mfd: sec: Add support for S2MPG10 PMIC

Add support for Samsung's S2MPG10 PMIC, which is a Power Management IC
for mobile applications with buck converters, various LDOs, power
meters, RTC, clock outputs, and additional GPIOs interfaces.

Contrary to existing Samsung S2M series PMICs supported, communication
is not via I2C, but via the Samsung ACPM firmware.

This commit adds the core driver.

Signed-off-by: André Draszik <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Lee Jones <[email protected]>

Author: andred

drivers/mfd/Kconfig

@@ -1316,6 +1316,23 @@ config MFD_SEC_CORE
 	select MFD_CORE
 	select REGMAP_IRQ
 
+config MFD_SEC_ACPM
+	tristate "Samsung Electronics S2MPG1x PMICs"
+	depends on EXYNOS_ACPM_PROTOCOL
+	depends on OF
+	select MFD_SEC_CORE
+	help
+	  Support for the Samsung Electronics PMICs with ACPM interface.
+	  This is a Power Management IC for mobile applications with buck
+	  converters, various LDOs, power meters, RTC, clock outputs, and
+	  additional GPIOs interfaces.
+	  This driver provides common support for accessing the device;
+	  additional drivers must be enabled in order to use the functionality
+	  of the device.
+
+	  To compile this driver as a module, choose M here: the module will be
+	  called sec-acpm.
+
 config MFD_SEC_I2C
 	tristate "Samsung Electronics S2MPA/S2MPS1X/S2MPU/S5M series PMICs"
 	depends on I2C=y

drivers/mfd/Makefile

@@ -230,6 +230,7 @@ obj-$(CONFIG_MFD_RK8XX_I2C)	+= rk8xx-i2c.o
 obj-$(CONFIG_MFD_RK8XX_SPI)	+= rk8xx-spi.o
 obj-$(CONFIG_MFD_RN5T618)	+= rn5t618.o
 obj-$(CONFIG_MFD_SEC_CORE)	+= sec-core.o sec-irq.o
+obj-$(CONFIG_MFD_SEC_ACPM)	+= sec-acpm.o
 obj-$(CONFIG_MFD_SEC_I2C)	+= sec-i2c.o
 obj-$(CONFIG_MFD_SYSCON)	+= syscon.o
 obj-$(CONFIG_MFD_LM3533)	+= lm3533-core.o lm3533-ctrlbank.o