67 lines
2.1 KiB
C
67 lines
2.1 KiB
C
/* $NetBSD: usbroothub_subr.c,v 1.3 2015/11/19 00:40:43 christos Exp $ */
|
|
|
|
/*
|
|
* Copyright (c) 2008
|
|
* Matthias Drochner. All rights reserved.
|
|
*
|
|
* 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.
|
|
*
|
|
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``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 AUTHOR 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.
|
|
*
|
|
*/
|
|
|
|
#include <dev/usb/usb.h>
|
|
#include <dev/usb/usbroothub_subr.h>
|
|
|
|
/* helper functions for USB root hub emulation */
|
|
|
|
int
|
|
usb_makestrdesc(usb_string_descriptor_t *p, int l, const char *s)
|
|
{
|
|
int i;
|
|
|
|
if (l == 0)
|
|
return (0);
|
|
p->bLength = 2 * strlen(s) + 2;
|
|
if (l == 1)
|
|
return (1);
|
|
p->bDescriptorType = UDESC_STRING;
|
|
l -= 2;
|
|
/* poor man's utf-16le conversion */
|
|
for (i = 0; s[i] && l > 1; i++, l -= 2)
|
|
USETW2(p->bString[i], 0, s[i]);
|
|
return (2 * i + 2);
|
|
}
|
|
|
|
int
|
|
usb_makelangtbl(usb_string_descriptor_t *p, int l)
|
|
{
|
|
|
|
if (l == 0)
|
|
return (0);
|
|
p->bLength = 4;
|
|
if (l == 1)
|
|
return (1);
|
|
p->bDescriptorType = UDESC_STRING;
|
|
if (l < 4)
|
|
return (2);
|
|
USETW(p->bString[0], 0x0409); /* english/US */
|
|
return (4);
|
|
}
|