Add LTC2941/LTC2943 Battery Gauge Driver

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>

1 files changed, 1 insertions, 0 deletions

diff --git a/drivers/power/Makefile b/drivers/power/Makefile
index 31216cb7e8a1..36f9e0d10111 100644
--- a/drivers/power/Makefile
+++ b/drivers/power/Makefile
@@ -20,6 +20,7 @@ obj-$(CONFIG_BATTERY_DS2760)	+= ds2760_battery.o
 obj-$(CONFIG_BATTERY_DS2780)    += ds2780_battery.o
 obj-$(CONFIG_BATTERY_DS2781)    += ds2781_battery.o
 obj-$(CONFIG_BATTERY_DS2782)    += ds2782_battery.o
+obj-$(CONFIG_BATTERY_GAUGE_LTC2941)     += ltc2941-battery-gauge.o
 obj-$(CONFIG_BATTERY_GOLDFISH)  += goldfish_battery.o
 obj-$(CONFIG_BATTERY_PMU)       += pmu_battery.o
 obj-$(CONFIG_BATTERY_OLPC)      += olpc_battery.o