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lib/string_helpers.c:string_get_size(): use 32 bit arithmetic when possible
[linux-2.6/btrfs-unstable.git] / drivers / hid / hid-input.c
blob052869d0ab787da2a3d685c5c6bf905d05e047b8
1 /*
2 * Copyright (c) 2000-2001 Vojtech Pavlik
3 * Copyright (c) 2006-2010 Jiri Kosina
4 *
5 * HID to Linux Input mapping
6 */
7
8 /*
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 * Should you need to contact me, the author, you can do so either by
24 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
25 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
26 */
27
28 #include <linux/module.h>
29 #include <linux/slab.h>
30 #include <linux/kernel.h>
31
32 #include <linux/hid.h>
33 #include <linux/hid-debug.h>
34
35 #include "hid-ids.h"
36
37 #define unk KEY_UNKNOWN
38
39 static const unsigned char hid_keyboard[256] = {
40 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
41 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
42 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
43 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
44 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
45 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
46 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
47 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
48 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
49 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,
50 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
51 unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk,
52 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
53 unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk,
54 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
55 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
56 };
57
58 static const struct {
59 __s32 x;
60 __s32 y;
61 } hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
62
63 #define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
64 #define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
65 #define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
66 #define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
67
68 #define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
69 &max, EV_ABS, (c))
70 #define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
71 &max, EV_KEY, (c))
72
73 static bool match_scancode(struct hid_usage *usage,
74 unsigned int cur_idx, unsigned int scancode)
75 {
76 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
77 }
78
79 static bool match_keycode(struct hid_usage *usage,
80 unsigned int cur_idx, unsigned int keycode)
81 {
82 /*
83 * We should exclude unmapped usages when doing lookup by keycode.
84 */
85 return (usage->type == EV_KEY && usage->code == keycode);
86 }
87
88 static bool match_index(struct hid_usage *usage,
89 unsigned int cur_idx, unsigned int idx)
90 {
91 return cur_idx == idx;
92 }
93
94 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
95 unsigned int cur_idx, unsigned int val);
96
97 static struct hid_usage *hidinput_find_key(struct hid_device *hid,
98 hid_usage_cmp_t match,
99 unsigned int value,
100 unsigned int *usage_idx)
101 {
102 unsigned int i, j, k, cur_idx = 0;
103 struct hid_report *report;
104 struct hid_usage *usage;
105
106 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
107 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
108 for (i = 0; i < report->maxfield; i++) {
109 for (j = 0; j < report->field[i]->maxusage; j++) {
110 usage = report->field[i]->usage + j;
111 if (usage->type == EV_KEY || usage->type == 0) {
112 if (match(usage, cur_idx, value)) {
113 if (usage_idx)
114 *usage_idx = cur_idx;
115 return usage;
116 }
117 cur_idx++;
118 }
119 }
120 }
121 }
122 }
123 return NULL;
124 }
125
126 static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
127 const struct input_keymap_entry *ke,
128 unsigned int *index)
129 {
130 struct hid_usage *usage;
131 unsigned int scancode;
132
133 if (ke->flags & INPUT_KEYMAP_BY_INDEX)
134 usage = hidinput_find_key(hid, match_index, ke->index, index);
135 else if (input_scancode_to_scalar(ke, &scancode) == 0)
136 usage = hidinput_find_key(hid, match_scancode, scancode, index);
137 else
138 usage = NULL;
139
140 return usage;
141 }
142
143 static int hidinput_getkeycode(struct input_dev *dev,
144 struct input_keymap_entry *ke)
145 {
146 struct hid_device *hid = input_get_drvdata(dev);
147 struct hid_usage *usage;
148 unsigned int scancode, index;
149
150 usage = hidinput_locate_usage(hid, ke, &index);
151 if (usage) {
152 ke->keycode = usage->type == EV_KEY ?
153 usage->code : KEY_RESERVED;
154 ke->index = index;
155 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
156 ke->len = sizeof(scancode);
157 memcpy(ke->scancode, &scancode, sizeof(scancode));
158 return 0;
159 }
160
161 return -EINVAL;
162 }
163
164 static int hidinput_setkeycode(struct input_dev *dev,
165 const struct input_keymap_entry *ke,
166 unsigned int *old_keycode)
167 {
168 struct hid_device *hid = input_get_drvdata(dev);
169 struct hid_usage *usage;
170
171 usage = hidinput_locate_usage(hid, ke, NULL);
172 if (usage) {
173 *old_keycode = usage->type == EV_KEY ?
174 usage->code : KEY_RESERVED;
175 usage->code = ke->keycode;
176
177 clear_bit(*old_keycode, dev->keybit);
178 set_bit(usage->code, dev->keybit);
179 dbg_hid("Assigned keycode %d to HID usage code %x\n",
180 usage->code, usage->hid);
181
182 /*
183 * Set the keybit for the old keycode if the old keycode is used
184 * by another key
185 */
186 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
187 set_bit(*old_keycode, dev->keybit);
188
189 return 0;
190 }
191
192 return -EINVAL;
193 }
194
195
196 /**
197 * hidinput_calc_abs_res - calculate an absolute axis resolution
198 * @field: the HID report field to calculate resolution for
199 * @code: axis code
200 *
201 * The formula is:
202 * (logical_maximum - logical_minimum)
203 * resolution = ----------------------------------------------------------
204 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent
205 *
206 * as seen in the HID specification v1.11 6.2.2.7 Global Items.
207 *
208 * Only exponent 1 length units are processed. Centimeters and inches are
209 * converted to millimeters. Degrees are converted to radians.
210 */
211 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
212 {
213 __s32 unit_exponent = field->unit_exponent;
214 __s32 logical_extents = field->logical_maximum -
215 field->logical_minimum;
216 __s32 physical_extents = field->physical_maximum -
217 field->physical_minimum;
218 __s32 prev;
219
220 /* Check if the extents are sane */
221 if (logical_extents <= 0 || physical_extents <= 0)
222 return 0;
223
224 /*
225 * Verify and convert units.
226 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
227 */
228 switch (code) {
229 case ABS_X:
230 case ABS_Y:
231 case ABS_Z:
232 case ABS_MT_POSITION_X:
233 case ABS_MT_POSITION_Y:
234 case ABS_MT_TOOL_X:
235 case ABS_MT_TOOL_Y:
236 case ABS_MT_TOUCH_MAJOR:
237 case ABS_MT_TOUCH_MINOR:
238 if (field->unit == 0x11) { /* If centimeters */
239 /* Convert to millimeters */
240 unit_exponent += 1;
241 } else if (field->unit == 0x13) { /* If inches */
242 /* Convert to millimeters */
243 prev = physical_extents;
244 physical_extents *= 254;
245 if (physical_extents < prev)
246 return 0;
247 unit_exponent -= 1;
248 } else {
249 return 0;
250 }
251 break;
252
253 case ABS_RX:
254 case ABS_RY:
255 case ABS_RZ:
256 case ABS_TILT_X:
257 case ABS_TILT_Y:
258 if (field->unit == 0x14) { /* If degrees */
259 /* Convert to radians */
260 prev = logical_extents;
261 logical_extents *= 573;
262 if (logical_extents < prev)
263 return 0;
264 unit_exponent += 1;
265 } else if (field->unit != 0x12) { /* If not radians */
266 return 0;
267 }
268 break;
269
270 default:
271 return 0;
272 }
273
274 /* Apply negative unit exponent */
275 for (; unit_exponent < 0; unit_exponent++) {
276 prev = logical_extents;
277 logical_extents *= 10;
278 if (logical_extents < prev)
279 return 0;
280 }
281 /* Apply positive unit exponent */
282 for (; unit_exponent > 0; unit_exponent--) {
283 prev = physical_extents;
284 physical_extents *= 10;
285 if (physical_extents < prev)
286 return 0;
287 }
288
289 /* Calculate resolution */
290 return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
291 }
292 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
293
294 #ifdef CONFIG_HID_BATTERY_STRENGTH
295 static enum power_supply_property hidinput_battery_props[] = {
296 POWER_SUPPLY_PROP_PRESENT,
297 POWER_SUPPLY_PROP_ONLINE,
298 POWER_SUPPLY_PROP_CAPACITY,
299 POWER_SUPPLY_PROP_MODEL_NAME,
300 POWER_SUPPLY_PROP_STATUS,
301 POWER_SUPPLY_PROP_SCOPE,
302 };
303
304 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
305 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
306
307 static const struct hid_device_id hid_battery_quirks[] = {
308 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
309 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
310 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
311 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
312 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
313 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
314 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
315 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
316 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
317 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
318 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO),
319 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
320 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
321 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
322 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
323 {}
324 };
325
326 static unsigned find_battery_quirk(struct hid_device *hdev)
327 {
328 unsigned quirks = 0;
329 const struct hid_device_id *match;
330
331 match = hid_match_id(hdev, hid_battery_quirks);
332 if (match != NULL)
333 quirks = match->driver_data;
334
335 return quirks;
336 }
337
338 static int hidinput_get_battery_property(struct power_supply *psy,
339 enum power_supply_property prop,
340 union power_supply_propval *val)
341 {
342 struct hid_device *dev = container_of(psy, struct hid_device, battery);
343 int ret = 0;
344 __u8 *buf;
345
346 switch (prop) {
347 case POWER_SUPPLY_PROP_PRESENT:
348 case POWER_SUPPLY_PROP_ONLINE:
349 val->intval = 1;
350 break;
351
352 case POWER_SUPPLY_PROP_CAPACITY:
353
354 buf = kmalloc(2 * sizeof(__u8), GFP_KERNEL);
355 if (!buf) {
356 ret = -ENOMEM;
357 break;
358 }
359 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2,
360 dev->battery_report_type,
361 HID_REQ_GET_REPORT);
362
363 if (ret != 2) {
364 ret = -ENODATA;
365 kfree(buf);
366 break;
367 }
368 ret = 0;
369
370 if (dev->battery_min < dev->battery_max &&
371 buf[1] >= dev->battery_min &&
372 buf[1] <= dev->battery_max)
373 val->intval = (100 * (buf[1] - dev->battery_min)) /
374 (dev->battery_max - dev->battery_min);
375 kfree(buf);
376 break;
377
378 case POWER_SUPPLY_PROP_MODEL_NAME:
379 val->strval = dev->name;
380 break;
381
382 case POWER_SUPPLY_PROP_STATUS:
383 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
384 break;
385
386 case POWER_SUPPLY_PROP_SCOPE:
387 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
388 break;
389
390 default:
391 ret = -EINVAL;
392 break;
393 }
394
395 return ret;
396 }
397
398 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
399 {
400 struct power_supply *battery = &dev->battery;
401 int ret;
402 unsigned quirks;
403 s32 min, max;
404
405 if (field->usage->hid != HID_DC_BATTERYSTRENGTH)
406 return false; /* no match */
407
408 if (battery->name != NULL)
409 goto out; /* already initialized? */
410
411 battery->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq);
412 if (battery->name == NULL)
413 goto out;
414
415 battery->type = POWER_SUPPLY_TYPE_BATTERY;
416 battery->properties = hidinput_battery_props;
417 battery->num_properties = ARRAY_SIZE(hidinput_battery_props);
418 battery->use_for_apm = 0;
419 battery->get_property = hidinput_get_battery_property;
420
421 quirks = find_battery_quirk(dev);
422
423 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
424 dev->bus, dev->vendor, dev->product, dev->version, quirks);
425
426 min = field->logical_minimum;
427 max = field->logical_maximum;
428
429 if (quirks & HID_BATTERY_QUIRK_PERCENT) {
430 min = 0;
431 max = 100;
432 }
433
434 if (quirks & HID_BATTERY_QUIRK_FEATURE)
435 report_type = HID_FEATURE_REPORT;
436
437 dev->battery_min = min;
438 dev->battery_max = max;
439 dev->battery_report_type = report_type;
440 dev->battery_report_id = field->report->id;
441
442 ret = power_supply_register(&dev->dev, battery);
443 if (ret != 0) {
444 hid_warn(dev, "can't register power supply: %d\n", ret);
445 kfree(battery->name);
446 battery->name = NULL;
447 }
448
449 power_supply_powers(battery, &dev->dev);
450
451 out:
452 return true;
453 }
454
455 static void hidinput_cleanup_battery(struct hid_device *dev)
456 {
457 if (!dev->battery.name)
458 return;
459
460 power_supply_unregister(&dev->battery);
461 kfree(dev->battery.name);
462 dev->battery.name = NULL;
463 }
464 #else /* !CONFIG_HID_BATTERY_STRENGTH */
465 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
466 struct hid_field *field)
467 {
468 return false;
469 }
470
471 static void hidinput_cleanup_battery(struct hid_device *dev)
472 {
473 }
474 #endif /* CONFIG_HID_BATTERY_STRENGTH */
475
476 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
477 struct hid_usage *usage)
478 {
479 struct input_dev *input = hidinput->input;
480 struct hid_device *device = input_get_drvdata(input);
481 int max = 0, code;
482 unsigned long *bit = NULL;
483
484 field->hidinput = hidinput;
485
486 if (field->flags & HID_MAIN_ITEM_CONSTANT)
487 goto ignore;
488
489 /* Ignore if report count is out of bounds. */
490 if (field->report_count < 1)
491 goto ignore;
492
493 /* only LED usages are supported in output fields */
494 if (field->report_type == HID_OUTPUT_REPORT &&
495 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
496 goto ignore;
497 }
498
499 if (device->driver->input_mapping) {
500 int ret = device->driver->input_mapping(device, hidinput, field,
501 usage, &bit, &max);
502 if (ret > 0)
503 goto mapped;
504 if (ret < 0)
505 goto ignore;
506 }
507
508 switch (usage->hid & HID_USAGE_PAGE) {
509 case HID_UP_UNDEFINED:
510 goto ignore;
511
512 case HID_UP_KEYBOARD:
513 set_bit(EV_REP, input->evbit);
514
515 if ((usage->hid & HID_USAGE) < 256) {
516 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
517 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
518 } else
519 map_key(KEY_UNKNOWN);
520
521 break;
522
523 case HID_UP_BUTTON:
524 code = ((usage->hid - 1) & HID_USAGE);
525
526 switch (field->application) {
527 case HID_GD_MOUSE:
528 case HID_GD_POINTER: code += BTN_MOUSE; break;
529 case HID_GD_JOYSTICK:
530 if (code <= 0xf)
531 code += BTN_JOYSTICK;
532 else
533 code += BTN_TRIGGER_HAPPY - 0x10;
534 break;
535 case HID_GD_GAMEPAD:
536 if (code <= 0xf)
537 code += BTN_GAMEPAD;
538 else
539 code += BTN_TRIGGER_HAPPY - 0x10;
540 break;
541 default:
542 switch (field->physical) {
543 case HID_GD_MOUSE:
544 case HID_GD_POINTER: code += BTN_MOUSE; break;
545 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
546 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
547 default: code += BTN_MISC;
548 }
549 }
550
551 map_key(code);
552 break;
553
554 case HID_UP_SIMULATION:
555 switch (usage->hid & 0xffff) {
556 case 0xba: map_abs(ABS_RUDDER); break;
557 case 0xbb: map_abs(ABS_THROTTLE); break;
558 case 0xc4: map_abs(ABS_GAS); break;
559 case 0xc5: map_abs(ABS_BRAKE); break;
560 case 0xc8: map_abs(ABS_WHEEL); break;
561 default: goto ignore;
562 }
563 break;
564
565 case HID_UP_GENDESK:
566 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
567 switch (usage->hid & 0xf) {
568 case 0x1: map_key_clear(KEY_POWER); break;
569 case 0x2: map_key_clear(KEY_SLEEP); break;
570 case 0x3: map_key_clear(KEY_WAKEUP); break;
571 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
572 case 0x5: map_key_clear(KEY_MENU); break;
573 case 0x6: map_key_clear(KEY_PROG1); break;
574 case 0x7: map_key_clear(KEY_HELP); break;
575 case 0x8: map_key_clear(KEY_EXIT); break;
576 case 0x9: map_key_clear(KEY_SELECT); break;
577 case 0xa: map_key_clear(KEY_RIGHT); break;
578 case 0xb: map_key_clear(KEY_LEFT); break;
579 case 0xc: map_key_clear(KEY_UP); break;
580 case 0xd: map_key_clear(KEY_DOWN); break;
581 case 0xe: map_key_clear(KEY_POWER2); break;
582 case 0xf: map_key_clear(KEY_RESTART); break;
583 default: goto unknown;
584 }
585 break;
586 }
587
588 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
589 switch (usage->hid) {
590 case HID_GD_UP: usage->hat_dir = 1; break;
591 case HID_GD_DOWN: usage->hat_dir = 5; break;
592 case HID_GD_RIGHT: usage->hat_dir = 3; break;
593 case HID_GD_LEFT: usage->hat_dir = 7; break;
594 default: goto unknown;
595 }
596 if (field->dpad) {
597 map_abs(field->dpad);
598 goto ignore;
599 }
600 map_abs(ABS_HAT0X);
601 break;
602 }
603
604 switch (usage->hid) {
605 /* These usage IDs map directly to the usage codes. */
606 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
607 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
608 if (field->flags & HID_MAIN_ITEM_RELATIVE)
609 map_rel(usage->hid & 0xf);
610 else
611 map_abs_clear(usage->hid & 0xf);
612 break;
613
614 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
615 if (field->flags & HID_MAIN_ITEM_RELATIVE)
616 map_rel(usage->hid & 0xf);
617 else
618 map_abs(usage->hid & 0xf);
619 break;
620
621 case HID_GD_HATSWITCH:
622 usage->hat_min = field->logical_minimum;
623 usage->hat_max = field->logical_maximum;
624 map_abs(ABS_HAT0X);
625 break;
626
627 case HID_GD_START: map_key_clear(BTN_START); break;
628 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
629
630 default: goto unknown;
631 }
632
633 break;
634
635 case HID_UP_LED:
636 switch (usage->hid & 0xffff) { /* HID-Value: */
637 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
638 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
639 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
640 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
641 case 0x05: map_led (LED_KANA); break; /* "Kana" */
642 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
643 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
644 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
645 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
646 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
647 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
648
649 default: goto ignore;
650 }
651 break;
652
653 case HID_UP_DIGITIZER:
654 switch (usage->hid & 0xff) {
655 case 0x00: /* Undefined */
656 goto ignore;
657
658 case 0x30: /* TipPressure */
659 if (!test_bit(BTN_TOUCH, input->keybit)) {
660 device->quirks |= HID_QUIRK_NOTOUCH;
661 set_bit(EV_KEY, input->evbit);
662 set_bit(BTN_TOUCH, input->keybit);
663 }
664 map_abs_clear(ABS_PRESSURE);
665 break;
666
667 case 0x32: /* InRange */
668 switch (field->physical & 0xff) {
669 case 0x21: map_key(BTN_TOOL_MOUSE); break;
670 case 0x22: map_key(BTN_TOOL_FINGER); break;
671 default: map_key(BTN_TOOL_PEN); break;
672 }
673 break;
674
675 case 0x3c: /* Invert */
676 map_key_clear(BTN_TOOL_RUBBER);
677 break;
678
679 case 0x3d: /* X Tilt */
680 map_abs_clear(ABS_TILT_X);
681 break;
682
683 case 0x3e: /* Y Tilt */
684 map_abs_clear(ABS_TILT_Y);
685 break;
686
687 case 0x33: /* Touch */
688 case 0x42: /* TipSwitch */
689 case 0x43: /* TipSwitch2 */
690 device->quirks &= ~HID_QUIRK_NOTOUCH;
691 map_key_clear(BTN_TOUCH);
692 break;
693
694 case 0x44: /* BarrelSwitch */
695 map_key_clear(BTN_STYLUS);
696 break;
697
698 case 0x46: /* TabletPick */
699 case 0x5a: /* SecondaryBarrelSwitch */
700 map_key_clear(BTN_STYLUS2);
701 break;
702
703 case 0x5b: /* TransducerSerialNumber */
704 usage->type = EV_MSC;
705 usage->code = MSC_SERIAL;
706 bit = input->mscbit;
707 max = MSC_MAX;
708 break;
709
710 default: goto unknown;
711 }
712 break;
713
714 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
715 switch (usage->hid & HID_USAGE) {
716 case 0x000: goto ignore;
717 case 0x030: map_key_clear(KEY_POWER); break;
718 case 0x031: map_key_clear(KEY_RESTART); break;
719 case 0x032: map_key_clear(KEY_SLEEP); break;
720 case 0x034: map_key_clear(KEY_SLEEP); break;
721 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
722 case 0x036: map_key_clear(BTN_MISC); break;
723
724 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
725 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
726 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
727 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
728 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
729 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
730 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
731 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
732 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
733
734 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
735 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
736 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
737 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
738 case 0x069: map_key_clear(KEY_RED); break;
739 case 0x06a: map_key_clear(KEY_GREEN); break;
740 case 0x06b: map_key_clear(KEY_BLUE); break;
741 case 0x06c: map_key_clear(KEY_YELLOW); break;
742 case 0x06d: map_key_clear(KEY_ZOOM); break;
743
744 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
745 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
746 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
747 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
748 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
749 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
750
751 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
752 case 0x083: map_key_clear(KEY_LAST); break;
753 case 0x084: map_key_clear(KEY_ENTER); break;
754 case 0x088: map_key_clear(KEY_PC); break;
755 case 0x089: map_key_clear(KEY_TV); break;
756 case 0x08a: map_key_clear(KEY_WWW); break;
757 case 0x08b: map_key_clear(KEY_DVD); break;
758 case 0x08c: map_key_clear(KEY_PHONE); break;
759 case 0x08d: map_key_clear(KEY_PROGRAM); break;
760 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
761 case 0x08f: map_key_clear(KEY_GAMES); break;
762 case 0x090: map_key_clear(KEY_MEMO); break;
763 case 0x091: map_key_clear(KEY_CD); break;
764 case 0x092: map_key_clear(KEY_VCR); break;
765 case 0x093: map_key_clear(KEY_TUNER); break;
766 case 0x094: map_key_clear(KEY_EXIT); break;
767 case 0x095: map_key_clear(KEY_HELP); break;
768 case 0x096: map_key_clear(KEY_TAPE); break;
769 case 0x097: map_key_clear(KEY_TV2); break;
770 case 0x098: map_key_clear(KEY_SAT); break;
771 case 0x09a: map_key_clear(KEY_PVR); break;
772
773 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
774 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
775 case 0x0a0: map_key_clear(KEY_VCR2); break;
776
777 case 0x0b0: map_key_clear(KEY_PLAY); break;
778 case 0x0b1: map_key_clear(KEY_PAUSE); break;
779 case 0x0b2: map_key_clear(KEY_RECORD); break;
780 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
781 case 0x0b4: map_key_clear(KEY_REWIND); break;
782 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
783 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
784 case 0x0b7: map_key_clear(KEY_STOPCD); break;
785 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
786 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
787 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
788 case 0x0bf: map_key_clear(KEY_SLOW); break;
789
790 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
791 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
792 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
793 case 0x0e2: map_key_clear(KEY_MUTE); break;
794 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
795 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
796 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
797 case 0x0f5: map_key_clear(KEY_SLOW); break;
798
799 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
800 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
801 case 0x183: map_key_clear(KEY_CONFIG); break;
802 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
803 case 0x185: map_key_clear(KEY_EDITOR); break;
804 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
805 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
806 case 0x188: map_key_clear(KEY_PRESENTATION); break;
807 case 0x189: map_key_clear(KEY_DATABASE); break;
808 case 0x18a: map_key_clear(KEY_MAIL); break;
809 case 0x18b: map_key_clear(KEY_NEWS); break;
810 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
811 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
812 case 0x18e: map_key_clear(KEY_CALENDAR); break;
813 case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
814 case 0x190: map_key_clear(KEY_JOURNAL); break;
815 case 0x191: map_key_clear(KEY_FINANCE); break;
816 case 0x192: map_key_clear(KEY_CALC); break;
817 case 0x193: map_key_clear(KEY_PLAYER); break;
818 case 0x194: map_key_clear(KEY_FILE); break;
819 case 0x196: map_key_clear(KEY_WWW); break;
820 case 0x199: map_key_clear(KEY_CHAT); break;
821 case 0x19c: map_key_clear(KEY_LOGOFF); break;
822 case 0x19e: map_key_clear(KEY_COFFEE); break;
823 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
824 case 0x1a2: map_key_clear(KEY_APPSELECT); break;
825 case 0x1a3: map_key_clear(KEY_NEXT); break;
826 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
827 case 0x1a6: map_key_clear(KEY_HELP); break;
828 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
829 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
830 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
831 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
832 case 0x1b4: map_key_clear(KEY_FILE); break;
833 case 0x1b6: map_key_clear(KEY_IMAGES); break;
834 case 0x1b7: map_key_clear(KEY_AUDIO); break;
835 case 0x1b8: map_key_clear(KEY_VIDEO); break;
836 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
837 case 0x1bd: map_key_clear(KEY_INFO); break;
838 case 0x201: map_key_clear(KEY_NEW); break;
839 case 0x202: map_key_clear(KEY_OPEN); break;
840 case 0x203: map_key_clear(KEY_CLOSE); break;
841 case 0x204: map_key_clear(KEY_EXIT); break;
842 case 0x207: map_key_clear(KEY_SAVE); break;
843 case 0x208: map_key_clear(KEY_PRINT); break;
844 case 0x209: map_key_clear(KEY_PROPS); break;
845 case 0x21a: map_key_clear(KEY_UNDO); break;
846 case 0x21b: map_key_clear(KEY_COPY); break;
847 case 0x21c: map_key_clear(KEY_CUT); break;
848 case 0x21d: map_key_clear(KEY_PASTE); break;
849 case 0x21f: map_key_clear(KEY_FIND); break;
850 case 0x221: map_key_clear(KEY_SEARCH); break;
851 case 0x222: map_key_clear(KEY_GOTO); break;
852 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
853 case 0x224: map_key_clear(KEY_BACK); break;
854 case 0x225: map_key_clear(KEY_FORWARD); break;
855 case 0x226: map_key_clear(KEY_STOP); break;
856 case 0x227: map_key_clear(KEY_REFRESH); break;
857 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
858 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
859 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
860 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
861 case 0x233: map_key_clear(KEY_SCROLLUP); break;
862 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
863 case 0x238: map_rel(REL_HWHEEL); break;
864 case 0x23d: map_key_clear(KEY_EDIT); break;
865 case 0x25f: map_key_clear(KEY_CANCEL); break;
866 case 0x269: map_key_clear(KEY_INSERT); break;
867 case 0x26a: map_key_clear(KEY_DELETE); break;
868 case 0x279: map_key_clear(KEY_REDO); break;
869
870 case 0x289: map_key_clear(KEY_REPLY); break;
871 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
872 case 0x28c: map_key_clear(KEY_SEND); break;
873
874 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
875 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
876 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
877 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
878 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
879 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
880
881 default: map_key_clear(KEY_UNKNOWN);
882 }
883 break;
884
885 case HID_UP_GENDEVCTRLS:
886 if (hidinput_setup_battery(device, HID_INPUT_REPORT, field))
887 goto ignore;
888 else
889 goto unknown;
890 break;
891
892 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
893 set_bit(EV_REP, input->evbit);
894 switch (usage->hid & HID_USAGE) {
895 case 0x021: map_key_clear(KEY_PRINT); break;
896 case 0x070: map_key_clear(KEY_HP); break;
897 case 0x071: map_key_clear(KEY_CAMERA); break;
898 case 0x072: map_key_clear(KEY_SOUND); break;
899 case 0x073: map_key_clear(KEY_QUESTION); break;
900 case 0x080: map_key_clear(KEY_EMAIL); break;
901 case 0x081: map_key_clear(KEY_CHAT); break;
902 case 0x082: map_key_clear(KEY_SEARCH); break;
903 case 0x083: map_key_clear(KEY_CONNECT); break;
904 case 0x084: map_key_clear(KEY_FINANCE); break;
905 case 0x085: map_key_clear(KEY_SPORT); break;
906 case 0x086: map_key_clear(KEY_SHOP); break;
907 default: goto ignore;
908 }
909 break;
910
911 case HID_UP_HPVENDOR2:
912 set_bit(EV_REP, input->evbit);
913 switch (usage->hid & HID_USAGE) {
914 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
915 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
916 default: goto ignore;
917 }
918 break;
919
920 case HID_UP_MSVENDOR:
921 goto ignore;
922
923 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
924 set_bit(EV_REP, input->evbit);
925 goto ignore;
926
927 case HID_UP_LOGIVENDOR:
928 goto ignore;
929
930 case HID_UP_PID:
931 switch (usage->hid & HID_USAGE) {
932 case 0xa4: map_key_clear(BTN_DEAD); break;
933 default: goto ignore;
934 }
935 break;
936
937 default:
938 unknown:
939 if (field->report_size == 1) {
940 if (field->report->type == HID_OUTPUT_REPORT) {
941 map_led(LED_MISC);
942 break;
943 }
944 map_key(BTN_MISC);
945 break;
946 }
947 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
948 map_rel(REL_MISC);
949 break;
950 }
951 map_abs(ABS_MISC);
952 break;
953 }
954
955 mapped:
956 if (device->driver->input_mapped && device->driver->input_mapped(device,
957 hidinput, field, usage, &bit, &max) < 0)
958 goto ignore;
959
960 set_bit(usage->type, input->evbit);
961
962 while (usage->code <= max && test_and_set_bit(usage->code, bit))
963 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
964
965 if (usage->code > max)
966 goto ignore;
967
968
969 if (usage->type == EV_ABS) {
970
971 int a = field->logical_minimum;
972 int b = field->logical_maximum;
973
974 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
975 a = field->logical_minimum = 0;
976 b = field->logical_maximum = 255;
977 }
978
979 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
980 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
981 else input_set_abs_params(input, usage->code, a, b, 0, 0);
982
983 input_abs_set_res(input, usage->code,
984 hidinput_calc_abs_res(field, usage->code));
985
986 /* use a larger default input buffer for MT devices */
987 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
988 input_set_events_per_packet(input, 60);
989 }
990
991 if (usage->type == EV_ABS &&
992 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
993 int i;
994 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
995 input_set_abs_params(input, i, -1, 1, 0, 0);
996 set_bit(i, input->absbit);
997 }
998 if (usage->hat_dir && !field->dpad)
999 field->dpad = usage->code;
1000 }
1001
1002 /* for those devices which produce Consumer volume usage as relative,
1003 * we emulate pressing volumeup/volumedown appropriate number of times
1004 * in hidinput_hid_event()
1005 */
1006 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1007 (usage->code == ABS_VOLUME)) {
1008 set_bit(KEY_VOLUMEUP, input->keybit);
1009 set_bit(KEY_VOLUMEDOWN, input->keybit);
1010 }
1011
1012 if (usage->type == EV_KEY) {
1013 set_bit(EV_MSC, input->evbit);
1014 set_bit(MSC_SCAN, input->mscbit);
1015 }
1016
1017 ignore:
1018 return;
1019
1020 }
1021
1022 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1023 {
1024 struct input_dev *input;
1025 unsigned *quirks = &hid->quirks;
1026
1027 if (!field->hidinput)
1028 return;
1029
1030 input = field->hidinput->input;
1031
1032 if (!usage->type)
1033 return;
1034
1035 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1036 int hat_dir = usage->hat_dir;
1037 if (!hat_dir)
1038 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1039 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1040 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
1041 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1042 return;
1043 }
1044
1045 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
1046 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
1047 return;
1048 }
1049
1050 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
1051 if (value) {
1052 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
1053 return;
1054 }
1055 input_event(input, usage->type, usage->code, 0);
1056 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
1057 return;
1058 }
1059
1060 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
1061 int a = field->logical_minimum;
1062 int b = field->logical_maximum;
1063 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
1064 }
1065
1066 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
1067 dbg_hid("Maximum Effects - %d\n",value);
1068 return;
1069 }
1070
1071 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
1072 dbg_hid("PID Pool Report\n");
1073 return;
1074 }
1075
1076 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1077 return;
1078
1079 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1080 (usage->code == ABS_VOLUME)) {
1081 int count = abs(value);
1082 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1083 int i;
1084
1085 for (i = 0; i < count; i++) {
1086 input_event(input, EV_KEY, direction, 1);
1087 input_sync(input);
1088 input_event(input, EV_KEY, direction, 0);
1089 input_sync(input);
1090 }
1091 return;
1092 }
1093
1094 /*
1095 * Ignore out-of-range values as per HID specification,
1096 * section 5.10 and 6.2.25.
1097 *
1098 * The logical_minimum < logical_maximum check is done so that we
1099 * don't unintentionally discard values sent by devices which
1100 * don't specify logical min and max.
1101 */
1102 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1103 (field->logical_minimum < field->logical_maximum) &&
1104 (value < field->logical_minimum ||
1105 value > field->logical_maximum)) {
1106 dbg_hid("Ignoring out-of-range value %x\n", value);
1107 return;
1108 }
1109
1110 /*
1111 * Ignore reports for absolute data if the data didn't change. This is
1112 * not only an optimization but also fixes 'dead' key reports. Some
1113 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1114 * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1115 * can only have one of them physically available. The 'dead' keys
1116 * report constant 0. As all map to the same keycode, they'd confuse
1117 * the input layer. If we filter the 'dead' keys on the HID level, we
1118 * skip the keycode translation and only forward real events.
1119 */
1120 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1121 HID_MAIN_ITEM_BUFFERED_BYTE)) &&
1122 (field->flags & HID_MAIN_ITEM_VARIABLE) &&
1123 usage->usage_index < field->maxusage &&
1124 value == field->value[usage->usage_index])
1125 return;
1126
1127 /* report the usage code as scancode if the key status has changed */
1128 if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
1129 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1130
1131 input_event(input, usage->type, usage->code, value);
1132
1133 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
1134 input_event(input, usage->type, usage->code, 0);
1135 }
1136
1137 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1138 {
1139 struct hid_input *hidinput;
1140
1141 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1142 return;
1143
1144 list_for_each_entry(hidinput, &hid->inputs, list)
1145 input_sync(hidinput->input);
1146 }
1147 EXPORT_SYMBOL_GPL(hidinput_report_event);
1148
1149 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1150 {
1151 struct hid_report *report;
1152 int i, j;
1153
1154 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1155 for (i = 0; i < report->maxfield; i++) {
1156 *field = report->field[i];
1157 for (j = 0; j < (*field)->maxusage; j++)
1158 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1159 return j;
1160 }
1161 }
1162 return -1;
1163 }
1164 EXPORT_SYMBOL_GPL(hidinput_find_field);
1165
1166 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1167 {
1168 struct hid_report *report;
1169 struct hid_field *field;
1170 int i, j;
1171
1172 list_for_each_entry(report,
1173 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1174 list) {
1175 for (i = 0; i < report->maxfield; i++) {
1176 field = report->field[i];
1177 for (j = 0; j < field->maxusage; j++)
1178 if (field->usage[j].type == EV_LED)
1179 return field;
1180 }
1181 }
1182 return NULL;
1183 }
1184 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1185
1186 unsigned int hidinput_count_leds(struct hid_device *hid)
1187 {
1188 struct hid_report *report;
1189 struct hid_field *field;
1190 int i, j;
1191 unsigned int count = 0;
1192
1193 list_for_each_entry(report,
1194 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1195 list) {
1196 for (i = 0; i < report->maxfield; i++) {
1197 field = report->field[i];
1198 for (j = 0; j < field->maxusage; j++)
1199 if (field->usage[j].type == EV_LED &&
1200 field->value[j])
1201 count += 1;
1202 }
1203 }
1204 return count;
1205 }
1206 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1207
1208 static void hidinput_led_worker(struct work_struct *work)
1209 {
1210 struct hid_device *hid = container_of(work, struct hid_device,
1211 led_work);
1212 struct hid_field *field;
1213 struct hid_report *report;
1214 int len, ret;
1215 __u8 *buf;
1216
1217 field = hidinput_get_led_field(hid);
1218 if (!field)
1219 return;
1220
1221 /*
1222 * field->report is accessed unlocked regarding HID core. So there might
1223 * be another incoming SET-LED request from user-space, which changes
1224 * the LED state while we assemble our outgoing buffer. However, this
1225 * doesn't matter as hid_output_report() correctly converts it into a
1226 * boolean value no matter what information is currently set on the LED
1227 * field (even garbage). So the remote device will always get a valid
1228 * request.
1229 * And in case we send a wrong value, a next led worker is spawned
1230 * for every SET-LED request so the following worker will send the
1231 * correct value, guaranteed!
1232 */
1233
1234 report = field->report;
1235
1236 /* use custom SET_REPORT request if possible (asynchronous) */
1237 if (hid->ll_driver->request)
1238 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1239
1240 /* fall back to generic raw-output-report */
1241 len = hid_report_len(report);
1242 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1243 if (!buf)
1244 return;
1245
1246 hid_output_report(report, buf);
1247 /* synchronous output report */
1248 ret = hid_hw_output_report(hid, buf, len);
1249 if (ret == -ENOSYS)
1250 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1251 HID_REQ_SET_REPORT);
1252 kfree(buf);
1253 }
1254
1255 static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1256 unsigned int code, int value)
1257 {
1258 struct hid_device *hid = input_get_drvdata(dev);
1259 struct hid_field *field;
1260 int offset;
1261
1262 if (type == EV_FF)
1263 return input_ff_event(dev, type, code, value);
1264
1265 if (type != EV_LED)
1266 return -1;
1267
1268 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1269 hid_warn(dev, "event field not found\n");
1270 return -1;
1271 }
1272
1273 hid_set_field(field, offset, value);
1274
1275 schedule_work(&hid->led_work);
1276 return 0;
1277 }
1278
1279 static int hidinput_open(struct input_dev *dev)
1280 {
1281 struct hid_device *hid = input_get_drvdata(dev);
1282
1283 return hid_hw_open(hid);
1284 }
1285
1286 static void hidinput_close(struct input_dev *dev)
1287 {
1288 struct hid_device *hid = input_get_drvdata(dev);
1289
1290 hid_hw_close(hid);
1291 }
1292
1293 static void report_features(struct hid_device *hid)
1294 {
1295 struct hid_driver *drv = hid->driver;
1296 struct hid_report_enum *rep_enum;
1297 struct hid_report *rep;
1298 int i, j;
1299
1300 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1301 list_for_each_entry(rep, &rep_enum->report_list, list)
1302 for (i = 0; i < rep->maxfield; i++) {
1303 /* Ignore if report count is out of bounds. */
1304 if (rep->field[i]->report_count < 1)
1305 continue;
1306
1307 for (j = 0; j < rep->field[i]->maxusage; j++) {
1308 /* Verify if Battery Strength feature is available */
1309 hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);
1310
1311 if (drv->feature_mapping)
1312 drv->feature_mapping(hid, rep->field[i],
1313 rep->field[i]->usage + j);
1314 }
1315 }
1316 }
1317
1318 static struct hid_input *hidinput_allocate(struct hid_device *hid)
1319 {
1320 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1321 struct input_dev *input_dev = input_allocate_device();
1322 if (!hidinput || !input_dev) {
1323 kfree(hidinput);
1324 input_free_device(input_dev);
1325 hid_err(hid, "Out of memory during hid input probe\n");
1326 return NULL;
1327 }
1328
1329 input_set_drvdata(input_dev, hid);
1330 input_dev->event = hidinput_input_event;
1331 input_dev->open = hidinput_open;
1332 input_dev->close = hidinput_close;
1333 input_dev->setkeycode = hidinput_setkeycode;
1334 input_dev->getkeycode = hidinput_getkeycode;
1335
1336 input_dev->name = hid->name;
1337 input_dev->phys = hid->phys;
1338 input_dev->uniq = hid->uniq;
1339 input_dev->id.bustype = hid->bus;
1340 input_dev->id.vendor = hid->vendor;
1341 input_dev->id.product = hid->product;
1342 input_dev->id.version = hid->version;
1343 input_dev->dev.parent = &hid->dev;
1344 hidinput->input = input_dev;
1345 list_add_tail(&hidinput->list, &hid->inputs);
1346
1347 return hidinput;
1348 }
1349
1350 static bool hidinput_has_been_populated(struct hid_input *hidinput)
1351 {
1352 int i;
1353 unsigned long r = 0;
1354
1355 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
1356 r |= hidinput->input->evbit[i];
1357
1358 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
1359 r |= hidinput->input->keybit[i];
1360
1361 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
1362 r |= hidinput->input->relbit[i];
1363
1364 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
1365 r |= hidinput->input->absbit[i];
1366
1367 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
1368 r |= hidinput->input->mscbit[i];
1369
1370 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
1371 r |= hidinput->input->ledbit[i];
1372
1373 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
1374 r |= hidinput->input->sndbit[i];
1375
1376 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
1377 r |= hidinput->input->ffbit[i];
1378
1379 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
1380 r |= hidinput->input->swbit[i];
1381
1382 return !!r;
1383 }
1384
1385 static void hidinput_cleanup_hidinput(struct hid_device *hid,
1386 struct hid_input *hidinput)
1387 {
1388 struct hid_report *report;
1389 int i, k;
1390
1391 list_del(&hidinput->list);
1392 input_free_device(hidinput->input);
1393
1394 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1395 if (k == HID_OUTPUT_REPORT &&
1396 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1397 continue;
1398
1399 list_for_each_entry(report, &hid->report_enum[k].report_list,
1400 list) {
1401
1402 for (i = 0; i < report->maxfield; i++)
1403 if (report->field[i]->hidinput == hidinput)
1404 report->field[i]->hidinput = NULL;
1405 }
1406 }
1407
1408 kfree(hidinput);
1409 }
1410
1411 /*
1412 * Register the input device; print a message.
1413 * Configure the input layer interface
1414 * Read all reports and initialize the absolute field values.
1415 */
1416
1417 int hidinput_connect(struct hid_device *hid, unsigned int force)
1418 {
1419 struct hid_driver *drv = hid->driver;
1420 struct hid_report *report;
1421 struct hid_input *hidinput = NULL;
1422 int i, j, k;
1423
1424 INIT_LIST_HEAD(&hid->inputs);
1425 INIT_WORK(&hid->led_work, hidinput_led_worker);
1426
1427 if (!force) {
1428 for (i = 0; i < hid->maxcollection; i++) {
1429 struct hid_collection *col = &hid->collection[i];
1430 if (col->type == HID_COLLECTION_APPLICATION ||
1431 col->type == HID_COLLECTION_PHYSICAL)
1432 if (IS_INPUT_APPLICATION(col->usage))
1433 break;
1434 }
1435
1436 if (i == hid->maxcollection)
1437 return -1;
1438 }
1439
1440 report_features(hid);
1441
1442 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1443 if (k == HID_OUTPUT_REPORT &&
1444 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1445 continue;
1446
1447 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1448
1449 if (!report->maxfield)
1450 continue;
1451
1452 if (!hidinput) {
1453 hidinput = hidinput_allocate(hid);
1454 if (!hidinput)
1455 goto out_unwind;
1456 }
1457
1458 for (i = 0; i < report->maxfield; i++)
1459 for (j = 0; j < report->field[i]->maxusage; j++)
1460 hidinput_configure_usage(hidinput, report->field[i],
1461 report->field[i]->usage + j);
1462
1463 if ((hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1464 !hidinput_has_been_populated(hidinput))
1465 continue;
1466
1467 if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
1468 /* This will leave hidinput NULL, so that it
1469 * allocates another one if we have more inputs on
1470 * the same interface. Some devices (e.g. Happ's
1471 * UGCI) cram a lot of unrelated inputs into the
1472 * same interface. */
1473 hidinput->report = report;
1474 if (drv->input_configured)
1475 drv->input_configured(hid, hidinput);
1476 if (input_register_device(hidinput->input))
1477 goto out_cleanup;
1478 hidinput = NULL;
1479 }
1480 }
1481 }
1482
1483 if (hidinput && (hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1484 !hidinput_has_been_populated(hidinput)) {
1485 /* no need to register an input device not populated */
1486 hidinput_cleanup_hidinput(hid, hidinput);
1487 hidinput = NULL;
1488 }
1489
1490 if (list_empty(&hid->inputs)) {
1491 hid_err(hid, "No inputs registered, leaving\n");
1492 goto out_unwind;
1493 }
1494
1495 if (hidinput) {
1496 if (drv->input_configured)
1497 drv->input_configured(hid, hidinput);
1498 if (input_register_device(hidinput->input))
1499 goto out_cleanup;
1500 }
1501
1502 return 0;
1503
1504 out_cleanup:
1505 list_del(&hidinput->list);
1506 input_free_device(hidinput->input);
1507 kfree(hidinput);
1508 out_unwind:
1509 /* unwind the ones we already registered */
1510 hidinput_disconnect(hid);
1511
1512 return -1;
1513 }
1514 EXPORT_SYMBOL_GPL(hidinput_connect);
1515
1516 void hidinput_disconnect(struct hid_device *hid)
1517 {
1518 struct hid_input *hidinput, *next;
1519
1520 hidinput_cleanup_battery(hid);
1521
1522 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1523 list_del(&hidinput->list);
1524 input_unregister_device(hidinput->input);
1525 kfree(hidinput);
1526 }
1527
1528 /* led_work is spawned by input_dev callbacks, but doesn't access the
1529 * parent input_dev at all. Once all input devices are removed, we
1530 * know that led_work will never get restarted, so we can cancel it
1531 * synchronously and are safe. */
1532 cancel_work_sync(&hid->led_work);
1533 }
1534 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1535
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