> > + if (screen_info.pages < 2)
> > + ywrap = ypan = 0; /* need at least two screen pages */
>
> Why do we need atleast to pages?
Picked this up from another fb driver and assumed there is some specific
reason to do so.
> Anyway, this line doesn't work.
[ ... ]
> > + if (ypan) {
> > + printk("vesafb: scrolling: ypan using protected mode interface\n");
> > + vesafb_defined.yres_virtual = video_height * screen_info.pages;
[ ... ]
> Ok, almost the same as before, in ypan, set vesafb_defined.yres_virtual to
> video_size / video_linelength, and it works better, here atleast.
It does exactly what it is supported to do. It uses the # of full screen
pages available according to the BIOS. Probably a bit less then the whole
video memory in most cases. I prefare conservative defaults...
> Something has to be done with those memcopies when we reach the end of memory. I
> think a redraw would speed up everything a lot.
It will for sure.
[ fbcon.c says: ]
> /* This cannot be used together with ypan or ywrap */
> void fbcon_redraw_bmove(struct display *p, int sy, int sx, int dy, int dx, int h, int w)
Why does'nt it work with ypan? Just not implemented yet?
Gerd
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