linux-kernel - Re: [PATCH RFC] leds: Add status code trigger

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Message-ID: <1426143360.59115.21.camel@localhost>
Date:	Thu, 12 Mar 2015 07:56:00 +0100
From:	Raphaël Teysseyre <rteysseyre@...il.com>
To:	Pavel Machek <pavel@....cz>
Cc:	Joe Xue <lgxue@...mail.com>, Bryan Wu <cooloney@...il.com>,
	"rpurdie@...ys.net" <rpurdie@...ys.net>,
	Linux LED Subsystem <linux-leds@...r.kernel.org>,
	lkml <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH RFC] leds: Add status code trigger

> > 		For a heartbeat-like pattern :
> > 		0 1000
> > 		255 100
> > 		0 100
> > 		255 100
> 
> That would be "slowly go to zero intensity, quickly go to max
> intensity, to zero, to maximum". If you wanted to turn the LED on/off
> without going through partial brightnesses, you'd do
> 
> 	        0 1000
> 		255 0
> 		255 100
> 		0 0
> 		0 100
> 		255 0
> 		255 100
> 		0 0
> 
Okay, now I get why there were zero-time lines in your second example.

> > 	pattern_repeat : repeat this pattern indefinitely ?
> > 		1 -> yes, 0 -> no
> > 
> > 	pattern_once : if pattern_repeat = 0, writing 1 to this
> > 		file makes the pattern run once .
> 
> I'd do attribute "repeat" with number of repetitions, or -1 == "repeat
> forever" default value.
> 

Yes that's better.

Best regards,
Raphaël



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