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dptx: Removed example with both interrupt and timer.

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Redundant since there are separate examples for both interrupt and timer
functionality.

Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
This commit is contained in:
Andrei-Liviu Simion 2014-07-28 17:21:09 -07:00 • committed by Jagannadha Sutradharudu Teki
parent 57cd141001
commit 78ee97db7f
1 changed files with 0 additions and 326 deletions
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326
XilinxProcessorIPLib/drivers/dptx/examples/xdptx_intr_timer_example.c
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/*******************************************************************************
*
* Copyright (C) 2014 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 THE
* XILINX CONSORTIUM 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 xdptx_intr_timer_example.c
*
* Contains a design example using the XDptx driver with interrupts and. Upon Hot-
* Plug-Detect (HPD - DisplayPort cable is plugged/unplugged or the monitor is
* turned on/off), the main link will be trained.
*
* @note This example requires an interrupt controller connected to the
* processor and the DisplayPort TX core in the system.
* @note This example requires an AXI timer in the system.
* @note For this example to display output, the user will need to
* implement initialization of the system (Dptx_PlatformInit) and,
* after training is complete, implement configuration of the video
* stream source in order to provide the DisplayPort core with
* input (Dptx_ConfigureVidgen - called in xdptx_example_common.c).
* See XAPP1178 for reference.
* @note The functions Dptx_PlatformInit and Dptx_ConfigureVidgen are
* declared extern in xdptx_example_common.h and are left up to the
* user to implement.
*
* <pre>
* MODIFICATION HISTORY:
*
* Ver Who Date Changes
* ----- ---- -------- -----------------------------------------------
* 1.00a als 06/17/14 Initial creation.
* </pre>
*
*******************************************************************************/
/******************************* Include Files ********************************/
#include "xdptx.h"
#include "xdptx_example_common.h"
#include "xil_printf.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 XPAR parameters created in the
* xparameters.h file. */
#ifdef XPAR_INTC_0_DEVICE_ID
#define DP_INTERRUPT_ID XPAR_AXI_INTC_1_DISPLAYPORT_0_AXI_INT_INTR
#define INTC_DEVICE_ID XPAR_INTC_0_DEVICE_ID
#else
#define DP_INTERRUPT_ID XPAR_FABRIC_DISPLAYPORT_0_AXI_INT_INTR
#define INTC_DEVICE_ID XPAR_SCUGIC_SINGLE_DEVICE_ID
#endif /* XPAR_INTC_0_DEVICE_ID */
/****************************** Type Definitions ******************************/
/* Depending on whether the system is a MicroBlaze or ARM/Zynq SoC system,
* different drivers and associated types will be used. */
#ifdef XPAR_INTC_0_DEVICE_ID
#define INTC XIntc
#define INTC_HANDLER XIntc_InterruptHandler
#else
#define INTC XScuGic
#define INTC_HANDLER XScuGic_InterruptHandler
#endif /* XPAR_INTC_0_DEVICE_ID */
/**************************** Function Prototypes *****************************/
static u32 Dptx_SetupInterruptHandler(XDptx *InstancePtr);
static void Dptx_HpdEventHandler(void *InstancePtr);
static void Dptx_HpdPulseHandler(void *InstancePtr);
static void Dptx_CustomWaitUs(void *InstancePtr, u32 MicroSeconds);
/**************************** Variable Definitions ****************************/
INTC IntcInstance; /* The interrupt controller instance. */
XTmrCtr TimerCounterInst; /* The timer counter instance. */
/**************************** Function Definitions ****************************/
int main(void)
{
u32 Status;
/* Do platform initialization here. This is hardware system specific -
* it is up to the user to implement this function. */
Dptx_PlatformInit();
/******************/
/* 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
* SoC contains a timer, which is used when the driver calls the sleep
* function. */
XDptx_SetUserTimerHandler(&DptxInstance, &Dptx_CustomWaitUs,
&TimerCounterInst);
Status = Dptx_SetupExample(&DptxInstance, DPTX_DEVICE_ID);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
XDptx_EnableTrainAdaptive(&DptxInstance, TRAIN_ADAPTIVE);
XDptx_SetHasRedriverInPath(&DptxInstance, TRAIN_HAS_REDRIVER);
/* Setup interrupt handling in the system. */
Status = Dptx_SetupInterruptHandler(&DptxInstance);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/* Do not return in order to allow interrupt handling to run. */
while (1);
return XST_SUCCESS;
}
/******************************************************************************/
/**
* This function sets up the interrupt system such that interrupts caused by
* Hot-Plug-Detect (HPD) events and pulses are handled. This function is
* application-specific for systems that have an interrupt controller connected
* to the processor. The user should modify this function to fit the
* application.
*
* @param InstancePtr is a pointer to the XDptx instance.
*
* @return - XST_SUCCESS if the interrupt system was successfully set up.
* - XST_FAILURE otherwise.
*
* @note An interrupt controller must be present in the system, connected
* to the processor and the DisplayPort TX core.
*
*******************************************************************************/
static u32 Dptx_SetupInterruptHandler(XDptx *InstancePtr)
{
u32 Status;
/* Set the HPD interrupt handlers. */
XDptx_SetHpdEventHandler(InstancePtr, &Dptx_HpdEventHandler,
InstancePtr);
XDptx_SetHpdPulseHandler(InstancePtr, &Dptx_HpdPulseHandler,
InstancePtr);
/* Initialize interrupt controller driver. */
#ifdef XPAR_INTC_0_DEVICE_ID
Status = XIntc_Initialize(&IntcInstance, INTC_DEVICE_ID);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
#else
XScuGic_Config *IntcConfig;
IntcConfig = XScuGic_LookupConfig(INTC_DEVICE_ID);
Status = XScuGic_CfgInitialize(&IntcInstance, IntcConfig,
IntcConfig->CpuBaseAddress);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
XScuGic_SetPriorityTriggerType(&IntcInstance, DP_INTERRUPT_ID,
0xA0, 0x1);
#endif /* XPAR_INTC_0_DEVICE_ID */
/* 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. */
#ifdef XPAR_INTC_0_DEVICE_ID
Status = XIntc_Connect(&IntcInstance, DP_INTERRUPT_ID,
(XInterruptHandler)XDptx_HpdInterruptHandler, InstancePtr);
#else
Status = XScuGic_Connect(&IntcInstance, DP_INTERRUPT_ID,
(Xil_InterruptHandler)XDptx_HpdInterruptHandler, InstancePtr);
#endif /* XPAR_INTC_0_DEVICE_ID */
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
/* Start the interrupt controller. */
#ifdef XPAR_INTC_0_DEVICE_ID
Status = XIntc_Start(&IntcInstance, XIN_REAL_MODE);
if (Status != XST_SUCCESS) {
return XST_FAILURE;
}
XIntc_Enable(&IntcInstance, DP_INTERRUPT_ID);
#else
XScuGic_Enable(&IntcInstance, DP_INTERRUPT_ID);
#endif /* XPAR_INTC_0_DEVICE_ID */
/* Initialize the exception table. */
Xil_ExceptionInit();
/* Register the interrupt controller handler with the exception table. */
Xil_ExceptionRegisterHandler(XIL_EXCEPTION_ID_INT,
(Xil_ExceptionHandler)INTC_HANDLER, &IntcInstance);
/* Enable exceptions. */
Xil_ExceptionEnable();
return XST_SUCCESS;
}
/******************************************************************************/
/**
* This function is called when a Hot-Plug-Detect (HPD) event is received by the
* DisplayPort TX core. The XDPTX_INTERRUPT_STATUS_HPD_EVENT_MASK bit of the
* core's XDPTX_INTERRUPT_STATUS register indicates that an HPD event has
* occurred.
*
* @param InstancePtr is a pointer to the XDptx instance.
*
* @return None.
*
* @note Use the XDptx_SetHpdEventHandler driver function to set this
* function as the handler for HPD pulses.
*
*******************************************************************************/
static void Dptx_HpdEventHandler(void *InstancePtr)
{
XDptx *XDptx_InstancePtr = (XDptx *)InstancePtr;
if (XDptx_IsConnected(XDptx_InstancePtr)) {
xil_printf("+===> HPD connection event detected.\n");
Dptx_Run(XDptx_InstancePtr);
}
else {
xil_printf("+===> HPD disconnection event detected.\n\n");
}
}
/******************************************************************************/
/**
* This function is called when a Hot-Plug-Detect (HPD) pulse is received by the
* DisplayPort TX core. The XDPTX_INTERRUPT_STATUS_HPD_PULSE_DETECTED_MASK bit
* of the core's XDPTX_INTERRUPT_STATUS register indicates that an HPD event has
* occurred.
*
* @param InstancePtr is a pointer to the XDptx instance.
*
* @return None.
*
* @note Use the XDptx_SetHpdPulseHandler driver function to set this
* function as the handler for HPD pulses.
*
*******************************************************************************/
static void Dptx_HpdPulseHandler(void *InstancePtr)
{
XDptx *XDptx_InstancePtr = (XDptx *)InstancePtr;
xil_printf("===> HPD pulse detected.\n");
Dptx_Run(XDptx_InstancePtr);
}
/******************************************************************************/
/**
* This function is used to override the driver's default sleep functionality.
* For MicroBlaze systems, the XDptx_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 preferrable. For ARM/Zynq SoC systems, the SoC's timer is
* used - XDptx_WaitUs will ignore this custom timer handler.
*
* @param InstancePtr is a pointer to the XDptx instance.
*
* @return None.
*
* @note Use the XDptx_SetUserTimerHandler driver function to set this
* function as the handler for when the XDptx_WaitUs driver
* function is called.
*
*******************************************************************************/
static void Dptx_CustomWaitUs(void *InstancePtr, u32 MicroSeconds)
{
XDptx *XDptx_InstancePtr = (XDptx *)InstancePtr;
u32 TimerVal;
XTmrCtr_Start(XDptx_InstancePtr->UserTimerPtr, 0);
/* Wait specified number of useconds. */
do {
TimerVal = XTmrCtr_GetValue(XDptx_InstancePtr->UserTimerPtr, 0);
}
while (TimerVal < (MicroSeconds *
(XDptx_InstancePtr->Config.SAxiClkHz / 1000000)));
XTmrCtr_Stop(XDptx_InstancePtr->UserTimerPtr, 0);
}