linux-kernel - [PATCH] power_supply: Add new power supply AUTHENTIC property

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Date:	Thu, 23 Aug 2012 06:50:21 +0530
From:	Ramakrishna Pallala <ramakrishna.pallala@...el.com>
To:	linux-kernel@...r.kernel.org
Cc:	Anton Vorontsov <cbouatmailru@...il.com>,
	Anton Vorontsov <anton.vorontsov@...aro.org>,
	Ramakrishna Pallala <ramakrishna.pallala@...el.com>
Subject: [PATCH] power_supply: Add new power supply AUTHENTIC property

It is possible that users can use non-standard chargers
or use invalid batteries especially with mobile devices.

This patch adds a new power supply property called 'AUTHENTIC' to
indicate this to the user(user space).

Signed-off-by: Ramakrishna Pallala <ramakrishna.pallala@...el.com>
---
 Documentation/power/power_supply_class.txt |    3 +++
 drivers/power/power_supply_sysfs.c         |    1 +
 include/linux/power_supply.h               |    1 +
 3 files changed, 5 insertions(+), 0 deletions(-)

diff --git a/Documentation/power/power_supply_class.txt b/Documentation/power/power_supply_class.txt
index 2f0ddc1..29a1fcd 100644
--- a/Documentation/power/power_supply_class.txt
+++ b/Documentation/power/power_supply_class.txt
@@ -81,6 +81,9 @@ This defines trickle and fast charges.  For batteries that
 are already charged or discharging, 'n/a' can be displayed (or
 'unknown', if the status is not known).
 
+AUTHENTIC - indicates the power supp(battery or charger) connected
+to the platform is authentic(1) or non authentic(0).
+
 HEALTH - represents health of the battery, values corresponds to
 POWER_SUPPLY_HEALTH_*, defined in battery.h.
 
diff --git a/drivers/power/power_supply_sysfs.c b/drivers/power/power_supply_sysfs.c
index 1d96614..be34a6d 100644
--- a/drivers/power/power_supply_sysfs.c
+++ b/drivers/power/power_supply_sysfs.c
@@ -138,6 +138,7 @@ static struct device_attribute power_supply_attrs[] = {
 	POWER_SUPPLY_ATTR(health),
 	POWER_SUPPLY_ATTR(present),
 	POWER_SUPPLY_ATTR(online),
+	POWER_SUPPLY_ATTR(authentic),
 	POWER_SUPPLY_ATTR(technology),
 	POWER_SUPPLY_ATTR(cycle_count),
 	POWER_SUPPLY_ATTR(voltage_max),
diff --git a/include/linux/power_supply.h b/include/linux/power_supply.h
index 3cfee0c..729768c 100644
--- a/include/linux/power_supply.h
+++ b/include/linux/power_supply.h
@@ -88,6 +88,7 @@ enum power_supply_property {
 	POWER_SUPPLY_PROP_HEALTH,
 	POWER_SUPPLY_PROP_PRESENT,
 	POWER_SUPPLY_PROP_ONLINE,
+	POWER_SUPPLY_PROP_AUTHENTIC,
 	POWER_SUPPLY_PROP_TECHNOLOGY,
 	POWER_SUPPLY_PROP_CYCLE_COUNT,
 	POWER_SUPPLY_PROP_VOLTAGE_MAX,
-- 
1.7.0.4

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