On Thu, Sep 13, 2012 at 11:00:18AM +0300, Tomi Valkeinen wrote: > Yes, I think the backlight and the panel should be considered separate > devices. Just like, say, a touch screen and a panel may happen to be in > the same display module, a backlight and a panel can be in the same > display module. They are still separate, independent things, although > they are, of course, used together. Still, as Alex mentioned, there may be some dependency between the panel and the backlight, so we may need to have some kind of connection. I haven't had much time to look at the panel subsystem, but perhaps it should provide for this. I obviously don't know every panel and backlight combination out there, but isn't the dependency more of a usability nature. What I mean is that the panel will work even if you switch the backlight on immediately, just that the panel might take some time to properly display data and therefore the backlight should remain powered off so the user doesn't see garbage. Or are there really any functional dependencies? Thierry
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