extern unsigned int I2CRead(unsigned char I2CSlaveAddr, unsigned char *data, unsigned char length)
{
/* I2C read, please port this function*/
// printk("I2CSlaveAddr is %d,length is %d\n",I2CSlaveAddr,length);
// printk("I2CSlaveAddr is %d\n",I2CSlaveAddr);
struct si2168_fe_config cfg;
// I2CSlaveAddr=cfg.demod_addr;
int nRetCode = 0;
struct i2c_msg msg[1];
if(data == 0 || length == 0)
{
printk("si2168 read register parameter error !!\n");
return 0;
}
si2168_get_fe_config(&cfg);
//read real data
memset(msg, 0, sizeof(msg));
msg[0].addr = I2CSlaveAddr;
msg[0].flags |= I2C_M_RD; //write I2C_M_RD=0x01
msg[0].len = length;
msg[0].buf = data;
nRetCode = i2c_transfer(cfg.i2c_adapter, msg, 1);
if(nRetCode != 1)
{
printk("si2168_readregister reg failure!\n");
return 0;
}
return 1;
}
extern unsigned int I2CWrite(unsigned char I2CSlaveAddr, unsigned char *data, unsigned char length)
{
struct si2168_fe_config cfg;
si2168_get_fe_config(&cfg);
// I2CSlaveAddr=cfg.demod_addr;
// printk("I2CSlaveAddr is %d\n",I2CSlaveAddr);
// printk("I2CSlaveAddr is %d,length is %d,data is %x\n",I2CSlaveAddr,length,data[0]);
/* I2C write, please port this function*/
int ret = 0;
// unsigned char regbuf[1]; /*8 bytes reg addr, regbuf 1 byte*/
struct i2c_msg msg; /*construct 2 msgs, 1 for reg addr, 1 for reg value, send together*/
memset(&msg, 0, sizeof(msg));
/*write reg address*/
/* msg[0].addr = (state->config.demod_addr);
msg[0].flags = 0;
msg[0].buf = regbuf;
msg[0].len = 1;*/
/*write value*/
msg.addr = I2CSlaveAddr;
msg.flags = 0; //I2C_M_NOSTART; /*i2c_transfer will emit a stop flag, so we should send 2 msg together,
// * and the second msg's flag=I2C_M_NOSTART, to get the right timing*/
msg.buf = data;
msg.len = length;
#if 0
/*write reg address*/
msg[0].addr = 0x80;
msg[0].flags = 0;
msg[0].buf = 0x7;
msg[0].len = 1;
/*write value*/
msg[1].addr = 0x80;
msg[1].flags = I2C_M_NOSTART; /*i2c_transfer will emit a stop flag, so we should send 2 msg together,
* and the second msg's flag=I2C_M_NOSTART, to get the right timing*/
msg[1].buf = 0x8;
msg[1].len = 1;
#endif
ret = i2c_transfer(cfg.i2c_adapter, &msg, 1);
if(ret<0){
printk(" %s: writereg error, errno is %d \n", __FUNCTION__, ret);
return 0;
}
else{
//printk(" %s:write success, errno is %d \n", __FUNCTION__, ret);
return 1;
}
return 1;
}