2c8f92039d
Added initial support Xilinx Embedded Software. Signed-off-by: Jagannadha Sutradharudu Teki <jaganna@xilinx.com>
150 lines
5 KiB
C
Executable file
150 lines
5 KiB
C
Executable file
/******************************************************************************
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*
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* Copyright (C) 2003 - 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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* @file xgpio_sinit.c
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*
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* The implementation of the XGpio driver's static initialzation
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* functionality.
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*
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* @note
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*
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* None
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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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* 2.01a jvb 10/13/05 First release
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* 2.11a mta 03/21/07 Updated to new coding style
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* </pre>
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*
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*****************************************************************************/
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/***************************** Include Files ********************************/
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#include "xstatus.h"
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#include "xparameters.h"
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#include "xgpio_i.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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/************************** Variable Definitions ****************************/
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/************************** Function Prototypes *****************************/
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/******************************************************************************/
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/**
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* Lookup the device configuration based on the unique device ID. The table
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* ConfigTable contains the configuration info for each device in the system.
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*
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* @param DeviceId is the device identifier to lookup.
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*
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* @return
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* - A pointer of data type XGpio_Config which points to the
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* device configuration if DeviceID is found.
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* - NULL if DeviceID is not found.
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*
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* @note None.
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*
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******************************************************************************/
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XGpio_Config *XGpio_LookupConfig(u16 DeviceId)
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{
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XGpio_Config *CfgPtr = NULL;
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int Index;
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for (Index = 0; Index < XPAR_XGPIO_NUM_INSTANCES; Index++) {
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if (XGpio_ConfigTable[Index].DeviceId == DeviceId) {
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CfgPtr = &XGpio_ConfigTable[Index];
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break;
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}
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}
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return CfgPtr;
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}
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/****************************************************************************/
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/**
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* Initialize the XGpio instance provided by the caller based on the
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* given DeviceID.
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*
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* Nothing is done except to initialize the InstancePtr.
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*
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* @param InstancePtr is a pointer to an XGpio instance. The memory the
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* pointer references must be pre-allocated by the caller. Further
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* calls to manipulate the instance/driver through the XGpio API
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* must be made with this pointer.
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* @param DeviceId is the unique id of the device controlled by this XGpio
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* instance. Passing in a device id associates the generic XGpio
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* instance to a specific device, as chosen by the caller or
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* application developer.
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*
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* @return
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* - XST_SUCCESS if the initialization was successfull.
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* - XST_DEVICE_NOT_FOUND if the device configuration data was not
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* found for a device with the supplied device ID.
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*
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* @note None.
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*
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*****************************************************************************/
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int XGpio_Initialize(XGpio * InstancePtr, u16 DeviceId)
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{
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XGpio_Config *ConfigPtr;
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/*
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* Assert arguments
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*/
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Xil_AssertNonvoid(InstancePtr != NULL);
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/*
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* Lookup configuration data in the device configuration table.
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* Use this configuration info down below when initializing this
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* driver.
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*/
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ConfigPtr = XGpio_LookupConfig(DeviceId);
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if (ConfigPtr == (XGpio_Config *) NULL) {
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InstancePtr->IsReady = 0;
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return (XST_DEVICE_NOT_FOUND);
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}
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return XGpio_CfgInitialize(InstancePtr, ConfigPtr,
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ConfigPtr->BaseAddress);
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}
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