1 /* $NetBSD: descr.c,v 1.9 2000/09/24 02:13:24 augustss Exp $ */
4 * Copyright (c) 1999 Lennart Augustsson <augustss@netbsd.org>
7 * Redistribution and use in source and binary forms, with or without
8 * modification, are permitted provided that the following conditions
10 * 1. Redistributions of source code must retain the above copyright
11 * notice, this list of conditions and the following disclaimer.
12 * 2. Redistributions in binary form must reproduce the above copyright
13 * notice, this list of conditions and the following disclaimer in the
14 * documentation and/or other materials provided with the distribution.
16 * THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
17 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
18 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
19 * ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
20 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
21 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
22 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
23 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
24 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
25 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
28 * $FreeBSD: head/lib/libusbhid/descr.c 240762 2012-09-20 18:56:27Z mav $
31 #include <sys/types.h>
39 #include <sys/ioctl.h>
40 #include <bus/u4b/usb_ioctl.h>
46 hid_set_immed(int fd, int enable)
49 ret = ioctl(fd, USB_SET_IMMED, &enable);
52 ret = hid_set_immed_compat7(fd, enable);
58 hid_get_report_id(int fd)
67 if ((rep = hid_get_report_desc(fd)) == NULL)
69 kindset = 1 << hid_input | 1 << hid_output | 1 << hid_feature;
70 for (d = hid_start_parse(rep, kindset, -1); hid_get_item(d, &h); ) {
71 /* Return the first report ID we met. */
72 if (h.report_ID != 0) {
78 hid_dispose_report_desc(rep);
84 ret = ioctl(fd, USB_GET_REPORT_ID, &temp);
87 ret = hid_get_report_id_compat7(fd);
96 hid_get_report_desc(int fd)
98 struct usb_gen_descriptor ugd;
102 memset(&ugd, 0, sizeof(ugd));
104 /* get actual length first */
105 ugd.ugd_data = hid_pass_ptr(NULL);
106 ugd.ugd_maxlen = 65535;
107 if (ioctl(fd, USB_GET_REPORT_DESC, &ugd) < 0) {
109 /* could not read descriptor */
110 /* try FreeBSD 7 compat code */
111 return (hid_get_report_desc_compat7(fd));
118 * NOTE: The kernel will return a failure if
119 * "ugd_actlen" is zero.
121 data = malloc(ugd.ugd_actlen);
125 /* fetch actual descriptor */
126 ugd.ugd_data = hid_pass_ptr(data);
127 ugd.ugd_maxlen = ugd.ugd_actlen;
128 if (ioctl(fd, USB_GET_REPORT_DESC, &ugd) < 0) {
129 /* could not read descriptor */
135 if (ugd.ugd_actlen < 1) {
136 /* invalid report descriptor */
141 /* check END_COLLECTION */
142 if (((unsigned char *)data)[ugd.ugd_actlen -1] != 0xC0) {
143 /* invalid end byte */
148 rep = hid_use_report_desc(data, ugd.ugd_actlen);
156 hid_use_report_desc(unsigned char *data, unsigned int size)
160 r = malloc(sizeof(*r) + size);
166 memcpy(r->data, data, size);
171 hid_dispose_report_desc(report_desc_t r)