--- a/drivers/base/regmap/Kconfig
+++ b/drivers/base/regmap/Kconfig
@@ -3,19 +3,21 @@
 # subsystems should select the appropriate symbols.
 
 config REGMAP
-	default y if (REGMAP_I2C || REGMAP_SPI)
 	select LZO_COMPRESS
 	select LZO_DECOMPRESS
 	select IRQ_DOMAIN if REGMAP_IRQ
-	bool
+	tristate
 
 config REGMAP_I2C
+	select REGMAP
 	tristate
 
 config REGMAP_SPI
+	select REGMAP
 	tristate
 
 config REGMAP_MMIO
+	select REGMAP
 	tristate
 
 config REGMAP_IRQ
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -43,7 +43,7 @@ struct reg_default {
 	unsigned int def;
 };
 
-#ifdef CONFIG_REGMAP
+#if IS_ENABLED(CONFIG_REGMAP)
 
 enum regmap_endian {
 	/* Unspecified -> 0 -> Backwards compatible default */
--- a/drivers/base/regmap/Makefile
+++ b/drivers/base/regmap/Makefile
@@ -1,6 +1,8 @@
-obj-$(CONFIG_REGMAP) += regmap.o regcache.o
-obj-$(CONFIG_REGMAP) += regcache-rbtree.o regcache-lzo.o
-obj-$(CONFIG_DEBUG_FS) += regmap-debugfs.o
+regmap-core-objs = regmap.o regcache.o regcache-rbtree.o regcache-lzo.o
+ifdef CONFIG_DEBUG_FS
+regmap-core-objs += regmap-debugfs.o
+endif
+obj-$(CONFIG_REGMAP) += regmap-core.o
 obj-$(CONFIG_REGMAP_I2C) += regmap-i2c.o
 obj-$(CONFIG_REGMAP_SPI) += regmap-spi.o
 obj-$(CONFIG_REGMAP_MMIO) += regmap-mmio.o
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -13,6 +13,7 @@
 #include <linux/device.h>
 #include <linux/slab.h>
 #include <linux/export.h>
+#include <linux/module.h>
 #include <linux/mutex.h>
 #include <linux/err.h>
 #include <linux/rbtree.h>
@@ -1418,3 +1419,5 @@ static int __init regmap_initcall(void)
 	return 0;
 }
 postcore_initcall(regmap_initcall);
+
+MODULE_LICENSE("GPL");