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spi: Use interrupt status register Tx empty bit

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Use interrupt status register Tx empty bit instead of status register

Signed-off-by: Subbaraya Sundeep Bhatta <sbhatta@xilinx.com>
Acked-by: Kedareswara rao Appana <appanad@xilinx.com>
This commit is contained in:
Subbaraya Sundeep Bhatta 2014-08-07 15:02:48 +05:30 • committed by Jagannadha Sutradharudu Teki
parent 10d10f8c2e
commit 9a61962682
3 changed files with 16 additions and 4 deletions
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9
XilinxProcessorIPLib/drivers/spi/src/xspi.c
View file

@ -90,6 +90,9 @@
* register inorder to work with CPOL and CPHA High Options.
* As per spec (Dual/Quad SPI Transaction instrunction 7,8,9)
* CR:732962
* 4.1 bss 08/07/14 Modified XSpi_Transfer to check for Interrupt Status
* register Tx Empty bit instead of Status register
* CR#810294.
* </pre>
*
******************************************************************************/
@ -687,8 +690,10 @@ int XSpi_Transfer(XSpi *InstancePtr, u8 *SendBufPtr,
* Transmit empty status bit
*/
do {
StatusReg = XSpi_GetStatusReg(InstancePtr);
} while ((StatusReg & XSP_SR_TX_EMPTY_MASK) == 0);
StatusReg = XSpi_IntrGetStatus(InstancePtr);
} while ((StatusReg & XSP_INTR_TX_EMPTY_MASK) == 0);
XSpi_IntrClear(InstancePtr,XSP_INTR_TX_EMPTY_MASK);
/*
* A transmit has just completed. Process received data

4
XilinxProcessorIPLib/drivers/spi/src/xspi.h
View file

@ -277,6 +277,10 @@
* block is used in the h/w design (CR 721229).
* 3.07a adk 11/10/13 Fixed CR:732962 Changes are made in the xspi.c file
* 4.0 adk 19/12/13 Updated as per the New Tcl API's
* 4.1 bss 08/07/14 Modified XSpi_Transfer in xspi.c and LoopbackTest in
* xspi_selftest.c to check for Interrupt Status
* register Tx Empty bit instead of Status register
* CR#810294.
*
*
* </pre>

7
XilinxProcessorIPLib/drivers/spi/src/xspi_selftest.c
View file

@ -305,12 +305,15 @@ static int LoopbackTest(XSpi *InstancePtr)
* empty status bit.
*/
do {
StatusReg = XSpi_GetStatusReg(InstancePtr);
} while ((StatusReg & XSP_SR_TX_EMPTY_MASK) == 0);
StatusReg = XSpi_IntrGetStatus(InstancePtr);
} while ((StatusReg & XSP_INTR_TX_EMPTY_MASK) == 0);
XSpi_IntrClear(InstancePtr, XSP_INTR_TX_EMPTY_MASK);
/*
* Receive and verify the data just transmitted.
*/
StatusReg = XSpi_GetStatusReg(InstancePtr);
while ((StatusReg & XSP_SR_RX_EMPTY_MASK) == 0) {
RxData = XSpi_ReadReg(InstancePtr->BaseAddr,