linux-kernel - Re: [PATCH 2/4] power_supply: Introduce generic psy charging driver

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Message-ID: <CACRpkda6VOStrazzMXXUFOQZsr1P0amVdyzLQ_wTHXmshsV2=A@mail.gmail.com>
Date:	Fri, 14 Mar 2014 11:36:40 +0100
From:	Linus Walleij <linus.walleij@...aro.org>
To:	Pavel Machek <pavel@....cz>, Mark Brown <broonie@...nel.org>,
	Liam Girdwood <lgirdwood@...il.com>
Cc:	Jenny TC <jenny.tc@...el.com>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	Anton Vorontsov <cbouatmailru@...il.com>,
	Anton Vorontsov <anton.vorontsov@...aro.org>,
	Kim Milo <Milo.Kim@...com>, Lee Jones <lee.jones@...aro.org>,
	Jingoo Han <jg1.han@...sung.com>,
	Chanwoo Choi <cw00.choi@...sung.com>,
	Sachin Kamat <sachin.kamat@...aro.org>,
	Lars-Peter Clausen <lars@...afoo.de>,
	Pali Rohár <pali.rohar@...il.com>,
	Rhyland Klein <rklein@...dia.com>,
	"Rafael J. Wysocki" <rjw@...ysocki.net>,
	David Woodhouse <dwmw2@...radead.org>,
	Tony Lindgren <tony@...mide.com>,
	Russell King <linux@....linux.org.uk>,
	Sebastian Reichel <sre@...g0.de>,
	Aaro Koskinen <aaro.koskinen@....fi>,
	Pallala Ramakrishna <ramakrishna.pallala@...el.com>,
	Ивайло Димитров <freemangordon@....bg>,
	Linux-OMAP <linux-omap@...r.kernel.org>
Subject: Re: [PATCH 2/4] power_supply: Introduce generic psy charging driver

On Thu, Mar 13, 2014 at 10:12 AM, Pavel Machek <pavel@....cz> wrote:
> Hi!
>
>> > 30*HZ means 30 seconds in the kernel... what is hard to understand
>> > about it?
>>
>> Well I might be picky, but since it is a charging algorithm dealing with
>> ampères, volts, constant-current/constant-voltage, watchdogs and
>> timeouts, all stated in SI units, it would be nice if all such constants
>> were specified in simple units instead of kernel-specific terms.
>
> I agree HZ is badly named, but hopefully anyone working on kernel is
> already familiar with it.
>
> But... what would actually help: I believe we should introduce
> milivolt_t, miliamp_t, milisec_t etc... types. Storing milivolts in
> int, then having comment saying "milivolts" is just wrong.

Hm! I bet the regulator subsystem maintainers have opinions
on that.

Yours,
Linus Walleij
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