From: Pavel Machek <pavel@ucw.cz>
To: Linus Walleij <linus.walleij@linaro.org>
Cc: "Jenny Tc" <jenny.tc@intel.com>,
"linux-kernel@vger.kernel.org" <linux-kernel@vger.kernel.org>,
"Dmitry Eremin-Solenikov" <dbaryshkov@gmail.com>,
"Anton Vorontsov" <cbouatmailru@gmail.com>,
"Anton Vorontsov" <anton.vorontsov@linaro.org>,
"Kim Milo" <Milo.Kim@ti.com>, "Lee Jones" <lee.jones@linaro.org>,
"Jingoo Han" <jg1.han@samsung.com>,
"Chanwoo Choi" <cw00.choi@samsung.com>,
"Sachin Kamat" <sachin.kamat@linaro.org>,
"Lars-Peter Clausen" <lars@metafoo.de>,
"Pali Rohár" <pali.rohar@gmail.com>,
"Rhyland Klein" <rklein@nvidia.com>,
"Rafael J. Wysocki" <rjw@rjwysocki.net>,
"David Woodhouse" <dwmw2@infradead.org>,
"Tony Lindgren" <tony@atomide.com>,
"Russell King" <linux@arm.linux.org.uk>,
"Sebastian Reichel" <sre@ring0.de>,
"Aaro Koskinen" <aaro.koskinen@iki.fi>,
"Pallala Ramakrishna" <ramakrishna.pallala@intel.com>
Subject: Re: [PATCH 2/4] power_supply: Introduce generic psy charging driver
Date: Fri, 7 Mar 2014 21:09:50 +0100 [thread overview]
Message-ID: <20140307200949.GA27645@amd.pavel.ucw.cz> (raw)
In-Reply-To: <CACRpkdbuCC=-aYmyeaGW0GfkhRU8SEc=1+2f6k3tA7TygiZRJA@mail.gmail.com>
Hi!
> >> > +++ b/include/linux/power/power_supply_charger.h
> >>
> >> > +#define MAX_CUR_VOLT_SAMPLES 3
> >> > +#define DEF_CUR_VOLT_SAMPLE_JIFF (30*HZ)
> >>
> >> Why are things defined in Jiffies like this insead of seconds, milliseconds
> >> etc? This will vary with the current operating frequency of the system,
> >> why should physical measurements do that?
> >
> > Is it fine if I use msecs_to_jiffies(30000)?
>
> Keep the
> #define DEF_CUR_VOLT_SAMPLE_PERIOD 30000
>
> Then use msecs_to_jiffies(DEF_CUR_VOLT_SAMPLE_PERIOD)
> in the call site.
Actually, I do not think this is good suggestion. 30*HZ -- is pretty
clearly 30 seconds. 30000 may be 30sec or 30msec ... hard to tell.
If the constant is used in just one place, maybe you don't need the
define?
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2014-03-07 20:09 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2014-02-20 5:53 [PATCH v6 0/4] power_supply: Introduce power supply charging driver Jenny TC
2014-02-20 5:53 ` [PATCH 1/4] power_supply: Add inlmt,iterm, min/max temp props Jenny TC
2014-02-20 5:53 ` [PATCH 2/4] power_supply: Introduce generic psy charging driver Jenny TC
2014-02-27 20:08 ` Linus Walleij
2014-02-28 4:27 ` Jenny Tc
2014-03-07 3:03 ` Linus Walleij
2014-03-07 3:49 ` Jenny Tc
2014-03-07 20:09 ` Pavel Machek [this message]
2014-02-28 10:01 ` Pavel Machek
2014-03-07 3:04 ` Linus Walleij
2014-03-07 20:10 ` Pavel Machek
2014-03-12 14:37 ` Linus Walleij
2014-03-13 9:12 ` Pavel Machek
2014-03-14 10:36 ` Linus Walleij
2014-03-14 19:25 ` Mark Brown
2014-02-20 5:53 ` [PATCH 3/4] power_supply: Introduce PSE compliant algorithm Jenny TC
2014-02-20 5:54 ` [PATCH 4/4] power_supply: bq24261 charger driver Jenny TC
-- strict thread matches above, loose matches on Subject: below --
2014-02-04 5:12 [PATCH v5 0/4] power_supply: Introduce power supply charging driver Jenny TC
2014-02-04 5:12 ` [PATCH 2/4] power_supply: Introduce generic psy " Jenny TC
2014-02-04 11:36 ` Pavel Machek
2014-02-05 8:14 ` Jenny Tc
2014-02-12 11:00 ` Pavel Machek
2014-02-13 0:51 ` Jingoo Han
2014-01-30 17:30 [PATCH v4 0/4] power_supply: Introduce power supply " Jenny TC
2014-01-30 17:30 ` [PATCH 2/4] power_supply: Introduce generic psy " Jenny TC
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