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authorJiri Kosina <jkosina@suse.cz>2006-12-08 12:40:44 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2006-12-08 13:43:01 -0500
commitdde5845a529ff753364a6d1aea61180946270bfa (patch)
treee0160fe45c047024b281a2805196a8c64242b59e /drivers/hid
parent64bb67b1702958759f650adb64ab33496641e526 (diff)
[PATCH] Generic HID layer - code split
The "big main" split of USB HID code into generic HID code and USB-transport specific HID handling. Signed-off-by: Jiri Kosina <jkosina@suse.cz> Signed-off-by: Marcel Holtmann <marcel@holtmann.org> Cc: Dmitry Torokhov <dmitry.torokhov@gmail.com> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/hid')
-rw-r--r--drivers/hid/hid-core.c940
-rw-r--r--drivers/hid/hid-input.c840
2 files changed, 1780 insertions, 0 deletions
diff --git a/drivers/hid/hid-core.c b/drivers/hid/hid-core.c
new file mode 100644
index 000000000000..689ae16adf33
--- /dev/null
+++ b/drivers/hid/hid-core.c
@@ -0,0 +1,940 @@
1/*
2 * USB HID support for Linux
3 *
4 * Copyright (c) 1999 Andreas Gal
5 * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
6 * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
7 * Copyright (c) 2006 Jiri Kosina
8 */
9
10/*
11 * This program is free software; you can redistribute it and/or modify it
12 * under the terms of the GNU General Public License as published by the Free
13 * Software Foundation; either version 2 of the License, or (at your option)
14 * any later version.
15 */
16
17#include <linux/module.h>
18#include <linux/slab.h>
19#include <linux/init.h>
20#include <linux/kernel.h>
21#include <linux/sched.h>
22#include <linux/list.h>
23#include <linux/mm.h>
24#include <linux/smp_lock.h>
25#include <linux/spinlock.h>
26#include <asm/unaligned.h>
27#include <asm/byteorder.h>
28#include <linux/input.h>
29#include <linux/wait.h>
30
31#undef DEBUG
32#undef DEBUG_DATA
33
34#include <linux/usb.h>
35
36#include <linux/hid.h>
37#include <linux/hiddev.h>
38
39/*
40 * Version Information
41 */
42
43#define DRIVER_VERSION "v2.6"
44#define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik"
45#define DRIVER_DESC "USB HID core driver"
46#define DRIVER_LICENSE "GPL"
47
48/*
49 * Module parameters.
50 */
51
52static unsigned int hid_mousepoll_interval;
53module_param_named(mousepoll, hid_mousepoll_interval, uint, 0644);
54MODULE_PARM_DESC(mousepoll, "Polling interval of mice");
55
56/*
57 * Register a new report for a device.
58 */
59
60static struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
61{
62 struct hid_report_enum *report_enum = device->report_enum + type;
63 struct hid_report *report;
64
65 if (report_enum->report_id_hash[id])
66 return report_enum->report_id_hash[id];
67
68 if (!(report = kzalloc(sizeof(struct hid_report), GFP_KERNEL)))
69 return NULL;
70
71 if (id != 0)
72 report_enum->numbered = 1;
73
74 report->id = id;
75 report->type = type;
76 report->size = 0;
77 report->device = device;
78 report_enum->report_id_hash[id] = report;
79
80 list_add_tail(&report->list, &report_enum->report_list);
81
82 return report;
83}
84
85/*
86 * Register a new field for this report.
87 */
88
89static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
90{
91 struct hid_field *field;
92
93 if (report->maxfield == HID_MAX_FIELDS) {
94 dbg("too many fields in report");
95 return NULL;
96 }
97
98 if (!(field = kzalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
99 + values * sizeof(unsigned), GFP_KERNEL))) return NULL;
100
101 field->index = report->maxfield++;
102 report->field[field->index] = field;
103 field->usage = (struct hid_usage *)(field + 1);
104 field->value = (unsigned *)(field->usage + usages);
105 field->report = report;
106
107 return field;
108}
109
110/*
111 * Open a collection. The type/usage is pushed on the stack.
112 */
113
114static int open_collection(struct hid_parser *parser, unsigned type)
115{
116 struct hid_collection *collection;
117 unsigned usage;
118
119 usage = parser->local.usage[0];
120
121 if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
122 dbg("collection stack overflow");
123 return -1;
124 }
125
126 if (parser->device->maxcollection == parser->device->collection_size) {
127 collection = kmalloc(sizeof(struct hid_collection) *
128 parser->device->collection_size * 2, GFP_KERNEL);
129 if (collection == NULL) {
130 dbg("failed to reallocate collection array");
131 return -1;
132 }
133 memcpy(collection, parser->device->collection,
134 sizeof(struct hid_collection) *
135 parser->device->collection_size);
136 memset(collection + parser->device->collection_size, 0,
137 sizeof(struct hid_collection) *
138 parser->device->collection_size);
139 kfree(parser->device->collection);
140 parser->device->collection = collection;
141 parser->device->collection_size *= 2;
142 }
143
144 parser->collection_stack[parser->collection_stack_ptr++] =
145 parser->device->maxcollection;
146
147 collection = parser->device->collection +
148 parser->device->maxcollection++;
149 collection->type = type;
150 collection->usage = usage;
151 collection->level = parser->collection_stack_ptr - 1;
152
153 if (type == HID_COLLECTION_APPLICATION)
154 parser->device->maxapplication++;
155
156 return 0;
157}
158
159/*
160 * Close a collection.
161 */
162
163static int close_collection(struct hid_parser *parser)
164{
165 if (!parser->collection_stack_ptr) {
166 dbg("collection stack underflow");
167 return -1;
168 }
169 parser->collection_stack_ptr--;
170 return 0;
171}
172
173/*
174 * Climb up the stack, search for the specified collection type
175 * and return the usage.
176 */
177
178static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
179{
180 int n;
181 for (n = parser->collection_stack_ptr - 1; n >= 0; n--)
182 if (parser->device->collection[parser->collection_stack[n]].type == type)
183 return parser->device->collection[parser->collection_stack[n]].usage;
184 return 0; /* we know nothing about this usage type */
185}
186
187/*
188 * Add a usage to the temporary parser table.
189 */
190
191static int hid_add_usage(struct hid_parser *parser, unsigned usage)
192{
193 if (parser->local.usage_index >= HID_MAX_USAGES) {
194 dbg("usage index exceeded");
195 return -1;
196 }
197 parser->local.usage[parser->local.usage_index] = usage;
198 parser->local.collection_index[parser->local.usage_index] =
199 parser->collection_stack_ptr ?
200 parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
201 parser->local.usage_index++;
202 return 0;
203}
204
205/*
206 * Register a new field for this report.
207 */
208
209static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
210{
211 struct hid_report *report;
212 struct hid_field *field;
213 int usages;
214 unsigned offset;
215 int i;
216
217 if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) {
218 dbg("hid_register_report failed");
219 return -1;
220 }
221
222 if (parser->global.logical_maximum < parser->global.logical_minimum) {
223 dbg("logical range invalid %d %d", parser->global.logical_minimum, parser->global.logical_maximum);
224 return -1;
225 }
226
227 offset = report->size;
228 report->size += parser->global.report_size * parser->global.report_count;
229
230 if (!parser->local.usage_index) /* Ignore padding fields */
231 return 0;
232
233 usages = max_t(int, parser->local.usage_index, parser->global.report_count);
234
235 if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL)
236 return 0;
237
238 field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
239 field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
240 field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
241
242 for (i = 0; i < usages; i++) {
243 int j = i;
244 /* Duplicate the last usage we parsed if we have excess values */
245 if (i >= parser->local.usage_index)
246 j = parser->local.usage_index - 1;
247 field->usage[i].hid = parser->local.usage[j];
248 field->usage[i].collection_index =
249 parser->local.collection_index[j];
250 }
251
252 field->maxusage = usages;
253 field->flags = flags;
254 field->report_offset = offset;
255 field->report_type = report_type;
256 field->report_size = parser->global.report_size;
257 field->report_count = parser->global.report_count;
258 field->logical_minimum = parser->global.logical_minimum;
259 field->logical_maximum = parser->global.logical_maximum;
260 field->physical_minimum = parser->global.physical_minimum;
261 field->physical_maximum = parser->global.physical_maximum;
262 field->unit_exponent = parser->global.unit_exponent;
263 field->unit = parser->global.unit;
264
265 return 0;
266}
267
268/*
269 * Read data value from item.
270 */
271
272static u32 item_udata(struct hid_item *item)
273{
274 switch (item->size) {
275 case 1: return item->data.u8;
276 case 2: return item->data.u16;
277 case 4: return item->data.u32;
278 }
279 return 0;
280}
281
282static s32 item_sdata(struct hid_item *item)
283{
284 switch (item->size) {
285 case 1: return item->data.s8;
286 case 2: return item->data.s16;
287 case 4: return item->data.s32;
288 }
289 return 0;
290}
291
292/*
293 * Process a global item.
294 */
295
296static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
297{
298 switch (item->tag) {
299
300 case HID_GLOBAL_ITEM_TAG_PUSH:
301
302 if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
303 dbg("global enviroment stack overflow");
304 return -1;
305 }
306
307 memcpy(parser->global_stack + parser->global_stack_ptr++,
308 &parser->global, sizeof(struct hid_global));
309 return 0;
310
311 case HID_GLOBAL_ITEM_TAG_POP:
312
313 if (!parser->global_stack_ptr) {
314 dbg("global enviroment stack underflow");
315 return -1;
316 }
317
318 memcpy(&parser->global, parser->global_stack + --parser->global_stack_ptr,
319 sizeof(struct hid_global));
320 return 0;
321
322 case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
323 parser->global.usage_page = item_udata(item);
324 return 0;
325
326 case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
327 parser->global.logical_minimum = item_sdata(item);
328 return 0;
329
330 case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
331 if (parser->global.logical_minimum < 0)
332 parser->global.logical_maximum = item_sdata(item);
333 else
334 parser->global.logical_maximum = item_udata(item);
335 return 0;
336
337 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
338 parser->global.physical_minimum = item_sdata(item);
339 return 0;
340
341 case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
342 if (parser->global.physical_minimum < 0)
343 parser->global.physical_maximum = item_sdata(item);
344 else
345 parser->global.physical_maximum = item_udata(item);
346 return 0;
347
348 case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
349 parser->global.unit_exponent = item_sdata(item);
350 return 0;
351
352 case HID_GLOBAL_ITEM_TAG_UNIT:
353 parser->global.unit = item_udata(item);
354 return 0;
355
356 case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
357 if ((parser->global.report_size = item_udata(item)) > 32) {
358 dbg("invalid report_size %d", parser->global.report_size);
359 return -1;
360 }
361 return 0;
362
363 case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
364 if ((parser->global.report_count = item_udata(item)) > HID_MAX_USAGES) {
365 dbg("invalid report_count %d", parser->global.report_count);
366 return -1;
367 }
368 return 0;
369
370 case HID_GLOBAL_ITEM_TAG_REPORT_ID:
371 if ((parser->global.report_id = item_udata(item)) == 0) {
372 dbg("report_id 0 is invalid");
373 return -1;
374 }
375 return 0;
376
377 default:
378 dbg("unknown global tag 0x%x", item->tag);
379 return -1;
380 }
381}
382
383/*
384 * Process a local item.
385 */
386
387static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
388{
389 __u32 data;
390 unsigned n;
391
392 if (item->size == 0) {
393 dbg("item data expected for local item");
394 return -1;
395 }
396
397 data = item_udata(item);
398
399 switch (item->tag) {
400
401 case HID_LOCAL_ITEM_TAG_DELIMITER:
402
403 if (data) {
404 /*
405 * We treat items before the first delimiter
406 * as global to all usage sets (branch 0).
407 * In the moment we process only these global
408 * items and the first delimiter set.
409 */
410 if (parser->local.delimiter_depth != 0) {
411 dbg("nested delimiters");
412 return -1;
413 }
414 parser->local.delimiter_depth++;
415 parser->local.delimiter_branch++;
416 } else {
417 if (parser->local.delimiter_depth < 1) {
418 dbg("bogus close delimiter");
419 return -1;
420 }
421 parser->local.delimiter_depth--;
422 }
423 return 1;
424
425 case HID_LOCAL_ITEM_TAG_USAGE:
426
427 if (parser->local.delimiter_branch > 1) {
428 dbg("alternative usage ignored");
429 return 0;
430 }
431
432 if (item->size <= 2)
433 data = (parser->global.usage_page << 16) + data;
434
435 return hid_add_usage(parser, data);
436
437 case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
438
439 if (parser->local.delimiter_branch > 1) {
440 dbg("alternative usage ignored");
441 return 0;
442 }
443
444 if (item->size <= 2)
445 data = (parser->global.usage_page << 16) + data;
446
447 parser->local.usage_minimum = data;
448 return 0;
449
450 case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
451
452 if (parser->local.delimiter_branch > 1) {
453 dbg("alternative usage ignored");
454 return 0;
455 }
456
457 if (item->size <= 2)
458 data = (parser->global.usage_page << 16) + data;
459
460 for (n = parser->local.usage_minimum; n <= data; n++)
461 if (hid_add_usage(parser, n)) {
462 dbg("hid_add_usage failed\n");
463 return -1;
464 }
465 return 0;
466
467 default:
468
469 dbg("unknown local item tag 0x%x", item->tag);
470 return 0;
471 }
472 return 0;
473}
474
475/*
476 * Process a main item.
477 */
478
479static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
480{
481 __u32 data;
482 int ret;
483
484 data = item_udata(item);
485
486 switch (item->tag) {
487 case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
488 ret = open_collection(parser, data & 0xff);
489 break;
490 case HID_MAIN_ITEM_TAG_END_COLLECTION:
491 ret = close_collection(parser);
492 break;
493 case HID_MAIN_ITEM_TAG_INPUT:
494 ret = hid_add_field(parser, HID_INPUT_REPORT, data);
495 break;
496 case HID_MAIN_ITEM_TAG_OUTPUT:
497 ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
498 break;
499 case HID_MAIN_ITEM_TAG_FEATURE:
500 ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
501 break;
502 default:
503 dbg("unknown main item tag 0x%x", item->tag);
504 ret = 0;
505 }
506
507 memset(&parser->local, 0, sizeof(parser->local)); /* Reset the local parser environment */
508
509 return ret;
510}
511
512/*
513 * Process a reserved item.
514 */
515
516static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
517{
518 dbg("reserved item type, tag 0x%x", item->tag);
519 return 0;
520}
521
522/*
523 * Free a report and all registered fields. The field->usage and
524 * field->value table's are allocated behind the field, so we need
525 * only to free(field) itself.
526 */
527
528static void hid_free_report(struct hid_report *report)
529{
530 unsigned n;
531
532 for (n = 0; n < report->maxfield; n++)
533 kfree(report->field[n]);
534 kfree(report);
535}
536
537/*
538 * Free a device structure, all reports, and all fields.
539 */
540
541static void hid_free_device(struct hid_device *device)
542{
543 unsigned i,j;
544
545 for (i = 0; i < HID_REPORT_TYPES; i++) {
546 struct hid_report_enum *report_enum = device->report_enum + i;
547
548 for (j = 0; j < 256; j++) {
549 struct hid_report *report = report_enum->report_id_hash[j];
550 if (report)
551 hid_free_report(report);
552 }
553 }
554
555 kfree(device->rdesc);
556 kfree(device);
557}
558
559/*
560 * Fetch a report description item from the data stream. We support long
561 * items, though they are not used yet.
562 */
563
564static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
565{
566 u8 b;
567
568 if ((end - start) <= 0)
569 return NULL;
570
571 b = *start++;
572
573 item->type = (b >> 2) & 3;
574 item->tag = (b >> 4) & 15;
575
576 if (item->tag == HID_ITEM_TAG_LONG) {
577
578 item->format = HID_ITEM_FORMAT_LONG;
579
580 if ((end - start) < 2)
581 return NULL;
582
583 item->size = *start++;
584 item->tag = *start++;
585
586 if ((end - start) < item->size)
587 return NULL;
588
589 item->data.longdata = start;
590 start += item->size;
591 return start;
592 }
593
594 item->format = HID_ITEM_FORMAT_SHORT;
595 item->size = b & 3;
596
597 switch (item->size) {
598
599 case 0:
600 return start;
601
602 case 1:
603 if ((end - start) < 1)
604 return NULL;
605 item->data.u8 = *start++;
606 return start;
607
608 case 2:
609 if ((end - start) < 2)
610 return NULL;
611 item->data.u16 = le16_to_cpu(get_unaligned((__le16*)start));
612 start = (__u8 *)((__le16 *)start + 1);
613 return start;
614
615 case 3:
616 item->size++;
617 if ((end - start) < 4)
618 return NULL;
619 item->data.u32 = le32_to_cpu(get_unaligned((__le32*)start));
620 start = (__u8 *)((__le32 *)start + 1);
621 return start;
622 }
623
624 return NULL;
625}
626
627/*
628 * Parse a report description into a hid_device structure. Reports are
629 * enumerated, fields are attached to these reports.
630 */
631
632static struct hid_device *hid_parse_report(__u8 *start, unsigned size)
633{
634 struct hid_device *device;
635 struct hid_parser *parser;
636 struct hid_item item;
637 __u8 *end;
638 unsigned i;
639 static int (*dispatch_type[])(struct hid_parser *parser,
640 struct hid_item *item) = {
641 hid_parser_main,
642 hid_parser_global,
643 hid_parser_local,
644 hid_parser_reserved
645 };
646
647 if (!(device = kzalloc(sizeof(struct hid_device), GFP_KERNEL)))
648 return NULL;
649
650 if (!(device->collection = kzalloc(sizeof(struct hid_collection) *
651 HID_DEFAULT_NUM_COLLECTIONS, GFP_KERNEL))) {
652 kfree(device);
653 return NULL;
654 }
655 device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
656
657 for (i = 0; i < HID_REPORT_TYPES; i++)
658 INIT_LIST_HEAD(&device->report_enum[i].report_list);
659
660 if (!(device->rdesc = (__u8 *)kmalloc(size, GFP_KERNEL))) {
661 kfree(device->collection);
662 kfree(device);
663 return NULL;
664 }
665 memcpy(device->rdesc, start, size);
666 device->rsize = size;
667
668 if (!(parser = kzalloc(sizeof(struct hid_parser), GFP_KERNEL))) {
669 kfree(device->rdesc);
670 kfree(device->collection);
671 kfree(device);
672 return NULL;
673 }
674 parser->device = device;
675
676 end = start + size;
677 while ((start = fetch_item(start, end, &item)) != NULL) {
678
679 if (item.format != HID_ITEM_FORMAT_SHORT) {
680 dbg("unexpected long global item");
681 kfree(device->collection);
682 hid_free_device(device);
683 kfree(parser);
684 return NULL;
685 }
686
687 if (dispatch_type[item.type](parser, &item)) {
688 dbg("item %u %u %u %u parsing failed\n",
689 item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
690 kfree(device->collection);
691 hid_free_device(device);
692 kfree(parser);
693 return NULL;
694 }
695
696 if (start == end) {
697 if (parser->collection_stack_ptr) {
698 dbg("unbalanced collection at end of report description");
699 kfree(device->collection);
700 hid_free_device(device);
701 kfree(parser);
702 return NULL;
703 }
704 if (parser->local.delimiter_depth) {
705 dbg("unbalanced delimiter at end of report description");
706 kfree(device->collection);
707 hid_free_device(device);
708 kfree(parser);
709 return NULL;
710 }
711 kfree(parser);
712 return device;
713 }
714 }
715
716 dbg("item fetching failed at offset %d\n", (int)(end - start));
717 kfree(device->collection);
718 hid_free_device(device);
719 kfree(parser);
720 return NULL;
721}
722
723/*
724 * Convert a signed n-bit integer to signed 32-bit integer. Common
725 * cases are done through the compiler, the screwed things has to be
726 * done by hand.
727 */
728
729static s32 snto32(__u32 value, unsigned n)
730{
731 switch (n) {
732 case 8: return ((__s8)value);
733 case 16: return ((__s16)value);
734 case 32: return ((__s32)value);
735 }
736 return value & (1 << (n - 1)) ? value | (-1 << n) : value;
737}
738
739/*
740 * Convert a signed 32-bit integer to a signed n-bit integer.
741 */
742
743static u32 s32ton(__s32 value, unsigned n)
744{
745 s32 a = value >> (n - 1);
746 if (a && a != -1)
747 return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
748 return value & ((1 << n) - 1);
749}
750
751/*
752 * Extract/implement a data field from/to a little endian report (bit array).
753 *
754 * Code sort-of follows HID spec:
755 * http://www.usb.org/developers/devclass_docs/HID1_11.pdf
756 *
757 * While the USB HID spec allows unlimited length bit fields in "report
758 * descriptors", most devices never use more than 16 bits.
759 * One model of UPS is claimed to report "LINEV" as a 32-bit field.
760 * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
761 */
762
763static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
764{
765 u64 x;
766
767 WARN_ON(n > 32);
768
769 report += offset >> 3; /* adjust byte index */
770 offset &= 7; /* now only need bit offset into one byte */
771 x = get_unaligned((u64 *) report);
772 x = le64_to_cpu(x);
773 x = (x >> offset) & ((1ULL << n) - 1); /* extract bit field */
774 return (u32) x;
775}
776
777/*
778 * "implement" : set bits in a little endian bit stream.
779 * Same concepts as "extract" (see comments above).
780 * The data mangled in the bit stream remains in little endian
781 * order the whole time. It make more sense to talk about
782 * endianness of register values by considering a register
783 * a "cached" copy of the little endiad bit stream.
784 */
785static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
786{
787 u64 x;
788 u64 m = (1ULL << n) - 1;
789
790 WARN_ON(n > 32);
791
792 WARN_ON(value > m);
793 value &= m;
794
795 report += offset >> 3;
796 offset &= 7;
797
798 x = get_unaligned((u64 *)report);
799 x &= cpu_to_le64(~(m << offset));
800 x |= cpu_to_le64(((u64) value) << offset);
801 put_unaligned(x, (u64 *) report);
802}
803
804/*
805 * Search an array for a value.
806 */
807
808static __inline__ int search(__s32 *array, __s32 value, unsigned n)
809{
810 while (n--) {
811 if (*array++ == value)
812 return 0;
813 }
814 return -1;
815}
816
817static void hid_process_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, int interrupt)
818{
819 hid_dump_input(usage, value);
820 if (hid->claimed & HID_CLAIMED_INPUT)
821 hidinput_hid_event(hid, field, usage, value);
822 if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt)
823 hiddev_hid_event(hid, field, usage, value);
824}
825
826/*
827 * Analyse a received field, and fetch the data from it. The field
828 * content is stored for next report processing (we do differential
829 * reporting to the layer).
830 */
831
832static void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, int interrupt)
833{
834 unsigned n;
835 unsigned count = field->report_count;
836 unsigned offset = field->report_offset;
837 unsigned size = field->report_size;
838 __s32 min = field->logical_minimum;
839 __s32 max = field->logical_maximum;
840 __s32 *value;
841
842 if (!(value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC)))
843 return;
844
845 for (n = 0; n < count; n++) {
846
847 value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
848 extract(data, offset + n * size, size);
849
850 if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
851 && value[n] >= min && value[n] <= max
852 && field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
853 goto exit;
854 }
855
856 for (n = 0; n < count; n++) {
857
858 if (HID_MAIN_ITEM_VARIABLE & field->flags) {
859 hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
860 continue;
861 }
862
863 if (field->value[n] >= min && field->value[n] <= max
864 && field->usage[field->value[n] - min].hid
865 && search(value, field->value[n], count))
866 hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);
867
868 if (value[n] >= min && value[n] <= max
869 && field->usage[value[n] - min].hid
870 && search(field->value, value[n], count))
871 hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
872 }
873
874 memcpy(field->value, value, count * sizeof(__s32));
875exit:
876 kfree(value);
877}
878
879
880/*
881 * Output the field into the report.
882 */
883
884static void hid_output_field(struct hid_field *field, __u8 *data)
885{
886 unsigned count = field->report_count;
887 unsigned offset = field->report_offset;
888 unsigned size = field->report_size;
889 unsigned n;
890
891 for (n = 0; n < count; n++) {
892 if (field->logical_minimum < 0) /* signed values */
893 implement(data, offset + n * size, size, s32ton(field->value[n], size));
894 else /* unsigned values */
895 implement(data, offset + n * size, size, field->value[n]);
896 }
897}
898
899/*
900 * Create a report.
901 */
902
903static void hid_output_report(struct hid_report *report, __u8 *data)
904{
905 unsigned n;
906
907 if (report->id > 0)
908 *data++ = report->id;
909
910 for (n = 0; n < report->maxfield; n++)
911 hid_output_field(report->field[n], data);
912}
913
914/*
915 * Set a field value. The report this field belongs to has to be
916 * created and transferred to the device, to set this value in the
917 * device.
918 */
919
920int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
921{
922 unsigned size = field->report_size;
923
924 hid_dump_input(field->usage + offset, value);
925
926 if (offset >= field->report_count) {
927 dbg("offset (%d) exceeds report_count (%d)", offset, field->report_count);
928 hid_dump_field(field, 8);
929 return -1;
930 }
931 if (field->logical_minimum < 0) {
932 if (value != snto32(s32ton(value, size), size)) {
933 dbg("value %d is out of range", value);
934 return -1;
935 }
936 }
937 field->value[offset] = value;
938 return 0;
939}
940
diff --git a/drivers/hid/hid-input.c b/drivers/hid/hid-input.c
new file mode 100644
index 000000000000..d459005062e0
--- /dev/null
+++ b/drivers/hid/hid-input.c
@@ -0,0 +1,840 @@
1/*
2 * $Id: hid-input.c,v 1.2 2002/04/23 00:59:25 rdamazio Exp $
3 *
4 * Copyright (c) 2000-2001 Vojtech Pavlik
5 * Copyright (c) 2006 Jiri Kosina
6 *
7 * HID to Linux Input mapping
8 */
9
10/*
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
15 *
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
20 *
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
24 *
25 * Should you need to contact me, the author, you can do so either by
26 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
27 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
28 */
29
30#include <linux/module.h>
31#include <linux/slab.h>
32#include <linux/kernel.h>
33#include <linux/usb/input.h>
34
35#undef DEBUG
36
37#include <linux/hid.h>
38
39#define unk KEY_UNKNOWN
40
41static const unsigned char hid_keyboard[256] = {
42 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
43 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,
44 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,
45 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
46 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
47 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
48 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
49 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
50 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
51 122,123, 90, 91, 85,unk,unk,unk,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,unk,unk,unk,unk,unk,unk,unk,unk,
54 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
55 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
56 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
57 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
58};
59
60static const struct {
61 __s32 x;
62 __s32 y;
63} hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
64
65#define map_abs(c) do { usage->code = c; usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX; } while (0)
66#define map_rel(c) do { usage->code = c; usage->type = EV_REL; bit = input->relbit; max = REL_MAX; } while (0)
67#define map_key(c) do { usage->code = c; usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; } while (0)
68#define map_led(c) do { usage->code = c; usage->type = EV_LED; bit = input->ledbit; max = LED_MAX; } while (0)
69
70#define map_abs_clear(c) do { map_abs(c); clear_bit(c, bit); } while (0)
71#define map_key_clear(c) do { map_key(c); clear_bit(c, bit); } while (0)
72
73#ifdef CONFIG_USB_HIDINPUT_POWERBOOK
74
75struct hidinput_key_translation {
76 u16 from;
77 u16 to;
78 u8 flags;
79};
80
81#define POWERBOOK_FLAG_FKEY 0x01
82
83static struct hidinput_key_translation powerbook_fn_keys[] = {
84 { KEY_BACKSPACE, KEY_DELETE },
85 { KEY_F1, KEY_BRIGHTNESSDOWN, POWERBOOK_FLAG_FKEY },
86 { KEY_F2, KEY_BRIGHTNESSUP, POWERBOOK_FLAG_FKEY },
87 { KEY_F3, KEY_MUTE, POWERBOOK_FLAG_FKEY },
88 { KEY_F4, KEY_VOLUMEDOWN, POWERBOOK_FLAG_FKEY },
89 { KEY_F5, KEY_VOLUMEUP, POWERBOOK_FLAG_FKEY },
90 { KEY_F6, KEY_NUMLOCK, POWERBOOK_FLAG_FKEY },
91 { KEY_F7, KEY_SWITCHVIDEOMODE, POWERBOOK_FLAG_FKEY },
92 { KEY_F8, KEY_KBDILLUMTOGGLE, POWERBOOK_FLAG_FKEY },
93 { KEY_F9, KEY_KBDILLUMDOWN, POWERBOOK_FLAG_FKEY },
94 { KEY_F10, KEY_KBDILLUMUP, POWERBOOK_FLAG_FKEY },
95 { KEY_UP, KEY_PAGEUP },
96 { KEY_DOWN, KEY_PAGEDOWN },
97 { KEY_LEFT, KEY_HOME },
98 { KEY_RIGHT, KEY_END },
99 { }
100};
101
102static struct hidinput_key_translation powerbook_numlock_keys[] = {
103 { KEY_J, KEY_KP1 },
104 { KEY_K, KEY_KP2 },
105 { KEY_L, KEY_KP3 },
106 { KEY_U, KEY_KP4 },
107 { KEY_I, KEY_KP5 },
108 { KEY_O, KEY_KP6 },
109 { KEY_7, KEY_KP7 },
110 { KEY_8, KEY_KP8 },
111 { KEY_9, KEY_KP9 },
112 { KEY_M, KEY_KP0 },
113 { KEY_DOT, KEY_KPDOT },
114 { KEY_SLASH, KEY_KPPLUS },
115 { KEY_SEMICOLON, KEY_KPMINUS },
116 { KEY_P, KEY_KPASTERISK },
117 { KEY_MINUS, KEY_KPEQUAL },
118 { KEY_0, KEY_KPSLASH },
119 { KEY_F6, KEY_NUMLOCK },
120 { KEY_KPENTER, KEY_KPENTER },
121 { KEY_BACKSPACE, KEY_BACKSPACE },
122 { }
123};
124
125static struct hidinput_key_translation powerbook_iso_keyboard[] = {
126 { KEY_GRAVE, KEY_102ND },
127 { KEY_102ND, KEY_GRAVE },
128 { }
129};
130
131
132static int usbhid_pb_fnmode = 1;
133module_param_named(pb_fnmode, usbhid_pb_fnmode, int, 0644);
134MODULE_PARM_DESC(pb_fnmode,
135 "Mode of fn key on PowerBooks (0 = disabled, 1 = fkeyslast, 2 = fkeysfirst)");
136
137static struct hidinput_key_translation *find_translation(struct hidinput_key_translation *table, u16 from)
138{
139 struct hidinput_key_translation *trans;
140
141 /* Look for the translation */
142 for (trans = table; trans->from; trans++)
143 if (trans->from == from)
144 return trans;
145
146 return NULL;
147}
148
149static int hidinput_pb_event(struct hid_device *hid, struct input_dev *input,
150 struct hid_usage *usage, __s32 value)
151{
152 struct hidinput_key_translation *trans;
153
154 if (usage->code == KEY_FN) {
155 if (value) hid->quirks |= HID_QUIRK_POWERBOOK_FN_ON;
156 else hid->quirks &= ~HID_QUIRK_POWERBOOK_FN_ON;
157
158 input_event(input, usage->type, usage->code, value);
159
160 return 1;
161 }
162
163 if (usbhid_pb_fnmode) {
164 int do_translate;
165
166 trans = find_translation(powerbook_fn_keys, usage->code);
167 if (trans) {
168 if (test_bit(usage->code, hid->pb_pressed_fn))
169 do_translate = 1;
170 else if (trans->flags & POWERBOOK_FLAG_FKEY)
171 do_translate =
172 (usbhid_pb_fnmode == 2 && (hid->quirks & HID_QUIRK_POWERBOOK_FN_ON)) ||
173 (usbhid_pb_fnmode == 1 && !(hid->quirks & HID_QUIRK_POWERBOOK_FN_ON));
174 else
175 do_translate = (hid->quirks & HID_QUIRK_POWERBOOK_FN_ON);
176
177 if (do_translate) {
178 if (value)
179 set_bit(usage->code, hid->pb_pressed_fn);
180 else
181 clear_bit(usage->code, hid->pb_pressed_fn);
182
183 input_event(input, usage->type, trans->to, value);
184
185 return 1;
186 }
187 }
188
189 if (test_bit(usage->code, hid->pb_pressed_numlock) ||
190 test_bit(LED_NUML, input->led)) {
191 trans = find_translation(powerbook_numlock_keys, usage->code);
192
193 if (trans) {
194 if (value)
195 set_bit(usage->code, hid->pb_pressed_numlock);
196 else
197 clear_bit(usage->code, hid->pb_pressed_numlock);
198
199 input_event(input, usage->type, trans->to, value);
200 }
201
202 return 1;
203 }
204 }
205
206 if (hid->quirks & HID_QUIRK_POWERBOOK_ISO_KEYBOARD) {
207 trans = find_translation(powerbook_iso_keyboard, usage->code);
208 if (trans) {
209 input_event(input, usage->type, trans->to, value);
210 return 1;
211 }
212 }
213
214 return 0;
215}
216
217static void hidinput_pb_setup(struct input_dev *input)
218{
219 struct hidinput_key_translation *trans;
220
221 set_bit(KEY_NUMLOCK, input->keybit);
222
223 /* Enable all needed keys */
224 for (trans = powerbook_fn_keys; trans->from; trans++)
225 set_bit(trans->to, input->keybit);
226
227 for (trans = powerbook_numlock_keys; trans->from; trans++)
228 set_bit(trans->to, input->keybit);
229
230 for (trans = powerbook_iso_keyboard; trans->from; trans++)
231 set_bit(trans->to, input->keybit);
232
233}
234#else
235static inline int hidinput_pb_event(struct hid_device *hid, struct input_dev *input,
236 struct hid_usage *usage, __s32 value)
237{
238 return 0;
239}
240
241static inline void hidinput_pb_setup(struct input_dev *input)
242{
243}
244#endif
245
246static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
247 struct hid_usage *usage)
248{
249 struct input_dev *input = hidinput->input;
250 struct hid_device *device = input->private;
251 int max = 0, code;
252 unsigned long *bit = NULL;
253
254 field->hidinput = hidinput;
255
256#ifdef DEBUG
257 printk(KERN_DEBUG "Mapping: ");
258 resolv_usage(usage->hid);
259 printk(" ---> ");
260#endif
261
262 if (field->flags & HID_MAIN_ITEM_CONSTANT)
263 goto ignore;
264
265 switch (usage->hid & HID_USAGE_PAGE) {
266
267 case HID_UP_UNDEFINED:
268 goto ignore;
269
270 case HID_UP_KEYBOARD:
271
272 set_bit(EV_REP, input->evbit);
273
274 if ((usage->hid & HID_USAGE) < 256) {
275 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
276 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
277 } else
278 map_key(KEY_UNKNOWN);
279
280 break;
281
282 case HID_UP_BUTTON:
283
284 code = ((usage->hid - 1) & 0xf);
285
286 switch (field->application) {
287 case HID_GD_MOUSE:
288 case HID_GD_POINTER: code += 0x110; break;
289 case HID_GD_JOYSTICK: code += 0x120; break;
290 case HID_GD_GAMEPAD: code += 0x130; break;
291 default:
292 switch (field->physical) {
293 case HID_GD_MOUSE:
294 case HID_GD_POINTER: code += 0x110; break;
295 case HID_GD_JOYSTICK: code += 0x120; break;
296 case HID_GD_GAMEPAD: code += 0x130; break;
297 default: code += 0x100;
298 }
299 }
300
301 map_key(code);
302 break;
303
304
305 case HID_UP_SIMULATION:
306
307 switch (usage->hid & 0xffff) {
308 case 0xba: map_abs(ABS_RUDDER); break;
309 case 0xbb: map_abs(ABS_THROTTLE); break;
310 case 0xc4: map_abs(ABS_GAS); break;
311 case 0xc5: map_abs(ABS_BRAKE); break;
312 case 0xc8: map_abs(ABS_WHEEL); break;
313 default: goto ignore;
314 }
315 break;
316
317 case HID_UP_GENDESK:
318
319 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */
320 switch (usage->hid & 0xf) {
321 case 0x1: map_key_clear(KEY_POWER); break;
322 case 0x2: map_key_clear(KEY_SLEEP); break;
323 case 0x3: map_key_clear(KEY_WAKEUP); break;
324 default: goto unknown;
325 }
326 break;
327 }
328
329 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */
330 switch (usage->hid) {
331 case HID_GD_UP: usage->hat_dir = 1; break;
332 case HID_GD_DOWN: usage->hat_dir = 5; break;
333 case HID_GD_RIGHT: usage->hat_dir = 3; break;
334 case HID_GD_LEFT: usage->hat_dir = 7; break;
335 default: goto unknown;
336 }
337 if (field->dpad) {
338 map_abs(field->dpad);
339 goto ignore;
340 }
341 map_abs(ABS_HAT0X);
342 break;
343 }
344
345 switch (usage->hid) {
346
347 /* These usage IDs map directly to the usage codes. */
348 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
349 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
350 case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
351 if (field->flags & HID_MAIN_ITEM_RELATIVE)
352 map_rel(usage->hid & 0xf);
353 else
354 map_abs(usage->hid & 0xf);
355 break;
356
357 case HID_GD_HATSWITCH:
358 usage->hat_min = field->logical_minimum;
359 usage->hat_max = field->logical_maximum;
360 map_abs(ABS_HAT0X);
361 break;
362
363 case HID_GD_START: map_key_clear(BTN_START); break;
364 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;
365
366 default: goto unknown;
367 }
368
369 break;
370
371 case HID_UP_LED:
372 if (((usage->hid - 1) & 0xffff) >= LED_MAX)
373 goto ignore;
374 map_led((usage->hid - 1) & 0xffff);
375 break;
376
377 case HID_UP_DIGITIZER:
378
379 switch (usage->hid & 0xff) {
380
381 case 0x30: /* TipPressure */
382 if (!test_bit(BTN_TOUCH, input->keybit)) {
383 device->quirks |= HID_QUIRK_NOTOUCH;
384 set_bit(EV_KEY, input->evbit);
385 set_bit(BTN_TOUCH, input->keybit);
386 }
387
388 map_abs_clear(ABS_PRESSURE);
389 break;
390
391 case 0x32: /* InRange */
392 switch (field->physical & 0xff) {
393 case 0x21: map_key(BTN_TOOL_MOUSE); break;
394 case 0x22: map_key(BTN_TOOL_FINGER); break;
395 default: map_key(BTN_TOOL_PEN); break;
396 }
397 break;
398
399 case 0x3c: /* Invert */
400 map_key_clear(BTN_TOOL_RUBBER);
401 break;
402
403 case 0x33: /* Touch */
404 case 0x42: /* TipSwitch */
405 case 0x43: /* TipSwitch2 */
406 device->quirks &= ~HID_QUIRK_NOTOUCH;
407 map_key_clear(BTN_TOUCH);
408 break;
409
410 case 0x44: /* BarrelSwitch */
411 map_key_clear(BTN_STYLUS);
412 break;
413
414 default: goto unknown;
415 }
416 break;
417
418 case HID_UP_CONSUMER: /* USB HUT v1.1, pages 56-62 */
419
420 switch (usage->hid & HID_USAGE) {
421 case 0x000: goto ignore;
422 case 0x034: map_key_clear(KEY_SLEEP); break;
423 case 0x036: map_key_clear(BTN_MISC); break;
424 case 0x045: map_key_clear(KEY_RADIO); break;
425 case 0x08a: map_key_clear(KEY_WWW); break;
426 case 0x08d: map_key_clear(KEY_PROGRAM); break;
427 case 0x095: map_key_clear(KEY_HELP); break;
428 case 0x09c: map_key_clear(KEY_CHANNELUP); break;
429 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;
430 case 0x0b0: map_key_clear(KEY_PLAY); break;
431 case 0x0b1: map_key_clear(KEY_PAUSE); break;
432 case 0x0b2: map_key_clear(KEY_RECORD); break;
433 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;
434 case 0x0b4: map_key_clear(KEY_REWIND); break;
435 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;
436 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;
437 case 0x0b7: map_key_clear(KEY_STOPCD); break;
438 case 0x0b8: map_key_clear(KEY_EJECTCD); break;
439 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;
440 case 0x0e0: map_abs_clear(ABS_VOLUME); break;
441 case 0x0e2: map_key_clear(KEY_MUTE); break;
442 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;
443 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;
444 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;
445 case 0x183: map_key_clear(KEY_CONFIG); break;
446 case 0x18a: map_key_clear(KEY_MAIL); break;
447 case 0x192: map_key_clear(KEY_CALC); break;
448 case 0x194: map_key_clear(KEY_FILE); break;
449 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;
450 case 0x201: map_key_clear(KEY_NEW); break;
451 case 0x207: map_key_clear(KEY_SAVE); break;
452 case 0x208: map_key_clear(KEY_PRINT); break;
453 case 0x209: map_key_clear(KEY_PROPS); break;
454 case 0x21a: map_key_clear(KEY_UNDO); break;
455 case 0x21b: map_key_clear(KEY_COPY); break;
456 case 0x21c: map_key_clear(KEY_CUT); break;
457 case 0x21d: map_key_clear(KEY_PASTE); break;
458 case 0x221: map_key_clear(KEY_FIND); break;
459 case 0x223: map_key_clear(KEY_HOMEPAGE); break;
460 case 0x224: map_key_clear(KEY_BACK); break;
461 case 0x225: map_key_clear(KEY_FORWARD); break;
462 case 0x226: map_key_clear(KEY_STOP); break;
463 case 0x227: map_key_clear(KEY_REFRESH); break;
464 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;
465 case 0x233: map_key_clear(KEY_SCROLLUP); break;
466 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;
467 case 0x238: map_rel(REL_HWHEEL); break;
468 case 0x279: map_key_clear(KEY_REDO); break;
469 case 0x289: map_key_clear(KEY_REPLY); break;
470 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;
471 case 0x28c: map_key_clear(KEY_SEND); break;
472
473 /* Reported on a Cherry Cymotion keyboard */
474 case 0x301: map_key_clear(KEY_PROG1); break;
475 case 0x302: map_key_clear(KEY_PROG2); break;
476 case 0x303: map_key_clear(KEY_PROG3); break;
477
478 default: goto ignore;
479 }
480 break;
481
482 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */
483
484 set_bit(EV_REP, input->evbit);
485 switch (usage->hid & HID_USAGE) {
486 case 0x021: map_key_clear(KEY_PRINT); break;
487 case 0x070: map_key_clear(KEY_HP); break;
488 case 0x071: map_key_clear(KEY_CAMERA); break;
489 case 0x072: map_key_clear(KEY_SOUND); break;
490 case 0x073: map_key_clear(KEY_QUESTION); break;
491 case 0x080: map_key_clear(KEY_EMAIL); break;
492 case 0x081: map_key_clear(KEY_CHAT); break;
493 case 0x082: map_key_clear(KEY_SEARCH); break;
494 case 0x083: map_key_clear(KEY_CONNECT); break;
495 case 0x084: map_key_clear(KEY_FINANCE); break;
496 case 0x085: map_key_clear(KEY_SPORT); break;
497 case 0x086: map_key_clear(KEY_SHOP); break;
498 default: goto ignore;
499 }
500 break;
501
502 case HID_UP_MSVENDOR:
503 goto ignore;
504
505 case HID_UP_CUSTOM: /* Reported on Logitech and Powerbook USB keyboards */
506
507 set_bit(EV_REP, input->evbit);
508 switch(usage->hid & HID_USAGE) {
509 case 0x003:
510 /* The fn key on Apple PowerBooks */
511 map_key_clear(KEY_FN);
512 hidinput_pb_setup(input);
513 break;
514
515 default: goto ignore;
516 }
517 break;
518
519 case HID_UP_LOGIVENDOR: /* Reported on Logitech Ultra X Media Remote */
520
521 set_bit(EV_REP, input->evbit);
522 switch(usage->hid & HID_USAGE) {
523 case 0x004: map_key_clear(KEY_AGAIN); break;
524 case 0x00d: map_key_clear(KEY_HOME); break;
525 case 0x024: map_key_clear(KEY_SHUFFLE); break;
526 case 0x025: map_key_clear(KEY_TV); break;
527 case 0x026: map_key_clear(KEY_MENU); break;
528 case 0x031: map_key_clear(KEY_AUDIO); break;
529 case 0x032: map_key_clear(KEY_TEXT); break;
530 case 0x033: map_key_clear(KEY_LAST); break;
531 case 0x047: map_key_clear(KEY_MP3); break;
532 case 0x048: map_key_clear(KEY_DVD); break;
533 case 0x049: map_key_clear(KEY_MEDIA); break;
534 case 0x04a: map_key_clear(KEY_VIDEO); break;
535 case 0x04b: map_key_clear(KEY_ANGLE); break;
536 case 0x04c: map_key_clear(KEY_LANGUAGE); break;
537 case 0x04d: map_key_clear(KEY_SUBTITLE); break;
538 case 0x051: map_key_clear(KEY_RED); break;
539 case 0x052: map_key_clear(KEY_CLOSE); break;
540 default: goto ignore;
541 }
542 break;
543
544 case HID_UP_PID:
545
546 switch(usage->hid & HID_USAGE) {
547 case 0xa4: map_key_clear(BTN_DEAD); break;
548 default: goto ignore;
549 }
550 break;
551
552 default:
553 unknown:
554 if (field->report_size == 1) {
555 if (field->report->type == HID_OUTPUT_REPORT) {
556 map_led(LED_MISC);
557 break;
558 }
559 map_key(BTN_MISC);
560 break;
561 }
562 if (field->flags & HID_MAIN_ITEM_RELATIVE) {
563 map_rel(REL_MISC);
564 break;
565 }
566 map_abs(ABS_MISC);
567 break;
568 }
569
570 if (device->quirks & HID_QUIRK_MIGHTYMOUSE) {
571 if (usage->hid == HID_GD_Z)
572 map_rel(REL_HWHEEL);
573 else if (usage->code == BTN_1)
574 map_key(BTN_2);
575 else if (usage->code == BTN_2)
576 map_key(BTN_1);
577 }
578
579 if ((device->quirks & (HID_QUIRK_2WHEEL_MOUSE_HACK_7 | HID_QUIRK_2WHEEL_MOUSE_HACK_5)) &&
580 (usage->type == EV_REL) && (usage->code == REL_WHEEL))
581 set_bit(REL_HWHEEL, bit);
582
583 if (((device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_5) && (usage->hid == 0x00090005))
584 || ((device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_7) && (usage->hid == 0x00090007)))
585 goto ignore;
586
587 if ((device->quirks & HID_QUIRK_BAD_RELATIVE_KEYS) &&
588 usage->type == EV_KEY && (field->flags & HID_MAIN_ITEM_RELATIVE))
589 field->flags &= ~HID_MAIN_ITEM_RELATIVE;
590
591 set_bit(usage->type, input->evbit);
592
593 while (usage->code <= max && test_and_set_bit(usage->code, bit))
594 usage->code = find_next_zero_bit(bit, max + 1, usage->code);
595
596 if (usage->code > max)
597 goto ignore;
598
599
600 if (usage->type == EV_ABS) {
601
602 int a = field->logical_minimum;
603 int b = field->logical_maximum;
604
605 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
606 a = field->logical_minimum = 0;
607 b = field->logical_maximum = 255;
608 }
609
610 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
611 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
612 else input_set_abs_params(input, usage->code, a, b, 0, 0);
613
614 }
615
616 if (usage->type == EV_ABS &&
617 (usage->hat_min < usage->hat_max || usage->hat_dir)) {
618 int i;
619 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
620 input_set_abs_params(input, i, -1, 1, 0, 0);
621 set_bit(i, input->absbit);
622 }
623 if (usage->hat_dir && !field->dpad)
624 field->dpad = usage->code;
625 }
626
627#ifdef DEBUG
628 resolv_event(usage->type, usage->code);
629 printk("\n");
630#endif
631 return;
632
633ignore:
634#ifdef DEBUG
635 printk("IGNORED\n");
636#endif
637 return;
638}
639
640void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
641{
642 struct input_dev *input;
643 int *quirks = &hid->quirks;
644
645 if (!field->hidinput)
646 return;
647
648 input = field->hidinput->input;
649
650 if (!usage->type)
651 return;
652
653 if (((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_5) && (usage->hid == 0x00090005))
654 || ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_7) && (usage->hid == 0x00090007))) {
655 if (value) hid->quirks |= HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
656 else hid->quirks &= ~HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
657 return;
658 }
659
660 if ((hid->quirks & HID_QUIRK_INVERT_HWHEEL) && (usage->code == REL_HWHEEL)) {
661 input_event(input, usage->type, usage->code, -value);
662 return;
663 }
664
665 if ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_ON) && (usage->code == REL_WHEEL)) {
666 input_event(input, usage->type, REL_HWHEEL, value);
667 return;
668 }
669
670 if ((hid->quirks & HID_QUIRK_POWERBOOK_HAS_FN) && hidinput_pb_event(hid, input, usage, value))
671 return;
672
673 if (usage->hat_min < usage->hat_max || usage->hat_dir) {
674 int hat_dir = usage->hat_dir;
675 if (!hat_dir)
676 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
677 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
678 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);
679 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
680 return;
681 }
682
683 if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
684 *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
685 return;
686 }
687
688 if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
689 if (value) {
690 input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
691 return;
692 }
693 input_event(input, usage->type, usage->code, 0);
694 input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
695 return;
696 }
697
698 if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
699 int a = field->logical_minimum;
700 int b = field->logical_maximum;
701 input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
702 }
703
704 if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
705 dbg("Maximum Effects - %d",value);
706 return;
707 }
708
709 if (usage->hid == (HID_UP_PID | 0x7fUL)) {
710 dbg("PID Pool Report\n");
711 return;
712 }
713
714 if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
715 return;
716
717 input_event(input, usage->type, usage->code, value);
718
719 if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
720 input_event(input, usage->type, usage->code, 0);
721}
722
723void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
724{
725 struct hid_input *hidinput;
726
727 list_for_each_entry(hidinput, &hid->inputs, list)
728 input_sync(hidinput->input);
729}
730
731static int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
732{
733 struct hid_report *report;
734 int i, j;
735
736 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
737 for (i = 0; i < report->maxfield; i++) {
738 *field = report->field[i];
739 for (j = 0; j < (*field)->maxusage; j++)
740 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
741 return j;
742 }
743 }
744 return -1;
745}
746
747/*
748 * Register the input device; print a message.
749 * Configure the input layer interface
750 * Read all reports and initialize the absolute field values.
751 */
752
753int hidinput_connect(struct hid_device *hid)
754{
755 struct usb_device *dev = hid->dev;
756 struct hid_report *report;
757 struct hid_input *hidinput = NULL;
758 struct input_dev *input_dev;
759 int i, j, k;
760
761 INIT_LIST_HEAD(&hid->inputs);
762
763 for (i = 0; i < hid->maxcollection; i++)
764 if (hid->collection[i].type == HID_COLLECTION_APPLICATION ||
765 hid->collection[i].type == HID_COLLECTION_PHYSICAL)
766 if (IS_INPUT_APPLICATION(hid->collection[i].usage))
767 break;
768
769 if (i == hid->maxcollection)
770 return -1;
771
772 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++)
773 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
774
775 if (!report->maxfield)
776 continue;
777
778 if (!hidinput) {
779 hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
780 input_dev = input_allocate_device();
781 if (!hidinput || !input_dev) {
782 kfree(hidinput);
783 input_free_device(input_dev);
784 err("Out of memory during hid input probe");
785 return -1;
786 }
787
788 input_dev->private = hid;
789 input_dev->event = hidinput_input_event;
790 input_dev->open = hidinput_open;
791 input_dev->close = hidinput_close;
792
793 input_dev->name = hid->name;
794 input_dev->phys = hid->phys;
795 input_dev->uniq = hid->uniq;
796 usb_to_input_id(dev, &input_dev->id);
797 input_dev->cdev.dev = &hid->intf->dev;
798
799 hidinput->input = input_dev;
800 list_add_tail(&hidinput->list, &hid->inputs);
801 }
802
803 for (i = 0; i < report->maxfield; i++)
804 for (j = 0; j < report->field[i]->maxusage; j++)
805 hidinput_configure_usage(hidinput, report->field[i],
806 report->field[i]->usage + j);
807
808 if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
809 /* This will leave hidinput NULL, so that it
810 * allocates another one if we have more inputs on
811 * the same interface. Some devices (e.g. Happ's
812 * UGCI) cram a lot of unrelated inputs into the
813 * same interface. */
814 hidinput->report = report;
815 input_register_device(hidinput->input);
816 hidinput = NULL;
817 }
818 }
819
820 /* This only gets called when we are a single-input (most of the
821 * time). IOW, not a HID_QUIRK_MULTI_INPUT. The hid_ff_init() is
822 * only useful in this case, and not for multi-input quirks. */
823 if (hidinput) {
824 hid_ff_init(hid);
825 input_register_device(hidinput->input);
826 }
827
828 return 0;
829}
830
831void hidinput_disconnect(struct hid_device *hid)
832{
833 struct hid_input *hidinput, *next;
834
835 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
836 list_del(&hidinput->list);
837 input_unregister_device(hidinput->input);
838 kfree(hidinput);
839 }
840}
generated by cgit v1.2.2 (git 2.25.0) at 2024-11-01 17:24:59 -0400