RE: [PATCH V2] power_supply : Introduce battery identificationframework

[Tc, Jenny]

Anton,

Please ignore this patch. I submitted this as part of charging framework.

-jtc

> -----Original Message-----
> From: linux-kernel-owner@xxxxxxxxxxxxxxx [mailto:linux-kernel-
> owner@xxxxxxxxxxxxxxx] On Behalf Of Jenny TC
> Sent: Friday, October 12, 2012 10:13 PM
> To: Anton Vorontsov; Anton Vorontsov; dwmw2@xxxxxxxxxxxxx; linux-
> kernel@xxxxxxxxxxxxxxx
> 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.tc@xxxxxxxxx>
> Signed-off-by: adavidra <ajay.thomas.david.rajamanickam@xxxxxxxxx>
> ---
> 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.tc@xxxxxxxxx>
> + * Author: David Rajamanickam, Ajay Thomas
> + *		<ajay.thomas.david.rajamanickam@xxxxxxxxx>
> + */
> +
> +#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.tc@xxxxxxxxx>
> + * Author: David Rajamanickam, Ajay Thomas
> + *		<ajay.thomas.david.rajamanickam@xxxxxxxxx>
> + */
> +
> +#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
> 
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