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WDMUSB_POWER_STATE enumeration (usbuser.h)

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The WDMUSB_POWER_STATE enumeration indicates the power state of a host controller or root hub.

Syntax

typedef enum _WDMUSB_POWER_STATE {
  WdmUsbPowerNotMapped = 0,
  WdmUsbPowerSystemUnspecified = 100,
  WdmUsbPowerSystemWorking,
  WdmUsbPowerSystemSleeping1,
  WdmUsbPowerSystemSleeping2,
  WdmUsbPowerSystemSleeping3,
  WdmUsbPowerSystemHibernate,
  WdmUsbPowerSystemShutdown,
  WdmUsbPowerDeviceUnspecified = 200,
  WdmUsbPowerDeviceD0,
  WdmUsbPowerDeviceD1,
  WdmUsbPowerDeviceD2,
  WdmUsbPowerDeviceD3
} WDMUSB_POWER_STATE;

Constants

 
WdmUsbPowerNotMapped
Value: 0
Power state information is not mapped.
WdmUsbPowerSystemUnspecified
Value: 100
Power state information is not available.
WdmUsbPowerSystemWorking
The system is in the working state.
WdmUsbPowerSystemSleeping1
The system is in the S1 power state.
WdmUsbPowerSystemSleeping2
The system is in the S2 power state.
WdmUsbPowerSystemSleeping3
The system is in the S3 power state.
WdmUsbPowerSystemHibernate
The system is hibernating.
WdmUsbPowerSystemShutdown
The system is shutdown.
WdmUsbPowerDeviceUnspecified
Value: 200
A device is not specified.
WdmUsbPowerDeviceD0
The host controller is in the D0 power state.
WdmUsbPowerDeviceD1
The host controller is in the D1 power state.
WdmUsbPowerDeviceD2
The host controller is in the D2 power state.
WdmUsbPowerDeviceD3
The host controller is in the D3 power state.

Remarks

The USB stack uses the WDMUSB_POWER_STATE enumeration to report the power state of the host controller after receiving a USBUSER_GET_POWER_STATE_MAP request. For more information about this request, see IOCTL_USB_USER_REQUEST.

Requirements

Requirement Value
Header usbuser.h (include Usbuser.h)

See also

IOCTL_USB_USER_REQUEST

USB Constants and Enumerations