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Date:   Sat, 4 Jul 2020 14:17:37 +0200
From:   Ondřej Jirman <>
To:     Pavel Machek <>
        Jacek Anaszewski <>,
        Dan Murphy <>,
        "open list:LED SUBSYSTEM" <>
Subject: Re: [PATCH RFC] leds: Add support for per-LED device triggers


On Sat, Jul 04, 2020 at 02:04:59PM +0200, Pavel Machek wrote:
> Hi!
> > Add support for registering per-LED device trigger.
> > 
> > Names of private triggers need to be globally unique, but may clash
> > with other private triggers. This is enforced during trigger
> Globally unique name is going to be a problem, no? If you have two
> keyboards with automatical backlight support...

Only globally unique in a sense that they must not clash with non
per-LED trigger names. So you can have two keyboards with 'self-working'
trigger on their LED devices in sysfs.

This requirement only comes from the fact that this shares the
same sysfs configuration interface as regular non-private triggers.


> Otherwise... yes, we need something like this.
> Best regards,
> 								Pavel
> -- 
> DENX Software Engineering GmbH,      Managing Director: Wolfgang Denk
> HRB 165235 Munich, Office: Kirchenstr.5, D-82194 Groebenzell, Germany

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