/*
 *  HID support for Linux
 *
 *  Copyright (c) 1999 Andreas Gal
 *  Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz>
 *  Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc
 *  Copyright (c) 2006-2012 Jiri Kosina
 */

/*
 * This program is free software; you can redistribute it and/or modify it
 * under the terms of the GNU General Public License as published by the Free
 * Software Foundation; either version 2 of the License, or (at your option)
 * any later version.
 */

#define pr_fmt(fmt) KBUILD_MODNAME ": " fmt

#include <linux/module.h>
#include <linux/slab.h>
#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/list.h>
#include <linux/mm.h>
#include <linux/spinlock.h>
#include <asm/unaligned.h>
#include <asm/byteorder.h>
#include <linux/input.h>
#include <linux/wait.h>
#include <linux/vmalloc.h>
#include <linux/sched.h>
#include <linux/semaphore.h>

#include <linux/hid.h>
#include <linux/hiddev.h>
#include <linux/hid-debug.h>
#include <linux/hidraw.h>

#include "hid-ids.h"

/*
 * Version Information
 */

#define DRIVER_DESC "HID core driver"
#define DRIVER_LICENSE "GPL"

int hid_debug = 0;
module_param_named(debug, hid_debug, int, 0600);
MODULE_PARM_DESC(debug, "toggle HID debugging messages");
EXPORT_SYMBOL_GPL(hid_debug);

static int hid_ignore_special_drivers = 0;
module_param_named(ignore_special_drivers, hid_ignore_special_drivers, int, 0600);
MODULE_PARM_DESC(ignore_special_drivers, "Ignore any special drivers and handle all devices by generic driver");

/*
 * Register a new report for a device.
 */

struct hid_report *hid_register_report(struct hid_device *device, unsigned type, unsigned id)
{
        struct hid_report_enum *report_enum = device->report_enum + type;
        struct hid_report *report;

        if (id >= HID_MAX_IDS)
                return NULL;
        if (report_enum->report_id_hash[id])
                return report_enum->report_id_hash[id];

        report = kzalloc(sizeof(struct hid_report), GFP_KERNEL);
        if (!report)
                return NULL;

        if (id != 0)
                report_enum->numbered = 1;

        report->id = id;
        report->type = type;
        report->size = 0;
        report->device = device;
        report_enum->report_id_hash[id] = report;

        list_add_tail(&report->list, &report_enum->report_list);

        return report;
}
EXPORT_SYMBOL_GPL(hid_register_report);

/*
 * Register a new field for this report.
 */

static struct hid_field *hid_register_field(struct hid_report *report, unsigned usages, unsigned values)
{
        struct hid_field *field;

        if (report->maxfield == HID_MAX_FIELDS) {
                hid_err(report->device, "too many fields in report\n");
                return NULL;
        }

        field = kzalloc((sizeof(struct hid_field) +
                         usages * sizeof(struct hid_usage) +
                         values * sizeof(unsigned)), GFP_KERNEL);
        if (!field)
                return NULL;

        field->index = report->maxfield++;
        report->field[field->index] = field;
        field->usage = (struct hid_usage *)(field + 1);
        field->value = (s32 *)(field->usage + usages);
        field->report = report;

        return field;
}

/*
 * Open a collection. The type/usage is pushed on the stack.
 */

static int open_collection(struct hid_parser *parser, unsigned type)
{
        struct hid_collection *collection;
        unsigned usage;

        usage = parser->local.usage[0];

        if (parser->collection_stack_ptr == HID_COLLECTION_STACK_SIZE) {
                hid_err(parser->device, "collection stack overflow\n");
                return -EINVAL;
        }

        if (parser->device->maxcollection == parser->device->collection_size) {
                collection = kmalloc(sizeof(struct hid_collection) *
                                parser->device->collection_size * 2, GFP_KERNEL);
                if (collection == NULL) {
                        hid_err(parser->device, "failed to reallocate collection array\n");
                        return -ENOMEM;
                }
                memcpy(collection, parser->device->collection,
                        sizeof(struct hid_collection) *
                        parser->device->collection_size);
                memset(collection + parser->device->collection_size, 0,
                        sizeof(struct hid_collection) *
                        parser->device->collection_size);
                kfree(parser->device->collection);
                parser->device->collection = collection;
                parser->device->collection_size *= 2;
        }

        parser->collection_stack[parser->collection_stack_ptr++] =
                parser->device->maxcollection;

        collection = parser->device->collection +
                parser->device->maxcollection++;
        collection->type = type;
        collection->usage = usage;
        collection->level = parser->collection_stack_ptr - 1;

        if (type == HID_COLLECTION_APPLICATION)
                parser->device->maxapplication++;

        return 0;
}

/*
 * Close a collection.
 */

static int close_collection(struct hid_parser *parser)
{
        if (!parser->collection_stack_ptr) {
                hid_err(parser->device, "collection stack underflow\n");
                return -EINVAL;
        }
        parser->collection_stack_ptr--;
        return 0;
}

/*
 * Climb up the stack, search for the specified collection type
 * and return the usage.
 */

static unsigned hid_lookup_collection(struct hid_parser *parser, unsigned type)
{
        struct hid_collection *collection = parser->device->collection;
        int n;

        for (n = parser->collection_stack_ptr - 1; n >= 0; n--) {
                unsigned index = parser->collection_stack[n];
                if (collection[index].type == type)
                        return collection[index].usage;
        }
        return 0; /* we know nothing about this usage type */
}

/*
 * Add a usage to the temporary parser table.
 */

static int hid_add_usage(struct hid_parser *parser, unsigned usage)
{
        if (parser->local.usage_index >= HID_MAX_USAGES) {
                hid_err(parser->device, "usage index exceeded\n");
                return -1;
        }
        parser->local.usage[parser->local.usage_index] = usage;
        parser->local.collection_index[parser->local.usage_index] =
                parser->collection_stack_ptr ?
                parser->collection_stack[parser->collection_stack_ptr - 1] : 0;
        parser->local.usage_index++;
        return 0;
}

/*
 * Register a new field for this report.
 */

static int hid_add_field(struct hid_parser *parser, unsigned report_type, unsigned flags)
{
        struct hid_report *report;
        struct hid_field *field;
        unsigned usages;
        unsigned offset;
        unsigned i;

        report = hid_register_report(parser->device, report_type, parser->global.report_id);
        if (!report) {
                hid_err(parser->device, "hid_register_report failed\n");
                return -1;
        }

        /* Handle both signed and unsigned cases properly */
        if ((parser->global.logical_minimum < 0 &&
                parser->global.logical_maximum <
                parser->global.logical_minimum) ||
                (parser->global.logical_minimum >= 0 &&
                (__u32)parser->global.logical_maximum <
                (__u32)parser->global.logical_minimum)) {
                dbg_hid("logical range invalid 0x%x 0x%x\n",
                        parser->global.logical_minimum,
                        parser->global.logical_maximum);
                return -1;
        }

        offset = report->size;
        report->size += parser->global.report_size * parser->global.report_count;

        if (!parser->local.usage_index) /* Ignore padding fields */
                return 0;

        usages = max_t(unsigned, parser->local.usage_index,
                                 parser->global.report_count);

        field = hid_register_field(report, usages, parser->global.report_count);
        if (!field)
                return 0;

        field->physical = hid_lookup_collection(parser, HID_COLLECTION_PHYSICAL);
        field->logical = hid_lookup_collection(parser, HID_COLLECTION_LOGICAL);
        field->application = hid_lookup_collection(parser, HID_COLLECTION_APPLICATION);

        for (i = 0; i < usages; i++) {
                unsigned j = i;
                /* Duplicate the last usage we parsed if we have excess values */
                if (i >= parser->local.usage_index)
                        j = parser->local.usage_index - 1;
                field->usage[i].hid = parser->local.usage[j];
                field->usage[i].collection_index =
                        parser->local.collection_index[j];
                field->usage[i].usage_index = i;
        }

        field->maxusage = usages;
        field->flags = flags;
        field->report_offset = offset;
        field->report_type = report_type;
        field->report_size = parser->global.report_size;
        field->report_count = parser->global.report_count;
        field->logical_minimum = parser->global.logical_minimum;
        field->logical_maximum = parser->global.logical_maximum;
        field->physical_minimum = parser->global.physical_minimum;
        field->physical_maximum = parser->global.physical_maximum;
        field->unit_exponent = parser->global.unit_exponent;
        field->unit = parser->global.unit;

        return 0;
}

/*
 * Read data value from item.
 */

static u32 item_udata(struct hid_item *item)
{
        switch (item->size) {
        case 1: return item->data.u8;
        case 2: return item->data.u16;
        case 4: return item->data.u32;
        }
        return 0;
}

static s32 item_sdata(struct hid_item *item)
{
        switch (item->size) {
        case 1: return item->data.s8;
        case 2: return item->data.s16;
        case 4: return item->data.s32;
        }
        return 0;
}

/*
 * Process a global item.
 */

static int hid_parser_global(struct hid_parser *parser, struct hid_item *item)
{
        __s32 raw_value;
        switch (item->tag) {
        case HID_GLOBAL_ITEM_TAG_PUSH:

                if (parser->global_stack_ptr == HID_GLOBAL_STACK_SIZE) {
                        hid_err(parser->device, "global environment stack overflow\n");
                        return -1;
                }

                memcpy(parser->global_stack + parser->global_stack_ptr++,
                        &parser->global, sizeof(struct hid_global));
                return 0;

        case HID_GLOBAL_ITEM_TAG_POP:

                if (!parser->global_stack_ptr) {
                        hid_err(parser->device, "global environment stack underflow\n");
                        return -1;
                }

                memcpy(&parser->global, parser->global_stack +
                        --parser->global_stack_ptr, sizeof(struct hid_global));
                return 0;

        case HID_GLOBAL_ITEM_TAG_USAGE_PAGE:
                parser->global.usage_page = item_udata(item);
                return 0;

        case HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM:
                parser->global.logical_minimum = item_sdata(item);
                return 0;

        case HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM:
                if (parser->global.logical_minimum < 0)
                        parser->global.logical_maximum = item_sdata(item);
                else
                        parser->global.logical_maximum = item_udata(item);
                return 0;

        case HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM:
                parser->global.physical_minimum = item_sdata(item);
                return 0;

        case HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM:
                if (parser->global.physical_minimum < 0)
                        parser->global.physical_maximum = item_sdata(item);
                else
                        parser->global.physical_maximum = item_udata(item);
                return 0;

        case HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT:
                /* Many devices provide unit exponent as a two's complement
                 * nibble due to the common misunderstanding of HID
                 * specification 1.11, 6.2.2.7 Global Items. Attempt to handle
                 * both this and the standard encoding. */
                raw_value = item_sdata(item);
                if (!(raw_value & 0xfffffff0))
                        parser->global.unit_exponent = hid_snto32(raw_value, 4);
                else
                        parser->global.unit_exponent = raw_value;
                return 0;

        case HID_GLOBAL_ITEM_TAG_UNIT:
                parser->global.unit = item_udata(item);
                return 0;

        case HID_GLOBAL_ITEM_TAG_REPORT_SIZE:
                parser->global.report_size = item_udata(item);
                if (parser->global.report_size > 128) {
                        hid_err(parser->device, "invalid report_size %d\n",
                                        parser->global.report_size);
                        return -1;
                }
                return 0;

        case HID_GLOBAL_ITEM_TAG_REPORT_COUNT:
                parser->global.report_count = item_udata(item);
                if (parser->global.report_count > HID_MAX_USAGES) {
                        hid_err(parser->device, "invalid report_count %d\n",
                                        parser->global.report_count);
                        return -1;
                }
                return 0;

        case HID_GLOBAL_ITEM_TAG_REPORT_ID:
                parser->global.report_id = item_udata(item);
                if (parser->global.report_id == 0 ||
                    parser->global.report_id >= HID_MAX_IDS) {
                        hid_err(parser->device, "report_id %u is invalid\n",
                                parser->global.report_id);
                        return -1;
                }
                return 0;

        default:
                hid_err(parser->device, "unknown global tag 0x%x\n", item->tag);
                return -1;
        }
}

/*
 * Process a local item.
 */

static int hid_parser_local(struct hid_parser *parser, struct hid_item *item)
{
        __u32 data;
        unsigned n;
        __u32 count;

        data = item_udata(item);

        switch (item->tag) {
        case HID_LOCAL_ITEM_TAG_DELIMITER:

                if (data) {
                        /*
                         * We treat items before the first delimiter
                         * as global to all usage sets (branch 0).
                         * In the moment we process only these global
                         * items and the first delimiter set.
                         */
                        if (parser->local.delimiter_depth != 0) {
                                hid_err(parser->device, "nested delimiters\n");
                                return -1;
                        }
                        parser->local.delimiter_depth++;
                        parser->local.delimiter_branch++;
                } else {
                        if (parser->local.delimiter_depth < 1) {
                                hid_err(parser->device, "bogus close delimiter\n");
                                return -1;
                        }
                        parser->local.delimiter_depth--;
                }
                return 0;

        case HID_LOCAL_ITEM_TAG_USAGE:

                if (parser->local.delimiter_branch > 1) {
                        dbg_hid("alternative usage ignored\n");
                        return 0;
                }

                if (item->size <= 2)
                        data = (parser->global.usage_page << 16) + data;

                return hid_add_usage(parser, data);

        case HID_LOCAL_ITEM_TAG_USAGE_MINIMUM:

                if (parser->local.delimiter_branch > 1) {
                        dbg_hid("alternative usage ignored\n");
                        return 0;
                }

                if (item->size <= 2)
                        data = (parser->global.usage_page << 16) + data;

                parser->local.usage_minimum = data;
                return 0;

        case HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM:

                if (parser->local.delimiter_branch > 1) {
                        dbg_hid("alternative usage ignored\n");
                        return 0;
                }

                if (item->size <= 2)
                        data = (parser->global.usage_page << 16) + data;

                count = data - parser->local.usage_minimum;
                if (count + parser->local.usage_index >= HID_MAX_USAGES) {
                        /*
                         * We do not warn if the name is not set, we are
                         * actually pre-scanning the device.
                         */
                        if (dev_name(&parser->device->dev))
                                hid_warn(parser->device,
                                         "ignoring exceeding usage max\n");
                        data = HID_MAX_USAGES - parser->local.usage_index +
                                parser->local.usage_minimum - 1;
                        if (data <= 0) {
                                hid_err(parser->device,
                                        "no more usage index available\n");
                                return -1;
                        }
                }

                for (n = parser->local.usage_minimum; n <= data; n++)
                        if (hid_add_usage(parser, n)) {
                                dbg_hid("hid_add_usage failed\n");
                                return -1;
                        }
                return 0;

        default:

                dbg_hid("unknown local item tag 0x%x\n", item->tag);
                return 0;
        }
        return 0;
}

/*
 * Process a main item.
 */

static int hid_parser_main(struct hid_parser *parser, struct hid_item *item)
{
        __u32 data;
        int ret;

        data = item_udata(item);

        switch (item->tag) {
        case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
                ret = open_collection(parser, data & 0xff);
                break;
        case HID_MAIN_ITEM_TAG_END_COLLECTION:
                ret = close_collection(parser);
                break;
        case HID_MAIN_ITEM_TAG_INPUT:
                ret = hid_add_field(parser, HID_INPUT_REPORT, data);
                break;
        case HID_MAIN_ITEM_TAG_OUTPUT:
                ret = hid_add_field(parser, HID_OUTPUT_REPORT, data);
                break;
        case HID_MAIN_ITEM_TAG_FEATURE:
                ret = hid_add_field(parser, HID_FEATURE_REPORT, data);
                break;
        default:
                hid_err(parser->device, "unknown main item tag 0x%x\n", item->tag);
                ret = 0;
        }

        memset(&parser->local, 0, sizeof(parser->local));       /* Reset the local parser environment */

        return ret;
}

/*
 * Process a reserved item.
 */

static int hid_parser_reserved(struct hid_parser *parser, struct hid_item *item)
{
        dbg_hid("reserved item type, tag 0x%x\n", item->tag);
        return 0;
}

/*
 * Free a report and all registered fields. The field->usage and
 * field->value table's are allocated behind the field, so we need
 * only to free(field) itself.
 */

static void hid_free_report(struct hid_report *report)
{
        unsigned n;

        for (n = 0; n < report->maxfield; n++)
                kfree(report->field[n]);
        kfree(report);
}

/*
 * Close report. This function returns the device
 * state to the point prior to hid_open_report().
 */
static void hid_close_report(struct hid_device *device)
{
        unsigned i, j;

        for (i = 0; i < HID_REPORT_TYPES; i++) {
                struct hid_report_enum *report_enum = device->report_enum + i;

                for (j = 0; j < HID_MAX_IDS; j++) {
                        struct hid_report *report = report_enum->report_id_hash[j];
                        if (report)
                                hid_free_report(report);
                }
                memset(report_enum, 0, sizeof(*report_enum));
                INIT_LIST_HEAD(&report_enum->report_list);
        }

        kfree(device->rdesc);
        device->rdesc = NULL;
        device->rsize = 0;

        kfree(device->collection);
        device->collection = NULL;
        device->collection_size = 0;
        device->maxcollection = 0;
        device->maxapplication = 0;

        device->status &= ~HID_STAT_PARSED;
}

/*
 * Free a device structure, all reports, and all fields.
 */

static void hid_device_release(struct device *dev)
{
        struct hid_device *hid = to_hid_device(dev);

        hid_close_report(hid);
        kfree(hid->dev_rdesc);
        kfree(hid);
}

/*
 * Fetch a report description item from the data stream. We support long
 * items, though they are not used yet.
 */

static u8 *fetch_item(__u8 *start, __u8 *end, struct hid_item *item)
{
        u8 b;

        if ((end - start) <= 0)
                return NULL;

        b = *start++;

        item->type = (b >> 2) & 3;
        item->tag  = (b >> 4) & 15;

        if (item->tag == HID_ITEM_TAG_LONG) {

                item->format = HID_ITEM_FORMAT_LONG;

                if ((end - start) < 2)
                        return NULL;

                item->size = *start++;
                item->tag  = *start++;

                if ((end - start) < item->size)
                        return NULL;

                item->data.longdata = start;
                start += item->size;
                return start;
        }

        item->format = HID_ITEM_FORMAT_SHORT;
        item->size = b & 3;

        switch (item->size) {
        case 0:
                return start;

        case 1:
                if ((end - start) < 1)
                        return NULL;
                item->data.u8 = *start++;
                return start;

        case 2:
                if ((end - start) < 2)
                        return NULL;
                item->data.u16 = get_unaligned_le16(start);
                start = (__u8 *)((__le16 *)start + 1);
                return start;

        case 3:
                item->size++;
                if ((end - start) < 4)
                        return NULL;
                item->data.u32 = get_unaligned_le32(start);
                start = (__u8 *)((__le32 *)start + 1);
                return start;
        }

        return NULL;
}

static void hid_scan_input_usage(struct hid_parser *parser, u32 usage)
{
        struct hid_device *hid = parser->device;

        if (usage == HID_DG_CONTACTID)
                hid->group = HID_GROUP_MULTITOUCH;
}

static void hid_scan_feature_usage(struct hid_parser *parser, u32 usage)
{
        if (usage == 0xff0000c5 && parser->global.report_count == 256 &&
            parser->global.report_size == 8)
                parser->scan_flags |= HID_SCAN_FLAG_MT_WIN_8;
}

static void hid_scan_collection(struct hid_parser *parser, unsigned type)
{
        struct hid_device *hid = parser->device;
        int i;

        if (((parser->global.usage_page << 16) == HID_UP_SENSOR) &&
            type == HID_COLLECTION_PHYSICAL)
                hid->group = HID_GROUP_SENSOR_HUB;

        if (hid->vendor == USB_VENDOR_ID_MICROSOFT &&
            (hid->product == USB_DEVICE_ID_MS_TYPE_COVER_PRO_3 ||
             hid->product == USB_DEVICE_ID_MS_TYPE_COVER_PRO_3_2 ||
             hid->product == USB_DEVICE_ID_MS_TYPE_COVER_PRO_3_JP ||
             hid->product == USB_DEVICE_ID_MS_TYPE_COVER_3 ||
             hid->product == USB_DEVICE_ID_MS_POWER_COVER) &&
            hid->group == HID_GROUP_MULTITOUCH)
                hid->group = HID_GROUP_GENERIC;

        if ((parser->global.usage_page << 16) == HID_UP_GENDESK)
                for (i = 0; i < parser->local.usage_index; i++)
                        if (parser->local.usage[i] == HID_GD_POINTER)
                                parser->scan_flags |= HID_SCAN_FLAG_GD_POINTER;

        if ((parser->global.usage_page << 16) >= HID_UP_MSVENDOR)
                parser->scan_flags |= HID_SCAN_FLAG_VENDOR_SPECIFIC;
}

static int hid_scan_main(struct hid_parser *parser, struct hid_item *item)
{
        __u32 data;
        int i;

        data = item_udata(item);

        switch (item->tag) {
        case HID_MAIN_ITEM_TAG_BEGIN_COLLECTION:
                hid_scan_collection(parser, data & 0xff);
                break;
        case HID_MAIN_ITEM_TAG_END_COLLECTION:
                break;
        case HID_MAIN_ITEM_TAG_INPUT:
                /* ignore constant inputs, they will be ignored by hid-input */
                if (data & HID_MAIN_ITEM_CONSTANT)
                        break;
                for (i = 0; i < parser->local.usage_index; i++)
                        hid_scan_input_usage(parser, parser->local.usage[i]);
                break;
        case HID_MAIN_ITEM_TAG_OUTPUT:
                break;
        case HID_MAIN_ITEM_TAG_FEATURE:
                for (i = 0; i < parser->local.usage_index; i++)
                        hid_scan_feature_usage(parser, parser->local.usage[i]);
                break;
        }

        /* Reset the local parser environment */
        memset(&parser->local, 0, sizeof(parser->local));

        return 0;
}

/*
 * Scan a report descriptor before the device is added to the bus.
 * Sets device groups and other properties that determine what driver
 * to load.
 */
static int hid_scan_report(struct hid_device *hid)
{
        struct hid_parser *parser;
        struct hid_item item;
        __u8 *start = hid->dev_rdesc;
        __u8 *end = start + hid->dev_rsize;
        static int (*dispatch_type[])(struct hid_parser *parser,
                                      struct hid_item *item) = {
                hid_scan_main,
                hid_parser_global,
                hid_parser_local,
                hid_parser_reserved
        };

        parser = vzalloc(sizeof(struct hid_parser));
        if (!parser)
                return -ENOMEM;

        parser->device = hid;
        hid->group = HID_GROUP_GENERIC;

        /*
         * The parsing is simpler than the one in hid_open_report() as we should
         * be robust against hid errors. Those errors will be raised by
         * hid_open_report() anyway.
         */
        while ((start = fetch_item(start, end, &item)) != NULL)
                dispatch_type[item.type](parser, &item);

        /*
         * Handle special flags set during scanning.
         */
        if ((parser->scan_flags & HID_SCAN_FLAG_MT_WIN_8) &&
            (hid->group == HID_GROUP_MULTITOUCH))
                hid->group = HID_GROUP_MULTITOUCH_WIN_8;

        /*
         * Vendor specific handlings
         */
        switch (hid->vendor) {
        case USB_VENDOR_ID_WACOM:
                hid->group = HID_GROUP_WACOM;
                break;
        case USB_VENDOR_ID_SYNAPTICS:
                if (hid->group == HID_GROUP_GENERIC)
                        if ((parser->scan_flags & HID_SCAN_FLAG_VENDOR_SPECIFIC)
                            && (parser->scan_flags & HID_SCAN_FLAG_GD_POINTER))
                                /*
                                 * hid-rmi should take care of them,
                                 * not hid-generic
                                 */
                                hid->group = HID_GROUP_RMI;
                break;
        }

        vfree(parser);
        return 0;
}

/**
 * hid_parse_report - parse device report
 *
 * @device: hid device
 * @start: report start
 * @size: report size
 *
 * Allocate the device report as read by the bus driver. This function should
 * only be called from parse() in ll drivers.
 */
int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size)
{
        hid->dev_rdesc = kmemdup(start, size, GFP_KERNEL);
        if (!hid->dev_rdesc)
                return -ENOMEM;
        hid->dev_rsize = size;
        return 0;
}
EXPORT_SYMBOL_GPL(hid_parse_report);

static const char * const hid_report_names[] = {
        "HID_INPUT_REPORT",
        "HID_OUTPUT_REPORT",
        "HID_FEATURE_REPORT",
};
/**
 * hid_validate_values - validate existing device report's value indexes
 *
 * @device: hid device
 * @type: which report type to examine
 * @id: which report ID to examine (0 for first)
 * @field_index: which report field to examine
 * @report_counts: expected number of values
 *
 * Validate the number of values in a given field of a given report, after
 * parsing.
 */
struct hid_report *hid_validate_values(struct hid_device *hid,
                                       unsigned int type, unsigned int id,
                                       unsigned int field_index,
                                       unsigned int report_counts)
{
        struct hid_report *report;

        if (type > HID_FEATURE_REPORT) {
                hid_err(hid, "invalid HID report type %u\n", type);
                return NULL;
        }

        if (id >= HID_MAX_IDS) {
                hid_err(hid, "invalid HID report id %u\n", id);
                return NULL;
        }

        /*
         * Explicitly not using hid_get_report() here since it depends on
         * ->numbered being checked, which may not always be the case when
         * drivers go to access report values.
         */
        if (id == 0) {
                /*
                 * Validating on id 0 means we should examine the first
                 * report in the list.
                 */
                report = list_entry(
                                hid->report_enum[type].report_list.next,
                                struct hid_report, list);
        } else {
                report = hid->report_enum[type].report_id_hash[id];
        }
        if (!report) {
                hid_err(hid, "missing %s %u\n", hid_report_names[type], id);
                return NULL;
        }
        if (report->maxfield <= field_index) {
                hid_err(hid, "not enough fields in %s %u\n",
                        hid_report_names[type], id);
                return NULL;
        }
        if (report->field[field_index]->report_count < report_counts) {
                hid_err(hid, "not enough values in %s %u field %u\n",
                        hid_report_names[type], id, field_index);
                return NULL;
        }
        return report;
}
EXPORT_SYMBOL_GPL(hid_validate_values);

/**
 * hid_open_report - open a driver-specific device report
 *
 * @device: hid device
 *
 * Parse a report description into a hid_device structure. Reports are
 * enumerated, fields are attached to these reports.
 * 0 returned on success, otherwise nonzero error value.
 *
 * This function (or the equivalent hid_parse() macro) should only be
 * called from probe() in drivers, before starting the device.
 */
int hid_open_report(struct hid_device *device)
{
        struct hid_parser *parser;
        struct hid_item item;
        unsigned int size;
        __u8 *start;
        __u8 *buf;
        __u8 *end;
        int ret;
        static int (*dispatch_type[])(struct hid_parser *parser,
                                      struct hid_item *item) = {
                hid_parser_main,
                hid_parser_global,
                hid_parser_local,
                hid_parser_reserved
        };

        if (WARN_ON(device->status & HID_STAT_PARSED))
                return -EBUSY;

        start = device->dev_rdesc;
        if (WARN_ON(!start))
                return -ENODEV;
        size = device->dev_rsize;

        buf = kmemdup(start, size, GFP_KERNEL);
        if (buf == NULL)
                return -ENOMEM;

        if (device->driver->report_fixup)
                start = device->driver->report_fixup(device, buf, &size);
        else
                start = buf;

        start = kmemdup(start, size, GFP_KERNEL);
        kfree(buf);
        if (start == NULL)
                return -ENOMEM;

        device->rdesc = start;
        device->rsize = size;

        parser = vzalloc(sizeof(struct hid_parser));
        if (!parser) {
                ret = -ENOMEM;
                goto err;
        }

        parser->device = device;

        end = start + size;

        device->collection = kcalloc(HID_DEFAULT_NUM_COLLECTIONS,
                                     sizeof(struct hid_collection), GFP_KERNEL);
        if (!device->collection) {
                ret = -ENOMEM;
                goto err;
        }
        device->collection_size = HID_DEFAULT_NUM_COLLECTIONS;

        ret = -EINVAL;
        while ((start = fetch_item(start, end, &item)) != NULL) {

                if (item.format != HID_ITEM_FORMAT_SHORT) {
                        hid_err(device, "unexpected long global item\n");
                        goto err;
                }

                if (dispatch_type[item.type](parser, &item)) {
                        hid_err(device, "item %u %u %u %u parsing failed\n",
                                item.format, (unsigned)item.size,
                                (unsigned)item.type, (unsigned)item.tag);
                        goto err;
                }

                if (start == end) {
                        if (parser->collection_stack_ptr) {
                                hid_err(device, "unbalanced collection at end of report description\n");
                                goto err;
                        }
                        if (parser->local.delimiter_depth) {
                                hid_err(device, "unbalanced delimiter at end of report description\n");
                                goto err;
                        }
                        vfree(parser);
                        device->status |= HID_STAT_PARSED;
                        return 0;
                }
        }

        hid_err(device, "item fetching failed at offset %d\n", (int)(end - start));
err:
        vfree(parser);
        hid_close_report(device);
        return ret;
}
EXPORT_SYMBOL_GPL(hid_open_report);

/*
 * Convert a signed n-bit integer to signed 32-bit integer. Common
 * cases are done through the compiler, the screwed things has to be
 * done by hand.
 */

static s32 snto32(__u32 value, unsigned n)
{
        switch (n) {
        case 8:  return ((__s8)value);
        case 16: return ((__s16)value);
        case 32: return ((__s32)value);
        }
        return value & (1 << (n - 1)) ? value | (-1 << n) : value;
}

s32 hid_snto32(__u32 value, unsigned n)
{
        return snto32(value, n);
}
EXPORT_SYMBOL_GPL(hid_snto32);

/*
 * Convert a signed 32-bit integer to a signed n-bit integer.
 */

static u32 s32ton(__s32 value, unsigned n)
{
        s32 a = value >> (n - 1);
        if (a && a != -1)
                return value < 0 ? 1 << (n - 1) : (1 << (n - 1)) - 1;
        return value & ((1 << n) - 1);
}

/*
 * Extract/implement a data field from/to a little endian report (bit array).
 *
 * Code sort-of follows HID spec:
 *     http://www.usb.org/developers/hidpage/HID1_11.pdf
 *
 * While the USB HID spec allows unlimited length bit fields in "report
 * descriptors", most devices never use more than 16 bits.
 * One model of UPS is claimed to report "LINEV" as a 32-bit field.
 * Search linux-kernel and linux-usb-devel archives for "hid-core extract".
 */

static u32 __extract(u8 *report, unsigned offset, int n)
{
        unsigned int idx = offset / 8;
        unsigned int bit_nr = 0;
        unsigned int bit_shift = offset % 8;
        int bits_to_copy = 8 - bit_shift;
        u32 value = 0;
        u32 mask = n < 32 ? (1U << n) - 1 : ~0U;

        while (n > 0) {
                value |= ((u32)report[idx] >> bit_shift) << bit_nr;
                n -= bits_to_copy;
                bit_nr += bits_to_copy;
                bits_to_copy = 8;
                bit_shift = 0;
                idx++;
        }

        return value & mask;
}

u32 hid_field_extract(const struct hid_device *hid, u8 *report,
                        unsigned offset, unsigned n)
{
        if (n > 32) {
                hid_warn(hid, "hid_field_extract() called with n (%d) > 32! (%s)\n",
                         n, current->comm);
                n = 32;
        }

        return __extract(report, offset, n);
}
EXPORT_SYMBOL_GPL(hid_field_extract);

/*
 * "implement" : set bits in a little endian bit stream.
 * Same concepts as "extract" (see comments above).
 * The data mangled in the bit stream remains in little endian
 * order the whole time. It make more sense to talk about
 * endianness of register values by considering a register
 * a "cached" copy of the little endian bit stream.
 */

static void __implement(u8 *report, unsigned offset, int n, u32 value)
{
        unsigned int idx = offset / 8;
        unsigned int size = offset + n;
        unsigned int bit_shift = offset % 8;
        int bits_to_set = 8 - bit_shift;
        u8 bit_mask = 0xff << bit_shift;

        while (n - bits_to_set >= 0) {
                report[idx] &= ~bit_mask;
                report[idx] |= value << bit_shift;
                value >>= bits_to_set;
                n -= bits_to_set;
                bits_to_set = 8;
                bit_mask = 0xff;
                bit_shift = 0;
                idx++;
        }

        /* last nibble */
        if (n) {
                if (size % 8)
                        bit_mask &= (1U << (size % 8)) - 1;
                report[idx] &= ~bit_mask;
                report[idx] |= (value << bit_shift) & bit_mask;
        }
}

static void implement(const struct hid_device *hid, u8 *report,
                      unsigned offset, unsigned n, u32 value)
{
        u64 m;

        if (n > 32) {
                hid_warn(hid, "%s() called with n (%d) > 32! (%s)\n",
                         __func__, n, current->comm);
                n = 32;
        }

        m = (1ULL << n) - 1;
        if (value > m)
                hid_warn(hid, "%s() called with too large value %d! (%s)\n",
                         __func__, value, current->comm);
        WARN_ON(value > m);
        value &= m;

        __implement(report, offset, n, value);
}

/*
 * Search an array for a value.
 */

static int search(__s32 *array, __s32 value, unsigned n)
{
        while (n--) {
                if (*array++ == value)
                        return 0;
        }
        return -1;
}

/**
 * hid_match_report - check if driver's raw_event should be called
 *
 * @hid: hid device
 * @report_type: type to match against
 *
 * compare hid->driver->report_table->report_type to report->type
 */
static int hid_match_report(struct hid_device *hid, struct hid_report *report)
{
        const struct hid_report_id *id = hid->driver->report_table;

        if (!id) /* NULL means all */
                return 1;

        for (; id->report_type != HID_TERMINATOR; id++)
                if (id->report_type == HID_ANY_ID ||
                                id->report_type == report->type)
                        return 1;
        return 0;
}

/**
 * hid_match_usage - check if driver's event should be called
 *
 * @hid: hid device
 * @usage: usage to match against
 *
 * compare hid->driver->usage_table->usage_{type,code} to
 * usage->usage_{type,code}
 */
static int hid_match_usage(struct hid_device *hid, struct hid_usage *usage)
{
        const struct hid_usage_id *id = hid->driver->usage_table;

        if (!id) /* NULL means all */
                return 1;

        for (; id->usage_type != HID_ANY_ID - 1; id++)
                if ((id->usage_hid == HID_ANY_ID ||
                                id->usage_hid == usage->hid) &&
                                (id->usage_type == HID_ANY_ID ||
                                id->usage_type == usage->type) &&
                                (id->usage_code == HID_ANY_ID ||
                                 id->usage_code == usage->code))
                        return 1;
        return 0;
}

static void hid_process_event(struct hid_device *hid, struct hid_field *field,
                struct hid_usage *usage, __s32 value, int interrupt)
{
        struct hid_driver *hdrv = hid->driver;
        int ret;

        if (!list_empty(&hid->debug_list))
                hid_dump_input(hid, usage, value);

        if (hdrv && hdrv->event && hid_match_usage(hid, usage)) {
                ret = hdrv->event(hid, field, usage, value);
                if (ret != 0) {
                        if (ret < 0)
                                hid_err(hid, "%s's event failed with %d\n",
                                                hdrv->name, ret);
                        return;
                }
        }

        if (hid->claimed & HID_CLAIMED_INPUT)
                hidinput_hid_event(hid, field, usage, value);
        if (hid->claimed & HID_CLAIMED_HIDDEV && interrupt && hid->hiddev_hid_event)
                hid->hiddev_hid_event(hid, field, usage, value);
}

/*
 * Analyse a received field, and fetch the data from it. The field
 * content is stored for next report processing (we do differential
 * reporting to the layer).
 */

static void hid_input_field(struct hid_device *hid, struct hid_field *field,
                            __u8 *data, int interrupt)
{
        unsigned n;
        unsigned count = field->report_count;
        unsigned offset = field->report_offset;
        unsigned size = field->report_size;
        __s32 min = field->logical_minimum;
        __s32 max = field->logical_maximum;
        __s32 *value;

        value = kmalloc(sizeof(__s32) * count, GFP_ATOMIC);
        if (!value)
                return;

        for (n = 0; n < count; n++) {

                value[n] = min < 0 ?
                        snto32(hid_field_extract(hid, data, offset + n * size,
                               size), size) :
                        hid_field_extract(hid, data, offset + n * size, size);

                /* Ignore report if ErrorRollOver */
                if (!(field->flags & HID_MAIN_ITEM_VARIABLE) &&
                    value[n] >= min && value[n] <= max &&
                    value[n] - min < field->maxusage &&
                    field->usage[value[n] - min].hid == HID_UP_KEYBOARD + 1)
                        goto exit;
        }

        for (n = 0; n < count; n++) {

                if (HID_MAIN_ITEM_VARIABLE & field->flags) {
                        hid_process_event(hid, field, &field->usage[n], value[n], interrupt);
                        continue;
                }

                if (field->value[n] >= min && field->value[n] <= max
                        && field->value[n] - min < field->maxusage
                        && field->usage[field->value[n] - min].hid
                        && search(value, field->value[n], count))
                                hid_process_event(hid, field, &field->usage[field->value[n] - min], 0, interrupt);

                if (value[n] >= min && value[n] <= max
                        && value[n] - min < field->maxusage
                        && field->usage[value[n] - min].hid
                        && search(field->value, value[n], count))
                                hid_process_event(hid, field, &field->usage[value[n] - min], 1, interrupt);
        }

        memcpy(field->value, value, count * sizeof(__s32));
exit:
        kfree(value);
}

/*
 * Output the field into the report.
 */

static void hid_output_field(const struct hid_device *hid,
                             struct hid_field *field, __u8 *data)
{
        unsigned count = field->report_count;
        unsigned offset = field->report_offset;
        unsigned size = field->report_size;
        unsigned n;

        for (n = 0; n < count; n++) {
                if (field->logical_minimum < 0) /* signed values */
                        implement(hid, data, offset + n * size, size,
                                  s32ton(field->value[n], size));
                else                            /* unsigned values */
                        implement(hid, data, offset + n * size, size,
                                  field->value[n]);
        }
}

/*
 * Create a report. 'data' has to be allocated using
 * hid_alloc_report_buf() so that it has proper size.
 */

void hid_output_report(struct hid_report *report, __u8 *data)
{
        unsigned n;

        if (report->id > 0)
                *data++ = report->id;

        memset(data, 0, ((report->size - 1) >> 3) + 1);
        for (n = 0; n < report->maxfield; n++)
                hid_output_field(report->device, report->field[n], data);
}
EXPORT_SYMBOL_GPL(hid_output_report);

/*
 * Allocator for buffer that is going to be passed to hid_output_report()
 */
u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags)
{
        /*
         * 7 extra bytes are necessary to achieve proper functionality
         * of implement() working on 8 byte chunks
         */

        int len = hid_report_len(report) + 7;

        return kmalloc(len, flags);
}
EXPORT_SYMBOL_GPL(hid_alloc_report_buf);

/*
 * Set a field value. The report this field belongs to has to be
 * created and transferred to the device, to set this value in the
 * device.
 */

int hid_set_field(struct hid_field *field, unsigned offset, __s32 value)
{
        unsigned size;

        if (!field)
                return -1;

        size = field->report_size;

        hid_dump_input(field->report->device, field->usage + offset, value);

        if (offset >= field->report_count) {
                hid_err(field->report->device, "offset (%d) exceeds report_count (%d)\n",
                                offset, field->report_count);
                return -1;
        }
        if (field->logical_minimum < 0) {
                if (value != snto32(s32ton(value, size), size)) {
                        hid_err(field->report->device, "value %d is out of range\n", value);
                        return -1;
                }
        }
        field->value[offset] = value;
        return 0;
}
EXPORT_SYMBOL_GPL(hid_set_field);

static struct hid_report *hid_get_report(struct hid_report_enum *report_enum,
                const u8 *data)
{
        struct hid_report *report;
        unsigned int n = 0;     /* Normally report number is 0 */

        /* Device uses numbered reports, data[0] is report number */
        if (report_enum->numbered)
                n = *data;

        report = report_enum->report_id_hash[n];
        if (report == NULL)
                dbg_hid("undefined report_id %u received\n", n);

        return report;
}

/*
 * Implement a generic .request() callback, using .raw_request()
 * DO NOT USE in hid drivers directly, but through hid_hw_request instead.
 */
void __hid_request(struct hid_device *hid, struct hid_report *report,
                int reqtype)
{
        char *buf;
        int ret;
        int len;

        buf = hid_alloc_report_buf(report, GFP_KERNEL);
        if (!buf)
                return;

        len = hid_report_len(report);

        if (reqtype == HID_REQ_SET_REPORT)
                hid_output_report(report, buf);

        ret = hid->ll_driver->raw_request(hid, report->id, buf, len,
                                          report->type, reqtype);
        if (ret < 0) {
                dbg_hid("unable to complete request: %d\n", ret);
                goto out;
        }

        if (reqtype == HID_REQ_GET_REPORT)
                hid_input_report(hid, report->type, buf, ret, 0);

out:
        kfree(buf);
}
EXPORT_SYMBOL_GPL(__hid_request);

int hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
                int interrupt)
{
        struct hid_report_enum *report_enum = hid->report_enum + type;
        struct hid_report *report;
        struct hid_driver *hdrv;
        unsigned int a;
        int rsize, csize = size;
        u8 *cdata = data;
        int ret = 0;

        report = hid_get_report(report_enum, data);
        if (!report)
                goto out;

        if (report_enum->numbered) {
                cdata++;
                csize--;
        }

        rsize = ((report->size - 1) >> 3) + 1;

        if (rsize > HID_MAX_BUFFER_SIZE)
                rsize = HID_MAX_BUFFER_SIZE;

        if (csize < rsize) {
                dbg_hid("report %d is too short, (%d < %d)\n", report->id,
                                csize, rsize);
                memset(cdata + csize, 0, rsize - csize);
        }

        if ((hid->claimed & HID_CLAIMED_HIDDEV) && hid->hiddev_report_event)
                hid->hiddev_report_event(hid, report);
        if (hid->claimed & HID_CLAIMED_HIDRAW) {
                ret = hidraw_report_event(hid, data, size);
                if (ret)
                        goto out;
        }

        if (hid->claimed != HID_CLAIMED_HIDRAW && report->maxfield) {
                for (a = 0; a < report->maxfield; a++)
                        hid_input_field(hid, report->field[a], cdata, interrupt);
                hdrv = hid->driver;
                if (hdrv && hdrv->report)
                        hdrv->report(hid, report);
        }

        if (hid->claimed & HID_CLAIMED_INPUT)
                hidinput_report_event(hid, report);
out:
        return ret;
}
EXPORT_SYMBOL_GPL(hid_report_raw_event);

/**
 * hid_input_report - report data from lower layer (usb, bt...)
 *
 * @hid: hid device
 * @type: HID report type (HID_*_REPORT)
 * @data: report contents
 * @size: size of data parameter
 * @interrupt: distinguish between interrupt and control transfers
 *
 * This is data entry for lower layers.
 */
int hid_input_report(struct hid_device *hid, int type, u8 *data, int size, int interrupt)
{
        struct hid_report_enum *report_enum;
        struct hid_driver *hdrv;
        struct hid_report *report;
        int ret = 0;

        if (!hid)
                return -ENODEV;

        if (down_trylock(&hid->driver_input_lock))
                return -EBUSY;

        if (!hid->driver) {
                ret = -ENODEV;
                goto unlock;
        }
        report_enum = hid->report_enum + type;
        hdrv = hid->driver;

        if (!size) {
                dbg_hid("empty report\n");
                ret = -1;
                goto unlock;
        }

        /* Avoid unnecessary overhead if debugfs is disabled */
        if (!list_empty(&hid->debug_list))
                hid_dump_report(hid, type, data, size);

        report = hid_get_report(report_enum, data);

        if (!report) {
                ret = -1;
                goto unlock;
        }

        if (hdrv && hdrv->raw_event && hid_match_report(hid, report)) {
                ret = hdrv->raw_event(hid, report, data, size);
                if (ret < 0)
                        goto unlock;
        }

        ret = hid_report_raw_event(hid, type, data, size, interrupt);

unlock:
        up(&hid->driver_input_lock);
        return ret;
}
EXPORT_SYMBOL_GPL(hid_input_report);

static bool hid_match_one_id(struct hid_device *hdev,
                const struct hid_device_id *id)
{
        return (id->bus == HID_BUS_ANY || id->bus == hdev->bus) &&
                (id->group == HID_GROUP_ANY || id->group == hdev->group) &&
                (id->vendor == HID_ANY_ID || id->vendor == hdev->vendor) &&
                (id->product == HID_ANY_ID || id->product == hdev->product);
}

const struct hid_device_id *hid_match_id(struct hid_device *hdev,
                const struct hid_device_id *id)
{
        for (; id->bus; id++)
                if (hid_match_one_id(hdev, id))
                        return id;

        return NULL;
}

static const struct hid_device_id hid_hiddev_list[] = {
        { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MGE, USB_DEVICE_ID_MGE_UPS1) },
        { }
};

static bool hid_hiddev(struct hid_device *hdev)
{
        return !!hid_match_id(hdev, hid_hiddev_list);
}


static ssize_t
read_report_descriptor(struct file *filp, struct kobject *kobj,
                struct bin_attribute *attr,
                char *buf, loff_t off, size_t count)
{
        struct device *dev = kobj_to_dev(kobj);
        struct hid_device *hdev = to_hid_device(dev);

        if (off >= hdev->rsize)
                return 0;

        if (off + count > hdev->rsize)
                count = hdev->rsize - off;

        memcpy(buf, hdev->rdesc + off, count);

        return count;
}

static ssize_t
show_country(struct device *dev, struct device_attribute *attr,
                char *buf)
{
        struct hid_device *hdev = to_hid_device(dev);

        return sprintf(buf, "%02x\n", hdev->country & 0xff);
}

static struct bin_attribute dev_bin_attr_report_desc = {
        .attr = { .name = "report_descriptor", .mode = 0444 },
        .read = read_report_descriptor,
        .size = HID_MAX_DESCRIPTOR_SIZE,
};

static struct device_attribute dev_attr_country = {
        .attr = { .name = "country", .mode = 0444 },
        .show = show_country,
};

int hid_connect(struct hid_device *hdev, unsigned int connect_mask)
{
        static const char *types[] = { "Device", "Pointer", "Mouse", "Device",
                "Joystick", "Gamepad", "Keyboard", "Keypad",
                "Multi-Axis Controller"
        };
        const char *type, *bus;
        char buf[64] = "";
        unsigned int i;
        int len;
        int ret;

        if (hdev->quirks & HID_QUIRK_HIDDEV_FORCE)
                connect_mask |= (HID_CONNECT_HIDDEV_FORCE | HID_CONNECT_HIDDEV);
        if (hdev->quirks & HID_QUIRK_HIDINPUT_FORCE)
                connect_mask |= HID_CONNECT_HIDINPUT_FORCE;
        if (hdev->bus != BUS_USB)
                connect_mask &= ~HID_CONNECT_HIDDEV;
        if (hid_hiddev(hdev))
                connect_mask |= HID_CONNECT_HIDDEV_FORCE;

        if ((connect_mask & HID_CONNECT_HIDINPUT) && !hidinput_connect(hdev,
                                connect_mask & HID_CONNECT_HIDINPUT_FORCE))
                hdev->claimed |= HID_CLAIMED_INPUT;

        if ((connect_mask & HID_CONNECT_HIDDEV) && hdev->hiddev_connect &&
                        !hdev->hiddev_connect(hdev,
                                connect_mask & HID_CONNECT_HIDDEV_FORCE))
                hdev->claimed |= HID_CLAIMED_HIDDEV;
        if ((connect_mask & HID_CONNECT_HIDRAW) && !hidraw_connect(hdev))
                hdev->claimed |= HID_CLAIMED_HIDRAW;

        if (connect_mask & HID_CONNECT_DRIVER)
                hdev->claimed |= HID_CLAIMED_DRIVER;

        /* Drivers with the ->raw_event callback set are not required to connect
         * to any other listener. */
        if (!hdev->claimed && !hdev->driver->raw_event) {
                hid_err(hdev, "device has no listeners, quitting\n");
                return -ENODEV;
        }

        if ((hdev->claimed & HID_CLAIMED_INPUT) &&
                        (connect_mask & HID_CONNECT_FF) && hdev->ff_init)
                hdev->ff_init(hdev);

        len = 0;
        if (hdev->claimed & HID_CLAIMED_INPUT)
                len += sprintf(buf + len, "input");
        if (hdev->claimed & HID_CLAIMED_HIDDEV)
                len += sprintf(buf + len, "%shiddev%d", len ? "," : "",
                                hdev->minor);
        if (hdev->claimed & HID_CLAIMED_HIDRAW)
                len += sprintf(buf + len, "%shidraw%d", len ? "," : "",
                                ((struct hidraw *)hdev->hidraw)->minor);

        type = "Device";
        for (i = 0; i < hdev->maxcollection; i++) {
                struct hid_collection *col = &hdev->collection[i];
                if (col->type == HID_COLLECTION_APPLICATION &&
                   (col->usage & HID_USAGE_PAGE) == HID_UP_GENDESK &&
                   (col->usage & 0xffff) < ARRAY_SIZE(types)) {
                        type = types[col->usage & 0xffff];
                        break;
                }
        }

        switch (hdev->bus) {
        case BUS_USB:
                bus = "USB";
                break;
        case BUS_BLUETOOTH:
                bus = "BLUETOOTH";
                break;
        case BUS_I2C:
                bus = "I2C";
                break;
        default:
                bus = "<UNKNOWN>";
        }

        ret = device_create_file(&hdev->dev, &dev_attr_country);
        if (ret)
                hid_warn(hdev,
                         "can't create sysfs country code attribute err: %d\n", ret);

        hid_info(hdev, "%s: %s HID v%x.%02x %s [%s] on %s\n",
                 buf, bus, hdev->version >> 8, hdev->version & 0xff,
                 type, hdev->name, hdev->phys);

        return 0;
}
EXPORT_SYMBOL_GPL(hid_connect);

void hid_disconnect(struct hid_device *hdev)
{
        device_remove_file(&hdev->dev, &dev_attr_country);
        if (hdev->claimed & HID_CLAIMED_INPUT)
                hidinput_disconnect(hdev);
        if (hdev->claimed & HID_CLAIMED_HIDDEV)
                hdev->hiddev_disconnect(hdev);
        if (hdev->claimed & HID_CLAIMED_HIDRAW)
                hidraw_disconnect(hdev);
        hdev->claimed = 0;
}
EXPORT_SYMBOL_GPL(hid_disconnect);

/*
 * A list of devices for which there is a specialized driver on HID bus.
 *
 * Please note that for multitouch devices (driven by hid-multitouch driver),
 * there is a proper autodetection and autoloading in place (based on presence
 * of HID_DG_CONTACTID), so those devices don't need to be added to this list,
 * as we are doing the right thing in hid_scan_usage().
 *
 * Autodetection for (USB) HID sensor hubs exists too. If a collection of type
 * physical is found inside a usage page of type sensor, hid-sensor-hub will be
 * used as a driver. See hid_scan_report().
 */
static const struct hid_device_id hid_have_special_driver[] = {
        { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_WCP32PU) },
        { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_X5_005D) },
        { HID_USB_DEVICE(USB_VENDOR_ID_A4TECH, USB_DEVICE_ID_A4TECH_RP_649) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0x0802) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ACRUX, 0xf705) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MIGHTYMOUSE) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICMOUSE) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_MAGICTRACKPAD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_MINI_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL3) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL4) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_IRCONTROL5) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_ISO) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_REVB_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING9_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING9_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING9_JIS) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_JIS) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
        { HID_USB_DEVICE(USB_VENDOR_ID_AUREAL, USB_DEVICE_ID_AUREAL_W01RN) },
        { HID_USB_DEVICE(USB_VENDOR_ID_BELKIN, USB_DEVICE_ID_FLIP_KVM) },
        { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185BFM, 0x2208) },
        { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185PC, 0x5506) },
        { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185V2PC, 0x1850) },
        { HID_USB_DEVICE(USB_VENDOR_ID_BETOP_2185V2BFM, 0x5500) },
        { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_BTC, USB_DEVICE_ID_BTC_EMPREX_REMOTE_2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CHERRY, USB_DEVICE_ID_CHERRY_CYMOTION_SOLAR) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_TACTICAL_PAD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_WIRELESS2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_AK1D) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CHICONY, USB_DEVICE_ID_CHICONY_ACER_SWITCH12) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CORSAIR, USB_DEVICE_ID_CORSAIR_K90) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CREATIVELABS, USB_DEVICE_ID_PRODIKEYS_PCMIDI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_CP2112) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_1) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_3) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_BARCODE_4) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_MOUSE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0006) },
        { HID_USB_DEVICE(USB_VENDOR_ID_DRAGONRISE, 0x0011) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, USB_DEVICE_ID_ELECOM_BM084) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0009) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ELO, 0x0030) },
        { HID_USB_DEVICE(USB_VENDOR_ID_EMS, USB_DEVICE_ID_EMS_TRIO_LINKER_PLUS_II) },
        { HID_USB_DEVICE(USB_VENDOR_ID_EZKEY, USB_DEVICE_ID_BTC_8193) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PSX_ADAPTOR) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GAMERON, USB_DEVICE_ID_GAMERON_DUAL_PCS_ADAPTOR) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GEMBIRD, USB_DEVICE_ID_GEMBIRD_JPD_DUALFORCE2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0003) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GREENASIA, 0x0012) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GYRATION, USB_DEVICE_ID_GYRATION_REMOTE_3) },
        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK, USB_DEVICE_ID_HOLTEK_ON_LINE_GRIP) },
        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_KEYBOARD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A04A) },
        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A067) },
        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A070) },
        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A072) },
        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A081) },
        { HID_USB_DEVICE(USB_VENDOR_ID_HOLTEK_ALT, USB_DEVICE_ID_HOLTEK_ALT_MOUSE_A0C2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_HUION, USB_DEVICE_ID_HUION_TABLET) },
        { HID_USB_DEVICE(USB_VENDOR_ID_JESS2, USB_DEVICE_ID_JESS2_COLOR_RUMBLE_PAD) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ION, USB_DEVICE_ID_ICADE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_KENSINGTON, USB_DEVICE_ID_KS_SLIMBLADE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_KEYTOUCH, USB_DEVICE_ID_KEYTOUCH_IEC) },
        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GILA_GAMING_MOUSE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_MANTICORE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_GENIUS_GX_IMPERATOR) },
        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_ERGO_525V) },
        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_I405X) },
        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X) },
        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_MOUSEPEN_I608X_2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_EASYPEN_M610X) },
        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_PENSKETCH_M912) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LABTEC, USB_DEVICE_ID_LABTEC_WIRELESS_KEYBOARD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LCPOWER, USB_DEVICE_ID_LCPOWER_LC1000 ) },
#if IS_ENABLED(CONFIG_HID_LENOVO)
        { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPKBD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CUSBKBD) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_CBTKBD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LENOVO, USB_DEVICE_ID_LENOVO_TPPRODOCK) },
#endif
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_MX3000_RECEIVER) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_S510_RECEIVER_2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RECEIVER) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_HARMONY_PS3) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_T651) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_DESKTOP) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_EDGE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_DINOVO_MINI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_ELITE_KBD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_CORDLESS_DESKTOP_LX500) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_EXTREME_3D) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DUAL_ACTION) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WHEEL) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD_CORD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2_2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G29_WHEEL) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G920_WHEEL) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_F3D) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WINGMAN_FFG ) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FORCE3D_PRO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_FLIGHT_SYSTEM_G940) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_MOMO_WHEEL2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_VIBRATION_WHEEL) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFP_WHEEL) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_DFGT_WHEEL) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G25_WHEEL) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_G27_WHEEL) },
#if IS_ENABLED(CONFIG_HID_LOGITECH_DJ)
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_UNIFYING_RECEIVER_2) },
#endif
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_WII_WHEEL) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_LOGITECH_RUMBLEPAD2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACETRAVELLER) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LOGITECH, USB_DEVICE_ID_SPACENAVIGATOR) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICOLCD_BOOTLOADER) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_KEYBOARD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE7K) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_OFFICE_KB) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_PRO_3) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_PRO_3_2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_PRO_3_JP) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_TYPE_COVER_3) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_7K) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_600) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3KV1) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_POWER_COVER) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MONTEREY, USB_DEVICE_ID_GENIUS_KB29E) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MSI, USB_DEVICE_ID_MSI_GT683R_LED_PANEL) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_1) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_3) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_4) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_5) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_6) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_7) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_8) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_9) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_10) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_11) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_12) },

        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_13) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_14) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_15) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_16) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_17) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NTRIG, USB_DEVICE_ID_NTRIG_TOUCH_SCREEN_18) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_PKB1700) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ORTEK, USB_DEVICE_ID_ORTEK_WKB2000) },
        { HID_USB_DEVICE(USB_VENDOR_ID_PENMOUNT, USB_DEVICE_ID_PENMOUNT_6000) },
        { HID_USB_DEVICE(USB_VENDOR_ID_PETALYNX, USB_DEVICE_ID_PETALYNX_MAXTER_REMOTE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_PLANTRONICS, HID_ANY_ID) },
        { HID_USB_DEVICE(USB_VENDOR_ID_PRIMAX, USB_DEVICE_ID_PRIMAX_KEYBOARD) },
#if IS_ENABLED(CONFIG_HID_ROCCAT)
        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ARVO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKU) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_ISKUFX) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPLUS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEPURE_OPTICAL) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KONEXTD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_KOVAPLUS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_LUA) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRED) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_PYRA_WIRELESS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_GLOW) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_RYOS_MK_PRO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ROCCAT, USB_DEVICE_ID_ROCCAT_SAVU) },
#endif
#if IS_ENABLED(CONFIG_HID_SAITEK)
        { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_PS1000) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RAT7_OLD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_RAT7) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SAITEK, USB_DEVICE_ID_SAITEK_MMO7) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_RAT5) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_RAT9) },
#endif
        { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_IR_REMOTE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SAMSUNG, USB_DEVICE_ID_SAMSUNG_WIRELESS_KBD_MOUSE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SKYCABLE, USB_DEVICE_ID_SKYCABLE_WIRELESS_PRESENTER) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SMK, USB_DEVICE_ID_SMK_PS3_BDREMOTE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_BUZZ_CONTROLLER) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_WIRELESS_BUZZ_CONTROLLER) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_MOTION_CONTROLLER) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_MOTION_CONTROLLER) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_NAVIGATION_CONTROLLER) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_BDREMOTE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS3_CONTROLLER) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_PS4_CONTROLLER) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGX_MOUSE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SONY, USB_DEVICE_ID_SONY_VAIO_VGP_MOUSE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SINO_LITE, USB_DEVICE_ID_SINO_LITE_CONTROLLER) },
        { HID_USB_DEVICE(USB_VENDOR_ID_STEELSERIES, USB_DEVICE_ID_STEELSERIES_SRWS1) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SUNPLUS, USB_DEVICE_ID_SUNPLUS_WDESKTOP) },
        { HID_USB_DEVICE(USB_VENDOR_ID_THINGM, USB_DEVICE_ID_BLINK1) },
        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb300) },
        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb304) },
        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb323) },
        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb324) },
        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb651) },
        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb653) },
        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb654) },
        { HID_USB_DEVICE(USB_VENDOR_ID_THRUSTMASTER, 0xb65a) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_BT) },
        { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_TIVO, USB_DEVICE_ID_TIVO_SLIDE_PRO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED, USB_DEVICE_ID_TOPSEED_CYBERLINK) },
        { HID_USB_DEVICE(USB_VENDOR_ID_TOPSEED2, USB_DEVICE_ID_TOPSEED2_RF_COMBO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_TWINHAN, USB_DEVICE_ID_TWINHAN_IR_REMOTE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_PF1209) },
        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP4030U) },
        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP5540U) },
        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP8060U) },
        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_WP1062) },
        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_WIRELESS_TABLET_TWHL850) },
        { HID_USB_DEVICE(USB_VENDOR_ID_UCLOGIC, USB_DEVICE_ID_UCLOGIC_TABLET_TWHA60) },
        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SMARTJOY_PLUS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_SUPER_JOY_BOX_3) },
        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP, USB_DEVICE_ID_DUAL_USB_JOYPAD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_3_PRO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_DUAL_BOX_PRO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_WISEGROUP_LTD, USB_DEVICE_ID_SUPER_JOY_BOX_5_PRO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_PLAYDOTCOM, USB_DEVICE_ID_PLAYDOTCOM_EMS_USBII) },
        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_5_8_INCH) },
        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SLIM_TABLET_12_1_INCH) },
        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_Q_PAD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_PID_0038) },
        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_10_6_INCH) },
        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_MEDIA_TABLET_14_1_INCH) },
        { HID_USB_DEVICE(USB_VENDOR_ID_WALTOP, USB_DEVICE_ID_WALTOP_SIRIUS_BATTERY_FREE_TABLET) },
        { HID_USB_DEVICE(USB_VENDOR_ID_X_TENSIONS, USB_DEVICE_ID_SPEEDLINK_VAD_CEZANNE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_XIN_MO, USB_DEVICE_ID_XIN_MO_DUAL_ARCADE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0005) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ZEROPLUS, 0x0030) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ZYDACRON, USB_DEVICE_ID_ZYDACRON_REMOTE_CONTROL) },

        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_NINTENDO, USB_DEVICE_ID_NINTENDO_WIIMOTE2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_RAZER, USB_DEVICE_ID_RAZER_BLADE_14) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM6533) },
        { }
};

struct hid_dynid {
        struct list_head list;
        struct hid_device_id id;
};

/**
 * store_new_id - add a new HID device ID to this driver and re-probe devices
 * @driver: target device driver
 * @buf: buffer for scanning device ID data
 * @count: input size
 *
 * Adds a new dynamic hid device ID to this driver,
 * and causes the driver to probe for all devices again.
 */
static ssize_t store_new_id(struct device_driver *drv, const char *buf,
                size_t count)
{
        struct hid_driver *hdrv = to_hid_driver(drv);
        struct hid_dynid *dynid;
        __u32 bus, vendor, product;
        unsigned long driver_data = 0;
        int ret;

        ret = sscanf(buf, "%x %x %x %lx",
                        &bus, &vendor, &product, &driver_data);
        if (ret < 3)
                return -EINVAL;

        dynid = kzalloc(sizeof(*dynid), GFP_KERNEL);
        if (!dynid)
                return -ENOMEM;

        dynid->id.bus = bus;
        dynid->id.group = HID_GROUP_ANY;
        dynid->id.vendor = vendor;
        dynid->id.product = product;
        dynid->id.driver_data = driver_data;

        spin_lock(&hdrv->dyn_lock);
        list_add_tail(&dynid->list, &hdrv->dyn_list);
        spin_unlock(&hdrv->dyn_lock);

        ret = driver_attach(&hdrv->driver);

        return ret ? : count;
}
static DRIVER_ATTR(new_id, S_IWUSR, NULL, store_new_id);

static void hid_free_dynids(struct hid_driver *hdrv)
{
        struct hid_dynid *dynid, *n;

        spin_lock(&hdrv->dyn_lock);
        list_for_each_entry_safe(dynid, n, &hdrv->dyn_list, list) {
                list_del(&dynid->list);
                kfree(dynid);
        }
        spin_unlock(&hdrv->dyn_lock);
}

static const struct hid_device_id *hid_match_device(struct hid_device *hdev,
                struct hid_driver *hdrv)
{
        struct hid_dynid *dynid;

        spin_lock(&hdrv->dyn_lock);
        list_for_each_entry(dynid, &hdrv->dyn_list, list) {
                if (hid_match_one_id(hdev, &dynid->id)) {
                        spin_unlock(&hdrv->dyn_lock);
                        return &dynid->id;
                }
        }
        spin_unlock(&hdrv->dyn_lock);

        return hid_match_id(hdev, hdrv->id_table);
}

static int hid_bus_match(struct device *dev, struct device_driver *drv)
{
        struct hid_driver *hdrv = to_hid_driver(drv);
        struct hid_device *hdev = to_hid_device(dev);

        return hid_match_device(hdev, hdrv) != NULL;
}

static int hid_device_probe(struct device *dev)
{
        struct hid_driver *hdrv = to_hid_driver(dev->driver);
        struct hid_device *hdev = to_hid_device(dev);
        const struct hid_device_id *id;
        int ret = 0;

        if (down_interruptible(&hdev->driver_lock))
                return -EINTR;
        if (down_interruptible(&hdev->driver_input_lock)) {
                ret = -EINTR;
                goto unlock_driver_lock;
        }
        hdev->io_started = false;

        if (!hdev->driver) {
                id = hid_match_device(hdev, hdrv);
                if (id == NULL) {
                        ret = -ENODEV;
                        goto unlock;
                }

                hdev->driver = hdrv;
                if (hdrv->probe) {
                        ret = hdrv->probe(hdev, id);
                } else { /* default probe */
                        ret = hid_open_report(hdev);
                        if (!ret)
                                ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT);
                }
                if (ret) {
                        hid_close_report(hdev);
                        hdev->driver = NULL;
                }
        }
unlock:
        if (!hdev->io_started)
                up(&hdev->driver_input_lock);
unlock_driver_lock:
        up(&hdev->driver_lock);
        return ret;
}

static int hid_device_remove(struct device *dev)
{
        struct hid_device *hdev = to_hid_device(dev);
        struct hid_driver *hdrv;
        int ret = 0;

        if (down_interruptible(&hdev->driver_lock))
                return -EINTR;
        if (down_interruptible(&hdev->driver_input_lock)) {
                ret = -EINTR;
                goto unlock_driver_lock;
        }
        hdev->io_started = false;

        hdrv = hdev->driver;
        if (hdrv) {
                if (hdrv->remove)
                        hdrv->remove(hdev);
                else /* default remove */
                        hid_hw_stop(hdev);
                hid_close_report(hdev);
                hdev->driver = NULL;
        }

        if (!hdev->io_started)
                up(&hdev->driver_input_lock);
unlock_driver_lock:
        up(&hdev->driver_lock);
        return ret;
}

static ssize_t modalias_show(struct device *dev, struct device_attribute *a,
                             char *buf)
{
        struct hid_device *hdev = container_of(dev, struct hid_device, dev);

        return scnprintf(buf, PAGE_SIZE, "hid:b%04Xg%04Xv%08Xp%08X\n",
                         hdev->bus, hdev->group, hdev->vendor, hdev->product);
}
static DEVICE_ATTR_RO(modalias);

static struct attribute *hid_dev_attrs[] = {
        &dev_attr_modalias.attr,
        NULL,
};
static struct bin_attribute *hid_dev_bin_attrs[] = {
        &dev_bin_attr_report_desc,
        NULL
};
static const struct attribute_group hid_dev_group = {
        .attrs = hid_dev_attrs,
        .bin_attrs = hid_dev_bin_attrs,
};
__ATTRIBUTE_GROUPS(hid_dev);

static int hid_uevent(struct device *dev, struct kobj_uevent_env *env)
{
        struct hid_device *hdev = to_hid_device(dev);   

        if (add_uevent_var(env, "HID_ID=%04X:%08X:%08X",
                        hdev->bus, hdev->vendor, hdev->product))
                return -ENOMEM;

        if (add_uevent_var(env, "HID_NAME=%s", hdev->name))
                return -ENOMEM;

        if (add_uevent_var(env, "HID_PHYS=%s", hdev->phys))
                return -ENOMEM;

        if (add_uevent_var(env, "HID_UNIQ=%s", hdev->uniq))
                return -ENOMEM;

        if (add_uevent_var(env, "MODALIAS=hid:b%04Xg%04Xv%08Xp%08X",
                           hdev->bus, hdev->group, hdev->vendor, hdev->product))
                return -ENOMEM;

        return 0;
}

static struct bus_type hid_bus_type = {
        .name           = "hid",
        .dev_groups     = hid_dev_groups,
        .match          = hid_bus_match,
        .probe          = hid_device_probe,
        .remove         = hid_device_remove,
        .uevent         = hid_uevent,
};

/* a list of devices that shouldn't be handled by HID core at all */
static const struct hid_device_id hid_ignore_list[] = {
        { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_FLAIR) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ACECAD, USB_DEVICE_ID_ACECAD_302) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ADS_TECH, USB_DEVICE_ID_ADS_TECH_RADIO_SI470X) },
        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_01) },
        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_10) },
        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_20) },
        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_21) },
        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_22) },
        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_23) },
        { HID_USB_DEVICE(USB_VENDOR_ID_AIPTEK, USB_DEVICE_ID_AIPTEK_24) },
        { HID_USB_DEVICE(USB_VENDOR_ID_AIRCABLE, USB_DEVICE_ID_AIRCABLE1) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ALCOR, USB_DEVICE_ID_ALCOR_USBRS232) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM)},
        { HID_USB_DEVICE(USB_VENDOR_ID_ASUSTEK, USB_DEVICE_ID_ASUSTEK_LCM2)},
        { HID_USB_DEVICE(USB_VENDOR_ID_AVERMEDIA, USB_DEVICE_ID_AVER_FM_MR800) },
        { HID_USB_DEVICE(USB_VENDOR_ID_AXENTIA, USB_DEVICE_ID_AXENTIA_FM_RADIO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_BERKSHIRE, USB_DEVICE_ID_BERKSHIRE_PCWD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CIDC, 0x0103) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI470X) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CYGNAL, USB_DEVICE_ID_CYGNAL_RADIO_SI4713) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CMEDIA, USB_DEVICE_ID_CM109) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_HIDCOM) },
        { HID_USB_DEVICE(USB_VENDOR_ID_CYPRESS, USB_DEVICE_ID_CYPRESS_ULTRAMOUSE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_DEALEXTREAME, USB_DEVICE_ID_DEALEXTREAME_RADIO_SI4701) },
        { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EARTHMATE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_DELORME, USB_DEVICE_ID_DELORME_EM_LT20) },
        { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x0004) },
        { HID_USB_DEVICE(USB_VENDOR_ID_DREAM_CHEEKY, 0x000a) },
        { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, 0x0400) },
        { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, 0x0401) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ESSENTIAL_REALITY, USB_DEVICE_ID_ESSENTIAL_REALITY_P5) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC5UH) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ETT, USB_DEVICE_ID_TC4UM) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0001) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0002) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GENERAL_TOUCH, 0x0004) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_SUPER_Q2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_GOGOPEN) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GOTOP, USB_DEVICE_ID_PENPOWER) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GRETAGMACBETH, USB_DEVICE_ID_GRETAGMACBETH_HUEY) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_POWERMATE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_SOUNDKNOB) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GRIFFIN, USB_DEVICE_ID_RADIOSHARK) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_90) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_100) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_101) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_103) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_104) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_105) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_106) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_107) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_108) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_200) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_201) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_202) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_203) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_204) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_205) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_206) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_207) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_300) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_301) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_302) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_303) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_304) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_305) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_306) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_307) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_308) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_309) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_400) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_401) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_402) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_403) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_404) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_405) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_500) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_501) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_502) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_503) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_504) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1000) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1001) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1002) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1003) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1004) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1005) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1006) },
        { HID_USB_DEVICE(USB_VENDOR_ID_GTCO, USB_DEVICE_ID_GTCO_1007) },
        { HID_USB_DEVICE(USB_VENDOR_ID_IMATION, USB_DEVICE_ID_DISC_STAKKA) },
        { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_410) },
        { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_SPEAK_510) },
        { HID_USB_DEVICE(USB_VENDOR_ID_JABRA, USB_DEVICE_ID_JABRA_GN9350E) },
        { HID_USB_DEVICE(USB_VENDOR_ID_KBGEAR, USB_DEVICE_ID_KBGEAR_JAMSTUDIO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_KWORLD, USB_DEVICE_ID_KWORLD_RADIO_FM700) },
        { HID_USB_DEVICE(USB_VENDOR_ID_KYE, USB_DEVICE_ID_KYE_GPEN_560) },
        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_KYE, 0x0058) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_CASSY2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POCKETCASSY2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOBILECASSY2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYVOLTAGE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYCURRENT) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTIME) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYTEMPERATURE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MICROCASSYPH) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_JWM) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_DMMP) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIP) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIC) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_UMIB) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_XRAY2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_VIDEOCOM) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOTOR) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_COM3LAB) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_TELEPORT) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_NETWORKANALYSER) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_POWERCONTROL) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MACHINETEST) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MOSTANALYSER2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_ABSESP) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_AUTODATABUS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_MCT) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HYBRID) },
        { HID_USB_DEVICE(USB_VENDOR_ID_LD, USB_DEVICE_ID_LD_HEATCONTROL) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MADCATZ, USB_DEVICE_ID_MADCATZ_BEATPAD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1024LS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MCC, USB_DEVICE_ID_MCC_PMD1208LS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT1) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICKIT2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICK16F1454) },
        { HID_USB_DEVICE(USB_VENDOR_ID_MICROCHIP, USB_DEVICE_ID_PICK16F1454_V2) },
        { HID_USB_DEVICE(USB_VENDOR_ID_NATIONAL_SEMICONDUCTOR, USB_DEVICE_ID_N_S_HARMONY) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 20) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 30) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 100) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 108) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 118) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 200) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 300) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 400) },
        { HID_USB_DEVICE(USB_VENDOR_ID_ONTRAK, USB_DEVICE_ID_ONTRAK_ADU100 + 500) },
        { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0001) },
        { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0002) },
        { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0003) },
        { HID_USB_DEVICE(USB_VENDOR_ID_PANJIT, 0x0004) },
        { HID_USB_DEVICE(USB_VENDOR_ID_PHILIPS, USB_DEVICE_ID_PHILIPS_IEEE802154_DONGLE) },
        { HID_USB_DEVICE(USB_VENDOR_ID_POWERCOM, USB_DEVICE_ID_POWERCOM_UPS) },
#if defined(CONFIG_MOUSE_SYNAPTICS_USB) || defined(CONFIG_MOUSE_SYNAPTICS_USB_MODULE)
        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_TP) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_INT_TP) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_CPAD) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_STICK) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WP) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_COMP_TP) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_WTP) },
        { HID_USB_DEVICE(USB_VENDOR_ID_SYNAPTICS, USB_DEVICE_ID_SYNAPTICS_DPAD) },
#endif
        { HID_USB_DEVICE(USB_VENDOR_ID_YEALINK, USB_DEVICE_ID_YEALINK_P1K_P4K_B2K) },
        { HID_USB_DEVICE(USB_VENDOR_ID_RISO_KAGAKU, USB_DEVICE_ID_RI_KA_WEBMAIL) },
        { }
};

/**
 * hid_mouse_ignore_list - mouse devices which should not be handled by the hid layer
 *
 * There are composite devices for which we want to ignore only a certain
 * interface. This is a list of devices for which only the mouse interface will
 * be ignored. This allows a dedicated driver to take care of the interface.
 */
static const struct hid_device_id hid_mouse_ignore_list[] = {
        /* appletouch driver */
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER3_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER4_HF_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING2_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING3_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING4A_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING5A_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING6A_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING7A_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING8_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING9_ANSI) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING9_ISO) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_WELLSPRING9_JIS) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_FOUNTAIN_TP_ONLY) },
        { HID_USB_DEVICE(USB_VENDOR_ID_APPLE, USB_DEVICE_ID_APPLE_GEYSER1_TP_ONLY) },
        { }
};

bool hid_ignore(struct hid_device *hdev)
{
        if (hdev->quirks & HID_QUIRK_NO_IGNORE)
                return false;
        if (hdev->quirks & HID_QUIRK_IGNORE)
                return true;

        switch (hdev->vendor) {
        case USB_VENDOR_ID_CODEMERCS:
                /* ignore all Code Mercenaries IOWarrior devices */
                if (hdev->product >= USB_DEVICE_ID_CODEMERCS_IOW_FIRST &&
                                hdev->product <= USB_DEVICE_ID_CODEMERCS_IOW_LAST)
                        return true;
                break;
        case USB_VENDOR_ID_LOGITECH:
                if (hdev->product >= USB_DEVICE_ID_LOGITECH_HARMONY_FIRST &&
                                hdev->product <= USB_DEVICE_ID_LOGITECH_HARMONY_LAST)
                        return true;
                /*
                 * The Keene FM transmitter USB device has the same USB ID as
                 * the Logitech AudioHub Speaker, but it should ignore the hid.
                 * Check if the name is that of the Keene device.
                 * For reference: the name of the AudioHub is
                 * "HOLTEK  AudioHub Speaker".
                 */
                if (hdev->product == USB_DEVICE_ID_LOGITECH_AUDIOHUB &&
                        !strcmp(hdev->name, "HOLTEK  B-LINK USB Audio  "))
                                return true;
                break;
        case USB_VENDOR_ID_SOUNDGRAPH:
                if (hdev->product >= USB_DEVICE_ID_SOUNDGRAPH_IMON_FIRST &&
                    hdev->product <= USB_DEVICE_ID_SOUNDGRAPH_IMON_LAST)
                        return true;
                break;
        case USB_VENDOR_ID_HANWANG:
                if (hdev->product >= USB_DEVICE_ID_HANWANG_TABLET_FIRST &&
                    hdev->product <= USB_DEVICE_ID_HANWANG_TABLET_LAST)
                        return true;
                break;
        case USB_VENDOR_ID_JESS:
                if (hdev->product == USB_DEVICE_ID_JESS_YUREX &&
                                hdev->type == HID_TYPE_USBNONE)
                        return true;
                break;
        case USB_VENDOR_ID_VELLEMAN:
                /* These are not HID devices.  They are handled by comedi. */
                if ((hdev->product >= USB_DEVICE_ID_VELLEMAN_K8055_FIRST &&
                     hdev->product <= USB_DEVICE_ID_VELLEMAN_K8055_LAST) ||
                    (hdev->product >= USB_DEVICE_ID_VELLEMAN_K8061_FIRST &&
                     hdev->product <= USB_DEVICE_ID_VELLEMAN_K8061_LAST))
                        return true;
                break;
        case USB_VENDOR_ID_ATMEL_V_USB:
                /* Masterkit MA901 usb radio based on Atmel tiny85 chip and
                 * it has the same USB ID as many Atmel V-USB devices. This
                 * usb radio is handled by radio-ma901.c driver so we want
                 * ignore the hid. Check the name, bus, product and ignore
                 * if we have MA901 usb radio.
                 */
                if (hdev->product == USB_DEVICE_ID_ATMEL_V_USB &&
                        hdev->bus == BUS_USB &&
                        strncmp(hdev->name, "www.masterkit.ru MA901", 22) == 0)
                        return true;
                break;
        }

        if (hdev->type == HID_TYPE_USBMOUSE &&
                        hid_match_id(hdev, hid_mouse_ignore_list))
                return true;

        return !!hid_match_id(hdev, hid_ignore_list);
}
EXPORT_SYMBOL_GPL(hid_ignore);

int hid_add_device(struct hid_device *hdev)
{
        static atomic_t id = ATOMIC_INIT(0);
        int ret;

        if (WARN_ON(hdev->status & HID_STAT_ADDED))
                return -EBUSY;

        /* we need to kill them here, otherwise they will stay allocated to
         * wait for coming driver */
        if (hid_ignore(hdev))
                return -ENODEV;

        /*
         * Check for the mandatory transport channel.
         */
         if (!hdev->ll_driver->raw_request) {
                hid_err(hdev, "transport driver missing .raw_request()\n");
                return -EINVAL;
         }

        /*
         * Read the device report descriptor once and use as template
         * for the driver-specific modifications.
         */
        ret = hdev->ll_driver->parse(hdev);
        if (ret)
                return ret;
        if (!hdev->dev_rdesc)
                return -ENODEV;

        /*
         * Scan generic devices for group information
         */
        if (hid_ignore_special_drivers) {
                hdev->group = HID_GROUP_GENERIC;
        } else if (!hdev->group &&
                   !hid_match_id(hdev, hid_have_special_driver)) {
                ret = hid_scan_report(hdev);
                if (ret)
                        hid_warn(hdev, "bad device descriptor (%d)\n", ret);
        }

        /* XXX hack, any other cleaner solution after the driver core
         * is converted to allow more than 20 bytes as the device name? */
        dev_set_name(&hdev->dev, "%04X:%04X:%04X.%04X", hdev->bus,
                     hdev->vendor, hdev->product, atomic_inc_return(&id));

        hid_debug_register(hdev, dev_name(&hdev->dev));
        ret = device_add(&hdev->dev);
        if (!ret)
                hdev->status |= HID_STAT_ADDED;
        else
                hid_debug_unregister(hdev);

        return ret;
}
EXPORT_SYMBOL_GPL(hid_add_device);

/**
 * hid_allocate_device - allocate new hid device descriptor
 *
 * Allocate and initialize hid device, so that hid_destroy_device might be
 * used to free it.
 *
 * New hid_device pointer is returned on success, otherwise ERR_PTR encoded
 * error value.
 */
struct hid_device *hid_allocate_device(void)
{
        struct hid_device *hdev;
        int ret = -ENOMEM;

        hdev = kzalloc(sizeof(*hdev), GFP_KERNEL);
        if (hdev == NULL)
                return ERR_PTR(ret);

        device_initialize(&hdev->dev);
        hdev->dev.release = hid_device_release;
        hdev->dev.bus = &hid_bus_type;
        device_enable_async_suspend(&hdev->dev);

        hid_close_report(hdev);

        init_waitqueue_head(&hdev->debug_wait);
        INIT_LIST_HEAD(&hdev->debug_list);
        spin_lock_init(&hdev->debug_list_lock);
        sema_init(&hdev->driver_lock, 1);
        sema_init(&hdev->driver_input_lock, 1);

        return hdev;
}
EXPORT_SYMBOL_GPL(hid_allocate_device);

static void hid_remove_device(struct hid_device *hdev)
{
        if (hdev->status & HID_STAT_ADDED) {
                device_del(&hdev->dev);
                hid_debug_unregister(hdev);
                hdev->status &= ~HID_STAT_ADDED;
        }
        kfree(hdev->dev_rdesc);
        hdev->dev_rdesc = NULL;
        hdev->dev_rsize = 0;
}

/**
 * hid_destroy_device - free previously allocated device
 *
 * @hdev: hid device
 *
 * If you allocate hid_device through hid_allocate_device, you should ever
 * free by this function.
 */
void hid_destroy_device(struct hid_device *hdev)
{
        hid_remove_device(hdev);
        put_device(&hdev->dev);
}
EXPORT_SYMBOL_GPL(hid_destroy_device);

int __hid_register_driver(struct hid_driver *hdrv, struct module *owner,
                const char *mod_name)
{
        int ret;

        hdrv->driver.name = hdrv->name;
        hdrv->driver.bus = &hid_bus_type;
        hdrv->driver.owner = owner;
        hdrv->driver.mod_name = mod_name;

        INIT_LIST_HEAD(&hdrv->dyn_list);
        spin_lock_init(&hdrv->dyn_lock);

        ret = driver_register(&hdrv->driver);
        if (ret)
                return ret;

        ret = driver_create_file(&hdrv->driver, &driver_attr_new_id);
        if (ret)
                driver_unregister(&hdrv->driver);

        return ret;
}
EXPORT_SYMBOL_GPL(__hid_register_driver);

void hid_unregister_driver(struct hid_driver *hdrv)
{
        driver_remove_file(&hdrv->driver, &driver_attr_new_id);
        driver_unregister(&hdrv->driver);
        hid_free_dynids(hdrv);
}
EXPORT_SYMBOL_GPL(hid_unregister_driver);

int hid_check_keys_pressed(struct hid_device *hid)
{
        struct hid_input *hidinput;
        int i;

        if (!(hid->claimed & HID_CLAIMED_INPUT))
                return 0;

        list_for_each_entry(hidinput, &hid->inputs, list) {
                for (i = 0; i < BITS_TO_LONGS(KEY_MAX); i++)
                        if (hidinput->input->key[i])
                                return 1;
        }

        return 0;
}

EXPORT_SYMBOL_GPL(hid_check_keys_pressed);

static int __init hid_init(void)
{
        int ret;

        if (hid_debug)
                pr_warn("hid_debug is now used solely for parser and driver debugging.\n"
                        "debugfs is now used for inspecting the device (report descriptor, reports)\n");

        ret = bus_register(&hid_bus_type);
        if (ret) {
                pr_err("can't register hid bus\n");
                goto err;
        }

        ret = hidraw_init();
        if (ret)
                goto err_bus;

        hid_debug_init();

        return 0;
err_bus:
        bus_unregister(&hid_bus_type);
err:
        return ret;
}

static void __exit hid_exit(void)
{
        hid_debug_exit();
        hidraw_exit();
        bus_unregister(&hid_bus_type);
}

module_init(hid_init);
module_exit(hid_exit);

MODULE_AUTHOR("Andreas Gal");
MODULE_AUTHOR("Vojtech Pavlik");
MODULE_AUTHOR("Jiri Kosina");
MODULE_LICENSE(DRIVER_LICENSE);