// d3dkmdt.h

typedef enum _DXGK_CHILD_DEVICE_HPD_AWARENESS {
  HpdAwarenessUninitialized,
  HpdAwarenessAlwaysConnected,
  HpdAwarenessNone,
  HpdAwarenessPolled,
  HpdAwarenessInterruptible
} DXGK_CHILD_DEVICE_HPD_AWARENESS, *PDXGK_CHILD_DEVICE_HPD_AWARENESS;
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Windows Driver Kit DDI reference (ne-d3dkmdt-_dxgk_child_device_hpd_awareness)

_DXGK_CHILD_DEVICE_HPD_AWARENESS enumeration

Description

The DXGK_CHILD_DEVICE_HPD_AWARENESS enumeration is used to describe the hot plug capabilities of a child device of a display adapter.

Constants

`HpdAwarenessUninitialized`

Indicates that a variable of type DXGK_CHILD_DEVICE_HPD_AWARENESS has not yet been assigned a meaningful value.

`HpdAwarenessAlwaysConnected`

Indicates that the child device is always connected; that is, it does not serve as a connector for external devices.

`HpdAwarenessNone`

Reserved for system use. You should not use this value.

`HpdAwarenessPolled`

Indicates that the display miniport driver is able to determine whether an external device is connected to the child device by polling the child device.

`HpdAwarenessInterruptible`

Indicates that the child device is able to generate an interrupt when an external device is connected or disconnected.

Remarks

The ChildCapabilities member of a DXGK_CHILD_DESCRIPTOR structure is a DXGK_CHILD_CAPABILITIES structure. The HpdAwareness member of a DXGK_CHILD_DEVICE_HPD_AWARENESS structure is a DXGK_CHILD_CAPABILITIES structure.

DXGK_CHILD_DEVICE_HPD_AWARENESS - NtDoc