Op 25 nov 2008, om 19:46 heeft David Brownell het volgende geschreven:
On Tuesday 25 November 2008, Koen Kooi wrote:Regardless of what implementation you choose, it would be *great* ifpeople used the backlight class for things like backlights. /sys/ class/backlight/<foo>/brightness is such a nice standard that lots and lots of usespace tools rely on it.How about a standard LED driver (optionally with a brightness control) and the newish "backlight" trigger?
Does the backlight trigger hook into the backlight class? I really don't want to check all userspace code and ask upstream to add support for non backlight class methods. I did that in the 2.4 era and it's not fun. HAL takes some of the work out of it ("just write an .fdi"), but not all userspace hooks into hal. Things like seperate backlight controls for each machine are the reason if refuse to support kernel 2.4, let's not repeat such a mess in 2.6.
regards, Koen
Of course, the packaging (led driver and trigger, vs. backlight control) can be independent of the controls that are exported. - Dave
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