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dptx: Added remote IIC write sideband message.

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Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
This commit is contained in:
Andrei-Liviu Simion 2014-10-24 19:41:49 -07:00 • committed by Suneel Garapati
parent 3d78e1ab5f
commit 10e6141d5b
3 changed files with 57 additions and 0 deletions
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2
XilinxProcessorIPLib/drivers/dptx/src/xdptx.h
View file

@ -844,6 +844,8 @@ u32 XDptx_SendSbMsgRemoteDpcdWrite(XDptx *InstancePtr, u8 LinkCountTotal,
u8 *RelativeAddress, u32 DpcdAddress, u32 BytesToWrite, u8 *WriteData);
u32 XDptx_SendSbMsgRemoteDpcdRead(XDptx *InstancePtr, u8 LinkCountTotal,
u8 *RelativeAddress, u32 DpcdAddress, u32 BytesToRead, u8 *ReadData);
u32 XDptx_SendSbMsgRemoteIicWrite(XDptx *InstancePtr, u8 LinkCountTotal,
u8 *RelativeAddress, u8 IicDeviceId, u8 BytesToWrite, u8 *WriteData);
u32 XDptx_SendSbMsgRemoteIicRead(XDptx *InstancePtr, u8 LinkCountTotal,
u8 *RelativeAddress, u8 IicDeviceId, u8 BytesToRead, u8 *ReadData);
u32 XDptx_SendSbMsgLinkAddress(XDptx *InstancePtr, u8 LinkCountTotal,

1
XilinxProcessorIPLib/drivers/dptx/src/xdptx_hw.h
View file

@ -1181,6 +1181,7 @@
#define XDPTX_SBMSG_REMOTE_DPCD_READ 0x20
#define XDPTX_SBMSG_REMOTE_DPCD_WRITE 0x21
#define XDPTX_SBMSG_REMOTE_I2C_READ 0x22
#define XDPTX_SBMSG_REMOTE_I2C_WRITE 0x23
/* @} */
/******************* Macros (Inline Functions) Definitions ********************/

54
XilinxProcessorIPLib/drivers/dptx/src/xdptx_mst.c
View file

@ -1168,6 +1168,60 @@ u32 XDptx_SendSbMsgRemoteDpcdRead(XDptx *InstancePtr, u8 LinkCountTotal,
return XST_SUCCESS;
}
u32 XDptx_SendSbMsgRemoteIicWrite(XDptx *InstancePtr, u8 LinkCountTotal,
u8 *RelativeAddress, u8 IicDeviceId, u8 BytesToWrite, u8 *WriteData)
{
u32 Status;
XDptx_SidebandMsg Msg;
XDptx_SidebandReply SbMsgReply;
u8 Index;
/* Verify arguments. */
Xil_AssertNonvoid(InstancePtr != NULL);
Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
Xil_AssertNonvoid(LinkCountTotal > 0);
Xil_AssertNonvoid((RelativeAddress != NULL) || (LinkCountTotal == 1));
Xil_AssertNonvoid(IicDeviceId <= 0xFF);
Xil_AssertNonvoid(BytesToWrite <= 0xFF);
Xil_AssertNonvoid(WriteData != NULL);
/* Prepare the sideband message header. */
Msg.Header.LinkCountTotal = LinkCountTotal - 1;
for (Index = 0; Index < (Msg.Header.LinkCountTotal - 1); Index++) {
Msg.Header.RelativeAddress[Index] = RelativeAddress[Index];
}
Msg.Header.LinkCountRemaining = Msg.Header.LinkCountTotal - 1;
Msg.Header.BroadcastMsg = 0;
Msg.Header.PathMsg = 0;
Msg.Header.MsgBodyLength = 5 + BytesToWrite;
Msg.Header.StartOfMsgTransaction = 1;
Msg.Header.EndOfMsgTransaction = 1;
Msg.Header.MsgSequenceNum = 0;
Msg.Header.Crc = XDptx_Crc4CalculateHeader(&Msg.Header);
/* Prepare the sideband message body. */
Msg.Body.MsgData[0] = XDPTX_SBMSG_REMOTE_I2C_WRITE;
Msg.Body.MsgData[1] = RelativeAddress[Msg.Header.LinkCountTotal - 1] << 4;
Msg.Body.MsgData[2] = IicDeviceId; /* Write I2C device ID. */
Msg.Body.MsgData[3] = BytesToWrite; /* Number of bytes to write. */
for (Index = 0; Index < BytesToWrite; Index++) {
Msg.Body.MsgData[Index + 4] = WriteData[Index];
}
Msg.Body.MsgDataLength = Msg.Header.MsgBodyLength - 1;
Msg.Body.Crc = XDptx_Crc8CalculateBody(&Msg.Body);
/* Submit the REMOTE_I2C_WRITE transaction message request. */
Status = XDptx_SendSbMsg(InstancePtr, &Msg);
if (Status != XST_SUCCESS) {
/* The AUX write transaction used to send the sideband message
* failed. */
return Status;
}
Status = XDptx_ReceiveSbMsg(InstancePtr, &SbMsgReply);
return Status;
}
/******************************************************************************/
/**
* This function will send a REMOTE_I2C_READ sideband message which will read