1 .\" Copyright (c) 2020 Vladimir Kondratyev <wulf@FreeBSD.org>
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26 .Dd September 21, 2020
31 .Nd I2C HID transport driver
33 To compile this driver into the kernel,
34 place the following lines in your
35 kernel configuration file:
36 .Bd -ragged -offset indent
40 Alternatively, to load the driver as a
41 module at boot time, place the following line in
43 .Bd -literal -offset indent
49 driver provides a interface to I2C Human Interface Devices (HIDs).
51 Next parameters are available as
54 Debug parameter is available as
57 .Bl -tag -width indent
58 .It Va dev.iichid.*.sampling_rate_fast
59 Active sampling rate in num/second (for sampling mode).
60 .It Va dev.iichid.*.sampling_rate_slow
61 Idle sampling rate in num/second (for sampling mode).
62 .It Va dev.iichid.*.sampling_hysteresis
63 Number of missing samples before enabling of slow mode (for sampling mode).
64 .It Va hw.iichid.debug
65 Debug output level, where 0 is debugging disabled and larger values increase
66 debug message verbosity.
74 does not support GPIO interrupts yet.
77 enables sampling mode with periodic polling of hardware by driver means.
78 See dev.iichid.*.sampling_*
80 variables for tuning of sampling parameters.
84 driver first appeared in
91 .An Marc Priggemeyer Aq Mt marc.priggemeyer@gmail.com
93 .An Vladimir Kondratyev Aq Mt wulf@FreeBSD.org .
95 This manual page was written by
96 .An Vladimir Kondratyev Aq Mt wulf@FreeBSD.org .