144 lines
4.3 KiB
Groff
144 lines
4.3 KiB
Groff
.\" $NetBSD: uhid.4,v 1.13 2001/12/29 14:41:59 augustss Exp $
|
|
.\"
|
|
.\" Copyright (c) 1999, 2001 The NetBSD Foundation, Inc.
|
|
.\" All rights reserved.
|
|
.\"
|
|
.\" This code is derived from software contributed to The NetBSD Foundation
|
|
.\" by Lennart Augustsson.
|
|
.\"
|
|
.\" 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 acknowledgment:
|
|
.\" 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.
|
|
.\"
|
|
.\" $FreeBSD$
|
|
.\"
|
|
.Dd July 12, 1998
|
|
.Dt UHID 4
|
|
.Os
|
|
.Sh NAME
|
|
.Nm uhid
|
|
.Nd USB generic HID support
|
|
.Sh SYNOPSIS
|
|
.Cd "device uhid"
|
|
.Sh DESCRIPTION
|
|
The
|
|
.Nm
|
|
driver provides support for all HID (Human Interface Device) interfaces
|
|
in USB devices that do not have a special driver.
|
|
.Pp
|
|
The device handles the following
|
|
.Xr ioctl 2
|
|
calls:
|
|
.Bl -tag -width indent
|
|
.It Dv USB_GET_REPORT_ID Pq Vt int
|
|
Get the report identifier used by this HID report.
|
|
.It Dv USB_GET_REPORT_DESC Pq Vt "struct usb_ctl_report_desc"
|
|
Get the HID report descriptor.
|
|
Using
|
|
this descriptor the exact layout and meaning of data to/from
|
|
the device can be found.
|
|
The report descriptor is delivered
|
|
without any processing.
|
|
.Bd -literal
|
|
struct usb_ctl_report_desc {
|
|
int size;
|
|
u_char data[1024]; /* filled data size will vary */
|
|
};
|
|
.Ed
|
|
.It Dv USB_SET_IMMED Pq Vt int
|
|
Sets the device in a mode where each
|
|
.Xr read 2
|
|
will return the current value of the input report.
|
|
Normally
|
|
a
|
|
.Xr read 2
|
|
will only return the data that the device reports on its
|
|
interrupt pipe.
|
|
This call may fail if the device does not support
|
|
this feature.
|
|
.It Dv USB_GET_REPORT Pq Vt "struct usb_ctl_report"
|
|
Get a report from the device without waiting for data on
|
|
the interrupt pipe.
|
|
The
|
|
.Va report
|
|
field indicates which report is requested.
|
|
It should be
|
|
.Dv UHID_INPUT_REPORT ,
|
|
.Dv UHID_OUTPUT_REPORT ,
|
|
or
|
|
.Dv UHID_FEATURE_REPORT .
|
|
This call may fail if the device does not support this feature.
|
|
.Bd -literal
|
|
struct usb_ctl_report {
|
|
int report;
|
|
u_char data[1024]; /* used data size will vary */
|
|
};
|
|
.Ed
|
|
.It Dv USB_SET_REPORT Pq Vt "struct usb_ctl_report"
|
|
Set a report in the device.
|
|
The
|
|
.Va report
|
|
field indicates which report is to be set.
|
|
It should be
|
|
.Dv UHID_INPUT_REPORT ,
|
|
.Dv UHID_OUTPUT_REPORT ,
|
|
or
|
|
.Dv UHID_FEATURE_REPORT .
|
|
This call may fail if the device does not support this feature.
|
|
.El
|
|
.Pp
|
|
Use
|
|
.Xr read 2
|
|
to get data from the device.
|
|
Data should be read in chunks of the
|
|
size prescribed by the report descriptor.
|
|
.Pp
|
|
Use
|
|
.Xr write 2
|
|
to send data to the device.
|
|
Data should be written in chunks of the
|
|
size prescribed by the report descriptor.
|
|
.Sh FILES
|
|
.Bl -tag -width ".Pa /dev/uhid?"
|
|
.It Pa /dev/uhid?
|
|
.El
|
|
.Sh SEE ALSO
|
|
.Xr usbhidctl 1 ,
|
|
.Xr uhidev 4 ,
|
|
.Xr usb 4
|
|
.Sh HISTORY
|
|
The
|
|
.Nm
|
|
driver
|
|
appeared in
|
|
.Nx 1.4 .
|
|
This manual page was adopted from
|
|
.Nx
|
|
by
|
|
.An Tom Rhodes Aq trhodes@FreeBSD.org
|
|
in April 2002.
|