[Linux-fbdev-devel] Re: Linux-fbdev-devel digest, Vol 1 #163 - 1 msg

[Chris W. <cw...@so...>]

> Hi,
>
> Sorry for the following stupid questions, :) I am a new comer  to the
> frame buffer devices of linux, I am supposed to write the frame buffer
> device driver for scorpion graphic chip(Motorola MC92110 ) and  first
> like to play around the frame buffer device like vfb or VESA. Could
> anybody point me some simple examples to use this kind of devices, like
> draw a line or...
>
> Thanks in advanced,
>
> Li Yi

Hello!  recently, a friend of mine and myself faced a similar challenge.
unfortunately, there was no one to answer this, so we forged ahead
blindly, and figured out what we could.  take a look at
gdr.softpixel.com/spurtg for a program that uses framebuffer (we wrote
this).  download the tarball, and take a look at gfx.c in the src dir.
basically, you open the device, call some ioctl's (outlined in linux/fb.h
i think), and thats all you need.  it helps to mmio it so it becomes a
large array.  if you need some more help, we can try to help you out.

Chris Wright