i2cdriver_8260.h

mpc8260 i2c driver code, it is used for i2c controllor on mpc8260.

#ifndef __I2CDRIVER_H__
#define __I2CDRIVER_H__

#ifdef __cplusplus
extern "C" {
#endif

#include "../../../../COMM_DRV/nbDrvDef.h"
#include "../../../../COMM_DRV/nbDrvCommIntf.h"


/* Local Buffer  size*/
#define BUFF_MAX_LEN   0x0100    /* Maximum length of frame (arbitrary choice) */

/* Local Buffer */
typedef UINT8 LOCAL_BUF[BUFF_MAX_LEN];  /* Account for Null Terminator */

/*define RXBD and TXBD*/
#define I2C_RXBD 0x3000
#define I2C_TXBD 0x2c00


/* txrx  Buffer num */
#define NUM_I2C_RXBDS 1
#define NUM_I2C_TXBDS 2
#define I2C_TXBD_INDX (NUM_I2C_RXBDS)

/* I2C work mode */
#define I2C_MODE_MASTER 1
#define I2C_MODE_SLAVE  0

/* i2c bdrings offset */
#define I2C_BDS_OFFSET 0x3e80




/***********************/
/* I2C ERROR  define*/
/***********************/
#define I2C_ERR_BASE 10
#define I2C_ERR_BUSY I2C_ERR_BASE-1
#define I2C_ERR_TRANS I2C_ERR_BASE-2
#define I2C_ERR_READ_BUSY I2C_ERR_BASE-3
#define I2C_ERR_READ I2C_ERR_BASE-4
#define I2C_ERR_WRITE I2C_ERR_BASE-5
#define I2C_ERR_SYS I2C_ERR_BASE-6
#define I2C_ERR_TEST I2C_ERR_BASE-7
#define I2C_ERR_PARM I2C_ERR_BASE-8



/* Buffer Descriptor Format */

typedef struct
{
    UINT16 bd_cstatus;     /* control and status */
    UINT16 bd_length;      /* transfer length */
    UINT8  *bd_addr;       /* buffer address */
}I2cBd;

/* BD ring */

typedef struct 
{
    I2cBd RxBD[NUM_I2C_RXBDS];    /* Rx BD ring */
    I2cBd TxBD[NUM_I2C_TXBDS];    /* Tx BD ring */
}I2cBdrings;



/* Internal Routines */

SYS_STATUS i2c_init(UINT8 local_addr, UINT8 oprt_mode);
SYS_STATUS i2c_read(UINT8 trgt_addr,UINT8 data_addr,UINT16 read_len,UINT8 flag,UINT8 *recv_data_ptr);
SYS_STATUS i2c_write(UINT8 trgt_addr,UINT8 data_addr,UINT16 write_len,UINT8 *send_data_ptr);
SYS_STATUS i2c_test_write_read(UINT8 trgt_addr,UINT8 data_addr,UINT8 send_data,UINT8 *recv_data_ptr);
void i2cInterruptHandler(void);




#ifdef __cplusplus
}
#endif 

#endif /*_I2CDRIVER_H*/