NAME
uhid — USB generic HID supportSYNOPSIS
To compile this driver into the kernel, place the following line in your kernel configuration file:device
uhid
Alternatively, to load the driver as a module at boot time, place the following
line in loader.conf(5):
uhid_load="YES"
DESCRIPTION
The uhid driver provides support for all HID (Human Interface Device) interfaces in USB devices that do not have a special driver. The device handles the following ioctl(2) calls:-
USB_GET_REPORT_ID(int) - Get the report identifier used by this HID report.
-
USB_GET_REPORT_DESC(struct usb_gen_descriptor) - Get the HID report descriptor. Copies a maximum of ugd_maxlen bytes of the report descriptor data into the memory specified by ugd_data. Upon return ugd_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.
-
USB_SET_IMMED(int) - Sets the device in a mode where each read(2) will return the current value of the input report. Normally a 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.
-
USB_GET_REPORT(struct usb_gen_descriptor) - Get a report from the device without waiting for data on
the interrupt pipe. Copies a maximum of
ugd_maxlen bytes of the report data into
the memory specified by ugd_data. Upon
return ugd_actlen is set to the number of
bytes copied. The ugd_report_type field
indicates which report is requested. It should be
UHID_INPUT_REPORT,UHID_OUTPUT_REPORT, orUHID_FEATURE_REPORT. This call may fail if the device does not support this feature. -
USB_SET_REPORT(struct usb_gen_descriptor) - Set a report in the device. The
ugd_report_type field indicates which
report is to be set. It should be
UHID_INPUT_REPORT,UHID_OUTPUT_REPORT, orUHID_FEATURE_REPORT. The value of the report is specified by the ugd_data and the ugd_maxlen fields. This call may fail if the device does not support this feature.
SYSCTL VARIABLES
The following variables are available as both sysctl(8) variables and loader(8) tunables:- hw.usb.uhid.debug
- Debug output level, where 0 is debugging disabled and larger values increase debug message verbosity. Default is 0.
FILES
- /dev/uhid?
SEE ALSO
usbhidctl(1), usb(4)HISTORY
The uhid driver appeared in NetBSD 1.4. This manual page was adopted from NetBSD by Tom Rhodes <[email protected]> in April 2002.| July 1, 2018 | Debian |