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tg3: tg3_disable_ints using uninitialized mailbox value to disable interrupts
[linux/fpc-iii.git] / drivers / hid / hid-input.c
blob4b87bb164f301a81e8830af31da2b8c404b5fb6b
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_2011_ISO),
316 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
317 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
318 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
319 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
320 {}
321 };
322
323 static unsigned find_battery_quirk(struct hid_device *hdev)
324 {
325 unsigned quirks = 0;
326 const struct hid_device_id *match;
327
328 match = hid_match_id(hdev, hid_battery_quirks);
329 if (match != NULL)
330 quirks = match->driver_data;
331
332 return quirks;
333 }
334
335 static int hidinput_get_battery_property(struct power_supply *psy,
336 enum power_supply_property prop,
337 union power_supply_propval *val)
338 {
339 struct hid_device *dev = container_of(psy, struct hid_device, battery);
340 int ret = 0;
341 __u8 *buf;
342
343 switch (prop) {
344 case POWER_SUPPLY_PROP_PRESENT:
345 case POWER_SUPPLY_PROP_ONLINE:
346 val->intval = 1;
347 break;
348
349 case POWER_SUPPLY_PROP_CAPACITY:
350
351 buf = kmalloc(2 * sizeof(__u8), GFP_KERNEL);
352 if (!buf) {
353 ret = -ENOMEM;
354 break;
355 }
356 ret = dev->hid_get_raw_report(dev, dev->battery_report_id,
357 buf, 2,
358 dev->battery_report_type);
359
360 if (ret != 2) {
361 ret = -ENODATA;
362 kfree(buf);
363 break;
364 }
365 ret = 0;
366
367 if (dev->battery_min < dev->battery_max &&
368 buf[1] >= dev->battery_min &&
369 buf[1] <= dev->battery_max)
370 val->intval = (100 * (buf[1] - dev->battery_min)) /
371 (dev->battery_max - dev->battery_min);
372 kfree(buf);
373 break;
374
375 case POWER_SUPPLY_PROP_MODEL_NAME:
376 val->strval = dev->name;
377 break;
378
379 case POWER_SUPPLY_PROP_STATUS:
380 val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
381 break;
382
383 case POWER_SUPPLY_PROP_SCOPE:
384 val->intval = POWER_SUPPLY_SCOPE_DEVICE;
385 break;
386
387 default:
388 ret = -EINVAL;
389 break;
390 }
391
392 return ret;
393 }
394
395 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
396 {
397 struct power_supply *battery = &dev->battery;
398 int ret;
399 unsigned quirks;
400 s32 min, max;
401
402 if (field->usage->hid != HID_DC_BATTERYSTRENGTH)
403 return false; /* no match */
404
405 if (battery->name != NULL)
406 goto out; /* already initialized? */
407
408 battery->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq);
409 if (battery->name == NULL)
410 goto out;
411
412 battery->type = POWER_SUPPLY_TYPE_BATTERY;
413 battery->properties = hidinput_battery_props;
414 battery->num_properties = ARRAY_SIZE(hidinput_battery_props);
415 battery->use_for_apm = 0;
416 battery->get_property = hidinput_get_battery_property;
417
418 quirks = find_battery_quirk(dev);
419
420 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
421 dev->bus, dev->vendor, dev->product, dev->version, quirks);
422
423 min = field->logical_minimum;
424 max = field->logical_maximum;
425
426 if (quirks & HID_BATTERY_QUIRK_PERCENT) {
427 min = 0;
428 max = 100;
429 }
430
431 if (quirks & HID_BATTERY_QUIRK_FEATURE)
432 report_type = HID_FEATURE_REPORT;
433
434 dev->battery_min = min;
435 dev->battery_max = max;
436 dev->battery_report_type = report_type;
437 dev->battery_report_id = field->report->id;
438
439 ret = power_supply_register(&dev->dev, battery);
440 if (ret != 0) {
441 hid_warn(dev, "can't register power supply: %d\n", ret);
442 kfree(battery->name);
443 battery->name = NULL;
444 }
445
446 power_supply_powers(battery, &dev->dev);
447
448 out:
449 return true;
450 }
451
452 static void hidinput_cleanup_battery(struct hid_device *dev)
453 {
454 if (!dev->battery.name)
455 return;
456
457 power_supply_unregister(&dev->battery);
458 kfree(dev->battery.name);
459 dev->battery.name = NULL;
460 }
461 #else /* !CONFIG_HID_BATTERY_STRENGTH */
462 static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
463 struct hid_field *field)
464 {
465 return false;
466 }
467
468 static void hidinput_cleanup_battery(struct hid_device *dev)
469 {
470 }
471 #endif /* CONFIG_HID_BATTERY_STRENGTH */
472
473 static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
474 struct hid_usage *usage)
475 {
476 struct input_dev *input = hidinput->input;
477 struct hid_device *device = input_get_drvdata(input);
478 int max = 0, code;
479 unsigned long *bit = NULL;
480
481 field->hidinput = hidinput;
482
483 if (field->flags & HID_MAIN_ITEM_CONSTANT)
484 goto ignore;
485
486 /* Ignore if report count is out of bounds. */
487 if (field->report_count < 1)
488 goto ignore;
489
490 /* only LED usages are supported in output fields */
491 if (field->report_type == HID_OUTPUT_REPORT &&
492 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
493 goto ignore;
494 }
495
496 if (device->driver->input_mapping) {
497 int ret = device->driver->input_mapping(device, hidinput, field,
498 usage, &bit, &max);
499 if (ret > 0)
500 goto mapped;
501 if (ret < 0)
502 goto ignore;
503 }
504
505 switch (usage->hid & HID_USAGE_PAGE) {
506 case HID_UP_UNDEFINED:
507 goto ignore;
508
509 case HID_UP_KEYBOARD:
510 set_bit(EV_REP, input->evbit);
511
512 if ((usage->hid & HID_USAGE) < 256) {
513 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
514 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
515 } else
516 map_key(KEY_UNKNOWN);
517
518 break;
519
520 case HID_UP_BUTTON:
521 code = ((usage->hid - 1) & HID_USAGE);
522
523 switch (field->application) {
524 case HID_GD_MOUSE:
525 case HID_GD_POINTER: code += BTN_MOUSE; break;
526 case HID_GD_JOYSTICK:
527 if (code <= 0xf)
528 code += BTN_JOYSTICK;
529 else
530 code += BTN_TRIGGER_HAPPY - 0x10;
531 break;
532 case HID_GD_GAMEPAD:
533 if (code <= 0xf)
534 code += BTN_GAMEPAD;
535 else
536 code += BTN_TRIGGER_HAPPY - 0x10;
537 break;
538 default:
539 switch (field->physical) {
540 case HID_GD_MOUSE:
541 case HID_GD_POINTER: code += BTN_MOUSE; break;
542 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
543 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;
544 default: code += BTN_MISC;
545 }
546 }
547
548 map_key(code);
549 break;
550
551 case HID_UP_SIMULATION:
552 switch (usage->hid & 0xffff) {
553 case 0xba: map_abs(ABS_RUDDER); break;
554 case 0xbb: map_abs(ABS_THROTTLE); break;
555 case 0xc4: map_abs(ABS_GAS); break;
556 case 0xc5: map_abs(ABS_BRAKE); break;
557 case 0xc8: map_abs(ABS_WHEEL); break;
558 default: goto ignore;
559 }
560 break;
561
562 case HID_UP_GENDESK:
563 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
564 switch (usage->hid & 0xf) {
565 case 0x1: map_key_clear(KEY_POWER); break;
566 case 0x2: map_key_clear(KEY_SLEEP); break;
567 case 0x3: map_key_clear(KEY_WAKEUP); break;
568 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
569 case 0x5: map_key_clear(KEY_MENU); break;
570 case 0x6: map_key_clear(KEY_PROG1); break;
571 case 0x7: map_key_clear(KEY_HELP); break;
572 case 0x8: map_key_clear(KEY_EXIT); break;
573 case 0x9: map_key_clear(KEY_SELECT); break;
574 case 0xa: map_key_clear(KEY_RIGHT); break;
575 case 0xb: map_key_clear(KEY_LEFT); break;
576 case 0xc: map_key_clear(KEY_UP); break;
577 case 0xd: map_key_clear(KEY_DOWN); break;
578 case 0xe: map_key_clear(KEY_POWER2); break;
579 case 0xf: map_key_clear(KEY_RESTART); break;
580 default: goto unknown;
581 }
582 break;
583 }
584
585 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
586 switch (usage->hid) {
587 case HID_GD_UP: usage->hat_dir = 1; break;
588 case HID_GD_DOWN: usage->hat_dir = 5; break;
589 case HID_GD_RIGHT: usage->hat_dir = 3; break;
590 case HID_GD_LEFT: usage->hat_dir = 7; break;
591 default: goto unknown;
592 }
593 if (field->dpad) {
594 map_abs(field->dpad);
595 goto ignore;
596 }
597 map_abs(ABS_HAT0X);
598 break;
599 }
600
601 switch (usage->hid) {
602 /* These usage IDs map directly to the usage codes. */
603 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
604 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
605 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
606 if (field->flags & HID_MAIN_ITEM_RELATIVE)
607 map_rel(usage->hid & 0xf);
608 else
609 map_abs(usage->hid & 0xf);
610 break;
611
612 case HID_GD_HATSWITCH:
613 usage->hat_min = field->logical_minimum;
614 usage->hat_max = field->logical_maximum;
615 map_abs(ABS_HAT0X);
616 break;
617
618 case HID_GD_START: map_key_clear(BTN_START); break;
619 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
620
621 default: goto unknown;
622 }
623
624 break;
625
626 case HID_UP_LED:
627 switch (usage->hid & 0xffff) { /* HID-Value: */
628 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */
629 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */
630 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */
631 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */
632 case 0x05: map_led (LED_KANA); break; /* "Kana" */
633 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */
634 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */
635 case 0x09: map_led (LED_MUTE); break; /* "Mute" */
636 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */
637 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */
638 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */
639
640 default: goto ignore;
641 }
642 break;
643
644 case HID_UP_DIGITIZER:
645 switch (usage->hid & 0xff) {
646 case 0x00: /* Undefined */
647 goto ignore;
648
649 case 0x30: /* TipPressure */
650 if (!test_bit(BTN_TOUCH, input->keybit)) {
651 device->quirks |= HID_QUIRK_NOTOUCH;
652 set_bit(EV_KEY, input->evbit);
653 set_bit(BTN_TOUCH, input->keybit);
654 }
655 map_abs_clear(ABS_PRESSURE);
656 break;
657
658 case 0x32: /* InRange */
659 switch (field->physical & 0xff) {
660 case 0x21: map_key(BTN_TOOL_MOUSE); break;
661 case 0x22: map_key(BTN_TOOL_FINGER); break;
662 default: map_key(BTN_TOOL_PEN); break;
663 }
664 break;
665
666 case 0x3c: /* Invert */
667 map_key_clear(BTN_TOOL_RUBBER);
668 break;
669
670 case 0x3d: /* X Tilt */
671 map_abs_clear(ABS_TILT_X);
672 break;
673
674 case 0x3e: /* Y Tilt */
675 map_abs_clear(ABS_TILT_Y);
676 break;
677
678 case 0x33: /* Touch */
679 case 0x42: /* TipSwitch */
680 case 0x43: /* TipSwitch2 */
681 device->quirks &= ~HID_QUIRK_NOTOUCH;
682 map_key_clear(BTN_TOUCH);
683 break;
684
685 case 0x44: /* BarrelSwitch */
686 map_key_clear(BTN_STYLUS);
687 break;
688
689 case 0x46: /* TabletPick */
690 map_key_clear(BTN_STYLUS2);
691 break;
692
693 default: goto unknown;
694 }
695 break;
696
697 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */
698 switch (usage->hid & HID_USAGE) {
699 case 0x000: goto ignore;
700 case 0x030: map_key_clear(KEY_POWER); break;
701 case 0x031: map_key_clear(KEY_RESTART); break;
702 case 0x032: map_key_clear(KEY_SLEEP); break;
703 case 0x034: map_key_clear(KEY_SLEEP); break;
704 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;
705 case 0x036: map_key_clear(BTN_MISC); break;
706
707 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */
708 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */
709 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */
710 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */
711 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */
712 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */
713 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */
714 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */
715 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */
716
717 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */
718 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */
719 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */
720 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */
721 case 0x069: map_key_clear(KEY_RED); break;
722 case 0x06a: map_key_clear(KEY_GREEN); break;
723 case 0x06b: map_key_clear(KEY_BLUE); break;
724 case 0x06c: map_key_clear(KEY_YELLOW); break;
725 case 0x06d: map_key_clear(KEY_ZOOM); break;
726
727 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;
728 case 0x083: map_key_clear(KEY_LAST); break;
729 case 0x084: map_key_clear(KEY_ENTER); break;
730 case 0x088: map_key_clear(KEY_PC); break;
731 case 0x089: map_key_clear(KEY_TV); break;
732 case 0x08a: map_key_clear(KEY_WWW); break;
733 case 0x08b: map_key_clear(KEY_DVD); break;
734 case 0x08c: map_key_clear(KEY_PHONE); break;
735 case 0x08d: map_key_clear(KEY_PROGRAM); break;
736 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;
737 case 0x08f: map_key_clear(KEY_GAMES); break;
738 case 0x090: map_key_clear(KEY_MEMO); break;
739 case 0x091: map_key_clear(KEY_CD); break;
740 case 0x092: map_key_clear(KEY_VCR); break;
741 case 0x093: map_key_clear(KEY_TUNER); break;
742 case 0x094: map_key_clear(KEY_EXIT); break;
743 case 0x095: map_key_clear(KEY_HELP); break;
744 case 0x096: map_key_clear(KEY_TAPE); break;
745 case 0x097: map_key_clear(KEY_TV2); break;
746 case 0x098: map_key_clear(KEY_SAT); break;
747 case 0x09a: map_key_clear(KEY_PVR); break;
748
749 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
750 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
751 case 0x0a0: map_key_clear(KEY_VCR2); break;
752
753 case 0x0b0: map_key_clear(KEY_PLAY); break;
754 case 0x0b1: map_key_clear(KEY_PAUSE); break;
755 case 0x0b2: map_key_clear(KEY_RECORD); break;
756 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
757 case 0x0b4: map_key_clear(KEY_REWIND); break;
758 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
759 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
760 case 0x0b7: map_key_clear(KEY_STOPCD); break;
761 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
762 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;
763 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;
764 case 0x0bf: map_key_clear(KEY_SLOW); break;
765
766 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
767 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
768 case 0x0e2: map_key_clear(KEY_MUTE); break;
769 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
770 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
771 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
772 case 0x0f5: map_key_clear(KEY_SLOW); break;
773
774 case 0x182: map_key_clear(KEY_BOOKMARKS); break;
775 case 0x183: map_key_clear(KEY_CONFIG); break;
776 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;
777 case 0x185: map_key_clear(KEY_EDITOR); break;
778 case 0x186: map_key_clear(KEY_SPREADSHEET); break;
779 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;
780 case 0x188: map_key_clear(KEY_PRESENTATION); break;
781 case 0x189: map_key_clear(KEY_DATABASE); break;
782 case 0x18a: map_key_clear(KEY_MAIL); break;
783 case 0x18b: map_key_clear(KEY_NEWS); break;
784 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;
785 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;
786 case 0x18e: map_key_clear(KEY_CALENDAR); break;
787 case 0x191: map_key_clear(KEY_FINANCE); break;
788 case 0x192: map_key_clear(KEY_CALC); break;
789 case 0x193: map_key_clear(KEY_PLAYER); break;
790 case 0x194: map_key_clear(KEY_FILE); break;
791 case 0x196: map_key_clear(KEY_WWW); break;
792 case 0x199: map_key_clear(KEY_CHAT); break;
793 case 0x19c: map_key_clear(KEY_LOGOFF); break;
794 case 0x19e: map_key_clear(KEY_COFFEE); break;
795 case 0x1a6: map_key_clear(KEY_HELP); break;
796 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
797 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;
798 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;
799 case 0x1b6: map_key_clear(KEY_IMAGES); break;
800 case 0x1b7: map_key_clear(KEY_AUDIO); break;
801 case 0x1b8: map_key_clear(KEY_VIDEO); break;
802 case 0x1bc: map_key_clear(KEY_MESSENGER); break;
803 case 0x1bd: map_key_clear(KEY_INFO); break;
804 case 0x201: map_key_clear(KEY_NEW); break;
805 case 0x202: map_key_clear(KEY_OPEN); break;
806 case 0x203: map_key_clear(KEY_CLOSE); break;
807 case 0x204: map_key_clear(KEY_EXIT); break;
808 case 0x207: map_key_clear(KEY_SAVE); break;
809 case 0x208: map_key_clear(KEY_PRINT); break;
810 case 0x209: map_key_clear(KEY_PROPS); break;
811 case 0x21a: map_key_clear(KEY_UNDO); break;
812 case 0x21b: map_key_clear(KEY_COPY); break;
813 case 0x21c: map_key_clear(KEY_CUT); break;
814 case 0x21d: map_key_clear(KEY_PASTE); break;
815 case 0x21f: map_key_clear(KEY_FIND); break;
816 case 0x221: map_key_clear(KEY_SEARCH); break;
817 case 0x222: map_key_clear(KEY_GOTO); break;
818 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
819 case 0x224: map_key_clear(KEY_BACK); break;
820 case 0x225: map_key_clear(KEY_FORWARD); break;
821 case 0x226: map_key_clear(KEY_STOP); break;
822 case 0x227: map_key_clear(KEY_REFRESH); break;
823 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
824 case 0x22d: map_key_clear(KEY_ZOOMIN); break;
825 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;
826 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;
827 case 0x233: map_key_clear(KEY_SCROLLUP); break;
828 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
829 case 0x238: map_rel(REL_HWHEEL); break;
830 case 0x23d: map_key_clear(KEY_EDIT); break;
831 case 0x25f: map_key_clear(KEY_CANCEL); break;
832 case 0x269: map_key_clear(KEY_INSERT); break;
833 case 0x26a: map_key_clear(KEY_DELETE); break;
834 case 0x279: map_key_clear(KEY_REDO); break;
835
836 case 0x289: map_key_clear(KEY_REPLY); break;
837 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
838 case 0x28c: map_key_clear(KEY_SEND); break;
839
840 default: goto ignore;
841 }
842 break;
843
844 case HID_UP_GENDEVCTRLS:
845 if (hidinput_setup_battery(device, HID_INPUT_REPORT, field))
846 goto ignore;
847 else
848 goto unknown;
849 break;
850
851 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
852 set_bit(EV_REP, input->evbit);
853 switch (usage->hid & HID_USAGE) {
854 case 0x021: map_key_clear(KEY_PRINT); break;
855 case 0x070: map_key_clear(KEY_HP); break;
856 case 0x071: map_key_clear(KEY_CAMERA); break;
857 case 0x072: map_key_clear(KEY_SOUND); break;
858 case 0x073: map_key_clear(KEY_QUESTION); break;
859 case 0x080: map_key_clear(KEY_EMAIL); break;
860 case 0x081: map_key_clear(KEY_CHAT); break;
861 case 0x082: map_key_clear(KEY_SEARCH); break;
862 case 0x083: map_key_clear(KEY_CONNECT); break;
863 case 0x084: map_key_clear(KEY_FINANCE); break;
864 case 0x085: map_key_clear(KEY_SPORT); break;
865 case 0x086: map_key_clear(KEY_SHOP); break;
866 default: goto ignore;
867 }
868 break;
869
870 case HID_UP_HPVENDOR2:
871 set_bit(EV_REP, input->evbit);
872 switch (usage->hid & HID_USAGE) {
873 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;
874 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;
875 default: goto ignore;
876 }
877 break;
878
879 case HID_UP_MSVENDOR:
880 goto ignore;
881
882 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
883 set_bit(EV_REP, input->evbit);
884 goto ignore;
885
886 case HID_UP_LOGIVENDOR:
887 goto ignore;
888
889 case HID_UP_PID:
890 switch (usage->hid & HID_USAGE) {
891 case 0xa4: map_key_clear(BTN_DEAD); break;
892 default: goto ignore;
893 }
894 break;
895
896 default:
897 unknown:
898 if (field->report_size == 1) {
899 if (field->report->type == HID_OUTPUT_REPORT) {
900 map_led(LED_MISC);
901 break;
902 }
903 map_key(BTN_MISC);
904 break;
905 }
906 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
907 map_rel(REL_MISC);
908 break;
909 }
910 map_abs(ABS_MISC);
911 break;
912 }
913
914 mapped:
915 if (device->driver->input_mapped && device->driver->input_mapped(device,
916 hidinput, field, usage, &bit, &max) < 0)
917 goto ignore;
918
919 set_bit(usage->type, input->evbit);
920
921 while (usage->code <= max && test_and_set_bit(usage->code, bit))
922 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
923
924 if (usage->code > max)
925 goto ignore;
926
927
928 if (usage->type == EV_ABS) {
929
930 int a = field->logical_minimum;
931 int b = field->logical_maximum;
932
933 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
934 a = field->logical_minimum = 0;
935 b = field->logical_maximum = 255;
936 }
937
938 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
939 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
940 else input_set_abs_params(input, usage->code, a, b, 0, 0);
941
942 input_abs_set_res(input, usage->code,
943 hidinput_calc_abs_res(field, usage->code));
944
945 /* use a larger default input buffer for MT devices */
946 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
947 input_set_events_per_packet(input, 60);
948 }
949
950 if (usage->type == EV_ABS &&
951 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
952 int i;
953 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
954 input_set_abs_params(input, i, -1, 1, 0, 0);
955 set_bit(i, input->absbit);
956 }
957 if (usage->hat_dir && !field->dpad)
958 field->dpad = usage->code;
959 }
960
961 /* for those devices which produce Consumer volume usage as relative,
962 * we emulate pressing volumeup/volumedown appropriate number of times
963 * in hidinput_hid_event()
964 */
965 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
966 (usage->code == ABS_VOLUME)) {
967 set_bit(KEY_VOLUMEUP, input->keybit);
968 set_bit(KEY_VOLUMEDOWN, input->keybit);
969 }
970
971 if (usage->type == EV_KEY) {
972 set_bit(EV_MSC, input->evbit);
973 set_bit(MSC_SCAN, input->mscbit);
974 }
975
976 ignore:
977 return;
978
979 }
980
981 void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
982 {
983 struct input_dev *input;
984 unsigned *quirks = &hid->quirks;
985
986 if (!field->hidinput)
987 return;
988
989 input = field->hidinput->input;
990
991 if (!usage->type)
992 return;
993
994 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
995 int hat_dir = usage->hat_dir;
996 if (!hat_dir)
997 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
998 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
999 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
1000 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
1001 return;
1002 }
1003
1004 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
1005 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
1006 return;
1007 }
1008
1009 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
1010 if (value) {
1011 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
1012 return;
1013 }
1014 input_event(input, usage->type, usage->code, 0);
1015 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
1016 return;
1017 }
1018
1019 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
1020 int a = field->logical_minimum;
1021 int b = field->logical_maximum;
1022 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
1023 }
1024
1025 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
1026 dbg_hid("Maximum Effects - %d\n",value);
1027 return;
1028 }
1029
1030 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
1031 dbg_hid("PID Pool Report\n");
1032 return;
1033 }
1034
1035 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1036 return;
1037
1038 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1039 (usage->code == ABS_VOLUME)) {
1040 int count = abs(value);
1041 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1042 int i;
1043
1044 for (i = 0; i < count; i++) {
1045 input_event(input, EV_KEY, direction, 1);
1046 input_sync(input);
1047 input_event(input, EV_KEY, direction, 0);
1048 input_sync(input);
1049 }
1050 return;
1051 }
1052
1053 /*
1054 * Ignore out-of-range values as per HID specification,
1055 * section 5.10 and 6.2.25.
1056 *
1057 * The logical_minimum < logical_maximum check is done so that we
1058 * don't unintentionally discard values sent by devices which
1059 * don't specify logical min and max.
1060 */
1061 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1062 (field->logical_minimum < field->logical_maximum) &&
1063 (value < field->logical_minimum ||
1064 value > field->logical_maximum)) {
1065 dbg_hid("Ignoring out-of-range value %x\n", value);
1066 return;
1067 }
1068
1069 /* report the usage code as scancode if the key status has changed */
1070 if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
1071 input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1072
1073 input_event(input, usage->type, usage->code, value);
1074
1075 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
1076 input_event(input, usage->type, usage->code, 0);
1077 }
1078
1079 void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1080 {
1081 struct hid_input *hidinput;
1082
1083 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1084 return;
1085
1086 list_for_each_entry(hidinput, &hid->inputs, list)
1087 input_sync(hidinput->input);
1088 }
1089 EXPORT_SYMBOL_GPL(hidinput_report_event);
1090
1091 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1092 {
1093 struct hid_report *report;
1094 int i, j;
1095
1096 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1097 for (i = 0; i < report->maxfield; i++) {
1098 *field = report->field[i];
1099 for (j = 0; j < (*field)->maxusage; j++)
1100 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1101 return j;
1102 }
1103 }
1104 return -1;
1105 }
1106 EXPORT_SYMBOL_GPL(hidinput_find_field);
1107
1108 struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1109 {
1110 struct hid_report *report;
1111 struct hid_field *field;
1112 int i, j;
1113
1114 list_for_each_entry(report,
1115 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1116 list) {
1117 for (i = 0; i < report->maxfield; i++) {
1118 field = report->field[i];
1119 for (j = 0; j < field->maxusage; j++)
1120 if (field->usage[j].type == EV_LED)
1121 return field;
1122 }
1123 }
1124 return NULL;
1125 }
1126 EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1127
1128 unsigned int hidinput_count_leds(struct hid_device *hid)
1129 {
1130 struct hid_report *report;
1131 struct hid_field *field;
1132 int i, j;
1133 unsigned int count = 0;
1134
1135 list_for_each_entry(report,
1136 &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1137 list) {
1138 for (i = 0; i < report->maxfield; i++) {
1139 field = report->field[i];
1140 for (j = 0; j < field->maxusage; j++)
1141 if (field->usage[j].type == EV_LED &&
1142 field->value[j])
1143 count += 1;
1144 }
1145 }
1146 return count;
1147 }
1148 EXPORT_SYMBOL_GPL(hidinput_count_leds);
1149
1150 static void hidinput_led_worker(struct work_struct *work)
1151 {
1152 struct hid_device *hid = container_of(work, struct hid_device,
1153 led_work);
1154 struct hid_field *field;
1155 struct hid_report *report;
1156 int len;
1157 __u8 *buf;
1158
1159 field = hidinput_get_led_field(hid);
1160 if (!field)
1161 return;
1162
1163 /*
1164 * field->report is accessed unlocked regarding HID core. So there might
1165 * be another incoming SET-LED request from user-space, which changes
1166 * the LED state while we assemble our outgoing buffer. However, this
1167 * doesn't matter as hid_output_report() correctly converts it into a
1168 * boolean value no matter what information is currently set on the LED
1169 * field (even garbage). So the remote device will always get a valid
1170 * request.
1171 * And in case we send a wrong value, a next led worker is spawned
1172 * for every SET-LED request so the following worker will send the
1173 * correct value, guaranteed!
1174 */
1175
1176 report = field->report;
1177
1178 /* use custom SET_REPORT request if possible (asynchronous) */
1179 if (hid->ll_driver->request)
1180 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);
1181
1182 /* fall back to generic raw-output-report */
1183 len = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1184 buf = hid_alloc_report_buf(report, GFP_KERNEL);
1185 if (!buf)
1186 return;
1187
1188 hid_output_report(report, buf);
1189 /* synchronous output report */
1190 hid->hid_output_raw_report(hid, buf, len, HID_OUTPUT_REPORT);
1191 kfree(buf);
1192 }
1193
1194 static int hidinput_input_event(struct input_dev *dev, unsigned int type,
1195 unsigned int code, int value)
1196 {
1197 struct hid_device *hid = input_get_drvdata(dev);
1198 struct hid_field *field;
1199 int offset;
1200
1201 if (type == EV_FF)
1202 return input_ff_event(dev, type, code, value);
1203
1204 if (type != EV_LED)
1205 return -1;
1206
1207 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
1208 hid_warn(dev, "event field not found\n");
1209 return -1;
1210 }
1211
1212 hid_set_field(field, offset, value);
1213
1214 schedule_work(&hid->led_work);
1215 return 0;
1216 }
1217
1218 static int hidinput_open(struct input_dev *dev)
1219 {
1220 struct hid_device *hid = input_get_drvdata(dev);
1221
1222 return hid_hw_open(hid);
1223 }
1224
1225 static void hidinput_close(struct input_dev *dev)
1226 {
1227 struct hid_device *hid = input_get_drvdata(dev);
1228
1229 hid_hw_close(hid);
1230 }
1231
1232 static void report_features(struct hid_device *hid)
1233 {
1234 struct hid_driver *drv = hid->driver;
1235 struct hid_report_enum *rep_enum;
1236 struct hid_report *rep;
1237 int i, j;
1238
1239 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1240 list_for_each_entry(rep, &rep_enum->report_list, list)
1241 for (i = 0; i < rep->maxfield; i++) {
1242 /* Ignore if report count is out of bounds. */
1243 if (rep->field[i]->report_count < 1)
1244 continue;
1245
1246 for (j = 0; j < rep->field[i]->maxusage; j++) {
1247 /* Verify if Battery Strength feature is available */
1248 hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);
1249
1250 if (drv->feature_mapping)
1251 drv->feature_mapping(hid, rep->field[i],
1252 rep->field[i]->usage + j);
1253 }
1254 }
1255 }
1256
1257 static struct hid_input *hidinput_allocate(struct hid_device *hid)
1258 {
1259 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1260 struct input_dev *input_dev = input_allocate_device();
1261 if (!hidinput || !input_dev) {
1262 kfree(hidinput);
1263 input_free_device(input_dev);
1264 hid_err(hid, "Out of memory during hid input probe\n");
1265 return NULL;
1266 }
1267
1268 input_set_drvdata(input_dev, hid);
1269 if (hid->ll_driver->hidinput_input_event)
1270 input_dev->event = hid->ll_driver->hidinput_input_event;
1271 else if (hid->ll_driver->request || hid->hid_output_raw_report)
1272 input_dev->event = hidinput_input_event;
1273 input_dev->open = hidinput_open;
1274 input_dev->close = hidinput_close;
1275 input_dev->setkeycode = hidinput_setkeycode;
1276 input_dev->getkeycode = hidinput_getkeycode;
1277
1278 input_dev->name = hid->name;
1279 input_dev->phys = hid->phys;
1280 input_dev->uniq = hid->uniq;
1281 input_dev->id.bustype = hid->bus;
1282 input_dev->id.vendor = hid->vendor;
1283 input_dev->id.product = hid->product;
1284 input_dev->id.version = hid->version;
1285 input_dev->dev.parent = &hid->dev;
1286 hidinput->input = input_dev;
1287 list_add_tail(&hidinput->list, &hid->inputs);
1288
1289 return hidinput;
1290 }
1291
1292 static bool hidinput_has_been_populated(struct hid_input *hidinput)
1293 {
1294 int i;
1295 unsigned long r = 0;
1296
1297 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
1298 r |= hidinput->input->evbit[i];
1299
1300 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
1301 r |= hidinput->input->keybit[i];
1302
1303 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
1304 r |= hidinput->input->relbit[i];
1305
1306 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
1307 r |= hidinput->input->absbit[i];
1308
1309 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
1310 r |= hidinput->input->mscbit[i];
1311
1312 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
1313 r |= hidinput->input->ledbit[i];
1314
1315 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
1316 r |= hidinput->input->sndbit[i];
1317
1318 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
1319 r |= hidinput->input->ffbit[i];
1320
1321 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
1322 r |= hidinput->input->swbit[i];
1323
1324 return !!r;
1325 }
1326
1327 static void hidinput_cleanup_hidinput(struct hid_device *hid,
1328 struct hid_input *hidinput)
1329 {
1330 struct hid_report *report;
1331 int i, k;
1332
1333 list_del(&hidinput->list);
1334 input_free_device(hidinput->input);
1335
1336 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1337 if (k == HID_OUTPUT_REPORT &&
1338 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1339 continue;
1340
1341 list_for_each_entry(report, &hid->report_enum[k].report_list,
1342 list) {
1343
1344 for (i = 0; i < report->maxfield; i++)
1345 if (report->field[i]->hidinput == hidinput)
1346 report->field[i]->hidinput = NULL;
1347 }
1348 }
1349
1350 kfree(hidinput);
1351 }
1352
1353 /*
1354 * Register the input device; print a message.
1355 * Configure the input layer interface
1356 * Read all reports and initialize the absolute field values.
1357 */
1358
1359 int hidinput_connect(struct hid_device *hid, unsigned int force)
1360 {
1361 struct hid_driver *drv = hid->driver;
1362 struct hid_report *report;
1363 struct hid_input *hidinput = NULL;
1364 int i, j, k;
1365
1366 INIT_LIST_HEAD(&hid->inputs);
1367 INIT_WORK(&hid->led_work, hidinput_led_worker);
1368
1369 if (!force) {
1370 for (i = 0; i < hid->maxcollection; i++) {
1371 struct hid_collection *col = &hid->collection[i];
1372 if (col->type == HID_COLLECTION_APPLICATION ||
1373 col->type == HID_COLLECTION_PHYSICAL)
1374 if (IS_INPUT_APPLICATION(col->usage))
1375 break;
1376 }
1377
1378 if (i == hid->maxcollection)
1379 return -1;
1380 }
1381
1382 report_features(hid);
1383
1384 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1385 if (k == HID_OUTPUT_REPORT &&
1386 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1387 continue;
1388
1389 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1390
1391 if (!report->maxfield)
1392 continue;
1393
1394 if (!hidinput) {
1395 hidinput = hidinput_allocate(hid);
1396 if (!hidinput)
1397 goto out_unwind;
1398 }
1399
1400 for (i = 0; i < report->maxfield; i++)
1401 for (j = 0; j < report->field[i]->maxusage; j++)
1402 hidinput_configure_usage(hidinput, report->field[i],
1403 report->field[i]->usage + j);
1404
1405 if ((hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1406 !hidinput_has_been_populated(hidinput))
1407 continue;
1408
1409 if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
1410 /* This will leave hidinput NULL, so that it
1411 * allocates another one if we have more inputs on
1412 * the same interface. Some devices (e.g. Happ's
1413 * UGCI) cram a lot of unrelated inputs into the
1414 * same interface. */
1415 hidinput->report = report;
1416 if (drv->input_configured)
1417 drv->input_configured(hid, hidinput);
1418 if (input_register_device(hidinput->input))
1419 goto out_cleanup;
1420 hidinput = NULL;
1421 }
1422 }
1423 }
1424
1425 if (hidinput && (hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
1426 !hidinput_has_been_populated(hidinput)) {
1427 /* no need to register an input device not populated */
1428 hidinput_cleanup_hidinput(hid, hidinput);
1429 hidinput = NULL;
1430 }
1431
1432 if (list_empty(&hid->inputs)) {
1433 hid_err(hid, "No inputs registered, leaving\n");
1434 goto out_unwind;
1435 }
1436
1437 if (hidinput) {
1438 if (drv->input_configured)
1439 drv->input_configured(hid, hidinput);
1440 if (input_register_device(hidinput->input))
1441 goto out_cleanup;
1442 }
1443
1444 return 0;
1445
1446 out_cleanup:
1447 list_del(&hidinput->list);
1448 input_free_device(hidinput->input);
1449 kfree(hidinput);
1450 out_unwind:
1451 /* unwind the ones we already registered */
1452 hidinput_disconnect(hid);
1453
1454 return -1;
1455 }
1456 EXPORT_SYMBOL_GPL(hidinput_connect);
1457
1458 void hidinput_disconnect(struct hid_device *hid)
1459 {
1460 struct hid_input *hidinput, *next;
1461
1462 hidinput_cleanup_battery(hid);
1463
1464 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1465 list_del(&hidinput->list);
1466 input_unregister_device(hidinput->input);
1467 kfree(hidinput);
1468 }
1469
1470 /* led_work is spawned by input_dev callbacks, but doesn't access the
1471 * parent input_dev at all. Once all input devices are removed, we
1472 * know that led_work will never get restarted, so we can cancel it
1473 * synchronously and are safe. */
1474 cancel_work_sync(&hid->led_work);
1475 }
1476 EXPORT_SYMBOL_GPL(hidinput_disconnect);
1477
Linux with added FPC-III support