TTy driver how to use underlying serial port
 

I am building a new tty driver. have completed the few preliminary things required like registertation etc and am also able to receive data from user space. Now how do i send the data using the termios settings I am have made in the driver. Have tried registering struct serial_struct and then using outb to send the data but it then sends with the default of termios settings. what is the way out.