JZ4780_I2C_DC_READ
jz4780_i2c_writew(i2c, JZ4780_I2C_DC, JZ4780_I2C_DC_READ);
JZ4780_I2C_DC_READ | X1000_I2C_DC_STOP);
jz4780_i2c_writew(i2c, JZ4780_I2C_DC, JZ4780_I2C_DC_READ);
data &= ~JZ4780_I2C_DC_READ;