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Merge tag 'vfio-v4.4-rc1' of git://github.com/awilliam/linux-vfio
[mirror_ubuntu-bionic-kernel.git] / drivers / hid / hid-input.c
1 /*
2 * Copyright (c) 2000-2001 Vojtech Pavlik
3 * Copyright (c) 2006-2010 Jiri Kosina
4 *
5 * HID to Linux Input mapping
6 */
7
8 /*
9 * This program is free software; you can redistribute it and/or modify
10 * it under the terms of the GNU General Public License as published by
11 * the Free Software Foundation; either version 2 of the License, or
12 * (at your option) any later version.
13 *
14 * This program is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 * GNU General Public License for more details.
18 *
19 * You should have received a copy of the GNU General Public License
20 * along with this program; if not, write to the Free Software
21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 *
23 * Should you need to contact me, the author, you can do so either by
24 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
25 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
26 */
27
28 #include <linux/module.h>
29 #include <linux/slab.h>
30 #include <linux/kernel.h>
31
32 #include <linux/hid.h>
33 #include <linux/hid-debug.h>
34
35 #include "hid-ids.h"
36
37 #define unk KEY_UNKNOWN
38
39 static const unsigned char hid_keyboard[256] = {
40 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
41 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
42 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
43 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
44 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
45 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
46 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
47 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
48 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
49 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,
50 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
51 unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk,
52 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
53 unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk,
54 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
55 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
56 };
57
58 static const struct {
59 __s32 x;
60 __s32 y;
61 } hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
62
63 #define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
64 #define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
65 #define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
66 #define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
67
68 #define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
69 &max, EV_ABS, (c))
70 #define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \
71 &max, EV_KEY, (c))
72
73 static bool match_scancode(struct hid_usage *usage,
74 unsigned int cur_idx, unsigned int scancode)
75 {
76 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
77 }
78
79 static bool match_keycode(struct hid_usage *usage,
80 unsigned int cur_idx, unsigned int keycode)
81 {
82 /*
83 * We should exclude unmapped usages when doing lookup by keycode.
84 */
85 return (usage->type == EV_KEY && usage->code == keycode);
86 }
87
88 static bool match_index(struct hid_usage *usage,
89 unsigned int cur_idx, unsigned int idx)
90 {
91 return cur_idx == idx;
92 }
93
94 typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
95 unsigned int cur_idx, unsigned int val);
96
97 static struct hid_usage *hidinput_find_key(struct hid_device *hid,
98 hid_usage_cmp_t match,
99 unsigned int value,
100 unsigned int *usage_idx)
101 {
102 unsigned int i, j, k, cur_idx = 0;
103 struct hid_report *report;
104 struct hid_usage *usage;
105
106 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
107 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
108 for (i = 0; i < report->maxfield; i++) {
109 for (j = 0; j < report->field[i]->maxusage; j++) {
110 usage = report->field[i]->usage + j;
111 if (usage->type == EV_KEY || usage->type == 0) {
112 if (match(usage, cur_idx, value)) {
113 if (usage_idx)
114 *usage_idx = cur_idx;
115 return usage;
116 }
117 cur_idx++;
118 }
119 }
120 }
121 }
122 }
123 return NULL;
124 }
125
126 static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
127 const struct input_keymap_entry *ke,
128 unsigned int *index)
129 {
130 struct hid_usage *usage;
131 unsigned int scancode;
132
133 if (ke->flags & INPUT_KEYMAP_BY_INDEX)
134 usage = hidinput_find_key(hid, match_index, ke->index, index);
135 else if (input_scancode_to_scalar(ke, &scancode) == 0)
136 usage = hidinput_find_key(hid, match_scancode, scancode, index);
137 else
138 usage = NULL;
139
140 return usage;
141 }
142
143 static int hidinput_getkeycode(struct input_dev *dev,
144 struct input_keymap_entry *ke)
145 {
146 struct hid_device *hid = input_get_drvdata(dev);
147 struct hid_usage *usage;
148 unsigned int scancode, index;
149
150 usage = hidinput_locate_usage(hid, ke, &index);
151 if (usage) {
152 ke->keycode = usage->type == EV_KEY ?
153 usage->code : KEY_RESERVED;
154 ke->index = index;
155 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
156 ke->len = sizeof(scancode);
157 memcpy(ke->scancode, &scancode, sizeof(scancode));
158 return 0;
159 }
160
161 return -EINVAL;
162 }
163
164 static int hidinput_setkeycode(struct input_dev *dev,
165 const struct input_keymap_entry *ke,
166 unsigned int *old_keycode)
167 {
168 struct hid_device *hid = input_get_drvdata(dev);
169 struct hid_usage *usage;
170
171 usage = hidinput_locate_usage(hid, ke, NULL);
172 if (usage) {
173 *old_keycode = usage->type == EV_KEY ?
174 usage->code : KEY_RESERVED;
175 usage->code = ke->keycode;
176
177 clear_bit(*old_keycode, dev->keybit);
178 set_bit(usage->code, dev->keybit);
179 dbg_hid("Assigned keycode %d to HID usage code %x\n",
180 usage->code, usage->hid);
181
182 /*
183 * Set the keybit for the old keycode if the old keycode is used
184 * by another key
185 */
186 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
187 set_bit(*old_keycode, dev->keybit);
188
189 return 0;
190 }
191
192 return -EINVAL;
193 }
194
195
196 /**
197 * hidinput_calc_abs_res - calculate an absolute axis resolution
198 * @field: the HID report field to calculate resolution for
199 * @code: axis code
200 *
201 * The formula is:
202 * (logical_maximum - logical_minimum)
203 * resolution = ----------------------------------------------------------
204 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent
205 *
206 * as seen in the HID specification v1.11 6.2.2.7 Global Items.
207 *
208 * Only exponent 1 length units are processed. Centimeters and inches are
209 * converted to millimeters. Degrees are converted to radians.
210 */
211 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
212 {
213 __s32 unit_exponent = field->unit_exponent;
214 __s32 logical_extents = field->logical_maximum -
215 field->logical_minimum;
216 __s32 physical_extents = field->physical_maximum -
217 field->physical_minimum;
218 __s32 prev;
219
220 /* Check if the extents are sane */
221 if (logical_extents <= 0 || physical_extents <= 0)
222 return 0;
223
224 /*
225 * Verify and convert units.
226 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
227 */
228 switch (code) {
229 case ABS_X:
230 case ABS_Y:
231 case ABS_Z:
232 case ABS_MT_POSITION_X:
233 case ABS_MT_POSITION_Y:
234 case ABS_MT_TOOL_X:
235 case ABS_MT_TOOL_Y:
236 case ABS_MT_TOUCH_MAJOR:
237 case ABS_MT_TOUCH_MINOR:
238 if (field->unit == 0x11) { /* If centimeters */
239 /* Convert to millimeters */
240 unit_exponent += 1;
241 } else if (field->unit == 0x13) { /* If inches */
242 /* Convert to millimeters */
243 prev = physical_extents;
244 physical_extents *= 254;
245 if (physical_extents < prev)
246 return 0;
247 unit_exponent -= 1;
248 } else {
249 return 0;
250 }
251 break;
252
253 case ABS_RX:
254 case ABS_RY:
255 case ABS_RZ:
256 case ABS_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 = power_supply_get_drvdata(psy);
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_desc *psy_desc = NULL;
401 struct power_supply_config psy_cfg = { .drv_data = dev, };
402 unsigned quirks;
403 s32 min, max;
404
405 if (field->usage->hid != HID_DC_BATTERYSTRENGTH)
406 return false; /* no match */
407
408 if (dev->battery != NULL)
409 goto out; /* already initialized? */
410
411 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
412 if (psy_desc == NULL)
413 goto out;
414
415 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq);
416 if (psy_desc->name == NULL) {
417 kfree(psy_desc);
418 goto out;
419 }
420
421 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
422 psy_desc->properties = hidinput_battery_props;
423 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
424 psy_desc->use_for_apm = 0;
425 psy_desc->get_property = hidinput_get_battery_property;
426
427 quirks = find_battery_quirk(dev);
428
429 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
430 dev->bus, dev->vendor, dev->product, dev->version, quirks);
431
432 min = field->logical_minimum;
433 max = field->logical_maximum;
434
435 if (quirks & HID_BATTERY_QUIRK_PERCENT) {
436 min = 0;
437 max = 100;
438 }
439
440 if (quirks & HID_BATTERY_QUIRK_FEATURE)
441 report_type = HID_FEATURE_REPORT;
442
443 dev->battery_min = min;
444 dev->battery_max = max;
445 dev->battery_report_type = report_type;
446 dev->battery_report_id = field->report->id;
447
448 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
449 if (IS_ERR(dev->battery)) {
450 hid_warn(dev, "can't register power supply: %ld\n",
451 PTR_ERR(dev->battery));
452 kfree(psy_desc->name);
453 kfree(psy_desc);
454 dev->battery = NULL;
455 } else {
456 power_supply_powers(dev->battery, &dev->dev);
457 }
458
459 out:
460 return true;
461 }
462
463 static void hidinput_cleanup_battery(struct hid_device *dev)
464 {
465 const struct power_supply_desc *psy_desc;
466
467 if (!dev->battery)
468 return;
469
470 psy_desc = dev->battery->desc;
471 power_supply_unregister(dev->battery);
472 kfree(psy_desc->name);
473 kfree(psy_desc);
474 dev->battery = NULL;
475 }
476 #else /* !CONFIG_HID_BATTERY_STRENGTH */
477 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
478 struct hid_field *field)
479 {
480 return false;
481 }
482
483 static void hidinput_cleanup_battery(struct hid_device *dev)
484 {
485 }
486 #endif /* CONFIG_HID_BATTERY_STRENGTH */
487
488 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
489 struct hid_usage *usage)
490 {
491 struct input_dev *input = hidinput->input;
492 struct hid_device *device = input_get_drvdata(input);
493 int max = 0, code;
494 unsigned long *bit = NULL;
495
496 field->hidinput = hidinput;
497
498 if (field->flags & HID_MAIN_ITEM_CONSTANT)
499 goto ignore;
500
501 /* Ignore if report count is out of bounds. */
502 if (field->report_count < 1)
503 goto ignore;
504
505 /* only LED usages are supported in output fields */
506 if (field->report_type == HID_OUTPUT_REPORT &&
507 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
508 goto ignore;
509 }
510
511 if (device->driver->input_mapping) {
512 int ret = device->driver->input_mapping(device, hidinput, field,
513 usage, &bit, &max);
514 if (ret > 0)
515 goto mapped;
516 if (ret < 0)
517 goto ignore;
518 }
519
520 switch (usage->hid & HID_USAGE_PAGE) {
521 case HID_UP_UNDEFINED:
522 goto ignore;
523
524 case HID_UP_KEYBOARD:
525 set_bit(EV_REP, input->evbit);
526
527 if ((usage->hid & HID_USAGE) < 256) {
528 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
529 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
530 } else
531 map_key(KEY_UNKNOWN);
532
533 break;
534
535 case HID_UP_BUTTON:
536 code = ((usage->hid - 1) & HID_USAGE);
537
538 switch (field->application) {
539 case HID_GD_MOUSE:
540 case HID_GD_POINTER: code += BTN_MOUSE; break;
541 case HID_GD_JOYSTICK:
542 if (code <= 0xf)
543 code += BTN_JOYSTICK;
544 else
545 code += BTN_TRIGGER_HAPPY - 0x10;
546 break;
547 case HID_GD_GAMEPAD:
548 if (code <= 0xf)
549 code += BTN_GAMEPAD;
550 else
551 code += BTN_TRIGGER_HAPPY - 0x10;
552 break;
553 default:
554 switch (field->physical) {
555 case HID_GD_MOUSE:
556 case HID_GD_POINTER: code += BTN_MOUSE; break;
557 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
558 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
559 default: code += BTN_MISC;
560 }
561 }
562
563 map_key(code);
564 break;
565
566 case HID_UP_SIMULATION:
567 switch (usage->hid & 0xffff) {
568 case 0xba: map_abs(ABS_RUDDER); break;
569 case 0xbb: map_abs(ABS_THROTTLE); break;
570 case 0xc4: map_abs(ABS_GAS); break;
571 case 0xc5: map_abs(ABS_BRAKE); break;
572 case 0xc8: map_abs(ABS_WHEEL); break;
573 default: goto ignore;
574 }
575 break;
576
577 case HID_UP_GENDESK:
578 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
579 switch (usage->hid & 0xf) {
580 case 0x1: map_key_clear(KEY_POWER); break;
581 case 0x2: map_key_clear(KEY_SLEEP); break;
582 case 0x3: map_key_clear(KEY_WAKEUP); break;
583 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
584 case 0x5: map_key_clear(KEY_MENU); break;
585 case 0x6: map_key_clear(KEY_PROG1); break;
586 case 0x7: map_key_clear(KEY_HELP); break;
587 case 0x8: map_key_clear(KEY_EXIT); break;
588 case 0x9: map_key_clear(KEY_SELECT); break;
589 case 0xa: map_key_clear(KEY_RIGHT); break;
590 case 0xb: map_key_clear(KEY_LEFT); break;
591 case 0xc: map_key_clear(KEY_UP); break;
592 case 0xd: map_key_clear(KEY_DOWN); break;
593 case 0xe: map_key_clear(KEY_POWER2); break;
594 case 0xf: map_key_clear(KEY_RESTART); break;
595 default: goto unknown;
596 }
597 break;
598 }
599
600 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
601 switch (usage->hid) {
602 case HID_GD_UP: usage->hat_dir = 1; break;
603 case HID_GD_DOWN: usage->hat_dir = 5; break;
604 case HID_GD_RIGHT: usage->hat_dir = 3; break;
605 case HID_GD_LEFT: usage->hat_dir = 7; break;
606 default: goto unknown;
607 }
608 if (field->dpad) {
609 map_abs(field->dpad);
610 goto ignore;
611 }
612 map_abs(ABS_HAT0X);
613 break;
614 }
615
616 switch (usage->hid) {
617 /* These usage IDs map directly to the usage codes. */
618 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
619 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
620 if (field->flags & HID_MAIN_ITEM_RELATIVE)
621 map_rel(usage->hid & 0xf);
622 else
623 map_abs_clear(usage->hid & 0xf);
624 break;
625
626 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
627 if (field->flags & HID_MAIN_ITEM_RELATIVE)
628 map_rel(usage->hid & 0xf);
629 else
630 map_abs(usage->hid & 0xf);
631 break;
632
633 case HID_GD_HATSWITCH:
634 usage->hat_min = field->logical_minimum;
635 usage->hat_max = field->logical_maximum;
636 map_abs(ABS_HAT0X);
637 break;
638
639 case HID_GD_START: map_key_clear(BTN_START); break;
640 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
641
642 default: goto unknown;
643 }
644
645 break;
646
647 case HID_UP_LED:
648 switch (usage->hid & 0xffff) { /* HID-Value: */
649 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
650 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
651 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
652 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
653 case 0x05: map_led (LED_KANA); break; /* "Kana" */
654 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
655 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
656 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
657 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
658 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
659 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
660
661 default: goto ignore;
662 }
663 break;
664
665 case HID_UP_DIGITIZER:
666 switch (usage->hid & 0xff) {
667 case 0x00: /* Undefined */
668 goto ignore;
669
670 case 0x30: /* TipPressure */
671 if (!test_bit(BTN_TOUCH, input->keybit)) {
672 device->quirks |= HID_QUIRK_NOTOUCH;
673 set_bit(EV_KEY, input->evbit);
674 set_bit(BTN_TOUCH, input->keybit);
675 }
676 map_abs_clear(ABS_PRESSURE);
677 break;
678
679 case 0x32: /* InRange */
680 switch (field->physical & 0xff) {
681 case 0x21: map_key(BTN_TOOL_MOUSE); break;
682 case 0x22: map_key(BTN_TOOL_FINGER); break;
683 default: map_key(BTN_TOOL_PEN); break;
684 }
685 break;
686
687 case 0x3c: /* Invert */
688 map_key_clear(BTN_TOOL_RUBBER);
689 break;
690
691 case 0x3d: /* X Tilt */
692 map_abs_clear(ABS_TILT_X);
693 break;
694
695 case 0x3e: /* Y Tilt */
696 map_abs_clear(ABS_TILT_Y);
697 break;
698
699 case 0x33: /* Touch */
700 case 0x42: /* TipSwitch */
701 case 0x43: /* TipSwitch2 */
702 device->quirks &= ~HID_QUIRK_NOTOUCH;
703 map_key_clear(BTN_TOUCH);
704 break;
705
706 case 0x44: /* BarrelSwitch */
707 map_key_clear(BTN_STYLUS);
708 break;
709
710 case 0x46: /* TabletPick */
711 case 0x5a: /* SecondaryBarrelSwitch */
712 map_key_clear(BTN_STYLUS2);
713 break;
714
715 case 0x5b: /* TransducerSerialNumber */
716 usage->type = EV_MSC;
717 usage->code = MSC_SERIAL;
718 bit = input->mscbit;
719 max = MSC_MAX;
720 break;
721
722 default: goto unknown;
723 }
724 break;
725
726 case HID_UP_TELEPHONY:
727 switch (usage->hid & HID_USAGE) {
728 case 0x2f: map_key_clear(KEY_MICMUTE); break;
729 case 0xb0: map_key_clear(KEY_NUMERIC_0); break;
730 case 0xb1: map_key_clear(KEY_NUMERIC_1); break;
731 case 0xb2: map_key_clear(KEY_NUMERIC_2); break;
732 case 0xb3: map_key_clear(KEY_NUMERIC_3); break;
733 case 0xb4: map_key_clear(KEY_NUMERIC_4); break;
734 case 0xb5: map_key_clear(KEY_NUMERIC_5); break;
735 case 0xb6: map_key_clear(KEY_NUMERIC_6); break;
736 case 0xb7: map_key_clear(KEY_NUMERIC_7); break;
737 case 0xb8: map_key_clear(KEY_NUMERIC_8); break;
738 case 0xb9: map_key_clear(KEY_NUMERIC_9); break;
739 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;
740 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;
741 case 0xbc: map_key_clear(KEY_NUMERIC_A); break;
742 case 0xbd: map_key_clear(KEY_NUMERIC_B); break;
743 case 0xbe: map_key_clear(KEY_NUMERIC_C); break;
744 case 0xbf: map_key_clear(KEY_NUMERIC_D); break;
745 default: goto ignore;
746 }
747 break;
748
749 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
750 switch (usage->hid & HID_USAGE) {
751 case 0x000: goto ignore;
752 case 0x030: map_key_clear(KEY_POWER); break;
753 case 0x031: map_key_clear(KEY_RESTART); break;
754 case 0x032: map_key_clear(KEY_SLEEP); break;
755 case 0x034: map_key_clear(KEY_SLEEP); break;
756 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
757 case 0x036: map_key_clear(BTN_MISC); break;
758
759 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
760 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
761 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
762 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
763 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
764 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
765 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
766 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
767 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
768
769 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
770 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
771 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
772 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
773 case 0x069: map_key_clear(KEY_RED); break;
774 case 0x06a: map_key_clear(KEY_GREEN); break;
775 case 0x06b: map_key_clear(KEY_BLUE); break;
776 case 0x06c: map_key_clear(KEY_YELLOW); break;
777 case 0x06d: map_key_clear(KEY_ZOOM); break;
778
779 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
780 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
781 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
782 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
783 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
784 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
785
786 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
787 case 0x083: map_key_clear(KEY_LAST); break;
788 case 0x084: map_key_clear(KEY_ENTER); break;
789 case 0x088: map_key_clear(KEY_PC); break;
790 case 0x089: map_key_clear(KEY_TV); break;
791 case 0x08a: map_key_clear(KEY_WWW); break;
792 case 0x08b: map_key_clear(KEY_DVD); break;
793 case 0x08c: map_key_clear(KEY_PHONE); break;
794 case 0x08d: map_key_clear(KEY_PROGRAM); break;
795 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
796 case 0x08f: map_key_clear(KEY_GAMES); break;
797 case 0x090: map_key_clear(KEY_MEMO); break;
798 case 0x091: map_key_clear(KEY_CD); break;
799 case 0x092: map_key_clear(KEY_VCR); break;
800 case 0x093: map_key_clear(KEY_TUNER); break;
801 case 0x094: map_key_clear(KEY_EXIT); break;
802 case 0x095: map_key_clear(KEY_HELP); break;
803 case 0x096: map_key_clear(KEY_TAPE); break;
804 case 0x097: map_key_clear(KEY_TV2); break;
805 case 0x098: map_key_clear(KEY_SAT); break;
806 case 0x09a: map_key_clear(KEY_PVR); break;
807
808 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
809 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
810 case 0x0a0: map_key_clear(KEY_VCR2); break;
811
812 case 0x0b0: map_key_clear(KEY_PLAY); break;
813 case 0x0b1: map_key_clear(KEY_PAUSE); break;
814 case 0x0b2: map_key_clear(KEY_RECORD); break;
815 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
816 case 0x0b4: map_key_clear(KEY_REWIND); break;
817 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
818 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
819 case 0x0b7: map_key_clear(KEY_STOPCD); break;
820 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
821 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
822 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
823 case 0x0bf: map_key_clear(KEY_SLOW); break;
824
825 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
826 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
827 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
828 case 0x0e2: map_key_clear(KEY_MUTE); break;
829 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
830 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
831 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
832 case 0x0f5: map_key_clear(KEY_SLOW); break;
833
834 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
835 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
836 case 0x183: map_key_clear(KEY_CONFIG); break;
837 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
838 case 0x185: map_key_clear(KEY_EDITOR); break;
839 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
840 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
841 case 0x188: map_key_clear(KEY_PRESENTATION); break;
842 case 0x189: map_key_clear(KEY_DATABASE); break;
843 case 0x18a: map_key_clear(KEY_MAIL); break;
844 case 0x18b: map_key_clear(KEY_NEWS); break;
845 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
846 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
847 case 0x18e: map_key_clear(KEY_CALENDAR); break;
848 case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
849 case 0x190: map_key_clear(KEY_JOURNAL); break;
850 case 0x191: map_key_clear(KEY_FINANCE); break;
851 case 0x192: map_key_clear(KEY_CALC); break;
852 case 0x193: map_key_clear(KEY_PLAYER); break;
853 case 0x194: map_key_clear(KEY_FILE); break;
854 case 0x196: map_key_clear(KEY_WWW); break;
855 case 0x199: map_key_clear(KEY_CHAT); break;
856 case 0x19c: map_key_clear(KEY_LOGOFF); break;
857 case 0x19e: map_key_clear(KEY_COFFEE); break;
858 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
859 case 0x1a2: map_key_clear(KEY_APPSELECT); break;
860 case 0x1a3: map_key_clear(KEY_NEXT); break;
861 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
862 case 0x1a6: map_key_clear(KEY_HELP); break;
863 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
864 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
865 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
866 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
867 case 0x1b4: map_key_clear(KEY_FILE); break;
868 case 0x1b6: map_key_clear(KEY_IMAGES); break;
869 case 0x1b7: map_key_clear(KEY_AUDIO); break;
870 case 0x1b8: map_key_clear(KEY_VIDEO); break;
871 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
872 case 0x1bd: map_key_clear(KEY_INFO); break;
873 case 0x201: map_key_clear(KEY_NEW); break;
874 case 0x202: map_key_clear(KEY_OPEN); break;
875 case 0x203: map_key_clear(KEY_CLOSE); break;
876 case 0x204: map_key_clear(KEY_EXIT); break;
877 case 0x207: map_key_clear(KEY_SAVE); break;
878 case 0x208: map_key_clear(KEY_PRINT); break;
879 case 0x209: map_key_clear(KEY_PROPS); break;
880 case 0x21a: map_key_clear(KEY_UNDO); break;
881 case 0x21b: map_key_clear(KEY_COPY); break;
882 case 0x21c: map_key_clear(KEY_CUT); break;
883 case 0x21d: map_key_clear(KEY_PASTE); break;
884 case 0x21f: map_key_clear(KEY_FIND); break;
885 case 0x221: map_key_clear(KEY_SEARCH); break;
886 case 0x222: map_key_clear(KEY_GOTO); break;
887 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
888 case 0x224: map_key_clear(KEY_BACK); break;
889 case 0x225: map_key_clear(KEY_FORWARD); break;
890 case 0x226: map_key_clear(KEY_STOP); break;
891 case 0x227: map_key_clear(KEY_REFRESH); break;
892 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
893 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
894 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
895 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
896 case 0x233: map_key_clear(KEY_SCROLLUP); break;
897 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
898 case 0x238: map_rel(REL_HWHEEL); break;
899 case 0x23d: map_key_clear(KEY_EDIT); break;
900 case 0x25f: map_key_clear(KEY_CANCEL); break;
901 case 0x269: map_key_clear(KEY_INSERT); break;
902 case 0x26a: map_key_clear(KEY_DELETE); break;
903 case 0x279: map_key_clear(KEY_REDO); break;
904
905 case 0x289: map_key_clear(KEY_REPLY); break;
906 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
907 case 0x28c: map_key_clear(KEY_SEND); break;
908
909 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
910 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
911 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
912 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
913 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
914 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
915
916 default: map_key_clear(KEY_UNKNOWN);
917 }
918 break;
919
920 case HID_UP_GENDEVCTRLS:
921 if (hidinput_setup_battery(device, HID_INPUT_REPORT, field))
922 goto ignore;
923 else
924 goto unknown;
925 break;
926
927 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
928 set_bit(EV_REP, input->evbit);
929 switch (usage->hid & HID_USAGE) {
930 case 0x021: map_key_clear(KEY_PRINT); break;
931 case 0x070: map_key_clear(KEY_HP); break;
932 case 0x071: map_key_clear(KEY_CAMERA); break;
933 case 0x072: map_key_clear(KEY_SOUND); break;
934 case 0x073: map_key_clear(KEY_QUESTION); break;
935 case 0x080: map_key_clear(KEY_EMAIL); break;
936 case 0x081: map_key_clear(KEY_CHAT); break;
937 case 0x082: map_key_clear(KEY_SEARCH); break;
938 case 0x083: map_key_clear(KEY_CONNECT); break;
939 case 0x084: map_key_clear(KEY_FINANCE); break;
940 case 0x085: map_key_clear(KEY_SPORT); break;
941 case 0x086: map_key_clear(KEY_SHOP); break;
942 default: goto ignore;
943 }
944 break;
945
946 case HID_UP_HPVENDOR2:
947 set_bit(EV_REP, input->evbit);
948 switch (usage->hid & HID_USAGE) {
949 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
950 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
951 default: goto ignore;
952 }
953 break;
954
955 case HID_UP_MSVENDOR:
956 goto ignore;
957
958 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
959 set_bit(EV_REP, input->evbit);
960 goto ignore;
961
962 case HID_UP_LOGIVENDOR:
963 goto ignore;
964
965 case HID_UP_PID:
966 switch (usage->hid & HID_USAGE) {
967 case 0xa4: map_key_clear(BTN_DEAD); break;
968 default: goto ignore;
969 }
970 break;
971
972 default:
973 unknown:
974 if (field->report_size == 1) {
975 if (field->report->type == HID_OUTPUT_REPORT) {
976 map_led(LED_MISC);
977 break;
978 }
979 map_key(BTN_MISC);
980 break;
981 }
982 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
983 map_rel(REL_MISC);
984 break;
985 }
986 map_abs(ABS_MISC);
987 break;
988 }
989
990 mapped:
991 if (device->driver->input_mapped && device->driver->input_mapped(device,
992 hidinput, field, usage, &bit, &max) < 0)
993 goto ignore;
994
995 set_bit(usage->type, input->evbit);
996
997 while (usage->code <= max && test_and_set_bit(usage->code, bit))
998 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
999
1000 if (usage->code > max)
1001 goto ignore;
1002
1003
1004 if (usage->type == EV_ABS) {
1005
1006 int a = field->logical_minimum;
1007 int b = field->logical_maximum;
1008
1009 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1010 a = field->logical_minimum = 0;
1011 b = field->logical_maximum = 255;
1012 }
1013
1014 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1015 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
1016 else input_set_abs_params(input, usage->code, a, b, 0, 0);
1017
1018 input_abs_set_res(input, usage->code,
1019 hidinput_calc_abs_res(field, usage->code));
1020
1021 /* use a larger default input buffer for MT devices */
1022 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1023 input_set_events_per_packet(input, 60);
1024 }
1025
1026 if (usage->type == EV_ABS &&
1027 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
1028 int i;
1029 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1030 input_set_abs_params(input, i, -1, 1, 0, 0);
1031 set_bit(i, input->absbit);
1032 }
1033 if (usage->hat_dir && !field->dpad)
1034 field->dpad = usage->code;
1035 }
1036
1037 /* for those devices which produce Consumer volume usage as relative,
1038 * we emulate pressing volumeup/volumedown appropriate number of times
1039 * in hidinput_hid_event()
1040 */
1041 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1042 (usage->code == ABS_VOLUME)) {
1043 set_bit(KEY_VOLUMEUP, input->keybit);
1044 set_bit(KEY_VOLUMEDOWN, input->keybit);
1045 }
1046
1047 if (usage->type == EV_KEY) {
1048 set_bit(EV_MSC, input->evbit);
1049 set_bit(MSC_SCAN, input->mscbit);
1050 }
1051
1052 ignore:
1053 return;
1054
1055 }
1056
1057 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1058 {
1059 struct input_dev *input;
1060 unsigned *quirks = &hid->quirks;
1061
1062 if (!field->hidinput)
1063 return;
1064
1065 input = field->hidinput->input;
1066
1067 if (!usage->type)
1068 return;
1069
1070 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1071 int hat_dir = usage->hat_dir;
1072 if (!hat_dir)
1073 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1074 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1075 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
1076 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1077 return;
1078 }
1079
1080 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
1081 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
1082 return;
1083 }
1084
1085 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
1086 if (value) {
1087 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
1088 return;
1089 }
1090 input_event(input, usage->type, usage->code, 0);
1091 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
1092 return;
1093 }
1094
1095 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
1096 int a = field->logical_minimum;
1097 int b = field->logical_maximum;
1098 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
1099 }
1100
1101 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
1102 dbg_hid("Maximum Effects - %d\n",value);
1103 return;
1104 }
1105
1106 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
1107 dbg_hid("PID Pool Report\n");
1108 return;
1109 }
1110
1111 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1112 return;
1113
1114 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1115 (usage->code == ABS_VOLUME)) {
1116 int count = abs(value);
1117 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1118 int i;
1119
1120 for (i = 0; i < count; i++) {
1121 input_event(input, EV_KEY, direction, 1);
1122 input_sync(input);
1123 input_event(input, EV_KEY, direction, 0);
1124 input_sync(input);
1125 }
1126 return;
1127 }
1128
1129 /*
1130 * Ignore out-of-range values as per HID specification,
1131 * section 5.10 and 6.2.25.
1132 *
1133 * The logical_minimum < logical_maximum check is done so that we
1134 * don't unintentionally discard values sent by devices which
1135 * don't specify logical min and max.
1136 */
1137 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1138 (field->logical_minimum < field->logical_maximum) &&
1139 (value < field->logical_minimum ||
1140 value > field->logical_maximum)) {
1141 dbg_hid("Ignoring out-of-range value %x\n", value);
1142 return;
1143 }
1144
1145 /*
1146 * Ignore reports for absolute data if the data didn't change. This is
1147 * not only an optimization but also fixes 'dead' key reports. Some
1148 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1149 * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1150 * can only have one of them physically available. The 'dead' keys
1151 * report constant 0. As all map to the same keycode, they'd confuse
1152 * the input layer. If we filter the 'dead' keys on the HID level, we
1153 * skip the keycode translation and only forward real events.
1154 */
1155 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1156 HID_MAIN_ITEM_BUFFERED_BYTE)) &&
1157 (field->flags & HID_MAIN_ITEM_VARIABLE) &&
1158 usage->usage_index < field->maxusage &&
1159 value == field->value[usage->usage_index])
1160 return;
1161
1162 /* report the usage code as scancode if the key status has changed */
1163 if (usage->type == EV_KEY &&
1164 (!test_bit(usage->code, input->key)) == value)
1165 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1166
1167 input_event(input, usage->type, usage->code, value);
1168
1169 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1170 usage->type == EV_KEY && value) {
1171 input_sync(input);
1172 input_event(input, usage->type, usage->code, 0);
1173 }
1174 }
1175
1176 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1177 {
1178 struct hid_input *hidinput;
1179
1180 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1181 return;
1182
1183 list_for_each_entry(hidinput, &hid->inputs, list)
1184 input_sync(hidinput->input);
1185 }
1186 EXPORT_SYMBOL_GPL(hidinput_report_event);
1187
1188 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1189 {
1190 struct hid_report *report;
1191 int i, j;
1192
1193 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1194 for (i = 0; i < report->maxfield; i++) {
1195 *field = report->field[i];
1196 for (j = 0; j < (*field)->maxusage; j++)
1197 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1198 return j;
1199 }
1200 }
1201 return -1;
1202 }
1203 EXPORT_SYMBOL_GPL(hidinput_find_field);
1204
1205 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1206 {
1207 struct hid_report *report;
1208 struct hid_field *field;
1209 int i, j;
1210
1211 list_for_each_entry(report,
1212 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1213 list) {
1214 for (i = 0; i < report->maxfield; i++) {
1215 field = report->field[i];
1216 for (j = 0; j < field->maxusage; j++)
1217 if (field->usage[j].type == EV_LED)
1218 return field;
1219 }
1220 }
1221 return NULL;
1222 }
1223 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1224
1225 unsigned int hidinput_count_leds(struct hid_device *hid)
1226 {
1227 struct hid_report *report;
1228 struct hid_field *field;
1229 int i, j;
1230 unsigned int count = 0;
1231
1232 list_for_each_entry(report,
1233 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1234 list) {
1235 for (i = 0; i < report->maxfield; i++) {
1236 field = report->field[i];
1237 for (j = 0; j < field->maxusage; j++)
1238 if (field->usage[j].type == EV_LED &&
1239 field->value[j])
1240 count += 1;
1241 }
1242 }
1243 return count;
1244 }
1245 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1246
1247 static void hidinput_led_worker(struct work_struct *work)
1248 {
1249 struct hid_device *hid = container_of(work, struct hid_device,
1250 led_work);
1251 struct hid_field *field;
1252 struct hid_report *report;
1253 int len, ret;
1254 __u8 *buf;
1255
1256 field = hidinput_get_led_field(hid);
1257 if (!field)
1258 return;
1259
1260 /*
1261 * field->report is accessed unlocked regarding HID core. So there might
1262 * be another incoming SET-LED request from user-space, which changes
1263 * the LED state while we assemble our outgoing buffer. However, this
1264 * doesn't matter as hid_output_report() correctly converts it into a
1265 * boolean value no matter what information is currently set on the LED
1266 * field (even garbage). So the remote device will always get a valid
1267 * request.
1268 * And in case we send a wrong value, a next led worker is spawned
1269 * for every SET-LED request so the following worker will send the
1270 * correct value, guaranteed!
1271 */
1272
1273 report = field->report;
1274
1275 /* use custom SET_REPORT request if possible (asynchronous) */
1276 if (hid->ll_driver->request)
1277 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1278
1279 /* fall back to generic raw-output-report */
1280 len = hid_report_len(report);
1281 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1282 if (!buf)
1283 return;
1284
1285 hid_output_report(report, buf);
1286 /* synchronous output report */
1287 ret = hid_hw_output_report(hid, buf, len);
1288 if (ret == -ENOSYS)
1289 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1290 HID_REQ_SET_REPORT);
1291 kfree(buf);
1292 }
1293
1294 static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1295 unsigned int code, int value)
1296 {
1297 struct hid_device *hid = input_get_drvdata(dev);
1298 struct hid_field *field;
1299 int offset;
1300
1301 if (type == EV_FF)
1302 return input_ff_event(dev, type, code, value);
1303
1304 if (type != EV_LED)
1305 return -1;
1306
1307 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1308 hid_warn(dev, "event field not found\n");
1309 return -1;
1310 }
1311
1312 hid_set_field(field, offset, value);
1313
1314 schedule_work(&hid->led_work);
1315 return 0;
1316 }
1317
1318 static int hidinput_open(struct input_dev *dev)
1319 {
1320 struct hid_device *hid = input_get_drvdata(dev);
1321
1322 return hid_hw_open(hid);
1323 }
1324
1325 static void hidinput_close(struct input_dev *dev)
1326 {
1327 struct hid_device *hid = input_get_drvdata(dev);
1328
1329 hid_hw_close(hid);
1330 }
1331
1332 static void report_features(struct hid_device *hid)
1333 {
1334 struct hid_driver *drv = hid->driver;
1335 struct hid_report_enum *rep_enum;
1336 struct hid_report *rep;
1337 int i, j;
1338
1339 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1340 list_for_each_entry(rep, &rep_enum->report_list, list)
1341 for (i = 0; i < rep->maxfield; i++) {
1342 /* Ignore if report count is out of bounds. */
1343 if (rep->field[i]->report_count < 1)
1344 continue;
1345
1346 for (j = 0; j < rep->field[i]->maxusage; j++) {
1347 /* Verify if Battery Strength feature is available */
1348 hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);
1349
1350 if (drv->feature_mapping)
1351 drv->feature_mapping(hid, rep->field[i],
1352 rep->field[i]->usage + j);
1353 }
1354 }
1355 }
1356
1357 static struct hid_input *hidinput_allocate(struct hid_device *hid)
1358 {
1359 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1360 struct input_dev *input_dev = input_allocate_device();
1361 if (!hidinput || !input_dev) {
1362 kfree(hidinput);
1363 input_free_device(input_dev);
1364 hid_err(hid, "Out of memory during hid input probe\n");
1365 return NULL;
1366 }
1367
1368 input_set_drvdata(input_dev, hid);
1369 input_dev->event = hidinput_input_event;
1370 input_dev->open = hidinput_open;
1371 input_dev->close = hidinput_close;
1372 input_dev->setkeycode = hidinput_setkeycode;
1373 input_dev->getkeycode = hidinput_getkeycode;
1374
1375 input_dev->name = hid->name;
1376 input_dev->phys = hid->phys;
1377 input_dev->uniq = hid->uniq;
1378 input_dev->id.bustype = hid->bus;
1379 input_dev->id.vendor = hid->vendor;
1380 input_dev->id.product = hid->product;
1381 input_dev->id.version = hid->version;
1382 input_dev->dev.parent = &hid->dev;
1383 hidinput->input = input_dev;
1384 list_add_tail(&hidinput->list, &hid->inputs);
1385
1386 return hidinput;
1387 }
1388
1389 static bool hidinput_has_been_populated(struct hid_input *hidinput)
1390 {
1391 int i;
1392 unsigned long r = 0;
1393
1394 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
1395 r |= hidinput->input->evbit[i];
1396
1397 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
1398 r |= hidinput->input->keybit[i];
1399
1400 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
1401 r |= hidinput->input->relbit[i];
1402
1403 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
1404 r |= hidinput->input->absbit[i];
1405
1406 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
1407 r |= hidinput->input->mscbit[i];
1408
1409 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
1410 r |= hidinput->input->ledbit[i];
1411
1412 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
1413 r |= hidinput->input->sndbit[i];
1414
1415 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
1416 r |= hidinput->input->ffbit[i];
1417
1418 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
1419 r |= hidinput->input->swbit[i];
1420
1421 return !!r;
1422 }
1423
1424 static void hidinput_cleanup_hidinput(struct hid_device *hid,
1425 struct hid_input *hidinput)
1426 {
1427 struct hid_report *report;
1428 int i, k;
1429
1430 list_del(&hidinput->list);
1431 input_free_device(hidinput->input);
1432
1433 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1434 if (k == HID_OUTPUT_REPORT &&
1435 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1436 continue;
1437
1438 list_for_each_entry(report, &hid->report_enum[k].report_list,
1439 list) {
1440
1441 for (i = 0; i < report->maxfield; i++)
1442 if (report->field[i]->hidinput == hidinput)
1443 report->field[i]->hidinput = NULL;
1444 }
1445 }
1446
1447 kfree(hidinput);
1448 }
1449
1450 /*
1451 * Register the input device; print a message.
1452 * Configure the input layer interface
1453 * Read all reports and initialize the absolute field values.
1454 */
1455
1456 int hidinput_connect(struct hid_device *hid, unsigned int force)
1457 {
1458 struct hid_driver *drv = hid->driver;
1459 struct hid_report *report;
1460 struct hid_input *hidinput = NULL;
1461 int i, j, k;
1462
1463 INIT_LIST_HEAD(&hid->inputs);
1464 INIT_WORK(&hid->led_work, hidinput_led_worker);
1465
1466 if (!force) {
1467 for (i = 0; i < hid->maxcollection; i++) {
1468 struct hid_collection *col = &hid->collection[i];
1469 if (col->type == HID_COLLECTION_APPLICATION ||
1470 col->type == HID_COLLECTION_PHYSICAL)
1471 if (IS_INPUT_APPLICATION(col->usage))
1472 break;
1473 }
1474
1475 if (i == hid->maxcollection)
1476 return -1;
1477 }
1478
1479 report_features(hid);
1480
1481 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1482 if (k == HID_OUTPUT_REPORT &&
1483 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1484 continue;
1485
1486 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1487
1488 if (!report->maxfield)
1489 continue;
1490
1491 if (!hidinput) {
1492 hidinput = hidinput_allocate(hid);
1493 if (!hidinput)
1494 goto out_unwind;
1495 }
1496
1497 for (i = 0; i < report->maxfield; i++)
1498 for (j = 0; j < report->field[i]->maxusage; j++)
1499 hidinput_configure_usage(hidinput, report->field[i],
1500 report->field[i]->usage + j);
1501
1502 if ((hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1503 !hidinput_has_been_populated(hidinput))
1504 continue;
1505
1506 if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
1507 /* This will leave hidinput NULL, so that it
1508 * allocates another one if we have more inputs on
1509 * the same interface. Some devices (e.g. Happ's
1510 * UGCI) cram a lot of unrelated inputs into the
1511 * same interface. */
1512 hidinput->report = report;
1513 if (drv->input_configured &&
1514 drv->input_configured(hid, hidinput))
1515 goto out_cleanup;
1516 if (input_register_device(hidinput->input))
1517 goto out_cleanup;
1518 hidinput = NULL;
1519 }
1520 }
1521 }
1522
1523 if (hidinput && (hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1524 !hidinput_has_been_populated(hidinput)) {
1525 /* no need to register an input device not populated */
1526 hidinput_cleanup_hidinput(hid, hidinput);
1527 hidinput = NULL;
1528 }
1529
1530 if (list_empty(&hid->inputs)) {
1531 hid_err(hid, "No inputs registered, leaving\n");
1532 goto out_unwind;
1533 }
1534
1535 if (hidinput) {
1536 if (drv->input_configured &&
1537 drv->input_configured(hid, hidinput))
1538 goto out_cleanup;
1539 if (input_register_device(hidinput->input))
1540 goto out_cleanup;
1541 }
1542
1543 return 0;
1544
1545 out_cleanup:
1546 list_del(&hidinput->list);
1547 input_free_device(hidinput->input);
1548 kfree(hidinput);
1549 out_unwind:
1550 /* unwind the ones we already registered */
1551 hidinput_disconnect(hid);
1552
1553 return -1;
1554 }
1555 EXPORT_SYMBOL_GPL(hidinput_connect);
1556
1557 void hidinput_disconnect(struct hid_device *hid)
1558 {
1559 struct hid_input *hidinput, *next;
1560
1561 hidinput_cleanup_battery(hid);
1562
1563 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1564 list_del(&hidinput->list);
1565 input_unregister_device(hidinput->input);
1566 kfree(hidinput);
1567 }
1568
1569 /* led_work is spawned by input_dev callbacks, but doesn't access the
1570 * parent input_dev at all. Once all input devices are removed, we
1571 * know that led_work will never get restarted, so we can cancel it
1572 * synchronously and are safe. */
1573 cancel_work_sync(&hid->led_work);
1574 }
1575 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1576
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