Hello!
Here's the patch I've failed to push into mainstream half of year ago,
but with one major modification that avoids the use of the
class_device_find() function that was disliked so much.
The patch must be applied after the fbdev cleanup patch series, notably
after this patch:
http://sourceforge.net/mailarchive/forum.php?thread_id=6206427&forum_id=2357
since it uses the FB_BLANK notification event.
The patch will allow further developement of drivers that allow
controlling backlight and LCD flat panels on hardware that supports it
(in particular, on PDAs).
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Greetings,
Andrew