Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753907AbZGWSgN (ORCPT ); Thu, 23 Jul 2009 14:36:13 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753632AbZGWSgN (ORCPT ); Thu, 23 Jul 2009 14:36:13 -0400 Received: from buzzloop.caiaq.de ([212.112.241.133]:51148 "EHLO buzzloop.caiaq.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753486AbZGWSgL (ORCPT ); Thu, 23 Jul 2009 14:36:11 -0400 From: Daniel Mack To: linux-kernel@vger.kernel.org Cc: Daniel Mack , Ian Molton , Anton Vorontsov , Matt Reimer Subject: [PATCH 1/2] power_supply: get_by_name and set_charged functionality Date: Thu, 23 Jul 2009 20:35:53 +0200 Message-Id: <1248374154-15606-1-git-send-email-daniel@caiaq.de> X-Mailer: git-send-email 1.6.3.1 In-Reply-To: <20090723183451.GI13236@buzzloop.caiaq.de> References: <20090723183451.GI13236@buzzloop.caiaq.de> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 2934 Lines: 86 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/