power: supply: rt5033_charger: Add RT5033 charger device driver

This patch adds device driver of Richtek RT5033 PMIC. The driver supports
switching charger. rt5033 charger provides three charging modes. The charging
modes are pre-charge mode, fast charge mode and constant voltage mode. They
vary in charge rate, the charge parameters can be controlled by i2c interface.
Tested-by: Raymond Hackley <raymondhackley@protonmail.com>
Signed-off-by: Jakob Hauser <jahau@rocketmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Acked-by: Sebastian Reichel <sebastian.reichel@collabora.com>
Signed-off-by: Lee Jones <lee@kernel.org>
Link: https://lore.kernel.org/r/9556d4ebb30fd321e37aa0eb343554122e4720c9.1684182964.git.jahau@rocketmail.com

drivers/power/supply/Kconfig

@@ -766,6 +766,14 @@ config BATTERY_RT5033
 	  The fuelgauge calculates and determines the battery state of charge
 	  according to battery open circuit voltage.
 
+config CHARGER_RT5033
+	tristate "RT5033 battery charger support"
+	depends on MFD_RT5033
+	help
+	  This adds support for battery charger in Richtek RT5033 PMIC.
+	  The device supports pre-charge mode, fast charge mode and
+	  constant voltage mode.
+
 config CHARGER_RT9455
 	tristate "Richtek RT9455 battery charger driver"
 	depends on I2C

drivers/power/supply/Makefile

@@ -54,6 +54,7 @@ obj-$(CONFIG_BATTERY_MAX17040)	+= max17040_battery.o
 obj-$(CONFIG_BATTERY_MAX17042)	+= max17042_battery.o
 obj-$(CONFIG_BATTERY_MAX1721X)	+= max1721x_battery.o
 obj-$(CONFIG_BATTERY_RT5033)	+= rt5033_battery.o
+obj-$(CONFIG_CHARGER_RT5033)	+= rt5033_charger.o
 obj-$(CONFIG_CHARGER_RT9455)	+= rt9455_charger.o
 obj-$(CONFIG_CHARGER_RT9467)	+= rt9467-charger.o
 obj-$(CONFIG_CHARGER_RT9471)	+= rt9471.o

include/linux/mfd/rt5033.h

@@ -39,20 +39,4 @@ struct rt5033_battery {
 	struct power_supply	*psy;
 };
 
-/* RT5033 charger platform data */
-struct rt5033_charger_data {
-	unsigned int pre_uamp;
-	unsigned int pre_uvolt;
-	unsigned int const_uvolt;
-	unsigned int eoc_uamp;
-	unsigned int fast_uamp;
-};
-
-struct rt5033_charger {
-	struct device			*dev;
-	struct rt5033_dev		*rt5033;
-	struct power_supply		*psy;
-	struct rt5033_charger_data	*chg;
-};
-
 #endif /* __RT5033_H__ */