On Sat 2013-06-22 18:43:01, Sebastian Reichel wrote: > On Sat, Jun 22, 2013 at 01:26:20PM +0200, Pavel Machek wrote: > > On Tue 2013-06-18 18:24:23, Gaël PORTAY wrote: > > > Currently, none of available triggers supports playing with the LED brightness > > > level. The cycle trigger provides a way to define custom brightness cycle. > > > For example, it is easy to customize the cycle to mock up the rhythm of human > > > breathing which is a nice cycle to tell the user the system is doing something. > > > > > > This trigger is meant to be usable for waiting an event to happen, for example > > > when the system gets ready. Those cycles may be used to reflect well known > > > system status (e.g. idle mode, startup...). > > > > > > This implementation provides several interfaces: > > > - to define the cycle itself: > > > * plot: definition of plot points using plot or rawplot files, > > > each points defines the brightness level > > > * interval: constant time interval between each plot point > > > - to control the cycle: > > > * repeat: the number of repetition of the whole plot cycle > > > 0 for an infinite loop > > > * control: used to control the cycle trigger > > > + "start"/"stop": to start/stop the cycle > > > + "reset" to clear the cycle counter and the internal plot point index > > > + "pause"/"resume" to pause/resume the cycle > > > > > > Signed-off-by: Gaël PORTAY <g.portay@xxxxxxxxxxx> > > > > I'd say this should go to userspace.... and maybe should handle RGB > > leds. ... like the one on n900/HTC dream/.... > > > > Actually, there's probably some daemon in maemo that already does > > this. > > Actually the n900 has hardware support for this. There's a > programmable LED driver on the board, which is called LP5523. > > So... I don't think there's a daemon in maemo ;) Uh. It seems that LP5523 should get gcc support, not kernel support. It has limited memory, but 3 cores, and seems turing complete. Not sure what is reasonable interface for that, but I guess subset that "makes sense" is enough. Pavel -- (english) http://www.livejournal.com/~pavelmachek (cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html -- To unsubscribe from this list: send the line "unsubscribe linux-doc" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
