source: udev/61-persistent-input.rules@ 96cbcec

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#
# Description : 61-persistent-input.rules
#
# Authors     : Based on Open Suse Udev Rules
#               kay.sievers@suse.de and hare@suse.de
#
# Adapted to  : Jim Gifford
# LFS
#
# Version     : 00.01
#
# Notes       :
#
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ACTION!="add",          GOTO="persistent_input_end"
SUBSYSTEM!="input",     GOTO="persistent_input_end"
KERNEL=="input[0-9]*",  GOTO="persistent_input_end"

# usb devices
SUBSYSTEMS=="usb", IMPORT{program}="usb_id -x"
SUBSYSTEMS=="usb", ATTRS{bInterfaceClass}=="03", ATTRS{bInterfaceProtocol}=="01", ENV{ID_CLASS}="kbd"
SUBSYSTEMS=="usb", ATTRS{bInterfaceClass}=="03", ATTRS{bInterfaceProtocol}=="02", ENV{ID_CLASS}="mouse"

# other devices
DRIVERS=="pcspkr",                                              ENV{ID_CLASS}="spkr"
DRIVERS=="atkbd",                                               ENV{ID_CLASS}="kbd"
DRIVERS=="psmouse",                                             ENV{ID_CLASS}="mouse"
ATTRS{name}=="*dvb*|*DVB*|* IR *",                              ENV{ID_CLASS}="ir"
ATTRS{modalias}=="input:*-*a[068],*|input:*-*a*,[68],*m*",      ATTRS{modalias}!="input:*-*k*14A,*r*", ENV{ID_CLASS}="joystick"

# fill empty serial number
ENV{ID_CLASS}=="?*", ENV{ID_SERIAL}=="", ENV{ID_SERIAL}="noserial"

# by-id links
KERNEL=="mouse*|js*",   ENV{ID_BUS}=="?*", ENV{ID_CLASS}=="?*", SYMLINK+="input/by-id/$env{ID_BUS}-$env{ID_SERIAL}-$env{ID_CLASS}"
KERNEL=="event*",       ENV{ID_BUS}=="?*", ENV{ID_CLASS}=="?*", SYMLINK+="input/by-id/$env{ID_BUS}-$env{ID_SERIAL}-event-$env{ID_CLASS}"

# by-path
IMPORT{program}="path_id %p"
ENV{ID_PATH}=="?*", KERNEL=="mouse*|js*", SYMLINK+="input/by-path/$env{ID_PATH}-$env{ID_CLASS}"
ENV{ID_PATH}=="?*", KERNEL=="event*", SYMLINK+="input/by-path/$env{ID_PATH}-event-$env{ID_CLASS}"

LABEL="persistent_input_end"