WDF_DEVICE_POWER_CAPABILITIES_INIT function
[Applies to KMDF and UMDF]
The WDF_DEVICE_POWER_CAPABILITIES_INIT function initializes a WDF_DEVICE_POWER_CAPABILITIES structure.
Syntax
VOID WDF_DEVICE_POWER_CAPABILITIES_INIT( _Out_ PWDF_DEVICE_POWER_CAPABILITIES Caps );
Parameters
- Caps [out]
-
A pointer to a driver-supplied WDF_DEVICE_POWER_CAPABILITIES structure.
Return value
None
Remarks
The WDF_DEVICE_POWER_CAPABILITIES_INIT function zeros the WDF_DEVICE_POWER_CAPABILITIES structure and sets the structure's Size member. Then, it does the following:
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Sets the DeviceD1 and DeviceD2 members to WdfUseDefault.
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Sets the WakeFromD0, WakeFromD1, WakeFromD2, and WakeFromD3 members to WdfUseDefault.
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Sets all device states in the DeviceState array to PowerDeviceMaximum.
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Sets the DeviceWake and SystemWake members to PowerDeviceMaximum.
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Sets the D1Latency, D2Latency, and D3Latency members to -1.
-
Sets the IdealDxStateForSx member to PowerDeviceMaximum.
For a code example that uses WDF_DEVICE_POWER_CAPABILITIES_INIT, see WdfDeviceSetPowerCapabilities.
Requirements
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Minimum KMDF version | 1.0 |
|---|---|
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Minimum UMDF version | 2.0 |
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Header |
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See also
