/******************************************************************************
*
* Copyright (C) 2015 Xilinx, Inc. All rights reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* Use of the Software is limited solely to applications:
* (a) running on a Xilinx device, or
* (b) that interact with a Xilinx device through a bus or interconnect.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* XILINX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
* SOFTWARE.
*
* Except as contained in this notice, the name of the Xilinx shall not be used
* in advertising or otherwise to promote the sale, use or other dealings in
* this Software without prior written authorization from Xilinx.
*
******************************************************************************/
/*****************************************************************************/
/**
*
* @file xdprxss_mst_example.c
*
* This file contains a design example using the XDpRxSs driver in single stream
* (SST) transport or multi-stream transport (MST) mode.
*
* @note For this example to display output, the user need to implement
* initialization of the system (DpRxSs_PlatformInit), Video Phy
* (DpRxSs_VideoPhyInit), start DisplayPort RX subsystem
* (XDpRxSs_Start) and DisplayPort TX Subsystem setup
* (DpTxSs_Setup).
* The input to the Subsystem is from RX (GT).
* This example requires an interrupt controller in the system.
* The functions DpRxSs_PlatformInit, DpRxSs_VideoPhyInit and
* DpTxSs_Setup are declared and are left up to the user to
* implement.
*
* <pre>
* MODIFICATION HISTORY:
*
* Ver Who Date Changes
* ---- --- -------- --------------------------------------------------
* 1.00 sha 07/29/15 Initial release.
* </pre>
*
******************************************************************************/
/***************************** Include Files *********************************/
#include "xdprxss.h"
#include "xil_printf.h"
#include "xil_types.h"
#include "xparameters.h"
#include "xstatus.h"
#include "xtmrctr.h"
#ifdef XPAR_INTC_0_DEVICE_ID
/* For MicroBlaze systems. */
#include "xintc.h"
#else
/* For ARM/Zynq SoC systems. */
#include "xscugic.h"
#endif /* XPAR_INTC_0_DEVICE_ID */
/************************** Constant Definitions *****************************/
/*
* The following constants map to the names of the hardware instances.
* They are only defined here such that a user can easily change all the
* needed device IDs in one place.
* There is only one interrupt controlled to be selected from SCUGIC and GPIO
* INTC. INTC selection is based on INTC parameters defined xparameters.h file.
*/
#ifdef XPAR_INTC_0_DEVICE_ID
#define XINTC_DPRXSS_DP_INTERRUPT_ID XPAR_INTC_0_DPRXSS_0_DPRXSS_DP_IRQ_VEC_ID
#define XINTC_DEVICE_ID XPAR_INTC_0_DEVICE_ID
#define XINTC XIntc
#define XINTC_HANDLER XIntc_InterruptHandler
#else /* Else part */
#define XINTC_DPRXSS_DP_INTERRUPT_ID XPAR_INTC_0_DPRXSS_0_DPRXSS_DP_IRQ_VEC_ID
#define XINTC_DEVICE_ID XPAR_SCUGIC_SINGLE_DEVICE_ID
#define XINTC XScuGic
#define XINTC_HANDLER XScuGic_InterruptHandler
#endif /* XPAR_INTC_0_DEVICE_ID */
/* The unique device ID of the Timer controller instance to be used */
#define XTMR_CTRL_DEVICE_ID XPAR_TMRCTR_0_DEVICE_ID
/* The unique device ID of the DisplayPort Receiver Subsystem HIP instance
* to be used
*/
#define XDPRXSS_DEVICE_ID XPAR_DPRXSS_0_DEVICE_ID
/* Example will run either in MST or SST mode based upon config parameters.
* In MST mode, this example exposes maximum number of input and output ports
* of DP RX that will be included while replying to sideband messages from TX.
*/
#define DPRXSS_LINK_RATE XDPRXSS_LINK_BW_SET_540GBPS
#define DPRXSS_LANE_COUNT XDPRXSS_LANE_COUNT_SET_4
/***************** Macros (Inline Functions) Definitions *********************/
/**************************** Type Definitions *******************************/
/************************** Function Prototypes ******************************/
u32 DpRxSs_MstExample(u16 DeviceId);
u32 DpRxSs_PlatformInit(void);
u32 DpRxSs_VideoPhyInit(void);
u32 DpTxSs_Setup(void);
/* Interrupt helper functions */
u32 DpRxSs_SetupIntrSystem(void);
void DpRxSs_VideoModeHandler(void *InstancePtr);
void DpRxSs_NoVideoHandler(void *InstancePtr);
void DpRxSs_VerticalBlankHandler(void *InstancePtr);
void DpRxSs_TrainingLostHandler(void *InstancePtr);
void DpRxSs_TrainingDoneHandler(void *InstancePtr);
void DpRxSs_DownReqestHandler(void *InstancePtr);
void DpRxSs_DownReplyHandler(void *InstancePtr);
void DpRxSs_UnplugHandler(void *InstancePtr);
void DpRxSs_LinkBandwidthHandler(void *InstancePtr);
void DpRxSs_PllResetHandler(void *InstancePtr);
u32 DpRxSs_SetupTimerHandler(void);
void DpRxSs_CustomWaitUs(void *InstancePtr, u32 MicroSeconds);
void DpRxSs_DetectResolution(XDpRxSs *InstancePtr);
/************************** Variable Definitions *****************************/
XDpRxSs DpRxSsInst; /* The DPRX Subsystem instance.*/
XINTC IntcInst; /* The interrupt controller instance. */
XTmrCtr TmrCtrInst; /* The timer counter instance. */
/************************** Function Definitions *****************************/
/*****************************************************************************/
/**
*
* This is the main function for XDpRxSs SST/MST example.
*
* @param None.
*
* @return
* - XST_SUCCESS if the MST/SST example passed.
* - XST_FAILURE if the MST/SST example was unsuccessful.
*
* @note None.
*
******************************************************************************/
int main()
{
u32 Status;
xil_printf("------------------------------------------\n\r");
xil_printf("DisplayPort RX Subsystem SST/MST example\n\r");
xil_printf("(c) 2015 by Xilinx\n\r");
xil_printf("-------------------------------------------\n\r\n\r");
Status = DpRxSs_MstExample(XDPRXSS_DEVICE_ID);
if (Status != XST_SUCCESS) {
xil_printf("DisplayPort RX Subsystem SST/MST example failed."
"\n\r");
return XST_FAILURE;
}
xil_printf("DisplayPort RX Subsystem SST/MST example passed\n\r");
return XST_SUCCESS;
}
/*****************************************************************************/
/**
*
* This function is the main entry point for the MST/SST example using the
* XDpRxSs driver.
*
* @param DeviceId is the unique device ID of the DisplayPort RX
* Subsystem core.
*
* @return
* - XST_SUCCESS if DisplayPort RX Subsystem configured in SST/MST
* successfully.
* - XST_FAILURE, if DisplayPort RX Subsystem failed to configure
* in SST/MST.
*
* @note None.
*
******************************************************************************/
u32 DpRxSs_MstExample(u16 DeviceId)
{
u32 Status;
XDpRxSs_Config *ConfigPtr;
/* Do platform initialization in this function. This is hardware
* system specific. It is up to the user to implement this function.
*/
xil_printf("PlatformInit\n\r");
Status = DpRxSs_PlatformInit();
if (Status != XST_SUCCESS) {
xil_printf("Platform init failed!\n\r");
}
xil_printf("Platform initialization done.\n\r");
/* Obtain the device configuration for the DisplayPort RX Subsystem */
ConfigPtr = XDpRxSs_LookupConfig(DeviceId);
if (!ConfigPtr) {
return XST_FAILURE;
}
/* Copy the device configuration into the DpRxSsInst's Config
* structure. */
Status = XDpRxSs_CfgInitialize(&DpRxSsInst, ConfigPtr,
ConfigPtr->BaseAddress);
if (Status != XST_SUCCESS) {
xil_printf("DPRXSS config initialization failed.\n\r");
return XST_FAILURE;
}
/* Check for SST/MST support */
if (DpRxSsInst.UsrOpt.MstSupport) {
xil_printf("\n\rINFO:DPRXSS is MST enabled. DPRXSS can be "
"switched to SST/MST\n\r\n\r");
}
else {
xil_printf("\n\rINFO:DPRXSS is SST enabled. DPRXSS works "
"only in SST mode.\n\r\n\r");
}
/* Set up a timer. */
DpRxSs_SetupTimerHandler();
Status = DpRxSs_SetupIntrSystem();
if (Status != XST_SUCCESS) {
xil_printf("ERR: Interrupt system setup failed.\n\r");
return XST_FAILURE;
}
/* Set Link rate and lane count to maximum */
XDpRxSs_SetLinkRate(&DpRxSsInst, DPRXSS_LINK_RATE);
XDpRxSs_SetLaneCount(&DpRxSsInst, DPRXSS_LANE_COUNT);
/* Start DPRXSS */
Status = XDpRxSs_Start(&DpRxSsInst);
if (Status != XST_SUCCESS) {
xil_printf("ERR:DPRX SS start failed\n\r");
return XST_FAILURE;
}
/* Setup Video Phy, left to the user for implementation */
DpRxSs_VideoPhyInit();
/* Setup DPTX SS, left to the user for implementation */
DpTxSs_Setup();
return XST_SUCCESS;
}
/*****************************************************************************/
/**
*
* This function initialize required platform specific peripherals.
*
* @param None.
*
* @return
* - XST_SUCCESS if required peripherals are initialized and
* configured successfully.
* - XST_FAILURE, otherwise.
*
* @note None.
*
******************************************************************************/
u32 DpRxSs_PlatformInit(void)
{
/* User is responsible to setup platform specific initialization */
return XST_SUCCESS;
}
/*****************************************************************************/
/**
*
* This function configures Video Phy.
*
* @param None.
*
* @return
* - XST_SUCCESS if Video Phy configured successfully.
* - XST_FAILURE, otherwise.
*
* @note None.
*
******************************************************************************/
u32 DpRxSs_VideoPhyInit(void)
{
/* User is responsible to setup Video Phy */
return XST_SUCCESS;
}
/*****************************************************************************/
/**
*
* This function configures DisplayPort TX Subsystem.
*
* @param None.
*
* @return
* - XST_SUCCESS if DPTX Subsystem configured successfully.
* - XST_FAILURE, otherwise.
*
* @note None.
*
******************************************************************************/
u32 DpTxSs_Setup(void)
{
/* User is responsible to setup Video Phy */
return XST_SUCCESS;
}
/*****************************************************************************/
/**
*
* This function sets up a custom timer which the driver will use for MicroBlaze
* systems.
*
* @param None.
*
* @return
* - XST_SUCCESS if a timer controller exists for use.
* - XST_FAILURE otherwise.
*
* @note A timer controller must be present in the system.
*
******************************************************************************/
u32 DpRxSs_SetupTimerHandler(void)
{
u32 Status;
Status = XTmrCtr_Initialize(&TmrCtrInst, XTMR_CTRL_DEVICE_ID);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/* Set a custom timer handler for improved delay accuracy on MicroBlaze
* systems since the driver does not assume/have a dependency on the
* system having a timer in the FPGA.
* Note: This only has an affect for MicroBlaze systems since the Zynq
* ARM SoC contains a timer, which is used when the driver calls the
* delay function. */
XDpRxSs_SetUserTimerHandler(&DpRxSsInst, &DpRxSs_CustomWaitUs,
&TmrCtrInst);
XTmrCtr_SetResetValue(DpRxSsInst.DpPtr->UserTimerPtr, 0, 0);
XTmrCtr_Reset(DpRxSsInst.DpPtr->UserTimerPtr, 0);
return XST_SUCCESS;
}
/*****************************************************************************/
/**
*
* This function is used to override the driver's default sleep functionality.
* For MicroBlaze systems, the XDpRxSs_WaitUs driver function's default behavior
* is to use the MB_Sleep function from microblaze_sleep.h, which is implemented
* in software and only has millisecond accuracy. For this reason, using a
* hardware timer is preferable. For ARM/Zynq SoC systems, the SoC's timer is
* used - XDpRxSs_WaitUs will ignore this custom timer handler.
*
* @param InstancePtr is a pointer to the XDpRxSs core instance.
* @param MicroSeconds is the number of microseconds to delay/sleep for.
*
* @return None.
*
* @note Use the XDpRxSs_SetUserTimerHandler driver function to set this
* function as the handler for when the XDpRxSs_WaitUs driver
* function is called.
*
******************************************************************************/
void DpRxSs_CustomWaitUs(void *InstancePtr, u32 MicroSeconds)
{
XDpRxSs *DpRxSsPtr = (XDpRxSs *)InstancePtr;
u32 TimerVal;
XTmrCtr_Start(DpRxSsPtr->DpPtr->UserTimerPtr, 0);
/* Wait specified number of useconds. */
do {
TimerVal = XTmrCtr_GetValue(DpRxSsPtr->DpPtr->UserTimerPtr, 0);
} while (TimerVal < (MicroSeconds *
(DpRxSsPtr->DpPtr->Config.SAxiClkHz / 1000000)));
XTmrCtr_Stop(DpRxSsPtr->DpPtr->UserTimerPtr, 0);
}
/*****************************************************************************/
/**
*
* This function sets up the interrupt system so interrupts can occur for the
* DisplayPort RX Subsystem core. The function is application-specific since
* the actual system may or may not have an interrupt controller. The DPRX
* Subsystem core could be directly connected to a processor without an
* interrupt controller. The user should modify this function to fit the
* application.
*
* @param None
*
* @return
* - XST_SUCCESS if interrupt setup was successful.
* - A specific error code defined in "xstatus.h" if an error
* occurs.
*
* @note None.
*
******************************************************************************/
u32 DpRxSs_SetupIntrSystem(void)
{
u32 Status;
XINTC *IntcInstPtr = &IntcInst;
/* Set callbacks for the required interrupts */
XDpRxSs_SetCallBack(&DpRxSsInst, XDPRXSS_HANDLER_DP_VM_CHG_EVENT,
DpRxSs_VideoModeHandler, &DpRxSsInst);
XDpRxSs_SetCallBack(&DpRxSsInst, XDPRXSS_HANDLER_DP_NO_VID_EVENT,
DpRxSs_NoVideoHandler, &DpRxSsInst);
XDpRxSs_SetCallBack(&DpRxSsInst, XDPRXSS_HANDLER_DP_VBLANK_EVENT,
DpRxSs_VerticalBlankHandler, &DpRxSsInst);
XDpRxSs_SetCallBack(&DpRxSsInst, XDPRXSS_HANDLER_DP_TLOST_EVENT,
DpRxSs_TrainingLostHandler, &DpRxSsInst);
XDpRxSs_SetCallBack(&DpRxSsInst, XDPRXSS_HANDLER_DP_TDONE_EVENT,
DpRxSs_TrainingDoneHandler, &DpRxSsInst);
XDpRxSs_SetCallBack(&DpRxSsInst, XDPRXSS_HANDLER_DP_DWN_REQ_EVENT,
DpRxSs_DownReqestHandler, &DpRxSsInst);
XDpRxSs_SetCallBack(&DpRxSsInst, XDPRXSS_HANDLER_DP_DWN_REP_EVENT,
DpRxSs_DownReplyHandler, &DpRxSsInst);
XDpRxSs_SetCallBack(&DpRxSsInst, XDPRXSS_HANDLER_UNPLUG_EVENT,
DpRxSs_UnplugHandler, &DpRxSsInst);
XDpRxSs_SetCallBack(&DpRxSsInst, XDPRXSS_HANDLER_LINKBW_EVENT,
DpRxSs_LinkBandwidthHandler, &DpRxSsInst);
XDpRxSs_SetCallBack(&DpRxSsInst, XDPRXSS_HANDLER_PLL_RESET_EVENT,
DpRxSs_PllResetHandler, &DpRxSsInst);
#ifdef XPAR_INTC_0_DEVICE_ID
/* Initialize the interrupt controller driver so that it's ready to
* use, specify the device ID that was generated in xparameters.h
*/
Status = XIntc_Initialize(IntcInstPtr, XINTC_DEVICE_ID);
if (Status != XST_SUCCESS) {
xil_printf("Intc initialization failed!\n\r");
return XST_FAILURE;
}
/* Hook up interrupt service routine */
Status = XIntc_Connect(IntcInstPtr, XINTC_DPRXSS_DP_INTERRUPT_ID,
(XInterruptHandler)XDpRxSs_DpIntrHandler,
&DpRxSsInst);
if (Status != XST_SUCCESS) {
xil_printf("ERR: DP RX SS DP interrupt connect failed!\n\r");
return XST_FAILURE;
}
/* Enable the interrupt vector at the interrupt controller */
XIntc_Enable(IntcInstPtr, XINTC_DPRXSS_DP_INTERRUPT_ID);
/* Start the interrupt controller such that interrupts are recognized
* and handled by the processor
*/
Status = XIntc_Start(IntcInstPtr, XIN_REAL_MODE);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
#else
/* The configuration parameters of the interrupt controller */
XScuGic_Config *IntcConfig;
/* Initialize the interrupt controller driver so that it is ready to
* use.
*/
IntcConfig = XScuGic_LookupConfig(XINTC_DEVICE_ID);
if (NULL == IntcConfig) {
return XST_FAILURE;
}
Status = XScuGic_CfgInitialize(IntcInstPtr, IntcConfig,
IntcConfig->CpuBaseAddress);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/* Connect the device driver handler that will be called when an
* interrupt for the device occurs, the handler defined above performs
* the specific interrupt processing for the device
*/
Status = XScuGic_Connect(IntcInstPtr, XINTC_DPRXSS_DP_INTERRUPT_ID,
(Xil_InterruptHandler)XDpRxSs_DpIntrHandler,
&DpRxSsInst);
if (Status != XST_SUCCESS) {
xil_printf("ERR: DP RX SS DP interrupt connect failed!\n\r");
return XST_FAILURE;
}
/* Enable the interrupt for the Pixel Splitter device */
XScuGic_Enable(IntcInstance, XINTC_DPRXSS_DP_INTERRUPT_ID);
#endif
/* Initialize the exception table. */
Xil_ExceptionInit();
/* Register the interrupt controller handler with the exception
* table.
*/
Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,
(Xil_ExceptionHandler)XINTC_HANDLER, IntcInstPtr);
/* Enable exceptions. */
Xil_ExceptionEnable();
return (XST_SUCCESS);
}
/*****************************************************************************/
/**
*
* This function is the callback function for when a video mode change interrupt
* occurs.
*
* @param InstancePtr is a pointer to the XDpRxSs instance.
*
* @return None.
*
* @note None.
*
******************************************************************************/
void DpRxSs_VideoModeHandler(void *InstancePtr)
{
XDpRxSs *DpRxSsPtr = (XDpRxSs *)InstancePtr;
xil_printf("Interrupt: video mode change.\n\r");
if (DpRxSsPtr->VBlankCount >= 20) {
DpRxSs_DetectResolution(DpRxSsPtr);
/* User is responsible for resetting the video pipe */
}
}
/*****************************************************************************/
/**
*
* This function will present the resolution of the incoming video stream.
*
* @param InstancePtr is a pointer to the XDpRxSs instance.
*
* @return None.
*
* @note The resolution will be rounded up to the nearest resolution
* present in the XVidC_VideoTimingModes table.
*
******************************************************************************/
void DpRxSs_DetectResolution(XDpRxSs *InstancePtr)
{
u32 DpHres, DpVres;
u32 GetResCount = 0;
do {
DpHres = XDpRxSs_ReadReg(InstancePtr->DpPtr->Config.BaseAddr,
XDPRXSS_MSA_HRES);
DpVres = XDpRxSs_ReadReg(InstancePtr->DpPtr->Config.BaseAddr,
XDPRXSS_MSA_VRES);
GetResCount++;
XDpRxSs_WaitUs(InstancePtr, 1000);
} while (((DpHres == 0) || (DpVres == 0)) && (GetResCount < 2000));
xil_printf("\n*** Detected resolution: %u x %u ***\n", DpHres, DpVres);
}
/*****************************************************************************/
/**
*
* This function is the callback function for when a no video interrupt occurs.
*
* @param InstancePtr is a pointer to the XDpRxSs instance.
*
* @return None.
*
* @note None.
*
******************************************************************************/
void DpRxSs_NoVideoHandler(void *InstancePtr)
{
xil_printf("Interrupt: no-video flags in the VBID field after active "
"video has been received.\n\r");
}
/*****************************************************************************/
/**
*
* This function is the callback function for when the training done interrupt
* occurs.
*
* @param InstancePtr is a pointer to the XDpRxSs instance.
*
* @return None.
*
* @note None.
*
******************************************************************************/
void DpRxSs_TrainingDoneHandler(void *InstancePtr)
{
xil_printf("Interrupt: training done.\n\r");
}
/*****************************************************************************/
/**
*
* This function is the callback function for when a down request interrupt
* occurs.
*
* @param InstancePtr is a pointer to the XDpRxSs instance.
*
* @return None.
*
* @note None.
*
******************************************************************************/
void DpRxSs_DownReqestHandler(void *InstancePtr)
{
XDpRxSs *DpRxSsPtr = (XDpRxSs *)InstancePtr;
xil_printf("Interrupt: down request.\n\r");
XDpRxSs_HandleDownReq(DpRxSsPtr);
}
/*****************************************************************************/
/**
*
* This function is the callback function for when a down reply interrupt
* occurs.
*
* @param InstancePtr is a pointer to the XDpRxSs instance.
*
* @return None.
*
* @note None.
*
******************************************************************************/
void DpRxSs_DownReplyHandler(void *InstancePtr)
{
xil_printf("Interrupt: down reply.\n\r");
}
/*****************************************************************************/
/**
*
* 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 training lost interrupt
* occurs.
*
* @param InstancePtr is a pointer to the XDpRxSs instance.
*
* @return None.
*
* @note None.
*
******************************************************************************/
void DpRxSs_TrainingLostHandler(void *InstancePtr)
{
xil_printf("Interrupt: training done.\n\r");
}
/*****************************************************************************/
/**
*
* This function is the callback function for when the unplug event occurs.
*
* @param InstancePtr is a pointer to the XDpRxSs instance.
*
* @return None.
*
* @note None.
*
******************************************************************************/
void DpRxSs_UnplugHandler(void *InstancePtr)
{
xil_printf("Interrupt: unplug event.\n\r");
/* User is responsible to take corrective actions */
}
/*****************************************************************************/
/**
*
* This function is the callback function for when the link bandwidth change
* occurs.
*
* @param InstancePtr is a pointer to the XDpRxSs instance.
*
* @return None.
*
* @note None.
*
******************************************************************************/
void DpRxSs_LinkBandwidthHandler(void *InstancePtr)
{
xil_printf("Interrupt: link bandwidth change request.\n\r");
/* User is responsible to re-initialize Video Phy if link rate
* is mismatching.
*/
}
/*****************************************************************************/
/**
*
* This function is the callback function for PLL reset request.
*
* @param InstancePtr is a pointer to the XDpRxSs instance.
*
* @return None.
*
* @note None.
*
******************************************************************************/
void DpRxSs_PllResetHandler(void *InstancePtr)
{
xil_printf("Interrupt: PLL reset request.\n\r");
/* User is responsible to reset Video Phy */
}