linux-kernel - Re: [PATCH] power: pcf50633: introduces battery charging current control

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Message-ID: <20091020000121.GC19580@home.pavel.comp>
Date:	Tue, 20 Oct 2009 04:01:21 +0400
From:	Paul Fertser <fercerpav@...il.com>
To:	Pavel Machek <pavel@....cz>
Cc:	Anton Vorontsov <cbou@...l.ru>,
	David Woodhouse <dwmw2@...radead.org>,
	linux-kernel@...r.kernel.org,
	Nelson Castillo <arhuaco@...aks-unidos.net>,
	Balaji Rao <balajirrao@...nmoko.org>
Subject: Re: [PATCH] power: pcf50633: introduces battery charging current
	control

Hi,

Pavel, thanks for you review.

On Sat, Oct 17, 2009 at 07:01:24PM +0200, Pavel Machek wrote:
> > From: Balaji Rao <balajirrao@...nmoko.org>
> 
> Could we get some changelog here? Like 'it adds new file to sysfs
> interface, ...'

Done.

> > +static ssize_t
> > +show_chglim(struct device *dev, struct device_attribute *attr, char *buf)
> 
> Could we get meaningful function names?

Well, this function name is derived from the sysfs attribute name and
since we already have "usb_curlim" sysfs attribute and corresponding
functions show_usblim() and set_usblim() it might be beneficial to
keep the driver code consistent. I now documented the attribute
behaviour in the code in the hope that users will look it up if in
doubt.

> > @@ -31,6 +31,8 @@ struct pcf50633_platform_data {
> >  
> >  	int charging_restart_interval;
> >  
> > +	int chg_ref_current_ma;
> > +
> 
> ...and variable names? This is also inconsistent with name above.

I added a comment explaining what this value is supposed to be set
to. The name is borrowed directly from the datasheet where it is
called "charger reference current". I hope this is ok.

Please find the new patch attached.

NB: Anton, if you apply this modified version, a new comment in
include/linux/mfd/pcf50633/core.h will produce a trivial merge
conflict with the later patch ("get rid of charging restart software
auto-triggering"). I can resend the whole series for your convenience
after everything else is sorted out if you prefer.

-- 
Be free, use free (http://www.gnu.org/philosophy/free-sw.html) software!
mailto:fercerpav@...il.com

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