[linux-fbdev] Re: Video driver bug

[Takashi Oe]

On Fri, 13 Oct 2000, Benjamin Herrenschmidt wrote:

> >That's for 2.5.0. I think the first thing we need to do in 2.5.0 is to remove
> >all `mess with non-visible VCs' support, so /dev/fb* works on the _current_
> >video mode.
>
>
> Well, my understanding is that MOL needs to be able to "probe" for all
> supported mode. Doing so on a visible console would definitely be hell.
> It does that in order to setup the MacOS-side driver mode list.

According to Samuel's last post, MOL needs both var and fix for probing.
If there is something like:

struct fb_probe_info {
	struct fb_var_screeninfo var;
	struct fb_fix_screeninfo fix;
};

int fb_probe_mode (struct fb_probe_info *pi) {
	int err;

	pi->var.activate = FB_ACTIVATE_TEST;
	if ((err = set_var(&pi->var))<0)
		return err;
	var_to_fix(&pi->var, &pi->fix);

	return 0;
}

MOL would be happy?


Takashi Oe

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