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Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG

From Pavel Machek <pavel@ucw.cz>
Newsgroups linux.kernel
Subject Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG
Date 2017-04-08 11:40 +0200
Message-ID <ttV0B-3tZ-5@gated-at.bofh.it> (permalink)
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On Fri 2017-04-07 13:36:49, Bjorn Andersson wrote:
> On Fri 07 Apr 06:32 PDT 2017, Pavel Machek wrote:
> 
> > > For the patterns I don't know how a trigger for this would look like,
> > > how would setting the pattern of a trigger be propagated down to the
> > > hardware?
> > 
> > Well... I'm not sure if we _want_ to do triggers for
> > patterns. LED triggers change rather quickly (100 times a second?) so
> > doing them in kernel makes sense. Patterns take 10s of seconds, so we
> > do not need to handle them in kernel. 
> > 
> 
> On any current Qualcomm based phone (using the Qualcomm PMIC to drive
> the RGB notification LED) the patterns are hard coded in DeviceTree and
> the option you have in runtime is to enable/disable the usage of the
> configured pattern and a few knobs of how to traverse the configured
> pattern.

Yes... that's easy, but I believe too limiting. Users will want to
configure their own patterns for their own events.

> When you enter e.g. a low-battery scenario you trigger the red LED to
> run its low-battery-pattern and you don't touch it until there's a
> higher prio notification (e.g. someone connects the charger).

Yes, I have something like that, too.

https://gitlab.com/tui/tui/blob/master/ofone/watchdog.py

									Pavel

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

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Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Rob Herring <robh@kernel.org> - 2017-03-29 04:20 +0200
  Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Bjorn Andersson <bjorn.andersson@linaro.org> - 2017-03-29 21:10 +0200
    Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Pavel Machek <pavel@ucw.cz> - 2017-03-30 00:30 +0200
      Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Bjorn Andersson <bjorn.andersson@linaro.org> - 2017-03-30 02:20 +0200
        Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Pavel Machek <pavel@ucw.cz> - 2017-03-30 09:50 +0200
          Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-03-31 11:30 +0200
            Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-04-02 15:00 +0200
              Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Bjorn Andersson <bjorn.andersson@linaro.org> - 2017-04-03 20:30 +0200
                Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-04-03 22:40 +0200
                Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Pavel Machek <pavel@ucw.cz> - 2017-04-10 12:00 +0200
            Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Bjorn Andersson <bjorn.andersson@linaro.org> - 2017-04-03 21:10 +0200
              Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-04-03 22:40 +0200
                Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Bjorn Andersson <bjorn.andersson@linaro.org> - 2017-04-07 22:30 +0200
                Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Pavel Machek <pavel@ucw.cz> - 2017-04-08 12:00 +0200
                Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Pavel Machek <pavel@ucw.cz> - 2017-04-08 15:40 +0200
                Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Jacek Anaszewski <jacek.anaszewski@gmail.com> - 2017-04-09 14:40 +0200
              Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Pavel Machek <pavel@ucw.cz> - 2017-04-07 15:40 +0200
                Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Bjorn Andersson <bjorn.andersson@linaro.org> - 2017-04-07 22:40 +0200
                Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Pavel Machek <pavel@ucw.cz> - 2017-04-08 11:40 +0200
            Re: [PATCH 1/2] leds: Add driver for Qualcomm LPG Pavel Machek <pavel@ucw.cz> - 2017-04-07 15:00 +0200

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