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xtensa: support DMA buffers in high memory
[cris-mirror.git] / drivers / hid / hid-input.c
blob04d01b57d94c8280d2d6a63ef863136165555c11
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_WHEEL:
257 case ABS_TILT_X:
258 case ABS_TILT_Y:
259 if (field->unit == 0x14) { /* If degrees */
260 /* Convert to radians */
261 prev = logical_extents;
262 logical_extents *= 573;
263 if (logical_extents < prev)
264 return 0;
265 unit_exponent += 1;
266 } else if (field->unit != 0x12) { /* If not radians */
267 return 0;
268 }
269 break;
270
271 default:
272 return 0;
273 }
274
275 /* Apply negative unit exponent */
276 for (; unit_exponent < 0; unit_exponent++) {
277 prev = logical_extents;
278 logical_extents *= 10;
279 if (logical_extents < prev)
280 return 0;
281 }
282 /* Apply positive unit exponent */
283 for (; unit_exponent > 0; unit_exponent--) {
284 prev = physical_extents;
285 physical_extents *= 10;
286 if (physical_extents < prev)
287 return 0;
288 }
289
290 /* Calculate resolution */
291 return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
292 }
293 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
294
295 #ifdef CONFIG_HID_BATTERY_STRENGTH
296 static enum power_supply_property hidinput_battery_props[] = {
297 POWER_SUPPLY_PROP_PRESENT,
298 POWER_SUPPLY_PROP_ONLINE,
299 POWER_SUPPLY_PROP_CAPACITY,
300 POWER_SUPPLY_PROP_MODEL_NAME,
301 POWER_SUPPLY_PROP_STATUS,
302 POWER_SUPPLY_PROP_SCOPE,
303 };
304
305 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
306 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
307 #define HID_BATTERY_QUIRK_IGNORE (1 << 2) /* completely ignore the battery */
308
309 static const struct hid_device_id hid_battery_quirks[] = {
310 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
311 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
312 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
313 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
314 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
315 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
316 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
317 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
318 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
319 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
320 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO),
321 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
322 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
323 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
324 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
325 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM,
326 USB_DEVICE_ID_ELECOM_BM084),
327 HID_BATTERY_QUIRK_IGNORE },
328 {}
329 };
330
331 static unsigned find_battery_quirk(struct hid_device *hdev)
332 {
333 unsigned quirks = 0;
334 const struct hid_device_id *match;
335
336 match = hid_match_id(hdev, hid_battery_quirks);
337 if (match != NULL)
338 quirks = match->driver_data;
339
340 return quirks;
341 }
342
343 static int hidinput_scale_battery_capacity(struct hid_device *dev,
344 int value)
345 {
346 if (dev->battery_min < dev->battery_max &&
347 value >= dev->battery_min && value <= dev->battery_max)
348 value = ((value - dev->battery_min) * 100) /
349 (dev->battery_max - dev->battery_min);
350
351 return value;
352 }
353
354 static int hidinput_query_battery_capacity(struct hid_device *dev)
355 {
356 u8 *buf;
357 int ret;
358
359 buf = kmalloc(2, GFP_KERNEL);
360 if (!buf)
361 return -ENOMEM;
362
363 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2,
364 dev->battery_report_type, HID_REQ_GET_REPORT);
365 if (ret != 2) {
366 kfree(buf);
367 return -ENODATA;
368 }
369
370 ret = hidinput_scale_battery_capacity(dev, buf[1]);
371 kfree(buf);
372 return ret;
373 }
374
375 static int hidinput_get_battery_property(struct power_supply *psy,
376 enum power_supply_property prop,
377 union power_supply_propval *val)
378 {
379 struct hid_device *dev = power_supply_get_drvdata(psy);
380 int value;
381 int ret = 0;
382
383 switch (prop) {
384 case POWER_SUPPLY_PROP_PRESENT:
385 case POWER_SUPPLY_PROP_ONLINE:
386 val->intval = 1;
387 break;
388
389 case POWER_SUPPLY_PROP_CAPACITY:
390 if (dev->battery_report_type == HID_FEATURE_REPORT) {
391 value = hidinput_query_battery_capacity(dev);
392 if (value < 0)
393 return value;
394 } else {
395 value = dev->battery_capacity;
396 }
397
398 val->intval = value;
399 break;
400
401 case POWER_SUPPLY_PROP_MODEL_NAME:
402 val->strval = dev->name;
403 break;
404
405 case POWER_SUPPLY_PROP_STATUS:
406 if (!dev->battery_reported &&
407 dev->battery_report_type == HID_FEATURE_REPORT) {
408 value = hidinput_query_battery_capacity(dev);
409 if (value < 0)
410 return value;
411
412 dev->battery_capacity = value;
413 dev->battery_reported = true;
414 }
415
416 if (!dev->battery_reported)
417 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
418 else if (dev->battery_capacity == 100)
419 val->intval = POWER_SUPPLY_STATUS_FULL;
420 else
421 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
422 break;
423
424 case POWER_SUPPLY_PROP_SCOPE:
425 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
426 break;
427
428 default:
429 ret = -EINVAL;
430 break;
431 }
432
433 return ret;
434 }
435
436 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
437 {
438 struct power_supply_desc *psy_desc;
439 struct power_supply_config psy_cfg = { .drv_data = dev, };
440 unsigned quirks;
441 s32 min, max;
442 int error;
443
444 if (dev->battery)
445 return 0; /* already initialized? */
446
447 quirks = find_battery_quirk(dev);
448
449 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
450 dev->bus, dev->vendor, dev->product, dev->version, quirks);
451
452 if (quirks & HID_BATTERY_QUIRK_IGNORE)
453 return 0;
454
455 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
456 if (!psy_desc)
457 return -ENOMEM;
458
459 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery",
460 strlen(dev->uniq) ?
461 dev->uniq : dev_name(&dev->dev));
462 if (!psy_desc->name) {
463 error = -ENOMEM;
464 goto err_free_mem;
465 }
466
467 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
468 psy_desc->properties = hidinput_battery_props;
469 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
470 psy_desc->use_for_apm = 0;
471 psy_desc->get_property = hidinput_get_battery_property;
472
473 min = field->logical_minimum;
474 max = field->logical_maximum;
475
476 if (quirks & HID_BATTERY_QUIRK_PERCENT) {
477 min = 0;
478 max = 100;
479 }
480
481 if (quirks & HID_BATTERY_QUIRK_FEATURE)
482 report_type = HID_FEATURE_REPORT;
483
484 dev->battery_min = min;
485 dev->battery_max = max;
486 dev->battery_report_type = report_type;
487 dev->battery_report_id = field->report->id;
488
489 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
490 if (IS_ERR(dev->battery)) {
491 error = PTR_ERR(dev->battery);
492 hid_warn(dev, "can't register power supply: %d\n", error);
493 goto err_free_name;
494 }
495
496 power_supply_powers(dev->battery, &dev->dev);
497 return 0;
498
499 err_free_name:
500 kfree(psy_desc->name);
501 err_free_mem:
502 kfree(psy_desc);
503 dev->battery = NULL;
504 return error;
505 }
506
507 static void hidinput_cleanup_battery(struct hid_device *dev)
508 {
509 const struct power_supply_desc *psy_desc;
510
511 if (!dev->battery)
512 return;
513
514 psy_desc = dev->battery->desc;
515 power_supply_unregister(dev->battery);
516 kfree(psy_desc->name);
517 kfree(psy_desc);
518 dev->battery = NULL;
519 }
520
521 static void hidinput_update_battery(struct hid_device *dev, int value)
522 {
523 int capacity;
524
525 if (!dev->battery)
526 return;
527
528 if (value == 0 || value < dev->battery_min || value > dev->battery_max)
529 return;
530
531 capacity = hidinput_scale_battery_capacity(dev, value);
532
533 if (!dev->battery_reported || capacity != dev->battery_capacity) {
534 dev->battery_capacity = capacity;
535 dev->battery_reported = true;
536 power_supply_changed(dev->battery);
537 }
538 }
539 #else /* !CONFIG_HID_BATTERY_STRENGTH */
540 static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
541 struct hid_field *field)
542 {
543 return 0;
544 }
545
546 static void hidinput_cleanup_battery(struct hid_device *dev)
547 {
548 }
549
550 static void hidinput_update_battery(struct hid_device *dev, int value)
551 {
552 }
553 #endif /* CONFIG_HID_BATTERY_STRENGTH */
554
555 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
556 struct hid_usage *usage)
557 {
558 struct input_dev *input = hidinput->input;
559 struct hid_device *device = input_get_drvdata(input);
560 int max = 0, code;
561 unsigned long *bit = NULL;
562
563 field->hidinput = hidinput;
564
565 if (field->flags & HID_MAIN_ITEM_CONSTANT)
566 goto ignore;
567
568 /* Ignore if report count is out of bounds. */
569 if (field->report_count < 1)
570 goto ignore;
571
572 /* only LED usages are supported in output fields */
573 if (field->report_type == HID_OUTPUT_REPORT &&
574 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
575 goto ignore;
576 }
577
578 if (device->driver->input_mapping) {
579 int ret = device->driver->input_mapping(device, hidinput, field,
580 usage, &bit, &max);
581 if (ret > 0)
582 goto mapped;
583 if (ret < 0)
584 goto ignore;
585 }
586
587 switch (usage->hid & HID_USAGE_PAGE) {
588 case HID_UP_UNDEFINED:
589 goto ignore;
590
591 case HID_UP_KEYBOARD:
592 set_bit(EV_REP, input->evbit);
593
594 if ((usage->hid & HID_USAGE) < 256) {
595 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
596 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
597 } else
598 map_key(KEY_UNKNOWN);
599
600 break;
601
602 case HID_UP_BUTTON:
603 code = ((usage->hid - 1) & HID_USAGE);
604
605 switch (field->application) {
606 case HID_GD_MOUSE:
607 case HID_GD_POINTER: code += BTN_MOUSE; break;
608 case HID_GD_JOYSTICK:
609 if (code <= 0xf)
610 code += BTN_JOYSTICK;
611 else
612 code += BTN_TRIGGER_HAPPY - 0x10;
613 break;
614 case HID_GD_GAMEPAD:
615 if (code <= 0xf)
616 code += BTN_GAMEPAD;
617 else
618 code += BTN_TRIGGER_HAPPY - 0x10;
619 break;
620 default:
621 switch (field->physical) {
622 case HID_GD_MOUSE:
623 case HID_GD_POINTER: code += BTN_MOUSE; break;
624 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
625 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
626 default: code += BTN_MISC;
627 }
628 }
629
630 map_key(code);
631 break;
632
633 case HID_UP_SIMULATION:
634 switch (usage->hid & 0xffff) {
635 case 0xba: map_abs(ABS_RUDDER); break;
636 case 0xbb: map_abs(ABS_THROTTLE); break;
637 case 0xc4: map_abs(ABS_GAS); break;
638 case 0xc5: map_abs(ABS_BRAKE); break;
639 case 0xc8: map_abs(ABS_WHEEL); break;
640 default: goto ignore;
641 }
642 break;
643
644 case HID_UP_GENDESK:
645 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
646 switch (usage->hid & 0xf) {
647 case 0x1: map_key_clear(KEY_POWER); break;
648 case 0x2: map_key_clear(KEY_SLEEP); break;
649 case 0x3: map_key_clear(KEY_WAKEUP); break;
650 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
651 case 0x5: map_key_clear(KEY_MENU); break;
652 case 0x6: map_key_clear(KEY_PROG1); break;
653 case 0x7: map_key_clear(KEY_HELP); break;
654 case 0x8: map_key_clear(KEY_EXIT); break;
655 case 0x9: map_key_clear(KEY_SELECT); break;
656 case 0xa: map_key_clear(KEY_RIGHT); break;
657 case 0xb: map_key_clear(KEY_LEFT); break;
658 case 0xc: map_key_clear(KEY_UP); break;
659 case 0xd: map_key_clear(KEY_DOWN); break;
660 case 0xe: map_key_clear(KEY_POWER2); break;
661 case 0xf: map_key_clear(KEY_RESTART); break;
662 default: goto unknown;
663 }
664 break;
665 }
666
667 /*
668 * Some lazy vendors declare 255 usages for System Control,
669 * leading to the creation of ABS_X|Y axis and too many others.
670 * It wouldn't be a problem if joydev doesn't consider the
671 * device as a joystick then.
672 */
673 if (field->application == HID_GD_SYSTEM_CONTROL)
674 goto ignore;
675
676 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
677 switch (usage->hid) {
678 case HID_GD_UP: usage->hat_dir = 1; break;
679 case HID_GD_DOWN: usage->hat_dir = 5; break;
680 case HID_GD_RIGHT: usage->hat_dir = 3; break;
681 case HID_GD_LEFT: usage->hat_dir = 7; break;
682 default: goto unknown;
683 }
684 if (field->dpad) {
685 map_abs(field->dpad);
686 goto ignore;
687 }
688 map_abs(ABS_HAT0X);
689 break;
690 }
691
692 switch (usage->hid) {
693 /* These usage IDs map directly to the usage codes. */
694 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
695 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
696 if (field->flags & HID_MAIN_ITEM_RELATIVE)
697 map_rel(usage->hid & 0xf);
698 else
699 map_abs_clear(usage->hid & 0xf);
700 break;
701
702 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
703 if (field->flags & HID_MAIN_ITEM_RELATIVE)
704 map_rel(usage->hid & 0xf);
705 else
706 map_abs(usage->hid & 0xf);
707 break;
708
709 case HID_GD_HATSWITCH:
710 usage->hat_min = field->logical_minimum;
711 usage->hat_max = field->logical_maximum;
712 map_abs(ABS_HAT0X);
713 break;
714
715 case HID_GD_START: map_key_clear(BTN_START); break;
716 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
717
718 case HID_GD_RFKILL_BTN:
719 /* MS wireless radio ctl extension, also check CA */
720 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
721 map_key_clear(KEY_RFKILL);
722 /* We need to simulate the btn release */
723 field->flags |= HID_MAIN_ITEM_RELATIVE;
724 break;
725 }
726
727 default: goto unknown;
728 }
729
730 break;
731
732 case HID_UP_LED:
733 switch (usage->hid & 0xffff) { /* HID-Value: */
734 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
735 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
736 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
737 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
738 case 0x05: map_led (LED_KANA); break; /* "Kana" */
739 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
740 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
741 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
742 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
743 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
744 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
745
746 default: goto ignore;
747 }
748 break;
749
750 case HID_UP_DIGITIZER:
751 switch (usage->hid & 0xff) {
752 case 0x00: /* Undefined */
753 goto ignore;
754
755 case 0x30: /* TipPressure */
756 if (!test_bit(BTN_TOUCH, input->keybit)) {
757 device->quirks |= HID_QUIRK_NOTOUCH;
758 set_bit(EV_KEY, input->evbit);
759 set_bit(BTN_TOUCH, input->keybit);
760 }
761 map_abs_clear(ABS_PRESSURE);
762 break;
763
764 case 0x32: /* InRange */
765 switch (field->physical & 0xff) {
766 case 0x21: map_key(BTN_TOOL_MOUSE); break;
767 case 0x22: map_key(BTN_TOOL_FINGER); break;
768 default: map_key(BTN_TOOL_PEN); break;
769 }
770 break;
771
772 case 0x3b: /* Battery Strength */
773 hidinput_setup_battery(device, HID_INPUT_REPORT, field);
774 usage->type = EV_PWR;
775 goto ignore;
776
777 case 0x3c: /* Invert */
778 map_key_clear(BTN_TOOL_RUBBER);
779 break;
780
781 case 0x3d: /* X Tilt */
782 map_abs_clear(ABS_TILT_X);
783 break;
784
785 case 0x3e: /* Y Tilt */
786 map_abs_clear(ABS_TILT_Y);
787 break;
788
789 case 0x33: /* Touch */
790 case 0x42: /* TipSwitch */
791 case 0x43: /* TipSwitch2 */
792 device->quirks &= ~HID_QUIRK_NOTOUCH;
793 map_key_clear(BTN_TOUCH);
794 break;
795
796 case 0x44: /* BarrelSwitch */
797 map_key_clear(BTN_STYLUS);
798 break;
799
800 case 0x45: /* ERASER */
801 /*
802 * This event is reported when eraser tip touches the surface.
803 * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when
804 * tool gets in proximity.
805 */
806 map_key_clear(BTN_TOUCH);
807 break;
808
809 case 0x46: /* TabletPick */
810 case 0x5a: /* SecondaryBarrelSwitch */
811 map_key_clear(BTN_STYLUS2);
812 break;
813
814 case 0x5b: /* TransducerSerialNumber */
815 usage->type = EV_MSC;
816 usage->code = MSC_SERIAL;
817 bit = input->mscbit;
818 max = MSC_MAX;
819 break;
820
821 default: goto unknown;
822 }
823 break;
824
825 case HID_UP_TELEPHONY:
826 switch (usage->hid & HID_USAGE) {
827 case 0x2f: map_key_clear(KEY_MICMUTE); break;
828 case 0xb0: map_key_clear(KEY_NUMERIC_0); break;
829 case 0xb1: map_key_clear(KEY_NUMERIC_1); break;
830 case 0xb2: map_key_clear(KEY_NUMERIC_2); break;
831 case 0xb3: map_key_clear(KEY_NUMERIC_3); break;
832 case 0xb4: map_key_clear(KEY_NUMERIC_4); break;
833 case 0xb5: map_key_clear(KEY_NUMERIC_5); break;
834 case 0xb6: map_key_clear(KEY_NUMERIC_6); break;
835 case 0xb7: map_key_clear(KEY_NUMERIC_7); break;
836 case 0xb8: map_key_clear(KEY_NUMERIC_8); break;
837 case 0xb9: map_key_clear(KEY_NUMERIC_9); break;
838 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;
839 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;
840 case 0xbc: map_key_clear(KEY_NUMERIC_A); break;
841 case 0xbd: map_key_clear(KEY_NUMERIC_B); break;
842 case 0xbe: map_key_clear(KEY_NUMERIC_C); break;
843 case 0xbf: map_key_clear(KEY_NUMERIC_D); break;
844 default: goto ignore;
845 }
846 break;
847
848 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
849 switch (usage->hid & HID_USAGE) {
850 case 0x000: goto ignore;
851 case 0x030: map_key_clear(KEY_POWER); break;
852 case 0x031: map_key_clear(KEY_RESTART); break;
853 case 0x032: map_key_clear(KEY_SLEEP); break;
854 case 0x034: map_key_clear(KEY_SLEEP); break;
855 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
856 case 0x036: map_key_clear(BTN_MISC); break;
857
858 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
859 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
860 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
861 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
862 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
863 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
864 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
865 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
866 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
867
868 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
869 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
870 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
871 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
872 case 0x069: map_key_clear(KEY_RED); break;
873 case 0x06a: map_key_clear(KEY_GREEN); break;
874 case 0x06b: map_key_clear(KEY_BLUE); break;
875 case 0x06c: map_key_clear(KEY_YELLOW); break;
876 case 0x06d: map_key_clear(KEY_ZOOM); break;
877
878 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;
879 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;
880 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;
881 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;
882 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;
883 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;
884
885 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
886 case 0x083: map_key_clear(KEY_LAST); break;
887 case 0x084: map_key_clear(KEY_ENTER); break;
888 case 0x088: map_key_clear(KEY_PC); break;
889 case 0x089: map_key_clear(KEY_TV); break;
890 case 0x08a: map_key_clear(KEY_WWW); break;
891 case 0x08b: map_key_clear(KEY_DVD); break;
892 case 0x08c: map_key_clear(KEY_PHONE); break;
893 case 0x08d: map_key_clear(KEY_PROGRAM); break;
894 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
895 case 0x08f: map_key_clear(KEY_GAMES); break;
896 case 0x090: map_key_clear(KEY_MEMO); break;
897 case 0x091: map_key_clear(KEY_CD); break;
898 case 0x092: map_key_clear(KEY_VCR); break;
899 case 0x093: map_key_clear(KEY_TUNER); break;
900 case 0x094: map_key_clear(KEY_EXIT); break;
901 case 0x095: map_key_clear(KEY_HELP); break;
902 case 0x096: map_key_clear(KEY_TAPE); break;
903 case 0x097: map_key_clear(KEY_TV2); break;
904 case 0x098: map_key_clear(KEY_SAT); break;
905 case 0x09a: map_key_clear(KEY_PVR); break;
906
907 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
908 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
909 case 0x0a0: map_key_clear(KEY_VCR2); break;
910
911 case 0x0b0: map_key_clear(KEY_PLAY); break;
912 case 0x0b1: map_key_clear(KEY_PAUSE); break;
913 case 0x0b2: map_key_clear(KEY_RECORD); break;
914 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
915 case 0x0b4: map_key_clear(KEY_REWIND); break;
916 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
917 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
918 case 0x0b7: map_key_clear(KEY_STOPCD); break;
919 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
920 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
921 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
922 case 0x0bf: map_key_clear(KEY_SLOW); break;
923
924 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
925 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;
926 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
927 case 0x0e2: map_key_clear(KEY_MUTE); break;
928 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
929 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
930 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
931 case 0x0f5: map_key_clear(KEY_SLOW); break;
932
933 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;
934 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
935 case 0x183: map_key_clear(KEY_CONFIG); break;
936 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
937 case 0x185: map_key_clear(KEY_EDITOR); break;
938 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
939 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
940 case 0x188: map_key_clear(KEY_PRESENTATION); break;
941 case 0x189: map_key_clear(KEY_DATABASE); break;
942 case 0x18a: map_key_clear(KEY_MAIL); break;
943 case 0x18b: map_key_clear(KEY_NEWS); break;
944 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
945 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
946 case 0x18e: map_key_clear(KEY_CALENDAR); break;
947 case 0x18f: map_key_clear(KEY_TASKMANAGER); break;
948 case 0x190: map_key_clear(KEY_JOURNAL); break;
949 case 0x191: map_key_clear(KEY_FINANCE); break;
950 case 0x192: map_key_clear(KEY_CALC); break;
951 case 0x193: map_key_clear(KEY_PLAYER); break;
952 case 0x194: map_key_clear(KEY_FILE); break;
953 case 0x196: map_key_clear(KEY_WWW); break;
954 case 0x199: map_key_clear(KEY_CHAT); break;
955 case 0x19c: map_key_clear(KEY_LOGOFF); break;
956 case 0x19e: map_key_clear(KEY_COFFEE); break;
957 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;
958 case 0x1a2: map_key_clear(KEY_APPSELECT); break;
959 case 0x1a3: map_key_clear(KEY_NEXT); break;
960 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;
961 case 0x1a6: map_key_clear(KEY_HELP); break;
962 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
963 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
964 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
965 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;
966 case 0x1b4: map_key_clear(KEY_FILE); break;
967 case 0x1b6: map_key_clear(KEY_IMAGES); break;
968 case 0x1b7: map_key_clear(KEY_AUDIO); break;
969 case 0x1b8: map_key_clear(KEY_VIDEO); break;
970 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
971 case 0x1bd: map_key_clear(KEY_INFO); break;
972 case 0x201: map_key_clear(KEY_NEW); break;
973 case 0x202: map_key_clear(KEY_OPEN); break;
974 case 0x203: map_key_clear(KEY_CLOSE); break;
975 case 0x204: map_key_clear(KEY_EXIT); break;
976 case 0x207: map_key_clear(KEY_SAVE); break;
977 case 0x208: map_key_clear(KEY_PRINT); break;
978 case 0x209: map_key_clear(KEY_PROPS); break;
979 case 0x21a: map_key_clear(KEY_UNDO); break;
980 case 0x21b: map_key_clear(KEY_COPY); break;
981 case 0x21c: map_key_clear(KEY_CUT); break;
982 case 0x21d: map_key_clear(KEY_PASTE); break;
983 case 0x21f: map_key_clear(KEY_FIND); break;
984 case 0x221: map_key_clear(KEY_SEARCH); break;
985 case 0x222: map_key_clear(KEY_GOTO); break;
986 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
987 case 0x224: map_key_clear(KEY_BACK); break;
988 case 0x225: map_key_clear(KEY_FORWARD); break;
989 case 0x226: map_key_clear(KEY_STOP); break;
990 case 0x227: map_key_clear(KEY_REFRESH); break;
991 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
992 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
993 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
994 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
995 case 0x233: map_key_clear(KEY_SCROLLUP); break;
996 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
997 case 0x238: map_rel(REL_HWHEEL); break;
998 case 0x23d: map_key_clear(KEY_EDIT); break;
999 case 0x25f: map_key_clear(KEY_CANCEL); break;
1000 case 0x269: map_key_clear(KEY_INSERT); break;
1001 case 0x26a: map_key_clear(KEY_DELETE); break;
1002 case 0x279: map_key_clear(KEY_REDO); break;
1003
1004 case 0x289: map_key_clear(KEY_REPLY); break;
1005 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
1006 case 0x28c: map_key_clear(KEY_SEND); break;
1007
1008 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;
1009 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;
1010 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;
1011 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;
1012 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;
1013 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;
1014
1015 default: map_key_clear(KEY_UNKNOWN);
1016 }
1017 break;
1018
1019 case HID_UP_GENDEVCTRLS:
1020 switch (usage->hid) {
1021 case HID_DC_BATTERYSTRENGTH:
1022 hidinput_setup_battery(device, HID_INPUT_REPORT, field);
1023 usage->type = EV_PWR;
1024 goto ignore;
1025 }
1026 goto unknown;
1027
1028 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
1029 set_bit(EV_REP, input->evbit);
1030 switch (usage->hid & HID_USAGE) {
1031 case 0x021: map_key_clear(KEY_PRINT); break;
1032 case 0x070: map_key_clear(KEY_HP); break;
1033 case 0x071: map_key_clear(KEY_CAMERA); break;
1034 case 0x072: map_key_clear(KEY_SOUND); break;
1035 case 0x073: map_key_clear(KEY_QUESTION); break;
1036 case 0x080: map_key_clear(KEY_EMAIL); break;
1037 case 0x081: map_key_clear(KEY_CHAT); break;
1038 case 0x082: map_key_clear(KEY_SEARCH); break;
1039 case 0x083: map_key_clear(KEY_CONNECT); break;
1040 case 0x084: map_key_clear(KEY_FINANCE); break;
1041 case 0x085: map_key_clear(KEY_SPORT); break;
1042 case 0x086: map_key_clear(KEY_SHOP); break;
1043 default: goto ignore;
1044 }
1045 break;
1046
1047 case HID_UP_HPVENDOR2:
1048 set_bit(EV_REP, input->evbit);
1049 switch (usage->hid & HID_USAGE) {
1050 case 0x001: map_key_clear(KEY_MICMUTE); break;
1051 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
1052 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
1053 default: goto ignore;
1054 }
1055 break;
1056
1057 case HID_UP_MSVENDOR:
1058 goto ignore;
1059
1060 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
1061 set_bit(EV_REP, input->evbit);
1062 goto ignore;
1063
1064 case HID_UP_LOGIVENDOR:
1065 /* intentional fallback */
1066 case HID_UP_LOGIVENDOR2:
1067 /* intentional fallback */
1068 case HID_UP_LOGIVENDOR3:
1069 goto ignore;
1070
1071 case HID_UP_PID:
1072 switch (usage->hid & HID_USAGE) {
1073 case 0xa4: map_key_clear(BTN_DEAD); break;
1074 default: goto ignore;
1075 }
1076 break;
1077
1078 default:
1079 unknown:
1080 if (field->report_size == 1) {
1081 if (field->report->type == HID_OUTPUT_REPORT) {
1082 map_led(LED_MISC);
1083 break;
1084 }
1085 map_key(BTN_MISC);
1086 break;
1087 }
1088 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
1089 map_rel(REL_MISC);
1090 break;
1091 }
1092 map_abs(ABS_MISC);
1093 break;
1094 }
1095
1096 mapped:
1097 if (device->driver->input_mapped && device->driver->input_mapped(device,
1098 hidinput, field, usage, &bit, &max) < 0)
1099 goto ignore;
1100
1101 set_bit(usage->type, input->evbit);
1102
1103 while (usage->code <= max && test_and_set_bit(usage->code, bit))
1104 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
1105
1106 if (usage->code > max)
1107 goto ignore;
1108
1109 if (usage->type == EV_ABS) {
1110
1111 int a = field->logical_minimum;
1112 int b = field->logical_maximum;
1113
1114 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
1115 a = field->logical_minimum = 0;
1116 b = field->logical_maximum = 255;
1117 }
1118
1119 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
1120 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
1121 else input_set_abs_params(input, usage->code, a, b, 0, 0);
1122
1123 input_abs_set_res(input, usage->code,
1124 hidinput_calc_abs_res(field, usage->code));
1125
1126 /* use a larger default input buffer for MT devices */
1127 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
1128 input_set_events_per_packet(input, 60);
1129 }
1130
1131 if (usage->type == EV_ABS &&
1132 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
1133 int i;
1134 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
1135 input_set_abs_params(input, i, -1, 1, 0, 0);
1136 set_bit(i, input->absbit);
1137 }
1138 if (usage->hat_dir && !field->dpad)
1139 field->dpad = usage->code;
1140 }
1141
1142 /* for those devices which produce Consumer volume usage as relative,
1143 * we emulate pressing volumeup/volumedown appropriate number of times
1144 * in hidinput_hid_event()
1145 */
1146 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1147 (usage->code == ABS_VOLUME)) {
1148 set_bit(KEY_VOLUMEUP, input->keybit);
1149 set_bit(KEY_VOLUMEDOWN, input->keybit);
1150 }
1151
1152 if (usage->type == EV_KEY) {
1153 set_bit(EV_MSC, input->evbit);
1154 set_bit(MSC_SCAN, input->mscbit);
1155 }
1156
1157 ignore:
1158 return;
1159
1160 }
1161
1162 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
1163 {
1164 struct input_dev *input;
1165 unsigned *quirks = &hid->quirks;
1166
1167 if (!usage->type)
1168 return;
1169
1170 if (usage->type == EV_PWR) {
1171 hidinput_update_battery(hid, value);
1172 return;
1173 }
1174
1175 if (!field->hidinput)
1176 return;
1177
1178 input = field->hidinput->input;
1179
1180 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
1181 int hat_dir = usage->hat_dir;
1182 if (!hat_dir)
1183 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1184 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1185 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
1186 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1187 return;
1188 }
1189
1190 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
1191 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
1192 return;
1193 }
1194
1195 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
1196 if (value) {
1197 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
1198 return;
1199 }
1200 input_event(input, usage->type, usage->code, 0);
1201 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
1202 return;
1203 }
1204
1205 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
1206 int a = field->logical_minimum;
1207 int b = field->logical_maximum;
1208 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
1209 }
1210
1211 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
1212 dbg_hid("Maximum Effects - %d\n",value);
1213 return;
1214 }
1215
1216 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
1217 dbg_hid("PID Pool Report\n");
1218 return;
1219 }
1220
1221 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1222 return;
1223
1224 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1225 (usage->code == ABS_VOLUME)) {
1226 int count = abs(value);
1227 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1228 int i;
1229
1230 for (i = 0; i < count; i++) {
1231 input_event(input, EV_KEY, direction, 1);
1232 input_sync(input);
1233 input_event(input, EV_KEY, direction, 0);
1234 input_sync(input);
1235 }
1236 return;
1237 }
1238
1239 /*
1240 * Ignore out-of-range values as per HID specification,
1241 * section 5.10 and 6.2.25, when NULL state bit is present.
1242 * When it's not, clamp the value to match Microsoft's input
1243 * driver as mentioned in "Required HID usages for digitizers":
1244 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
1245 *
1246 * The logical_minimum < logical_maximum check is done so that we
1247 * don't unintentionally discard values sent by devices which
1248 * don't specify logical min and max.
1249 */
1250 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1251 (field->logical_minimum < field->logical_maximum)) {
1252 if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
1253 (value < field->logical_minimum ||
1254 value > field->logical_maximum)) {
1255 dbg_hid("Ignoring out-of-range value %x\n", value);
1256 return;
1257 }
1258 value = clamp(value,
1259 field->logical_minimum,
1260 field->logical_maximum);
1261 }
1262
1263 /*
1264 * Ignore reports for absolute data if the data didn't change. This is
1265 * not only an optimization but also fixes 'dead' key reports. Some
1266 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
1267 * 0x31 and 0x32) report multiple keys, even though a localized keyboard
1268 * can only have one of them physically available. The 'dead' keys
1269 * report constant 0. As all map to the same keycode, they'd confuse
1270 * the input layer. If we filter the 'dead' keys on the HID level, we
1271 * skip the keycode translation and only forward real events.
1272 */
1273 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
1274 HID_MAIN_ITEM_BUFFERED_BYTE)) &&
1275 (field->flags & HID_MAIN_ITEM_VARIABLE) &&
1276 usage->usage_index < field->maxusage &&
1277 value == field->value[usage->usage_index])
1278 return;
1279
1280 /* report the usage code as scancode if the key status has changed */
1281 if (usage->type == EV_KEY &&
1282 (!test_bit(usage->code, input->key)) == value)
1283 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1284
1285 input_event(input, usage->type, usage->code, value);
1286
1287 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
1288 usage->type == EV_KEY && value) {
1289 input_sync(input);
1290 input_event(input, usage->type, usage->code, 0);
1291 }
1292 }
1293
1294 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1295 {
1296 struct hid_input *hidinput;
1297
1298 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1299 return;
1300
1301 list_for_each_entry(hidinput, &hid->inputs, list)
1302 input_sync(hidinput->input);
1303 }
1304 EXPORT_SYMBOL_GPL(hidinput_report_event);
1305
1306 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1307 {
1308 struct hid_report *report;
1309 int i, j;
1310
1311 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1312 for (i = 0; i < report->maxfield; i++) {
1313 *field = report->field[i];
1314 for (j = 0; j < (*field)->maxusage; j++)
1315 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1316 return j;
1317 }
1318 }
1319 return -1;
1320 }
1321 EXPORT_SYMBOL_GPL(hidinput_find_field);
1322
1323 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1324 {
1325 struct hid_report *report;
1326 struct hid_field *field;
1327 int i, j;
1328
1329 list_for_each_entry(report,
1330 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1331 list) {
1332 for (i = 0; i < report->maxfield; i++) {
1333 field = report->field[i];
1334 for (j = 0; j < field->maxusage; j++)
1335 if (field->usage[j].type == EV_LED)
1336 return field;
1337 }
1338 }
1339 return NULL;
1340 }
1341 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1342
1343 unsigned int hidinput_count_leds(struct hid_device *hid)
1344 {
1345 struct hid_report *report;
1346 struct hid_field *field;
1347 int i, j;
1348 unsigned int count = 0;
1349
1350 list_for_each_entry(report,
1351 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1352 list) {
1353 for (i = 0; i < report->maxfield; i++) {
1354 field = report->field[i];
1355 for (j = 0; j < field->maxusage; j++)
1356 if (field->usage[j].type == EV_LED &&
1357 field->value[j])
1358 count += 1;
1359 }
1360 }
1361 return count;
1362 }
1363 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1364
1365 static void hidinput_led_worker(struct work_struct *work)
1366 {
1367 struct hid_device *hid = container_of(work, struct hid_device,
1368 led_work);
1369 struct hid_field *field;
1370 struct hid_report *report;
1371 int len, ret;
1372 __u8 *buf;
1373
1374 field = hidinput_get_led_field(hid);
1375 if (!field)
1376 return;
1377
1378 /*
1379 * field->report is accessed unlocked regarding HID core. So there might
1380 * be another incoming SET-LED request from user-space, which changes
1381 * the LED state while we assemble our outgoing buffer. However, this
1382 * doesn't matter as hid_output_report() correctly converts it into a
1383 * boolean value no matter what information is currently set on the LED
1384 * field (even garbage). So the remote device will always get a valid
1385 * request.
1386 * And in case we send a wrong value, a next led worker is spawned
1387 * for every SET-LED request so the following worker will send the
1388 * correct value, guaranteed!
1389 */
1390
1391 report = field->report;
1392
1393 /* use custom SET_REPORT request if possible (asynchronous) */
1394 if (hid->ll_driver->request)
1395 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1396
1397 /* fall back to generic raw-output-report */
1398 len = hid_report_len(report);
1399 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1400 if (!buf)
1401 return;
1402
1403 hid_output_report(report, buf);
1404 /* synchronous output report */
1405 ret = hid_hw_output_report(hid, buf, len);
1406 if (ret == -ENOSYS)
1407 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
1408 HID_REQ_SET_REPORT);
1409 kfree(buf);
1410 }
1411
1412 static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1413 unsigned int code, int value)
1414 {
1415 struct hid_device *hid = input_get_drvdata(dev);
1416 struct hid_field *field;
1417 int offset;
1418
1419 if (type == EV_FF)
1420 return input_ff_event(dev, type, code, value);
1421
1422 if (type != EV_LED)
1423 return -1;
1424
1425 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1426 hid_warn(dev, "event field not found\n");
1427 return -1;
1428 }
1429
1430 hid_set_field(field, offset, value);
1431
1432 schedule_work(&hid->led_work);
1433 return 0;
1434 }
1435
1436 static int hidinput_open(struct input_dev *dev)
1437 {
1438 struct hid_device *hid = input_get_drvdata(dev);
1439
1440 return hid_hw_open(hid);
1441 }
1442
1443 static void hidinput_close(struct input_dev *dev)
1444 {
1445 struct hid_device *hid = input_get_drvdata(dev);
1446
1447 hid_hw_close(hid);
1448 }
1449
1450 static void report_features(struct hid_device *hid)
1451 {
1452 struct hid_driver *drv = hid->driver;
1453 struct hid_report_enum *rep_enum;
1454 struct hid_report *rep;
1455 struct hid_usage *usage;
1456 int i, j;
1457
1458 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1459 list_for_each_entry(rep, &rep_enum->report_list, list)
1460 for (i = 0; i < rep->maxfield; i++) {
1461 /* Ignore if report count is out of bounds. */
1462 if (rep->field[i]->report_count < 1)
1463 continue;
1464
1465 for (j = 0; j < rep->field[i]->maxusage; j++) {
1466 usage = &rep->field[i]->usage[j];
1467
1468 /* Verify if Battery Strength feature is available */
1469 if (usage->hid == HID_DC_BATTERYSTRENGTH)
1470 hidinput_setup_battery(hid, HID_FEATURE_REPORT,
1471 rep->field[i]);
1472
1473 if (drv->feature_mapping)
1474 drv->feature_mapping(hid, rep->field[i], usage);
1475 }
1476 }
1477 }
1478
1479 static struct hid_input *hidinput_allocate(struct hid_device *hid)
1480 {
1481 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1482 struct input_dev *input_dev = input_allocate_device();
1483 if (!hidinput || !input_dev) {
1484 kfree(hidinput);
1485 input_free_device(input_dev);
1486 hid_err(hid, "Out of memory during hid input probe\n");
1487 return NULL;
1488 }
1489
1490 input_set_drvdata(input_dev, hid);
1491 input_dev->event = hidinput_input_event;
1492 input_dev->open = hidinput_open;
1493 input_dev->close = hidinput_close;
1494 input_dev->setkeycode = hidinput_setkeycode;
1495 input_dev->getkeycode = hidinput_getkeycode;
1496
1497 input_dev->name = hid->name;
1498 input_dev->phys = hid->phys;
1499 input_dev->uniq = hid->uniq;
1500 input_dev->id.bustype = hid->bus;
1501 input_dev->id.vendor = hid->vendor;
1502 input_dev->id.product = hid->product;
1503 input_dev->id.version = hid->version;
1504 input_dev->dev.parent = &hid->dev;
1505 hidinput->input = input_dev;
1506 list_add_tail(&hidinput->list, &hid->inputs);
1507
1508 return hidinput;
1509 }
1510
1511 static bool hidinput_has_been_populated(struct hid_input *hidinput)
1512 {
1513 int i;
1514 unsigned long r = 0;
1515
1516 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
1517 r |= hidinput->input->evbit[i];
1518
1519 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
1520 r |= hidinput->input->keybit[i];
1521
1522 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
1523 r |= hidinput->input->relbit[i];
1524
1525 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
1526 r |= hidinput->input->absbit[i];
1527
1528 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
1529 r |= hidinput->input->mscbit[i];
1530
1531 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
1532 r |= hidinput->input->ledbit[i];
1533
1534 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
1535 r |= hidinput->input->sndbit[i];
1536
1537 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
1538 r |= hidinput->input->ffbit[i];
1539
1540 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
1541 r |= hidinput->input->swbit[i];
1542
1543 return !!r;
1544 }
1545
1546 static void hidinput_cleanup_hidinput(struct hid_device *hid,
1547 struct hid_input *hidinput)
1548 {
1549 struct hid_report *report;
1550 int i, k;
1551
1552 list_del(&hidinput->list);
1553 input_free_device(hidinput->input);
1554
1555 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1556 if (k == HID_OUTPUT_REPORT &&
1557 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1558 continue;
1559
1560 list_for_each_entry(report, &hid->report_enum[k].report_list,
1561 list) {
1562
1563 for (i = 0; i < report->maxfield; i++)
1564 if (report->field[i]->hidinput == hidinput)
1565 report->field[i]->hidinput = NULL;
1566 }
1567 }
1568
1569 kfree(hidinput);
1570 }
1571
1572 static struct hid_input *hidinput_match(struct hid_report *report)
1573 {
1574 struct hid_device *hid = report->device;
1575 struct hid_input *hidinput;
1576
1577 list_for_each_entry(hidinput, &hid->inputs, list) {
1578 if (hidinput->report &&
1579 hidinput->report->id == report->id)
1580 return hidinput;
1581 }
1582
1583 return NULL;
1584 }
1585
1586 static inline void hidinput_configure_usages(struct hid_input *hidinput,
1587 struct hid_report *report)
1588 {
1589 int i, j;
1590
1591 for (i = 0; i < report->maxfield; i++)
1592 for (j = 0; j < report->field[i]->maxusage; j++)
1593 hidinput_configure_usage(hidinput, report->field[i],
1594 report->field[i]->usage + j);
1595 }
1596
1597 /*
1598 * Register the input device; print a message.
1599 * Configure the input layer interface
1600 * Read all reports and initialize the absolute field values.
1601 */
1602
1603 int hidinput_connect(struct hid_device *hid, unsigned int force)
1604 {
1605 struct hid_driver *drv = hid->driver;
1606 struct hid_report *report;
1607 struct hid_input *next, *hidinput = NULL;
1608 int i, k;
1609
1610 INIT_LIST_HEAD(&hid->inputs);
1611 INIT_WORK(&hid->led_work, hidinput_led_worker);
1612
1613 if (!force) {
1614 for (i = 0; i < hid->maxcollection; i++) {
1615 struct hid_collection *col = &hid->collection[i];
1616 if (col->type == HID_COLLECTION_APPLICATION ||
1617 col->type == HID_COLLECTION_PHYSICAL)
1618 if (IS_INPUT_APPLICATION(col->usage))
1619 break;
1620 }
1621
1622 if (i == hid->maxcollection)
1623 return -1;
1624 }
1625
1626 report_features(hid);
1627
1628 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1629 if (k == HID_OUTPUT_REPORT &&
1630 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1631 continue;
1632
1633 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1634
1635 if (!report->maxfield)
1636 continue;
1637
1638 /*
1639 * Find the previous hidinput report attached
1640 * to this report id.
1641 */
1642 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
1643 hidinput = hidinput_match(report);
1644
1645 if (!hidinput) {
1646 hidinput = hidinput_allocate(hid);
1647 if (!hidinput)
1648 goto out_unwind;
1649 }
1650
1651 hidinput_configure_usages(hidinput, report);
1652
1653 if (hid->quirks & HID_QUIRK_MULTI_INPUT)
1654 hidinput->report = report;
1655 }
1656 }
1657
1658 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1659 if ((hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1660 !hidinput_has_been_populated(hidinput)) {
1661 /* no need to register an input device not populated */
1662 hidinput_cleanup_hidinput(hid, hidinput);
1663 continue;
1664 }
1665
1666 if (drv->input_configured &&
1667 drv->input_configured(hid, hidinput))
1668 goto out_unwind;
1669 if (input_register_device(hidinput->input))
1670 goto out_unwind;
1671 hidinput->registered = true;
1672 }
1673
1674 if (list_empty(&hid->inputs)) {
1675 hid_err(hid, "No inputs registered, leaving\n");
1676 goto out_unwind;
1677 }
1678
1679 return 0;
1680
1681 out_unwind:
1682 /* unwind the ones we already registered */
1683 hidinput_disconnect(hid);
1684
1685 return -1;
1686 }
1687 EXPORT_SYMBOL_GPL(hidinput_connect);
1688
1689 void hidinput_disconnect(struct hid_device *hid)
1690 {
1691 struct hid_input *hidinput, *next;
1692
1693 hidinput_cleanup_battery(hid);
1694
1695 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1696 list_del(&hidinput->list);
1697 if (hidinput->registered)
1698 input_unregister_device(hidinput->input);
1699 else
1700 input_free_device(hidinput->input);
1701 kfree(hidinput);
1702 }
1703
1704 /* led_work is spawned by input_dev callbacks, but doesn't access the
1705 * parent input_dev at all. Once all input devices are removed, we
1706 * know that led_work will never get restarted, so we can cancel it
1707 * synchronously and are safe. */
1708 cancel_work_sync(&hid->led_work);
1709 }
1710 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1711
CRIS linux kernel tree