linux-kernel - [PATCH] drivers/power/sbs-battery.c: capacity attr = remaining relative capacity

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Message-Id: <201204250721.q3P7LmQN009128@gatekeeper.vosshq.de>
Date:	Wed, 25 Apr 2012 08:59:03 +0200
From:	Nikolaus Voss <n.voss@...nmann.de>
To:	linux-kernel@...r.kernel.org
Cc:	cbouatmailru@...il.com, rklein@...dia.com
Subject: [PATCH] drivers/power/sbs-battery.c: capacity attr = remaining
 relative capacity

Currently, the capacity exported by this driver refers to reg 0x0e,
which is the absolute state of charge which according to SBS
refers to the design capacity/ energy of the battery. It can be
> 100 % and drops below 100 % for a fully charged battery with
the battery aging.

This is not what the user exspects of a remaining capacity
indication between 0 and 100 % with 100 % referring to
a fully charged battery. This is provided by SBS reg 0x0d,
which is the relative state of charge referring to the
full charge capacity.

Signed-off-by: Nikolaus Voss <n.voss@...nmann.de>
---
 drivers/power/sbs-battery.c |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/drivers/power/sbs-battery.c b/drivers/power/sbs-battery.c
index 9ff8af0..182d2ed 100644
--- a/drivers/power/sbs-battery.c
+++ b/drivers/power/sbs-battery.c
@@ -89,7 +89,7 @@ static const struct chip_data {
 	[REG_CURRENT] =
 		SBS_DATA(POWER_SUPPLY_PROP_CURRENT_NOW, 0x0A, -32768, 32767),
 	[REG_CAPACITY] =
-		SBS_DATA(POWER_SUPPLY_PROP_CAPACITY, 0x0E, 0, 100),
+		SBS_DATA(POWER_SUPPLY_PROP_CAPACITY, 0x0D, 0, 100),
 	[REG_REMAINING_CAPACITY] =
 		SBS_DATA(POWER_SUPPLY_PROP_ENERGY_NOW, 0x0F, 0, 65535),
 	[REG_REMAINING_CAPACITY_CHARGE] =
-- 
1.7.5.4

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