| /****************************************************************************** |
| * |
| * Copyright (C) 2003 - 2014 Xilinx, Inc. All rights reserved. |
| * |
| * Permission is hereby granted, free of charge, to any person obtaining a copy |
| * of this software and associated documentation files (the "Software"), to deal |
| * in the Software without restriction, including without limitation the rights |
| * to use, copy, modify, merge, publish, distribute, sublicense, and/or sell |
| * copies of the Software, and to permit persons to whom the Software is |
| * furnished to do so, subject to the following conditions: |
| * |
| * The above copyright notice and this permission notice shall be included in |
| * all copies or substantial portions of the Software. |
| * |
| * Use of the Software is limited solely to applications: |
| * (a) running on a Xilinx device, or |
| * (b) that interact with a Xilinx device through a bus or interconnect. |
| * |
| * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR |
| * IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, |
| * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL |
| * XILINX BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, |
| * WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF |
| * OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE |
| * SOFTWARE. |
| * |
| * Except as contained in this notice, the name of the Xilinx shall not be used |
| * in advertising or otherwise to promote the sale, use or other dealings in |
| * this Software without prior written authorization from Xilinx. |
| * |
| ******************************************************************************/ |
| /*****************************************************************************/ |
| /** |
| * @file xgpio_sinit.c |
| * @addtogroup gpio_v4_1 |
| * @{ |
| * |
| * The implementation of the XGpio driver's static initialzation |
| * functionality. |
| * |
| * @note |
| * |
| * None |
| * |
| * <pre> |
| * MODIFICATION HISTORY: |
| * |
| * Ver Who Date Changes |
| * ----- ---- -------- ----------------------------------------------- |
| * 2.01a jvb 10/13/05 First release |
| * 2.11a mta 03/21/07 Updated to new coding style |
| * 4.0 sha 07/15/15 Defined macro XPAR_XGPIO_NUM_INSTANCES if not |
| * defined in xparameters.h |
| * </pre> |
| * |
| *****************************************************************************/ |
| |
| /***************************** Include Files ********************************/ |
| |
| #include "xstatus.h" |
| #include "xparameters.h" |
| #include "xgpio_i.h" |
| |
| /************************** Constant Definitions ****************************/ |
| |
| #ifndef XPAR_XGPIO_NUM_INSTANCES |
| #define XPAR_XGPIO_NUM_INSTANCES 0 |
| #endif |
| |
| /**************************** 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. |
| * - NULL if DeviceID is not found. |
| * |
| * @note None. |
| * |
| ******************************************************************************/ |
| XGpio_Config *XGpio_LookupConfig(u16 DeviceId) |
| { |
| XGpio_Config *CfgPtr = NULL; |
| |
| int Index; |
| |
| for (Index = 0; Index < XPAR_XGPIO_NUM_INSTANCES; Index++) { |
| if (XGpio_ConfigTable[Index].DeviceId == DeviceId) { |
| CfgPtr = &XGpio_ConfigTable[Index]; |
| 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 instance/driver through the XGpio API |
| * must be made with this pointer. |
| * @param DeviceId is the unique id of the device controlled by this XGpio |
| * instance. 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 if the initialization was successfull. |
| * - XST_DEVICE_NOT_FOUND if the device configuration data was not |
| * found for a device with the supplied device ID. |
| * |
| * @note None. |
| * |
| *****************************************************************************/ |
| int XGpio_Initialize(XGpio * InstancePtr, u16 DeviceId) |
| { |
| XGpio_Config *ConfigPtr; |
| |
| /* |
| * Assert arguments |
| */ |
| Xil_AssertNonvoid(InstancePtr != NULL); |
| |
| /* |
| * Lookup configuration data in the device configuration table. |
| * Use this configuration info down below when initializing this |
| * driver. |
| */ |
| ConfigPtr = XGpio_LookupConfig(DeviceId); |
| if (ConfigPtr == (XGpio_Config *) NULL) { |
| InstancePtr->IsReady = 0; |
| return (XST_DEVICE_NOT_FOUND); |
| } |
| |
| return XGpio_CfgInitialize(InstancePtr, ConfigPtr, |
| ConfigPtr->BaseAddress); |
| } |
| /** @} */ |