power: supply: Add driver for Microchip UCS1002

Add driver for Microchip UCS1002 Programmable USB Port Power
Controller with Charger Emulation. The driver exposed a power supply
device to control/monitor various parameter of the device as well as a
regulator to allow controlling VBUS line.
Signed-off-by: Enric Balletbo Serra <enric.balletbo@collabora.com>
Signed-off-by: Andrey Smirnov <andrew.smirnov@gmail.com>
Reviewed-by: Guenter Roeck <linux@roeck-us.net>
Cc: Chris Healy <cphealy@gmail.com>
Cc: Lucas Stach <l.stach@pengutronix.de>
Cc: Fabio Estevam <festevam@gmail.com>
Cc: Guenter Roeck <linux@roeck-us.net>
Cc: linux-kernel@vger.kernel.org
Cc: linux-pm@vger.kernel.org
Signed-off-by: Sebastian Reichel <sebastian.reichel@collabora.com>

drivers/power/supply/Kconfig

@@ -671,4 +671,13 @@ config FUEL_GAUGE_SC27XX
 	 Say Y here to enable support for fuel gauge with SC27XX
 	 PMIC chips.
 
+config CHARGER_UCS1002
+	tristate "Microchip UCS1002 USB Port Power Controller"
+	depends on I2C
+	depends on OF
+	select REGMAP_I2C
+	help
+	  Say Y to enable support for Microchip UCS1002 Programmable
+	  USB Port Power Controller with Charger Emulation.
+
 endif # POWER_SUPPLY

drivers/power/supply/Makefile

@@ -88,3 +88,4 @@ obj-$(CONFIG_AXP288_CHARGER)	+= axp288_charger.o
 obj-$(CONFIG_CHARGER_CROS_USBPD)	+= cros_usbpd-charger.o
 obj-$(CONFIG_CHARGER_SC2731)	+= sc2731_charger.o
 obj-$(CONFIG_FUEL_GAUGE_SC27XX)	+= sc27xx_fuel_gauge.o
+obj-$(CONFIG_CHARGER_UCS1002)	+= ucs1002_power.o