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
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* under the terms of the GNU General Public License as published by the Free
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* Software Foundation; either version 2 of the License, or (at your option)
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#include <linux/module.h>
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#include <linux/slab.h>
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#include <linux/init.h>
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#include <linux/kernel.h>
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#include <linux/sched.h>
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#include <linux/list.h>
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#include <linux/smp_lock.h>
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#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 "v2.0-2.6.2-pc0.2"
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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"};
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* 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.
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static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
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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)
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+ 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++;
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* Close a collection.
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static int close_collection(struct hid_parser *parser)
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if (!parser->collection_stack_ptr) {
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dbg("collection stack underflow");
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parser->collection_stack_ptr--;
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* Climb up the stack, search for the specified collection type
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* and return the usage.
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static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
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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;
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return 0; /* we know nothing about this usage type */
184
* Add a usage to the temporary parser table.
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static int hid_add_usage(struct hid_parser *parser, unsigned usage)
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if (parser->local.usage_index >= HID_MAX_USAGES) {
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dbg("usage index exceeded");
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parser->local.usage[parser->local.usage_index] = usage;
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parser->local.collection_index[parser->local.usage_index] =
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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++;
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* Register a new field for this report.
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static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
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struct hid_report *report;
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struct hid_field *field;
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if (!(report = hid_register_report(parser->device, report_type, parser->global.report_id))) {
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dbg("hid_register_report failed");
218
if (parser->global.logical_maximum < parser->global.logical_minimum) {
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dbg("logical range invalid %d %d", parser->global.logical_minimum, parser->global.logical_maximum);
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usages = parser->local.usage_index;
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offset = report->size;
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report->size += parser->global.report_size * parser->global.report_count;
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return 0; /* ignore padding fields */
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if ((field = hid_register_field(report, usages, parser->global.report_count)) == NULL)
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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);
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for (i = 0; i < usages; i++) {
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field->usage[i].hid = parser->local.usage[i];
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field->usage[i].collection_index =
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parser->local.collection_index[i];
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field->maxusage = usages;
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field->flags = flags;
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field->report_offset = offset;
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field->report_type = report_type;
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field->report_size = parser->global.report_size;
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field->report_count = parser->global.report_count;
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field->logical_minimum = parser->global.logical_minimum;
250
field->logical_maximum = parser->global.logical_maximum;
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field->physical_minimum = parser->global.physical_minimum;
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field->physical_maximum = parser->global.physical_maximum;
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field->unit_exponent = parser->global.unit_exponent;
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field->unit = parser->global.unit;
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* Read data value from item.
263
static __inline__ __u32 item_udata(struct hid_item *item)
265
switch (item->size) {
266
case 1: return item->data.u8;
267
case 2: return item->data.u16;
268
case 4: return item->data.u32;
273
static __inline__ __s32 item_sdata(struct hid_item *item)
275
switch (item->size) {
276
case 1: return item->data.s8;
277
case 2: return item->data.s16;
278
case 4: return item->data.s32;
284
* Process a global item.
287
static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
291
case HID_GLOBAL_ITEM_TAG_PUSH:
293
if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
294
dbg("global enviroment stack overflow");
298
memcpy(parser->global_stack + parser->global_stack_ptr++,
299
&parser->global, sizeof(struct hid_global));
302
case HID_GLOBAL_ITEM_TAG_POP:
304
if (!parser->global_stack_ptr) {
305
dbg("global enviroment stack underflow");
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memcpy(&parser->global, parser->global_stack + --parser->global_stack_ptr,
310
sizeof(struct hid_global));
313
case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
314
parser->global.usage_page = item_udata(item);
317
case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
318
parser->global.logical_minimum = item_sdata(item);
321
case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
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if (parser->global.logical_minimum < 0)
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parser->global.logical_maximum = item_sdata(item);
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parser->global.logical_maximum = item_udata(item);
328
case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
329
parser->global.physical_minimum = item_sdata(item);
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case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
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if (parser->global.physical_minimum < 0)
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parser->global.physical_maximum = item_sdata(item);
336
parser->global.physical_maximum = item_udata(item);
339
case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
340
parser->global.unit_exponent = item_sdata(item);
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case HID_GLOBAL_ITEM_TAG_UNIT:
344
parser->global.unit = item_udata(item);
347
case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
348
if ((parser->global.report_size = item_udata(item)) > 32) {
349
dbg("invalid report_size %d", parser->global.report_size);
354
case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
355
if ((parser->global.report_count = item_udata(item)) > HID_MAX_USAGES) {
356
dbg("invalid report_count %d", parser->global.report_count);
361
case HID_GLOBAL_ITEM_TAG_REPORT_ID:
362
if ((parser->global.report_id = item_udata(item)) == 0) {
363
dbg("report_id 0 is invalid");
369
dbg("unknown global tag 0x%x", item->tag);
375
* Process a local item.
378
static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
383
if (item->size == 0) {
384
dbg("item data expected for local item");
388
data = item_udata(item);
392
case HID_LOCAL_ITEM_TAG_DELIMITER:
396
* We treat items before the first delimiter
397
* as global to all usage sets (branch 0).
398
* In the moment we process only these global
399
* items and the first delimiter set.
401
if (parser->local.delimiter_depth != 0) {
402
dbg("nested delimiters");
405
parser->local.delimiter_depth++;
406
parser->local.delimiter_branch++;
408
if (parser->local.delimiter_depth < 1) {
409
dbg("bogus close delimiter");
412
parser->local.delimiter_depth--;
416
case HID_LOCAL_ITEM_TAG_USAGE:
418
if (parser->local.delimiter_branch > 1) {
419
dbg("alternative usage ignored");
424
data = (parser->global.usage_page << 16) + data;
426
return hid_add_usage(parser, data);
428
case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:
430
if (parser->local.delimiter_branch > 1) {
431
dbg("alternative usage ignored");
436
data = (parser->global.usage_page << 16) + data;
438
parser->local.usage_minimum = data;
441
case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:
443
if (parser->local.delimiter_branch > 1) {
444
dbg("alternative usage ignored");
449
data = (parser->global.usage_page << 16) + data;
451
for (n = parser->local.usage_minimum; n <= data; n++)
452
if (hid_add_usage(parser, n)) {
453
dbg("hid_add_usage failed\n");
460
dbg("unknown local item tag 0x%x", item->tag);
467
* Process a main item.
470
static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
475
data = item_udata(item);
478
case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
479
ret = open_collection(parser, data & 0xff);
481
case HID_MAIN_ITEM_TAG_END_COLLECTION:
482
ret = close_collection(parser);
484
case HID_MAIN_ITEM_TAG_INPUT:
485
ret = hid_add_field(parser, HID_INPUT_REPORT, data);
487
case HID_MAIN_ITEM_TAG_OUTPUT:
488
ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
490
case HID_MAIN_ITEM_TAG_FEATURE:
491
ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
494
dbg("unknown main item tag 0x%x", item->tag);
498
memset(&parser->local, 0, sizeof(parser->local)); /* Reset the local parser environment */
504
* Process a reserved item.
507
static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
509
dbg("reserved item type, tag 0x%x", item->tag);
514
* Free a report and all registered fields. The field->usage and
515
* field->value table's are allocated behind the field, so we need
516
* only to free(field) itself.
519
static void hid_free_report(struct hid_report *report)
523
for (n = 0; n < report->maxfield; n++)
524
kfree(report->field[n]);
529
* Free a device structure, all reports, and all fields.
532
static void hid_free_device(struct hid_device *device)
538
for (i = 0; i < HID_REPORT_TYPES; i++) {
539
struct hid_report_enum *report_enum = device->report_enum + i;
541
for (j = 0; j < 256; j++) {
542
struct hid_report *report = report_enum->report_id_hash[j];
544
hid_free_report(report);
549
kfree(device->rdesc);
554
* Fetch a report description item from the data stream. We support long
555
* items, though they are not used yet.
558
static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
562
if ((end - start) <= 0)
567
item->type = (b >> 2) & 3;
568
item->tag = (b >> 4) & 15;
570
if (item->tag == HID_ITEM_TAG_LONG) {
572
item->format = HID_ITEM_FORMAT_LONG;
574
if ((end - start) < 2)
577
item->size = *start++;
578
item->tag = *start++;
580
if ((end - start) < item->size)
583
item->data.longdata = start;
588
item->format = HID_ITEM_FORMAT_SHORT;
591
switch (item->size) {
597
if ((end - start) < 1)
599
item->data.u8 = *start++;
603
if ((end - start) < 2)
605
item->data.u16 = le16_to_cpu(get_unaligned(((__u16*)start)++));
610
if ((end - start) < 4)
612
item->data.u32 = le32_to_cpu(get_unaligned(((__u32*)start)++));
620
* Parse a report description into a hid_device structure. Reports are
621
* enumerated, fields are attached to these reports.
624
static struct hid_device *hid_parse_report(__u8 *start, unsigned size)
626
struct hid_device *device;
627
struct hid_parser *parser;
628
struct hid_item item;
631
static int (*dispatch_type[])(struct hid_parser *parser,
632
struct hid_item *item) = {
639
if (!(device = kmalloc(sizeof(struct hid_device), GFP_KERNEL)))
641
memset(device, 0, sizeof(struct hid_device));
643
if (!(device->collection =kmalloc(sizeof(struct hid_collection) *
644
HID_DEFAULT_NUM_COLLECTIONS, GFP_KERNEL))) {
648
memset(device->collection, 0, sizeof(struct hid_collection) *
649
HID_DEFAULT_NUM_COLLECTIONS);
650
device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;
652
for (i = 0; i < HID_REPORT_TYPES; i++)
653
INIT_LIST_HEAD(&device->report_enum[i].report_list);
655
if (!(device->rdesc = (__u8 *)kmalloc(size, GFP_KERNEL))) {
656
kfree(device->collection);
660
memcpy(device->rdesc, start, size);
661
device->rsize = size;
663
if (!(parser = kmalloc(sizeof(struct hid_parser), GFP_KERNEL))) {
664
kfree(device->rdesc);
665
kfree(device->collection);
669
memset(parser, 0, sizeof(struct hid_parser));
670
parser->device = device;
673
while ((start = fetch_item(start, end, &item)) != 0) {
675
if (item.format != HID_ITEM_FORMAT_SHORT) {
676
dbg("unexpected long global item");
677
kfree(device->collection);
678
hid_free_device(device);
683
if (dispatch_type[item.type](parser, &item)) {
684
dbg("item %u %u %u %u parsing failed\n",
685
item.format, (unsigned)item.size, (unsigned)item.type, (unsigned)item.tag);
686
kfree(device->collection);
687
hid_free_device(device);
693
if (parser->collection_stack_ptr) {
694
dbg("unbalanced collection at end of report description");
695
kfree(device->collection);
696
hid_free_device(device);
700
if (parser->local.delimiter_depth) {
701
dbg("unbalanced delimiter at end of report description");
702
kfree(device->collection);
703
hid_free_device(device);
712
dbg("item fetching failed at offset %d\n", (int)(end - start));
713
kfree(device->collection);
714
hid_free_device(device);
720
* Convert a signed n-bit integer to signed 32-bit integer. Common
721
* cases are done through the compiler, the screwed things has to be
725
static __inline__ __s32 snto32(__u32 value, unsigned n)
728
case 8: return ((__s8)value);
729
case 16: return ((__s16)value);
730
case 32: return ((__s32)value);
732
return value & (1 << (n - 1)) ? value | (-1 << n) : value;
736
* Convert a signed 32-bit integer to a signed n-bit integer.
739
static __inline__ __u32 s32ton(__s32 value, unsigned n)
741
__s32 a = value >> (n - 1);
743
return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
744
return value & ((1 << n) - 1);
748
* Extract/implement a data field from/to a report.
751
static __inline__ __u32 extract(__u8 *report, unsigned offset, unsigned n)
753
report += (offset >> 5) << 2; offset &= 31;
754
return (le64_to_cpu(get_unaligned((__u64*)report)) >> offset) & ((1 << n) - 1);
757
static __inline__ void implement(__u8 *report, unsigned offset, unsigned n, __u32 value)
759
report += (offset >> 5) << 2; offset &= 31;
760
put_unaligned((get_unaligned((__u64*)report)
761
& cpu_to_le64(~((((__u64) 1 << n) - 1) << offset)))
762
| cpu_to_le64((__u64)value << offset), (__u64*)report);
766
* Search an array for a value.
769
static __inline__ int search(__s32 *array, __s32 value, unsigned n)
772
if (*array++ == value)
778
static void hid_process_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value, struct pt_regs *regs)
780
hid_dump_input(usage, value);
781
if (hid->claimed & HID_CLAIMED_INPUT)
782
hidinput_hid_event(hid, field, usage, value, regs);
783
if (hid->claimed & HID_CLAIMED_HIDDEV)
784
hiddev_hid_event(hid, field, usage, value, regs);
788
* Analyse a received field, and fetch the data from it. The field
789
* content is stored for next report processing (we do differential
790
* reporting to the layer).
793
static void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, struct pt_regs *regs)
796
unsigned count = field->report_count;
797
unsigned offset = field->report_offset;
798
unsigned size = field->report_size;
799
__s32 min = field->logical_minimum;
800
__s32 max = field->logical_maximum;
801
__s32 value[count]; /* WARNING: gcc specific */
803
for (n = 0; n < count; n++) {
805
value[n] = min < 0 ? snto32(extract(data, offset + n * size, size), size) :
806
extract(data, offset + n * size, size);
808
if (!(field->flags & HID_MAIN_ITEM_VARIABLE) /* Ignore report if ErrorRollOver */
809
&& value[n] >= min && value[n] <= max
810
&& field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
814
for (n = 0; n < count; n++) {
816
if (HID_MAIN_ITEM_VARIABLE & field->flags) {
818
if (field->flags & HID_MAIN_ITEM_RELATIVE) {
822
if (value[n] == field->value[n])
825
hid_process_event(hid, field, &field->usage[n], value[n], regs);
829
if (field->value[n] >= min && field->value[n] <= max
830
&& field->usage[field->value[n] - min].hid
831
&& search(value, field->value[n], count))
832
hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, regs);
834
if (value[n] >= min && value[n] <= max
835
&& field->usage[value[n] - min].hid
836
&& search(field->value, value[n], count))
837
hid_process_event(hid, field, &field->usage[value[n] - min], 1, regs);
840
memcpy(field->value, value, count * sizeof(__s32));
843
static int hid_input_report(int type, struct urb *urb, struct pt_regs *regs)
845
struct hid_device *hid = urb->context;
846
struct hid_report_enum *report_enum = hid->report_enum + type;
847
u8 *data = urb->transfer_buffer;
848
int len = urb->actual_length;
849
struct hid_report *report;
858
printk(KERN_DEBUG __FILE__ ": report (size %u) (%snumbered)\n", len, report_enum->numbered ? "" : "un");
861
n = 0; /* Normally report number is 0 */
862
if (report_enum->numbered) { /* Device uses numbered reports, data[0] is report number */
870
printk(KERN_DEBUG __FILE__ ": report %d (size %u) = ", n, len);
871
for (i = 0; i < len; i++)
872
printk(" %02x", data[i]);
877
if (!(report = report_enum->report_id_hash[n])) {
878
dbg("undefined report_id %d received", n);
882
size = ((report->size - 1) >> 3) + 1;
885
dbg("report %d is too short, (%d < %d)", report->id, len, size);
889
if (hid->claimed & HID_CLAIMED_HIDDEV)
890
hiddev_report_event(hid, report);
892
for (n = 0; n < report->maxfield; n++)
893
hid_input_field(hid, report->field[n], data, regs);
895
if (hid->claimed & HID_CLAIMED_INPUT)
896
hidinput_report_event(hid, report);
902
* Input interrupt completion handler.
905
static void hid_irq_in(struct urb *urb, struct pt_regs *regs)
907
struct hid_device *hid = urb->context;
910
switch (urb->status) {
911
case 0: /* success */
912
hid_input_report(HID_INPUT_REPORT, urb, regs);
914
case -ECONNRESET: /* unlink */
919
dbg("nonzero status in input irq %d", urb->status);
922
status = usb_submit_urb (urb, SLAB_ATOMIC);
924
err ("can't resubmit intr, %s-%s/input%d, status %d",
925
hid->dev->bus->bus_name, hid->dev->devpath,
930
* Output the field into the report.
933
static void hid_output_field(struct hid_field *field, __u8 *data)
935
unsigned count = field->report_count;
936
unsigned offset = field->report_offset;
937
unsigned size = field->report_size;
940
for (n = 0; n < count; n++) {
941
if (field->logical_minimum < 0) /* signed values */
942
implement(data, offset + n * size, size, s32ton(field->value[n], size));
943
else /* unsigned values */
944
implement(data, offset + n * size, size, field->value[n]);
952
void hid_output_report(struct hid_report *report, __u8 *data)
957
*data++ = report->id;
959
for (n = 0; n < report->maxfield; n++)
960
hid_output_field(report->field[n], data);
964
* Set a field value. The report this field belongs to has to be
965
* created and transferred to the device, to set this value in the
969
int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
971
unsigned size = field->report_size;
973
hid_dump_input(field->usage + offset, value);
975
if (offset >= field->report_count) {
976
dbg("offset (%d) exceeds report_count (%d)", offset, field->report_count);
977
hid_dump_field(field, 8);
980
if (field->logical_minimum < 0) {
981
if (value != snto32(s32ton(value, size), size)) {
982
dbg("value %d is out of range", value);
986
field->value[offset] = value;
990
int hid_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
992
struct hid_report_enum *report_enum = hid->report_enum + HID_OUTPUT_REPORT;
993
struct list_head *list = report_enum->report_list.next;
996
while (list != &report_enum->report_list) {
997
struct hid_report *report = (struct hid_report *) list;
999
for (i = 0; i < report->maxfield; i++) {
1000
*field = report->field[i];
1001
for (j = 0; j < (*field)->maxusage; j++)
1002
if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1010
* Find a report with a specified HID usage.
1013
int hid_find_report_by_usage(struct hid_device *hid, __u32 wanted_usage, struct hid_report **report, int type)
1015
struct hid_report_enum *report_enum = hid->report_enum + type;
1016
struct list_head *list = report_enum->report_list.next;
1019
while (list != &report_enum->report_list) {
1020
*report = (struct hid_report *) list;
1022
for (i = 0; i < (*report)->maxfield; i++) {
1023
struct hid_field *field = (*report)->field[i];
1024
for (j = 0; j < field->maxusage; j++)
1025
if (field->logical == wanted_usage)
1032
int hid_find_field_in_report(struct hid_report *report, __u32 wanted_usage, struct hid_field **field)
1036
for (i = 0; i < report->maxfield; i++) {
1037
*field = report->field[i];
1038
for (j = 0; j < (*field)->maxusage; j++)
1039
if ((*field)->usage[j].hid == wanted_usage)
1046
static int hid_submit_out(struct hid_device *hid)
1048
struct hid_report *report;
1050
report = hid->out[hid->outtail];
1052
hid_output_report(report, hid->outbuf);
1053
hid->urbout->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1054
hid->urbout->dev = hid->dev;
1056
dbg("submitting out urb");
1058
if (usb_submit_urb(hid->urbout, GFP_ATOMIC)) {
1059
err("usb_submit_urb(out) failed");
1066
static int hid_submit_ctrl(struct hid_device *hid)
1068
struct hid_report *report;
1071
report = hid->ctrl[hid->ctrltail].report;
1072
dir = hid->ctrl[hid->ctrltail].dir;
1074
if (dir == USB_DIR_OUT)
1075
hid_output_report(report, hid->ctrlbuf);
1077
hid->urbctrl->transfer_buffer_length = ((report->size - 1) >> 3) + 1 + (report->id > 0);
1078
hid->urbctrl->pipe = (dir == USB_DIR_OUT) ? usb_sndctrlpipe(hid->dev, 0) : usb_rcvctrlpipe(hid->dev, 0);
1079
hid->urbctrl->dev = hid->dev;
1081
hid->cr->bRequestType = USB_TYPE_CLASS | USB_RECIP_INTERFACE | dir;
1082
hid->cr->bRequest = (dir == USB_DIR_OUT) ? HID_REQ_SET_REPORT : HID_REQ_GET_REPORT;
1083
hid->cr->wValue = cpu_to_le16(((report->type + 1) << 8) | report->id);
1084
hid->cr->wIndex = cpu_to_le16(hid->ifnum);
1085
hid->cr->wLength = cpu_to_le16(hid->urbctrl->transfer_buffer_length);
1087
dbg("submitting ctrl urb");
1089
if (usb_submit_urb(hid->urbctrl, GFP_ATOMIC)) {
1090
err("usb_submit_urb(ctrl) failed");
1098
* Output interrupt completion handler.
1101
static void hid_irq_out(struct urb *urb, struct pt_regs *regs)
1103
struct hid_device *hid = urb->context;
1104
unsigned long flags;
1107
warn("output irq status %d received", urb->status);
1109
spin_lock_irqsave(&hid->outlock, flags);
1111
hid->outtail = (hid->outtail + 1) & (HID_OUTPUT_FIFO_SIZE - 1);
1113
if (hid->outhead != hid->outtail) {
1114
hid_submit_out(hid);
1115
spin_unlock_irqrestore(&hid->outlock, flags);
1119
clear_bit(HID_OUT_RUNNING, &hid->iofl);
1121
spin_unlock_irqrestore(&hid->outlock, flags);
1123
wake_up(&hid->wait);
1127
* Control pipe completion handler.
1130
static void hid_ctrl(struct urb *urb, struct pt_regs *regs)
1132
struct hid_device *hid = urb->context;
1133
unsigned long flags;
1136
warn("ctrl urb status %d received", urb->status);
1138
spin_lock_irqsave(&hid->ctrllock, flags);
1140
if (hid->ctrl[hid->ctrltail].dir == USB_DIR_IN)
1141
hid_input_report(hid->ctrl[hid->ctrltail].report->type, urb, regs);
1143
hid->ctrltail = (hid->ctrltail + 1) & (HID_CONTROL_FIFO_SIZE - 1);
1145
if (hid->ctrlhead != hid->ctrltail) {
1146
hid_submit_ctrl(hid);
1147
spin_unlock_irqrestore(&hid->ctrllock, flags);
1151
clear_bit(HID_CTRL_RUNNING, &hid->iofl);
1153
spin_unlock_irqrestore(&hid->ctrllock, flags);
1155
wake_up(&hid->wait);
1158
void hid_submit_report(struct hid_device *hid, struct hid_report *report, unsigned char dir)
1161
unsigned long flags;
1163
if ((hid->quirks & HID_QUIRK_NOGET) && dir == USB_DIR_IN)
1166
if (hid->urbout && dir == USB_DIR_OUT && report->type == HID_OUTPUT_REPORT) {
1168
spin_lock_irqsave(&hid->outlock, flags);
1170
if ((head = (hid->outhead + 1) & (HID_OUTPUT_FIFO_SIZE - 1)) == hid->outtail) {
1171
spin_unlock_irqrestore(&hid->outlock, flags);
1172
warn("output queue full");
1176
hid->out[hid->outhead] = report;
1177
hid->outhead = head;
1179
if (!test_and_set_bit(HID_OUT_RUNNING, &hid->iofl))
1180
hid_submit_out(hid);
1182
spin_unlock_irqrestore(&hid->outlock, flags);
1186
spin_lock_irqsave(&hid->ctrllock, flags);
1188
if ((head = (hid->ctrlhead + 1) & (HID_CONTROL_FIFO_SIZE - 1)) == hid->ctrltail) {
1189
spin_unlock_irqrestore(&hid->ctrllock, flags);
1190
warn("control queue full");
1194
hid->ctrl[hid->ctrlhead].report = report;
1195
hid->ctrl[hid->ctrlhead].dir = dir;
1196
hid->ctrlhead = head;
1198
if (!test_and_set_bit(HID_CTRL_RUNNING, &hid->iofl))
1199
hid_submit_ctrl(hid);
1201
spin_unlock_irqrestore(&hid->ctrllock, flags);
1204
int hid_wait_io(struct hid_device *hid)
1206
DECLARE_WAITQUEUE(wait, current);
1207
int timeout = 10*HZ;
1209
set_current_state(TASK_UNINTERRUPTIBLE);
1210
add_wait_queue(&hid->wait, &wait);
1212
while (timeout && (test_bit(HID_CTRL_RUNNING, &hid->iofl) ||
1213
test_bit(HID_OUT_RUNNING, &hid->iofl)))
1214
timeout = schedule_timeout(timeout);
1216
set_current_state(TASK_RUNNING);
1217
remove_wait_queue(&hid->wait, &wait);
1220
dbg("timeout waiting for ctrl or out queue to clear");
1227
static int hid_get_class_descriptor(struct usb_device *dev, int ifnum,
1228
unsigned char type, void *buf, int size)
1230
return usb_control_msg(dev, usb_rcvctrlpipe(dev, 0),
1231
USB_REQ_GET_DESCRIPTOR, USB_RECIP_INTERFACE | USB_DIR_IN,
1232
(type << 8), ifnum, buf, size, HZ * USB_CTRL_GET_TIMEOUT);
1235
int hid_open(struct hid_device *hid)
1240
hid->urbin->dev = hid->dev;
1242
if (usb_submit_urb(hid->urbin, GFP_KERNEL))
1248
void hid_close(struct hid_device *hid)
1251
usb_unlink_urb(hid->urbin);
1255
* Initialize all reports
1258
void hid_init_reports(struct hid_device *hid)
1260
struct hid_report_enum *report_enum;
1261
struct hid_report *report;
1262
struct list_head *list;
1266
report_enum = hid->report_enum + HID_INPUT_REPORT;
1267
list = report_enum->report_list.next;
1268
while (list != &report_enum->report_list) {
1269
report = (struct hid_report *) list;
1270
hid_submit_report(hid, report, USB_DIR_IN);
1274
report_enum = hid->report_enum + HID_FEATURE_REPORT;
1275
list = report_enum->report_list.next;
1276
while (list != &report_enum->report_list) {
1277
report = (struct hid_report *) list;
1278
hid_submit_report(hid, report, USB_DIR_IN);
1283
while ((ret = hid_wait_io(hid))) {
1285
if (test_bit(HID_CTRL_RUNNING, &hid->iofl))
1286
usb_unlink_urb(hid->urbctrl);
1287
if (test_bit(HID_OUT_RUNNING, &hid->iofl))
1288
usb_unlink_urb(hid->urbout);
1292
warn("timeout initializing reports\n");
1294
report_enum = hid->report_enum + HID_INPUT_REPORT;
1295
list = report_enum->report_list.next;
1296
while (list != &report_enum->report_list) {
1297
report = (struct hid_report *) list;
1298
len = ((report->size - 1) >> 3) + 1 + report_enum->numbered;
1299
if (len > hid->urbin->transfer_buffer_length)
1300
hid->urbin->transfer_buffer_length = len < HID_BUFFER_SIZE ? len : HID_BUFFER_SIZE;
1301
usb_control_msg(hid->dev, usb_sndctrlpipe(hid->dev, 0),
1302
0x0a, USB_TYPE_CLASS | USB_RECIP_INTERFACE, report->id,
1303
hid->ifnum, NULL, 0, HZ * USB_CTRL_SET_TIMEOUT);
1308
#define USB_VENDOR_ID_WACOM 0x056a
1309
#define USB_DEVICE_ID_WACOM_PENPARTNER 0x0000
1310
#define USB_DEVICE_ID_WACOM_GRAPHIRE 0x0010
1311
#define USB_DEVICE_ID_WACOM_INTUOS 0x0020
1312
#define USB_DEVICE_ID_WACOM_PL 0x0030
1313
#define USB_DEVICE_ID_WACOM_INTUOS2 0x0040
1314
#define USB_DEVICE_ID_WACOM_VOLITO 0x0060
1315
#define USB_DEVICE_ID_WACOM_PTU 0x0003
1316
#define USB_DEVICE_ID_WACOM_INTUOS3 0x00B0
1318
#define USB_VENDOR_ID_KBGEAR 0x084e
1319
#define USB_DEVICE_ID_KBGEAR_JAMSTUDIO 0x1001
1322
#define USB_VENDOR_ID_AIPTEK 0x08ca
1323
#define USB_DEVICE_ID_AIPTEK_6000 0x0020
1325
#define USB_VENDOR_ID_GRIFFIN 0x077d
1326
#define USB_DEVICE_ID_POWERMATE 0x0410
1327
#define USB_DEVICE_ID_SOUNDKNOB 0x04AA
1329
#define USB_VENDOR_ID_ATEN 0x0557
1330
#define USB_DEVICE_ID_ATEN_UC100KM 0x2004
1331
#define USB_DEVICE_ID_ATEN_CS124U 0x2202
1332
#define USB_DEVICE_ID_ATEN_2PORTKVM 0x2204
1333
#define USB_DEVICE_ID_ATEN_4PORTKVM 0x2205
1334
#define USB_DEVICE_ID_ATEN_4PORTKVMC 0x2208
1336
#define USB_VENDOR_ID_TOPMAX 0x0663
1337
#define USB_DEVICE_ID_TOPMAX_COBRAPAD 0x0103
1339
#define USB_VENDOR_ID_HAPP 0x078b
1340
#define USB_DEVICE_ID_UGCI_DRIVING 0x0010
1341
#define USB_DEVICE_ID_UGCI_FLYING 0x0020
1342
#define USB_DEVICE_ID_UGCI_FIGHTING 0x0030
1344
#define USB_VENDOR_ID_MGE 0x0463
1345
#define USB_DEVICE_ID_MGE_UPS 0xffff
1346
#define USB_DEVICE_ID_MGE_UPS1 0x0001
1348
#define USB_VENDOR_ID_ONTRAK 0x0a07
1349
#define USB_DEVICE_ID_ONTRAK_ADU100 0x0064
1351
#define USB_VENDOR_ID_TANGTOP 0x0d3d
1352
#define USB_DEVICE_ID_TANGTOP_USBPS2 0x0001
1354
#define USB_VENDOR_ID_ESSENTIAL_REALITY 0x0d7f
1355
#define USB_DEVICE_ID_ESSENTIAL_REALITY_P5 0x0100
1357
#define USB_VENDOR_ID_A4TECH 0x09DA
1358
#define USB_DEVICE_ID_A4TECH_WCP32PU 0x0006
1360
#define USB_VENDOR_ID_BERKSHIRE 0x0c98
1361
#define USB_DEVICE_ID_BERKSHIRE_PCWD 0x1140
1363
#define USB_VENDOR_ID_ALPS 0x0433
1364
#define USB_DEVICE_ID_IBM_GAMEPAD 0x1101
1366
struct hid_blacklist {
1370
} hid_blacklist[] = {
1371
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PENPARTNER, HID_QUIRK_IGNORE },
1372
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE, HID_QUIRK_IGNORE },
1373
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 1, HID_QUIRK_IGNORE },
1374
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 2, HID_QUIRK_IGNORE },
1375
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 3, HID_QUIRK_IGNORE },
1376
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_GRAPHIRE + 4, HID_QUIRK_IGNORE },
1377
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS, HID_QUIRK_IGNORE },
1378
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 1, HID_QUIRK_IGNORE },
1379
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 2, HID_QUIRK_IGNORE },
1380
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 3, HID_QUIRK_IGNORE },
1381
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS + 4, HID_QUIRK_IGNORE },
1382
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL, HID_QUIRK_IGNORE },
1383
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 1, HID_QUIRK_IGNORE },
1384
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 2, HID_QUIRK_IGNORE },
1385
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 3, HID_QUIRK_IGNORE },
1386
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 4, HID_QUIRK_IGNORE },
1387
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PL + 5, HID_QUIRK_IGNORE },
1388
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 1, HID_QUIRK_IGNORE },
1389
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 2, HID_QUIRK_IGNORE },
1390
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 3, HID_QUIRK_IGNORE },
1391
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 4, HID_QUIRK_IGNORE },
1392
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 5, HID_QUIRK_IGNORE },
1393
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS2 + 7, HID_QUIRK_IGNORE },
1394
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_VOLITO, HID_QUIRK_IGNORE },
1395
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_PTU, HID_QUIRK_IGNORE },
1396
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3, HID_QUIRK_IGNORE },
1397
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3 + 1, HID_QUIRK_IGNORE },
1398
{ USB_VENDOR_ID_WACOM, USB_DEVICE_ID_WACOM_INTUOS3 + 2, HID_QUIRK_IGNORE },
1399
{ USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO, HID_QUIRK_IGNORE },
1400
{ USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_6000, HID_QUIRK_IGNORE },
1401
{ USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE, HID_QUIRK_IGNORE },
1402
{ USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB, HID_QUIRK_IGNORE },
1403
{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_UC100KM, HID_QUIRK_NOGET },
1404
{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_CS124U, HID_QUIRK_NOGET },
1405
{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_2PORTKVM, HID_QUIRK_NOGET },
1406
{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVM, HID_QUIRK_NOGET },
1407
{ USB_VENDOR_ID_ATEN, USB_DEVICE_ID_ATEN_4PORTKVMC, HID_QUIRK_NOGET },
1408
{ USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS, HID_QUIRK_IGNORE },
1409
{ USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1, HID_QUIRK_IGNORE },
1410
{ USB_VENDOR_ID_TOPMAX, USB_DEVICE_ID_TOPMAX_COBRAPAD, HID_QUIRK_BADPAD },
1411
{ USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_DRIVING, HID_QUIRK_BADPAD|HID_QUIRK_MULTI_INPUT },
1412
{ USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FLYING, HID_QUIRK_BADPAD|HID_QUIRK_MULTI_INPUT },
1413
{ USB_VENDOR_ID_HAPP, USB_DEVICE_ID_UGCI_FIGHTING, HID_QUIRK_BADPAD|HID_QUIRK_MULTI_INPUT },
1414
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100, HID_QUIRK_IGNORE },
1415
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100, HID_QUIRK_IGNORE },
1416
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200, HID_QUIRK_IGNORE },
1417
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300, HID_QUIRK_IGNORE },
1418
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400, HID_QUIRK_IGNORE },
1419
{ USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500, HID_QUIRK_IGNORE },
1420
{ USB_VENDOR_ID_TANGTOP, USB_DEVICE_ID_TANGTOP_USBPS2, HID_QUIRK_NOGET },
1421
{ USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5, HID_QUIRK_IGNORE },
1422
{ USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU, HID_QUIRK_2WHEEL_MOUSE_HACK },
1423
{ USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD, HID_QUIRK_IGNORE },
1424
{ USB_VENDOR_ID_ALPS, USB_DEVICE_ID_IBM_GAMEPAD, HID_QUIRK_BADPAD },
1428
static int hid_alloc_buffers(struct usb_device *dev, struct hid_device *hid)
1430
if (!(hid->inbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->inbuf_dma)))
1432
if (!(hid->outbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->outbuf_dma)))
1434
if (!(hid->cr = usb_buffer_alloc(dev, sizeof(*(hid->cr)), SLAB_ATOMIC, &hid->cr_dma)))
1436
if (!(hid->ctrlbuf = usb_buffer_alloc(dev, HID_BUFFER_SIZE, SLAB_ATOMIC, &hid->ctrlbuf_dma)))
1442
static void hid_free_buffers(struct usb_device *dev, struct hid_device *hid)
1445
usb_buffer_free(dev, HID_BUFFER_SIZE, hid->inbuf, hid->inbuf_dma);
1447
usb_buffer_free(dev, HID_BUFFER_SIZE, hid->outbuf, hid->outbuf_dma);
1449
usb_buffer_free(dev, sizeof(*(hid->cr)), hid->cr, hid->cr_dma);
1451
usb_buffer_free(dev, HID_BUFFER_SIZE, hid->ctrlbuf, hid->ctrlbuf_dma);
1454
static struct hid_device *usb_hid_configure(struct usb_interface *intf)
1456
struct usb_host_interface *interface = intf->altsetting + intf->act_altsetting;
1457
struct usb_device *dev = interface_to_usbdev (intf);
1458
struct hid_descriptor *hdesc;
1459
struct hid_device *hid;
1460
unsigned quirks = 0, rsize = 0;
1464
for (n = 0; hid_blacklist[n].idVendor; n++)
1465
if ((hid_blacklist[n].idVendor == dev->descriptor.idVendor) &&
1466
(hid_blacklist[n].idProduct == dev->descriptor.idProduct))
1467
quirks = hid_blacklist[n].quirks;
1469
if (quirks & HID_QUIRK_IGNORE)
1472
if (usb_get_extra_descriptor(interface, HID_DT_HID, &hdesc) && ((!interface->desc.bNumEndpoints) ||
1473
usb_get_extra_descriptor(&interface->endpoint[0], HID_DT_HID, &hdesc))) {
1474
dbg("class descriptor not present\n");
1478
for (n = 0; n < hdesc->bNumDescriptors; n++)
1479
if (hdesc->desc[n].bDescriptorType == HID_DT_REPORT)
1480
rsize = le16_to_cpu(hdesc->desc[n].wDescriptorLength);
1482
if (!rsize || rsize > HID_MAX_DESCRIPTOR_SIZE) {
1483
dbg("weird size of report descriptor (%u)", rsize);
1487
if (!(rdesc = kmalloc(rsize, GFP_KERNEL))) {
1488
dbg("couldn't allocate rdesc memory");
1492
if ((n = hid_get_class_descriptor(dev, interface->desc.bInterfaceNumber, HID_DT_REPORT, rdesc, rsize)) < 0) {
1493
dbg("reading report descriptor failed");
1499
printk(KERN_DEBUG __FILE__ ": report descriptor (size %u, read %d) = ", rsize, n);
1500
for (n = 0; n < rsize; n++)
1501
printk(" %02x", (unsigned char) rdesc[n]);
1505
if (!(hid = hid_parse_report(rdesc, rsize))) {
1506
dbg("parsing report descriptor failed");
1512
hid->quirks = quirks;
1514
if (hid_alloc_buffers(dev, hid)) {
1515
hid_free_buffers(dev, hid);
1519
for (n = 0; n < interface->desc.bNumEndpoints; n++) {
1521
struct usb_endpoint_descriptor *endpoint;
1524
endpoint = &interface->endpoint[n].desc;
1525
if ((endpoint->bmAttributes & 3) != 3) /* Not an interrupt endpoint */
1528
if (endpoint->bEndpointAddress & USB_DIR_IN) {
1531
if (!(hid->urbin = usb_alloc_urb(0, GFP_KERNEL)))
1533
pipe = usb_rcvintpipe(dev, endpoint->bEndpointAddress);
1534
usb_fill_int_urb(hid->urbin, dev, pipe, hid->inbuf, 0,
1535
hid_irq_in, hid, endpoint->bInterval);
1536
hid->urbin->transfer_dma = hid->inbuf_dma;
1537
hid->urbin->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1541
if (!(hid->urbout = usb_alloc_urb(0, GFP_KERNEL)))
1543
pipe = usb_sndintpipe(dev, endpoint->bEndpointAddress);
1544
usb_fill_int_urb(hid->urbout, dev, pipe, hid->outbuf, 0,
1545
hid_irq_out, hid, 1);
1546
hid->urbout->transfer_dma = hid->outbuf_dma;
1547
hid->urbout->transfer_flags |= URB_NO_TRANSFER_DMA_MAP;
1552
err("couldn't find an input interrupt endpoint");
1556
init_waitqueue_head(&hid->wait);
1558
hid->outlock = SPIN_LOCK_UNLOCKED;
1559
hid->ctrllock = SPIN_LOCK_UNLOCKED;
1561
hid->version = le16_to_cpu(hdesc->bcdHID);
1562
hid->country = hdesc->bCountryCode;
1565
hid->ifnum = interface->desc.bInterfaceNumber;
1569
if (!(buf = kmalloc(64, GFP_KERNEL)))
1572
if (usb_string(dev, dev->descriptor.iManufacturer, buf, 64) > 0) {
1573
strcat(hid->name, buf);
1574
if (usb_string(dev, dev->descriptor.iProduct, buf, 64) > 0)
1575
snprintf(hid->name, 64, "%s %s", hid->name, buf);
1576
} else if (usb_string(dev, dev->descriptor.iProduct, buf, 128) > 0) {
1577
snprintf(hid->name, 128, "%s", buf);
1579
snprintf(hid->name, 128, "%04x:%04x", dev->descriptor.idVendor, dev->descriptor.idProduct);
1581
usb_make_path(dev, buf, 64);
1582
snprintf(hid->phys, 64, "%s/input%d", buf,
1583
intf->altsetting[0].desc.bInterfaceNumber);
1585
if (usb_string(dev, dev->descriptor.iSerialNumber, hid->uniq, 64) <= 0)
1590
hid->urbctrl = usb_alloc_urb(0, GFP_KERNEL);
1593
usb_fill_control_urb(hid->urbctrl, dev, 0, (void *) hid->cr,
1594
hid->ctrlbuf, 1, hid_ctrl, hid);
1595
hid->urbctrl->setup_dma = hid->cr_dma;
1596
hid->urbctrl->transfer_dma = hid->ctrlbuf_dma;
1597
hid->urbctrl->transfer_flags |= (URB_NO_TRANSFER_DMA_MAP
1598
| URB_NO_SETUP_DMA_MAP);
1605
usb_free_urb(hid->urbin);
1607
usb_free_urb(hid->urbout);
1609
usb_free_urb(hid->urbctrl);
1610
hid_free_buffers(dev, hid);
1611
hid_free_device(hid);
1616
static void hid_disconnect(struct usb_interface *intf)
1618
struct hid_device *hid = usb_get_intfdata (intf);
1623
usb_set_intfdata(intf, NULL);
1624
usb_unlink_urb(hid->urbin);
1625
usb_unlink_urb(hid->urbout);
1626
usb_unlink_urb(hid->urbctrl);
1628
if (hid->claimed & HID_CLAIMED_INPUT)
1629
hidinput_disconnect(hid);
1630
if (hid->claimed & HID_CLAIMED_HIDDEV)
1631
hiddev_disconnect(hid);
1633
usb_free_urb(hid->urbin);
1634
usb_free_urb(hid->urbctrl);
1636
usb_free_urb(hid->urbout);
1638
hid_free_buffers(hid->dev, hid);
1639
hid_free_device(hid);
1642
static int hid_probe (struct usb_interface *intf, const struct usb_device_id *id)
1644
struct hid_device *hid;
1649
dbg("HID probe called for ifnum %d",
1650
intf->altsetting->desc.bInterfaceNumber);
1652
if (!(hid = usb_hid_configure(intf)))
1655
hid_init_reports(hid);
1656
hid_dump_device(hid);
1658
if (!hidinput_connect(hid))
1659
hid->claimed |= HID_CLAIMED_INPUT;
1660
if (!hiddev_connect(hid))
1661
hid->claimed |= HID_CLAIMED_HIDDEV;
1663
usb_set_intfdata(intf, hid);
1665
if (!hid->claimed) {
1666
printk ("HID device not claimed by input or hiddev\n");
1667
hid_disconnect(intf);
1673
if (hid->claimed & HID_CLAIMED_INPUT)
1675
if (hid->claimed == (HID_CLAIMED_INPUT | HID_CLAIMED_HIDDEV))
1677
if (hid->claimed & HID_CLAIMED_HIDDEV)
1678
printk("hiddev%d", hid->minor);
1681
for (i = 0; i < hid->maxcollection; i++) {
1682
if (hid->collection[i].type == HID_COLLECTION_APPLICATION &&
1683
(hid->collection[i].usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
1684
(hid->collection[i].usage & 0xffff) < ARRAY_SIZE(hid_types)) {
1685
c = hid_types[hid->collection[i].usage & 0xffff];
1690
usb_make_path(interface_to_usbdev(intf), path, 63);
1692
printk(": USB HID v%x.%02x %s [%s] on %s\n",
1693
hid->version >> 8, hid->version & 0xff, c, hid->name, path);
1698
static struct usb_device_id hid_usb_ids [] = {
1699
{ .match_flags = USB_DEVICE_ID_MATCH_INT_CLASS,
1700
.bInterfaceClass = USB_INTERFACE_CLASS_HID },
1701
{ } /* Terminating entry */
1704
MODULE_DEVICE_TABLE (usb, hid_usb_ids);
1706
static struct usb_driver hid_driver = {
1707
.owner = THIS_MODULE,
1710
.disconnect = hid_disconnect,
1711
.id_table = hid_usb_ids,
1714
static int __init hid_init(void)
1717
retval = hiddev_init();
1719
goto hiddev_init_fail;
1720
retval = usb_register(&hid_driver);
1722
goto usb_register_fail;
1723
info(DRIVER_VERSION ":" DRIVER_DESC);
1732
static void __exit hid_exit(void)
1735
usb_deregister(&hid_driver);
1738
module_init(hid_init);
1739
module_exit(hid_exit);
1741
MODULE_AUTHOR(DRIVER_AUTHOR);
1742
MODULE_DESCRIPTION(DRIVER_DESC);
1743
MODULE_LICENSE(DRIVER_LICENSE);