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

[Greg KH]

On Sat, Aug 29, 2009 at 10:16:54PM +0100, Mike Lothian wrote:
> 2009/8/26 Mike Lothian <mike at fireburn.co.uk>:
> > 2009/8/26 Greg KH <greg at kroah.com>:
> >> On Sat, Aug 22, 2009 at 10:27:58AM +0100, Mike Lothian wrote
> >>
> >>> Do you have any idea why my brightness buttons aren't working correctly?
> >>
> >> See the other responses, they are working "correctly" now, a 0 setting
> >> will not turn off the light, as it is not supposed to.
> >
> > What other responses?
> >
> 
> I think the problem maybe due to the intel KMS driver not exporting
> BACKLIGHT information via Xrandr ie xbacklight doesn't work
> 
> Also using the previous patch the one with 255 settings, once the
> brightness goes low enough to switch of the backlight the backlight
> refuses to come back on no matter what is value is then set

Yes, this is because poking the PCI config register is not the "proper"
way to do this for this hardware platform.

thanks,

greg k-h