Re: [PATCH] input: extend EV_LED
From: Pavel Machek
Date: Fri Feb 16 2007 - 09:05:38 EST
> > > >I do not know the LED subsystem in detail, but I do not
> > > >know
> > > >any possibility to access the i8042 from different
> > > >subsystem
> > > >than the input subsystem.
> > > >
> > > >What do you think and recommend?
> > >
> > > I think you need to use leds framework for what you are
> > > trying to do.
> > I'm actually not sure if led framework can do that. It was
> > for leds on gpios, and handles blinking itself.
> > But he could export two leds :-).
> what do you mean about two leds? The first one would be
> off/0.5Hz and the other off/1Hz?
> I read in linux/Documentation/led-class.txt the following:
> | Some leds can be programmed to flash in hardware. As this
> isn't a generic
> | LED device property, this should be exported as a device
> specific sysfs
> | attribute rather than part of the class if this
> functionality is required.
> Does it mean that neither the input subsystem nor the led
> subsystem is designed for hardware acelerated blinking leds?
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
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