Hi,

On Mon, Feb 15, 2016 at 12:53:04PM +0100, Pavel Machek wrote:

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some time ago I did post series which added some conversion table from
voltage to percent for charging and discharging states [1] in
twl4030_madc driver. This approach was not accepted and we still want
to have something like that in kernel. We re-think re-thinking
original idea and also get reference where Pavel point us to formula
which could be used for computing voltage-to-percent conversion [2]

What about adding this formula as a default for the
voltage-to-percent-conversion to the generic-adc-battery
driver (and converting it to DT)? Would that be a better
solution than a table driven and twl4030 only driver?

I'd say battery, yes. And maybe even better would be putting it into
lib/ or seaparet driver, as it does not really depend on IIO? You just
supply voltage, current and internal resistance, and it produces number...

Can we put this small helper to some common power header file
which can be then included to driver which can use this formula.
I think it's better way then adding it to /lib as it won't be
used in whole kernel tree just in power. What do you think?
Thanks.

Sounds good to me.

Sounds fine for me, too.

-- Sebastian