Device Power Management Guidelines

Collapse All

8/28/2008

Power Manager does not impose strict restrictions on device power consumption or responsiveness, or capabilities in any particular power state. However, devices in states D0 and D1 should be functional from the perspective of the user, and higher-numbered states should generally consume less power than lower numbered states.

These simple guidelines make it easier for OEMs to write meaningful system power states, without having to know details of the power levels of individual devices.

In This Section

Power-Manageable Device Drivers: Provides information on power-manageable device drivers, including how to add power management to a driver.

Power Management Implementation in Drivers: Provides information on implementation of drivers.

Power Management Implementation in Stream Interface Drivers: Provides information on stream interface drivers.

Class-Qualified Device Names: Provides information on device classes for Windows Embedded CE-based devices.

IOCTL_POWER_SET Request Processing: Provides supplemental information on the IOCTL_POWER_SET I/O control.

Suspend and Resume Handling: Provides information on how Power Manager handles the suspended and resuming system power states.

Device State D3 and System Wakeup: Provides information on handling system wakeup.

Device Power Capabilities: Provides supplemental information on the IOCTL_POWER_CAPABILITIES I/O control.

Device Power Self-Management: Provides information on managing device power.

How to Add Power Management to a Device Driver: Provides information about adding power management for a device driver.

Related Sections

For Windows Embedded CE:

Kernel Migration

Other Resources

Power Management