IICHID(4) FreeBSD Kernel Interfaces Manual IICHID(4)
NAME
iichid - I2C HID transport driver
SYNOPSIS
To compile this driver into the kernel, place the following lines in your
kernel configuration file:
device iichid
Alternatively, to load the driver as a module at boot time, place the
following line in loader.conf(5):
iichid_load="YES"
DESCRIPTION
The iichid driver provides a interface to I2C Human Interface Devices
(HIDs).
SYSCTL VARIABLES
Next parameters are available as sysctl(8) variables. Debug parameter is
available as loader(8) tunable as well.
dev.iichid.*.sampling_rate_fast
Active sampling rate in num/second (for sampling mode).
dev.iichid.*.sampling_rate_slow
Idle sampling rate in num/second (for sampling mode).
dev.iichid.*.sampling_hysteresis
Number of missing samples before enabling of slow mode (for
sampling mode).
hw.iichid.debug
Debug output level, where 0 is debugging disabled and larger
values increase debug message verbosity. Default is 0.
SEE ALSO
ig4(4)
BUGS
The iichid does not support GPIO interrupts yet. In that case iichid
enables sampling mode with periodic polling of hardware by driver means.
See dev.iichid.*.sampling_* sysctl(8) variables for tuning of sampling
parameters.
HISTORY
The iichid driver first appeared in FreeBSD 13.0.
AUTHORS
The iichid driver was written by Marc Priggemeyer
<
[email protected]> and Vladimir Kondratyev <
[email protected]>.
This manual page was written by Vladimir Kondratyev <
[email protected]>.
FreeBSD 14.1-RELEASE-p8 September 21, 2020 FreeBSD 14.1-RELEASE-p8