Re: [Linux-fbdev-devel] Re: fbdev, console, (video) overlay/underlay & fbtv

[Benjamin H. <be...@ke...>]

>> control the mirroring on the VGA output.
>
>Shouldn't Xinerma be handling that. If it doesn't then as usual XFree86 is
>broken. 

It's not multihead. It's just enabling either the CRT output, the LCD
output, or both. Full multihead would require some support in the
X driver. I hate duplicating functionalities. I have that simple ioctl
to aty128fb that can toggle LCD/CRT outputs, I want it to work while
in X as well. If it's not possible via the fbdev API because the
device is exclusively opened, then I'll hack another mecanism in
the kernel, probably via /proc/pmu like I do for backlight. It may
be ugly, but it works and I don't want to wait for proper support in X.

>As for multiple access issues this is a huge topic. I plan to hold off until 
>2.5.X and when I start working on the framebuffer filesystem. Here we can
>have multiple files where each on can represent a specific type of 
>functionality. With this we can control which functionality can be used
>by only one process at a time versus functionality that can be managed
>between multiple process. 

That's a different issue. 

Ben.