how to change module to character driver

Hi, all, I got a ATI HDTV module. I can use insmod to work on it. Now I want to make it a character driver in my new kernel. Then I can directly use it in kernel booting, and printk on it. How to change module to character driver? Where can I get some information about it? If someone knows

how to change module to character driver

Hi, all, I got a ATI HDTV module. I can use insmod to work on it. Now I want to make it a character driver in my new kernel. Then I can directly use it in kernel booting, and printk on it. How to change module to character driver? Where can I get some information about it? If someone knows