"disabled" to it.
For the devices that are not capable of generating system wakeup
- events this file contains "\n". In that cases the user space
- cannot modify the contents of this file and the device cannot be
- enabled to wake up the system.
+ events this file is not present. In that case the device cannot
+ be enabled to wake up the system from sleep states.
What: /sys/devices/.../power/control
Date: January 2009
The /sys/devices/.../wakeup_count attribute contains the number
of signaled wakeup events associated with the device. This
attribute is read-only. If the device is not enabled to wake up
- the system from sleep states, this attribute is empty.
+ the system from sleep states, this attribute is not present.
What: /sys/devices/.../power/wakeup_active_count
Date: September 2010
number of times the processing of wakeup events associated with
the device was completed (at the kernel level). This attribute
is read-only. If the device is not enabled to wake up the
- system from sleep states, this attribute is empty.
+ system from sleep states, this attribute is not present.
What: /sys/devices/.../power/wakeup_hit_count
Date: September 2010
number of times the processing of a wakeup event associated with
the device might prevent the system from entering a sleep state.
This attribute is read-only. If the device is not enabled to
- wake up the system from sleep states, this attribute is empty.
+ wake up the system from sleep states, this attribute is not
+ present.
What: /sys/devices/.../power/wakeup_active
Date: September 2010
or 0, depending on whether or not a wakeup event associated with
the device is being processed (1). This attribute is read-only.
If the device is not enabled to wake up the system from sleep
- states, this attribute is empty.
+ states, this attribute is not present.
What: /sys/devices/.../power/wakeup_total_time_ms
Date: September 2010
the total time of processing wakeup events associated with the
device, in milliseconds. This attribute is read-only. If the
device is not enabled to wake up the system from sleep states,
- this attribute is empty.
+ this attribute is not present.
What: /sys/devices/.../power/wakeup_max_time_ms
Date: September 2010
the maximum time of processing a single wakeup event associated
with the device, in milliseconds. This attribute is read-only.
If the device is not enabled to wake up the system from sleep
- states, this attribute is empty.
+ states, this attribute is not present.
What: /sys/devices/.../power/wakeup_last_time_ms
Date: September 2010
signaling the last wakeup event associated with the device, in
milliseconds. This attribute is read-only. If the device is
not enabled to wake up the system from sleep states, this
- attribute is empty.
+ attribute is not present.
What: /sys/devices/.../power/autosuspend_delay_ms
Date: September 2010