// usbfnbase.h

typedef enum _USBFN_PORT_TYPE {
  UsbfnUnknownPort,
  UsbfnStandardDownstreamPort,
  UsbfnChargingDownstreamPort,
  UsbfnDedicatedChargingPort,
  UsbfnInvalidDedicatedChargingPort,
  UsbfnProprietaryDedicatedChargingPort,
  UsbfnPortTypeMaximum
} USBFN_PORT_TYPE, *PUSBFN_PORT_TYPE;
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Windows Driver Kit DDI reference (ne-usbfnbase-_usbfn_port_type)

_USBFN_PORT_TYPE enumeration

Description

Defines the possible port types that can be returned by the client driver during port detection.

Constants

`UsbfnUnknownPort`

Port detection was unable to determine the port type.

`UsbfnStandardDownstreamPort`

The upstream port has been detected as a standard downstream port (SDP) (as defined in the Battery Charging Specification, revision 1.2).

`UsbfnChargingDownstreamPort`

The upstream port has been detected as a charging downstream port (CDP), as defined in the Battery Charging Specification, revision 1.2.

`UsbfnDedicatedChargingPort`

The upstream port has been detected as a dedicated charging port (DCP) (as defined in the Battery Charging Specification, revision 1.2).

`UsbfnInvalidDedicatedChargingPort`

The upstream port has been detected as a dedicated charging port that does not comply with the Battery Charging Specification, revision 1.2.

`UsbfnProprietaryDedicatedChargingPort`

A proprietary charger was attached.

`UsbfnPortTypeMaximum`

The maximum value of the enumeration.

USBFN_PORT_TYPE - NtDoc