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*
* Copyright (C) 2010 - 2014 Xilinx, Inc. All rights reserved.
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******************************************************************************/
/*****************************************************************************/
/**
*
* @file xgpiops.h
*
* The Xilinx PS GPIO driver. This driver supports the Xilinx PS GPIO
* Controller.
*
* The GPIO Controller supports the following features:
* - 4 banks
* - Masked writes (There are no masked reads)
* - Bypass mode
* - Configurable Interrupts (Level/Edge)
*
* This driver is intended to be RTOS and processor independent. Any needs for
* dynamic memory management, threads or thread mutual exclusion, virtual
* memory, or cache control must be satisfied by the layer above this driver.
* This driver supports all the features listed above, if applicable.
*
* Driver Description
*
* The device driver enables higher layer software (e.g., an application) to
* communicate to the GPIO.
*
* Interrupts
*
* The driver provides interrupt management functions and an interrupt handler.
* Users of this driver need to provide callback functions. An interrupt handler
* example is available with the driver.
*
* Threads
*
* This driver is not thread safe. Any needs for threads or thread mutual
* exclusion must be satisfied by the layer above this driver.
*
* Asserts
*
* Asserts are used within all Xilinx drivers to enforce constraints on argument
* values. Asserts can be turned off on a system-wide basis by defining, at
* compile time, the NDEBUG identifier. By default, asserts are turned on and it
* is recommended that users leave asserts on during development.
*
* Building the driver
*
* The XGpioPs driver is composed of several source files. This allows the user
* to build and link only those parts of the driver that are necessary.
*
*
*
* MODIFICATION HISTORY:
*
* Ver Who Date Changes
* ----- ---- -------- -----------------------------------------------
* 1.00a sv 01/15/10 First Release
* 1.01a sv 04/15/12 Removed the APIs XGpioPs_SetMode, XGpioPs_SetModePin
* XGpioPs_GetMode, XGpioPs_GetModePin as they are not
* relevant to Zynq device.The interrupts are disabled
* for output pins on all banks during initialization.
* 1.02a hk 08/22/13 Added low level reset API
* 2.1 hk 04/29/14 Use Input data register DATA_RO for read. CR# 771667.
* 2.2 sk 10/13/14 Used Pin number in Bank instead of pin number
* passed to APIs. CR# 822636
*
*
*
******************************************************************************/
#ifndef XGPIOPS_H /* prevent circular inclusions */
#define XGPIOPS_H /* by using protection macros */
#ifdef __cplusplus
extern "C" {
#endif
/***************************** Include Files *********************************/
#include "xstatus.h"
#include "xgpiops_hw.h"
/************************** Constant Definitions *****************************/
/** @name Interrupt types
* @{
* The following constants define the interrupt types that can be set for each
* GPIO pin.
*/
#define XGPIOPS_IRQ_TYPE_EDGE_RISING 0 /**< Interrupt on Rising edge */
#define XGPIOPS_IRQ_TYPE_EDGE_FALLING 1 /**< Interrupt Falling edge */
#define XGPIOPS_IRQ_TYPE_EDGE_BOTH 2 /**< Interrupt on both edges */
#define XGPIOPS_IRQ_TYPE_LEVEL_HIGH 3 /**< Interrupt on high level */
#define XGPIOPS_IRQ_TYPE_LEVEL_LOW 4 /**< Interrupt on low level */
/*@}*/
#define XGPIOPS_BANK0 0 /**< GPIO Bank 0 */
#define XGPIOPS_BANK1 1 /**< GPIO Bank 1 */
#define XGPIOPS_BANK2 2 /**< GPIO Bank 2 */
#define XGPIOPS_BANK3 3 /**< GPIO Bank 3 */
#define XGPIOPS_MAX_BANKS 4 /**< Max banks in a GPIO device */
#define XGPIOPS_BANK_MAX_PINS 32 /**< Max pins in a GPIO bank */
#define XGPIOPS_DEVICE_MAX_PIN_NUM 118 /*< Max pins in the GPIO device
* 0 - 31, Bank 0
* 32 - 53, Bank 1
* 54 - 85, Bank 2
* 86 - 117, Bank 3
*/
/**************************** Type Definitions *******************************/
/****************************************************************************/
/**
* This handler data type allows the user to define a callback function to
* handle the interrupts for the GPIO device. The application using this
* driver is expected to define a handler of this type, to support interrupt
* driven mode. The handler executes in an interrupt context such that minimal
* processing should be performed.
*
* @param CallBackRef is a callback reference passed in by the upper layer
* when setting the callback functions for a GPIO bank. It is
* passed back to the upper layer when the callback is invoked. Its
* type is not important to the driver component, so it is a void
* pointer.
* @param Bank is the bank for which the interrupt status has changed.
* @param Status is the Interrupt status of the GPIO bank.
*
*****************************************************************************/
typedef void (*XGpioPs_Handler) (void *CallBackRef, int Bank, u32 Status);
/**
* This typedef contains configuration information for a device.
*/
typedef struct {
u16 DeviceId; /**< Unique ID of device */
u32 BaseAddr; /**< Register base address */
} XGpioPs_Config;
/**
* The XGpioPs driver instance data. The user is required to allocate a
* variable of this type for the GPIO device in the system. A pointer
* to a variable of this type is then passed to the driver API functions.
*/
typedef struct {
XGpioPs_Config GpioConfig; /**< Device configuration */
u32 IsReady; /**< Device is initialized and ready */
XGpioPs_Handler Handler; /**< Status handlers for all banks */
void *CallBackRef; /**< Callback ref for bank handlers */
} XGpioPs;
/***************** Macros (Inline Functions) Definitions *********************/
/************************** Function Prototypes ******************************/
/*
* Functions in xgpiops.c
*/
int XGpioPs_CfgInitialize(XGpioPs *InstancePtr, XGpioPs_Config *ConfigPtr,
u32 EffectiveAddr);
/*
* Bank APIs in xgpiops.c
*/
u32 XGpioPs_Read(XGpioPs *InstancePtr, u8 Bank);
void XGpioPs_Write(XGpioPs *InstancePtr, u8 Bank, u32 Data);
void XGpioPs_SetDirection(XGpioPs *InstancePtr, u8 Bank, u32 Direction);
u32 XGpioPs_GetDirection(XGpioPs *InstancePtr, u8 Bank);
void XGpioPs_SetOutputEnable(XGpioPs *InstancePtr, u8 Bank, u32 Enable);
u32 XGpioPs_GetOutputEnable(XGpioPs *InstancePtr, u8 Bank);
void XGpioPs_GetBankPin(u8 PinNumber, u8 *BankNumber, u8 *PinNumberInBank);
/*
* Pin APIs in xgpiops.c
*/
int XGpioPs_ReadPin(XGpioPs *InstancePtr, int Pin);
void XGpioPs_WritePin(XGpioPs *InstancePtr, int Pin, int Data);
void XGpioPs_SetDirectionPin(XGpioPs *InstancePtr, int Pin, int Direction);
int XGpioPs_GetDirectionPin(XGpioPs *InstancePtr, int Pin);
void XGpioPs_SetOutputEnablePin(XGpioPs *InstancePtr, int Pin, int Enable);
int XGpioPs_GetOutputEnablePin(XGpioPs *InstancePtr, int Pin);
/*
* Diagnostic functions in xgpiops_selftest.c
*/
int XGpioPs_SelfTest(XGpioPs *InstancePtr);
/*
* Functions in xgpiops_intr.c
*/
/*
* Bank APIs in xgpiops_intr.c
*/
void XGpioPs_IntrEnable(XGpioPs *InstancePtr, u8 Bank, u32 Mask);
void XGpioPs_IntrDisable(XGpioPs *InstancePtr, u8 Bank, u32 Mask);
u32 XGpioPs_IntrGetEnabled(XGpioPs *InstancePtr, u8 Bank);
u32 XGpioPs_IntrGetStatus(XGpioPs *InstancePtr, u8 Bank);
void XGpioPs_IntrClear(XGpioPs *InstancePtr, u8 Bank, u32 Mask);
void XGpioPs_SetIntrType(XGpioPs *InstancePtr, u8 Bank, u32 IntrType,
u32 IntrPolarity, u32 IntrOnAny);
void XGpioPs_GetIntrType(XGpioPs *InstancePtr, u8 Bank, u32 *IntrType,
u32 *IntrPolarity, u32 *IntrOnAny);
void XGpioPs_SetCallbackHandler(XGpioPs *InstancePtr, void *CallBackRef,
XGpioPs_Handler FuncPtr);
void XGpioPs_IntrHandler(XGpioPs *InstancePtr);
/*
* Pin APIs in xgpiops_intr.c
*/
void XGpioPs_SetIntrTypePin(XGpioPs *InstancePtr, int Pin, u8 IrqType);
u8 XGpioPs_GetIntrTypePin(XGpioPs *InstancePtr, int Pin);
void XGpioPs_IntrEnablePin(XGpioPs *InstancePtr, int Pin);
void XGpioPs_IntrDisablePin(XGpioPs *InstancePtr, int Pin);
int XGpioPs_IntrGetEnabledPin(XGpioPs *InstancePtr, int Pin);
int XGpioPs_IntrGetStatusPin(XGpioPs *InstancePtr, int Pin);
void XGpioPs_IntrClearPin(XGpioPs *InstancePtr, int Pin);
/*
* Functions in xgpiops_sinit.c
*/
XGpioPs_Config *XGpioPs_LookupConfig(u16 DeviceId);
#ifdef __cplusplus
}
#endif
#endif /* end of protection macro */