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KEYS: Rename public key parameter name arrays
[linux-2.6/btrfs-unstable.git] / drivers / hid / hid-input.c
blob8741d953dcc80acb552bac187ffe6997ad95ca4e
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 * hidinput_calc_abs_res - calculate an absolute axis resolution
197 * @field: the HID report field to calculate resolution for
198 * @code: axis code
199 *
200 * The formula is:
201 * (logical_maximum - logical_minimum)
202 * resolution = ----------------------------------------------------------
203 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent
204 *
205 * as seen in the HID specification v1.11 6.2.2.7 Global Items.
206 *
207 * Only exponent 1 length units are processed. Centimeters and inches are
208 * converted to millimeters. Degrees are converted to radians.
209 */
210 __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
211 {
212 __s32 unit_exponent = field->unit_exponent;
213 __s32 logical_extents = field->logical_maximum -
214 field->logical_minimum;
215 __s32 physical_extents = field->physical_maximum -
216 field->physical_minimum;
217 __s32 prev;
218
219 /* Check if the extents are sane */
220 if (logical_extents <= 0 || physical_extents <= 0)
221 return 0;
222
223 /*
224 * Verify and convert units.
225 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
226 */
227 switch (code) {
228 case ABS_X:
229 case ABS_Y:
230 case ABS_Z:
231 case ABS_MT_POSITION_X:
232 case ABS_MT_POSITION_Y:
233 case ABS_MT_TOOL_X:
234 case ABS_MT_TOOL_Y:
235 case ABS_MT_TOUCH_MAJOR:
236 case ABS_MT_TOUCH_MINOR:
237 if (field->unit & 0xffffff00) /* Not a length */
238 return 0;
239 unit_exponent += hid_snto32(field->unit >> 4, 4) - 1;
240 switch (field->unit & 0xf) {
241 case 0x1: /* If centimeters */
242 /* Convert to millimeters */
243 unit_exponent += 1;
244 break;
245 case 0x3: /* If inches */
246 /* Convert to millimeters */
247 prev = physical_extents;
248 physical_extents *= 254;
249 if (physical_extents < prev)
250 return 0;
251 unit_exponent -= 1;
252 break;
253 default:
254 return 0;
255 }
256 break;
257
258 case ABS_RX:
259 case ABS_RY:
260 case ABS_RZ:
261 case ABS_TILT_X:
262 case ABS_TILT_Y:
263 if (field->unit == 0x14) { /* If degrees */
264 /* Convert to radians */
265 prev = logical_extents;
266 logical_extents *= 573;
267 if (logical_extents < prev)
268 return 0;
269 unit_exponent += 1;
270 } else if (field->unit != 0x12) { /* If not radians */
271 return 0;
272 }
273 break;
274
275 default:
276 return 0;
277 }
278
279 /* Apply negative unit exponent */
280 for (; unit_exponent < 0; unit_exponent++) {
281 prev = logical_extents;
282 logical_extents *= 10;
283 if (logical_extents < prev)
284 return 0;
285 }
286 /* Apply positive unit exponent */
287 for (; unit_exponent > 0; unit_exponent--) {
288 prev = physical_extents;
289 physical_extents *= 10;
290 if (physical_extents < prev)
291 return 0;
292 }
293
294 /* Calculate resolution */
295 return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
296 }
297 EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
298
299 #ifdef CONFIG_HID_BATTERY_STRENGTH
300 static enum power_supply_property hidinput_battery_props[] = {
301 POWER_SUPPLY_PROP_PRESENT,
302 POWER_SUPPLY_PROP_ONLINE,
303 POWER_SUPPLY_PROP_CAPACITY,
304 POWER_SUPPLY_PROP_MODEL_NAME,
305 POWER_SUPPLY_PROP_STATUS,
306 POWER_SUPPLY_PROP_SCOPE,
307 };
308
309 #define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */
310 #define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */
311
312 static const struct hid_device_id hid_battery_quirks[] = {
313 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
314 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
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_ANSI),
321 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
322 {}
323 };
324
325 static unsigned find_battery_quirk(struct hid_device *hdev)
326 {
327 unsigned quirks = 0;
328 const struct hid_device_id *match;
329
330 match = hid_match_id(hdev, hid_battery_quirks);
331 if (match != NULL)
332 quirks = match->driver_data;
333
334 return quirks;
335 }
336
337 static int hidinput_get_battery_property(struct power_supply *psy,
338 enum power_supply_property prop,
339 union power_supply_propval *val)
340 {
341 struct hid_device *dev = container_of(psy, struct hid_device, battery);
342 int ret = 0;
343 __u8 *buf;
344
345 switch (prop) {
346 case POWER_SUPPLY_PROP_PRESENT:
347 case POWER_SUPPLY_PROP_ONLINE:
348 val->intval = 1;
349 break;
350
351 case POWER_SUPPLY_PROP_CAPACITY:
352
353 buf = kmalloc(2 * sizeof(__u8), GFP_KERNEL);
354 if (!buf) {
355 ret = -ENOMEM;
356 break;
357 }
358 ret = dev->hid_get_raw_report(dev, dev->battery_report_id,
359 buf, 2,
360 dev->battery_report_type);
361
362 if (ret != 2) {
363 ret = -ENODATA;
364 kfree(buf);
365 break;
366 }
367 ret = 0;
368
369 if (dev->battery_min < dev->battery_max &&
370 buf[1] >= dev->battery_min &&
371 buf[1] <= dev->battery_max)
372 val->intval = (100 * (buf[1] - dev->battery_min)) /
373 (dev->battery_max - dev->battery_min);
374 kfree(buf);
375 break;
376
377 case POWER_SUPPLY_PROP_MODEL_NAME:
378 val->strval = dev->name;
379 break;
380
381 case POWER_SUPPLY_PROP_STATUS:
382 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
383 break;
384
385 case POWER_SUPPLY_PROP_SCOPE:
386 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
387 break;
388
389 default:
390 ret = -EINVAL;
391 break;
392 }
393
394 return ret;
395 }
396
397 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
398 {
399 struct power_supply *battery = &dev->battery;
400 int ret;
401 unsigned quirks;
402 s32 min, max;
403
404 if (field->usage->hid != HID_DC_BATTERYSTRENGTH)
405 return false; /* no match */
406
407 if (battery->name != NULL)
408 goto out; /* already initialized? */
409
410 battery->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq);
411 if (battery->name == NULL)
412 goto out;
413
414 battery->type = POWER_SUPPLY_TYPE_BATTERY;
415 battery->properties = hidinput_battery_props;
416 battery->num_properties = ARRAY_SIZE(hidinput_battery_props);
417 battery->use_for_apm = 0;
418 battery->get_property = hidinput_get_battery_property;
419
420 quirks = find_battery_quirk(dev);
421
422 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
423 dev->bus, dev->vendor, dev->product, dev->version, quirks);
424
425 min = field->logical_minimum;
426 max = field->logical_maximum;
427
428 if (quirks & HID_BATTERY_QUIRK_PERCENT) {
429 min = 0;
430 max = 100;
431 }
432
433 if (quirks & HID_BATTERY_QUIRK_FEATURE)
434 report_type = HID_FEATURE_REPORT;
435
436 dev->battery_min = min;
437 dev->battery_max = max;
438 dev->battery_report_type = report_type;
439 dev->battery_report_id = field->report->id;
440
441 ret = power_supply_register(&dev->dev, battery);
442 if (ret != 0) {
443 hid_warn(dev, "can't register power supply: %d\n", ret);
444 kfree(battery->name);
445 battery->name = NULL;
446 }
447
448 power_supply_powers(battery, &dev->dev);
449
450 out:
451 return true;
452 }
453
454 static void hidinput_cleanup_battery(struct hid_device *dev)
455 {
456 if (!dev->battery.name)
457 return;
458
459 power_supply_unregister(&dev->battery);
460 kfree(dev->battery.name);
461 dev->battery.name = NULL;
462 }
463 #else /* !CONFIG_HID_BATTERY_STRENGTH */
464 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
465 struct hid_field *field)
466 {
467 return false;
468 }
469
470 static void hidinput_cleanup_battery(struct hid_device *dev)
471 {
472 }
473 #endif /* CONFIG_HID_BATTERY_STRENGTH */
474
475 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
476 struct hid_usage *usage)
477 {
478 struct input_dev *input = hidinput->input;
479 struct hid_device *device = input_get_drvdata(input);
480 int max = 0, code;
481 unsigned long *bit = NULL;
482
483 field->hidinput = hidinput;
484
485 if (field->flags & HID_MAIN_ITEM_CONSTANT)
486 goto ignore;
487
488 /* Ignore if report count is out of bounds. */
489 if (field->report_count < 1)
490 goto ignore;
491
492 /* only LED usages are supported in output fields */
493 if (field->report_type == HID_OUTPUT_REPORT &&
494 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
495 goto ignore;
496 }
497
498 if (device->driver->input_mapping) {
499 int ret = device->driver->input_mapping(device, hidinput, field,
500 usage, &bit, &max);
501 if (ret > 0)
502 goto mapped;
503 if (ret < 0)
504 goto ignore;
505 }
506
507 switch (usage->hid & HID_USAGE_PAGE) {
508 case HID_UP_UNDEFINED:
509 goto ignore;
510
511 case HID_UP_KEYBOARD:
512 set_bit(EV_REP, input->evbit);
513
514 if ((usage->hid & HID_USAGE) < 256) {
515 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
516 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
517 } else
518 map_key(KEY_UNKNOWN);
519
520 break;
521
522 case HID_UP_BUTTON:
523 code = ((usage->hid - 1) & HID_USAGE);
524
525 switch (field->application) {
526 case HID_GD_MOUSE:
527 case HID_GD_POINTER: code += BTN_MOUSE; break;
528 case HID_GD_JOYSTICK:
529 if (code <= 0xf)
530 code += BTN_JOYSTICK;
531 else
532 code += BTN_TRIGGER_HAPPY - 0x10;
533 break;
534 case HID_GD_GAMEPAD:
535 if (code <= 0xf)
536 code += BTN_GAMEPAD;
537 else
538 code += BTN_TRIGGER_HAPPY - 0x10;
539 break;
540 default:
541 switch (field->physical) {
542 case HID_GD_MOUSE:
543 case HID_GD_POINTER: code += BTN_MOUSE; break;
544 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
545 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
546 default: code += BTN_MISC;
547 }
548 }
549
550 map_key(code);
551 break;
552
553 case HID_UP_SIMULATION:
554 switch (usage->hid & 0xffff) {
555 case 0xba: map_abs(ABS_RUDDER); break;
556 case 0xbb: map_abs(ABS_THROTTLE); break;
557 case 0xc4: map_abs(ABS_GAS); break;
558 case 0xc5: map_abs(ABS_BRAKE); break;
559 case 0xc8: map_abs(ABS_WHEEL); break;
560 default: goto ignore;
561 }
562 break;
563
564 case HID_UP_GENDESK:
565 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
566 switch (usage->hid & 0xf) {
567 case 0x1: map_key_clear(KEY_POWER); break;
568 case 0x2: map_key_clear(KEY_SLEEP); break;
569 case 0x3: map_key_clear(KEY_WAKEUP); break;
570 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
571 case 0x5: map_key_clear(KEY_MENU); break;
572 case 0x6: map_key_clear(KEY_PROG1); break;
573 case 0x7: map_key_clear(KEY_HELP); break;
574 case 0x8: map_key_clear(KEY_EXIT); break;
575 case 0x9: map_key_clear(KEY_SELECT); break;
576 case 0xa: map_key_clear(KEY_RIGHT); break;
577 case 0xb: map_key_clear(KEY_LEFT); break;
578 case 0xc: map_key_clear(KEY_UP); break;
579 case 0xd: map_key_clear(KEY_DOWN); break;
580 case 0xe: map_key_clear(KEY_POWER2); break;
581 case 0xf: map_key_clear(KEY_RESTART); break;
582 default: goto unknown;
583 }
584 break;
585 }
586
587 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
588 switch (usage->hid) {
589 case HID_GD_UP: usage->hat_dir = 1; break;
590 case HID_GD_DOWN: usage->hat_dir = 5; break;
591 case HID_GD_RIGHT: usage->hat_dir = 3; break;
592 case HID_GD_LEFT: usage->hat_dir = 7; break;
593 default: goto unknown;
594 }
595 if (field->dpad) {
596 map_abs(field->dpad);
597 goto ignore;
598 }
599 map_abs(ABS_HAT0X);
600 break;
601 }
602
603 switch (usage->hid) {
604 /* These usage IDs map directly to the usage codes. */
605 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
606 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
607 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
608 if (field->flags & HID_MAIN_ITEM_RELATIVE)
609 map_rel(usage->hid & 0xf);
610 else
611 map_abs(usage->hid & 0xf);
612 break;
613
614 case HID_GD_HATSWITCH:
615 usage->hat_min = field->logical_minimum;
616 usage->hat_max = field->logical_maximum;
617 map_abs(ABS_HAT0X);
618 break;
619
620 case HID_GD_START: map_key_clear(BTN_START); break;
621 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
622
623 default: goto unknown;
624 }
625
626 break;
627
628 case HID_UP_LED:
629 switch (usage->hid & 0xffff) { /* HID-Value: */
630 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
631 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
632 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
633 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
634 case 0x05: map_led (LED_KANA); break; /* "Kana" */
635 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
636 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
637 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
638 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
639 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
640 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
641
642 default: goto ignore;
643 }
644 break;
645
646 case HID_UP_DIGITIZER:
647 switch (usage->hid & 0xff) {
648 case 0x00: /* Undefined */
649 goto ignore;
650
651 case 0x30: /* TipPressure */
652 if (!test_bit(BTN_TOUCH, input->keybit)) {
653 device->quirks |= HID_QUIRK_NOTOUCH;
654 set_bit(EV_KEY, input->evbit);
655 set_bit(BTN_TOUCH, input->keybit);
656 }
657 map_abs_clear(ABS_PRESSURE);
658 break;
659
660 case 0x32: /* InRange */
661 switch (field->physical & 0xff) {
662 case 0x21: map_key(BTN_TOOL_MOUSE); break;
663 case 0x22: map_key(BTN_TOOL_FINGER); break;
664 default: map_key(BTN_TOOL_PEN); break;
665 }
666 break;
667
668 case 0x3c: /* Invert */
669 map_key_clear(BTN_TOOL_RUBBER);
670 break;
671
672 case 0x3d: /* X Tilt */
673 map_abs_clear(ABS_TILT_X);
674 break;
675
676 case 0x3e: /* Y Tilt */
677 map_abs_clear(ABS_TILT_Y);
678 break;
679
680 case 0x33: /* Touch */
681 case 0x42: /* TipSwitch */
682 case 0x43: /* TipSwitch2 */
683 device->quirks &= ~HID_QUIRK_NOTOUCH;
684 map_key_clear(BTN_TOUCH);
685 break;
686
687 case 0x44: /* BarrelSwitch */
688 map_key_clear(BTN_STYLUS);
689 break;
690
691 case 0x46: /* TabletPick */
692 map_key_clear(BTN_STYLUS2);
693 break;
694
695 default: goto unknown;
696 }
697 break;
698
699 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
700 switch (usage->hid & HID_USAGE) {
701 case 0x000: goto ignore;
702 case 0x030: map_key_clear(KEY_POWER); break;
703 case 0x031: map_key_clear(KEY_RESTART); break;
704 case 0x032: map_key_clear(KEY_SLEEP); break;
705 case 0x034: map_key_clear(KEY_SLEEP); break;
706 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
707 case 0x036: map_key_clear(BTN_MISC); break;
708
709 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
710 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
711 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
712 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
713 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
714 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
715 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
716 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
717 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
718
719 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
720 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
721 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
722 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
723 case 0x069: map_key_clear(KEY_RED); break;
724 case 0x06a: map_key_clear(KEY_GREEN); break;
725 case 0x06b: map_key_clear(KEY_BLUE); break;
726 case 0x06c: map_key_clear(KEY_YELLOW); break;
727 case 0x06d: map_key_clear(KEY_ZOOM); break;
728
729 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
730 case 0x083: map_key_clear(KEY_LAST); break;
731 case 0x084: map_key_clear(KEY_ENTER); break;
732 case 0x088: map_key_clear(KEY_PC); break;
733 case 0x089: map_key_clear(KEY_TV); break;
734 case 0x08a: map_key_clear(KEY_WWW); break;
735 case 0x08b: map_key_clear(KEY_DVD); break;
736 case 0x08c: map_key_clear(KEY_PHONE); break;
737 case 0x08d: map_key_clear(KEY_PROGRAM); break;
738 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
739 case 0x08f: map_key_clear(KEY_GAMES); break;
740 case 0x090: map_key_clear(KEY_MEMO); break;
741 case 0x091: map_key_clear(KEY_CD); break;
742 case 0x092: map_key_clear(KEY_VCR); break;
743 case 0x093: map_key_clear(KEY_TUNER); break;
744 case 0x094: map_key_clear(KEY_EXIT); break;
745 case 0x095: map_key_clear(KEY_HELP); break;
746 case 0x096: map_key_clear(KEY_TAPE); break;
747 case 0x097: map_key_clear(KEY_TV2); break;
748 case 0x098: map_key_clear(KEY_SAT); break;
749 case 0x09a: map_key_clear(KEY_PVR); break;
750
751 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
752 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
753 case 0x0a0: map_key_clear(KEY_VCR2); break;
754
755 case 0x0b0: map_key_clear(KEY_PLAY); break;
756 case 0x0b1: map_key_clear(KEY_PAUSE); break;
757 case 0x0b2: map_key_clear(KEY_RECORD); break;
758 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
759 case 0x0b4: map_key_clear(KEY_REWIND); break;
760 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
761 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
762 case 0x0b7: map_key_clear(KEY_STOPCD); break;
763 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
764 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
765 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
766 case 0x0bf: map_key_clear(KEY_SLOW); break;
767
768 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
769 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
770 case 0x0e2: map_key_clear(KEY_MUTE); break;
771 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
772 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
773 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
774 case 0x0f5: map_key_clear(KEY_SLOW); break;
775
776 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
777 case 0x183: map_key_clear(KEY_CONFIG); break;
778 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
779 case 0x185: map_key_clear(KEY_EDITOR); break;
780 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
781 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
782 case 0x188: map_key_clear(KEY_PRESENTATION); break;
783 case 0x189: map_key_clear(KEY_DATABASE); break;
784 case 0x18a: map_key_clear(KEY_MAIL); break;
785 case 0x18b: map_key_clear(KEY_NEWS); break;
786 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
787 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
788 case 0x18e: map_key_clear(KEY_CALENDAR); break;
789 case 0x191: map_key_clear(KEY_FINANCE); break;
790 case 0x192: map_key_clear(KEY_CALC); break;
791 case 0x193: map_key_clear(KEY_PLAYER); break;
792 case 0x194: map_key_clear(KEY_FILE); break;
793 case 0x196: map_key_clear(KEY_WWW); break;
794 case 0x199: map_key_clear(KEY_CHAT); break;
795 case 0x19c: map_key_clear(KEY_LOGOFF); break;
796 case 0x19e: map_key_clear(KEY_COFFEE); break;
797 case 0x1a6: map_key_clear(KEY_HELP); break;
798 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
799 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
800 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
801 case 0x1b6: map_key_clear(KEY_IMAGES); break;
802 case 0x1b7: map_key_clear(KEY_AUDIO); break;
803 case 0x1b8: map_key_clear(KEY_VIDEO); break;
804 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
805 case 0x1bd: map_key_clear(KEY_INFO); break;
806 case 0x201: map_key_clear(KEY_NEW); break;
807 case 0x202: map_key_clear(KEY_OPEN); break;
808 case 0x203: map_key_clear(KEY_CLOSE); break;
809 case 0x204: map_key_clear(KEY_EXIT); break;
810 case 0x207: map_key_clear(KEY_SAVE); break;
811 case 0x208: map_key_clear(KEY_PRINT); break;
812 case 0x209: map_key_clear(KEY_PROPS); break;
813 case 0x21a: map_key_clear(KEY_UNDO); break;
814 case 0x21b: map_key_clear(KEY_COPY); break;
815 case 0x21c: map_key_clear(KEY_CUT); break;
816 case 0x21d: map_key_clear(KEY_PASTE); break;
817 case 0x21f: map_key_clear(KEY_FIND); break;
818 case 0x221: map_key_clear(KEY_SEARCH); break;
819 case 0x222: map_key_clear(KEY_GOTO); break;
820 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
821 case 0x224: map_key_clear(KEY_BACK); break;
822 case 0x225: map_key_clear(KEY_FORWARD); break;
823 case 0x226: map_key_clear(KEY_STOP); break;
824 case 0x227: map_key_clear(KEY_REFRESH); break;
825 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
826 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
827 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
828 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
829 case 0x233: map_key_clear(KEY_SCROLLUP); break;
830 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
831 case 0x238: map_rel(REL_HWHEEL); break;
832 case 0x23d: map_key_clear(KEY_EDIT); break;
833 case 0x25f: map_key_clear(KEY_CANCEL); break;
834 case 0x269: map_key_clear(KEY_INSERT); break;
835 case 0x26a: map_key_clear(KEY_DELETE); break;
836 case 0x279: map_key_clear(KEY_REDO); break;
837
838 case 0x289: map_key_clear(KEY_REPLY); break;
839 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
840 case 0x28c: map_key_clear(KEY_SEND); break;
841
842 default: goto ignore;
843 }
844 break;
845
846 case HID_UP_GENDEVCTRLS:
847 if (hidinput_setup_battery(device, HID_INPUT_REPORT, field))
848 goto ignore;
849 else
850 goto unknown;
851 break;
852
853 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
854 set_bit(EV_REP, input->evbit);
855 switch (usage->hid & HID_USAGE) {
856 case 0x021: map_key_clear(KEY_PRINT); break;
857 case 0x070: map_key_clear(KEY_HP); break;
858 case 0x071: map_key_clear(KEY_CAMERA); break;
859 case 0x072: map_key_clear(KEY_SOUND); break;
860 case 0x073: map_key_clear(KEY_QUESTION); break;
861 case 0x080: map_key_clear(KEY_EMAIL); break;
862 case 0x081: map_key_clear(KEY_CHAT); break;
863 case 0x082: map_key_clear(KEY_SEARCH); break;
864 case 0x083: map_key_clear(KEY_CONNECT); break;
865 case 0x084: map_key_clear(KEY_FINANCE); break;
866 case 0x085: map_key_clear(KEY_SPORT); break;
867 case 0x086: map_key_clear(KEY_SHOP); break;
868 default: goto ignore;
869 }
870 break;
871
872 case HID_UP_HPVENDOR2:
873 set_bit(EV_REP, input->evbit);
874 switch (usage->hid & HID_USAGE) {
875 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
876 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
877 default: goto ignore;
878 }
879 break;
880
881 case HID_UP_MSVENDOR:
882 goto ignore;
883
884 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
885 set_bit(EV_REP, input->evbit);
886 goto ignore;
887
888 case HID_UP_LOGIVENDOR:
889 goto ignore;
890
891 case HID_UP_PID:
892 switch (usage->hid & HID_USAGE) {
893 case 0xa4: map_key_clear(BTN_DEAD); break;
894 default: goto ignore;
895 }
896 break;
897
898 default:
899 unknown:
900 if (field->report_size == 1) {
901 if (field->report->type == HID_OUTPUT_REPORT) {
902 map_led(LED_MISC);
903 break;
904 }
905 map_key(BTN_MISC);
906 break;
907 }
908 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
909 map_rel(REL_MISC);
910 break;
911 }
912 map_abs(ABS_MISC);
913 break;
914 }
915
916 mapped:
917 if (device->driver->input_mapped && device->driver->input_mapped(device,
918 hidinput, field, usage, &bit, &max) < 0)
919 goto ignore;
920
921 set_bit(usage->type, input->evbit);
922
923 while (usage->code <= max && test_and_set_bit(usage->code, bit))
924 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
925
926 if (usage->code > max)
927 goto ignore;
928
929
930 if (usage->type == EV_ABS) {
931
932 int a = field->logical_minimum;
933 int b = field->logical_maximum;
934
935 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
936 a = field->logical_minimum = 0;
937 b = field->logical_maximum = 255;
938 }
939
940 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
941 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
942 else input_set_abs_params(input, usage->code, a, b, 0, 0);
943
944 input_abs_set_res(input, usage->code,
945 hidinput_calc_abs_res(field, usage->code));
946
947 /* use a larger default input buffer for MT devices */
948 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
949 input_set_events_per_packet(input, 60);
950 }
951
952 if (usage->type == EV_ABS &&
953 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
954 int i;
955 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
956 input_set_abs_params(input, i, -1, 1, 0, 0);
957 set_bit(i, input->absbit);
958 }
959 if (usage->hat_dir && !field->dpad)
960 field->dpad = usage->code;
961 }
962
963 /* for those devices which produce Consumer volume usage as relative,
964 * we emulate pressing volumeup/volumedown appropriate number of times
965 * in hidinput_hid_event()
966 */
967 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
968 (usage->code == ABS_VOLUME)) {
969 set_bit(KEY_VOLUMEUP, input->keybit);
970 set_bit(KEY_VOLUMEDOWN, input->keybit);
971 }
972
973 if (usage->type == EV_KEY) {
974 set_bit(EV_MSC, input->evbit);
975 set_bit(MSC_SCAN, input->mscbit);
976 }
977
978 ignore:
979 return;
980
981 }
982
983 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
984 {
985 struct input_dev *input;
986 unsigned *quirks = &hid->quirks;
987
988 if (!field->hidinput)
989 return;
990
991 input = field->hidinput->input;
992
993 if (!usage->type)
994 return;
995
996 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
997 int hat_dir = usage->hat_dir;
998 if (!hat_dir)
999 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
1000 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
1001 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
1002 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1003 return;
1004 }
1005
1006 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
1007 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
1008 return;
1009 }
1010
1011 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
1012 if (value) {
1013 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
1014 return;
1015 }
1016 input_event(input, usage->type, usage->code, 0);
1017 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
1018 return;
1019 }
1020
1021 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
1022 int a = field->logical_minimum;
1023 int b = field->logical_maximum;
1024 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
1025 }
1026
1027 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
1028 dbg_hid("Maximum Effects - %d\n",value);
1029 return;
1030 }
1031
1032 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
1033 dbg_hid("PID Pool Report\n");
1034 return;
1035 }
1036
1037 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1038 return;
1039
1040 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1041 (usage->code == ABS_VOLUME)) {
1042 int count = abs(value);
1043 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1044 int i;
1045
1046 for (i = 0; i < count; i++) {
1047 input_event(input, EV_KEY, direction, 1);
1048 input_sync(input);
1049 input_event(input, EV_KEY, direction, 0);
1050 input_sync(input);
1051 }
1052 return;
1053 }
1054
1055 /*
1056 * Ignore out-of-range values as per HID specification,
1057 * section 5.10 and 6.2.25.
1058 *
1059 * The logical_minimum < logical_maximum check is done so that we
1060 * don't unintentionally discard values sent by devices which
1061 * don't specify logical min and max.
1062 */
1063 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1064 (field->logical_minimum < field->logical_maximum) &&
1065 (value < field->logical_minimum ||
1066 value > field->logical_maximum)) {
1067 dbg_hid("Ignoring out-of-range value %x\n", value);
1068 return;
1069 }
1070
1071 /* report the usage code as scancode if the key status has changed */
1072 if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
1073 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1074
1075 input_event(input, usage->type, usage->code, value);
1076
1077 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
1078 input_event(input, usage->type, usage->code, 0);
1079 }
1080
1081 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1082 {
1083 struct hid_input *hidinput;
1084
1085 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1086 return;
1087
1088 list_for_each_entry(hidinput, &hid->inputs, list)
1089 input_sync(hidinput->input);
1090 }
1091 EXPORT_SYMBOL_GPL(hidinput_report_event);
1092
1093 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1094 {
1095 struct hid_report *report;
1096 int i, j;
1097
1098 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1099 for (i = 0; i < report->maxfield; i++) {
1100 *field = report->field[i];
1101 for (j = 0; j < (*field)->maxusage; j++)
1102 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1103 return j;
1104 }
1105 }
1106 return -1;
1107 }
1108 EXPORT_SYMBOL_GPL(hidinput_find_field);
1109
1110 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1111 {
1112 struct hid_report *report;
1113 struct hid_field *field;
1114 int i, j;
1115
1116 list_for_each_entry(report,
1117 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1118 list) {
1119 for (i = 0; i < report->maxfield; i++) {
1120 field = report->field[i];
1121 for (j = 0; j < field->maxusage; j++)
1122 if (field->usage[j].type == EV_LED)
1123 return field;
1124 }
1125 }
1126 return NULL;
1127 }
1128 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1129
1130 unsigned int hidinput_count_leds(struct hid_device *hid)
1131 {
1132 struct hid_report *report;
1133 struct hid_field *field;
1134 int i, j;
1135 unsigned int count = 0;
1136
1137 list_for_each_entry(report,
1138 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1139 list) {
1140 for (i = 0; i < report->maxfield; i++) {
1141 field = report->field[i];
1142 for (j = 0; j < field->maxusage; j++)
1143 if (field->usage[j].type == EV_LED &&
1144 field->value[j])
1145 count += 1;
1146 }
1147 }
1148 return count;
1149 }
1150 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1151
1152 static void hidinput_led_worker(struct work_struct *work)
1153 {
1154 struct hid_device *hid = container_of(work, struct hid_device,
1155 led_work);
1156 struct hid_field *field;
1157 struct hid_report *report;
1158 int len;
1159 __u8 *buf;
1160
1161 field = hidinput_get_led_field(hid);
1162 if (!field)
1163 return;
1164
1165 /*
1166 * field->report is accessed unlocked regarding HID core. So there might
1167 * be another incoming SET-LED request from user-space, which changes
1168 * the LED state while we assemble our outgoing buffer. However, this
1169 * doesn't matter as hid_output_report() correctly converts it into a
1170 * boolean value no matter what information is currently set on the LED
1171 * field (even garbage). So the remote device will always get a valid
1172 * request.
1173 * And in case we send a wrong value, a next led worker is spawned
1174 * for every SET-LED request so the following worker will send the
1175 * correct value, guaranteed!
1176 */
1177
1178 report = field->report;
1179
1180 /* use custom SET_REPORT request if possible (asynchronous) */
1181 if (hid->ll_driver->request)
1182 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1183
1184 /* fall back to generic raw-output-report */
1185 len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1186 buf = kmalloc(len, GFP_KERNEL);
1187 if (!buf)
1188 return;
1189
1190 hid_output_report(report, buf);
1191 /* synchronous output report */
1192 hid->hid_output_raw_report(hid, buf, len, HID_OUTPUT_REPORT);
1193 kfree(buf);
1194 }
1195
1196 static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1197 unsigned int code, int value)
1198 {
1199 struct hid_device *hid = input_get_drvdata(dev);
1200 struct hid_field *field;
1201 int offset;
1202
1203 if (type == EV_FF)
1204 return input_ff_event(dev, type, code, value);
1205
1206 if (type != EV_LED)
1207 return -1;
1208
1209 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1210 hid_warn(dev, "event field not found\n");
1211 return -1;
1212 }
1213
1214 hid_set_field(field, offset, value);
1215
1216 schedule_work(&hid->led_work);
1217 return 0;
1218 }
1219
1220 static int hidinput_open(struct input_dev *dev)
1221 {
1222 struct hid_device *hid = input_get_drvdata(dev);
1223
1224 return hid_hw_open(hid);
1225 }
1226
1227 static void hidinput_close(struct input_dev *dev)
1228 {
1229 struct hid_device *hid = input_get_drvdata(dev);
1230
1231 hid_hw_close(hid);
1232 }
1233
1234 static void report_features(struct hid_device *hid)
1235 {
1236 struct hid_driver *drv = hid->driver;
1237 struct hid_report_enum *rep_enum;
1238 struct hid_report *rep;
1239 int i, j;
1240
1241 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1242 list_for_each_entry(rep, &rep_enum->report_list, list)
1243 for (i = 0; i < rep->maxfield; i++) {
1244 /* Ignore if report count is out of bounds. */
1245 if (rep->field[i]->report_count < 1)
1246 continue;
1247
1248 for (j = 0; j < rep->field[i]->maxusage; j++) {
1249 /* Verify if Battery Strength feature is available */
1250 hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);
1251
1252 if (drv->feature_mapping)
1253 drv->feature_mapping(hid, rep->field[i],
1254 rep->field[i]->usage + j);
1255 }
1256 }
1257 }
1258
1259 static struct hid_input *hidinput_allocate(struct hid_device *hid)
1260 {
1261 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1262 struct input_dev *input_dev = input_allocate_device();
1263 if (!hidinput || !input_dev) {
1264 kfree(hidinput);
1265 input_free_device(input_dev);
1266 hid_err(hid, "Out of memory during hid input probe\n");
1267 return NULL;
1268 }
1269
1270 input_set_drvdata(input_dev, hid);
1271 if (hid->ll_driver->hidinput_input_event)
1272 input_dev->event = hid->ll_driver->hidinput_input_event;
1273 else if (hid->ll_driver->request || hid->hid_output_raw_report)
1274 input_dev->event = hidinput_input_event;
1275 input_dev->open = hidinput_open;
1276 input_dev->close = hidinput_close;
1277 input_dev->setkeycode = hidinput_setkeycode;
1278 input_dev->getkeycode = hidinput_getkeycode;
1279
1280 input_dev->name = hid->name;
1281 input_dev->phys = hid->phys;
1282 input_dev->uniq = hid->uniq;
1283 input_dev->id.bustype = hid->bus;
1284 input_dev->id.vendor = hid->vendor;
1285 input_dev->id.product = hid->product;
1286 input_dev->id.version = hid->version;
1287 input_dev->dev.parent = hid->dev.parent;
1288 hidinput->input = input_dev;
1289 list_add_tail(&hidinput->list, &hid->inputs);
1290
1291 return hidinput;
1292 }
1293
1294 static bool hidinput_has_been_populated(struct hid_input *hidinput)
1295 {
1296 int i;
1297 unsigned long r = 0;
1298
1299 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
1300 r |= hidinput->input->evbit[i];
1301
1302 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
1303 r |= hidinput->input->keybit[i];
1304
1305 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
1306 r |= hidinput->input->relbit[i];
1307
1308 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
1309 r |= hidinput->input->absbit[i];
1310
1311 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
1312 r |= hidinput->input->mscbit[i];
1313
1314 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
1315 r |= hidinput->input->ledbit[i];
1316
1317 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
1318 r |= hidinput->input->sndbit[i];
1319
1320 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
1321 r |= hidinput->input->ffbit[i];
1322
1323 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
1324 r |= hidinput->input->swbit[i];
1325
1326 return !!r;
1327 }
1328
1329 static void hidinput_cleanup_hidinput(struct hid_device *hid,
1330 struct hid_input *hidinput)
1331 {
1332 struct hid_report *report;
1333 int i, k;
1334
1335 list_del(&hidinput->list);
1336 input_free_device(hidinput->input);
1337
1338 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1339 if (k == HID_OUTPUT_REPORT &&
1340 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1341 continue;
1342
1343 list_for_each_entry(report, &hid->report_enum[k].report_list,
1344 list) {
1345
1346 for (i = 0; i < report->maxfield; i++)
1347 if (report->field[i]->hidinput == hidinput)
1348 report->field[i]->hidinput = NULL;
1349 }
1350 }
1351
1352 kfree(hidinput);
1353 }
1354
1355 /*
1356 * Register the input device; print a message.
1357 * Configure the input layer interface
1358 * Read all reports and initialize the absolute field values.
1359 */
1360
1361 int hidinput_connect(struct hid_device *hid, unsigned int force)
1362 {
1363 struct hid_driver *drv = hid->driver;
1364 struct hid_report *report;
1365 struct hid_input *hidinput = NULL;
1366 int i, j, k;
1367
1368 INIT_LIST_HEAD(&hid->inputs);
1369 INIT_WORK(&hid->led_work, hidinput_led_worker);
1370
1371 if (!force) {
1372 for (i = 0; i < hid->maxcollection; i++) {
1373 struct hid_collection *col = &hid->collection[i];
1374 if (col->type == HID_COLLECTION_APPLICATION ||
1375 col->type == HID_COLLECTION_PHYSICAL)
1376 if (IS_INPUT_APPLICATION(col->usage))
1377 break;
1378 }
1379
1380 if (i == hid->maxcollection)
1381 return -1;
1382 }
1383
1384 report_features(hid);
1385
1386 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1387 if (k == HID_OUTPUT_REPORT &&
1388 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1389 continue;
1390
1391 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1392
1393 if (!report->maxfield)
1394 continue;
1395
1396 if (!hidinput) {
1397 hidinput = hidinput_allocate(hid);
1398 if (!hidinput)
1399 goto out_unwind;
1400 }
1401
1402 for (i = 0; i < report->maxfield; i++)
1403 for (j = 0; j < report->field[i]->maxusage; j++)
1404 hidinput_configure_usage(hidinput, report->field[i],
1405 report->field[i]->usage + j);
1406
1407 if ((hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1408 !hidinput_has_been_populated(hidinput))
1409 continue;
1410
1411 if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
1412 /* This will leave hidinput NULL, so that it
1413 * allocates another one if we have more inputs on
1414 * the same interface. Some devices (e.g. Happ's
1415 * UGCI) cram a lot of unrelated inputs into the
1416 * same interface. */
1417 hidinput->report = report;
1418 if (drv->input_configured)
1419 drv->input_configured(hid, hidinput);
1420 if (input_register_device(hidinput->input))
1421 goto out_cleanup;
1422 hidinput = NULL;
1423 }
1424 }
1425 }
1426
1427 if (hidinput && (hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1428 !hidinput_has_been_populated(hidinput)) {
1429 /* no need to register an input device not populated */
1430 hidinput_cleanup_hidinput(hid, hidinput);
1431 hidinput = NULL;
1432 }
1433
1434 if (list_empty(&hid->inputs)) {
1435 hid_err(hid, "No inputs registered, leaving\n");
1436 goto out_unwind;
1437 }
1438
1439 if (hidinput) {
1440 if (drv->input_configured)
1441 drv->input_configured(hid, hidinput);
1442 if (input_register_device(hidinput->input))
1443 goto out_cleanup;
1444 }
1445
1446 return 0;
1447
1448 out_cleanup:
1449 list_del(&hidinput->list);
1450 input_free_device(hidinput->input);
1451 kfree(hidinput);
1452 out_unwind:
1453 /* unwind the ones we already registered */
1454 hidinput_disconnect(hid);
1455
1456 return -1;
1457 }
1458 EXPORT_SYMBOL_GPL(hidinput_connect);
1459
1460 void hidinput_disconnect(struct hid_device *hid)
1461 {
1462 struct hid_input *hidinput, *next;
1463
1464 hidinput_cleanup_battery(hid);
1465
1466 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1467 list_del(&hidinput->list);
1468 input_unregister_device(hidinput->input);
1469 kfree(hidinput);
1470 }
1471
1472 /* led_work is spawned by input_dev callbacks, but doesn't access the
1473 * parent input_dev at all. Once all input devices are removed, we
1474 * know that led_work will never get restarted, so we can cancel it
1475 * synchronously and are safe. */
1476 cancel_work_sync(&hid->led_work);
1477 }
1478 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1479
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