Overview

This file contains interrupt related functions for Xilinx HDMI RX core.

Please see xv_hdmirx1.h for more details of the driver.

MODIFICATION HISTORY:

Ver Who Date Changes

1.00 EB 02/05/19 Initial release.

Functions
void	XV_HdmiRx1_IntrHandler (void *InstancePtr)
	This function is the interrupt handler for the HDMI RX driver. More...

int	XV_HdmiRx1_SetCallback (XV_HdmiRx1 InstancePtr, XV_HdmiRx1_HandlerType HandlerType, void CallbackFunc, void *CallbackRef)
	This function installs an asynchronous callback function for the given HandlerType: More...

Function Documentation

void XV_HdmiRx1_IntrHandler ( void * InstancePtr )

This function is the interrupt handler for the HDMI RX driver.

This handler reads the pending interrupt from PIO, DDC, TIMDET, AUX, AUD and LNKSTA peripherals, determines the source of the interrupts, clears the interrupts and calls callbacks accordingly.

The application is responsible for connecting this function to the interrupt system. Application beyond this driver is also responsible for providing callbacks to handle interrupts and installing the callbacks using XV_HdmiRx1_SetCallback() during initialization phase. An example delivered with this driver demonstrates how this could be done.

Parameters

InstancePtr is a pointer to the XV_HdmiRx1 instance that just interrupted.

Returns: None.

Note: None.

References XV_HdmiRx1_Config::BaseAddress, XV_HdmiRx1::Config, XV_HdmiRx1::IsReady, XV_HDMIRX1_AUD_STA_IRQ_MASK, XV_HDMIRX1_AUD_STA_OFFSET, XV_HDMIRX1_AUX_STA_IRQ_MASK, XV_HDMIRX1_AUX_STA_OFFSET, XV_HDMIRX1_DDC_STA_IRQ_MASK, XV_HDMIRX1_DDC_STA_OFFSET, XV_HDMIRX1_FRL_STA_IRQ_MASK, XV_HDMIRX1_FRL_STA_OFFSET, XV_HDMIRX1_LNKSTA_STA_IRQ_MASK, XV_HDMIRX1_LNKSTA_STA_OFFSET, XV_HDMIRX1_PIO_STA_IRQ_MASK, XV_HDMIRX1_PIO_STA_OFFSET, XV_HdmiRx1_ReadReg, XV_HDMIRX1_TMR_STA_IRQ_MASK, XV_HDMIRX1_TMR_STA_OFFSET, XV_HDMIRX1_VTD_STA_IRQ_MASK, and XV_HDMIRX1_VTD_STA_OFFSET.

int XV_HdmiRx1_SetCallback	(	XV_HdmiRx1 *	InstancePtr,
		XV_HdmiRx1_HandlerType	HandlerType,
		void *	CallbackFunc,
		void *	CallbackRef
	)

This function installs an asynchronous callback function for the given HandlerType:

HandlerType                 Callback Function Type
-------------------------   -----------------------------------------------
(XV_HDMIRX1_HANDLER_VTD)      VtdCallback
(XV_HDMIRX1_HANDLER_AUX)      AuxCallback
(XV_HDMIRX1_HANDLER_AUD)      AudCallback
(XV_HDMIRX1_HANDLER_LNKSTA)   LnkStaCallback
(XV_HDMIRX1_HANDLER_PIO)      PioCallback

Parameters

InstancePtr	is a pointer to the HDMI RX core instance.
HandlerType	specifies the type of handler.
CallbackFunc	is the address of the callback function.
CallbackRef	is a user data item that will be passed to the callback function when it is invoked.

Returns

XST_SUCCESS if callback function installed successfully.
XST_INVALID_PARAM when HandlerType is invalid.

Note: Invoking this function for a handler that already has been installed replaces it with the new handler.

Overview

Functions

Function Documentation