/* $Id: xgpio_sinit.c,v 1.1 2006/02/16 23:28:46 moleres Exp $ *//********************************************************************************       XILINX IS PROVIDING THIS DESIGN, CODE, OR INFORMATION "AS IS"*       AS A COURTESY TO YOU, SOLELY FOR USE IN DEVELOPING PROGRAMS AND*       SOLUTIONS FOR XILINX DEVICES.  BY PROVIDING THIS DESIGN, CODE,*       OR INFORMATION AS ONE POSSIBLE IMPLEMENTATION OF THIS FEATURE,*       APPLICATION OR STANDARD, XILINX IS MAKING NO REPRESENTATION*       THAT THIS IMPLEMENTATION IS FREE FROM ANY CLAIMS OF INFRINGEMENT,*       AND YOU ARE RESPONSIBLE FOR OBTAINING ANY RIGHTS YOU MAY REQUIRE*       FOR YOUR IMPLEMENTATION.  XILINX EXPRESSLY DISCLAIMS ANY*       WARRANTY WHATSOEVER WITH RESPECT TO THE ADEQUACY OF THE*       IMPLEMENTATION, INCLUDING BUT NOT LIMITED TO ANY WARRANTIES OR*       REPRESENTATIONS THAT THIS IMPLEMENTATION IS FREE FROM CLAIMS OF*       INFRINGEMENT, IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS*       FOR A PARTICULAR PURPOSE.**       (c) Copyright 2005 Xilinx Inc.*       All rights reserved.*******************************************************************************//*** @file xgpio_sinit.c** The implementation of the XGpio component's static initialzation* functionality.** @note** None** <pre>* MODIFICATION HISTORY:** Ver   Who  Date     Changes* ----- ---- -------- -----------------------------------------------* 2.01a jvb  10/13/05 First release* </pre>******************************************************************************//***************************** Include Files ********************************/#include "xstatus.h"#include "xparameters.h"#include "xgpio_i.h"/************************** Constant Definitions ****************************//**************************** Type Definitions ******************************//***************** Macros (Inline Functions) Definitions ********************//************************** Variable Definitions ****************************//************************** Function Prototypes *****************************//******************************************************************************//*** Lookup the device configuration based on the unique device ID.  The table* ConfigTable contains the configuration info for each device in the system.** @param DeviceId is the device identifier to lookup.** @return** - A pointer of data type XGpio_Config which points to the device*   configuration if DeviceID is found.* - XNULL if DeviceID is not found.** @note** None.*******************************************************************************/XGpio_Config *XGpio_LookupConfig(Xuint16 DeviceId){    XGpio_Config *CfgPtr = XNULL;    int i;    for (i=0; i < XPAR_XGPIO_NUM_INSTANCES; i++)    {        if (XGpio_ConfigTable[i].DeviceId == DeviceId)        {            CfgPtr = &XGpio_ConfigTable[i];            break;        }    }    return CfgPtr;}/****************************************************************************//*** Initialize the XGpio instance provided by the caller based on the* given DeviceID.** Nothing is done except to initialize the InstancePtr.** @param InstancePtr is a pointer to an XGpio instance. The memory the pointer*        references must be pre-allocated by the caller. Further calls to*        manipulate the component through the XGpio API must be made with this*        pointer.** @param DeviceId is the unique id of the device controlled by this XGpio*        component.  Passing in a device id associates the generic XGpio*        instance to a specific device, as chosen by the caller or application*        developer.** @return** - XST_SUCCESS           Initialization was successfull.* - XST_DEVICE_NOT_FOUND  Device configuration data was not found for a device*                         with the supplied device ID.** @note** None.******************************************************************************/XStatus XGpio_Initialize(XGpio *InstancePtr, Xuint16 DeviceId){    XGpio_Config *ConfigPtr;    /*     * Assert arguments     */    XASSERT_NONVOID(InstancePtr != XNULL);    /*     * Lookup configuration data in the device configuration table.     * Use this configuration info down below when initializing this component.     */    ConfigPtr = XGpio_LookupConfig(DeviceId);    if (ConfigPtr == (XGpio_Config *)XNULL)    {        InstancePtr->IsReady = 0;        return(XST_DEVICE_NOT_FOUND);    }    return XGpio_CfgInitialize(InstancePtr, ConfigPtr, ConfigPtr->BaseAddress);}