Device Power Management Guidelines (Windows CE 5.0)

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The Power Manager does not impose strict restrictions on device power consumption or responsiveness, or capabilities in any of the states. 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

• Device Power Self-Management
  Provides information on managing device power.
• Power-Manageable Device Drivers
  Provides information on power-manageable device drivers, including how to add power management to a driver.
• Class-Qualified Device Names
  Provides information on device classes for Windows CE-based devices.
• Device Initialization Responsibilities
  Provides information on the power management-related responsibilities of a device during initialization.
• IOCTL_POWER_SET Request Processing
  Provides supplemental information on the IOCTL_POWER_SET IOCTL.
• Suspend and Resume Handling
  Provides information on how the Power Manager handles the suspend and resume system power states.
• Device Power Capabilities
  Provides supplemental information on the IOCTL_POWER_CAPABILITIES IOCTL.

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