i2capi.h

sonata2standardsourcedriver的EEProm读写方案

#ifndef _i2capi_H
#define _i2capi_H
//============================================================================
//  File Name: i2capi.h
//
//  (c) Copyright [2002] Cirrus Logic Inc. All rights reserved
//
//  This source code is Cirrus Logic, Inc. proprietary and confidential
//  information
//
//  Description:
//      This unit provides generic functions to manipulate the I2C pins.  The
//      I/O pins are board specific and are defined in the body unit that
//      matches this header.
//
//  Modification History:
//      $Id: i2capi.h,v 1.3 2003/11/20 21:32:16 matthieu Exp $
//      $Log: i2capi.h,v $
//      Revision 1.3  2003/11/20 21:32:16  matthieu
//      Remove the //Perl skip lines...
//
//      Revision 1.2  2003/11/20 08:42:09  akipnis
//      Renamed CLASI functions and responses to follow naming conventions
//
//      Revision 1.1  2003/09/11 00:55:02  matthieu
//      Initial Sonata 2 tree
//
//      Revision 1.1.1.1  2003/06/27 03:14:12  jalves
//      initial check in
//
//      Revision 1.1.1.1  2003/06/06 20:59:06  matthieu
//      LG code
//      Initial code from sonata tree with tag  : MATT_20030606
//
//      Revision 1.2  2003/01/29 18:37:27  matthieu
//      merging branch with Y14_20030103 code (new atapi driver)
//
//      Revision 1.1.2.1  2003/01/09 01:49:34  matthieu
//      merging Y14 code up to Y14-20021115 tag
//      has got audio and stability issues
//
//      Revision 1.2  2002/11/15 22:28:29  jtodd
//      Integration  of Bug #182 and #234.
//
//      Revision 1.1.2.1  2002/11/14 13:41:16  mlese
//      Initial check in for board specific control of I2C bus.
//
//============================================================================
#include "basetype.h"		//


//-------------------------------------------------------------------------
//  Modifiers.
//-------------------------------------------------------------------------
void I2C_SetClkBit(void);
void I2C_SetDataBit(void);
void I2C_SetClkTriStateEnableBit(void);
void I2C_SetDataTriStateEnableBit(void);

void I2C_ClearClkBit(void);
void I2C_ClearDataBit(void);
void I2C_ClearClkTriStateEnableBit(void);
void I2C_ClearDataTriStateEnableBit(void);

Boolean I2C_GetClkBit(void);
Boolean I2C_GetDataBit(void);


//-------------------------------------------------------------------------
//  Mode register setup.
//-------------------------------------------------------------------------
Boolean I2C_UsesModeRegister(void);
Uint32  I2C_GetModeRegister(void);
void    I2C_ConfigurePort(Boolean bForI2C);


//-------------------------------------------------------------------------
//  Semaphore protection.
//-------------------------------------------------------------------------
// Call these to lock/unlock the bus for use.  Protection uses a
// hardware semaphore.
void I2C_ProtectionStart(void);
void I2C_ProtectionEnd(void);

#endif