Thread (13 messages) 13 messages, 5 authors, 2016-11-04

[PATCH v2 2/2] power: bq27xxx_battery: add poll interval property query

From: Matt Ranostay <hidden>
Date: 2016-11-04 05:01:40
Also in: linux-omap, lkml

On Wed, Nov 2, 2016 at 1:22 AM, Pavel Machek [off-list ref] wrote:
Hi!
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Better then previous one.

But my version of bq27xxx_battery.c already contains this:
This is for allowing udev rule to set the properties as well.
otherwise a kinda crude RUN = " echo value >
/sys/module/bq27xxx_battery/parameters/poll_interval" is required.
Any thoughts on this?
I'd say  echo value >
/sys/module/bq27xxx_battery/parameters/poll_interval .. is quite
adequate solution...?

Alternatively, convince us that something else is useful for everyone,
and we can do the right thing (poll more often when battery is nearly
empty), automatically...
Ok should have had the patchset set it per device, and not use the
global poll_interval. Of need to add some logic to see if uses the
global poll_interval or it's own setting.

There are times where you could have multiple batteries connected to
multiple fuel gauges, and want to up the polling interval on certain
ones that are discharging at different rates.

But of course I'll let you guys let me know if this seems useful at all.
I agree per-device polling would be cleaner.
Ok I'll work something up for RFC.
But unless you have hardware with more than one bq27xxx, I'd avoid the
work...

Now... its also possible that poll_interval should change itself
(within kernel) to do the right thing.
True but that is state machine territory, but I'll worry about that later...
Best regards,

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