Anton, Please ignore this patch. I submitted this as part of charging framework.
-jtc > -----Original Message----- > From: linux-kernel-ow...@vger.kernel.org [mailto:linux-kernel- > ow...@vger.kernel.org] On Behalf Of Jenny TC > Sent: Friday, October 12, 2012 10:13 PM > To: Anton Vorontsov; Anton Vorontsov; dw...@infradead.org; linux- > ker...@vger.kernel.org > Cc: Tc, Jenny; David Rajamanickam, Ajay Thomas; Pallala, Ramakrishna > Subject: [PATCH V2] power_supply : Introduce battery identification > framework > > This patch introduces generic battid framework. Different battid drivers > sitting on different linux kernel subsystem (1wire, I2C, SFI etc) can > interface > with the power supply susbsytem using the APIs exposed in the power > supply usbsystem. The consumers (charger driver/battery driver/power > management drivers) can register for notification from the battery id drivers > using the APIs from this framework > > Signed-off-by: Jenny TC <jenny...@intel.com> > Signed-off-by: adavidra <ajay.thomas.david.rajamanic...@intel.com> > --- > V1: Submitted the initialcode > V2: > Added file headers > > drivers/power/Kconfig | 8 ++++ > drivers/power/Makefile | 1 + > drivers/power/battery_id.c | 94 > ++++++++++++++++++++++++++++++++++++++ > include/linux/power/battery_id.h | 50 ++++++++++++++++++++ > 4 files changed, 153 insertions(+) > create mode 100644 drivers/power/battery_id.c create mode 100644 > include/linux/power/battery_id.h > > diff --git a/drivers/power/Kconfig b/drivers/power/Kconfig index > 49a8939..74b297d 100644 > --- a/drivers/power/Kconfig > +++ b/drivers/power/Kconfig > @@ -8,6 +8,14 @@ menuconfig POWER_SUPPLY > > if POWER_SUPPLY > > +config POWER_SUPPLY_BATTID > + bool "Power Supply Battery Identification Framework" > + help > + Say Y here to enable the power supply battery idnetification > + framework. The framework would allow different battery > identification > + drivers to interface with power supply subsystem. Also it allows > consumer > + drivers to register for notification from the power_supply > subsystem. > + > config POWER_SUPPLY_DEBUG > bool "Power supply debug" > help > diff --git a/drivers/power/Makefile b/drivers/power/Makefile index > b949cf8..6a63f45 100644 > --- a/drivers/power/Makefile > +++ b/drivers/power/Makefile > @@ -3,6 +3,7 @@ ccflags-$(CONFIG_POWER_SUPPLY_DEBUG) := -DDEBUG > power_supply-y := power_supply_core.o > power_supply-$(CONFIG_SYSFS) += power_supply_sysfs.o > power_supply-$(CONFIG_LEDS_TRIGGERS) += power_supply_leds.o > +power_supply-$(CONFIG_POWER_SUPPLY_BATTID) += battery_id.o > > obj-$(CONFIG_POWER_SUPPLY) += power_supply.o > obj-$(CONFIG_GENERIC_ADC_BATTERY) += generic-adc-battery.o > diff --git a/drivers/power/battery_id.c b/drivers/power/battery_id.c new file > mode 100644 index 0000000..f6160b6 > --- /dev/null > +++ b/drivers/power/battery_id.c > @@ -0,0 +1,94 @@ > +/* > + * battery_id.c - Power supply battery identification framework > + * > + * Copyright (C) 2012 Intel Corporation > + * > + * > +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > ~~~~~~~~~~~~~~ > +~~~ > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License as published by > + * the Free Software Foundation; version 2 of the License. > + * > + * This program is distributed in the hope that it will be useful, but > + * WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > GNU > + * General Public License for more details. > + * > + * You should have received a copy of the GNU General Public License > +along > + * with this program; if not, write to the Free Software Foundation, > +Inc., > + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. > + * > + * > +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > ~~~~~~~~~~~~~~ > +~~~ > + * Author: Jenny TC <jenny...@intel.com> > + * Author: David Rajamanickam, Ajay Thomas > + * <ajay.thomas.david.rajamanic...@intel.com> > + */ > + > +#include <linux/module.h> > +#include <linux/slab.h> > +#include <linux/io.h> > +#include <linux/err.h> > +#include <linux/notifier.h> > +#include <linux/power/battery_id.h> > + > +ATOMIC_NOTIFIER_HEAD(batt_id_notifier); > + > +static struct ps_batt_chg_prof *batt_property; static int batt_status; > + > +int batt_id_reg_notifier(struct notifier_block *nb) { > + return atomic_notifier_chain_register(&batt_id_notifier, nb); } > +EXPORT_SYMBOL_GPL(batt_id_reg_notifier); > + > +void batt_id_unreg_notifier(struct notifier_block *nb) { > + atomic_notifier_chain_unregister(&batt_id_notifier, nb); } > +EXPORT_SYMBOL_GPL(batt_id_unreg_notifier); > + > + > +/** > + * battery_prop_changed - Update properties when battery connection > status > + * changes > + * @battery_conn_stat : The current connection status of battery > + * @batt_prop : Address of the ps_batt_chg_prof structure with the > updated > + * values passed from the calling function > + * > + * Whenever the battery connection status changes this function will be > +called > + * to indicate a change in the status and to update the status and > +value of > + * properties > + */ > +void battery_prop_changed(int battery_conn_stat, > + struct ps_batt_chg_prof *batt_prop) > +{ > + if (batt_status != battery_conn_stat) { > + if (battery_conn_stat == > POWER_SUPPLY_BATTERY_INSERTED) > + batt_property = batt_prop; > + else > + batt_property = NULL; > + > + batt_status = battery_conn_stat; > + } > + > + atomic_notifier_call_chain(&batt_id_notifier, > + 0, &(batt_property)); > + > +} > +EXPORT_SYMBOL_GPL(battery_prop_changed); > + > +/** > + * get_batt_prop - Get the battery connection status and updated > +properties > + * @batt_prop : battery properties structure copied to this address */ > +int get_batt_prop(struct ps_batt_chg_prof *batt_prop) { > + if (batt_property) > + memcpy(batt_prop, batt_property, > + sizeof(struct ps_batt_chg_prof)); > + else > + return -ENOMEM; > + return 0; > +} > +EXPORT_SYMBOL_GPL(get_batt_prop); > diff --git a/include/linux/power/battery_id.h > b/include/linux/power/battery_id.h > new file mode 100644 > index 0000000..9a4832e > --- /dev/null > +++ b/include/linux/power/battery_id.h > @@ -0,0 +1,50 @@ > +/* > + * battery_id.h - Power supply battery identification framework header > +file > + * > + * Copyright (C) 2012 Intel Corporation > + * > + * > +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > ~~~~~~~~~~~~~~ > +~~~ > + * > + * This program is free software; you can redistribute it and/or modify > + * it under the terms of the GNU General Public License as published by > + * the Free Software Foundation; version 2 of the License. > + * > + * This program is distributed in the hope that it will be useful, but > + * WITHOUT ANY WARRANTY; without even the implied warranty of > + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the > GNU > + * General Public License for more details. > + * > + * You should have received a copy of the GNU General Public License > +along > + * with this program; if not, write to the Free Software Foundation, > +Inc., > + * 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA. > + * > + * > +~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ > ~~~~~~~~~~~~~~ > +~~~ > + * Author: Jenny TC <jenny...@intel.com> > + * Author: David Rajamanickam, Ajay Thomas > + * <ajay.thomas.david.rajamanic...@intel.com> > + */ > + > +#ifndef __BATTERY_ID_H__ > + > +#define __BATTERY_ID_H__ > + > +enum { > + POWER_SUPPLY_BATTERY_REMOVED = 0, > + POWER_SUPPLY_BATTERY_INSERTED, > +}; > + > +/* charging profile structure definition */ struct ps_batt_chg_prof { > + enum batt_chrg_prof_type chrg_prof_type; > + void *batt_prof; > +}; > + > +/*For notification during battery change event*/ > +extern struct atomic_notifier_head batt_id_notifier; > + > +extern void battery_prop_changed(int battery_conn_stat, > + struct ps_batt_chg_prof *batt_prop); extern > int > +get_batt_prop(struct ps_batt_chg_prof *batt_prop); extern int > +batt_id_reg_notifier(struct notifier_block *nb); extern void > +batt_id_unreg_notifier(struct notifier_block *nb); #endif > -- > 1.7.9.5 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the > body of a message to majord...@vger.kernel.org More majordomo info at > http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/