linux-kernel - Re: [PATCH 2/2] leds: lp5024: Add the LP5024/18 RGB LED driver

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Message-ID: <20181220090612.GA21972@amd>
Date:   Thu, 20 Dec 2018 10:06:12 +0100
From:   Pavel Machek <pavel@....cz>
To:     Dan Murphy <dmurphy@...com>
Cc:     jacek.anaszewski@...il.com, linux-leds@...r.kernel.org,
        kernel list <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH 2/2] leds: lp5024: Add the LP5024/18 RGB LED driver

Hi!

> > Anyway, if your 36 channels can be set independently, I believe you
> > just want them to export as 36 LEDs.
> 
> I am not sure that is what the "customers" would want to have to set 36 different nodes or even declare those 36 nodes.
> That is 36 independent user space to kernel space calls that are very expensive just to set a LED color and brightness.
> 

No, 36 independend calls to kernel space are not that expensive.

									Pavel

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

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