U32 usb_i2c_write8 (U8 addr, U8 value)
{
U32 ret_code = I2C_OK;
U8 write_data[2];
write_data[0]= addr;
write_data[1] = value;
ret_code = mt_i2c_write(USB_I2C_ID, 0xc0, write_data, 2, PATH_NORMAL);
return ret_code;
}
U32 sn65dsi8x_reg_i2c_write(U8 addr, U8 value)
{
U32 ret_code = I2C_OK;
U8 write_data[2];
write_data[0]= addr;
write_data[1] = value;
ret_code = mt_i2c_write(I2C_CH, sn65dsi8x_I2C_ADDR, write_data, 2,0); // 0:I2C_PATH_NORMAL
printf("sn65dsi8x_reg_i2c_write cmd=0x%x data=0x%x ret_code=0x%x\n",addr,value,ret_code);
return ret_code;
}
U32 sn65dsi8x_reg_i2c_read (U8 addr, U8 *dataBuffer)
{
U32 ret_code = I2C_OK;
U8 write_data = addr;
/* set register command */
ret_code = mt_i2c_write(I2C_CH, sn65dsi8x_I2C_ADDR, &write_data, 1, 0); // 0:I2C_PATH_NORMAL
if (ret_code != I2C_OK)
return ret_code;
ret_code = mt_i2c_read(I2C_CH, (sn65dsi8x_I2C_ADDR|0x1), dataBuffer, 1,0); // 0:I2C_PATH_NORMAL
return ret_code;
}
U32 usb_i2c_read8 (U8 addr, U8 *dataBuffer)
{
U32 ret_code = I2C_OK;
U8 write_data = addr;
/* set register command */
ret_code = mt_i2c_write(USB_I2C_ID, 0xc0, &write_data, 1, PATH_NORMAL);
if (ret_code != I2C_OK)
return ret_code;
ret_code = mt_i2c_read(USB_I2C_ID, 0xc0, dataBuffer, 1, PATH_NORMAL);
return ret_code;
}
U32 it6151_reg_i2c_write_byte (U8 dev_addr,U8 cmd, U8 data)
{
U8 cmdBufferLen = 1;
U8 dataBufferLen = 1;
U32 ret_code = I2C_OK;
U8 write_data[I2C_FIFO_SIZE];
int transfer_len = 0;
int i=0, cmdIndex=0, dataIndex=0;
dev_addr = dev_addr<<1; // for write
transfer_len = cmdBufferLen + dataBufferLen;
if(I2C_FIFO_SIZE < (cmdBufferLen + dataBufferLen))
{
dprintf(CRITICAL, "[it6151_i2c_write] exceed I2C FIFO length!! \n");
return 0;
}
//write_data[0] = cmd;
//write_data[1] = writeData;
while(cmdIndex < cmdBufferLen)
{
write_data[i] = cmd;
cmdIndex++;
i++;
}
while(dataIndex < dataBufferLen)
{
write_data[i] = data;
dataIndex++;
i++;
}
/* dump write_data for check */
for( i=0 ; i < transfer_len ; i++ )
{
dprintf(CRITICAL, "[it6151_i2c_write] write_data[%d]=%x\n", i, write_data[i]);
}
ret_code = mt_i2c_write(IT6151_BUSNUM, dev_addr, write_data, transfer_len,0);
return ret_code;
}
static U32 it6151_reg_i2c_read_byte (U8 dev_addr,U8 *cmdBuffer, U8 *dataBuffer)
{
U32 ret_code = I2C_OK;
dev_addr = (dev_addr<<1) | 1; // for read
ret_code = mt_i2c_write(IT6151_BUSNUM, dev_addr, cmdBuffer, 1, 0); // set register command
if (ret_code != I2C_OK)
return ret_code;
ret_code = mt_i2c_read(IT6151_BUSNUM, dev_addr, dataBuffer, 1, 0);
if (ret_code != I2C_OK)
return ret_code;
return ret_code;
}