Re: [Linux-fbdev-devel] vga256fb

[antirez <an...@in...>]

On Mon, May 14, 2001 at 06:23:20PM +0000, Petr Vandrovec wrote:
> > I downloaded the patch, it seems your 256 color driver works
> > in 360x480 only to provide a graphic console, but not with
> > other userspace software that mmap() the video memory.
> > Am I right?
> 
> It provides mmap. But application must understand FB_AUX_PLANES_CFB8
> videomode, not packed pixels.

Ok

> > I read the source code of fbtv, and it seems to perform a quite
> > usual memory mapped I/O. Unfortunatelly I can't test it, I
> > lacks a TV-card...
> 
> It then passes this address down to bttv, which converts virtual address
> back to physical and pushes data directly there.

Now it's clear! I didn't understood that the one to write directly
to the video memory was the bttv driver.

> If there is some memory somewhere it will work, as bttv supports
> non-continuous data stores due to its ability to write directly to userspace.
>                                                  Petr Vandrovec
>                                                  van...@vc...

Perfect.
Thanks for the clarification!

-- 
Salvatore Sanfilippo <an...@in...>
http://www.kyuzz.org/antirez
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