14 Aug
2012
14 Aug
'12
3:42 p.m.
Adding timers means are you adding wakeups to the CPU. That seems counterproductive if you're trying to save power...?
Is there no way to listen to a change event of some sort instead?
The module parameter "power_save" is used to enable/disable the power saving and set a timeout. But when its value changes, the driver cannot get a notification.
I hope to reserve the sysfs interface, so I choose to poll the value at a relative long interval.
Thanks Mengdong