xdppsu_interrupt.c File Reference

Overview

This file XDpPsu interrupt handlers.

Upon Hot- Plug-Detect (HPD - DisplayPort cable is plugged/unplugged or the monitor is turned on/off), the main link will be trained.

Note

None.

 MODIFICATION HISTORY:

 Ver   Who Date     Changes



 1.0    aad 10/19/17    Initial Release
 1.1   aad 02/22/18    Fixed the header
 1.3   rbv 07/15/20    Fixed C++ compilation issues

Functions
void	DpPsu_Run (Run_Config *RunCfgPtr)
	This function will configure and establish a link with the receiver device, afterwards, a video stream will start to be sent over the main link. More...
void	DpPsu_IsrHpdEvent (void *ref)
	This function is called when a Hot-Plug-Detect (HPD) event is received by the DisplayPort TX core. More...
void	DpPsu_IsrHpdPulse (void *ref)
	This function is called when a Hot-Plug-Detect (HPD) pulse is received by the DisplayPort TX core. More...
void	DpPsu_SetupVideoStream (Run_Config *RunCfgPtr)
	This function is called to setup the VideoStream with its video and MSA attributes. More...

Function Documentation

void DpPsu_IsrHpdEvent

(

void *

ref

)

This function is called when a Hot-Plug-Detect (HPD) event is received by the DisplayPort TX core.

The XDPPSU_INTERRUPT_STATUS_HPD_EVENT_MASK bit of the core's XDPPSU_INTERRUPT_STATUS register indicates that an HPD event has occurred.

Parameters

InstancePtr

is a pointer to the XDpPsu instance.

Returns

None.

Note

Use the XDpPsu_SetHpdEventHandler driver function to set this function as the handler for HPD pulses.

References DpPsu_Run().

Referenced by SetupInterrupts().

void DpPsu_IsrHpdPulse

(

void *

ref

)

This function is called when a Hot-Plug-Detect (HPD) pulse is received by the DisplayPort TX core.

The XDPPSU_INTERRUPT_STATUS_HPD_PULSE_DETECTED_MASK bit of the core's XDPPSU_INTERRUPT_STATUS register indicates that an HPD event has occurred.

Parameters

InstancePtr

is a pointer to the XDpPsu instance.

Returns

None.

Note

Use the XDpPsu_SetHpdPulseHandler driver function to set this function as the handler for HPD pulses.

References DpPsu_SetupVideoStream().

Referenced by SetupInterrupts().

void DpPsu_Run

(

Run_Config *

RunCfgPtr

)

This function will configure and establish a link with the receiver device, afterwards, a video stream will start to be sent over the main link.

Parameters

RunCfgPtr

is a pointer to the application configuration structure.

Returns

• XST_SUCCESS if main link was successfully established.
• XST_FAILURE otherwise.

Note

None.

References DpPsu_SetupVideoStream(), InitDpDmaSubsystem(), XDpDma_DisplayGfxFrameBuffer(), and XDpDma_SetChannelState().

Referenced by DpPsu_IsrHpdEvent().

void DpPsu_SetupVideoStream

(

Run_Config *

RunCfgPtr

)

This function is called to setup the VideoStream with its video and MSA attributes.

Parameters

RunCfgPtr

is a pointer to the application configuration structure.

Returns

None.

Note

Use the XDpPsu_SetHpdEventHandler driver function to set this function as the handler for HPD pulses.

Referenced by DpPsu_IsrHpdPulse(), and DpPsu_Run().