power: axp288_charger: axp288 charger driver

This patch adds new power supply charger driver support
for X-Power AXP288 PMIC integrated charger.

This driver interfaces with the axp20x mfd driver as a cell
and listens to extcon cable events for setting up charging.

Signed-off-by: Ramakrishna Pallala <ramakrishna.pallala@intel.com>
Acked-by: Lee Jones <lee.jones@linaro.org>
Signed-off-by: Sebastian Reichel <sre@kernel.org>

drivers/power/Kconfig

@@ -204,6 +204,13 @@ config CHARGER_DA9150
 	  This driver can also be built as a module. If so, the module will be
 	  called da9150-charger.
 
+config AXP288_CHARGER
+	tristate "X-Powers AXP288 Charger"
+	depends on MFD_AXP20X && EXTCON_AXP288
+	help
+	  Say yes here to have support X-Power AXP288 power management IC (PMIC)
+	  integrated charger.
+
 config AXP288_FUEL_GAUGE
 	tristate "X-Powers AXP288 Fuel Gauge"
 	depends on MFD_AXP20X && IIO

drivers/power/Makefile

@@ -66,3 +66,4 @@ obj-$(CONFIG_CHARGER_SMB347)	+= smb347-charger.o
 obj-$(CONFIG_CHARGER_TPS65090)	+= tps65090-charger.o
 obj-$(CONFIG_POWER_RESET)	+= reset/
 obj-$(CONFIG_AXP288_FUEL_GAUGE) += axp288_fuel_gauge.o
+obj-$(CONFIG_AXP288_CHARGER)	+= axp288_charger.o

include/linux/mfd/axp20x.h

@@ -275,4 +275,11 @@ struct axp20x_fg_pdata {
 	int thermistor_curve[MAX_THERM_CURVE_SIZE][2];
 };
 
+struct axp20x_chrg_pdata {
+	int max_cc;
+	int max_cv;
+	int def_cc;
+	int def_cv;
+};
+
 #endif /* __LINUX_MFD_AXP20X_H */