rM2: Copy the rM2 max77818 driver

Copy the rM2 zero-sugar branch (https://github.com/reMarkable/linux/tree/zero-sugar) to the new kernel. Signed-off-by: Alistair Francis <alistair@alistair23.me>
alistair23 · Feb 20, 2023 · 5f1579e · 5f1579e
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commit 5f1579e
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diff --git a/drivers/mfd/Kconfig b/drivers/mfd/Kconfig
@@ -957,6 +957,17 @@ config MFD_MT6370
 	  This driver can also be built as a module. If so, the module
 	  will be called "mt6370".
 
+config MFD_MAX77818
+	bool "Maxim Semiconductor MAX77818 REGULATOR/CHARGER/FUEL-GAUGE Support"
+	depends on I2C=y
+	select BATTERY_MAX77818_UTILS
+	select MFD_CORE
+	select IRW_DOMAIN
+	help
+		Say yes here to add support for Maxime Semiconductor MAX77818 device.
+		The device has a regulator part, a charger part and a fuel-gauge part
+		which may be enabled as required (power management devices).
+
 config MFD_MT6397
 	tristate "MediaTek MT6397 PMIC Support"
 	select MFD_CORE

diff --git a/drivers/mfd/Makefile b/drivers/mfd/Makefile
@@ -169,6 +169,7 @@ max8925-objs			:= max8925-core.o max8925-i2c.o
 obj-$(CONFIG_MFD_MAX8925)	+= max8925.o
 obj-$(CONFIG_MFD_MAX8997)	+= max8997.o max8997-irq.o
 obj-$(CONFIG_MFD_MAX8998)	+= max8998.o max8998-irq.o
+obj-$(CONFIG_MFD_MAX77818)	+= max77818.o
 
 obj-$(CONFIG_MFD_MP2629)	+= mp2629.o