mfd: bd71828: Support ROHM BD71828 PMIC - core

BD71828GW is a single-chip power management IC for battery-powered portable
devices. The IC integrates 7 buck converters, 7 LDOs, and a 1500 mA
single-cell linear charger. Also included is a Coulomb counter, a real-time
clock (RTC), 3 GPO/regulator control pins, HALL input and a 32.768 kHz
clock gate.

Add MFD core driver providing interrupt controller facilities and i2c
access to sub device drivers.
Signed-off-by: Matti Vaittinen <matti.vaittinen@fi.rohmeurope.com>
Signed-off-by: Lee Jones <lee.jones@linaro.org>

drivers/mfd/Kconfig

@@ -1906,6 +1906,21 @@ config MFD_ROHM_BD70528
 	  10 bits SAR ADC for battery temperature monitor and 1S battery
 	  charger.
 
+config MFD_ROHM_BD71828
+	tristate "ROHM BD71828 Power Management IC"
+	depends on I2C=y
+	depends on OF
+	select REGMAP_I2C
+	select REGMAP_IRQ
+	select MFD_CORE
+	help
+	  Select this option to get support for the ROHM BD71828 Power
+	  Management IC. BD71828GW is a single-chip power management IC for
+	  battery-powered portable devices. The IC integrates 7 buck
+	  converters, 7 LDOs, and a 1500 mA single-cell linear charger.
+	  Also included is a Coulomb counter, a real-time clock (RTC), and
+	  a 32.768 kHz clock gate.
+
 config MFD_STM32_LPTIMER
 	tristate "Support for STM32 Low-Power Timer"
 	depends on (ARCH_STM32 && OF) || COMPILE_TEST

drivers/mfd/Makefile

@@ -252,6 +252,7 @@ obj-$(CONFIG_MFD_MXS_LRADC)     += mxs-lradc.o
 obj-$(CONFIG_MFD_SC27XX_PMIC)	+= sprd-sc27xx-spi.o
 obj-$(CONFIG_RAVE_SP_CORE)	+= rave-sp.o
 obj-$(CONFIG_MFD_ROHM_BD70528)	+= rohm-bd70528.o
+obj-$(CONFIG_MFD_ROHM_BD71828)	+= rohm-bd71828.o
 obj-$(CONFIG_MFD_ROHM_BD718XX)	+= rohm-bd718x7.o
 obj-$(CONFIG_MFD_STMFX) 	+= stmfx.o
 

include/linux/mfd/rohm-generic.h

@@ -8,6 +8,7 @@ enum rohm_chip_type {
 	ROHM_CHIP_TYPE_BD71837 = 0,
 	ROHM_CHIP_TYPE_BD71847,
 	ROHM_CHIP_TYPE_BD70528,
+	ROHM_CHIP_TYPE_BD71828,
 	ROHM_CHIP_TYPE_AMOUNT
 };