linux-kernel - Re: [PATCH v4 1/2] leds: core: Introduce LED pattern trigger

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Message-ID: <20180806080617.GA19523@amd>
Date:   Mon, 6 Aug 2018 10:06:17 +0200
From:   Pavel Machek <pavel@....cz>
To:     Baolin Wang <baolin.wang@...aro.org>
Cc:     Jacek Anaszewski <jacek.anaszewski@...il.com>,
        rteysseyre@...il.com, Bjorn Andersson <bjorn.andersson@...aro.org>,
        Mark Brown <broonie@...nel.org>,
        Linux LED Subsystem <linux-leds@...r.kernel.org>,
        LKML <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v4 1/2] leds: core: Introduce LED pattern trigger

On Mon 2018-08-06 15:33:12, Baolin Wang wrote:
> Hi Pavel,
> 
> On 6 August 2018 at 15:09, Pavel Machek <pavel@....cz> wrote:
> > Hi!
> >
> >> > In current implementation this file on read returns the number
> >> > of remaining repeat intervals. I'd add that to this description.
> >>
> >> I saw Pavel's comments that he did not suggest do this. So I will keep
> >> the original description?
> >
> > If that is accepted, the code should return originally written number.
> 
> But I think it is more reasonable if user can know how many
> repetitions were left. So for your hardware case, can we add
> pattern_get() interface back to get the repetition number?

Well, I'd say that we are mostly seeing "infinite" repetitions, or one
repetition.

Yes, interface could be added to the lowlever driver -- but I'm not
sure hardware really supports getting that information; could be
tricky on N900 for example.

I'd keep it simple for now.
									Pavel
-- 
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html

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