Messages in this thread | | | Subject | Re: [PATCH 1/3] backlight: Allow drivers to update the core, and generate events on changes | From | Zhang Rui <> | Date | Thu, 16 Jul 2009 10:39:34 +0800 |
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On Wed, 2009-07-15 at 21:58 +0800, Matthew Garrett wrote: > On Wed, Jul 15, 2009 at 10:11:29AM +0100, Richard Purdie wrote: > > > So there are basically two values we're ever interested in at a given > > point in time. The current ambient light reading and the corresponding > > display luminance adjustment. Both of those could just be exposed as an > > input device really? > > The alternative would be hwmon, I guess.
you mean convert an ACPI ALS device to a hwmon device?
> > > Agreed, userspace should be where policy is decided. Having a standalone > > module which connected the two together with a "default" policy might be > > acceptable too though? If userspace then wants to handle things it just > > makes sure the module is not loaded. > > You want smoothing even in a default policy, and doing that well might > be a bit much for the kernel? > sorry, I don't understand. do you mean that there should be a default policy in the kernel?
thanks, rui
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