How can I use joystick under freebsd?

[snnn]

$ dmesg | grep -i joy
139:uhid0: GreenAsia Inc. USB Joystick, rev 1.00/1.07, addr 2, iclass 3/0

when booting,the kernel detected it.
but I can not use it under games.e.g.port: emulators/gens

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