diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h
index 5ab3fefa4b05..7e14d5a6f53e 100644
--- a/drivers/base/regmap/internal.h
+++ b/drivers/base/regmap/internal.h
@@ -46,6 +46,9 @@ struct regmap {
 	bool (*readable_reg)(struct device *dev, unsigned int reg);
 	bool (*volatile_reg)(struct device *dev, unsigned int reg);
 	bool (*precious_reg)(struct device *dev, unsigned int reg);
+
+	u8 read_flag_mask;
+	u8 write_flag_mask;
 };
 
 bool regmap_writeable(struct regmap *map, unsigned int reg);
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 86b184776199..e7adfe70e425 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -147,6 +147,13 @@ struct regmap *regmap_init(struct device *dev,
 	map->volatile_reg = config->volatile_reg;
 	map->precious_reg = config->precious_reg;
 
+	if (config->read_flag_mask || config->write_flag_mask) {
+		map->read_flag_mask = config->read_flag_mask;
+		map->write_flag_mask = config->write_flag_mask;
+	} else {
+		map->read_flag_mask = bus->read_flag_mask;
+	}
+
 	switch (config->reg_bits) {
 	case 4:
 		switch (config->val_bits) {
@@ -226,6 +233,7 @@ EXPORT_SYMBOL_GPL(regmap_exit);
 static int _regmap_raw_write(struct regmap *map, unsigned int reg,
 			     const void *val, size_t val_len)
 {
+	u8 *u8 = map->work_buf;
 	void *buf;
 	int ret = -ENOTSUPP;
 	size_t len;
@@ -239,6 +247,8 @@ static int _regmap_raw_write(struct regmap *map, unsigned int reg,
 
 	map->format.format_reg(map->work_buf, reg);
 
+	u8[0] |= map->write_flag_mask;
+
 	trace_regmap_hw_write_start(map->dev, reg,
 				    val_len / map->format.val_bytes);
 
@@ -366,13 +376,12 @@ static int _regmap_raw_read(struct regmap *map, unsigned int reg, void *val,
 	map->format.format_reg(map->work_buf, reg);
 
 	/*
-	 * Some buses flag reads by setting the high bits in the
+	 * Some buses or devices flag reads by setting the high bits in the
 	 * register addresss; since it's always the high bits for all
 	 * current formats we can do this here rather than in
 	 * formatting.  This may break if we get interesting formats.
 	 */
-	if (map->bus->read_flag_mask)
-		u8[0] |= map->bus->read_flag_mask;
+	u8[0] |= map->read_flag_mask;
 
 	trace_regmap_hw_read_start(map->dev, reg,
 				   val_len / map->format.val_bytes);
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 9438a89e1573..18d4afaac166 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -53,6 +53,12 @@ struct reg_default {
  * @reg_defaults: Power on reset values for registers (for use with
  *                register cache support).
  * @num_reg_defaults: Number of elements in reg_defaults.
+ *
+ * @read_flag_mask: Mask to be set in the top byte of the register when doing
+ *                  a read.
+ * @write_flag_mask: Mask to be set in the top byte of the register when doing
+ *                   a write. If both read_flag_mask and write_flag_mask are
+ *                   empty the regmap_bus default masks are used.
  */
 struct regmap_config {
 	int reg_bits;
@@ -66,6 +72,9 @@ struct regmap_config {
 	unsigned int max_register;
 	struct reg_default *reg_defaults;
 	int num_reg_defaults;
+
+	u8 read_flag_mask;
+	u8 write_flag_mask;
 };
 
 typedef int (*regmap_hw_write)(struct device *dev, const void *data,