[Bug 260565] x11-drivers/xorg-drivers: expand default selection by EVDEV

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=260565

--- Comment #2 from Harald Schmalzbauer <bugzilla.freebsd@omnilan.de> ---
(In reply to Michael Gmelin from comment #1)
I started with a stable/13 setup on SkyLake (amd64, no extra graphics).
Copmpiled my own x11-meta port, which includes x11-drivers/xorg-drivers (which
doesn't select xf86-input-evdev currently).
Based on the nature of this hardware, I installed kmod-drm and xf86-video-intel
in addition.
Since I was aware that evdev[4] is available in all recent FreeBSD kernel
versions, I deselected DEVD option for x11-servers/xorg-server, to avoid
interfering with evdev[4] - my personal way of understanding things ;-)

startx(1) brings up xorg with twm(1) as expected, but without mouse and
keyboard supprt:
[ 63985.828] (II) config/udev: Adding input device System keyboard multiplexer
(/dev/input/event0)
[ 63985.828] (**) System keyboard multiplexer: Applying InputClass "Evdev
keyboard"
[ 63985.828] (II) No input driver specified, ignoring this device.
[ 63985.829] (II) This device may have been added with another device file.
[ 63985.829] (II) config/udev: Adding input device System mouse
(/dev/input/event1)
[ 63985.829] (II) No input driver specified, ignoring this device.
[ 63985.829] (II) This device may have been added with another device file.
[ 63985.829] (II) config/udev: Adding input device Sleep Button
(/dev/input/event2)
[ 63985.829] (**) Sleep Button: Applying InputClass "Evdev keyboard"
[ 63985.829] (II) No input driver specified, ignoring this device.
[ 63985.829] (II) This device may have been added with another device file.
[ 63985.829] (II) config/udev: Adding input device Power Button
(/dev/input/event3)
[ 63985.829] (**) Power Button: Applying InputClass "Evdev keyboard"
[ 63985.829] (II) No input driver specified, ignoring this device.
[ 63985.829] (II) This device may have been added with another device file.
[ 63985.829] (II) config/udev: Adding input device AT keyboard
(/dev/input/event4)
[ 63985.829] (**) AT keyboard: Applying InputClass "Evdev keyboard"
[ 63985.829] (II) No input driver specified, ignoring this device.
[ 63985.829] (II) This device may have been added with another device file.

Not much clue about evdev[4], I started searching for docs - hard trip, but
besides some very vague (and most times outdated/wrong) advices to alter
kern.evdev.rcpt_mask, I found somebody else reporting a similar issue, which
was solved by adding xf86-input-evdev:
https://forums.freebsd.org/threads/evdev_support-is-enabled-ignoring-devices-no-keyboard-trackpad-mouse.77231/

Probably for people not deselecting DEVD option in x11-servers/xorg-server,
everything woks out-of-box as intended.
But in that case our newly introduced evdev[4] kernel support gets
ignored/hidden.

On the other hand, xf86-input-evdev depends on multimedia/webcamd.
It doesn't bring more dependencies to the show, though.
I have no idea why this is a decendency for xf86-input-evdev at all, but I'd
vote for accpeting that extra dependency.
I don't expect having xf86-input-evdev installed as default option resp.
dependency for x11-drivers/xorg-drivers to cause any other troubles for people
not deselecting DEVD option, but people intentionally turning DEVD support off
would come closer to what they expect with that action.

Thanks,
-harry

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