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Merge branch 'for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git/jmorris...
[linux/fpc-iii.git] / drivers / hid / hid-input.c
blobd50e7313b171e4e9bd732cbee40a1a5cd5e501b5
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_2011_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_ANSI),
316 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
317 {}
318 };
319
320 static unsigned find_battery_quirk(struct hid_device *hdev)
321 {
322 unsigned quirks = 0;
323 const struct hid_device_id *match;
324
325 match = hid_match_id(hdev, hid_battery_quirks);
326 if (match != NULL)
327 quirks = match->driver_data;
328
329 return quirks;
330 }
331
332 static int hidinput_get_battery_property(struct power_supply *psy,
333 enum power_supply_property prop,
334 union power_supply_propval *val)
335 {
336 struct hid_device *dev = container_of(psy, struct hid_device, battery);
337 int ret = 0;
338 __u8 *buf;
339
340 switch (prop) {
341 case POWER_SUPPLY_PROP_PRESENT:
342 case POWER_SUPPLY_PROP_ONLINE:
343 val->intval = 1;
344 break;
345
346 case POWER_SUPPLY_PROP_CAPACITY:
347
348 buf = kmalloc(2 * sizeof(__u8), GFP_KERNEL);
349 if (!buf) {
350 ret = -ENOMEM;
351 break;
352 }
353 ret = dev->hid_get_raw_report(dev, dev->battery_report_id,
354 buf, 2,
355 dev->battery_report_type);
356
357 if (ret != 2) {
358 ret = -ENODATA;
359 kfree(buf);
360 break;
361 }
362 ret = 0;
363
364 if (dev->battery_min < dev->battery_max &&
365 buf[1] >= dev->battery_min &&
366 buf[1] <= dev->battery_max)
367 val->intval = (100 * (buf[1] - dev->battery_min)) /
368 (dev->battery_max - dev->battery_min);
369 kfree(buf);
370 break;
371
372 case POWER_SUPPLY_PROP_MODEL_NAME:
373 val->strval = dev->name;
374 break;
375
376 case POWER_SUPPLY_PROP_STATUS:
377 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
378 break;
379
380 case POWER_SUPPLY_PROP_SCOPE:
381 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
382 break;
383
384 default:
385 ret = -EINVAL;
386 break;
387 }
388
389 return ret;
390 }
391
392 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
393 {
394 struct power_supply *battery = &dev->battery;
395 int ret;
396 unsigned quirks;
397 s32 min, max;
398
399 if (field->usage->hid != HID_DC_BATTERYSTRENGTH)
400 return false; /* no match */
401
402 if (battery->name != NULL)
403 goto out; /* already initialized? */
404
405 battery->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq);
406 if (battery->name == NULL)
407 goto out;
408
409 battery->type = POWER_SUPPLY_TYPE_BATTERY;
410 battery->properties = hidinput_battery_props;
411 battery->num_properties = ARRAY_SIZE(hidinput_battery_props);
412 battery->use_for_apm = 0;
413 battery->get_property = hidinput_get_battery_property;
414
415 quirks = find_battery_quirk(dev);
416
417 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
418 dev->bus, dev->vendor, dev->product, dev->version, quirks);
419
420 min = field->logical_minimum;
421 max = field->logical_maximum;
422
423 if (quirks & HID_BATTERY_QUIRK_PERCENT) {
424 min = 0;
425 max = 100;
426 }
427
428 if (quirks & HID_BATTERY_QUIRK_FEATURE)
429 report_type = HID_FEATURE_REPORT;
430
431 dev->battery_min = min;
432 dev->battery_max = max;
433 dev->battery_report_type = report_type;
434 dev->battery_report_id = field->report->id;
435
436 ret = power_supply_register(&dev->dev, battery);
437 if (ret != 0) {
438 hid_warn(dev, "can't register power supply: %d\n", ret);
439 kfree(battery->name);
440 battery->name = NULL;
441 }
442
443 power_supply_powers(battery, &dev->dev);
444
445 out:
446 return true;
447 }
448
449 static void hidinput_cleanup_battery(struct hid_device *dev)
450 {
451 if (!dev->battery.name)
452 return;
453
454 power_supply_unregister(&dev->battery);
455 kfree(dev->battery.name);
456 dev->battery.name = NULL;
457 }
458 #else /* !CONFIG_HID_BATTERY_STRENGTH */
459 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
460 struct hid_field *field)
461 {
462 return false;
463 }
464
465 static void hidinput_cleanup_battery(struct hid_device *dev)
466 {
467 }
468 #endif /* CONFIG_HID_BATTERY_STRENGTH */
469
470 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
471 struct hid_usage *usage)
472 {
473 struct input_dev *input = hidinput->input;
474 struct hid_device *device = input_get_drvdata(input);
475 int max = 0, code;
476 unsigned long *bit = NULL;
477
478 field->hidinput = hidinput;
479
480 if (field->flags & HID_MAIN_ITEM_CONSTANT)
481 goto ignore;
482
483 /* Ignore if report count is out of bounds. */
484 if (field->report_count < 1)
485 goto ignore;
486
487 /* only LED usages are supported in output fields */
488 if (field->report_type == HID_OUTPUT_REPORT &&
489 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
490 goto ignore;
491 }
492
493 if (device->driver->input_mapping) {
494 int ret = device->driver->input_mapping(device, hidinput, field,
495 usage, &bit, &max);
496 if (ret > 0)
497 goto mapped;
498 if (ret < 0)
499 goto ignore;
500 }
501
502 switch (usage->hid & HID_USAGE_PAGE) {
503 case HID_UP_UNDEFINED:
504 goto ignore;
505
506 case HID_UP_KEYBOARD:
507 set_bit(EV_REP, input->evbit);
508
509 if ((usage->hid & HID_USAGE) < 256) {
510 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
511 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
512 } else
513 map_key(KEY_UNKNOWN);
514
515 break;
516
517 case HID_UP_BUTTON:
518 code = ((usage->hid - 1) & HID_USAGE);
519
520 switch (field->application) {
521 case HID_GD_MOUSE:
522 case HID_GD_POINTER: code += BTN_MOUSE; break;
523 case HID_GD_JOYSTICK:
524 if (code <= 0xf)
525 code += BTN_JOYSTICK;
526 else
527 code += BTN_TRIGGER_HAPPY - 0x10;
528 break;
529 case HID_GD_GAMEPAD:
530 if (code <= 0xf)
531 code += BTN_GAMEPAD;
532 else
533 code += BTN_TRIGGER_HAPPY - 0x10;
534 break;
535 default:
536 switch (field->physical) {
537 case HID_GD_MOUSE:
538 case HID_GD_POINTER: code += BTN_MOUSE; break;
539 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
540 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
541 default: code += BTN_MISC;
542 }
543 }
544
545 map_key(code);
546 break;
547
548 case HID_UP_SIMULATION:
549 switch (usage->hid & 0xffff) {
550 case 0xba: map_abs(ABS_RUDDER); break;
551 case 0xbb: map_abs(ABS_THROTTLE); break;
552 case 0xc4: map_abs(ABS_GAS); break;
553 case 0xc5: map_abs(ABS_BRAKE); break;
554 case 0xc8: map_abs(ABS_WHEEL); break;
555 default: goto ignore;
556 }
557 break;
558
559 case HID_UP_GENDESK:
560 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
561 switch (usage->hid & 0xf) {
562 case 0x1: map_key_clear(KEY_POWER); break;
563 case 0x2: map_key_clear(KEY_SLEEP); break;
564 case 0x3: map_key_clear(KEY_WAKEUP); break;
565 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
566 case 0x5: map_key_clear(KEY_MENU); break;
567 case 0x6: map_key_clear(KEY_PROG1); break;
568 case 0x7: map_key_clear(KEY_HELP); break;
569 case 0x8: map_key_clear(KEY_EXIT); break;
570 case 0x9: map_key_clear(KEY_SELECT); break;
571 case 0xa: map_key_clear(KEY_RIGHT); break;
572 case 0xb: map_key_clear(KEY_LEFT); break;
573 case 0xc: map_key_clear(KEY_UP); break;
574 case 0xd: map_key_clear(KEY_DOWN); break;
575 case 0xe: map_key_clear(KEY_POWER2); break;
576 case 0xf: map_key_clear(KEY_RESTART); break;
577 default: goto unknown;
578 }
579 break;
580 }
581
582 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
583 switch (usage->hid) {
584 case HID_GD_UP: usage->hat_dir = 1; break;
585 case HID_GD_DOWN: usage->hat_dir = 5; break;
586 case HID_GD_RIGHT: usage->hat_dir = 3; break;
587 case HID_GD_LEFT: usage->hat_dir = 7; break;
588 default: goto unknown;
589 }
590 if (field->dpad) {
591 map_abs(field->dpad);
592 goto ignore;
593 }
594 map_abs(ABS_HAT0X);
595 break;
596 }
597
598 switch (usage->hid) {
599 /* These usage IDs map directly to the usage codes. */
600 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
601 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
602 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
603 if (field->flags & HID_MAIN_ITEM_RELATIVE)
604 map_rel(usage->hid & 0xf);
605 else
606 map_abs(usage->hid & 0xf);
607 break;
608
609 case HID_GD_HATSWITCH:
610 usage->hat_min = field->logical_minimum;
611 usage->hat_max = field->logical_maximum;
612 map_abs(ABS_HAT0X);
613 break;
614
615 case HID_GD_START: map_key_clear(BTN_START); break;
616 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
617
618 default: goto unknown;
619 }
620
621 break;
622
623 case HID_UP_LED:
624 switch (usage->hid & 0xffff) { /* HID-Value: */
625 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
626 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
627 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
628 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
629 case 0x05: map_led (LED_KANA); break; /* "Kana" */
630 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
631 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
632 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
633 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
634 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
635 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
636
637 default: goto ignore;
638 }
639 break;
640
641 case HID_UP_DIGITIZER:
642 switch (usage->hid & 0xff) {
643 case 0x00: /* Undefined */
644 goto ignore;
645
646 case 0x30: /* TipPressure */
647 if (!test_bit(BTN_TOUCH, input->keybit)) {
648 device->quirks |= HID_QUIRK_NOTOUCH;
649 set_bit(EV_KEY, input->evbit);
650 set_bit(BTN_TOUCH, input->keybit);
651 }
652 map_abs_clear(ABS_PRESSURE);
653 break;
654
655 case 0x32: /* InRange */
656 switch (field->physical & 0xff) {
657 case 0x21: map_key(BTN_TOOL_MOUSE); break;
658 case 0x22: map_key(BTN_TOOL_FINGER); break;
659 default: map_key(BTN_TOOL_PEN); break;
660 }
661 break;
662
663 case 0x3c: /* Invert */
664 map_key_clear(BTN_TOOL_RUBBER);
665 break;
666
667 case 0x3d: /* X Tilt */
668 map_abs_clear(ABS_TILT_X);
669 break;
670
671 case 0x3e: /* Y Tilt */
672 map_abs_clear(ABS_TILT_Y);
673 break;
674
675 case 0x33: /* Touch */
676 case 0x42: /* TipSwitch */
677 case 0x43: /* TipSwitch2 */
678 device->quirks &= ~HID_QUIRK_NOTOUCH;
679 map_key_clear(BTN_TOUCH);
680 break;
681
682 case 0x44: /* BarrelSwitch */
683 map_key_clear(BTN_STYLUS);
684 break;
685
686 case 0x46: /* TabletPick */
687 map_key_clear(BTN_STYLUS2);
688 break;
689
690 default: goto unknown;
691 }
692 break;
693
694 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
695 switch (usage->hid & HID_USAGE) {
696 case 0x000: goto ignore;
697 case 0x030: map_key_clear(KEY_POWER); break;
698 case 0x031: map_key_clear(KEY_RESTART); break;
699 case 0x032: map_key_clear(KEY_SLEEP); break;
700 case 0x034: map_key_clear(KEY_SLEEP); break;
701 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
702 case 0x036: map_key_clear(BTN_MISC); break;
703
704 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
705 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
706 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
707 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
708 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
709 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
710 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
711 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
712 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
713
714 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
715 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
716 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
717 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
718 case 0x069: map_key_clear(KEY_RED); break;
719 case 0x06a: map_key_clear(KEY_GREEN); break;
720 case 0x06b: map_key_clear(KEY_BLUE); break;
721 case 0x06c: map_key_clear(KEY_YELLOW); break;
722 case 0x06d: map_key_clear(KEY_ZOOM); break;
723
724 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
725 case 0x083: map_key_clear(KEY_LAST); break;
726 case 0x084: map_key_clear(KEY_ENTER); break;
727 case 0x088: map_key_clear(KEY_PC); break;
728 case 0x089: map_key_clear(KEY_TV); break;
729 case 0x08a: map_key_clear(KEY_WWW); break;
730 case 0x08b: map_key_clear(KEY_DVD); break;
731 case 0x08c: map_key_clear(KEY_PHONE); break;
732 case 0x08d: map_key_clear(KEY_PROGRAM); break;
733 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
734 case 0x08f: map_key_clear(KEY_GAMES); break;
735 case 0x090: map_key_clear(KEY_MEMO); break;
736 case 0x091: map_key_clear(KEY_CD); break;
737 case 0x092: map_key_clear(KEY_VCR); break;
738 case 0x093: map_key_clear(KEY_TUNER); break;
739 case 0x094: map_key_clear(KEY_EXIT); break;
740 case 0x095: map_key_clear(KEY_HELP); break;
741 case 0x096: map_key_clear(KEY_TAPE); break;
742 case 0x097: map_key_clear(KEY_TV2); break;
743 case 0x098: map_key_clear(KEY_SAT); break;
744 case 0x09a: map_key_clear(KEY_PVR); break;
745
746 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
747 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
748 case 0x0a0: map_key_clear(KEY_VCR2); break;
749
750 case 0x0b0: map_key_clear(KEY_PLAY); break;
751 case 0x0b1: map_key_clear(KEY_PAUSE); break;
752 case 0x0b2: map_key_clear(KEY_RECORD); break;
753 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
754 case 0x0b4: map_key_clear(KEY_REWIND); break;
755 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
756 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
757 case 0x0b7: map_key_clear(KEY_STOPCD); break;
758 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
759 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
760 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
761 case 0x0bf: map_key_clear(KEY_SLOW); break;
762
763 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
764 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
765 case 0x0e2: map_key_clear(KEY_MUTE); break;
766 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
767 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
768 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
769 case 0x0f5: map_key_clear(KEY_SLOW); break;
770
771 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
772 case 0x183: map_key_clear(KEY_CONFIG); break;
773 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
774 case 0x185: map_key_clear(KEY_EDITOR); break;
775 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
776 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
777 case 0x188: map_key_clear(KEY_PRESENTATION); break;
778 case 0x189: map_key_clear(KEY_DATABASE); break;
779 case 0x18a: map_key_clear(KEY_MAIL); break;
780 case 0x18b: map_key_clear(KEY_NEWS); break;
781 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
782 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
783 case 0x18e: map_key_clear(KEY_CALENDAR); break;
784 case 0x191: map_key_clear(KEY_FINANCE); break;
785 case 0x192: map_key_clear(KEY_CALC); break;
786 case 0x193: map_key_clear(KEY_PLAYER); break;
787 case 0x194: map_key_clear(KEY_FILE); break;
788 case 0x196: map_key_clear(KEY_WWW); break;
789 case 0x199: map_key_clear(KEY_CHAT); break;
790 case 0x19c: map_key_clear(KEY_LOGOFF); break;
791 case 0x19e: map_key_clear(KEY_COFFEE); break;
792 case 0x1a6: map_key_clear(KEY_HELP); break;
793 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
794 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
795 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
796 case 0x1b6: map_key_clear(KEY_IMAGES); break;
797 case 0x1b7: map_key_clear(KEY_AUDIO); break;
798 case 0x1b8: map_key_clear(KEY_VIDEO); break;
799 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
800 case 0x1bd: map_key_clear(KEY_INFO); break;
801 case 0x201: map_key_clear(KEY_NEW); break;
802 case 0x202: map_key_clear(KEY_OPEN); break;
803 case 0x203: map_key_clear(KEY_CLOSE); break;
804 case 0x204: map_key_clear(KEY_EXIT); break;
805 case 0x207: map_key_clear(KEY_SAVE); break;
806 case 0x208: map_key_clear(KEY_PRINT); break;
807 case 0x209: map_key_clear(KEY_PROPS); break;
808 case 0x21a: map_key_clear(KEY_UNDO); break;
809 case 0x21b: map_key_clear(KEY_COPY); break;
810 case 0x21c: map_key_clear(KEY_CUT); break;
811 case 0x21d: map_key_clear(KEY_PASTE); break;
812 case 0x21f: map_key_clear(KEY_FIND); break;
813 case 0x221: map_key_clear(KEY_SEARCH); break;
814 case 0x222: map_key_clear(KEY_GOTO); break;
815 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
816 case 0x224: map_key_clear(KEY_BACK); break;
817 case 0x225: map_key_clear(KEY_FORWARD); break;
818 case 0x226: map_key_clear(KEY_STOP); break;
819 case 0x227: map_key_clear(KEY_REFRESH); break;
820 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
821 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
822 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
823 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
824 case 0x233: map_key_clear(KEY_SCROLLUP); break;
825 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
826 case 0x238: map_rel(REL_HWHEEL); break;
827 case 0x23d: map_key_clear(KEY_EDIT); break;
828 case 0x25f: map_key_clear(KEY_CANCEL); break;
829 case 0x269: map_key_clear(KEY_INSERT); break;
830 case 0x26a: map_key_clear(KEY_DELETE); break;
831 case 0x279: map_key_clear(KEY_REDO); break;
832
833 case 0x289: map_key_clear(KEY_REPLY); break;
834 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
835 case 0x28c: map_key_clear(KEY_SEND); break;
836
837 default: goto ignore;
838 }
839 break;
840
841 case HID_UP_GENDEVCTRLS:
842 if (hidinput_setup_battery(device, HID_INPUT_REPORT, field))
843 goto ignore;
844 else
845 goto unknown;
846 break;
847
848 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
849 set_bit(EV_REP, input->evbit);
850 switch (usage->hid & HID_USAGE) {
851 case 0x021: map_key_clear(KEY_PRINT); break;
852 case 0x070: map_key_clear(KEY_HP); break;
853 case 0x071: map_key_clear(KEY_CAMERA); break;
854 case 0x072: map_key_clear(KEY_SOUND); break;
855 case 0x073: map_key_clear(KEY_QUESTION); break;
856 case 0x080: map_key_clear(KEY_EMAIL); break;
857 case 0x081: map_key_clear(KEY_CHAT); break;
858 case 0x082: map_key_clear(KEY_SEARCH); break;
859 case 0x083: map_key_clear(KEY_CONNECT); break;
860 case 0x084: map_key_clear(KEY_FINANCE); break;
861 case 0x085: map_key_clear(KEY_SPORT); break;
862 case 0x086: map_key_clear(KEY_SHOP); break;
863 default: goto ignore;
864 }
865 break;
866
867 case HID_UP_HPVENDOR2:
868 set_bit(EV_REP, input->evbit);
869 switch (usage->hid & HID_USAGE) {
870 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
871 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
872 default: goto ignore;
873 }
874 break;
875
876 case HID_UP_MSVENDOR:
877 goto ignore;
878
879 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
880 set_bit(EV_REP, input->evbit);
881 goto ignore;
882
883 case HID_UP_LOGIVENDOR:
884 goto ignore;
885
886 case HID_UP_PID:
887 switch (usage->hid & HID_USAGE) {
888 case 0xa4: map_key_clear(BTN_DEAD); break;
889 default: goto ignore;
890 }
891 break;
892
893 default:
894 unknown:
895 if (field->report_size == 1) {
896 if (field->report->type == HID_OUTPUT_REPORT) {
897 map_led(LED_MISC);
898 break;
899 }
900 map_key(BTN_MISC);
901 break;
902 }
903 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
904 map_rel(REL_MISC);
905 break;
906 }
907 map_abs(ABS_MISC);
908 break;
909 }
910
911 mapped:
912 if (device->driver->input_mapped && device->driver->input_mapped(device,
913 hidinput, field, usage, &bit, &max) < 0)
914 goto ignore;
915
916 set_bit(usage->type, input->evbit);
917
918 while (usage->code <= max && test_and_set_bit(usage->code, bit))
919 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
920
921 if (usage->code > max)
922 goto ignore;
923
924
925 if (usage->type == EV_ABS) {
926
927 int a = field->logical_minimum;
928 int b = field->logical_maximum;
929
930 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
931 a = field->logical_minimum = 0;
932 b = field->logical_maximum = 255;
933 }
934
935 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
936 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
937 else input_set_abs_params(input, usage->code, a, b, 0, 0);
938
939 input_abs_set_res(input, usage->code,
940 hidinput_calc_abs_res(field, usage->code));
941
942 /* use a larger default input buffer for MT devices */
943 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
944 input_set_events_per_packet(input, 60);
945 }
946
947 if (usage->type == EV_ABS &&
948 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
949 int i;
950 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
951 input_set_abs_params(input, i, -1, 1, 0, 0);
952 set_bit(i, input->absbit);
953 }
954 if (usage->hat_dir && !field->dpad)
955 field->dpad = usage->code;
956 }
957
958 /* for those devices which produce Consumer volume usage as relative,
959 * we emulate pressing volumeup/volumedown appropriate number of times
960 * in hidinput_hid_event()
961 */
962 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
963 (usage->code == ABS_VOLUME)) {
964 set_bit(KEY_VOLUMEUP, input->keybit);
965 set_bit(KEY_VOLUMEDOWN, input->keybit);
966 }
967
968 if (usage->type == EV_KEY) {
969 set_bit(EV_MSC, input->evbit);
970 set_bit(MSC_SCAN, input->mscbit);
971 }
972
973 ignore:
974 return;
975
976 }
977
978 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
979 {
980 struct input_dev *input;
981 unsigned *quirks = &hid->quirks;
982
983 if (!field->hidinput)
984 return;
985
986 input = field->hidinput->input;
987
988 if (!usage->type)
989 return;
990
991 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
992 int hat_dir = usage->hat_dir;
993 if (!hat_dir)
994 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
995 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
996 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
997 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
998 return;
999 }
1000
1001 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
1002 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
1003 return;
1004 }
1005
1006 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
1007 if (value) {
1008 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
1009 return;
1010 }
1011 input_event(input, usage->type, usage->code, 0);
1012 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
1013 return;
1014 }
1015
1016 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
1017 int a = field->logical_minimum;
1018 int b = field->logical_maximum;
1019 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
1020 }
1021
1022 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
1023 dbg_hid("Maximum Effects - %d\n",value);
1024 return;
1025 }
1026
1027 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
1028 dbg_hid("PID Pool Report\n");
1029 return;
1030 }
1031
1032 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1033 return;
1034
1035 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1036 (usage->code == ABS_VOLUME)) {
1037 int count = abs(value);
1038 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1039 int i;
1040
1041 for (i = 0; i < count; i++) {
1042 input_event(input, EV_KEY, direction, 1);
1043 input_sync(input);
1044 input_event(input, EV_KEY, direction, 0);
1045 input_sync(input);
1046 }
1047 return;
1048 }
1049
1050 /*
1051 * Ignore out-of-range values as per HID specification,
1052 * section 5.10 and 6.2.25.
1053 *
1054 * The logical_minimum < logical_maximum check is done so that we
1055 * don't unintentionally discard values sent by devices which
1056 * don't specify logical min and max.
1057 */
1058 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1059 (field->logical_minimum < field->logical_maximum) &&
1060 (value < field->logical_minimum ||
1061 value > field->logical_maximum)) {
1062 dbg_hid("Ignoring out-of-range value %x\n", value);
1063 return;
1064 }
1065
1066 /* report the usage code as scancode if the key status has changed */
1067 if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
1068 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1069
1070 input_event(input, usage->type, usage->code, value);
1071
1072 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
1073 input_event(input, usage->type, usage->code, 0);
1074 }
1075
1076 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1077 {
1078 struct hid_input *hidinput;
1079
1080 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1081 return;
1082
1083 list_for_each_entry(hidinput, &hid->inputs, list)
1084 input_sync(hidinput->input);
1085 }
1086 EXPORT_SYMBOL_GPL(hidinput_report_event);
1087
1088 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1089 {
1090 struct hid_report *report;
1091 int i, j;
1092
1093 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1094 for (i = 0; i < report->maxfield; i++) {
1095 *field = report->field[i];
1096 for (j = 0; j < (*field)->maxusage; j++)
1097 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1098 return j;
1099 }
1100 }
1101 return -1;
1102 }
1103 EXPORT_SYMBOL_GPL(hidinput_find_field);
1104
1105 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1106 {
1107 struct hid_report *report;
1108 struct hid_field *field;
1109 int i, j;
1110
1111 list_for_each_entry(report,
1112 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1113 list) {
1114 for (i = 0; i < report->maxfield; i++) {
1115 field = report->field[i];
1116 for (j = 0; j < field->maxusage; j++)
1117 if (field->usage[j].type == EV_LED)
1118 return field;
1119 }
1120 }
1121 return NULL;
1122 }
1123 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1124
1125 unsigned int hidinput_count_leds(struct hid_device *hid)
1126 {
1127 struct hid_report *report;
1128 struct hid_field *field;
1129 int i, j;
1130 unsigned int count = 0;
1131
1132 list_for_each_entry(report,
1133 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1134 list) {
1135 for (i = 0; i < report->maxfield; i++) {
1136 field = report->field[i];
1137 for (j = 0; j < field->maxusage; j++)
1138 if (field->usage[j].type == EV_LED &&
1139 field->value[j])
1140 count += 1;
1141 }
1142 }
1143 return count;
1144 }
1145 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1146
1147 static void hidinput_led_worker(struct work_struct *work)
1148 {
1149 struct hid_device *hid = container_of(work, struct hid_device,
1150 led_work);
1151 struct hid_field *field;
1152 struct hid_report *report;
1153 int len;
1154 __u8 *buf;
1155
1156 field = hidinput_get_led_field(hid);
1157 if (!field)
1158 return;
1159
1160 /*
1161 * field->report is accessed unlocked regarding HID core. So there might
1162 * be another incoming SET-LED request from user-space, which changes
1163 * the LED state while we assemble our outgoing buffer. However, this
1164 * doesn't matter as hid_output_report() correctly converts it into a
1165 * boolean value no matter what information is currently set on the LED
1166 * field (even garbage). So the remote device will always get a valid
1167 * request.
1168 * And in case we send a wrong value, a next led worker is spawned
1169 * for every SET-LED request so the following worker will send the
1170 * correct value, guaranteed!
1171 */
1172
1173 report = field->report;
1174
1175 /* use custom SET_REPORT request if possible (asynchronous) */
1176 if (hid->ll_driver->request)
1177 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1178
1179 /* fall back to generic raw-output-report */
1180 len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1181 buf = kmalloc(len, GFP_KERNEL);
1182 if (!buf)
1183 return;
1184
1185 hid_output_report(report, buf);
1186 /* synchronous output report */
1187 hid->hid_output_raw_report(hid, buf, len, HID_OUTPUT_REPORT);
1188 kfree(buf);
1189 }
1190
1191 static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1192 unsigned int code, int value)
1193 {
1194 struct hid_device *hid = input_get_drvdata(dev);
1195 struct hid_field *field;
1196 int offset;
1197
1198 if (type == EV_FF)
1199 return input_ff_event(dev, type, code, value);
1200
1201 if (type != EV_LED)
1202 return -1;
1203
1204 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1205 hid_warn(dev, "event field not found\n");
1206 return -1;
1207 }
1208
1209 hid_set_field(field, offset, value);
1210
1211 schedule_work(&hid->led_work);
1212 return 0;
1213 }
1214
1215 static int hidinput_open(struct input_dev *dev)
1216 {
1217 struct hid_device *hid = input_get_drvdata(dev);
1218
1219 return hid_hw_open(hid);
1220 }
1221
1222 static void hidinput_close(struct input_dev *dev)
1223 {
1224 struct hid_device *hid = input_get_drvdata(dev);
1225
1226 hid_hw_close(hid);
1227 }
1228
1229 static void report_features(struct hid_device *hid)
1230 {
1231 struct hid_driver *drv = hid->driver;
1232 struct hid_report_enum *rep_enum;
1233 struct hid_report *rep;
1234 int i, j;
1235
1236 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1237 list_for_each_entry(rep, &rep_enum->report_list, list)
1238 for (i = 0; i < rep->maxfield; i++) {
1239 /* Ignore if report count is out of bounds. */
1240 if (rep->field[i]->report_count < 1)
1241 continue;
1242
1243 for (j = 0; j < rep->field[i]->maxusage; j++) {
1244 /* Verify if Battery Strength feature is available */
1245 hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);
1246
1247 if (drv->feature_mapping)
1248 drv->feature_mapping(hid, rep->field[i],
1249 rep->field[i]->usage + j);
1250 }
1251 }
1252 }
1253
1254 static struct hid_input *hidinput_allocate(struct hid_device *hid)
1255 {
1256 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1257 struct input_dev *input_dev = input_allocate_device();
1258 if (!hidinput || !input_dev) {
1259 kfree(hidinput);
1260 input_free_device(input_dev);
1261 hid_err(hid, "Out of memory during hid input probe\n");
1262 return NULL;
1263 }
1264
1265 input_set_drvdata(input_dev, hid);
1266 if (hid->ll_driver->hidinput_input_event)
1267 input_dev->event = hid->ll_driver->hidinput_input_event;
1268 else if (hid->ll_driver->request || hid->hid_output_raw_report)
1269 input_dev->event = hidinput_input_event;
1270 input_dev->open = hidinput_open;
1271 input_dev->close = hidinput_close;
1272 input_dev->setkeycode = hidinput_setkeycode;
1273 input_dev->getkeycode = hidinput_getkeycode;
1274
1275 input_dev->name = hid->name;
1276 input_dev->phys = hid->phys;
1277 input_dev->uniq = hid->uniq;
1278 input_dev->id.bustype = hid->bus;
1279 input_dev->id.vendor = hid->vendor;
1280 input_dev->id.product = hid->product;
1281 input_dev->id.version = hid->version;
1282 input_dev->dev.parent = &hid->dev;
1283 hidinput->input = input_dev;
1284 list_add_tail(&hidinput->list, &hid->inputs);
1285
1286 return hidinput;
1287 }
1288
1289 static bool hidinput_has_been_populated(struct hid_input *hidinput)
1290 {
1291 int i;
1292 unsigned long r = 0;
1293
1294 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
1295 r |= hidinput->input->evbit[i];
1296
1297 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
1298 r |= hidinput->input->keybit[i];
1299
1300 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
1301 r |= hidinput->input->relbit[i];
1302
1303 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
1304 r |= hidinput->input->absbit[i];
1305
1306 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
1307 r |= hidinput->input->mscbit[i];
1308
1309 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
1310 r |= hidinput->input->ledbit[i];
1311
1312 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
1313 r |= hidinput->input->sndbit[i];
1314
1315 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
1316 r |= hidinput->input->ffbit[i];
1317
1318 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
1319 r |= hidinput->input->swbit[i];
1320
1321 return !!r;
1322 }
1323
1324 static void hidinput_cleanup_hidinput(struct hid_device *hid,
1325 struct hid_input *hidinput)
1326 {
1327 struct hid_report *report;
1328 int i, k;
1329
1330 list_del(&hidinput->list);
1331 input_free_device(hidinput->input);
1332
1333 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1334 if (k == HID_OUTPUT_REPORT &&
1335 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1336 continue;
1337
1338 list_for_each_entry(report, &hid->report_enum[k].report_list,
1339 list) {
1340
1341 for (i = 0; i < report->maxfield; i++)
1342 if (report->field[i]->hidinput == hidinput)
1343 report->field[i]->hidinput = NULL;
1344 }
1345 }
1346
1347 kfree(hidinput);
1348 }
1349
1350 /*
1351 * Register the input device; print a message.
1352 * Configure the input layer interface
1353 * Read all reports and initialize the absolute field values.
1354 */
1355
1356 int hidinput_connect(struct hid_device *hid, unsigned int force)
1357 {
1358 struct hid_driver *drv = hid->driver;
1359 struct hid_report *report;
1360 struct hid_input *hidinput = NULL;
1361 int i, j, k;
1362
1363 INIT_LIST_HEAD(&hid->inputs);
1364 INIT_WORK(&hid->led_work, hidinput_led_worker);
1365
1366 if (!force) {
1367 for (i = 0; i < hid->maxcollection; i++) {
1368 struct hid_collection *col = &hid->collection[i];
1369 if (col->type == HID_COLLECTION_APPLICATION ||
1370 col->type == HID_COLLECTION_PHYSICAL)
1371 if (IS_INPUT_APPLICATION(col->usage))
1372 break;
1373 }
1374
1375 if (i == hid->maxcollection)
1376 return -1;
1377 }
1378
1379 report_features(hid);
1380
1381 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1382 if (k == HID_OUTPUT_REPORT &&
1383 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1384 continue;
1385
1386 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1387
1388 if (!report->maxfield)
1389 continue;
1390
1391 if (!hidinput) {
1392 hidinput = hidinput_allocate(hid);
1393 if (!hidinput)
1394 goto out_unwind;
1395 }
1396
1397 for (i = 0; i < report->maxfield; i++)
1398 for (j = 0; j < report->field[i]->maxusage; j++)
1399 hidinput_configure_usage(hidinput, report->field[i],
1400 report->field[i]->usage + j);
1401
1402 if ((hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1403 !hidinput_has_been_populated(hidinput))
1404 continue;
1405
1406 if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
1407 /* This will leave hidinput NULL, so that it
1408 * allocates another one if we have more inputs on
1409 * the same interface. Some devices (e.g. Happ's
1410 * UGCI) cram a lot of unrelated inputs into the
1411 * same interface. */
1412 hidinput->report = report;
1413 if (drv->input_configured)
1414 drv->input_configured(hid, hidinput);
1415 if (input_register_device(hidinput->input))
1416 goto out_cleanup;
1417 hidinput = NULL;
1418 }
1419 }
1420 }
1421
1422 if (hidinput && (hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1423 !hidinput_has_been_populated(hidinput)) {
1424 /* no need to register an input device not populated */
1425 hidinput_cleanup_hidinput(hid, hidinput);
1426 hidinput = NULL;
1427 }
1428
1429 if (list_empty(&hid->inputs)) {
1430 hid_err(hid, "No inputs registered, leaving\n");
1431 goto out_unwind;
1432 }
1433
1434 if (hidinput) {
1435 if (drv->input_configured)
1436 drv->input_configured(hid, hidinput);
1437 if (input_register_device(hidinput->input))
1438 goto out_cleanup;
1439 }
1440
1441 return 0;
1442
1443 out_cleanup:
1444 list_del(&hidinput->list);
1445 input_free_device(hidinput->input);
1446 kfree(hidinput);
1447 out_unwind:
1448 /* unwind the ones we already registered */
1449 hidinput_disconnect(hid);
1450
1451 return -1;
1452 }
1453 EXPORT_SYMBOL_GPL(hidinput_connect);
1454
1455 void hidinput_disconnect(struct hid_device *hid)
1456 {
1457 struct hid_input *hidinput, *next;
1458
1459 hidinput_cleanup_battery(hid);
1460
1461 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1462 list_del(&hidinput->list);
1463 input_unregister_device(hidinput->input);
1464 kfree(hidinput);
1465 }
1466
1467 /* led_work is spawned by input_dev callbacks, but doesn't access the
1468 * parent input_dev at all. Once all input devices are removed, we
1469 * know that led_work will never get restarted, so we can cancel it
1470 * synchronously and are safe. */
1471 cancel_work_sync(&hid->led_work);
1472 }
1473 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1474
Linux with added FPC-III support