1 /* $NetBSD: descr.c,v 1.9 2000/09/24 02:13:24 augustss Exp $ */
4 * SPDX-License-Identifier: BSD-2-Clause-NetBSD
6 * Copyright (c) 1999 Lennart Augustsson <augustss@netbsd.org>
9 * Redistribution and use in source and binary forms, with or without
10 * modification, are permitted provided that the following conditions
12 * 1. Redistributions of source code must retain the above copyright
13 * notice, this list of conditions and the following disclaimer.
14 * 2. Redistributions in binary form must reproduce the above copyright
15 * notice, this list of conditions and the following disclaimer in the
16 * documentation and/or other materials provided with the distribution.
18 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
19 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
20 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
21 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
22 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
23 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
24 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
25 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
26 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
27 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
31 #include <sys/cdefs.h>
32 __FBSDID("$FreeBSD$");
34 #include <sys/types.h>
42 #include <sys/ioctl.h>
43 #include <dev/usb/usb_ioctl.h>
49 hid_set_immed(int fd, int enable)
52 ret = ioctl(fd, USB_SET_IMMED, &enable);
55 ret = hid_set_immed_compat7(fd, enable);
61 hid_get_report_id(int fd)
70 if ((rep = hid_get_report_desc(fd)) == NULL)
72 kindset = 1 << hid_input | 1 << hid_output | 1 << hid_feature;
73 for (d = hid_start_parse(rep, kindset, -1); hid_get_item(d, &h); ) {
74 /* Return the first report ID we met. */
75 if (h.report_ID != 0) {
81 hid_dispose_report_desc(rep);
87 ret = ioctl(fd, USB_GET_REPORT_ID, &temp);
90 ret = hid_get_report_id_compat7(fd);
99 hid_get_report_desc(int fd)
101 struct usb_gen_descriptor ugd;
105 memset(&ugd, 0, sizeof(ugd));
107 /* get actual length first */
108 ugd.ugd_data = hid_pass_ptr(NULL);
109 ugd.ugd_maxlen = 65535;
110 if (ioctl(fd, USB_GET_REPORT_DESC, &ugd) < 0) {
112 /* could not read descriptor */
113 /* try FreeBSD 7 compat code */
114 return (hid_get_report_desc_compat7(fd));
121 * NOTE: The kernel will return a failure if
122 * "ugd_actlen" is zero.
124 data = malloc(ugd.ugd_actlen);
128 /* fetch actual descriptor */
129 ugd.ugd_data = hid_pass_ptr(data);
130 ugd.ugd_maxlen = ugd.ugd_actlen;
131 if (ioctl(fd, USB_GET_REPORT_DESC, &ugd) < 0) {
132 /* could not read descriptor */
138 if (ugd.ugd_actlen < 1) {
139 /* invalid report descriptor */
144 /* check END_COLLECTION */
145 if (((unsigned char *)data)[ugd.ugd_actlen -1] != 0xC0) {
146 /* invalid end byte */
151 rep = hid_use_report_desc(data, ugd.ugd_actlen);
159 hid_use_report_desc(unsigned char *data, unsigned int size)
163 r = malloc(sizeof(*r) + size);
169 memcpy(r->data, data, size);
174 hid_dispose_report_desc(report_desc_t r)