/**
*
* This function resets the DisplayPort Transmitter Subsystem including all
* sub-cores.
*
* @param InstancePtr is a pointer to the XDpTxSs core instance.
*
* @return None.
*
* @note None.
*
******************************************************************************/
void XDpTxSs_Reset(XDpTxSs *InstancePtr)
{
u32 Index;
/* Verify argument. */
Xil_AssertVoid(InstancePtr != NULL);
/* Reset the DisplayPort. */
XDpTxSs_WriteReg(InstancePtr->Config.DpSubCore.DpConfig.BaseAddr,
XDP_TX_SOFT_RESET, XDP_TX_SOFT_RESET_VIDEO_STREAM_ALL_MASK);
XDpTxSs_WriteReg(InstancePtr->Config.DpSubCore.DpConfig.BaseAddr,
XDP_TX_SOFT_RESET, 0x0);
#if (XPAR_XDUALSPLITTER_NUM_INSTANCES > 0)
/* Reset Dual Splitter */
if (InstancePtr->DsPtr) {
XDualSplitter_Reset(InstancePtr->DsPtr);
}
#endif
for (Index = 0; Index < InstancePtr->Config.NumMstStreams; Index++) {
/* Reset VTC's */
if (InstancePtr->VtcPtr[Index]) {
XVtc_Reset(InstancePtr->VtcPtr[Index]);
}
}
}
/**
*
* This function is called when a Hot-Plug-Detect (HPD) event is received by
* the DisplayPort TX Subsystem core.
*
* @param InstancePtr is a pointer to the XDpTxSs instance.
*
* @return None.
*
* @note Use the XDpTxSs_SetCallback driver function to set this
* function as the handler for HPD event.
*
******************************************************************************/
void DpTxSs_HpdEventHandler(void *InstancePtr)
{
XDpTxSs *DpTxSsInstance = (XDpTxSs *)InstancePtr;
u32 IntrMask;
u32 Status;
/* Read interrupt */
IntrMask = XDpTxSs_ReadReg(DpTxSsInstance->DpPtr->Config.BaseAddr,
(XDPTXSS_INTERRUPT_MASK));
/* Disable HPD interrupts. */
XDpTxSs_WriteReg(DpTxSsInstance->DpPtr->Config.BaseAddr,
(XDPTXSS_INTERRUPT_MASK), IntrMask |
(XDPTXSS_INTERRUPT_MASK_HPD_PULSE_DETECTED_MASK) |
(XDPTXSS_INTERRUPT_MASK_HPD_EVENT_MASK));
xil_printf("+===> HPD connection event detected.\n\r");
if (XDpTxSs_IsConnected(DpTxSsInstance)) {
Status = XDpTxSs_IsMstCapable(DpTxSsInstance);
if ((Status == XST_SUCCESS) &&
DpTxSsInstance->Config.MstSupport) {
DpTxSs_HpdEventCommon(DpTxSsInstance, 1);
}
else if (Status == XST_NO_FEATURE) {
DpTxSs_HpdEventCommon(DpTxSsInstance, 0);
}
else {
xil_printf("ERR:AUX read transaction failed /timed "
"out.\n\r");
}
xil_printf("+===> HPD Connection event ISR is executed.\n\r");
}
else {
xil_printf("+===> HPD disconnection event detected.\n\r");
}
XDpTxSs_WriteReg(DpTxSsInstance->DpPtr->Config.BaseAddr,
(XDPTXSS_INTERRUPT_MASK), IntrMask);
}
