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dp: rx: Added function header comments for primary source file.

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Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
This commit is contained in:
Andrei-Liviu Simion 2015-01-20 10:54:47 -08:00 • committed by Nava kishore Manne
parent f6d7ad2d02
commit 9463358c28
1 changed files with 81 additions and 0 deletions
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81
XilinxProcessorIPLib/drivers/dp/src/xdprx.c
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@ -189,6 +189,22 @@ u32 XDprx_InitializeRx(XDprx *InstancePtr)
return XST_SUCCESS;
}
/******************************************************************************/
/**
* This function checks if the reciever's internal registers indicate that link
* training has complete. That is, training has achieved channel equalization,
* symbol lock, and interlane alignment for all lanes currently in use.
*
* @param InstancePtr is a pointer to the XDprx instance.
*
* @return
* - XST_SUCCESS if the RX device has achieved clock recovery,
* channel equalization, symbol lock, and interlane alignment.
* - XST_FAILURE otherwise.
*
* @note None.
*
*******************************************************************************/
u32 XDprx_CheckLinkStatus(XDprx *InstancePtr)
{
u8 LaneCount;
@ -220,6 +236,17 @@ u32 XDprx_CheckLinkStatus(XDprx *InstancePtr)
return XST_SUCCESS;
}
/******************************************************************************/
/**
* This function enables the display timing generator (DTG).
*
* @param InstancePtr is a pointer to the XDprx instance.
*
* @return None.
*
* @note None.
*
*******************************************************************************/
void XDprx_DtgEn(XDprx *InstancePtr)
{
XDprx_WriteReg(InstancePtr->Config.BaseAddr, XDPRX_SOFT_RESET, 0x01);
@ -227,6 +254,17 @@ void XDprx_DtgEn(XDprx *InstancePtr)
XDprx_WriteReg(InstancePtr->Config.BaseAddr, XDPRX_DTG_ENABLE, 0x01);
}
/******************************************************************************/
/**
* This function disables the display timing generator (DTG).
*
* @param InstancePtr is a pointer to the XDprx instance.
*
* @return None.
*
* @note None.
*
*******************************************************************************/
void XDprx_DtgDis(XDprx *InstancePtr)
{
XDprx_WriteReg(InstancePtr->Config.BaseAddr, XDPRX_DTG_ENABLE, 0x00);
@ -234,6 +272,23 @@ void XDprx_DtgDis(XDprx *InstancePtr)
XDprx_WriteReg(InstancePtr->Config.BaseAddr, XDPRX_SOFT_RESET, 0x00);
}
/******************************************************************************/
/**
* This function sets the maximum data rate to be exposed in the RX device's
* DisplayPort Configuration Data (DPCD) registers.
*
* @param InstancePtr is a pointer to the XDprx instance.
* @param LinkRate is the link rate to be used over the main link based on
* one of the following selects:
* - XDPRX_LINK_BW_SET_162GBPS = 0x06 (for a 1.62 Gbps data rate)
* - XDPRX_LINK_BW_SET_270GBPS = 0x0A (for a 2.70 Gbps data rate)
* - XDPRX_LINK_BW_SET_540GBPS = 0x14 (for a 5.40 Gbps data rate)
*
* @return None.
*
* @note None.
*
*******************************************************************************/
void XDprx_SetLinkRate(XDprx *InstancePtr, u8 LinkRate)
{
InstancePtr->LinkConfig.LinkRate = LinkRate;
@ -248,6 +303,19 @@ void XDprx_SetLinkRate(XDprx *InstancePtr, u8 LinkRate)
0x01);
}
/******************************************************************************/
/**
* This function sets the maximum lane count to be exposed in the RX device's
* DisplayPort Configuration Data (DPCD) registers.
*
* @param InstancePtr is a pointer to the XDprx instance.
* @param LaneCount is the number of lanes to be used over the main link.
*
* @return None.
*
* @note None.
*
*******************************************************************************/
void XDprx_SetLaneCount(XDprx *InstancePtr, u8 LaneCount)
{
InstancePtr->LinkConfig.LaneCount = LaneCount;
@ -262,6 +330,19 @@ void XDprx_SetLaneCount(XDprx *InstancePtr, u8 LaneCount)
0x01);
}
/******************************************************************************/
/**
* This function configures the number of pixels output through the user data
* interface.
*
* @param InstancePtr is a pointer to the XDprx instance.
* @param UserPixelWidth is the user pixel width to be configured.
*
* @return None.
*
* @note None.
*
*******************************************************************************/
void XDprx_SetUserPixelWidth(XDprx *InstancePtr, u8 UserPixelWidth)
{
XDprx_WriteReg(InstancePtr->Config.BaseAddr, XDPRX_USER_PIXEL_WIDTH,