Re: [Linux-fbdev-devel] Help with finding vertical refresh strobe

[James S. <jsi...@tr...>]

> I'd like to get hard real-time frame-by-frame control of video.
> 
> I have RTLinux working and would like it to poll (in real-time) for either the
> 
> current horizontal scanline position, a horizontal refresh or a vertical
> 
> refresh.  I realize this is probably in the structure 'display' somewhere
> 
> but havent found it or references to it.  Any help would be appreciated.
> 
> Please cc a copy of replies to me as I do not subscribe to this list.

If you have a matrox card you can do this. Take a look at 
include/linux/matroxfb.h and fb.h. Their is a api for this as long as
the card supports it.