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Managing Power for Individual Devices

Drivers manage power for their devices by responding to system power state changes, detecting and shutting down idle devices, and powering up devices when they are needed.

This section covers the following topics related to device power management:

Device Power States

Detecting an Idle Device

Managing Device Power Policy

Handling IRP_MN_SET_POWER for Device Power States

Handling IRP_MN_QUERY_POWER for Device Power States

Sending IRP_MN_QUERY_POWER or IRP_MN_SET_POWER for Device Power States

Detecting an Idle Device

Supporting D3cold in a Driver

 

 

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