linux-kernel - RE: [PATCH 3/4] power: Add support for DA9150 Fuel-Gauge

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Message-ID: <2E89032DDAA8B9408CB92943514A0337AB555F19@SW-EX-MBX01.diasemi.com>
Date:	Mon, 22 Jun 2015 10:20:04 +0000
From:	"Opensource [Adam Thomson]" <Adam.Thomson.Opensource@...semi.com>
To:	Paul Bolle <pebolle@...cali.nl>,
	"Opensource [Adam Thomson]" <Adam.Thomson.Opensource@...semi.com>
CC:	Lee Jones <lee.jones@...aro.org>,
	Samuel Ortiz <sameo@...ux.intel.com>,
	Sebastian Reichel <sre@...nel.org>,
	Dmitry Eremin-Solenikov <dbaryshkov@...il.com>,
	David Woodhouse <dwmw2@...radead.org>,
	Rob Herring <robh+dt@...nel.org>,
	Pawel Moll <pawel.moll@....com>,
	Mark Rutland <mark.rutland@....com>,
	Ian Campbell <ijc+devicetree@...lion.org.uk>,
	"Kumar Gala" <galak@...eaurora.org>,
	"linux-pm@...r.kernel.org" <linux-pm@...r.kernel.org>,
	"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
	"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
	Support Opensource <Support.Opensource@...semi.com>
Subject: RE: [PATCH 3/4] power: Add support for DA9150 Fuel-Gauge

On June 19, 2015 17:52, Paul Bolle wrote:

> On Thu, 2015-06-18 at 17:06 +0100, Adam Thomson wrote:
> > --- /dev/null
> > +++ b/drivers/power/da9150-fg.c
> 
> > +/* Register external function to give battery temperature */
> > +void da9150_fg_register_temp_cb(struct power_supply *psy,
> da9150_read_temp_t cb,
> > +				void *cb_context)
> > +{
> > +	struct da9150_fg *fg = dev_get_drvdata(psy->dev.parent);
> > +
> > +	fg->read_bat_temp = cb;
> > +	fg->bat_temp_context = cb_context;
> > +}
> > +EXPORT_SYMBOL_GPL(da9150_fg_register_temp_cb);
> 
> This series doesn't add a user of this export. Actually, it doesn't even
> add a local caller of this function. Is a patch that adds a user of this
> function queued somewhere?
 
The device relies on the battery providing temperature through a dedicated
pin, but that isn't always the case. I added this function as a means to handle
the scenarios where the battery being used didn't provide such a feature so
this allows for an alternative method of giving the battery temperature. At
present there is no patch lined up to use this.