// ucmucsispec.h

typedef enum _UCSI_POWER_DIRECTION_ROLE {
  UcsiPowerDirectionRoleProvider = 0x1,
  UcsiPowerDirectionRoleConsumer = 0x2,
  UcsiPowerDirectionRoleAcceptSwap = 0x4,
  UcsiPowerDirectionRoleProviderAcceptSwap = 0x5,
  UcsiPowerDirectionRoleConsumerAcceptSwap = 0x6
} UCSI_POWER_DIRECTION_ROLE;
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Windows Driver Kit DDI reference (ne-ucmucsispec-_ucsi_power_direction_role)

_UCSI_POWER_DIRECTION_ROLE enumeration

Description

Used in the SET_PDR command. The SET_PDR command is used to set the power direction dictated by the OS Policy Manager (OPM), for the current connection.

Constants

`UcsiPowerDirectionRoleProvider:0x1`

The connector initiates swap to source, if not already operating as source.

`UcsiPowerDirectionRoleConsumer:0x2`

The connector initiates swap to sink, if not already operating as sink.

`UcsiPowerDirectionRoleAcceptSwap:0x4`

The connector accepts power direction swap requests from the port partner. If this bit is cleared, the connector rejects power direction swap requests from the port partner.

`UcsiPowerDirectionRoleProviderAcceptSwap:0x5`

This field combines the UcsiPowerDirectionRoleProvider and UcsiPowerDirectionRoleAcceptSwap values.

`UcsiPowerDirectionRoleConsumerAcceptSwap:0x6`

This field combines the UcsiPowerDirectionRoleConsumer and UcsiPowerDirectionRoleAcceptSwap values.

Remarks

For more information, see section 4.5.10 in the UCSI spec version 1.2.

UCSI_POWER_DIRECTION_ROLE - NtDoc