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/*****************************************************************************/
/**
*
* @file xdptxss_mst_example.c
*
* This file contains a design example using the XDpTxSs 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 (DpTxSs_PlatformInit) and after
* DisplayPort TX subsystem start (XDpTxSs_Start) is complete,
* implement configuration of the video stream source in order to
* provide the DisplayPort TX Subsystem HIP input.
* The functions DpTxSs_PlatformInit and DpTxSs_StreamSrc are
* declared and are left up to the user implement.
*
* <pre>
* MODIFICATION HISTORY:
*
* Ver Who Date Changes
* ---- --- -------- --------------------------------------------------
* 1.00 sha 07/01/15 Initial release.
* </pre>
*
******************************************************************************/
/***************************** Include Files *********************************/
#include "xdptxss.h"
#include "xil_printf.h"
#include "xil_types.h"
#include "xparameters.h"
#include "xstatus.h"
/************************** Constant Definitions *****************************/
/* The unique device ID of the DisplayPort Transmitter Subsystem HIP instance
* to be used
*/
#define XDPTXSS_DEVICE_ID XPAR_DPTXSS_0_DEVICE_ID
/* If set to 1, example will run in MST mode. Otherwise, in SST mode.
* In MST mode, this example reads the EDID of RX devices if connected in
* daisy-chain.
*/
#define DPTXSS_MST 1
#define DPTXSS_LINK_RATE XDPTXSS_LINK_BW_SET_540GBPS
#define DPTXSS_LANE_COUNT XDPTXSS_LANE_COUNT_SET_4
/* The video resolution from the display mode timings (DMT) table to use for
* DisplayPort TX Subsystem. It can be set to use preferred video mode for
* EDID of RX device.
*/
#define DPTXSS_VID_MODE XVIDC_VM_USE_EDID_PREFERRED
/* The color depth (bits per color component) to use DisplayPort TX
* Subsystem.
*/
#define DPTXSS_BPC 8
/***************** Macros (Inline Functions) Definitions *********************/
/**************************** Type Definitions *******************************/
/************************** Function Prototypes ******************************/
u32 DpTxSs_MstExample(u16 DeviceId);
u32 DpTxSs_PlatformInit(void);
u32 DpTxSs_StreamSrc(u8 VerticalSplit);
/************************** Variable Definitions *****************************/
XDpTxSs DpTxSsInst; /* The DPTX Subsystem instance.*/
/************************** Function Definitions *****************************/
/*****************************************************************************/
/**
*
* This is the main function for XDpTxSs 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 TX Subsystem %s example\n\r",
DPTXSS_MST?"MST":"SST");
xil_printf("(c) 2015 by Xilinx\n\r");
xil_printf("-------------------------------------------\n\r\n\r");
Status = DpTxSs_MstExample(XDPTXSS_DEVICE_ID);
if (Status != XST_SUCCESS) {
xil_printf("DisplayPort TX Subsystem %s example failed."
"\n\r",DPTXSS_MST?"MST":"SST");
return XST_FAILURE;
}
xil_printf("DisplayPort TX Subsystem %s example passed\n\r",
DPTXSS_MST?"MST":"SST");
return XST_SUCCESS;
}
/*****************************************************************************/
/**
*
* This function is the main entry point for the MST/SST example using the
* XDpTxSs driver.
*
* @param DeviceId is the unique device ID of the DisplayPort TX
* Subsystem core.
*
* @return
* - XST_SUCCESS if DisplayPort TX Subsystem configured in SST/MST
* successfully.
* - XST_FAILURE, if DisplayPort TX Subsystem failed to configure
* in SST/MST.
*
* @note None.
*
******************************************************************************/
u32 DpTxSs_MstExample(u16 DeviceId)
{
u32 Status;
u8 VSplitMode = 0;
XDpTxSs_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 = DpTxSs_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 TX Subsystem */
ConfigPtr = XDpTxSs_LookupConfig(DeviceId);
if (!ConfigPtr) {
return XST_FAILURE;
}
/* Copy the device configuration into the DpTxSsInst's Config
* structure. */
Status = XDpTxSs_CfgInitialize(&DpTxSsInst, ConfigPtr,
ConfigPtr->BaseAddress);
if (Status != XST_SUCCESS) {
xil_printf("DPTXSS config initialization failed.\n\r");
return XST_FAILURE;
}
/* Check for SST/MST support */
if (DpTxSsInst.UsrOpt.MstSupport) {
xil_printf("\n\rINFO:DPTXSS is MST enabled. DPTXSS can be "
"switched to SST/MST\n\r\n\r");
}
else {
xil_printf("\n\rINFO:DPTXSS is SST enabled. DPTXSS works "
"only in SST mode.\n\r\n\r");
}
/* Disable interrupts. */
Xil_ExceptionDisable();
/* Read capabilities of RX device */
Status = XDpTxSs_GetRxCapabilities(&DpTxSsInst);
if (Status != XST_SUCCESS) {
xil_printf("ERR: RX device is not connected.\r\n");
/* Enable interrupts. */
Xil_ExceptionEnable();
return XST_FAILURE;
}
/* Set Link rate and lane count to maximum */
XDpTxSs_SetLinkRate(&DpTxSsInst, DPTXSS_LINK_RATE);
XDpTxSs_SetLaneCount(&DpTxSsInst, DPTXSS_LANE_COUNT);
/* Set video mode */
XDpTxSs_SetVidMode(&DpTxSsInst, DPTXSS_VID_MODE);
/* Set BPC */
XDpTxSs_SetBpc(&DpTxSsInst, DPTXSS_BPC);
/* Check whether DPTXSS and RX device is in MST */
Status = XDpTxSs_IsMstCapable(&DpTxSsInst);
if (DpTxSsInst.UsrOpt.MstSupport && DPTXSS_MST &&
(Status == XST_SUCCESS)) {
/* Set DPTXSS in MST mode */
XDpTxSs_SetTransportMode(&DpTxSsInst, 1);
}
else {
/* Set DPTXSS in SST mode */
XDpTxSs_SetTransportMode(&DpTxSsInst, 0);
}
/* Start DPTXSS parameters set */
Status = XDpTxSs_Start(&DpTxSsInst);
if (Status != XST_SUCCESS) {
xil_printf("ERR:DPTX SS start failed\n\r");
/* Enable interrupts. */
Xil_ExceptionEnable();
return XST_FAILURE;
}
if ((DpTxSsInst.UsrOpt.VmId == (XVIDC_VM_UHD2_60_P)) &&
(DpTxSsInst.UsrOpt.MstSupport)) {
VSplitMode = 1;
}
else {
VSplitMode = 0;
}
/* Do stream setup in this function. It is up to the user to implement
* this function.
*/
DpTxSs_StreamSrc(VSplitMode);
/* Enable interrupts. */
Xil_ExceptionEnable();
return XST_SUCCESS;
}
/*****************************************************************************/
/**
*
* This function initialize required platform-specifc peripherals.
*
* @param None.
*
* @return
* - XST_SUCCESS if required peripherals are initialized and
* configured successfully.
* - XST_FAILURE, otherwise.
*
* @note None.
*
******************************************************************************/
u32 DpTxSs_PlatformInit(void)
{
/* User is responsible to setup platform specific initialization */
return XST_SUCCESS;
}
/*****************************************************************************/
/**
*
* This function setup stream source to input DisplayPort TX Subsystem.
*
* @param VerticalSplit specifies whether to split video frame
* vertically into two different vertical halves.
* - 1 = Vertically split input frame
* - 0 = No vertically split input frame.
*
* @return
* - XST_SUCCESS if stream source is configured successfully.
* - XST_FAILURE, otherwise.
*
* @note None.
*
******************************************************************************/
u32 DpTxSs_StreamSrc(u8 VerticalSplit)
{
/* User is responsible to setup stream source to input DPTXSS */
return XST_SUCCESS;
}