FreeBSD/Linux Kernel Cross Reference
sys/dev/usb/hid.h

     /*      $NetBSD: hid.h,v 1.8 2002/07/11 21:14:25 augustss Exp $ */
     /*      $FreeBSD: src/sys/dev/usb/hid.h,v 1.7 1999/11/17 22:33:40 n_hibma Exp $ */
     
     /*
      * Copyright (c) 1998 The NetBSD Foundation, Inc.
      * All rights reserved.
      *
      * This code is derived from software contributed to The NetBSD Foundation
      * by Lennart Augustsson (lennart@augustsson.net) at
     * Carlstedt Research & Technology.
     *
     * Redistribution and use in source and binary forms, with or without
     * modification, are permitted provided that the following conditions
     * are met:
     * 1. Redistributions of source code must retain the above copyright
     *    notice, this list of conditions and the following disclaimer.
     * 2. Redistributions in binary form must reproduce the above copyright
     *    notice, this list of conditions and the following disclaimer in the
     *    documentation and/or other materials provided with the distribution.
     * 3. All advertising materials mentioning features or use of this software
     *    must display the following acknowledgement:
     *        This product includes software developed by the NetBSD
     *        Foundation, Inc. and its contributors.
     * 4. Neither the name of The NetBSD Foundation nor the names of its
     *    contributors may be used to endorse or promote products derived
     *    from this software without specific prior written permission.
     *
     * THIS SOFTWARE IS PROVIDED BY THE NETBSD FOUNDATION, INC. AND CONTRIBUTORS
     * ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED
     * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
     * PURPOSE ARE DISCLAIMED.  IN NO EVENT SHALL THE FOUNDATION OR CONTRIBUTORS
     * BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
     * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
     * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
     * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
     * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
     * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
     * POSSIBILITY OF SUCH DAMAGE.
     */
    
    enum hid_kind {
            hid_input,
            hid_output,
            hid_feature,
            hid_collection,
            hid_endcollection,
            hid_none
    };
    
    struct hid_location {
            u_int32_t size;
            u_int32_t count;
            u_int32_t pos;
    };
    
    struct hid_item {
            /* Global */
            int32_t _usage_page;
            int32_t logical_minimum;
            int32_t logical_maximum;
            int32_t physical_minimum;
            int32_t physical_maximum;
            int32_t unit_exponent;
            int32_t unit;
            int32_t report_ID;
            /* Local */
            int32_t usage;
            int32_t usage_minimum;
            int32_t usage_maximum;
            int32_t designator_index;
            int32_t designator_minimum;
            int32_t designator_maximum;
            int32_t string_index;
            int32_t string_minimum;
            int32_t string_maximum;
            int32_t set_delimiter;
            /* Misc */
            int32_t collection;
            int collevel;
            enum hid_kind kind;
            u_int32_t flags;
            /* Location */
            struct hid_location loc;
            /* */
            struct hid_item *next;
    };
    
    struct hid_data *hid_start_parse(void *d, int len, enum hid_kind kind);
    void hid_end_parse(struct hid_data *s);
    int hid_get_item(struct hid_data *s, struct hid_item *h);
    int hid_report_size(void *buf, int len, enum hid_kind k, u_int8_t id);
    int hid_locate(void *desc, int size, u_int32_t usage, u_int8_t id,
                   enum hid_kind kind, struct hid_location *loc, u_int32_t *flags);
    u_long hid_get_data(u_char *buf, struct hid_location *loc);
    int hid_is_collection(void *desc, int size, u_int8_t id, u_int32_t usage);

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