source: svn/trunk/zas_dstar/devices/Tuner/S5H1411/IicComm.c @ 2

/****************************************************************************
*
*                       Copyright (c) 2001 Trident Microsystems, Inc.
*                                                       All rights reserved
*
* The content of this file or document is CONFIDENTIAL and PROPRIETARY
* to Trident Microsystems, Inc.  It is subject to the terms of a License
* Agreement between Licensee and Trident Microsystems, Inc.
* restricting among other things, the use, reproduction, distribution
* and transfer.  Each of the embodiments, including this information and
* any derivative work shall retain this copyright notice
*
* FileName: IicComm.c
*
* modification history
* Created by Alex
* Date: 2006-4-28
*******************************************************************************/
#include "dsthalcommon.h"

int S5H1409_IicTransmit(unsigned char chipAddr, unsigned char *pBuffer, int len )
{
        int n;
        
        n = DHL_SYS_I2cWrite( chipAddr, 0, 0, pBuffer, len ); 
        if (n != len)
                return -1;
        
        return 0;
}

int S5H1409_IicTransmitEx(unsigned char chipAddr, unsigned char *pBuffer, int len )
{
        int n;
#if 1
        n = DHL_SYS_I2cWrite( chipAddr, 1, pBuffer[0], &pBuffer[1], len-1 ); 
        if (n != len)
                return -1;
#else

        n = DHL_SYS_I2cWrite( chipAddr, 0, 0, pBuffer, len ); 
        if (n != len)
                return -1;
#endif
        return 0;
}

/**************************************************************************
 * Name:
 *              IicWriteOneRegister
 * Description:
 *              write data to one register 
 * Parameter:
 *              chipaddr: I2c address
 *                 regaddr:  subaddress
 *                 data: 2 bytes
 * return:
 *              the value of the regaddr
 *           0 for success,  non-zero for failure
 * Author:
 *              Alex
 ***************************************************************************/
DS_U16 S5H_IicWriteOneRegister(DS_U8 chipaddr, DS_U8 regaddr, DS_U16 data)
{
        int n;
        DS_U16 result = 0;
        DS_U8 dataBuf[2] = {0x00, 0x00};

        dataBuf[0] = (data>>8)&0xff;
        dataBuf[1] = (data)&0xff;       
                
        n = DHL_SYS_I2cWrite( chipaddr, 1, regaddr, dataBuf, 2 );
        if ( n != 2 && n != 3 ) {
                printf("|%s| ERROR, Return=%d\n", __FUNCTION__, n);
                result = 1;
        }
        
        return result;
}

 /**************************************************************************
 * Name:
 *              IicReadOneRegister
 * Description:
 *              Read one register with 2 bytes
 * Parameter:
 *              chipaddr: I2c address
 *                 regaddr:  subaddress
 * return:
 *              the value of the regaddr
 *           0 for success,  non-zero for failure
 * Author:
 *              Alex
 ***************************************************************************/
DS_U16 S5H_IicReadOneRegister(DS_U8 chipaddr, DS_U8 regaddr)
{
        DS_U8 dataBuf[2] = {0x00, 0x00};
        DS_U16 ret_val;
        int n;
        
        n = DHL_SYS_I2cRead( chipaddr, 1, regaddr, dataBuf, 2 );
        if ( n != 2 ) {
                printf("|%s| ERROR, Return=%d\n", __FUNCTION__, n);
        }
        
        ret_val = ((dataBuf[0]<<8) | dataBuf[1]);
        
        return ret_val;
}

DS_U8 S5H_IicReadTunerByte(DS_U8 TunerAddr)
{
        DS_U8 dataBuf[2] = {0x00, 0x00};
        DS_U8 ret_val;
        int n;
        
        n = DHL_SYS_I2cRead( TunerAddr, 0, 0, dataBuf, 1 );
        if ( n != 0 ) {
                printf("|%s| ERROR, Return=%d\n", __FUNCTION__, n);
        }
        
        ret_val = dataBuf[0];
        
        return ret_val;
}