Writing Driver for video card attached to an USB

[Alex Deucher]

On Mon, Jul 19, 2010 at 1:40 AM, PRASANNA KUMAR
<prasanna_tsm_kumar at yahoo.co.in> wrote:
> Hi,
>     I have a video card which is attached via USB hub. I want to write a
> driver for the video card. Is there any way to write user space device
> driver using LibUSB. I am new for creating video driver code. Where could i
> find tutorials for writing video driver (xorg) driver.
>

There's a userspace xorg driver for sis-based USB video cards that you
can use as a reference:
http://cgit.freedesktop.org/xorg/driver/xf86-video-sisusb/

Alex