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    SubjectRe: [PATCH 1/3] backlight: Allow drivers to update the core, and generate events on changes
    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.

    > 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?

    Matthew Garrett |

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