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+/**
+ * @file IxI2cDrv.h
+ *
+ * @brief Header file for the IXP400 I2C Driver (IxI2cDrv)
+ *
+ * @version $Revision: 0.1 $
+ *
+ * @par
+ * IXP400 SW Release version 2.0
+ *
+ * -- Copyright Notice --
+ *
+ * @par
+ * Copyright 2001-2005, Intel Corporation.
+ * All rights reserved.
+ *
+ * @par
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in the
+ * documentation and/or other materials provided with the distribution.
+ * 3. Neither the name of the Intel Corporation nor the names of its contributors
+ * may be used to endorse or promote products derived from this software
+ * without specific prior written permission.
+ *
+ * @par
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS ``AS IS''
+ * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE
+ * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
+ * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
+ * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
+ * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
+ * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
+ * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
+ * SUCH DAMAGE.
+ *
+ * @par
+ * -- End of Copyright Notice --
+ */
+
+/**
+ * @defgroup IxI2cDrv IXP400 I2C Driver(IxI2cDrv) API
+ *
+ * @brief IXP400 I2C Driver Public API
+ *
+ * @{
+ */
+#ifndef IXI2CDRV_H
+#define IXI2CDRV_H
+
+#ifdef __ixp46X
+#include "IxOsal.h"
+
+/*
+ * Section for #define
+ */
+
+/**
+ * @ingroup IxI2cDrv
+ * @brief The interval of micro/mili seconds the IXP will wait before it polls for
+ * status from the ixI2cIntrXferStatus; Every 20us is 1 byte @
+ * 400Kbps and 4 bytes @ 100Kbps. This is dependent on delay type selected
+ * through the API ixI2cDrvDelayTypeSelect.
+ */
+#define IX_I2C_US_POLL_FOR_XFER_STATUS 20
+
+/**
+ * @ingroup IxI2cDrv
+ * @brief The number of tries that will be attempted to call a callback
+ * function if the callback does not or is unable to resolve the
+ * issue it is called to resolve
+ */
+#define IX_I2C_NUM_OF_TRIES_TO_CALL_CALLBACK_FUNC 10
+
+
+/**
+ * @ingroup IxI2cDrv
+ * @brief Number of tries slave will poll the IDBR Rx full bit before it
+ * gives up
+ */
+#define IX_I2C_NUM_TO_POLL_IDBR_RX_FULL 0x100
+
+/**
+ * @ingroup IxI2cDrv
+ * @brief Number of tries slave will poll the IDBR Tx empty bit before it
+ * gives up
+ */
+#define IX_I2C_NUM_TO_POLL_IDBR_TX_EMPTY 0x100
+
+/*
+ * Section for enum
+ */
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @enum IxI2cMasterStatus
+ *
+ * @brief The master status - transfer complete, bus error or arbitration loss
+ */
+typedef enum
+{
+ IX_I2C_MASTER_XFER_COMPLETE = IX_SUCCESS,
+ IX_I2C_MASTER_XFER_BUS_ERROR,
+ IX_I2C_MASTER_XFER_ARB_LOSS
+} IxI2cMasterStatus;
+
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @enum IX_I2C_STATUS
+ *
+ * @brief The status that can be returned in a I2C driver initialization
+ */
+typedef enum
+{
+ IX_I2C_SUCCESS = IX_SUCCESS, /**< Success status */
+ IX_I2C_FAIL, /**< Fail status */
+ IX_I2C_NOT_SUPPORTED, /**< hardware does not have dedicated I2C hardware */
+ IX_I2C_NULL_POINTER, /**< parameter passed in is NULL */
+ IX_I2C_INVALID_SPEED_MODE_ENUM_VALUE, /**< speed mode selected is invalid */
+ IX_I2C_INVALID_FLOW_MODE_ENUM_VALUE, /**< flow mode selected is invalid */
+ IX_I2C_SLAVE_ADDR_CB_MISSING, /**< slave callback is NULL */
+ IX_I2C_GEN_CALL_CB_MISSING, /**< general callback is NULL */
+ IX_I2C_INVALID_SLAVE_ADDR, /**< invalid slave address specified */
+ IX_I2C_INT_BIND_FAIL, /**< interrupt bind fail */
+ IX_I2C_INT_UNBIND_FAIL, /**< interrupt unbind fail */
+ IX_I2C_NOT_INIT, /**< I2C is not initialized yet */
+ IX_I2C_MASTER_BUS_BUSY, /**< master detected a I2C bus busy */
+ IX_I2C_MASTER_ARB_LOSS, /**< master experienced arbitration loss */
+ IX_I2C_MASTER_XFER_ERROR, /**< master experienced a transfer error */
+ IX_I2C_MASTER_BUS_ERROR, /**< master detected a I2C bus error */
+ IX_I2C_MASTER_NO_BUFFER, /**< no buffer provided for master transfer */
+ IX_I2C_MASTER_INVALID_XFER_MODE, /**< xfer mode selected is invalid */
+ IX_I2C_SLAVE_ADDR_NOT_DETECTED, /**< polled slave addr not detected */
+ IX_I2C_GEN_CALL_ADDR_DETECTED, /**< polling detected general call */
+ IX_I2C_SLAVE_READ_DETECTED, /**< polling detected slave read request */
+ IX_I2C_SLAVE_WRITE_DETECTED, /**< polling detected slave write request */
+ IX_I2C_SLAVE_NO_BUFFER, /**< no buffer provided for slave transfers */
+ IX_I2C_DATA_SIZE_ZERO, /**< data size transfer is zero - invalid */
+ IX_I2C_SLAVE_WRITE_BUFFER_EMPTY, /**< slave buffer is used till empty */
+ IX_I2C_SLAVE_WRITE_ERROR, /**< slave write experienced an error */
+ IX_I2C_SLAVE_OR_GEN_READ_BUFFER_FULL, /**< slave buffer is filled up */
+ IX_I2C_SLAVE_OR_GEN_READ_ERROR /**< slave read experienced an error */
+} IX_I2C_STATUS;
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @enum IxI2cSpeedMode
+ *
+ * @brief Type of speed modes supported by the I2C hardware.
+ */
+typedef enum
+{
+ IX_I2C_NORMAL_MODE = 0x0,
+ IX_I2C_FAST_MODE
+} IxI2cSpeedMode;
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @enum IxI2cXferMode
+ *
+ * @brief Used for indicating it is a repeated start or normal transfer
+ */
+typedef enum
+{
+ IX_I2C_NORMAL = 0x0,
+ IX_I2C_REPEATED_START
+} IxI2cXferMode;
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @enum IxI2cFlowMode
+ *
+ * @brief Used for indicating it is a poll or interrupt mode
+ */
+typedef enum
+{
+ IX_I2C_POLL_MODE = 0x0,
+ IX_I2C_INTERRUPT_MODE
+} IxI2cFlowMode;
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @enum IxI2cDelayMode
+ *
+ * @brief Used for selecting looping delay or OS scheduler delay
+ */
+typedef enum
+{
+ IX_I2C_LOOP_DELAY = 1, /**< delay in microseconds */
+ IX_I2C_SCHED_DELAY /**< delay in miliseconds */
+} IxI2cDelayMode;
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @brief The pointer to the function that will be called when the master
+ * has completed its receive. The parameter that is passed will
+ * provide the status of the read (success, arb loss, or bus
+ * error), the transfer mode (normal or repeated start, the
+ * buffer pointer and number of bytes transferred.
+ */
+typedef void (*IxI2cMasterReadCallbackP)(IxI2cMasterStatus, IxI2cXferMode, char*, UINT32);
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @brief The pointer to the function that will be called when the master
+ * has completed its transmit. The parameter that is passed will
+ * provide the status of the write (success, arb loss, or buss
+ * error), the transfer mode (normal or repeated start), the
+ * buffer pointer and number of bytes transferred.
+ */
+typedef void (*IxI2cMasterWriteCallbackP)(IxI2cMasterStatus, IxI2cXferMode, char*, UINT32);
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @brief The pointer to the function that will be called when a slave
+ * address detected in interrupt mode for a read. The parameters
+ * that is passed will provide the read status, buffer pointer,
+ * buffer size, and the bytes received. When a start of a read
+ * is initiated there will be no buffer allocated and this callback
+ * will be called to request for a buffer. While receiving, if the
+ * buffer gets filled, this callback will be called to request for
+ * a new buffer while sending the filled buffer's pointer and size,
+ * and data size received. When the receive is complete, this
+ * callback will be called to process the data and free the memory
+ * by passing the buffer's pointer and size, and data size received.
+ */
+typedef void (*IxI2cSlaveReadCallbackP)(IX_I2C_STATUS, char*, UINT32, UINT32);
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @brief The pointer to the function that will be called when a slave
+ * address detected in interrupt mode for a write. The parameters
+ * that is passed will provide the write status, buffer pointer,
+ * buffer size, and the bytes received. When a start of a write is
+ * initiated there will be no buffer allocated and this callback
+ * will be called to request for a buffer and to fill it with data.
+ * While transmitting, if the data in the buffer empties, this
+ * callback will be called to request for more data to be filled in
+ * the same or new buffer. When the transmit is complete, this
+ * callback will be called to free the memory or other actions to
+ * be taken.
+ */
+typedef void (*IxI2cSlaveWriteCallbackP)(IX_I2C_STATUS, char*, UINT32, UINT32);
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @brief The pointer to the function that will be called when a general
+ * call detected in interrupt mode for a read. The parameters that
+ * is passed will provide the read status, buffer pointer, buffer
+ * size, and the bytes received. When a start of a read is
+ * initiated there will be no buffer allocated and this callback
+ * will be called to request for a buffer. While receiving, if the
+ * buffer gets filled, this callback will be called to request for
+ * a new buffer while sending the filled buffer's pointer and size,
+ * and data size received. When the receive is complete, this
+ * callback will be called to process the data and free the memory
+ * by passing the buffer's pointer and size, and data size received.
+ */
+typedef void (*IxI2cGenCallCallbackP)(IX_I2C_STATUS, char*, UINT32, UINT32);
+
+/*
+ * Section for struct
+ */
+
+/**
+ * @brief contains all the variables required to initialize the I2C unit
+ *
+ * Structure to be filled and used for calling initialization
+ */
+typedef struct
+{
+ IxI2cSpeedMode I2cSpeedSelect; /**<Select either normal (100kbps)
+ or fast mode (400kbps)*/
+ IxI2cFlowMode I2cFlowSelect; /**<Select interrupt or poll mode*/
+ IxI2cMasterReadCallbackP MasterReadCBP;
+ /**<The master read callback pointer */
+ IxI2cMasterWriteCallbackP MasterWriteCBP;
+ /**<The master write callback pointer */
+ IxI2cSlaveReadCallbackP SlaveReadCBP;
+ /**<The slave read callback pointer */
+ IxI2cSlaveWriteCallbackP SlaveWriteCBP;
+ /**<The slave write callback pointer */
+ IxI2cGenCallCallbackP GenCallCBP;
+ /**<The general call callback pointer */
+ BOOL I2cGenCallResponseEnable; /**<Enable/disable the unit to
+ respond to generall calls.*/
+ BOOL I2cSlaveAddrResponseEnable;/**<Enable/disable the unit to
+ respond to the slave address set in
+ ISAR*/
+ BOOL SCLEnable; /**<Enable/disable the unit from
+ driving the SCL line during master
+ mode operation*/
+ UINT8 I2cHWAddr; /**<The address the unit will
+ response to as a slave device*/
+} IxI2cInitVars;
+
+/**
+ * @brief contains results of counters and their overflow
+ *
+ * Structure contains all values of counters and associated overflows.
+ */
+typedef struct
+{
+ UINT32 ixI2cMasterXmitCounter; /**<Total bytes transmitted as
+ master.*/
+ UINT32 ixI2cMasterFailedXmitCounter; /**<Total bytes failed for
+ transmission as master.*/
+ UINT32 ixI2cMasterRcvCounter; /**<Total bytes received as
+ master.*/
+ UINT32 ixI2cMasterFailedRcvCounter; /**<Total bytes failed for
+ receival as master.*/
+ UINT32 ixI2cSlaveXmitCounter; /**<Total bytes transmitted as
+ slave.*/
+ UINT32 ixI2cSlaveFailedXmitCounter; /**<Total bytes failed for
+ transmission as slave.*/
+ UINT32 ixI2cSlaveRcvCounter; /**<Total bytes received as
+ slave.*/
+ UINT32 ixI2cSlaveFailedRcvCounter; /**<Total bytes failed for
+ receival as slave.*/
+ UINT32 ixI2cGenAddrCallSucceedCounter; /**<Total bytes successfully
+ transmitted for general address.*/
+ UINT32 ixI2cGenAddrCallFailedCounter; /**<Total bytes failed transmission
+ for general address.*/
+ UINT32 ixI2cArbLossCounter; /**<Total instances of arbitration
+ loss has occured.*/
+} IxI2cStatsCounters;
+
+
+/*
+ * Section for prototypes interface functions
+ */
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @fn ixI2cDrvInit(
+ IxI2cInitVars *InitVarsSelected)
+ *
+ * @brief Initializes the I2C Driver.
+ *
+ * @param "IxI2cInitVars [in] *InitVarsSelected" - struct containing required
+ * variables for initialization
+ *
+ * Global Data :
+ * - None.
+ *
+ * This API will check if the hardware supports this I2C driver and the validity
+ * of the parameters passed in. It will continue to process the parameters
+ * passed in by setting the speed of the I2C unit (100kbps or 400kbps), setting
+ * the flow to either interrupt or poll mode, setting the address of the I2C unit,
+ * enabling/disabling the respond to General Calls, enabling/disabling the respond
+ * to Slave Address and SCL line driving. If it is interrupt mode, then it will
+ * register the callback routines for master, slavetransfer and general call receive.
+ *
+ * @return
+ * - IX_I2C_SUCCESS - Successfully initialize and enable the I2C
+ * hardware.
+ * - IX_I2C_NOT_SUPPORTED - The hardware does not support or have a
+ * dedicated I2C unit to support this driver
+ * - IX_I2C_NULL_POINTER - The parameter passed in is a NULL pointed
+ * - IX_I2C_INVALID_SPEED_MODE_ENUM_VALUE - The speed mode selected in the
+ * InitVarsSelected is invalid
+ * - IX_I2C_INVALID_FLOW_MODE_ENUM_VALUE - The flow mode selected in the
+ * InitVarsSelected is invalid
+ * - IX_I2C_INVALID_SLAVE_ADDR - The address 0x0 is reserved for
+ * general call.
+ * - IX_I2C_SLAVE_ADDR_CB_MISSING - interrupt mode is selected but
+ * slave address callback pointer is NULL
+ * - IX_I2C_GEN_CALL_CB_MISSING - interrupt mode is selected but
+ * general call callback pointer is NULL
+ * - IX_I2C_INT_BIND_FAIL - The ISR for the I2C failed to bind
+ * - IX_I2C_INT_UNBIND_FAIL - The ISR for the I2C failed to unbind
+ *
+ * @li Reentrant : yes
+ * @li ISR Callable : yes
+ *
+ */
+PUBLIC IX_I2C_STATUS
+ixI2cDrvInit(IxI2cInitVars *InitVarsSelected);
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @fn ixI2cDrvUninit(
+ void)
+ *
+ * @brief Disables the I2C hardware
+ *
+ * @param - None
+ *
+ * Global Data :
+ * - None.
+ *
+ * This API will disable the I2C hardware, unbind interrupt, and unmap memory.
+ *
+ * @return
+ * - IX_I2C_SUCCESS - successfully un-initialized I2C
+ * - IX_I2C_INT_UNBIND_FAIL - failed to unbind the I2C interrupt
+ * - IX_I2C_NOT_INIT - I2C not init yet.
+ *
+ * @li Reentrant : yes
+ * @li ISR Callable : yes
+ *
+ */
+PUBLIC IX_I2C_STATUS
+ixI2cDrvUninit(void);
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @fn ixI2cDrvSlaveAddrSet(
+ UINT8 SlaveAddrSet)
+ *
+ * @brief Sets the I2C Slave Address
+ *
+ * @param "UINT8 [in] SlaveAddrSet" - Slave Address to be inserted into ISAR
+ *
+ * Global Data :
+ * - None.
+ *
+ * This API will insert the SlaveAddrSet into the ISAR.
+ *
+ * @return
+ * - IX_I2C_SUCCESS - successfuly set the slave addr
+ * - IX_I2C_INVALID_SLAVE_ADDR - invalid slave address (zero) specified
+ * - IX_I2C_NOT_INIT - I2C not init yet.
+ *
+ * @li Reentrant : yes
+ * @li ISR Callable : yes
+ *
+ */
+PUBLIC IX_I2C_STATUS
+ixI2cDrvSlaveAddrSet(UINT8 SlaveAddrSet);
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @fn ixI2cDrvBusScan(
+ void)
+ *
+ * @brief scans the I2C bus for slave devices
+ *
+ * @param - None
+ *
+ * Global Data :
+ * - None.
+ *
+ * This API will prompt all slave addresses for a reply except its own
+ *
+ * @return
+ * - IX_I2C_SUCCESS - found at least one slave device
+ * - IX_I2C_FAIL - Fail to find even one slave device
+ * - IX_I2C_BUS_BUSY - The I2C bus is busy (held by another I2C master)
+ * - IX_I2C_ARB_LOSS - The I2C bus was loss to another I2C master
+ * - IX_I2C_NOT_INIT - I2C not init yet.
+ *
+ * @li Reentrant : yes
+ * @li ISR Callable : yes
+ *
+ */
+PUBLIC IX_I2C_STATUS
+ixI2cDrvBusScan(void);
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @fn ixI2cDrvWriteTransfer(
+ UINT8 SlaveAddr,
+ char *bufP,
+ UINT32 dataSize,
+ IxI2cXferMode XferModeSelect)
+ *
+ * @param "UINT8 [in] SlaveAddr" - The slave address to request data from.
+ * @param "char [in] *bufP" - The pointer to the data to be transmitted.
+ * @param "UINT32 [in] dataSize" - The number of bytes requested.
+ * @param "IxI2cXferMode [in] XferModeSelect" - the transfer mode selected,
+ * either repeated start (ends w/o stop) or normal (start and stop)
+ *
+ * Global Data :
+ * - None.
+ *
+ * This API will try to obtain master control of the I2C bus and transmit the
+ * number of bytes, specified by dataSize, to the user specified slave
+ * address from the buffer pointer. It will use either interrupt or poll mode
+ * depending on the method selected.
+ *
+ * If in interrupt mode and IxI2cMasterWriteCallbackP is not NULL, the driver
+ * will initiate the transfer and return immediately. The function pointed to
+ * by IxI2cMasterWriteCallbackP will be called in the interrupt service
+ * handlers when the operation is complete.
+ *
+ * If in interrupt mode and IxI2cMasterWriteCallbackP is NULL, then the driver
+ * will wait for the operation to complete, and then return.
+ *
+ * And if the repeated start transfer mode is selected, then it will not send a
+ * stop signal at the end of all the transfers.
+ * *NOTE*: If repeated start transfer mode is selected, it has to end with a
+ * normal mode transfer mode else the bus will continue to be held
+ * by the IXP.
+ *
+ * @return
+ * - IX_I2C_SUCCESS - Successfuuly wrote data to slave.
+ * - IX_I2C_MASTER_BUS_BUSY - The I2C bus is busy (held by another I2C master)
+ * - IX_I2C_MASTER_ARB_LOSS - The I2C bus was loss to another I2C master
+ * - IX_I2C_MASTER_XFER_ERROR - There was a transfer error
+ * - IX_I2C_MASTER_BUS_ERROR - There was a bus error during transfer
+ * - IX_I2C_MASTER_NO_BUFFER - buffer pointer is NULL
+ * - IX_I2C_MASTER_INVALID_XFER_MODE - Xfer mode selected is invalid
+ * - IX_I2C_DATA_SIZE_ZERO - dataSize passed in is zero, which is invalid
+ * - IX_I2C_NOT_INIT - I2C not init yet.
+ *
+ * @li Reentrant : no
+ * @li ISR Callable : no
+ *
+ */
+PUBLIC IX_I2C_STATUS
+ixI2cDrvWriteTransfer(
+ UINT8 SlaveAddr,
+ char *bufP,
+ UINT32 dataSize,
+ IxI2cXferMode XferModeSelect);
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @fn ixI2cDrvReadTransfer(
+ UINT8 SlaveAddr,
+ char *bufP,
+ UINT32 dataSize,
+ IxI2cXferMode XferModeSelect)
+ *
+ * @brief Initiates a transfer to receive bytes of data from a slave
+ * device through the I2C bus.
+ *
+ * @param "UINT8 [in] SlaveAddr" - The slave address to request data from.
+ * @param "char [out] *bufP" - The pointer to the buffer to store the
+ * requested data.
+ * @param "UINT32 [in] dataSize" - The number of bytes requested.
+ * @param "IxI2cXferMode [in] XferModeSelect" - the transfer mode selected,
+ * either repeated start (ends w/o stop) or normal (start and stop)
+ *
+ * Global Data :
+ * - None.
+ *
+ * This API will try to obtain master control of the I2C bus and receive the
+ * number of bytes, specified by dataSize, from the user specified address
+ * into the receive buffer. It will use either interrupt or poll mode depending
+ * on the mode selected.
+ *
+ * If in interrupt mode and IxI2cMasterReadCallbackP is not NULL, the driver
+ * will initiate the transfer and return immediately. The function pointed to
+ * by IxI2cMasterReadCallbackP will be called in the interrupt service
+ * handlers when the operation is complete.
+ *
+ * If in interrupt mode and IxI2cMasterReadCallbackP is NULL, then the driver will
+ * wait for the operation to complete, and then return.
+ *
+ * And if the repeated start transfer mode is selected, then it will not send a
+ * stop signal at the end of all the transfers.
+ * *NOTE*: If repeated start transfer mode is selected, it has to end with a
+ * normal mode transfer mode else the bus will continue to be held
+ * by the IXP.
+ *
+ * @return
+ * - IX_I2C_SUCCESS - Successfuuly read slave data
+ * - IX_I2C_MASTER_BUS_BUSY - The I2C bus is busy (held by another I2C master)
+ * - IX_I2C_MASTER_ARB_LOSS - The I2C bus was loss to another I2C master
+ * - IX_I2C_MASTER_XFER_ERROR - There was a bus error during transfer
+ * - IX_I2C_MASTER_BUS_ERROR - There was a bus error during transfer
+ * - IX_I2C_MASTER_NO_BUFFER - buffer pointer is NULL
+ * - IX_I2C_MASTER_INVALID_XFER_MODE - Xfer mode selected is invalid
+ * - IX_I2C_INVALID_SLAVE_ADDR - invalid slave address (zero) specified
+ * - IX_I2C_DATA_SIZE_ZERO - dataSize passed in is zero, which is invalid
+ * - IX_I2C_NOT_INIT - I2C not init yet.
+ *
+ * @li Reentrant : no
+ * @li ISR Callable : no
+ *
+ */
+PUBLIC IX_I2C_STATUS
+ixI2cDrvReadTransfer(
+ UINT8 SlaveAddr,
+ char *bufP,
+ UINT32 dataSize,
+ IxI2cXferMode XferModeSelect);
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @fn ixI2cDrvSlaveAddrAndGenCallDetectedCheck(
+ void)
+ *
+ * @brief Checks the I2C Status Register to determine if a slave address is
+ * detected
+ *
+ * @param - None
+ *
+ * Global Data :
+ * - None.
+ *
+ * This API is used in polled mode to determine if the I2C unit is requested
+ * for a slave or general call transfer. If it is requested for a slave
+ * transfer then it will determine if it is a general call (read only), read,
+ * or write transfer requested.
+ *
+ * @return
+ * - IX_I2C_SLAVE_ADDR_NOT_DETECTED - The I2C unit is not requested for slave
+ * transfer
+ * - IX_I2C_GEN_CALL_ADDR_DETECTED - The I2C unit is not requested for slave
+ * transfer but for general call
+ * - IX_I2C_SLAVE_READ_DETECTED - The I2C unit is requested for a read
+ * - IX_I2C_SLAVE_WRITE_DETECTED - The I2C unit is requested for a write
+ * - IX_I2C_NOT_INIT - I2C not init yet.
+ *
+ * @li Reentrant : no
+ * @li ISR Callable : no
+ *
+ */
+PUBLIC IX_I2C_STATUS
+ixI2cDrvSlaveAddrAndGenCallDetectedCheck(void);
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @fn ixI2cDrvSlaveOrGenDataReceive(
+ char *bufP,
+ UINT32 bufSize,
+ UINT32 *dataSizeRcvd)
+ *
+ * @brief Performs the slave receive or general call receive data transfer
+ *
+ * @param "char [in] *bufP" - the pointer to the buffer to store data
+ * "UINT32 [in] bufSize" - the buffer size allocated
+ * "UINT32 [in] *dataSizeRcvd" - the length of data received in bytes
+ *
+ * Global Data :
+ * - None.
+ *
+ * This API is only used in polled mode to perform the slave read or general call
+ * receive data. It will continuously store the data received into bufP until
+ * complete or until bufP is full in which it will return
+ * IX_I2C_SLAVE_OR_GEN_READ_BUFFER_FULL. If in interrupt mode, the callback will be
+ * used.
+ *
+ * @return
+ * - IX_I2C_SUCCESS - The I2C driver transferred the data successfully.
+ * - IX_I2C_SLAVE_OR_GEN_READ_BUFFER_FULL - The I2C driver has ran out of
+ * space to store the received data.
+ * - IX_I2C_SLAVE_OR_GEN_READ_ERROR - The I2C driver didn't manage to
+ * detect the IDBR Rx Full bit
+ * - IX_I2C_DATA_SIZE_ZERO - bufSize passed in is zero, which is invalid
+ * - IX_I2C_SLAVE_NO_BUFFER - buffer pointer is NULL
+ * - IX_I2C_NULL_POINTER - dataSizeRcvd is NULL
+ * - IX_I2C_NOT_INIT - I2C not init yet.
+ *
+ * @li Reentrant : no
+ * @li ISR Callable : no
+ *
+ */
+PUBLIC IX_I2C_STATUS
+ixI2cDrvSlaveOrGenDataReceive(
+ char *bufP,
+ UINT32 bufSize,
+ UINT32 *dataSizeRcvd);
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @fn ixI2cDrvSlaveDataTransmit(
+ char *bufP,
+ UINT32 dataSize,
+ UINT32 *dataSizeXmtd)
+ *
+ * @brief Performs the slave write data transfer
+ *
+ * @param "char [in] *bufP" - the pointer to the buffer for data to be
+ * transmitted
+ * "UINT32 [in] bufSize" - the buffer size allocated
+ * "UINT32 [in] *dataSizeRcvd" - the length of data trasnmitted in
+ * bytes
+ *
+ * Global Data :
+ * - None.
+ *
+ * This API is only used in polled mode to perform the slave transmit data. It
+ * will continuously transmit the data from bufP until complete or until bufP
+ * is empty in which it will return IX_I2C_SLAVE_WRITE_BUFFER_EMPTY. If in
+ * interrupt mode, the callback will be used.
+ *
+ * @return
+ * - IX_I2C_SUCCESS - The I2C driver transferred the data successfully.
+ * - IX_I2C_SLAVE_WRITE_BUFFER_EMPTY - The I2C driver needs more data to
+ * transmit.
+ * - IX_I2C_SLAVE_WRITE_ERROR -The I2C driver didn't manage to detect the
+ * IDBR Tx empty bit or the slave stop bit.
+ * - IX_I2C_DATA_SIZE_ZERO - dataSize passed in is zero, which is invalid
+ * - IX_I2C_SLAVE_NO_BUFFER - buffer pointer is NULL
+ * - IX_I2C_NULL_POINTER - dataSizeXmtd is NULL
+ * - IX_I2C_NOT_INIT - I2C not init yet.
+ *
+ * @li Reentrant : no
+ * @li ISR Callable : no
+ *
+ */
+PUBLIC IX_I2C_STATUS
+ixI2cDrvSlaveDataTransmit(
+ char *bufP,
+ UINT32 dataSize,
+ UINT32 *dataSizeXmtd);
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @fn ixI2cDrvSlaveOrGenCallBufReplenish(
+ char *bufP,
+ UINT32 bufSize)
+ *
+ * @brief Replenishes the buffer which stores buffer info for both slave and
+ * general call
+ *
+ * @param "char [in] *bufP" - pointer to the buffer allocated
+ * "UINT32 [in] bufSize" - size of the buffer
+ *
+ * Global Data :
+ * - None.
+ *
+ * This API is only used in interrupt mode for replenishing the same buffer
+ * that is used by both slave and generall call by updating the buffer info
+ * with new info and clearing previous offsets set by previous transfers.
+ *
+ * @return
+ * - None
+ *
+ * @li Reentrant : no
+ * @li ISR Callable : no
+ *
+ */
+PUBLIC void
+ixI2cDrvSlaveOrGenCallBufReplenish(
+ char *bufP,
+ UINT32 bufSize);
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @fn ixI2cDrvStatsGet(IxI2cStatsCounters *I2cStats)
+ *
+ * @brief Returns the I2C Statistics through the pointer passed in
+ *
+ * @param - "IxI2cStatsCounters [out] *I2cStats" - I2C statistics counter will
+ * be read and written to the location pointed by this pointer.
+ *
+ * Global Data :
+ * - None.
+ *
+ * This API will return the statistics counters of the I2C driver.
+ *
+ * @return
+ * - IX_I2C_NULL_POINTER - pointer passed in is NULL
+ * - IX_I2C_SUCCESS - successfully obtained I2C statistics
+ *
+ * @li Reentrant : yes
+ * @li ISR Callable : no
+ *
+ */
+PUBLIC IX_I2C_STATUS
+ixI2cDrvStatsGet(IxI2cStatsCounters *I2cStats);
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @fn ixI2cDrvStatsReset(void)
+ *
+ * @brief Reset I2C statistics counters.
+ *
+ * @param - None
+ *
+ * Global Data :
+ * - None.
+ *
+ * This API will reset the statistics counters of the I2C driver.
+ *
+ * @return
+ * - None
+ *
+ * @li Reentrant : yes
+ * @li ISR Callable : no
+ *
+ */
+PUBLIC void
+ixI2cDrvStatsReset(void);
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @fn ixI2cDrvShow(void)
+ *
+ * @brief Displays the I2C status register and the statistics counter.
+ *
+ * @param - None
+ *
+ * Global Data :
+ * - None.
+ *
+ * This API will display the I2C Status register and is useful if any error
+ * occurs. It displays the detection of bus error, slave address, general call,
+ * address, IDBR receive full, IDBR transmit empty, arbitration loss, slave
+ * STOP signal, I2C bus busy, unit busy, ack/nack, and read/write mode. It will
+ * also call the ixI2cDrvGetStats and then display the statistics counter.
+ *
+ * @return
+ * - IX_I2C_SUCCESS - successfully displayed statistics and status register
+ * - IX_I2C_NOT_INIT - I2C not init yet.
+ *
+ * @li Reentrant : yes
+ * @li ISR Callable : no
+ *
+ */
+PUBLIC IX_I2C_STATUS
+ixI2cDrvShow(void);
+
+/**
+ * @ingroup IxI2cDrv
+ *
+ * @fn ixI2cDrvDelayTypeSelect (IxI2cDelayMode delayMechanismSelect)
+ *
+ * @brief Sets the delay type of either looping delay or OS scheduler delay
+ * according to the argument provided.
+ *
+ * @param - "IxI2cDelayMode [in] delayTypeSelect" - the I2C delay type selected
+ *
+ * Global Data :
+ * - None.
+ *
+ * This API will set the delay type used by the I2C Driver to either looping
+ * delay or OS scheduler delay.
+ *
+ * @return
+ * - None
+ *
+ * @li Reentrant : yes
+ * @li ISR Callable : no
+ *
+ */
+PUBLIC void
+ixI2cDrvDelayTypeSelect (IxI2cDelayMode delayTypeSelect);
+
+#endif /* __ixp46X */
+#endif /* IXI2CDRV_H */