prepare_pio
ret = prepare_pio(dev, THC_PIO_OP_I2C_SUBSYSTEM_READ, address, *size);
ret = prepare_pio(dev, THC_PIO_OP_I2C_SUBSYSTEM_WRITE, address, size);
ret = prepare_pio(dev, opcode, address, size);
ret = prepare_pio(dev, opcode, address, size);
ret = prepare_pio(dev, THC_PIO_OP_I2C_TIC_WRITE_AND_READ, address, read_size);