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SubjectRe: [PATCH] Samsung laptop driver
On Fri, Aug 21, 2009 at 04:19:52PM -0700, Jesse Barnes wrote:
> On Fri, 21 Aug 2009 15:59:25 -0700
> Greg KH <> wrote:
> > Jesse, I don't know how this is going to play with your recently added
> > backlight support for the i915 driver. As you don't have control over
> > the LEDs and other stuff that this driver is going to support, I think
> > we need some way to keep the i915 driver from messing with the
> > backlight values, don't you think?
> Right, it should be fine. The i915 driver should only take control and
> provide a backlight when:
> - no ACPI method is available
> - no platform method is available (like this one)
> - backlight is exposed through the GPU or i2c
> So I'm a lot happier now that you've figured out the proper platform
> interface. :) The test code I sent out earlier didn't work for Mike
> because his VBIOS (properly it turns out) indicated that there was an
> external agent in charge of the backlight.

Great, then all should be good, thanks for letting me know.

Now I wonder if Mike's laptop can be controlled through my new driver,
that would be an interesting test. I'll ping him about it.


greg k-h

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