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dp: rx: mst: Added ability to expose or hide a specific port from the TX.

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Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
This commit is contained in:
Andrei-Liviu Simion 2015-04-02 17:54:26 -07:00 • committed by Nava kishore Manne
parent 23dad61218
commit b12d4c0570
2 changed files with 35 additions and 0 deletions
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1
XilinxProcessorIPLib/drivers/dp/src/xdp.h
View file

@ -1022,6 +1022,7 @@ void XDp_TxWriteGuid(XDp *InstancePtr, u8 LinkCountTotal, u8 *RelativeAddress,
u32 Guid[4]);
void XDp_TxGetGuid(XDp *InstancePtr, u8 LinkCountTotal, u8 *RelativeAddress,
u32 *Guid);
void XDp_RxMstExposePort(XDp *InstancePtr, u8 PortNum, u8 Expose);
/* xdp_selftest.c: Self test function. */
u32 XDp_SelfTest(XDp *InstancePtr);

34
XilinxProcessorIPLib/drivers/dp/src/xdp_mst.c
View file

@ -2295,6 +2295,40 @@ void XDp_TxGetGuid(XDp *InstancePtr, u8 LinkCountTotal, u8 *RelativeAddress,
}
}
/******************************************************************************/
/**
* This function allows the user to select which ports will be exposed when
* replying to a LINK_ADDRESS sideband message. The number of ports will also
* be set.
* When an upstream device sends a LINK_ADDRESS sideband message, the RX will
* respond by forming a reply message containing port information for directly
* connected ports.
* If exposed, this information will be provided in the LINK_ADDRESS reply.
* Otherwise, the LINK_ADDRESS reply will not contain this information, hiding
* the port from the TX.
*
* @param InstancePtr is a pointer to the XDp instance.
* @param PortNum is the port number to enable or disable exposure.
* @param Expose will expose the port at the specified PortNum as part of
* the LINK_ADDRESS reply when set to 1. Hidden otherwise.
*
* @return None.
*
* @note None.
*
*******************************************************************************/
void XDp_RxMstExposePort(XDp *InstancePtr, u8 PortNum, u8 Expose)
{
InstancePtr->RxInstance.Topology.Ports[PortNum].Exposed = Expose;
if (Expose) {
InstancePtr->RxInstance.Topology.LinkAddressInfo.NumPorts++;
}
else if (InstancePtr->RxInstance.Topology.LinkAddressInfo.NumPorts) {
InstancePtr->RxInstance.Topology.LinkAddressInfo.NumPorts--;
}
}
/******************************************************************************/
/**
* This function will check whether or not a DisplayPort device has a global