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Diffstat (limited to 'share/man/man4')
| -rw-r--r-- | share/man/man4/Makefile | 1 | ||||
| -rw-r--r-- | share/man/man4/hidraw.4 | 308 |
2 files changed, 309 insertions, 0 deletions
diff --git a/share/man/man4/Makefile b/share/man/man4/Makefile index 4fd816804062..02d1bca75a3f 100644 --- a/share/man/man4/Makefile +++ b/share/man/man4/Makefile @@ -182,6 +182,7 @@ MAN= aac.4 \ hconf.4 \ hidbus.4 \ hidquirk.4 \ + hidraw.4 \ hifn.4 \ hkbd.4 \ hmt.4 \ diff --git a/share/man/man4/hidraw.4 b/share/man/man4/hidraw.4 new file mode 100644 index 000000000000..7012089e354b --- /dev/null +++ b/share/man/man4/hidraw.4 @@ -0,0 +1,308 @@ +.\" $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. +.\" +.\" 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 1, 2018 +.Dt HIDRAW 4 +.Os +.Sh NAME +.Nm hidraw +.Nd Raw Access to HID devices +.Sh SYNOPSIS +To compile this driver into the kernel, +place the following line in your +kernel configuration file: +.Bd -ragged -offset indent +.Cd "device hidraw" +.Cd "device hid" +.Cd "device hidbus" +.Ed +.Pp +Alternatively, to load the driver as a +module at boot time, place the following line in +.Xr loader.conf 5 : +.Bd -literal -offset indent +hidraw_load="YES" +.Ed +.Sh DESCRIPTION +The +.Nm +driver provides a raw interface to Human Interface Devices (HIDs). +The reports are sent to and received from the device unmodified. +.Pp +The device handles 2 sets of +.Xr ioctl 2 +calls: +.Pp +.Fx +.Xr uhid 4 +\-compatible calls: +.Bl -tag -width indent +.It Dv HID_GET_REPORT_ID Pq Vt int +Get the report identifier used by this HID report. +.It Dv HID_GET_REPORT_DESC Pq Vt "struct hidraw_gen_descriptor" +Get the HID report descriptor. +Copies a maximum of +.Va hgd_maxlen +bytes of the report descriptor data into the memory +specified by +.Va hgd_data . +Upon return +.Va hgd_actlen +is set to the number of bytes copied. +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 hidraw_gen_descriptor { + void *hgd_data; + uint16_t hgd_maxlen; + uint16_t hgd_actlen; + uint8_t hgd_report_type; + ... +}; +.Ed +.It Dv HID_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 HID_GET_REPORT Pq Vt "struct hidraw_gen_descriptor" +Get a report from the device without waiting for data on +the interrupt pipe. +Copies a maximum of +.Va hgd_maxlen +bytes of the report data into the memory specified by +.Va hgd_data . +Upon return +.Va hgd_actlen +is set to the number of bytes copied. +The +.Va hgd_report_type +field indicates which report is requested. +It should be +.Dv HID_INPUT_REPORT , +.Dv HID_OUTPUT_REPORT , +or +.Dv HID_FEATURE_REPORT . +On a device which uses numbered reports, the first byte of the returned data +is the report number. +The report data begins from the second byte. +For devices which do not use numbered reports, the report data begins at the +first byte. +This call may fail if the device does not support this feature. +.It Dv HID_SET_REPORT Pq Vt "struct hidraw_gen_descriptor" +Set a report in the device. +The +.Va hgd_report_type +field indicates which report is to be set. +It should be +.Dv HID_INPUT_REPORT , +.Dv HID_OUTPUT_REPORT , +or +.Dv HID_FEATURE_REPORT . +The value of the report is specified by the +.Va hgd_data +and the +.Va hgd_maxlen +fields. +On a device which uses numbered reports, the first byte of data to be sent is +the report number. +The report data begins from the second byte. +For devices which do not use numbered reports, the report data begins at the +first byte. +This call may fail if the device does not support this feature. +.El +.Pp +Linux +.Nm +\-compatible calls: +.Bl -tag -width indent +.It Dv HIDIOCGRDESCSIZE Pq Vt int +Get the HID report descriptor size. +Returns the size of the device report descriptor to use with +.Dv HIDIOCGRDESC +.Xr ioctl 2 . +.It Dv HIDIOCGRDESC Pq Vt "struct hidraw_report_descriptor" +Get the HID report descriptor. +Copies a maximum of +.Va size +bytes of the report descriptor data into the memory +specified by +.Va value . +.Bd -literal +struct hidraw_report_descriptor { + uint32_t size; + uint8_t value[HID_MAX_DESCRIPTOR_SIZE]; +}; +.Ed +.It Dv HIDIOCGRAWINFO Pq Vt "struct hidraw_devinfo" +Get structure containing the bus type, the vendor ID (VID), and product ID +(PID) of the device. The bus type can be one of: +.Dv BUS_USB +or +.Dv BUS_I2C +which are defined in dev/evdev/input.h. +.Bd -literal +struct hidraw_devinfo { + uint32_t bustype; + int16_t vendor; + int16_t product; +}; +.Ed +.It Dv HIDIOCGRAWNAME(len) Pq Vt "char[] buf" +Get device description. +Copies a maximum of +.Va len +bytes of the device description previously set with +.Xr device_set_desc 9 +procedure into the memory +specified by +.Va buf . +.It Dv HIDIOCGRAWPHYS(len) Pq Vt "char[] buf" +Get the newbus path to the device. +.\For Bluetooth devices, it returns the hardware (MAC) address of the device. +Copies a maximum of +.Va len +bytes of the newbus device path +into the memory +specified by +.Va buf . +.It Dv HIDIOCGFEATURE(len) Pq Vt "void[] buf" +Get a feature report from the device. +Copies a maximum of +.Va len +bytes of the feature report data into the memory specified by +.Va buf . +The first byte of the supplied buffer should be set to the report +number of the requested report. +For devices which do not use numbered reports, set the first byte to 0. +The report will be returned starting at the first byte of the buffer +(ie: the report number is not returned). +This call may fail if the device does not support this feature. +.It Dv HIDIOCSFEATURE(len) Pq Vt "void[] buf" +Set a feature Report in the device. +The value of the report is specified by the +.Va buf +and the +.Va len +parameters. +Set the first byte of the supplied buffer to the report number. +For devices which do not use numbered reports, set the first byte to 0. +The report data begins in the second byte. +Make sure to set len accordingly, to one more than the length of the report +(to account for the report number). +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. +On a device which uses numbered reports, the first byte of the returned data +is the report number. +The report data begins from the second byte. +For devices which do not use numbered reports, the report data begins at the +first byte. +.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. +The first byte of the buffer passed to +.Xr write 2 +should be set to the report number. +If the device does not use numbered reports, there are 2 operation modes: +.Nm +mode and +.Xr uhid 4 +mode. +In the +.Nm +mode, the first byte should be set to 0 and the report data itself should +begin at the second byte. +In the +.Xr uhid 4 +mode, the report data should begin at the first byte. +The modes can be switched with issuing one of +.Dv HIDIOCGRDESC +or +.Dv HID_GET_REPORT_DESC +.Xr ioctl 2 +accordingly. +Default mode is +.Nm . +.Sh SYSCTL VARIABLES +The following variables are available as both +.Xr sysctl 8 +variables and +.Xr loader 8 +tunables: +.Bl -tag -width indent +.It Va hw.hid.hidraw.debug +Debug output level, where 0 is debugging disabled and larger values increase +debug message verbosity. +Default is 0. +.El +.Sh FILES +.Bl -tag -width ".Pa /dev/hidraw?" +.It Pa /dev/hidraw? +.El +.Sh SEE ALSO +.Xr usbhidctl 1 , +.Xr hid 4 , +.Xr hidbus 4 , +.Xr uhid 4 +.Sh HISTORY +The +.Xr uhid 4 +driver +appeared in +.Nx 1.4 . +.Nm +protocol support was added in +.Fx 13 +by +.An Vladimir Kondratyev Aq Mt wulf@FreeBSD.org . +This manual page was adopted from +.Nx +by +.An Tom Rhodes Aq Mt trhodes@FreeBSD.org +in April 2002. |