[Bug 238037] [PATCH] Implement ig4 suspend/resume

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=238037

--- Comment #15 from marc.priggemeyer at gmail.com ---
I updated the diff in https://reviews.freebsd.org/D16698 and added a sysctl to
send the human interface device to sleep and wake it up again. I would kindly
ask you to check whether sending the (HID) device to sleep manually before
suspending and waking it up manually after resuming helps. I'm hoping that
putting the device into controlled sleep will make the bus scan obsolete.

go to sleep:
sysctl dev.iichid.0.power_state=1

wake up:
sysctl dev.iichid.0.power_state=0

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