// ucxroothub.h

typedef union _CONTROLLER_USB_20_HARDWARE_LPM_FLAGS {
  UCHAR  AsUchar;
  struct {
    UCHAR L1CapabilitySupported : 1;
    UCHAR BeslLpmCapabilitySupported : 1;
  } Flags;
  struct {
    UCHAR L1CapabilitySupported : 1;
    UCHAR BeslLpmCapabilitySupported : 1;
  };
} CONTROLLER_USB_20_HARDWARE_LPM_FLAGS, *PCONTROLLER_USB_20_HARDWARE_LPM_FLAGS;
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Windows Driver Kit DDI reference (ns-ucxroothub-_controller_usb_20_hardware_lpm_flags)

_CONTROLLER_USB_20_HARDWARE_LPM_FLAGS structure

Description

Describes supported protocol capabilities for Link Power Management (LPM) in as defined the USB 2.0 specification.

Members

`AsUchar`

The size of structure represented as a char (8-bit) value.

`Flags`

`Flags.L1CapabilitySupported`

`Flags.BeslLpmCapabilitySupported`

`L1CapabilitySupported`

Indicates support for L1 transitions.

`BeslLpmCapabilitySupported`

Indicates Best Effort Service latency (BESL) latency support.

CONTROLLER_USB_20_HARDWARE_LPM_FLAGS - NtDoc