8296dcd0f1
This patch modifies the code according to MISRA-C 2012 and added support for ZynqMP. Signed-off-by: P L Sai Krishna <lakshmis@xilinx.com>
155 lines
4.9 KiB
C
155 lines
4.9 KiB
C
/******************************************************************************
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*
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* Copyright (C) 2010 - 2014 Xilinx, Inc. All rights reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* Use of the Software is limited solely to applications:
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* (a) running on a Xilinx device, or
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* (b) that interact with a Xilinx device through a bus or interconnect.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* XILINX CONSORTIUM BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
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* WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF
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* OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
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* SOFTWARE.
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*
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* Except as contained in this notice, the name of the Xilinx shall not be used
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* in advertising or otherwise to promote the sale, use or other dealings in
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* this Software without prior written authorization from Xilinx.
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*
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******************************************************************************/
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/*****************************************************************************/
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/**
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*
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* @file xspips_selftest.c
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*
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* This component contains the implementation of selftest functions for an SPI
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* device.
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*
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* <pre>
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* MODIFICATION HISTORY:
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*
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* Ver Who Date Changes
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* ----- ------ -------- ----------------------------------------------
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* 1.00 drg/jz 01/25/10 First release
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* 1.04a sg 01/30/13 SetDelays test includes DelayTestNss parameter.
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*
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* </pre>
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*
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******************************************************************************/
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/***************************** Include Files *********************************/
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#include "xspips.h"
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/************************** Constant Definitions *****************************/
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/**************************** Type Definitions *******************************/
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/***************** Macros (Inline Functions) Definitions *********************/
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/************************** Function Prototypes ******************************/
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/************************** Variable Definitions *****************************/
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/*****************************************************************************/
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/**
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*
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* Runs a self-test on the driver/device. The self-test is destructive in that
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* a reset of the device is performed in order to check the reset values of
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* the registers and to get the device into a known state.
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*
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* Upon successful return from the self-test, the device is reset.
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*
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* @param InstancePtr is a pointer to the XSpiPs instance.
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*
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* @return
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* - XST_SUCCESS if successful
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* - XST_REGISTER_ERROR indicates a register did not read or write
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* correctly.
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*
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* @note None.
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*
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******************************************************************************/
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s32 XSpiPs_SelfTest(XSpiPs *InstancePtr)
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{
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s32 Status;
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u32 Register;
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u8 DelayTestNss;
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u8 DelayTestBtwn;
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u8 DelayTestAfter;
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u8 DelayTestInit;
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Xil_AssertNonvoid(InstancePtr != NULL);
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Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
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/*
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* Reset the SPI device to leave it in a known good state
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*/
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XSpiPs_Reset(InstancePtr);
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/*
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* All the SPI registers should be in their default state right now.
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*/
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Register = XSpiPs_ReadReg(InstancePtr->Config.BaseAddress,
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XSPIPS_CR_OFFSET);
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if (Register != XSPIPS_CR_RESET_STATE) {
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return (s32)XST_REGISTER_ERROR;
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}
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Register = XSpiPs_ReadReg(InstancePtr->Config.BaseAddress,
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XSPIPS_SR_OFFSET);
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if (Register != XSPIPS_ISR_RESET_STATE) {
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return (s32)XST_REGISTER_ERROR;
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}
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DelayTestNss = 0x5AU;
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DelayTestBtwn = 0xA5U;
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DelayTestAfter = 0xAAU;
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DelayTestInit = 0x55U;
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/*
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* Write and read the delay register, just to be sure there is some
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* hardware out there.
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*/
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Status = XSpiPs_SetDelays(InstancePtr, DelayTestNss, DelayTestBtwn,
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DelayTestAfter, DelayTestInit);
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if (Status != (s32)XST_SUCCESS) {
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return Status;
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}
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XSpiPs_GetDelays(InstancePtr, &DelayTestNss, &DelayTestBtwn,
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&DelayTestAfter, &DelayTestInit);
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if ((0x5AU != DelayTestNss) || (0xA5U != DelayTestBtwn) ||
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(0xAAU != DelayTestAfter) || (0x55U != DelayTestInit)) {
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return (s32)XST_REGISTER_ERROR;
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}
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Status = XSpiPs_SetDelays(InstancePtr, 0U, 0U, 0U, 0U);
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if (Status != (s32)XST_SUCCESS) {
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return Status;
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}
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/*
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* Reset the SPI device to leave it in a known good state
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*/
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XSpiPs_Reset(InstancePtr);
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return (s32)XST_SUCCESS;
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}
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