Symbol: BTN_0
sys/dev/misc/psm/psm.c
1921
evdev_support_key(evdev_a, BTN_0 + i);
sys/dev/misc/psm/psm.c
3523
BTN_0 + i * 2,
sys/dev/misc/psm/psm.c
3526
BTN_0 + i * 2 + 1,