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dp: tx: Added function header to XDp_TxSendSbMsgRemoteIicWrite.

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Added function description.

Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
This commit is contained in:
Andrei-Liviu Simion 2015-01-26 00:05:33 -08:00 • committed by Nava kishore Manne
parent 83f6fe1f77
commit 7368c8e1c9
1 changed files with 28 additions and 0 deletions
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28
XilinxProcessorIPLib/drivers/dp/src/xdp_mst.c
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@ -1666,6 +1666,34 @@ u32 XDp_TxSendSbMsgRemoteDpcdRead(XDp *InstancePtr, u8 LinkCountTotal,
return XST_SUCCESS;
}
/******************************************************************************/
/**
* This function will send a REMOTE_I2C_WRITE sideband message which will write
* to the specified I2C address of a downstream DisplayPort device.
*
* @param InstancePtr is a pointer to the XDp instance.
* @param LinkCountTotal is the number of DisplayPort links from the
* DisplayPort source to the target DisplayPort device.
* @param RelativeAddress is the relative address from the DisplayPort
* source to the target DisplayPort device.
* @param IicDeviceId is the address on the I2C bus of the target device.
* @param BytesToWrite is the number of bytes to write to the I2C address.
* @param WriteData is a pointer to a buffer that will be written.
*
* @return
* - XST_SUCCESS if the reply to the sideband message was
* successfully obtained and it indicates an acknowledge.
* - XST_DEVICE_NOT_FOUND if no RX device is connected.
* - XST_ERROR_COUNT_MAX if either waiting for a reply, or an AUX
* request timed out.
* - XST_FAILURE otherwise - if an AUX read or write transaction
* failed, the header or body CRC of the sideband message did not
* match the calculated value, or the a reply was negative
* acknowledged (NACK'ed).
*
* @note None.
*
*******************************************************************************/
u32 XDp_TxSendSbMsgRemoteIicWrite(XDp *InstancePtr, u8 LinkCountTotal,
u8 *RelativeAddress, u8 IicDeviceId, u8 BytesToWrite, u8 *WriteData)
{