power: supply: Support ROHM bd99954 charger

The ROHM BD99954 is a Battery Management LSI for 1-4 cell Lithium-Ion
secondary battery intended to be used in space-constraint equipment such
as Low profile Notebook PC, Tablets and other applications. BD99954
provides a Dual-source Battery Charger, two port BC1.2 detection and a
Battery Monitor.

Support ROHM BD99954 Charger IC.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/supply/Kconfig

@@ -713,6 +713,15 @@ config CHARGER_BD70528
 	 information and altering charger configurations from charger
 	 block of the ROHM BD70528 Power Management IC.
 
+config CHARGER_BD99954
+	tristate "ROHM bd99954 charger driver"
+	depends on I2C
+	select LINEAR_RANGES
+	help
+	  Say Y here to enable support for getting battery and charger
+	  information and altering charger configurations from the ROHM
+	  BD99954 charger IC.
+
 config CHARGER_WILCO
 	tristate "Wilco EC based charger for ChromeOS"
 	depends on WILCO_EC

drivers/power/supply/Makefile

@@ -92,4 +92,5 @@ obj-$(CONFIG_CHARGER_SC2731)	+= sc2731_charger.o
 obj-$(CONFIG_FUEL_GAUGE_SC27XX)	+= sc27xx_fuel_gauge.o
 obj-$(CONFIG_CHARGER_UCS1002)	+= ucs1002_power.o
 obj-$(CONFIG_CHARGER_BD70528)	+= bd70528-charger.o
+obj-$(CONFIG_CHARGER_BD99954)	+= bd99954-charger.o
 obj-$(CONFIG_CHARGER_WILCO)	+= wilco-charger.o