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

[Matthias Hopf]

On Sep 08, 09 09:31:24 -0700, Greg KH wrote:
> > 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.

Hm. This is contradicting. On the one hand the hardware is capable of
more levels. On the other it isn't *reporting* more levels.

I wouldn't rely on anything what Windows supports. There can be
arbitrary limitations in the driver.

Matthias

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