Re: proper framework for meter sink?

[Pavel Machek <pavel-+ZI9xUNit7I@public.gmane.org>]

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Hi!

> I wont to use existing LED triggers by setting multiple LEDs on trigger.
> The triggers should use brightness value by different trigger intensity
> and the driver should set different amount of LEDs depending on
> brightness value.

Well... we don't really have "trigger intensities" inside the kernel.

Are you sure this is something kernel should do?

> With other words LED meter controller by kernel LED framework. It should
> be possible to configure LED arrays by Device Tree.
> Initially i was thinking about some kind of extended leds-gpio.c driver
> which will convert brightness value to LED position. But one my friend
> pointed me that metes exist in different configurations and it make no
> sense to bind it to LED framework.
> 
> Do you have any ideas, suggestions, tips? I know there are lot of user
> space based variants. On other hand kernel already have almost every
> thing what I need.


We could have triggers like "on if value is above X", and then you
could use few of them to implement a meter.

But I guess this would be better done in userspace... Why not do it there?

									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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