power: rk817: support rk817 charger driver

Change-Id: I2c1aca9706ee43f0b119cf775140a11fdb837e47
Signed-off-by: shengfei Xu <xsf@rock-chips.com>

Documentation/devicetree/bindings/power/rk817-charger.txt

@@ -0,0 +1,37 @@
+rk817-charger
+~~~~~~~~~~
+
+Required properties :
+ - compatible: "rk817,charger"
+ - min_input_voltage: minimum voltage from adapter
+ - max_input_current: maximum current from adapter
+ - max_chrg_current: maximum current for battery charge
+ - max_chrg_voltage: maximum charge voltage for battery
+ - chrg_finish_cur: charging termination current
+
+Optional properties :
+ - virtual_power: test mode for none battery
+ - power_dc2otg: dc can provide supply for otg 5v
+ - dc_det_adc: dc detect by saradc
+
+Example:
+
+rk817: pmic@20 {
+	compatible = "rockchip,rk817";
+	reg = <0x20>;
+
+	......
+
+	charger {
+		compatible = "rk817,charger";
+		min_input_voltage = <4500>;
+		max_input_current = <1500>;
+		max_chrg_current = <1300>;
+		max_chrg_voltage = <4200>;
+		chrg_finish_cur = <300>;
+		virtual_power = <0>;
+		dc_det_adc = <0>;
+	};
+
+	......
+};

drivers/mfd/rk808.c

@@ -755,6 +755,7 @@ static const struct mfd_cell rk817s[] = {
 	{ .name = "rk808-clkout",},
 	{ .name = "rk808-regulator",},
 	{ .name = "rk805-pinctrl", },
+	{ .name = "rk817-charger", .of_compatible = "rk817,charger", },
 	{
 		.name = "rk8xx-pwrkey",
 		.num_resources = ARRAY_SIZE(rk817_pwrkey_resources),

drivers/power/Kconfig

@@ -526,6 +526,13 @@ config BATTERY_RK816
 	  If you say yes here you will get support for the battery of RK816 PMIC.
 	  This driver can give support for Rk816 Battery Charge Interface.
 
+config CHARGER_RK817
+	bool "RK817 Charger driver"
+	depends on MFD_RK808
+	help
+	  If you say yes here you will get support for the charger of RK817 PMIC.
+	  This driver can give support for Rk817 Charger Interface.
+
 config BATTERY_RK818
 	bool "RK818 Battery driver"
 	depends on MFD_RK808

drivers/power/Makefile

@@ -41,6 +41,7 @@ obj-$(CONFIG_BATTERY_MAX17040)	+= max17040_battery.o
 obj-$(CONFIG_BATTERY_MAX17042)	+= max17042_battery.o
 obj-$(CONFIG_BATTERY_Z2)	+= z2_battery.o
 obj-$(CONFIG_BATTERY_RK816)	+= rk816_battery.o
+obj-$(CONFIG_CHARGER_RK817)	+= rk817_charger.o
 obj-$(CONFIG_BATTERY_RK818)	+= rk818_battery.o
 obj-$(CONFIG_CHARGER_RK818)	+= rk818_charger.o
 obj-$(CONFIG_BATTERY_RT5033)	+= rt5033_battery.o
@@ -78,4 +79,4 @@ obj-$(CONFIG_CHARGER_TPS65090)	+= tps65090-charger.o
 obj-$(CONFIG_CHARGER_TPS65217)	+= tps65217_charger.o
 obj-$(CONFIG_POWER_RESET)	+= reset/
 obj-$(CONFIG_AXP288_FUEL_GAUGE) += axp288_fuel_gauge.o
-obj-$(CONFIG_AXP288_CHARGER)	+= axp288_charger.o
+obj-$(CONFIG_AXP288_CHARGER)	+= axp288_charger.o