[Intel-gfx] New Samsung driver for backlight control.

[Greg KH]

On Tue, Sep 08, 2009 at 06:05:03PM +0200, Matthias Hopf wrote:
> On Aug 31, 09 10:54:29 -0700, Greg KH wrote:
> > > Is there a way to make the brightness more finer controlled using this
> > > interface?
> > Not that I know of, sorry, it looks like the hardware is only allowing
> > this to be changed in 8 levels of increments.  Windows should work this
> > same way, right?
> 
> AFAIR at one point you deliberately decided to expose only 8 levels to
> the user - while the hardware was capable of more levels (I think it was
> something about some user land tool expecting something like that).
> But I may be utterly wrong.

Yes, that was when we were blindly poking in the PCI config space.  We
aren't supposed to be doing that :)

> I'd love to have more fine grained control on my NC10 as well.

I have reports that Windows also only supports 8 levels, so that is what
this hardware controller is possible of supporting, sorry.

thanks,

greg k-h