/**
* This function disables a HDCP port device.
*
* @param InstancePtr is the device to disable.
*
* @return
* - XST_SUCCESS if successful.
*
* @note None.
*
******************************************************************************/
static int XHdcp1x_PortDpRxDisable(XHdcp1x *InstancePtr)
{
XDprx *HwDp = InstancePtr->Port.PhyIfPtr;
u32 IntMask = 0;
u8 Offset = 0;
u8 Value = 0;
int NumLeft = 0;
int Status = XST_SUCCESS;
/* Verify arguments. */
Xil_AssertNonvoid(InstancePtr != NULL);
Xil_AssertNonvoid(InstancePtr->Port.PhyIfPtr != NULL);
/* Disable interrupts */
IntMask = XDP_RX_INTERRUPT_MASK_HDCP_AKSV_WRITE_MASK;
IntMask |= XDP_RX_INTERRUPT_MASK_HDCP_RO_READ_MASK;
IntMask |= XDP_RX_INTERRUPT_MASK_HDCP_BINFO_READ_MASK;
XDp_RxInterruptDisable(HwDp, IntMask);
/* Clear hdcp registers */
Value = 0;
Offset = 0;
NumLeft = 256;
while (NumLeft-- > 0) {
XHdcp1x_PortDpRxWrite(InstancePtr, Offset++, &Value,
sizeof(Value));
}
return (Status);
}
/**
*
* This function is the callback function for when a vertical blank interrupt
* occurs.
*
* @param InstancePtr is a pointer to the XDpRxSs instance.
*
* @return None.
*
* @note None.
*
******************************************************************************/
void DpRxSs_VerticalBlankHandler(void *InstancePtr)
{
XDpRxSs *DpRxSsPtr = (XDpRxSs *)InstancePtr;
u32 Status;
if (DpRxSsPtr->VBlankEnable) {
DpRxSsPtr->VBlankCount++;
xil_printf("Interrupt: vertical blanking (frame %d).\n",
DpRxSsPtr->VBlankCount);
/* Wait until 20 frames have been received before forwarding or
* outputting any video stream. */
if (DpRxSsPtr->VBlankCount >= 20) {
DpRxSsPtr->VBlankEnable = 0;
DpRxSsPtr->VBlankCount = 0;
XDp_RxInterruptDisable(DpRxSsPtr->DpPtr,
XDP_RX_INTERRUPT_MASK_VBLANK_MASK);
Status = XDpRxSs_CheckLinkStatus(InstancePtr);
if (Status == XST_SUCCESS) {
/* User is responsible for resetting the video
* pipe.
*/
/* Detect resolution */
DpRxSs_DetectResolution(InstancePtr);
}
}
}
}
/**
* This function is the callback function for when a vertical blanking interrupt
* occurs.
*
* @param InstancePtr is a pointer to the XDp instance.
*
* @return None.
*
* @note None.
*
*******************************************************************************/
static void Dprx_InterruptHandlerVBlank(void *InstancePtr)
{
u32 Status;
if (VBlankEnable) {
VBlankCount++;
xil_printf("> Interrupt: vertical blanking (frame %d).\n",
VBlankCount);
/* Wait until 20 frames have been received before forwarding or
* outputting any video stream. */
if (VBlankCount >= 20) {
VBlankEnable = 0;
XDp_RxInterruptDisable(InstancePtr,
XDP_RX_INTERRUPT_MASK_VBLANK_MASK);
Status = XDp_RxCheckLinkStatus(InstancePtr);
if (Status == XST_SUCCESS) {
Dprx_ResetVideoOutput(InstancePtr);
Dprx_DetectResolution(InstancePtr);
}
}
}
}
