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dptx: I2C writes do not use an offset.

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Signed-off-by: Andrei-Liviu Simion <andrei.simion@xilinx.com>
This commit is contained in:
Andrei-Liviu Simion 2014-10-28 14:55:01 -07:00 • committed by Suneel Garapati
parent 822c9b0147
commit b8682ec6fb
2 changed files with 6 additions and 22 deletions
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24
XilinxProcessorIPLib/drivers/dptx/src/xdptx.c
View file

@ -812,8 +812,8 @@ u32 XDptx_AuxWrite(XDptx *InstancePtr, u32 DpcdAddress, u32 BytesToWrite,
* @note None.
*
*******************************************************************************/
u32 XDptx_IicRead(XDptx *InstancePtr, u8 IicAddress, u8 Offset,
u8 BytesToRead, void *ReadData)
u32 XDptx_IicRead(XDptx *InstancePtr, u8 IicAddress, u8 Offset, u8 BytesToRead,
void *ReadData)
{
u32 Status;
XDptx_AuxTransaction Request;
@ -856,8 +856,6 @@ u32 XDptx_IicRead(XDptx *InstancePtr, u8 IicAddress, u8 Offset,
*
* @param InstancePtr is a pointer to the XDptx instance.
* @param IicAddress is the address on the I2C bus of the target device.
* @param Offset is the sub-address of the targeted I2C device that the
* write will start at.
* @param BytesToWrite is the number of bytes to write.
* @param WriteData is a pointer to a buffer which will be used as the
* data source for the write.
@ -872,18 +870,16 @@ u32 XDptx_IicRead(XDptx *InstancePtr, u8 IicAddress, u8 Offset,
* @note None.
*
*******************************************************************************/
u32 XDptx_IicWrite(XDptx *InstancePtr, u8 IicAddress, u8 Offset,
u8 BytesToWrite, void *WriteData)
u32 XDptx_IicWrite(XDptx *InstancePtr, u8 IicAddress, u8 BytesToWrite,
void *WriteData)
{
u32 Status;
XDptx_AuxTransaction Request;
u8 AuxData[2];
/* Verify arguments. */
Xil_AssertNonvoid(InstancePtr != NULL);
Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
Xil_AssertNonvoid(IicAddress <= 0xFF);
Xil_AssertNonvoid(Offset <= 0xFF);
Xil_AssertNonvoid(BytesToWrite <= 0xFF);
Xil_AssertNonvoid(WriteData != NULL);
@ -891,18 +887,6 @@ u32 XDptx_IicWrite(XDptx *InstancePtr, u8 IicAddress, u8 Offset,
return XST_DEVICE_NOT_FOUND;
}
/* Setup the I2C-over-AUX write transaction with the address. */
Request.Address = IicAddress;
Request.CmdCode = XDPTX_AUX_CMD_I2C_WRITE_MOT;
Request.NumBytes = 2;
AuxData[0] = Offset;
AuxData[1] = 0;
Request.Data = AuxData;
Status = XDptx_AuxRequest(InstancePtr, &Request);
if (Status != XST_SUCCESS) {
return Status;
}
/* Send I2C-over-AUX read transaction. */
Status = XDptx_AuxCommon(InstancePtr, XDPTX_AUX_CMD_I2C_WRITE,
IicAddress, BytesToWrite, (u8 *)WriteData);

4
XilinxProcessorIPLib/drivers/dptx/src/xdptx.h
View file

@ -763,8 +763,8 @@ u32 XDptx_AuxWrite(XDptx *InstancePtr, u32 Address, u32 BytesToWrite,
void *WriteData);
u32 XDptx_IicRead(XDptx *InstancePtr, u8 IicAddress, u8 Offset, u8 BytesToRead,
void *ReadData);
u32 XDptx_IicWrite(XDptx *InstancePtr, u8 IicAddress, u8 Offset,
u8 BytesToWrite, void *WriteData);
u32 XDptx_IicWrite(XDptx *InstancePtr, u8 IicAddress, u8 BytesToWrite,
void *WriteData);
/* xdptx.c: Functions for controlling the link configuration. */
u32 XDptx_SetDownspread(XDptx *InstancePtr, u8 Enable);