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Add LTC2941/LTC2943 Battery Gauge Driver

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Both the LTC2941 and LTC2943 measure battery capacity.
The LTC2943 is compatible with the LTC2941, it adds voltage and
temperature monitoring, and uses a slightly different conversion
formula for the charge counter.

To avoid confusion with e.g. the LTC2945, the driver is called
LTC2941 instead of LTC294X.

v2: Fix units of measurement: uV, uA and centidegrees.
v3: Correctly set configuration register. Allow negative values
    for the sense resistor.
v4: Run checkpatch.pl and fix all errors and warnings.
v5: Prefix "lltc," to devicetree properties.

Signed-off-by: Mike Looijmans <mike.looijmans@topic.nl>
[ removed .owner field ]
Signed-off-by: Sebastian Reichel <sre@kernel.org>
This commit is contained in:
Mike Looijmans
2014-10-28 08:05:12 +01:00
committed by Sebastian Reichel
parent 79969f6aaf
commit 085bc24d15
3 changed files with 556 additions and 0 deletions
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drivers/power/Kconfig
+8
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@@ -388,6 +388,14 @@ config CHARGER_TPS65090
Say Y here to enable support for battery charging with TPS65090
PMIC chips.
config BATTERY_GAUGE_LTC2941
tristate "LTC2941/LTC2943 Battery Gauge Driver"
depends on I2C
help
Say Y here to include support for LTC2941 and LTC2943 Battery
Gauge IC. The driver reports the charge count continuously, and
measures the voltage and temperature every 10 seconds.
config AB8500_BM
bool "AB8500 Battery Management Driver"
depends on AB8500_CORE && AB8500_GPADC