856 case 0xb3: map_key_clear(KEY_NUMERIC_3); break;
857 case 0xb4: map_key_clear(KEY_NUMERIC_4); break;
858 case 0xb5: map_key_clear(KEY_NUMERIC_5); break;
859 case 0xb6: map_key_clear(KEY_NUMERIC_6); break;
860 case 0xb7: map_key_clear(KEY_NUMERIC_7); break;
861 case 0xb8: map_key_clear(KEY_NUMERIC_8); break;
862 case 0xb9: map_key_clear(KEY_NUMERIC_9); break;
863 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;
864 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;
865 case 0xbc: map_key_clear(KEY_NUMERIC_A); break;
866 case 0xbd: map_key_clear(KEY_NUMERIC_B); break;
867 case 0xbe: map_key_clear(KEY_NUMERIC_C); break;
868 case 0xbf: map_key_clear(KEY_NUMERIC_D); break;
869 default: goto ignore;
870 }
871 break;
872
873 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
874 switch (usage->hid & HID_USAGE) {
875 case 0x000: goto ignore;
876 case 0x030: map_key_clear(KEY_POWER); break;
877 case 0x031: map_key_clear(KEY_RESTART); break;
878 case 0x032: map_key_clear(KEY_SLEEP); break;
879 case 0x034: map_key_clear(KEY_SLEEP); break;
880 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
881 case 0x036: map_key_clear(BTN_MISC); break;
882
883 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
884 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
885 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
886 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
887 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
888 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
889 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
890 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
891 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
892
893 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
894 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
895 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
896 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
897 case 0x069: map_key_clear(KEY_RED); break;
898 case 0x06a: map_key_clear(KEY_GREEN); break;
899 case 0x06b: map_key_clear(KEY_BLUE); break;
900 case 0x06c: map_key_clear(KEY_YELLOW); break;
901 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break;
902
903 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
904 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
905 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
906 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
907 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
908 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
909
910 case 0x079: map_key_clear(KEY_KBDILLUMUP); break;
911 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break;
912 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break;
913
914 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
915 case 0x083: map_key_clear(KEY_LAST); break;
916 case 0x084: map_key_clear(KEY_ENTER); break;
917 case 0x088: map_key_clear(KEY_PC); break;
918 case 0x089: map_key_clear(KEY_TV); break;
919 case 0x08a: map_key_clear(KEY_WWW); break;
920 case 0x08b: map_key_clear(KEY_DVD); break;
921 case 0x08c: map_key_clear(KEY_PHONE); break;
922 case 0x08d: map_key_clear(KEY_PROGRAM); break;
923 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
924 case 0x08f: map_key_clear(KEY_GAMES); break;
925 case 0x090: map_key_clear(KEY_MEMO); break;
926 case 0x091: map_key_clear(KEY_CD); break;
927 case 0x092: map_key_clear(KEY_VCR); break;
928 case 0x093: map_key_clear(KEY_TUNER); break;
929 case 0x094: map_key_clear(KEY_EXIT); break;
930 case 0x095: map_key_clear(KEY_HELP); break;
931 case 0x096: map_key_clear(KEY_TAPE); break;
932 case 0x097: map_key_clear(KEY_TV2); break;
933 case 0x098: map_key_clear(KEY_SAT); break;
934 case 0x09a: map_key_clear(KEY_PVR); break;
935
936 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
937 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
938 case 0x0a0: map_key_clear(KEY_VCR2); break;
939
940 case 0x0b0: map_key_clear(KEY_PLAY); break;
941 case 0x0b1: map_key_clear(KEY_PAUSE); break;
942 case 0x0b2: map_key_clear(KEY_RECORD); break;
943 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
944 case 0x0b4: map_key_clear(KEY_REWIND); break;
945 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
946 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
947 case 0x0b7: map_key_clear(KEY_STOPCD); break;
948 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
949 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
950 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
951 case 0x0bf: map_key_clear(KEY_SLOW); break;
952
953 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
954 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
955 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
956 case 0x0e2: map_key_clear(KEY_MUTE); break;
957 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
958 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
959 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
960 case 0x0f5: map_key_clear(KEY_SLOW); break;
961
962 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
963 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
964 case 0x183: map_key_clear(KEY_CONFIG); break;
965 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
966 case 0x185: map_key_clear(KEY_EDITOR); break;
967 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
968 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
969 case 0x188: map_key_clear(KEY_PRESENTATION); break;
970 case 0x189: map_key_clear(KEY_DATABASE); break;
971 case 0x18a: map_key_clear(KEY_MAIL); break;
972 case 0x18b: map_key_clear(KEY_NEWS); break;
973 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
974 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
975 case 0x18e: map_key_clear(KEY_CALENDAR); break;
976 case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
977 case 0x190: map_key_clear(KEY_JOURNAL); break;
978 case 0x191: map_key_clear(KEY_FINANCE); break;
979 case 0x192: map_key_clear(KEY_CALC); break;
980 case 0x193: map_key_clear(KEY_PLAYER); break;
981 case 0x194: map_key_clear(KEY_FILE); break;
982 case 0x196: map_key_clear(KEY_WWW); break;
983 case 0x199: map_key_clear(KEY_CHAT); break;
984 case 0x19c: map_key_clear(KEY_LOGOFF); break;
985 case 0x19e: map_key_clear(KEY_COFFEE); break;
986 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
987 case 0x1a2: map_key_clear(KEY_APPSELECT); break;
988 case 0x1a3: map_key_clear(KEY_NEXT); break;
989 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
990 case 0x1a6: map_key_clear(KEY_HELP); break;
991 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
992 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
993 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
994 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
995 case 0x1b4: map_key_clear(KEY_FILE); break;
996 case 0x1b6: map_key_clear(KEY_IMAGES); break;
997 case 0x1b7: map_key_clear(KEY_AUDIO); break;
998 case 0x1b8: map_key_clear(KEY_VIDEO); break;
999 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
1000 case 0x1bd: map_key_clear(KEY_INFO); break;
1001 case 0x1cb: map_key_clear(KEY_ASSISTANT); break;
1002 case 0x201: map_key_clear(KEY_NEW); break;
1003 case 0x202: map_key_clear(KEY_OPEN); break;
1004 case 0x203: map_key_clear(KEY_CLOSE); break;
1005 case 0x204: map_key_clear(KEY_EXIT); break;
1006 case 0x207: map_key_clear(KEY_SAVE); break;
1007 case 0x208: map_key_clear(KEY_PRINT); break;
1008 case 0x209: map_key_clear(KEY_PROPS); break;
1009 case 0x21a: map_key_clear(KEY_UNDO); break;
1010 case 0x21b: map_key_clear(KEY_COPY); break;
1011 case 0x21c: map_key_clear(KEY_CUT); break;
1012 case 0x21d: map_key_clear(KEY_PASTE); break;
1013 case 0x21f: map_key_clear(KEY_FIND); break;
1014 case 0x221: map_key_clear(KEY_SEARCH); break;
1015 case 0x222: map_key_clear(KEY_GOTO); break;
1016 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
1017 case 0x224: map_key_clear(KEY_BACK); break;
1018 case 0x225: map_key_clear(KEY_FORWARD); break;
1019 case 0x226: map_key_clear(KEY_STOP); break;
1020 case 0x227: map_key_clear(KEY_REFRESH); break;
1021 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
1022 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
1023 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
1024 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
1025 case 0x232: map_key_clear(KEY_FULL_SCREEN); break;
1026 case 0x233: map_key_clear(KEY_SCROLLUP); break;
1027 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
1028 case 0x238: /* AC Pan */
1029 set_bit(REL_HWHEEL, input->relbit);
1030 map_rel(REL_HWHEEL_HI_RES);
1031 break;
1032 case 0x23d: map_key_clear(KEY_EDIT); break;
1033 case 0x25f: map_key_clear(KEY_CANCEL); break;
1034 case 0x269: map_key_clear(KEY_INSERT); break;
1035 case 0x26a: map_key_clear(KEY_DELETE); break;
1036 case 0x279: map_key_clear(KEY_REDO); break;
1037
1038 case 0x289: map_key_clear(KEY_REPLY); break;
1039 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
1040 case 0x28c: map_key_clear(KEY_SEND); break;
1041
1042 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break;
1043
1044 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
1045 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
1046 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
1047 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
1048 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
1049 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
1050
1051 case 0x29f: map_key_clear(KEY_SCALE); break;
1052
1053 default: map_key_clear(KEY_UNKNOWN);
1054 }
1055 break;
1056
1057 case HID_UP_GENDEVCTRLS:
1058 switch (usage->hid) {
1059 case HID_DC_BATTERYSTRENGTH:
1060 hidinput_setup_battery(device, HID_INPUT_REPORT, field);
1061 usage->type = EV_PWR;
1062 goto ignore;
1063 }
1064 goto unknown;
1065
1066 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
1067 set_bit(EV_REP, input->evbit);
1068 switch (usage->hid & HID_USAGE) {
1069 case 0x021: map_key_clear(KEY_PRINT); break;
1070 case 0x070: map_key_clear(KEY_HP); break;
1071 case 0x071: map_key_clear(KEY_CAMERA); break;
1072 case 0x072: map_key_clear(KEY_SOUND); break;
1073 case 0x073: map_key_clear(KEY_QUESTION); break;
1074 case 0x080: map_key_clear(KEY_EMAIL); break;
1075 case 0x081: map_key_clear(KEY_CHAT); break;
1076 case 0x082: map_key_clear(KEY_SEARCH); break;
1077 case 0x083: map_key_clear(KEY_CONNECT); break;
1078 case 0x084: map_key_clear(KEY_FINANCE); break;
1079 case 0x085: map_key_clear(KEY_SPORT); break;
1080 case 0x086: map_key_clear(KEY_SHOP); break;
1081 default: goto ignore;
1082 }
1083 break;
1084
1085 case HID_UP_HPVENDOR2:
1086 set_bit(EV_REP, input->evbit);
1087 switch (usage->hid & HID_USAGE) {
1088 case 0x001: map_key_clear(KEY_MICMUTE); break;
1089 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1090 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
1091 default: goto ignore;
1092 }
1093 break;
1094
1095 case HID_UP_MSVENDOR:
1096 goto ignore;
1097
1098 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
1099 set_bit(EV_REP, input->evbit);
1100 goto ignore;
1101
1102 case HID_UP_LOGIVENDOR:
1103 /* intentional fallback */
1104 case HID_UP_LOGIVENDOR2:
1105 /* intentional fallback */
1106 case HID_UP_LOGIVENDOR3:
1107 goto ignore;
1108
1109 case HID_UP_PID:
1110 switch (usage->hid & HID_USAGE) {
1111 case 0xa4: map_key_clear(BTN_DEAD); break;
1112 default: goto ignore;
1113 }
1114 break;
1115
1116 default:
1117 unknown:
1118 if (field->report_size == 1) {
1119 if (field->report->type == HID_OUTPUT_REPORT) {
1120 map_led(LED_MISC);
1121 break;
1122 }
1123 map_key(BTN_MISC);
1124 break;
1125 }
1126 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
1127 map_rel(REL_MISC);
1128 break;
1129 }
1130 map_abs(ABS_MISC);
1131 break;
1132 }
1133
1134 mapped:
1135 /* Mapping failed, bail out */
1136 if (!bit)
1137 return;
1138
1139 if (device->driver->input_mapped &&
1140 device->driver->input_mapped(device, hidinput, field, usage,
1141 &bit, &max) < 0) {
1142 /*
1143 * The driver indicated that no further generic handling
1144 * of the usage is desired.
1145 */
1146 return;
1147 }
1148
1149 set_bit(usage->type, input->evbit);
1150
1151 /*
1152 * This part is *really* controversial:
1153 * - HID aims at being generic so we should do our best to export
1154 * all incoming events
1155 * - HID describes what events are, so there is no reason for ABS_X
1156 * to be mapped to ABS_Y
1157 * - HID is using *_MISC+N as a default value, but nothing prevents
1158 * *_MISC+N to overwrite a legitimate even, which confuses userspace
1159 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different
1160 * processing)
1161 *
1162 * If devices still want to use this (at their own risk), they will
1163 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but
1164 * the default should be a reliable mapping.
1165 */
1166 while (usage->code <= max && test_and_set_bit(usage->code, bit)) {
1167 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {
1168 usage->code = find_next_zero_bit(bit,
1169 max + 1,
1170 usage->code);
1171 } else {
1172 device->status |= HID_STAT_DUP_DETECTED;
1173 goto ignore;
1174 }
1175 }
1176
1177 if (usage->code > max)
1178 goto ignore;
1179
1180 if (usage->type == EV_ABS) {
1181
1182 int a = field->logical_minimum;
1183 int b = field->logical_maximum;
1184
1185 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1186 a = field->logical_minimum = 0;
1187 b = field->logical_maximum = 255;
1188 }
1189
1190 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1191 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
1192 else input_set_abs_params(input, usage->code, a, b, 0, 0);
1193
1194 input_abs_set_res(input, usage->code,
1195 hidinput_calc_abs_res(field, usage->code));
1196
1197 /* use a larger default input buffer for MT devices */
1198 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1199 input_set_events_per_packet(input, 60);
1200 }
1201
1202 if (usage->type == EV_ABS &&
1203 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
1204 int i;
1205 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1206 input_set_abs_params(input, i, -1, 1, 0, 0);
1207 set_bit(i, input->absbit);
1208 }
1209 if (usage->hat_dir && !field->dpad)
1210 field->dpad = usage->code;
1211 }
1212
1213 /* for those devices which produce Consumer volume usage as relative,
1214 * we emulate pressing volumeup/volumedown appropriate number of times
1215 * in hidinput_hid_event()
1216 */
1217 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1218 (usage->code == ABS_VOLUME)) {
1219 set_bit(KEY_VOLUMEUP, input->keybit);
1220 set_bit(KEY_VOLUMEDOWN, input->keybit);
1221 }
1222
1223 if (usage->type == EV_KEY) {
1224 set_bit(EV_MSC, input->evbit);
1225 set_bit(MSC_SCAN, input->mscbit);
1226 }
1227
1228 return;
1229
1230 ignore:
1231 usage->type = 0;
1232 usage->code = 0;
1233 }
1234
1235 static void hidinput_handle_scroll(struct hid_usage *usage,
1236 struct input_dev *input,
1237 __s32 value)
1238 {
1239 int code;
1240 int hi_res, lo_res;
1241
1242 if (value == 0)
1243 return;
1244
1245 if (usage->code == REL_WHEEL_HI_RES)
1246 code = REL_WHEEL;
1247 else
1248 code = REL_HWHEEL;
1249
1250 /*
1251 * Windows reports one wheel click as value 120. Where a high-res
1252 * scroll wheel is present, a fraction of 120 is reported instead.
1253 * Our REL_WHEEL_HI_RES axis does the same because all HW must
1254 * adhere to the 120 expectation.
1255 */
1256 hi_res = value * 120/usage->resolution_multiplier;
1257
1258 usage->wheel_accumulated += hi_res;
1259 lo_res = usage->wheel_accumulated/120;
1260 if (lo_res)
1261 usage->wheel_accumulated -= lo_res * 120;
1262
1263 input_event(input, EV_REL, code, lo_res);
1264 input_event(input, EV_REL, usage->code, hi_res);
1265 }
1266
1267 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1268 {
1269 struct input_dev *input;
1270 unsigned *quirks = &hid->quirks;
1271
1272 if (!usage->type)
1273 return;
1274
1275 if (usage->type == EV_PWR) {
1276 hidinput_update_battery(hid, value);
1277 return;
1278 }
1279
1280 if (!field->hidinput)
1281 return;
1282
1283 input = field->hidinput->input;
1284
1285 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1286 int hat_dir = usage->hat_dir;
1287 if (!hat_dir)
1288 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1289 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1290 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
1291 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1292 return;
1293 }
1294
1295 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
1296 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
1297 return;
1298 }
1299
1300 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
1301 if (value) {
1302 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
1303 return;
1304 }
1305 input_event(input, usage->type, usage->code, 0);
1306 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
1307 return;
1308 }
1309
1310 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
1311 int a = field->logical_minimum;
1312 int b = field->logical_maximum;
1313 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
1314 }
1315
1316 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
1317 dbg_hid("Maximum Effects - %d\n",value);
1318 return;
1319 }
1320
1321 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
1322 dbg_hid("PID Pool Report\n");
1323 return;
1324 }
1325
1326 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1327 return;
1328
1329 if ((usage->type == EV_REL) && (usage->code == REL_WHEEL_HI_RES ||
1330 usage->code == REL_HWHEEL_HI_RES)) {
1331 hidinput_handle_scroll(usage, input, value);
1332 return;
1333 }
1334
1335 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1336 (usage->code == ABS_VOLUME)) {
1337 int count = abs(value);
1338 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1339 int i;
1340
1341 for (i = 0; i < count; i++) {
1342 input_event(input, EV_KEY, direction, 1);
1343 input_sync(input);
1344 input_event(input, EV_KEY, direction, 0);
1345 input_sync(input);
1346 }
1347 return;
1348 }
1349
1350 /*
1351 * Ignore out-of-range values as per HID specification,
1352 * section 5.10 and 6.2.25, when NULL state bit is present.
1353 * When it's not, clamp the value to match Microsoft's input
1354 * driver as mentioned in "Required HID usages for digitizers":
1355 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
1356 *
1357 * The logical_minimum < logical_maximum check is done so that we
1358 * don't unintentionally discard values sent by devices which
1359 * don't specify logical min and max.
1360 */
1361 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1362 (field->logical_minimum < field->logical_maximum)) {
1363 if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
1364 (value < field->logical_minimum ||
1365 value > field->logical_maximum)) {
1366 dbg_hid("Ignoring out-of-range value %x\n", value);
1367 return;
1368 }
1369 value = clamp(value,
1370 field->logical_minimum,
1371 field->logical_maximum);
1372 }
1373
1374 /*
1375 * Ignore reports for absolute data if the data didn't change. This is
1376 * not only an optimization but also fixes 'dead' key reports. Some
1377 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1378 * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1379 * can only have one of them physically available. The 'dead' keys
1380 * report constant 0. As all map to the same keycode, they'd confuse
1381 * the input layer. If we filter the 'dead' keys on the HID level, we
1382 * skip the keycode translation and only forward real events.
1383 */
1384 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1385 HID_MAIN_ITEM_BUFFERED_BYTE)) &&
1386 (field->flags & HID_MAIN_ITEM_VARIABLE) &&
1387 usage->usage_index < field->maxusage &&
1388 value == field->value[usage->usage_index])
1389 return;
1390
1391 /* report the usage code as scancode if the key status has changed */
1392 if (usage->type == EV_KEY &&
1393 (!test_bit(usage->code, input->key)) == value)
1394 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1395
1396 input_event(input, usage->type, usage->code, value);
1397
1398 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1399 usage->type == EV_KEY && value) {
1400 input_sync(input);
1401 input_event(input, usage->type, usage->code, 0);
1402 }
1403 }
1404
1405 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1406 {
1407 struct hid_input *hidinput;
1408
1409 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1410 return;
1411
1412 list_for_each_entry(hidinput, &hid->inputs, list)
1413 input_sync(hidinput->input);
1414 }
1415 EXPORT_SYMBOL_GPL(hidinput_report_event);
1416
1417 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1418 {
1419 struct hid_report *report;
1420 int i, j;
1421
1422 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1423 for (i = 0; i < report->maxfield; i++) {
1424 *field = report->field[i];
1425 for (j = 0; j < (*field)->maxusage; j++)
1426 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1427 return j;
1428 }
1429 }
1430 return -1;
1431 }
1432 EXPORT_SYMBOL_GPL(hidinput_find_field);
1433
1434 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1435 {
1436 struct hid_report *report;
1437 struct hid_field *field;
1438 int i, j;
1439
1440 list_for_each_entry(report,
1441 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1442 list) {
1443 for (i = 0; i < report->maxfield; i++) {
1444 field = report->field[i];
1445 for (j = 0; j < field->maxusage; j++)
1446 if (field->usage[j].type == EV_LED)
1447 return field;
1448 }
1449 }
1450 return NULL;
1451 }
1452 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1453
1454 unsigned int hidinput_count_leds(struct hid_device *hid)
1455 {
1456 struct hid_report *report;
1457 struct hid_field *field;
1458 int i, j;
1459 unsigned int count = 0;
1460
1461 list_for_each_entry(report,
1462 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1463 list) {
1464 for (i = 0; i < report->maxfield; i++) {
1465 field = report->field[i];
1466 for (j = 0; j < field->maxusage; j++)
1467 if (field->usage[j].type == EV_LED &&
1468 field->value[j])
1469 count += 1;
1470 }
1471 }
1472 return count;
1473 }
1474 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1475
1476 static void hidinput_led_worker(struct work_struct *work)
1477 {
1478 struct hid_device *hid = container_of(work, struct hid_device,
1479 led_work);
1480 struct hid_field *field;
1481 struct hid_report *report;
1482 int ret;
1483 u32 len;
1484 __u8 *buf;
1485
1486 field = hidinput_get_led_field(hid);
1487 if (!field)
1488 return;
1489
1490 /*
1491 * field->report is accessed unlocked regarding HID core. So there might
1492 * be another incoming SET-LED request from user-space, which changes
1493 * the LED state while we assemble our outgoing buffer. However, this
1494 * doesn't matter as hid_output_report() correctly converts it into a
1495 * boolean value no matter what information is currently set on the LED
1496 * field (even garbage). So the remote device will always get a valid
1497 * request.
1498 * And in case we send a wrong value, a next led worker is spawned
1499 * for every SET-LED request so the following worker will send the
1500 * correct value, guaranteed!
1501 */
1502
1503 report = field->report;
1504
1505 /* use custom SET_REPORT request if possible (asynchronous) */
1506 if (hid->ll_driver->request)
1507 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1508
1509 /* fall back to generic raw-output-report */
1510 len = hid_report_len(report);
1511 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1512 if (!buf)
1513 return;
1514
1515 hid_output_report(report, buf);
1516 /* synchronous output report */
1517 ret = hid_hw_output_report(hid, buf, len);
1518 if (ret == -ENOSYS)
1519 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1520 HID_REQ_SET_REPORT);
1521 kfree(buf);
1522 }
1523
1524 static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1525 unsigned int code, int value)
1526 {
1527 struct hid_device *hid = input_get_drvdata(dev);
1528 struct hid_field *field;
1529 int offset;
1530
1531 if (type == EV_FF)
1532 return input_ff_event(dev, type, code, value);
1533
1534 if (type != EV_LED)
1535 return -1;
1536
1537 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1538 hid_warn(dev, "event field not found\n");
1539 return -1;
1540 }
1541
1542 hid_set_field(field, offset, value);
1543
1544 schedule_work(&hid->led_work);
1545 return 0;
1546 }
1547
1548 static int hidinput_open(struct input_dev *dev)
1549 {
1550 struct hid_device *hid = input_get_drvdata(dev);
1551
1552 return hid_hw_open(hid);
1553 }
1554
1555 static void hidinput_close(struct input_dev *dev)
1556 {
1557 struct hid_device *hid = input_get_drvdata(dev);
1558
1559 hid_hw_close(hid);
1560 }
1561
1562 static bool __hidinput_change_resolution_multipliers(struct hid_device *hid,
1563 struct hid_report *report, bool use_logical_max)
1564 {
1565 struct hid_usage *usage;
1566 bool update_needed = false;
1567 int i, j;
1568
1569 if (report->maxfield == 0)
1570 return false;
1571
1572 /*
1573 * If we have more than one feature within this report we
1574 * need to fill in the bits from the others before we can
1575 * overwrite the ones for the Resolution Multiplier.
1576 */
1577 if (report->maxfield > 1) {
1578 hid_hw_request(hid, report, HID_REQ_GET_REPORT);
1579 hid_hw_wait(hid);
1580 }
1581
1582 for (i = 0; i < report->maxfield; i++) {
1583 __s32 value = use_logical_max ?
1584 report->field[i]->logical_maximum :
1585 report->field[i]->logical_minimum;
1586
1587 /* There is no good reason for a Resolution
1588 * Multiplier to have a count other than 1.
1589 * Ignore that case.
1590 */
1591 if (report->field[i]->report_count != 1)
1592 continue;
1593
1594 for (j = 0; j < report->field[i]->maxusage; j++) {
1595 usage = &report->field[i]->usage[j];
1596
1597 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER)
1598 continue;
1599
1600 report->field[i]->value[j] = value;
1601 update_needed = true;
1602 }
1603 }
1604
1605 return update_needed;
1606 }
1607
1608 static void hidinput_change_resolution_multipliers(struct hid_device *hid)
1609 {
1610 struct hid_report_enum *rep_enum;
1611 struct hid_report *rep;
1612 int ret;
1613
1614 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1615 list_for_each_entry(rep, &rep_enum->report_list, list) {
1616 bool update_needed = __hidinput_change_resolution_multipliers(hid,
1617 rep, true);
1618
1619 if (update_needed) {
1620 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT);
1621 if (ret) {
1622 __hidinput_change_resolution_multipliers(hid,
1623 rep, false);
1624 return;
1625 }
1626 }
1627 }
1628
1629 /* refresh our structs */
1630 hid_setup_resolution_multiplier(hid);
1631 }
1632
1633 static void report_features(struct hid_device *hid)
1634 {
1635 struct hid_driver *drv = hid->driver;
1636 struct hid_report_enum *rep_enum;
1637 struct hid_report *rep;
1638 struct hid_usage *usage;
1639 int i, j;
1640
1641 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1642 list_for_each_entry(rep, &rep_enum->report_list, list)
1643 for (i = 0; i < rep->maxfield; i++) {
1644 /* Ignore if report count is out of bounds. */
1645 if (rep->field[i]->report_count < 1)
1646 continue;
1647
1648 for (j = 0; j < rep->field[i]->maxusage; j++) {
1649 usage = &rep->field[i]->usage[j];
1650
1651 /* Verify if Battery Strength feature is available */
1652 if (usage->hid == HID_DC_BATTERYSTRENGTH)
1653 hidinput_setup_battery(hid, HID_FEATURE_REPORT,
1654 rep->field[i]);
1655
1656 if (drv->feature_mapping)
1657 drv->feature_mapping(hid, rep->field[i], usage);
1658 }
1659 }
1660 }
1661
1662 static struct hid_input *hidinput_allocate(struct hid_device *hid,
1663 unsigned int application)
1664 {
1665 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1666 struct input_dev *input_dev = input_allocate_device();
1667 const char *suffix = NULL;
1668 size_t suffix_len, name_len;
1669
1670 if (!hidinput || !input_dev)
1671 goto fail;
1672
1673 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&
1674 hid->maxapplication > 1) {
1675 switch (application) {
1676 case HID_GD_KEYBOARD:
1677 suffix = "Keyboard";
1678 break;
1679 case HID_GD_KEYPAD:
1680 suffix = "Keypad";
1681 break;
1682 case HID_GD_MOUSE:
1683 suffix = "Mouse";
1684 break;
1685 case HID_DG_STYLUS:
1686 suffix = "Pen";
1687 break;
1688 case HID_DG_TOUCHSCREEN:
1689 suffix = "Touchscreen";
1690 break;
1691 case HID_DG_TOUCHPAD:
1692 suffix = "Touchpad";
1693 break;
1694 case HID_GD_SYSTEM_CONTROL:
1695 suffix = "System Control";
1696 break;
1697 case HID_CP_CONSUMER_CONTROL:
1698 suffix = "Consumer Control";
1699 break;
1700 case HID_GD_WIRELESS_RADIO_CTLS:
1701 suffix = "Wireless Radio Control";
1702 break;
1703 case HID_GD_SYSTEM_MULTIAXIS:
1704 suffix = "System Multi Axis";
1705 break;
1706 default:
1707 break;
1708 }
1709 }
1710
1711 if (suffix) {
1712 name_len = strlen(hid->name);
1713 suffix_len = strlen(suffix);
1714 if ((name_len < suffix_len) ||
1715 strcmp(hid->name + name_len - suffix_len, suffix)) {
1716 hidinput->name = kasprintf(GFP_KERNEL, "%s %s",
1717 hid->name, suffix);
1718 if (!hidinput->name)
1719 goto fail;
1720 }
1721 }
1722
1723 input_set_drvdata(input_dev, hid);
1724 input_dev->event = hidinput_input_event;
1725 input_dev->open = hidinput_open;
1726 input_dev->close = hidinput_close;
1727 input_dev->setkeycode = hidinput_setkeycode;
1728 input_dev->getkeycode = hidinput_getkeycode;
1729
1730 input_dev->name = hidinput->name ? hidinput->name : hid->name;
1731 input_dev->phys = hid->phys;
1732 input_dev->uniq = hid->uniq;
1733 input_dev->id.bustype = hid->bus;
1734 input_dev->id.vendor = hid->vendor;
1735 input_dev->id.product = hid->product;
1736 input_dev->id.version = hid->version;
1737 input_dev->dev.parent = &hid->dev;
1738
1739 hidinput->input = input_dev;
1740 hidinput->application = application;
1741 list_add_tail(&hidinput->list, &hid->inputs);
1742
1743 INIT_LIST_HEAD(&hidinput->reports);
1744
1745 return hidinput;
1746
1747 fail:
1748 kfree(hidinput);
1749 input_free_device(input_dev);
1750 hid_err(hid, "Out of memory during hid input probe\n");
1751 return NULL;
1752 }
1753
1754 static bool hidinput_has_been_populated(struct hid_input *hidinput)
1755 {
1756 int i;
1757 unsigned long r = 0;
1758
1759 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
1760 r |= hidinput->input->evbit[i];
1761
1762 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
1763 r |= hidinput->input->keybit[i];
1764
1765 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
1766 r |= hidinput->input->relbit[i];
1767
1768 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
1769 r |= hidinput->input->absbit[i];
1770
1771 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
1772 r |= hidinput->input->mscbit[i];
1773
1774 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
1775 r |= hidinput->input->ledbit[i];
1776
1777 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
1778 r |= hidinput->input->sndbit[i];
1779
1780 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
1781 r |= hidinput->input->ffbit[i];
1782
1783 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
1784 r |= hidinput->input->swbit[i];
1785
1786 return !!r;
1787 }
1788
1789 static void hidinput_cleanup_hidinput(struct hid_device *hid,
1790 struct hid_input *hidinput)
1791 {
1792 struct hid_report *report;
1793 int i, k;
1794
1795 list_del(&hidinput->list);
1796 input_free_device(hidinput->input);
1797 kfree(hidinput->name);
1798
1799 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1800 if (k == HID_OUTPUT_REPORT &&
1801 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1802 continue;
1803
1804 list_for_each_entry(report, &hid->report_enum[k].report_list,
1805 list) {
1806
1807 for (i = 0; i < report->maxfield; i++)
1808 if (report->field[i]->hidinput == hidinput)
1809 report->field[i]->hidinput = NULL;
1810 }
1811 }
1812
1813 kfree(hidinput);
1814 }
1815
1816 static struct hid_input *hidinput_match(struct hid_report *report)
1817 {
1818 struct hid_device *hid = report->device;
1819 struct hid_input *hidinput;
1820
1821 list_for_each_entry(hidinput, &hid->inputs, list) {
1822 if (hidinput->report &&
1823 hidinput->report->id == report->id)
1824 return hidinput;
1825 }
1826
1827 return NULL;
1828 }
1829
1830 static struct hid_input *hidinput_match_application(struct hid_report *report)
1831 {
1832 struct hid_device *hid = report->device;
1833 struct hid_input *hidinput;
1834
1835 list_for_each_entry(hidinput, &hid->inputs, list) {
1836 if (hidinput->application == report->application)
1837 return hidinput;
1838 }
1839
1840 return NULL;
1841 }
1842
1843 static inline void hidinput_configure_usages(struct hid_input *hidinput,
1844 struct hid_report *report)
1845 {
1846 int i, j;
1847
1848 for (i = 0; i < report->maxfield; i++)
1849 for (j = 0; j < report->field[i]->maxusage; j++)
1850 hidinput_configure_usage(hidinput, report->field[i],
1851 report->field[i]->usage + j);
1852 }
1853
1854 /*
1855 * Register the input device; print a message.
1856 * Configure the input layer interface
1857 * Read all reports and initialize the absolute field values.
1858 */
1859
1860 int hidinput_connect(struct hid_device *hid, unsigned int force)
1861 {
1862 struct hid_driver *drv = hid->driver;
1863 struct hid_report *report;
1864 struct hid_input *next, *hidinput = NULL;
1865 unsigned int application;
1866 int i, k;
1867
1868 INIT_LIST_HEAD(&hid->inputs);
1869 INIT_WORK(&hid->led_work, hidinput_led_worker);
1870
1871 hid->status &= ~HID_STAT_DUP_DETECTED;
1872
1873 if (!force) {
1874 for (i = 0; i < hid->maxcollection; i++) {
1875 struct hid_collection *col = &hid->collection[i];
1876 if (col->type == HID_COLLECTION_APPLICATION ||
1877 col->type == HID_COLLECTION_PHYSICAL)
1878 if (IS_INPUT_APPLICATION(col->usage))
1879 break;
1880 }
1881
1882 if (i == hid->maxcollection)
1883 return -1;
1884 }
1885
1886 report_features(hid);
1887
1888 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1889 if (k == HID_OUTPUT_REPORT &&
1890 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1891 continue;
1892
1893 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1894
1895 if (!report->maxfield)
1896 continue;
1897
1898 application = report->application;
1899
1900 /*
1901 * Find the previous hidinput report attached
1902 * to this report id.
1903 */
1904 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
1905 hidinput = hidinput_match(report);
1906 else if (hid->maxapplication > 1 &&
1907 (hid->quirks & HID_QUIRK_INPUT_PER_APP))
1908 hidinput = hidinput_match_application(report);
1909
1910 if (!hidinput) {
1911 hidinput = hidinput_allocate(hid, application);
1912 if (!hidinput)
1913 goto out_unwind;
1914 }
1915
1916 hidinput_configure_usages(hidinput, report);
1917
1918 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
1919 hidinput->report = report;
1920
1921 list_add_tail(&report->hidinput_list,
1922 &hidinput->reports);
1923 }
1924 }
1925
1926 hidinput_change_resolution_multipliers(hid);
1927
1928 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1929 if (drv->input_configured &&
1930 drv->input_configured(hid, hidinput))
1931 goto out_unwind;
1932
1933 if (!hidinput_has_been_populated(hidinput)) {
1934 /* no need to register an input device not populated */
1935 hidinput_cleanup_hidinput(hid, hidinput);
1936 continue;
1937 }
1938
1939 if (input_register_device(hidinput->input))
1940 goto out_unwind;
1941 hidinput->registered = true;
1942 }
1943
1944 if (list_empty(&hid->inputs)) {
1945 hid_err(hid, "No inputs registered, leaving\n");
1946 goto out_unwind;
1947 }
1948
1949 if (hid->status & HID_STAT_DUP_DETECTED)
1950 hid_dbg(hid,
1951 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n");
1952
1953 return 0;
1954
1955 out_unwind:
1956 /* unwind the ones we already registered */
1957 hidinput_disconnect(hid);
1958
1959 return -1;
1960 }
1961 EXPORT_SYMBOL_GPL(hidinput_connect);
1962
1963 void hidinput_disconnect(struct hid_device *hid)
1964 {
1965 struct hid_input *hidinput, *next;
1966
1967 hidinput_cleanup_battery(hid);
1968
1969 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1970 list_del(&hidinput->list);
1971 if (hidinput->registered)
1972 input_unregister_device(hidinput->input);
1973 else
1974 input_free_device(hidinput->input);
1975 kfree(hidinput->name);
1976 kfree(hidinput);
1977 }
1978
1979 /* led_work is spawned by input_dev callbacks, but doesn't access the
1980 * parent input_dev at all. Once all input devices are removed, we
1981 * know that led_work will never get restarted, so we can cancel it
1982 * synchronously and are safe. */
1983 cancel_work_sync(&hid->led_work);
1984 }
1985 EXPORT_SYMBOL_GPL(hidinput_disconnect);
Linux with added FPC-III support