Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755778AbZG1WGm (ORCPT ); Tue, 28 Jul 2009 18:06:42 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1755785AbZG1WGl (ORCPT ); Tue, 28 Jul 2009 18:06:41 -0400 Received: from buzzloop.caiaq.de ([212.112.241.133]:43560 "EHLO buzzloop.caiaq.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1755795AbZG1WGj (ORCPT ); Tue, 28 Jul 2009 18:06:39 -0400 Date: Wed, 29 Jul 2009 00:06:35 +0200 From: Daniel Mack To: linux-kernel@vger.kernel.org Cc: Ian Molton , Anton Vorontsov , Matt Reimer Subject: Re: [PATCH 1/2] power_supply: get_by_name and set_charged functionality Message-ID: <20090728220635.GH19257@buzzloop.caiaq.de> References: <20090723183451.GI13236@buzzloop.caiaq.de> <1248374154-15606-1-git-send-email-daniel@caiaq.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1248374154-15606-1-git-send-email-daniel@caiaq.de> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 3164 Lines: 89 ping? On Thu, Jul 23, 2009 at 08:35:53PM +0200, Daniel Mack wrote: > This adds a function to get a power_supply device from the class of > registered devices by name reference. It can be used to find a specific > battery to call power_supply_set_battery_charged() on. > > Some battery drivers might need that information to calibrate > themselves. > > Signed-off-by: Daniel Mack > Cc: Ian Molton > Cc: Anton Vorontsov > Cc: Matt Reimer > --- > drivers/power/power_supply_core.c | 28 ++++++++++++++++++++++++++++ > include/linux/power_supply.h | 3 +++ > 2 files changed, 31 insertions(+), 0 deletions(-) > > diff --git a/drivers/power/power_supply_core.c b/drivers/power/power_supply_core.c > index 58f10ac..ddb4800 100644 > --- a/drivers/power/power_supply_core.c > +++ b/drivers/power/power_supply_core.c > @@ -117,6 +117,34 @@ int power_supply_is_system_supplied(void) > } > EXPORT_SYMBOL_GPL(power_supply_is_system_supplied); > > +int power_supply_set_battery_charged(struct power_supply *psy) > +{ > + if (psy->type == POWER_SUPPLY_TYPE_BATTERY && psy->set_charged) { > + psy->set_charged(psy); > + return 0; > + } > + > + return -EINVAL; > +} > +EXPORT_SYMBOL_GPL(power_supply_set_battery_charged); > + > +static int power_supply_match_device_by_name(struct device *dev, void *data) > +{ > + const char *name = data; > + struct power_supply *psy = dev_get_drvdata(dev); > + > + return strcmp(psy->name, name) == 0; > +} > + > +struct power_supply *power_supply_get_by_name(char *name) > +{ > + struct device *dev = class_find_device(power_supply_class, NULL, name, > + power_supply_match_device_by_name); > + > + return dev ? dev_get_drvdata(dev) : NULL; > +} > +EXPORT_SYMBOL_GPL(power_supply_get_by_name); > + > int power_supply_register(struct device *parent, struct power_supply *psy) > { > int rc = 0; > diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h > index 594c494..49f3296 100644 > --- a/include/linux/power_supply.h > +++ b/include/linux/power_supply.h > @@ -126,6 +126,7 @@ struct power_supply { > enum power_supply_property psp, > union power_supply_propval *val); > void (*external_power_changed)(struct power_supply *psy); > + void (*set_charged)(struct power_supply *psy); > > /* For APM emulation, think legacy userspace. */ > int use_for_apm; > @@ -165,8 +166,10 @@ struct power_supply_info { > int use_for_apm; > }; > > +extern struct power_supply *power_supply_get_by_name(char *name); > extern void power_supply_changed(struct power_supply *psy); > extern int power_supply_am_i_supplied(struct power_supply *psy); > +extern int power_supply_set_battery_charged(struct power_supply *psy); > > #if defined(CONFIG_POWER_SUPPLY) || defined(CONFIG_POWER_SUPPLY_MODULE) > extern int power_supply_is_system_supplied(void); > -- > 1.6.3.1 > -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/