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dp: rx: Added audio info and extension packet received interrupt handlers.

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XDp_RxSetIntrInfoPktHandler and XDp_RxSetIntrExtPktHandler.

Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
This commit is contained in:
Andrei-Liviu Simion 2015-01-26 00:32:54 -08:00 • committed by Nava kishore Manne
parent 74cef5fbbb
commit b45d77cbe5
2 changed files with 99 additions and 5 deletions
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30
XilinxProcessorIPLib/drivers/dp/src/xdp.h
View file

@ -222,8 +222,14 @@
*
* <b>Audio</b>
*
* The driver does not handle audio. For an example as to how to configure and
* transmit audio, examples/xdptx_audio_example.c illustrates the required
* The driver in RX mode of operation may received audio info and extension
* packets. When this happens, if interrupts are enabled, the appropriate
* handlers will be invoked.
* Control functions are available for enabling, disabling, and resetting audio
* in the DisplayPort RX core.
*
* The TX driver does not handle audio. For an example as to how to configure
* and transmit audio, examples/xdptx_audio_example.c illustrates the required
* sequence in the TX mode of operation. The user will need to configure the
* audio source connected to the Displayport TX instance and set up the audio
* info frame as per user requirements.
@ -704,7 +710,21 @@ typedef struct {
passed to the valid
video callback
function. */
XDp_IntrHandler IntrTrainingDoneHandler;/**< Callback function for
XDp_IntrHandler IntrInfoPktHandler; /**< Callback function for audio
info packet received
interrupts. */
void *IntrInfoPktCallbackRef; /**< A pointer to the user data
passed to the audio info
packet callback
function. */
XDp_IntrHandler IntrExtPktHandler; /**< Callback function for audio
extension packet
received interrupts. */
void *IntrExtPktCallbackRef; /**< A pointer to the user data
passed to the audio
extension packet
callback function. */
XDp_IntrHandler IntrTrainingDoneHandler; /**< Callback function for
training done
interrupts. */
void *IntrTrainingDoneCallbackRef; /**< A pointer to the user data
@ -857,6 +877,10 @@ void XDp_RxSetIntrTrainingLostHandler(XDp *InstancePtr,
XDp_IntrHandler CallbackFunc, void *CallbackRef);
void XDp_RxSetIntrVideoHandler(XDp *InstancePtr,
XDp_IntrHandler CallbackFunc, void *CallbackRef);
void XDp_RxSetIntrInfoPktHandler(XDp *InstancePtr,
XDp_IntrHandler CallbackFunc, void *CallbackRef);
void XDp_RxSetIntrExtPktHandler(XDp *InstancePtr,
XDp_IntrHandler CallbackFunc, void *CallbackRef);
void XDp_RxSetIntrTrainingDoneHandler(XDp *InstancePtr,
XDp_IntrHandler CallbackFunc, void *CallbackRef);
void XDp_RxSetIntrBwChangeHandler(XDp *InstancePtr,

74
XilinxProcessorIPLib/drivers/dp/src/xdp_intr.c
View file

@ -396,6 +396,62 @@ void XDp_RxSetIntrVideoHandler(XDp *InstancePtr,
InstancePtr->RxInstance.IntrVideoCallbackRef = CallbackRef;
}
/******************************************************************************/
/**
* This function installs a callback function for when an audio info packet
* interrupt occurs.
*
* @param InstancePtr is a pointer to the XDp instance.
* @param CallbackFunc is the address to the callback function.
* @param CallbackRef is the user data item that will be passed to the
* callback function when it is invoked.
*
* @return None.
*
* @note None.
*
*******************************************************************************/
void XDp_RxSetIntrInfoPktHandler(XDp *InstancePtr,
XDp_IntrHandler CallbackFunc, void *CallbackRef)
{
/* Verify arguments. */
Xil_AssertVoid(InstancePtr != NULL);
Xil_AssertVoid(XDp_GetCoreType(InstancePtr) == XDP_RX);
Xil_AssertVoid(CallbackFunc != NULL);
Xil_AssertVoid(CallbackRef != NULL);
InstancePtr->RxInstance.IntrInfoPktHandler = CallbackFunc;
InstancePtr->RxInstance.IntrInfoPktCallbackRef = CallbackRef;
}
/******************************************************************************/
/**
* This function installs a callback function for when an audio extension packet
* interrupt occurs.
*
* @param InstancePtr is a pointer to the XDp instance.
* @param CallbackFunc is the address to the callback function.
* @param CallbackRef is the user data item that will be passed to the
* callback function when it is invoked.
*
* @return None.
*
* @note None.
*
*******************************************************************************/
void XDp_RxSetIntrExtPktHandler(XDp *InstancePtr,
XDp_IntrHandler CallbackFunc, void *CallbackRef)
{
/* Verify arguments. */
Xil_AssertVoid(InstancePtr != NULL);
Xil_AssertVoid(XDp_GetCoreType(InstancePtr) == XDP_RX);
Xil_AssertVoid(CallbackFunc != NULL);
Xil_AssertVoid(CallbackRef != NULL);
InstancePtr->RxInstance.IntrExtPktHandler = CallbackFunc;
InstancePtr->RxInstance.IntrExtPktCallbackRef = CallbackRef;
}
/******************************************************************************/
/**
* This function installs a callback function for when a training done interrupt
@ -623,8 +679,8 @@ static void XDp_RxInterruptHandler(XDp *InstancePtr)
{
u32 IntrStatus;
u8 IntrVmChange, IntrPowerState, IntrNoVideo, IntrVBlank,
IntrTrainingLost, IntrVideo, IntrTrainingDone, IntrBwChange,
IntrTp1, IntrTp2, IntrTp3;
IntrTrainingLost, IntrVideo, IntrInfoPkt, IntrExtPkt,
IntrTrainingDone, IntrBwChange, IntrTp1, IntrTp2, IntrTp3;
/* Determine what kind of interrupt(s) occurred.
* Note: XDP_RX_INTERRUPT_CAUSE is an RC (read-clear) register. */
@ -637,6 +693,9 @@ static void XDp_RxInterruptHandler(XDp *InstancePtr)
IntrTrainingLost = (IntrStatus &
XDP_RX_INTERRUPT_CAUSE_TRAINING_LOST_MASK);
IntrVideo = (IntrStatus & XDP_RX_INTERRUPT_CAUSE_VIDEO_MASK);
IntrInfoPkt = (IntrStatus & XDP_RX_INTERRUPT_CAUSE_INFO_PKT_MASK);
IntrExtPkt = (IntrStatus & XDP_RX_INTERRUPT_CAUSE_EXT_PKT_MASK);
IntrTrainingDone = (IntrStatus &
XDP_RX_INTERRUPT_CAUSE_TRAINING_DONE_MASK);
IntrBwChange = (IntrStatus & XDP_RX_INTERRUPT_CAUSE_BW_CHANGE_MASK);
@ -707,4 +766,15 @@ static void XDp_RxInterruptHandler(XDp *InstancePtr)
InstancePtr->RxInstance.IntrBwChangeHandler(
InstancePtr->RxInstance.IntrBwChangeCallbackRef);
}
/* An audio info packet has been received. */
if (IntrInfoPkt) {
InstancePtr->RxInstance.IntrInfoPktHandler(
InstancePtr->RxInstance.IntrInfoPktCallbackRef);
}
/* An audio extension packet has been received. */
if (IntrExtPkt) {
InstancePtr->RxInstance.IntrExtPktHandler(
InstancePtr->RxInstance.IntrExtPktCallbackRef);
}
}