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uhid(4)

To  compile this driver into the kernel, place the following line
in your kernel configuration file:  Alternatively,  to  load  the
driver  as  a  module  at  boot time, place the following line in
uhid_load="YES" The 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 calls: Get  the
report  identifier  used  by this HID report.  Get the HID report
descriptor.  Copies a maximum of bytes of the  report  descriptor
data  into the memory specified by Upon return is set to the num‐
ber of bytes copied.  Using this descriptor the exact layout  and
meaning  of data to/from the device can be found.  The report de‐
scriptor is delivered without any processing.  struct usb_gen_de‐
scriptor {         void   *ugd_data;         uint16_t ugd_maxlen;
        uint16_t   ugd_actlen;           uint8_t ugd_report_type;
        ...   }; Sets the device in a mode where each will return
the current value of the input report.  Normally a will only  re‐
turn  the  data  that  the  device reports on its interrupt pipe.
This call may fail if the device does not support  this  feature.
Get  a report from the device without waiting for data on the in‐
terrupt pipe.  Copies a maximum of bytes of the report data  into
the memory specified by Upon return is set to the number of bytes
copied.   The  field  indicates  which  report  is requested.  It
should be or This call may fail if the device  does  not  support
this  feature.   Set a report in the device.  The field indicates
which report is to be set.  It should be or The value of the  re‐
port  is  specified by the and the fields.  This call may fail if
the device does not support this feature.  Use to get  data  from
the device.  Data should be read in chunks of the size prescribed
by  the report descriptor.  Use to send data to the device.  Data
should be written in chunks of the size prescribed by the  report
descriptor.   The following variables are available as both vari‐
ables and tunables: Debug output level, where 0 is debugging dis‐
abled and larger values increase debug  message  verbosity.   De‐
fault  is 0.  The driver appeared in This manual page was adopted
from by in April 2002.































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