Udevadm info starts with the device specified by the devpath and then
walks up the chain of parent devices. It prints for every device
found, all possible attributes in the udev rules key format.
A rule to match, can be composed by the attributes of the device
and the attributes from one single parent device.

looking at device '/devices/platform/i8042/serio1/input/input31/event23':
KERNEL"event23"
SUBSYSTEM
"input"
DRIVER""
ATTR{power/control}
"auto"
ATTR{power/runtime_active_time}"0"
ATTR{power/runtime_status}
"unsupported"
ATTR{power/runtime_suspended_time}=="0"

looking at parent device '/devices/platform/i8042/serio1/input/input31':
KERNELS"input31"
SUBSYSTEMS
"input"
DRIVERS""
ATTRS{capabilities/abs}
"0"
ATTRS{capabilities/ev}"7"
ATTRS{capabilities/ff}
"0"
ATTRS{capabilities/key}"70000 0 0 0 0"
ATTRS{capabilities/led}
"0"
ATTRS{capabilities/msc}"0"
ATTRS{capabilities/rel}
"3"
ATTRS{capabilities/snd}"0"
ATTRS{capabilities/sw}
"0"
ATTRS{id/bustype}"0011"
ATTRS{id/product}
"000a"
ATTRS{id/vendor}"0002"
ATTRS{id/version}
"0063"
ATTRS{inhibited}"0"
ATTRS{name}
"TPPS/2 Elan TrackPoint"
ATTRS{phys}"isa0060/serio1/input0"
ATTRS{power/control}
"auto"
ATTRS{power/runtime_active_time}"0"
ATTRS{power/runtime_status}
"unsupported"
ATTRS{power/runtime_suspended_time}"0"
ATTRS{properties}
"21"
ATTRS{uniq}==""

looking at parent device '/devices/platform/i8042/serio1':
KERNELS"serio1"
SUBSYSTEMS
"serio"
DRIVERS"psmouse"
ATTRS{bind_mode}
"auto"
ATTRS{description}"i8042 AUX port"
ATTRS{drvctl}
"(not readable)"
ATTRS{firmware_id}"PNP: LEN030b PNP0f13"
ATTRS{id/extra}
"00"
ATTRS{id/id}"00"
ATTRS{id/proto}
"00"
ATTRS{id/type}"01"
ATTRS{power/control}
"auto"
ATTRS{power/runtime_active_time}"0"
ATTRS{power/runtime_status}
"unsupported"
ATTRS{power/runtime_suspended_time}"0"
ATTRS{power/wakeup}
"disabled"
ATTRS{power/wakeup_abort_count}""
ATTRS{power/wakeup_active}
""
ATTRS{power/wakeup_active_count}""
ATTRS{power/wakeup_count}
""
ATTRS{power/wakeup_expire_count}""
ATTRS{power/wakeup_last_time_ms}
""
ATTRS{power/wakeup_max_time_ms}""
ATTRS{power/wakeup_total_time_ms}
""
ATTRS{press_to_select}"1"
ATTRS{protocol}
"TPPS/2"
ATTRS{rate}"100"
ATTRS{resetafter}
"5"
ATTRS{resolution}"200"
ATTRS{resync_time}
"0"
ATTRS{sensitivity}=="240"

looking at parent device '/devices/platform/i8042':
KERNELS"i8042"
SUBSYSTEMS
"platform"
DRIVERS"i8042"
ATTRS{driver_override}
"(null)"
ATTRS{power/control}"auto"
ATTRS{power/runtime_active_time}
"0"
ATTRS{power/runtime_status}"unsupported"
ATTRS{power/runtime_suspended_time}
"0"

looking at parent device '/devices/platform':
KERNELS"platform"
SUBSYSTEMS
""
DRIVERS""
ATTRS{power/control}
"auto"
ATTRS{power/runtime_active_time}"0"
ATTRS{power/runtime_status}
"unsupported"
ATTRS{power/runtime_suspended_time}=="0"

Edit

Pub: 13 May 2024 19:22 UTC

Views: 113