Power Management Device Driver Interface (Compact 2013)
3/26/2014
Power Manager communicates with device drivers through a device driver interface and through I/O control (IOCTL) commands that it issues directly to device drivers. (To view a diagram of the relationship, see Power Management Architecture.) Power Manager also supports a set of device class GUIDs that make it possible for you to configure device power states based on device class rather than device name.