linux-kernel - Re: [PATCH] leds: ledtrig-morse: send out morse code

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Message-ID: <20180628185630.GA6095@amd>
Date:   Thu, 28 Jun 2018 20:56:30 +0200
From:   Pavel Machek <pavel@....cz>
To:     Andreas Klinger <ak@...klinger.de>
Cc:     jacek.anaszewski@...il.com, ben.whitten@...il.com,
        geert+renesas@...der.be, w@....eu, pombredanne@...b.com,
        gregkh@...uxfoundation.org, linux-kernel@...r.kernel.org,
        linux-leds@...r.kernel.org
Subject: Re: [PATCH] leds: ledtrig-morse: send out morse code

Hi!

> Send out a morse code by using LEDs.
> 
> This is useful especially on embedded systems without displays to tell the
> user about error conditions and status information.
> 
> The trigger will be called "morse"
> 
> The string to be send is written into the file morse_string and sent out
> with a workqueue. Supported are letters and digits.
> 
> With the file dot_unit the minimal time unit can be adjusted in
> milliseconds.
> 
> Signed-off-by: Andreas Klinger <ak@...klinger.de>

Can we get more general "pattern" trigger? Some LEDs can do that in
hardware, and it is more general than plain morse.

Ouch and it already was implemented :-). Patch is in attachment.

									Pavel

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

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