2
* USB HID support for Linux
4
* Copyright (c) 1999 Andreas Gal
5
* Copyright (c) 2000-2001 Vojtech Pavlik <vojtech@suse.cz>
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* This program is free software; you can redistribute it and/or modify it
10
* under the terms of the GNU General Public License as published by the Free
11
* Software Foundation; either version 2 of the License, or (at your option)
15
#include <linux/module.h>
16
#include <linux/slab.h>
17
#include <linux/init.h>
18
#include <linux/kernel.h>
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#include <linux/sched.h>
20
#include <linux/list.h>
22
#include <linux/smp_lock.h>
23
#include <linux/spinlock.h>
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#include <asm/unaligned.h>
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#include <asm/byteorder.h>
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#include <linux/input.h>
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#include <linux/usb.h>
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#include <linux/hiddev.h>
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#define DRIVER_VERSION "v2.0-2.6.3-pc0.1"
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#define DRIVER_AUTHOR "Andreas Gal, Vojtech Pavlik"
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#define DRIVER_DESC "USB HID core driver"
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#define DRIVER_LICENSE "GPL"
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static char *hid_types[] = {"Device", "Pointer", "Mouse", "Device", "Joystick",
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"Gamepad", "Keyboard", "Keypad", "Multi-Axis Controller"};
49
* Register a new report for a device.
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static struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
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struct hid_report_enum *report_enum = device->report_enum + type;
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struct hid_report *report;
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if (report_enum->report_id_hash[id])
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return report_enum->report_id_hash[id];
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if (!(report = kmalloc(sizeof(struct hid_report), GFP_KERNEL)))
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memset(report, 0, sizeof(struct hid_report));
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report_enum->numbered = 1;
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report->device = device;
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report_enum->report_id_hash[id] = report;
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list_add_tail(&report->list, &report_enum->report_list);
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* Register a new field for this report.
82
static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
84
struct hid_field *field;
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if (report->maxfield == HID_MAX_FIELDS) {
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dbg("too many fields in report");
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if (!(field = kmalloc(sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
92
+ values * sizeof(unsigned), GFP_KERNEL))) return NULL;
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memset(field, 0, sizeof(struct hid_field) + usages * sizeof(struct hid_usage)
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+ values * sizeof(unsigned));
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report->field[report->maxfield++] = field;
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field->usage = (struct hid_usage *)(field + 1);
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field->value = (unsigned *)(field->usage + usages);
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field->report = report;
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* Open a collection. The type/usage is pushed on the stack.
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static int open_collection(struct hid_parser *parser, unsigned type)
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struct hid_collection *collection;
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usage = parser->local.usage[0];
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if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
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dbg("collection stack overflow");
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if (parser->device->maxcollection == parser->device->collection_size) {
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collection = kmalloc(sizeof(struct hid_collection) *
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parser->device->collection_size * 2,
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if (collection == NULL) {
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dbg("failed to reallocate collection array");
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memcpy(collection, parser->device->collection,
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sizeof(struct hid_collection) *
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parser->device->collection_size);
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memset(collection + parser->device->collection_size, 0,
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sizeof(struct hid_collection) *
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parser->device->collection_size);
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kfree(parser->device->collection);
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parser->device->collection = collection;
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parser->device->collection_size *= 2;
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parser->collection_stack[parser->collection_stack_ptr++] =
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parser->device->maxcollection;
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collection = parser->device->collection +
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parser->device->maxcollection++;
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collection->type = type;
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collection->usage = usage;
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collection->level = parser->collection_stack_ptr - 1;
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if (type == HID_COLLECTION_APPLICATION)
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parser->device->maxapplication++;
156
* Close a collection.
159
static int close_collection(struct hid_parser *parser)
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if (!parser->collection_stack_ptr) {
162
dbg("collection stack underflow");
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parser->collection_stack_ptr--;
170
* Climb up the stack, search for the specified collection type
171
* and return the usage.
174
static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
177
for (n = parser->collection_stack_ptr - 1; n >= 0; n--)
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if (parser->device->collection[parser->collection_stack[n]].type == type)
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return parser->device->collection[parser->collection_stack[n]].usage;
180
return 0; /* we know nothing about this usage type */
184
* Add a usage to the temporary parser table.
187
static int hid_add_usage(struct hid_parser *parser, unsigned usage)
189
if (parser->local.usage_index >= HID_MAX_USAGES) {
190
dbg("usage index exceeded");
193
parser->local.usage[parser->local.usage_index] = usage;
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parser->local.collection_index[parser->local.usage_index] =
195
parser->collection_stack_ptr ?
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parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
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parser->local.usage_index++;
202
* Register a new field for this report.
205
static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
207
struct hid_report *report;
208
struct hid_field *field;
213
if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) {
214
dbg("hid_register_report failed");
218
if (parser->global.logical_maximum < parser->global.logical_minimum) {
219
dbg("logical range invalid %d %d", parser->global.logical_minimum, parser->global.logical_maximum);
222
usages = parser->local.usage_index;
224
offset = report->size;
225
report->size += parser->global.report_size * parser->global.report_count;
227
if (usages < parser->global.report_count)
228
usages = parser->global.report_count;
231
return 0; /* ignore padding fields */
233
if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL)
236
field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
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field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
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field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);
240
for (i = 0; i < usages; i++) {
242
/* Duplicate the last usage we parsed if we have excess values */
243
if (i >= parser->local.usage_index)
244
j = parser->local.usage_index - 1;
245
field->usage[i].hid = parser->local.usage[j];
246
field->usage[i].collection_index =
247
parser->local.collection_index[j];
250
field->maxusage = usages;
251
field->flags = flags;
252
field->report_offset = offset;
253
field->report_type = report_type;
254
field->report_size = parser->global.report_size;
255
field->report_count = parser->global.report_count;
256
field->logical_minimum = parser->global.logical_minimum;
257
field->logical_maximum = parser->global.logical_maximum;
258
field->physical_minimum = parser->global.physical_minimum;
259
field->physical_maximum = parser->global.physical_maximum;
260
field->unit_exponent = parser->global.unit_exponent;
261
field->unit = parser->global.unit;
267
* Read data value from item.
270
static __inline__ __u32 item_udata(struct hid_item *item)
272
switch (item->size) {
273
case 1: return item->data.u8;
274
case 2: return item->data.u16;
275
case 4: return item->data.u32;
280
static __inline__ __s32 item_sdata(struct hid_item *item)
282
switch (item->size) {
283
case 1: return item->data.s8;
284
case 2: return item->data.s16;
285
case 4: return item->data.s32;
291
* Process a global item.
294
static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
298
case HID_GLOBAL_ITEM_TAG_PUSH:
300
if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
301
dbg("global enviroment stack overflow");
305
memcpy(parser->global_stack + parser->global_stack_ptr++,
306
&parser->global, sizeof(struct hid_global));
309
case HID_GLOBAL_ITEM_TAG_POP:
311
if (!parser->global_stack_ptr) {
312
dbg("global enviroment stack underflow");
316
memcpy(&parser->global, parser->global_stack + --parser->global_stack_ptr,
317
sizeof(struct hid_global));
320
case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
321
parser->global.usage_page = item_udata(item);
324
case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
325
parser->global.logical_minimum = item_sdata(item);
328
case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
329
if (parser->global.logical_minimum < 0)
330
parser->global.logical_maximum = item_sdata(item);
332
parser->global.logical_maximum = item_udata(item);
335
case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
336
parser->global.physical_minimum = item_sdata(item);
339
case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
340
if (parser->global.physical_minimum < 0)
341
parser->global.physical_maximum = item_sdata(item);
343
parser->global.physical_maximum = item_udata(item);
346
case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
347
parser->global.unit_exponent = item_sdata(item);
350
case HID_GLOBAL_ITEM_TAG_UNIT:
351
parser->global.unit = item_udata(item);
354
case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
355
if ((parser->global.report_size = item_udata(item)) > 32) {
356
dbg("invalid report_size %d", parser->global.report_size);
361
case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
362
if ((parser->global.report_count = item_udata(item)) > HID_MAX_USAGES) {
363
dbg("invalid report_count %d", parser->global.report_count);
368
case HID_GLOBAL_ITEM_TAG_REPORT_ID:
369
if ((parser->global.report_id = item_udata(item)) == 0) {
370
dbg("report_id 0 is invalid");
376
dbg("unknown global tag 0x%x", item->tag);
382
* Process a local item.
385
static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
390
if (item->size == 0) {
391
dbg("item data expected for local item");
395
data = item_udata(item);
399
case HID_LOCAL_ITEM_TAG_DELIMITER:
403
* We treat items before the first delimiter
404
* as global to all usage sets (branch 0).
405
* In the moment we process only these global
406
* items and the first delimiter set.
408
if (parser->local.delimiter_depth != 0) {
409
dbg("nested delimiters");
412
parser->local.delimiter_depth++;
413
parser->local.delimiter_branch++;
415
if (parser->local.delimiter_depth < 1) {
416
dbg("bogus close delimiter");
419
parser->local.delimiter_depth--;
423
case HID_LOCAL_ITEM_TAG_USAGE:
425
if (parser->local.delimiter_branch > 1) {
426
dbg("alternative usage ignored");
431
data = (parser->global.usage_page << 16) + data;
433
return hid_add_usage(parser, data);
435
case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
437
if (parser->local.delimiter_branch > 1) {
438
dbg("alternative usage ignored");
443
data = (parser->global.usage_page << 16) + data;
445
parser->local.usage_minimum = data;
448
case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
450
if (parser->local.delimiter_branch > 1) {
451
dbg("alternative usage ignored");
456
data = (parser->global.usage_page << 16) + data;
458
for (n = parser->local.usage_minimum; n <= data; n++)
459
if (hid_add_usage(parser, n)) {
460
dbg("hid_add_usage failed\n");
467
dbg("unknown local item tag 0x%x", item->tag);
474
* Process a main item.
477
static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
482
data = item_udata(item);
485
case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
486
ret = open_collection(parser, data & 0xff);
488
case HID_MAIN_ITEM_TAG_END_COLLECTION:
489
ret = close_collection(parser);
491
case HID_MAIN_ITEM_TAG_INPUT:
492
ret = hid_add_field(parser, HID_INPUT_REPORT, data);
494
case HID_MAIN_ITEM_TAG_OUTPUT:
495
ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
497
case HID_MAIN_ITEM_TAG_FEATURE:
498
ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
501
dbg("unknown main item tag 0x%x", item->tag);
505
memset(&parser->local, 0, sizeof(parser->local)); /* Reset the local parser environment */
511
* Process a reserved item.
514
static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
516
dbg("reserved item type, tag 0x%x", item->tag);
521
* Free a report and all registered fields. The field->usage and
522
* field->value table's are allocated behind the field, so we need
523
* only to free(field) itself.
526
static void hid_free_report(struct hid_report *report)
530
for (n = 0; n < report->maxfield; n++)
531
kfree(report->field[n]);
536
* Free a device structure, all reports, and all fields.
539
static void hid_free_device(struct hid_device *device)
545
for (i = 0; i < HID_REPORT_TYPES; i++) {
546
struct hid_report_enum *report_enum = device->report_enum + i;
548
for (j = 0; j < 256; j++) {
549
struct hid_report *report = report_enum->report_id_hash[j];
551
hid_free_report(report);
556
kfree(device->rdesc);
561
* Fetch a report description item from the data stream. We support long
562
* items, though they are not used yet.
565
static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
569
if ((end - start) <= 0)
574
item->type = (b >> 2) & 3;
575
item->tag = (b >> 4) & 15;
577
if (item->tag == HID_ITEM_TAG_LONG) {
579
item->format = HID_ITEM_FORMAT_LONG;
581
if ((end - start) < 2)
584
item->size = *start++;
585
item->tag = *start++;
587
if ((end - start) < item->size)
590
item->data.longdata = start;
595
item->format = HID_ITEM_FORMAT_SHORT;
598
switch (item->size) {
604
if ((end - start) < 1)
606
item->data.u8 = *start++;
610
if ((end - start) < 2)
612
item->data.u16 = le16_to_cpu(get_unaligned((__u16*)start));
613
start = (__u8 *)((__u16 *)start + 1);
618
if ((end - start) < 4)
620
item->data.u32 = le32_to_cpu(get_unaligned((__u32*)start));
621
start = (__u8 *)((__u32 *)start + 1);
629
* Parse a report description into a hid_device structure. Reports are
630
* enumerated, fields are attached to these reports.
633
static struct hid_device *hid_parse_report(__u8 *start, unsigned size)
635
struct hid_device *device;
636
struct hid_parser *parser;
637
struct hid_item item;
640
static int (*dispatch_type[])(struct hid_parser *parser,
641
struct hid_item *item) = {
648
if (!(device = kmalloc(sizeof(struct hid_device), GFP_KERNEL)))
650
memset(device, 0, sizeof(struct hid_device));
652
if (!(device->collection =kmalloc(sizeof(struct hid_collection) *
653
HID_DEFAULT_NUM_COLLECTIONS, GFP_KERNEL))) {
657
memset(device->collection, 0, sizeof(struct hid_collection) *
658
HID_DEFAULT_NUM_COLLECTIONS);
659
device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
661
for (i = 0; i < HID_REPORT_TYPES; i++)
662
INIT_LIST_HEAD(&device->report_enum[i].report_list);
664
if (!(device->rdesc = (__u8 *)kmalloc(size, GFP_KERNEL))) {
665
kfree(device->collection);
669
memcpy(device->rdesc, start, size);
670
device->rsize = size;
672
if (!(parser = kmalloc(sizeof(struct hid_parser), GFP_KERNEL))) {
673
kfree(device->rdesc);
674
kfree(device->collection);
678
memset(parser, 0, sizeof(struct hid_parser));
679
parser->device = device;
682
while ((start = fetch_item(start, end, &item)) != 0) {
684
if (item.format != HID_ITEM_FORMAT_SHORT) {
685
dbg("unexpected long global item");
686
kfree(device->collection);
687
hid_free_device(device);
692
if (dispatch_type[item.type](parser, &item)) {
693
dbg("item %u %u %u %u parsing failed\n",
694
item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
695
kfree(device->collection);
696
hid_free_device(device);
702
if (parser->collection_stack_ptr) {
703
dbg("unbalanced collection at end of report description");
704
kfree(device->collection);
705
hid_free_device(device);
709
if (parser->local.delimiter_depth) {
710
dbg("unbalanced delimiter at end of report description");
711
kfree(device->collection);
712
hid_free_device(device);
721
dbg("item fetching failed at offset %d\n", (int)(end - start));
722
kfree(device->collection);
723
hid_free_device(device);
729
* Convert a signed n-bit integer to signed 32-bit integer. Common
730
* cases are done through the compiler, the screwed things has to be
734
static __inline__ __s32 snto32(__u32 value, unsigned n)
737
case 8: return ((__s8)value);
738
case 16: return ((__s16)value);
739
case 32: return ((__s32)value);
741
return value & (1 << (n - 1)) ? value | (-1 << n) : value;
745
* Convert a signed 32-bit integer to a signed n-bit integer.
748
static __inline__ __u32 s32ton(__s32 value, unsigned n)
750
__s32 a = value >> (n - 1);
752
return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
753
return value & ((1 << n) - 1);
757
* Extract/implement a data field from/to a report.
760
static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
762
report += (offset >> 5) << 2; offset &= 31;
763
return (le64_to_cpu(get_unaligned((__u64*)report)) >> offset) & ((1 << n) - 1);
766
static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
768
report += (offset >> 5) << 2; offset &= 31;
769
put_unaligned((get_unaligned((__u64*)report)
770
& cpu_to_le64(~((((__u64) 1 << n) - 1) << offset)))
771
| cpu_to_le64((__u64)value << offset), (__u64*)report);
775
* Search an array for a value.
778
static __inline__ int search(__s32 *array, __s32 value, unsigned n)
781
if (*array++ == value)
787
static void hid_process_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, struct pt_regs *regs)
789
hid_dump_input(usage, value);
790
if (hid->claimed & HID_CLAIMED_INPUT)
791
hidinput_hid_event(hid, field, usage, value, regs);
792
if (hid->claimed & HID_CLAIMED_HIDDEV)
793
hiddev_hid_event(hid, field, usage, value, regs);
797
* Analyse a received field, and fetch the data from it. The field
798
* content is stored for next report processing (we do differential
799
* reporting to the layer).
802
static void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, struct pt_regs *regs)
805
unsigned count = field->report_count;
806
unsigned offset = field->report_offset;
807
unsigned size = field->report_size;
808
__s32 min = field->logical_minimum;
809
__s32 max = field->logical_maximum;
810
__s32 value[count]; /* WARNING: gcc specific */
812
for (n = 0; n < count; n++) {
814
value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
815
extract(data, offset + n * size, size);
817
if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
818
&& value[n] >= min && value[n] <= max
819
&& field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
823
for (n = 0; n < count; n++) {
825
if (HID_MAIN_ITEM_VARIABLE & field->flags) {
827
if (field->flags & HID_MAIN_ITEM_RELATIVE) {
831
if (value[n] == field->value[n])
834
hid_process_event(hid, field, &field->usage[n], value[n], regs);
838
if (field->value[n] >= min && field->value[n] <= max
839
&& field->usage[field->value[n] - min].hid
840
&& search(value, field->value[n], count))
841
hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, regs);
843
if (value[n] >= min && value[n] <= max
844
&& field->usage[value[n] - min].hid
845
&& search(field->value, value[n], count))
846
hid_process_event(hid, field, &field->usage[value[n] - min], 1, regs);
849
memcpy(field->value, value, count * sizeof(__s32));
852
static int hid_input_report(int type, struct urb *urb, struct pt_regs *regs)
854
struct hid_device *hid = urb->context;
855
struct hid_report_enum *report_enum = hid->report_enum + type;
856
u8 *data = urb->transfer_buffer;
857
int len = urb->actual_length;
858
struct hid_report *report;
867
printk(KERN_DEBUG __FILE__ ": report (size %u) (%snumbered)\n", len, report_enum->numbered ? "" : "un");
870
n = 0; /* Normally report number is 0 */
871
if (report_enum->numbered) { /* Device uses numbered reports, data[0] is report number */
879
printk(KERN_DEBUG __FILE__ ": report %d (size %u) = ", n, len);
880
for (i = 0; i < len; i++)
881
printk(" %02x", data[i]);
886
if (!(report = report_enum->report_id_hash[n])) {
887
dbg("undefined report_id %d received", n);
891
size = ((report->size - 1) >> 3) + 1;
894
dbg("report %d is too short, (%d < %d)", report->id, len, size);
898
if (hid->claimed & HID_CLAIMED_HIDDEV)
899
hiddev_report_event(hid, report);
901
for (n = 0; n < report->maxfield; n++)
902
hid_input_field(hid, report->field[n], data, regs);
904
if (hid->claimed & HID_CLAIMED_INPUT)
905
hidinput_report_event(hid, report);
911
* Input interrupt completion handler.
914
static void hid_irq_in(struct urb *urb, struct pt_regs *regs)
916
struct hid_device *hid = urb->context;
919
switch (urb->status) {
920
case 0: /* success */
921
hid_input_report(HID_INPUT_REPORT, urb, regs);
923
case -ECONNRESET: /* unlink */
928
dbg("nonzero status in input irq %d", urb->status);
931
status = usb_submit_urb (urb, SLAB_ATOMIC);
933
err ("can't resubmit intr, %s-%s/input%d, status %d",
934
hid->dev->bus->bus_name, hid->dev->devpath,
939
* Output the field into the report.
942
static void hid_output_field(struct hid_field *field, __u8 *data)
944
unsigned count = field->report_count;
945
unsigned offset = field->report_offset;
946
unsigned size = field->report_size;
949
for (n = 0; n < count; n++) {
950
if (field->logical_minimum < 0) /* signed values */
951
implement(data, offset + n * size, size, s32ton(field->value[n], size));
952
else /* unsigned values */
953
implement(data, offset + n * size, size, field->value[n]);
961
void hid_output_report(struct hid_report *report, __u8 *data)
966
*data++ = report->id;
968
for (n = 0; n < report->maxfield; n++)
969
hid_output_field(report->field[n], data);
973
* Set a field value. The report this field belongs to has to be
974
* created and transferred to the device, to set this value in the
978
int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
980
unsigned size = field->report_size;
982
hid_dump_input(field->usage + offset, value);
984
if (offset >= field->report_count) {
985
dbg("offset (%d) exceeds report_count (%d)", offset, field->report_count);
986
hid_dump_field(field, 8);
989
if (field->logical_minimum < 0) {
990
if (value != snto32(s32ton(value, size), size)) {
991
dbg("value %d is out of range", value);
995
field->value[offset] = value;
999
int hid_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1001
struct hid_report_enum *report_enum = hid->report_enum + HID_OUTPUT_REPORT;
1002
struct list_head *list = report_enum->report_list.next;
1005
while (list != &report_enum->report_list) {
1006
struct hid_report *report = (struct hid_report *) list;
1008
for (i = 0; i < report->maxfield; i++) {
1009
*field = report->field[i];
1010
for (j = 0; j < (*field)->maxusage; j++)
1011
if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1019
* Find a report with a specified HID usage.
1022
int hid_find_report_by_usage(struct hid_device *hid, __u32 wanted_usage, struct hid_report **report, int type)
1024
struct hid_report_enum *report_enum = hid->report_enum + type;
1025
struct list_head *list = report_enum->report_list.next;
1028
while (list != &report_enum->report_list) {
1029
*report = (struct hid_report *) list;
1031
for (i = 0; i < (*report)->maxfield; i++) {
1032
struct hid_field *field = (*report)->field[i];
1033
for (j = 0; j < field->maxusage; j++)
1034
if (field->logical == wanted_usage)
1041
int hid_find_field_in_report(struct hid_report *report, __u32 wanted_usage, struct hid_field **field)
1045
for (i = 0; i < report->maxfield; i++) {
1046
*field = report->field[i];
1047
for (j = 0; j < (*field)->maxusage; j++)
1048
if ((*field)->usage[j].hid == wanted_usage)
1055
static int hid_submit_out(struct hid_device *hid)
1057
struct hid_report *report;
1059
report = hid->out[hid->outtail];
1061
hid_output_report(report, hid->outbuf);
1062
hid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1063
hid->urbout->dev = hid->dev;
1065
dbg("submitting out urb");
1067
if (usb_submit_urb(hid->urbout, GFP_ATOMIC)) {
1068
err("usb_submit_urb(out) failed");
1075
static int hid_submit_ctrl(struct hid_device *hid)
1077
struct hid_report *report;
1080
report = hid->ctrl[hid->ctrltail].report;
1081
dir = hid->ctrl[hid->ctrltail].dir;
1083
if (dir == USB_DIR_OUT)
1084
hid_output_report(report, hid->ctrlbuf);
1086
hid->urbctrl->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1087
hid->urbctrl->pipe = (dir == USB_DIR_OUT) ? usb_sndctrlpipe(hid->dev, 0) : usb_rcvctrlpipe(hid->dev, 0);
1088
hid->urbctrl->dev = hid->dev;
1090
hid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
1091
hid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
1092
hid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
1093
hid->cr->wIndex = cpu_to_le16(hid->ifnum);
1094
hid->cr->wLength = cpu_to_le16(hid->urbctrl->transfer_buffer_length);
1096
dbg("submitting ctrl urb");
1098
if (usb_submit_urb(hid->urbctrl, GFP_ATOMIC)) {
1099
err("usb_submit_urb(ctrl) failed");
1107
* Output interrupt completion handler.
1110
static void hid_irq_out(struct urb *urb, struct pt_regs *regs)
1112
struct hid_device *hid = urb->context;
1113
unsigned long flags;
1116
warn("output irq status %d received", urb->status);
1118
spin_lock_irqsave(&hid->outlock, flags);
1120
hid->outtail = (hid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1);
1122
if (hid->outhead != hid->outtail) {
1123
hid_submit_out(hid);
1124
spin_unlock_irqrestore(&hid->outlock, flags);
1128
clear_bit(HID_OUT_RUNNING, &hid->iofl);
1130
spin_unlock_irqrestore(&hid->outlock, flags);
1132
wake_up(&hid->wait);
1136
* Control pipe completion handler.
1139
static void hid_ctrl(struct urb *urb, struct pt_regs *regs)
1141
struct hid_device *hid = urb->context;
1142
unsigned long flags;
1145
warn("ctrl urb status %d received", urb->status);
1147
spin_lock_irqsave(&hid->ctrllock, flags);
1149
if (hid->ctrl[hid->ctrltail].dir == USB_DIR_IN)
1150
hid_input_report(hid->ctrl[hid->ctrltail].report->type, urb, regs);
1152
hid->ctrltail = (hid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
1154
if (hid->ctrlhead != hid->ctrltail) {
1155
hid_submit_ctrl(hid);
1156
spin_unlock_irqrestore(&hid->ctrllock, flags);
1160
clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1162
spin_unlock_irqrestore(&hid->ctrllock, flags);
1164
wake_up(&hid->wait);
1167
void hid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
1170
unsigned long flags;
1172
if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN)
1175
if (hid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) {
1177
spin_lock_irqsave(&hid->outlock, flags);
1179
if ((head = (hid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == hid->outtail) {
1180
spin_unlock_irqrestore(&hid->outlock, flags);
1181
warn("output queue full");
1185
hid->out[hid->outhead] = report;
1186
hid->outhead = head;
1188
if (!test_and_set_bit(HID_OUT_RUNNING, &hid->iofl))
1189
hid_submit_out(hid);
1191
spin_unlock_irqrestore(&hid->outlock, flags);
1195
spin_lock_irqsave(&hid->ctrllock, flags);
1197
if ((head = (hid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == hid->ctrltail) {
1198
spin_unlock_irqrestore(&hid->ctrllock, flags);
1199
warn("control queue full");
1203
hid->ctrl[hid->ctrlhead].report = report;
1204
hid->ctrl[hid->ctrlhead].dir = dir;
1205
hid->ctrlhead = head;
1207
if (!test_and_set_bit(HID_CTRL_RUNNING, &hid->iofl))
1208
hid_submit_ctrl(hid);
1210
spin_unlock_irqrestore(&hid->ctrllock, flags);
1213
int hid_wait_io(struct hid_device *hid)
1215
DECLARE_WAITQUEUE(wait, current);
1216
int timeout = 10*HZ;
1218
set_current_state(TASK_UNINTERRUPTIBLE);
1219
add_wait_queue(&hid->wait, &wait);
1221
while (timeout && (test_bit(HID_CTRL_RUNNING, &hid->iofl) ||
1222
test_bit(HID_OUT_RUNNING, &hid->iofl)))
1223
timeout = schedule_timeout(timeout);
1225
set_current_state(TASK_RUNNING);
1226
remove_wait_queue(&hid->wait, &wait);
1229
dbg("timeout waiting for ctrl or out queue to clear");
1236
static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
1237
unsigned char type, void *buf, int size)
1239
return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
1240
USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
1241
(type << 8), ifnum, buf, size, HZ * USB_CTRL_GET_TIMEOUT);
1244
int hid_open(struct hid_device *hid)
1249
hid->urbin->dev = hid->dev;
1251
if (usb_submit_urb(hid->urbin, GFP_KERNEL))
1257
void hid_close(struct hid_device *hid)
1260
usb_unlink_urb(hid->urbin);
1264
* Initialize all reports
1267
void hid_init_reports(struct hid_device *hid)
1269
struct hid_report_enum *report_enum;
1270
struct hid_report *report;
1271
struct list_head *list;
1275
report_enum = hid->report_enum + HID_INPUT_REPORT;
1276
list = report_enum->report_list.next;
1277
while (list != &report_enum->report_list) {
1278
report = (struct hid_report *) list;
1279
hid_submit_report(hid, report, USB_DIR_IN);
1283
report_enum = hid->report_enum + HID_FEATURE_REPORT;
1284
list = report_enum->report_list.next;
1285
while (list != &report_enum->report_list) {
1286
report = (struct hid_report *) list;
1287
hid_submit_report(hid, report, USB_DIR_IN);
1292
while ((ret = hid_wait_io(hid))) {
1294
if (test_bit(HID_CTRL_RUNNING, &hid->iofl))
1295
usb_unlink_urb(hid->urbctrl);
1296
if (test_bit(HID_OUT_RUNNING, &hid->iofl))
1297
usb_unlink_urb(hid->urbout);
1301
warn("timeout initializing reports\n");
1303
report_enum = hid->report_enum + HID_INPUT_REPORT;
1304
list = report_enum->report_list.next;
1305
while (list != &report_enum->report_list) {
1306
report = (struct hid_report *) list;
1307
len = ((report->size - 1) >> 3) + 1 + report_enum->numbered;
1308
if (len > hid->urbin->transfer_buffer_length)
1309
hid->urbin->transfer_buffer_length = len < HID_BUFFER_SIZE ? len : HID_BUFFER_SIZE;
1310
usb_control_msg(hid->dev, usb_sndctrlpipe(hid->dev, 0),
1311
0x0a, USB_TYPE_CLASS | USB_RECIP_INTERFACE, report->id,
1312
hid->ifnum, NULL, 0, HZ * USB_CTRL_SET_TIMEOUT);
1317
#define USB_VENDOR_ID_WACOM 0x056a
1318
#define USB_DEVICE_ID_WACOM_PENPARTNER 0x0000
1319
#define USB_DEVICE_ID_WACOM_GRAPHIRE 0x0010
1320
#define USB_DEVICE_ID_WACOM_INTUOS 0x0020
1321
#define USB_DEVICE_ID_WACOM_PL 0x0030
1322
#define USB_DEVICE_ID_WACOM_INTUOS2 0x0040
1323
#define USB_DEVICE_ID_WACOM_VOLITO 0x0060
1324
#define USB_DEVICE_ID_WACOM_PTU 0x0003
1325
#define USB_DEVICE_ID_WACOM_INTUOS3 0x00B0
1327
#define USB_VENDOR_ID_KBGEAR 0x084e
1328
#define USB_DEVICE_ID_KBGEAR_JAMSTUDIO 0x1001
1330
#define USB_VENDOR_ID_AIPTEK 0x08ca
1331
#define USB_DEVICE_ID_AIPTEK_6000 0x0020
1333
#define USB_VENDOR_ID_GRIFFIN 0x077d
1334
#define USB_DEVICE_ID_POWERMATE 0x0410
1335
#define USB_DEVICE_ID_SOUNDKNOB 0x04AA
1337
#define USB_VENDOR_ID_ATEN 0x0557
1338
#define USB_DEVICE_ID_ATEN_UC100KM 0x2004
1339
#define USB_DEVICE_ID_ATEN_CS124U 0x2202
1340
#define USB_DEVICE_ID_ATEN_2PORTKVM 0x2204
1341
#define USB_DEVICE_ID_ATEN_4PORTKVM 0x2205
1342
#define USB_DEVICE_ID_ATEN_4PORTKVMC 0x2208
1344
#define USB_VENDOR_ID_TOPMAX 0x0663
1345
#define USB_DEVICE_ID_TOPMAX_COBRAPAD 0x0103
1347
#define USB_VENDOR_ID_HAPP 0x078b
1348
#define USB_DEVICE_ID_UGCI_DRIVING 0x0010
1349
#define USB_DEVICE_ID_UGCI_FLYING 0x0020
1350
#define USB_DEVICE_ID_UGCI_FIGHTING 0x0030
1352
#define USB_VENDOR_ID_MGE 0x0463
1353
#define USB_DEVICE_ID_MGE_UPS 0xffff
1354
#define USB_DEVICE_ID_MGE_UPS1 0x0001
1356
#define USB_VENDOR_ID_ONTRAK 0x0a07
1357
#define USB_DEVICE_ID_ONTRAK_ADU100 0x0064
1359
#define USB_VENDOR_ID_TANGTOP 0x0d3d
1360
#define USB_DEVICE_ID_TANGTOP_USBPS2 0x0001
1362
#define USB_VENDOR_ID_ESSENTIAL_REALITY 0x0d7f
1363
#define USB_DEVICE_ID_ESSENTIAL_REALITY_P5 0x0100
1365
#define USB_VENDOR_ID_A4TECH 0x09DA
1366
#define USB_DEVICE_ID_A4TECH_WCP32PU 0x0006
1368
#define USB_VENDOR_ID_CYPRESS 0x04b4
1369
#define USB_DEVICE_ID_CYPRESS_MOUSE 0x0001
1371
#define USB_VENDOR_ID_BERKSHIRE 0x0c98
1372
#define USB_DEVICE_ID_BERKSHIRE_PCWD 0x1140
1374
#define USB_VENDOR_ID_ALPS 0x0433
1375
#define USB_DEVICE_ID_IBM_GAMEPAD 0x1101
1377
#define USB_VENDOR_ID_SAITEK 0x06a3
1378
#define USB_DEVICE_ID_SAITEK_RUMBLEPAD 0xff17
1380
struct hid_blacklist {
1384
} hid_blacklist[] = {
1386
{ USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_6000, HID_QUIRK_IGNORE },
1387
{ USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD, HID_QUIRK_IGNORE },
1388
{ USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5, HID_QUIRK_IGNORE },
1389
{ USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO, HID_QUIRK_IGNORE },
1390
{ USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE, HID_QUIRK_IGNORE },
1391
{ USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB, HID_QUIRK_IGNORE },
1392
{ USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_IGNORE },
1393
{ USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1, HID_QUIRK_IGNORE },
1395
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100, HID_QUIRK_IGNORE },
1396
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100, HID_QUIRK_IGNORE },
1397
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200, HID_QUIRK_IGNORE },
1398
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300, HID_QUIRK_IGNORE },
1399
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400, HID_QUIRK_IGNORE },
1400
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500, HID_QUIRK_IGNORE },
1402
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PENPARTNER, HID_QUIRK_IGNORE },
1403
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE, HID_QUIRK_IGNORE },
1404
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 1, HID_QUIRK_IGNORE },
1405
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 2, HID_QUIRK_IGNORE },
1406
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 3, HID_QUIRK_IGNORE },
1407
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 4, HID_QUIRK_IGNORE },
1408
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS, HID_QUIRK_IGNORE },
1409
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 1, HID_QUIRK_IGNORE },
1410
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 2, HID_QUIRK_IGNORE },
1411
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 3, HID_QUIRK_IGNORE },
1412
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 4, HID_QUIRK_IGNORE },
1413
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL, HID_QUIRK_IGNORE },
1414
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 1, HID_QUIRK_IGNORE },
1415
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 2, HID_QUIRK_IGNORE },
1416
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 3, HID_QUIRK_IGNORE },
1417
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 4, HID_QUIRK_IGNORE },
1418
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 5, HID_QUIRK_IGNORE },
1419
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2, HID_QUIRK_IGNORE },
1420
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 1, HID_QUIRK_IGNORE },
1421
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 2, HID_QUIRK_IGNORE },
1422
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 3, HID_QUIRK_IGNORE },
1423
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 4, HID_QUIRK_IGNORE },
1424
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO, HID_QUIRK_IGNORE },
1425
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PTU, HID_QUIRK_IGNORE },
1426
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3, HID_QUIRK_IGNORE },
1427
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3 + 1, HID_QUIRK_IGNORE },
1428
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3 + 2, HID_QUIRK_IGNORE },
1430
{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET },
1431
{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET },
1432
{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET },
1433
{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET },
1434
{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
1435
{ USB_VENDOR_ID_TANGTOP, USB_DEVICE_ID_TANGTOP_USBPS2, HID_QUIRK_NOGET },
1437
{ USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU, HID_QUIRK_2WHEEL_MOUSE_HACK_BACK },
1438
{ USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE, HID_QUIRK_2WHEEL_MOUSE_HACK_EXTRA },
1440
{ USB_VENDOR_ID_ALPS, USB_DEVICE_ID_IBM_GAMEPAD, HID_QUIRK_BADPAD },
1441
{ USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1442
{ USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1443
{ USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD | HID_QUIRK_MULTI_INPUT },
1444
{ USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RUMBLEPAD, HID_QUIRK_BADPAD },
1445
{ USB_VENDOR_ID_TOPMAX, USB_DEVICE_ID_TOPMAX_COBRAPAD, HID_QUIRK_BADPAD },
1450
static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
1452
if (!(hid->inbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->inbuf_dma)))
1454
if (!(hid->outbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->outbuf_dma)))
1456
if (!(hid->cr = usb_buffer_alloc(dev, sizeof(*(hid->cr)), SLAB_ATOMIC, &hid->cr_dma)))
1458
if (!(hid->ctrlbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->ctrlbuf_dma)))
1464
static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
1467
usb_buffer_free(dev, HID_BUFFER_SIZE, hid->inbuf, hid->inbuf_dma);
1469
usb_buffer_free(dev, HID_BUFFER_SIZE, hid->outbuf, hid->outbuf_dma);
1471
usb_buffer_free(dev, sizeof(*(hid->cr)), hid->cr, hid->cr_dma);
1473
usb_buffer_free(dev, HID_BUFFER_SIZE, hid->ctrlbuf, hid->ctrlbuf_dma);
1476
static struct hid_device *usb_hid_configure(struct usb_interface *intf)
1478
struct usb_host_interface *interface = intf->altsetting + intf->act_altsetting;
1479
struct usb_device *dev = interface_to_usbdev (intf);
1480
struct hid_descriptor *hdesc;
1481
struct hid_device *hid;
1482
unsigned quirks = 0, rsize = 0;
1486
for (n = 0; hid_blacklist[n].idVendor; n++)
1487
if ((hid_blacklist[n].idVendor == dev->descriptor.idVendor) &&
1488
(hid_blacklist[n].idProduct == dev->descriptor.idProduct))
1489
quirks = hid_blacklist[n].quirks;
1491
if (quirks & HID_QUIRK_IGNORE)
1494
if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) && ((!interface->desc.bNumEndpoints) ||
1495
usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) {
1496
dbg("class descriptor not present\n");
1500
for (n = 0; n < hdesc->bNumDescriptors; n++)
1501
if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT)
1502
rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
1504
if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
1505
dbg("weird size of report descriptor (%u)", rsize);
1509
if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) {
1510
dbg("couldn't allocate rdesc memory");
1514
if ((n = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, HID_DT_REPORT, rdesc, rsize)) < 0) {
1515
dbg("reading report descriptor failed");
1521
printk(KERN_DEBUG __FILE__ ": report descriptor (size %u, read %d) = ", rsize, n);
1522
for (n = 0; n < rsize; n++)
1523
printk(" %02x", (unsigned char) rdesc[n]);
1527
if (!(hid = hid_parse_report(rdesc, rsize))) {
1528
dbg("parsing report descriptor failed");
1534
hid->quirks = quirks;
1536
if (hid_alloc_buffers(dev, hid)) {
1537
hid_free_buffers(dev, hid);
1541
for (n = 0; n < interface->desc.bNumEndpoints; n++) {
1543
struct usb_endpoint_descriptor *endpoint;
1546
endpoint = &interface->endpoint[n].desc;
1547
if ((endpoint->bmAttributes & 3) != 3) /* Not an interrupt endpoint */
1550
if (endpoint->bEndpointAddress & USB_DIR_IN) {
1553
if (!(hid->urbin = usb_alloc_urb(0, GFP_KERNEL)))
1555
pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
1556
usb_fill_int_urb(hid->urbin, dev, pipe, hid->inbuf, 0,
1557
hid_irq_in, hid, endpoint->bInterval);
1558
hid->urbin->transfer_dma = hid->inbuf_dma;
1559
hid->urbin->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1563
if (!(hid->urbout = usb_alloc_urb(0, GFP_KERNEL)))
1565
pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress);
1566
usb_fill_int_urb(hid->urbout, dev, pipe, hid->outbuf, 0,
1567
hid_irq_out, hid, 1);
1568
hid->urbout->transfer_dma = hid->outbuf_dma;
1569
hid->urbout->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1574
err("couldn't find an input interrupt endpoint");
1578
init_waitqueue_head(&hid->wait);
1580
hid->outlock = SPIN_LOCK_UNLOCKED;
1581
hid->ctrllock = SPIN_LOCK_UNLOCKED;
1583
hid->version = le16_to_cpu(hdesc->bcdHID);
1584
hid->country = hdesc->bCountryCode;
1587
hid->ifnum = interface->desc.bInterfaceNumber;
1591
if (!(buf = kmalloc(64, GFP_KERNEL)))
1594
if (usb_string(dev, dev->descriptor.iManufacturer, buf, 64) > 0) {
1595
strcat(hid->name, buf);
1596
if (usb_string(dev, dev->descriptor.iProduct, buf, 64) > 0)
1597
snprintf(hid->name, 64, "%s %s", hid->name, buf);
1598
} else if (usb_string(dev, dev->descriptor.iProduct, buf, 128) > 0) {
1599
snprintf(hid->name, 128, "%s", buf);
1601
snprintf(hid->name, 128, "%04x:%04x", dev->descriptor.idVendor, dev->descriptor.idProduct);
1603
usb_make_path(dev, buf, 64);
1604
snprintf(hid->phys, 64, "%s/input%d", buf,
1605
intf->altsetting[0].desc.bInterfaceNumber);
1607
if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0)
1612
hid->urbctrl = usb_alloc_urb(0, GFP_KERNEL);
1615
usb_fill_control_urb(hid->urbctrl, dev, 0, (void *) hid->cr,
1616
hid->ctrlbuf, 1, hid_ctrl, hid);
1617
hid->urbctrl->setup_dma = hid->cr_dma;
1618
hid->urbctrl->transfer_dma = hid->ctrlbuf_dma;
1619
hid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP
1620
| URB_NO_SETUP_DMA_MAP);
1627
usb_free_urb(hid->urbin);
1629
usb_free_urb(hid->urbout);
1631
usb_free_urb(hid->urbctrl);
1632
hid_free_buffers(dev, hid);
1633
hid_free_device(hid);
1638
static void hid_disconnect(struct usb_interface *intf)
1640
struct hid_device *hid = usb_get_intfdata (intf);
1645
usb_set_intfdata(intf, NULL);
1646
usb_unlink_urb(hid->urbin);
1647
usb_unlink_urb(hid->urbout);
1648
usb_unlink_urb(hid->urbctrl);
1650
if (hid->claimed & HID_CLAIMED_INPUT)
1651
hidinput_disconnect(hid);
1652
if (hid->claimed & HID_CLAIMED_HIDDEV)
1653
hiddev_disconnect(hid);
1655
usb_free_urb(hid->urbin);
1656
usb_free_urb(hid->urbctrl);
1658
usb_free_urb(hid->urbout);
1660
hid_free_buffers(hid->dev, hid);
1661
hid_free_device(hid);
1664
static int hid_probe (struct usb_interface *intf, const struct usb_device_id *id)
1666
struct hid_device *hid;
1671
dbg("HID probe called for ifnum %d",
1672
intf->altsetting->desc.bInterfaceNumber);
1674
if (!(hid = usb_hid_configure(intf)))
1677
hid_init_reports(hid);
1678
hid_dump_device(hid);
1680
if (!hidinput_connect(hid))
1681
hid->claimed |= HID_CLAIMED_INPUT;
1682
if (!hiddev_connect(hid))
1683
hid->claimed |= HID_CLAIMED_HIDDEV;
1685
usb_set_intfdata(intf, hid);
1687
if (!hid->claimed) {
1688
printk ("HID device not claimed by input or hiddev\n");
1689
hid_disconnect(intf);
1695
if (hid->claimed & HID_CLAIMED_INPUT)
1697
if (hid->claimed == (HID_CLAIMED_INPUT | HID_CLAIMED_HIDDEV))
1699
if (hid->claimed & HID_CLAIMED_HIDDEV)
1700
printk("hiddev%d", hid->minor);
1703
for (i = 0; i < hid->maxcollection; i++) {
1704
if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
1705
(hid->collection[i].usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1706
(hid->collection[i].usage & 0xffff) < ARRAY_SIZE(hid_types)) {
1707
c = hid_types[hid->collection[i].usage & 0xffff];
1712
usb_make_path(interface_to_usbdev(intf), path, 63);
1714
printk(": USB HID v%x.%02x %s [%s] on %s\n",
1715
hid->version >> 8, hid->version & 0xff, c, hid->name, path);
1720
static struct usb_device_id hid_usb_ids [] = {
1721
{ .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1722
.bInterfaceClass = USB_INTERFACE_CLASS_HID },
1723
{ } /* Terminating entry */
1726
MODULE_DEVICE_TABLE (usb, hid_usb_ids);
1728
static struct usb_driver hid_driver = {
1729
.owner = THIS_MODULE,
1732
.disconnect = hid_disconnect,
1733
.id_table = hid_usb_ids,
1736
static int __init hid_init(void)
1739
retval = hiddev_init();
1741
goto hiddev_init_fail;
1742
retval = usb_register(&hid_driver);
1744
goto usb_register_fail;
1745
info(DRIVER_VERSION ":" DRIVER_DESC);
1754
static void __exit hid_exit(void)
1757
usb_deregister(&hid_driver);
1760
module_init(hid_init);
1761
module_exit(hid_exit);
1763
MODULE_AUTHOR(DRIVER_AUTHOR);
1764
MODULE_DESCRIPTION(DRIVER_DESC);
1765
MODULE_LICENSE(DRIVER_LICENSE);