+++ /dev/null
-/******************************************************************************
-*
-* Copyright (C) 2010 - 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 xgpiops.c
-* @addtogroup gpiops_v2_1
-* @{
-*
-* The XGpioPs driver. Functions in this file are the minimum required functions
-* for this driver. See xgpiops.h for a detailed description of the driver.
-*
-* <pre>
-* 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.
-* 2.1 hk 04/29/14 Use Input data register DATA_RO for read. CR# 771667.
-*
-* </pre>
-*
-******************************************************************************/
-
-/***************************** Include Files *********************************/
-
-#include "xgpiops.h"
-
-/************************** Constant Definitions *****************************/
-
-/**************************** Type Definitions *******************************/
-
-/***************** Macros (Inline Functions) Definitions *********************/
-
-/************************** Variable Definitions *****************************/
-
-/*
- * This structure defines the mapping of the pin numbers to the banks when
- * the driver APIs are used for working on the individual pins.
- */
-unsigned int XGpioPsPinTable[] = {
- 31, /* 0 - 31, Bank 0 */
- 53, /* 32 - 53, Bank 1 */
- 85, /* 54 - 85, Bank 2 */
- 117 /* 86 - 117 Bank 3 */
-};
-
-/************************** Function Prototypes ******************************/
-
-extern void StubHandler(void *CallBackRef, int Bank, u32 Status);
-
-/*****************************************************************************/
-/*
-*
-* This function initializes a XGpioPs instance/driver.
-* All members of the XGpioPs instance structure are initialized and
-* StubHandlers are assigned to the Bank Status Handlers.
-*
-* @param InstancePtr is a pointer to the XGpioPs instance.
-* @param ConfigPtr points to the XGpioPs device configuration structure.
-* @param EffectiveAddr is the device base address in the virtual memory
-* address space. If the address translation is not used then the
-* physical address should be passed.
-* Unexpected errors may occur if the address mapping is changed
-* after this function is invoked.
-*
-* @return XST_SUCCESS always.
-*
-* @note None.
-*
-******************************************************************************/
-int XGpioPs_CfgInitialize(XGpioPs *InstancePtr, XGpioPs_Config *ConfigPtr,
- u32 EffectiveAddr)
-{
-
- Xil_AssertNonvoid(InstancePtr != NULL);
- Xil_AssertNonvoid(ConfigPtr != NULL);
-
- /*
- * Set some default values for instance data, don't indicate the device
- * is ready to use until everything has been initialized successfully.
- */
- InstancePtr->IsReady = 0;
- InstancePtr->GpioConfig.BaseAddr = EffectiveAddr;
- InstancePtr->GpioConfig.DeviceId = ConfigPtr->DeviceId;
- InstancePtr->Handler = StubHandler;
-
- /*
- * By default, interrupts are not masked in GPIO. Disable
- * interrupts for all pins in all the 4 banks.
- */
- XGpioPs_WriteReg(InstancePtr->GpioConfig.BaseAddr,
- XGPIOPS_INTDIS_OFFSET, 0xFFFFFFFF);
-
- XGpioPs_WriteReg(InstancePtr->GpioConfig.BaseAddr,
- ((1) * XGPIOPS_REG_MASK_OFFSET) +
- XGPIOPS_INTDIS_OFFSET, 0xFFFFFFFF);
-
- XGpioPs_WriteReg(InstancePtr->GpioConfig.BaseAddr,
- ((2) * XGPIOPS_REG_MASK_OFFSET) +
- XGPIOPS_INTDIS_OFFSET, 0xFFFFFFFF);
-
- XGpioPs_WriteReg(InstancePtr->GpioConfig.BaseAddr,
- ((3) * XGPIOPS_REG_MASK_OFFSET) +
- XGPIOPS_INTDIS_OFFSET, 0xFFFFFFFF);
-
- /*
- * Indicate the component is now ready to use.
- */
- InstancePtr->IsReady = XIL_COMPONENT_IS_READY;
-
- return XST_SUCCESS;
-}
-
-/****************************************************************************/
-/**
-*
-* Read the Data register of the specified GPIO bank.
-*
-* @param InstancePtr is a pointer to the XGpioPs instance.
-* @param Bank is the bank number of the GPIO to operate on.
-* Valid values are 0 to XGPIOPS_MAX_BANKS - 1.
-*
-* @return Current value of the Data register.
-*
-* @note This function is used for reading the state of all the GPIO pins
-* of specified bank.
-*
-*****************************************************************************/
-u32 XGpioPs_Read(XGpioPs *InstancePtr, u8 Bank)
-{
- Xil_AssertNonvoid(InstancePtr != NULL);
- Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
- Xil_AssertNonvoid(Bank < XGPIOPS_MAX_BANKS);
-
- return XGpioPs_ReadReg(InstancePtr->GpioConfig.BaseAddr,
- ((Bank) * XGPIOPS_DATA_BANK_OFFSET) +
- XGPIOPS_DATA_RO_OFFSET);
-}
-
-/****************************************************************************/
-/**
-*
-* Read Data from the specified pin.
-*
-* @param InstancePtr is a pointer to the XGpioPs instance.
-* @param Pin is the pin number for which the data has to be read.
-* Valid values are 0 to XGPIOPS_DEVICE_MAX_PIN_NUM - 1.
-* See xgpiops.h for the mapping of the pin numbers in the banks.
-*
-* @return Current value of the Pin (0 or 1).
-*
-* @note This function is used for reading the state of the specified
-* GPIO pin.
-*
-*****************************************************************************/
-int XGpioPs_ReadPin(XGpioPs *InstancePtr, int Pin)
-{
- u8 Bank;
- u8 PinNumber;
-
- Xil_AssertNonvoid(InstancePtr != NULL);
- Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
- Xil_AssertNonvoid(Pin < XGPIOPS_DEVICE_MAX_PIN_NUM);
-
- /*
- * Get the Bank number and Pin number within the bank.
- */
- XGpioPs_GetBankPin(Pin, &Bank, &PinNumber);
-
- return (XGpioPs_ReadReg(InstancePtr->GpioConfig.BaseAddr,
- ((Bank) * XGPIOPS_DATA_BANK_OFFSET) +
- XGPIOPS_DATA_RO_OFFSET) >> PinNumber) & 1;
-
-}
-
-/****************************************************************************/
-/**
-*
-* Write to the Data register of the specified GPIO bank.
-*
-* @param InstancePtr is a pointer to the XGpioPs instance.
-* @param Bank is the bank number of the GPIO to operate on.
-* Valid values are 0 to XGPIOPS_MAX_BANKS - 1.
-* @param Data is the value to be written to the Data register.
-*
-* @return None.
-*
-* @note This function is used for writing to all the GPIO pins of
-* the bank. The previous state of the pins is not maintained.
-*
-*****************************************************************************/
-void XGpioPs_Write(XGpioPs *InstancePtr, u8 Bank, u32 Data)
-{
- Xil_AssertVoid(InstancePtr != NULL);
- Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
- Xil_AssertVoid(Bank < XGPIOPS_MAX_BANKS);
-
- XGpioPs_WriteReg(InstancePtr->GpioConfig.BaseAddr,
- ((Bank) * XGPIOPS_DATA_BANK_OFFSET) +
- XGPIOPS_DATA_OFFSET, Data);
-}
-
-/****************************************************************************/
-/**
-*
-* Write data to the specified pin.
-*
-* @param InstancePtr is a pointer to the XGpioPs instance.
-* @param Pin is the pin number to which the Data is to be written.
-* Valid values are 0 to XGPIOPS_DEVICE_MAX_PIN_NUM - 1.
-* @param Data is the data to be written to the specified pin (0 or 1).
-*
-* @return None.
-*
-* @note This function does a masked write to the specified pin of
-* the specified GPIO bank. The previous state of other pins
-* is maintained.
-*
-*****************************************************************************/
-void XGpioPs_WritePin(XGpioPs *InstancePtr, int Pin, int Data)
-{
- u32 RegOffset;
- u32 Value;
- u8 Bank;
- u8 PinNumber;
-
- Xil_AssertVoid(InstancePtr != NULL);
- Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
- Xil_AssertVoid(Pin < XGPIOPS_DEVICE_MAX_PIN_NUM);
-
- /*
- * Get the Bank number and Pin number within the bank.
- */
- XGpioPs_GetBankPin(Pin, &Bank, &PinNumber);
-
- if (PinNumber > 15) {
- /*
- * There are only 16 data bits in bit maskable register.
- */
- PinNumber -= 16;
- RegOffset = XGPIOPS_DATA_MSW_OFFSET;
- } else {
- RegOffset = XGPIOPS_DATA_LSW_OFFSET;
- }
-
- /*
- * Get the 32 bit value to be written to the Mask/Data register where
- * the upper 16 bits is the mask and lower 16 bits is the data.
- */
- Data &= 0x01;
- Value = ~(1 << (PinNumber + 16)) & ((Data << PinNumber) | 0xFFFF0000);
- XGpioPs_WriteReg(InstancePtr->GpioConfig.BaseAddr,
- ((Bank) * XGPIOPS_DATA_MASK_OFFSET) +
- RegOffset, Value);
-}
-
-
-
-/****************************************************************************/
-/**
-*
-* Set the Direction of the pins of the specified GPIO Bank.
-*
-* @param InstancePtr is a pointer to the XGpioPs instance.
-* @param Bank is the bank number of the GPIO to operate on.
-* Valid values are 0 to XGPIOPS_MAX_BANKS - 1.
-* @param Direction is the 32 bit mask of the Pin direction to be set for
-* all the pins in the Bank. Bits with 0 are set to Input mode,
-* bits with 1 are set to Output Mode.
-*
-* @return None.
-*
-* @note This function is used for setting the direction of all the pins
-* in the specified bank. The previous state of the pins is
-* not maintained.
-*
-*****************************************************************************/
-void XGpioPs_SetDirection(XGpioPs *InstancePtr, u8 Bank, u32 Direction)
-{
- Xil_AssertVoid(InstancePtr != NULL);
- Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
- Xil_AssertVoid(Bank < XGPIOPS_MAX_BANKS);
-
- XGpioPs_WriteReg(InstancePtr->GpioConfig.BaseAddr,
- ((Bank) * XGPIOPS_REG_MASK_OFFSET) +
- XGPIOPS_DIRM_OFFSET, Direction);
-}
-
-/****************************************************************************/
-/**
-*
-* Set the Direction of the specified pin.
-*
-* @param InstancePtr is a pointer to the XGpioPs instance.
-* @param Pin is the pin number to which the Data is to be written.
-* Valid values are 0 to XGPIOPS_DEVICE_MAX_PIN_NUM - 1.
-* @param Direction is the direction to be set for the specified pin.
-* Valid values are 0 for Input Direction, 1 for Output Direction.
-*
-* @return None.
-*
-*****************************************************************************/
-void XGpioPs_SetDirectionPin(XGpioPs *InstancePtr, int Pin, int Direction)
-{
- u8 Bank;
- u8 PinNumber;
- u32 DirModeReg;
-
- Xil_AssertVoid(InstancePtr != NULL);
- Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
- Xil_AssertVoid(Pin < XGPIOPS_DEVICE_MAX_PIN_NUM);
- Xil_AssertVoid((Direction == 0) || (Direction == 1));
-
- /*
- * Get the Bank number and Pin number within the bank.
- */
- XGpioPs_GetBankPin(Pin, &Bank, &PinNumber);
-
- DirModeReg = XGpioPs_ReadReg(InstancePtr->GpioConfig.BaseAddr,
- ((Bank) * XGPIOPS_REG_MASK_OFFSET) +
- XGPIOPS_DIRM_OFFSET);
-
- if (Direction) { /* Output Direction */
- DirModeReg |= (1 << PinNumber);
- } else { /* Input Direction */
- DirModeReg &= ~ (1 << PinNumber);
- }
-
- XGpioPs_WriteReg(InstancePtr->GpioConfig.BaseAddr,
- ((Bank) * XGPIOPS_REG_MASK_OFFSET) +
- XGPIOPS_DIRM_OFFSET, DirModeReg);
-}
-
-/****************************************************************************/
-/**
-*
-* Get the Direction of the pins of the specified GPIO Bank.
-*
-* @param InstancePtr is a pointer to the XGpioPs instance.
-* @param Bank is the bank number of the GPIO to operate on.
-* Valid values are 0 to XGPIOPS_MAX_BANKS - 1.
-*
-* return Returns a 32 bit mask of the Direction register. Bits with 0 are
-* in Input mode, bits with 1 are in Output Mode.
-*
-* @note None.
-*
-*****************************************************************************/
-u32 XGpioPs_GetDirection(XGpioPs *InstancePtr, u8 Bank)
-{
- Xil_AssertNonvoid(InstancePtr != NULL);
- Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
- Xil_AssertNonvoid(Bank < XGPIOPS_MAX_BANKS);
-
- return XGpioPs_ReadReg(InstancePtr->GpioConfig.BaseAddr,
- ((Bank) * XGPIOPS_REG_MASK_OFFSET) +
- XGPIOPS_DIRM_OFFSET);
-}
-
-/****************************************************************************/
-/**
-*
-* Get the Direction of the specified pin.
-*
-* @param InstancePtr is a pointer to the XGpioPs instance.
-* @param Pin is the pin number for which the Direction is to be
-* retrieved.
-* Valid values are 0 to XGPIOPS_DEVICE_MAX_PIN_NUM - 1.
-*
-* @return Direction of the specified pin.
-* - 0 for Input Direction
-* - 1 for Output Direction
-*
-* @note None.
-*
-*****************************************************************************/
-int XGpioPs_GetDirectionPin(XGpioPs *InstancePtr, int Pin)
-{
- u8 Bank;
- u8 PinNumber;
-
- Xil_AssertNonvoid(InstancePtr != NULL);
- Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
- Xil_AssertNonvoid(Pin < XGPIOPS_DEVICE_MAX_PIN_NUM);
-
- /*
- * Get the Bank number and Pin number within the bank.
- */
- XGpioPs_GetBankPin(Pin, &Bank, &PinNumber);
-
- return (XGpioPs_ReadReg(InstancePtr->GpioConfig.BaseAddr,
- ((Bank) * XGPIOPS_REG_MASK_OFFSET) +
- XGPIOPS_DIRM_OFFSET) >> PinNumber) & 1;
-}
-
-/****************************************************************************/
-/**
-*
-* Set the Output Enable of the pins of the specified GPIO Bank.
-*
-* @param InstancePtr is a pointer to the XGpioPs instance.
-* @param Bank is the bank number of the GPIO to operate on.
-* Valid values are 0 to XGPIOPS_MAX_BANKS - 1.
-* @param OpEnable is the 32 bit mask of the Output Enables to be set for
-* all the pins in the Bank. The Output Enable of bits with 0 are
-* disabled, the Output Enable of bits with 1 are enabled.
-*
-* @return None.
-*
-* @note This function is used for setting the Output Enables of all the
-* pins in the specified bank. The previous state of the Output
-* Enables is not maintained.
-*
-*****************************************************************************/
-void XGpioPs_SetOutputEnable(XGpioPs *InstancePtr, u8 Bank, u32 OpEnable)
-{
- Xil_AssertVoid(InstancePtr != NULL);
- Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
- Xil_AssertVoid(Bank < XGPIOPS_MAX_BANKS);
-
- XGpioPs_WriteReg(InstancePtr->GpioConfig.BaseAddr,
- ((Bank) * XGPIOPS_REG_MASK_OFFSET) +
- XGPIOPS_OUTEN_OFFSET, OpEnable);
-}
-
-/****************************************************************************/
-/**
-*
-* Set the Output Enable of the specified pin.
-*
-* @param InstancePtr is a pointer to the XGpioPs instance.
-* @param Pin is the pin number to which the Data is to be written.
-* Valid values are 0 to XGPIOPS_DEVICE_MAX_PIN_NUM - 1.
-* @param OpEnable specifies whether the Output Enable for the specified
-* pin should be enabled.
-* Valid values are 0 for Disabling Output Enable,
-* 1 for Enabling Output Enable.
-*
-* @return None.
-*
-* @note None.
-*
-*****************************************************************************/
-void XGpioPs_SetOutputEnablePin(XGpioPs *InstancePtr, int Pin, int OpEnable)
-{
- u8 Bank;
- u8 PinNumber;
- u32 OpEnableReg;
-
- Xil_AssertVoid(InstancePtr != NULL);
- Xil_AssertVoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
- Xil_AssertVoid(Pin < XGPIOPS_DEVICE_MAX_PIN_NUM);
- Xil_AssertVoid((OpEnable == 0) || (OpEnable == 1));
-
- /*
- * Get the Bank number and Pin number within the bank.
- */
- XGpioPs_GetBankPin(Pin, &Bank, &PinNumber);
-
- OpEnableReg = XGpioPs_ReadReg(InstancePtr->GpioConfig.BaseAddr,
- ((Bank) * XGPIOPS_REG_MASK_OFFSET) +
- XGPIOPS_OUTEN_OFFSET);
-
- if (OpEnable) { /* Enable Output Enable */
- OpEnableReg |= (1 << PinNumber);
- } else { /* Disable Output Enable */
- OpEnableReg &= ~ (1 << PinNumber);
- }
-
- XGpioPs_WriteReg(InstancePtr->GpioConfig.BaseAddr,
- ((Bank) * XGPIOPS_REG_MASK_OFFSET) +
- XGPIOPS_OUTEN_OFFSET, OpEnableReg);
-}
-/****************************************************************************/
-/**
-*
-* Get the Output Enable status of the pins of the specified GPIO Bank.
-*
-* @param InstancePtr is a pointer to the XGpioPs instance.
-* @param Bank is the bank number of the GPIO to operate on.
-* Valid values are 0 to XGPIOPS_MAX_BANKS - 1.
-*
-* return Returns a a 32 bit mask of the Output Enable register.
-* Bits with 0 are in Disabled state, bits with 1 are in
-* Enabled State.
-*
-* @note None.
-*
-*****************************************************************************/
-u32 XGpioPs_GetOutputEnable(XGpioPs *InstancePtr, u8 Bank)
-{
- Xil_AssertNonvoid(InstancePtr != NULL);
- Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
- Xil_AssertNonvoid(Bank < XGPIOPS_MAX_BANKS);
-
- return XGpioPs_ReadReg(InstancePtr->GpioConfig.BaseAddr,
- ((Bank) * XGPIOPS_REG_MASK_OFFSET) +
- XGPIOPS_OUTEN_OFFSET);
-}
-
-/****************************************************************************/
-/**
-*
-* Get the Output Enable status of the specified pin.
-*
-* @param InstancePtr is a pointer to the XGpioPs instance.
-* @param Pin is the pin number for which the Output Enable status is to
-* be retrieved.
-* Valid values are 0 to XGPIOPS_DEVICE_MAX_PIN_NUM - 1.
-*
-* @return Output Enable of the specified pin.
-* - 0 if Output Enable is disabled for this pin
-* - 1 if Output Enable is enabled for this pin
-*
-* @note None.
-*
-*****************************************************************************/
-int XGpioPs_GetOutputEnablePin(XGpioPs *InstancePtr, int Pin)
-{
- u8 Bank;
- u8 PinNumber;
-
- Xil_AssertNonvoid(InstancePtr != NULL);
- Xil_AssertNonvoid(InstancePtr->IsReady == XIL_COMPONENT_IS_READY);
- Xil_AssertNonvoid(Pin < XGPIOPS_DEVICE_MAX_PIN_NUM);
-
- /*
- * Get the Bank number and Pin number within the bank.
- */
- XGpioPs_GetBankPin(Pin, &Bank, &PinNumber);
-
- return (XGpioPs_ReadReg(InstancePtr->GpioConfig.BaseAddr,
- ((Bank) * XGPIOPS_REG_MASK_OFFSET) +
- XGPIOPS_OUTEN_OFFSET) >> PinNumber) & 1;
-}
-
-/****************************************************************************/
-/*
-*
-* Get the Bank number and the Pin number in the Bank, for the given PinNumber
-* in the GPIO device.
-*
-* @param PinNumber is the Pin number in the GPIO device.
-* @param BankNumber returns the Bank in which this GPIO pin is present.
-* Valid values are 0 to XGPIOPS_MAX_BANKS - 1.
-* @param PinNumberInBank returns the Pin Number within the Bank.
-*
-* return None;
-*
-* @note None.
-*
-*****************************************************************************/
-void XGpioPs_GetBankPin(u8 PinNumber, u8 *BankNumber, u8 *PinNumberInBank)
-{
- for (*BankNumber = 0; *BankNumber < 4; (*BankNumber)++)
- if (PinNumber <= XGpioPsPinTable[*BankNumber])
- break;
-
- if (*BankNumber == 0) {
- *PinNumberInBank = PinNumber;
- } else {
- *PinNumberInBank = PinNumber %
- (XGpioPsPinTable[*BankNumber - 1] + 1);
- }
-}
-/** @} */
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