Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756149Ab3FVL0Z (ORCPT ); Sat, 22 Jun 2013 07:26:25 -0400 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:43377 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751965Ab3FVL0W (ORCPT ); Sat, 22 Jun 2013 07:26:22 -0400 Date: Sat, 22 Jun 2013 13:26:20 +0200 From: Pavel Machek To: =?iso-8859-1?Q?Ga=EBl?= PORTAY Cc: Rob Landley , Bryan Wu , Richard Purdie , "Milo(Woogyom) Kim" , linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-leds@vger.kernel.org Subject: Re: [RFC PATCH] led: add Cycle LED trigger. Message-ID: <20130622112619.GA8075@amd.pavel.ucw.cz> References: <1371572663-10846-1-git-send-email-g.portay@overkiz.com> MIME-Version: 1.0 Content-Type: text/plain; charset=iso-8859-1 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <1371572663-10846-1-git-send-email-g.portay@overkiz.com> User-Agent: Mutt/1.5.20 (2009-06-14) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1846 Lines: 39 On Tue 2013-06-18 18:24:23, Ga?l 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: Ga?l PORTAY 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. 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-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/