[PATCH] regmap: Keep regmap_write_bits()

[Mark Brown]

It turns out we do have a MFD driver using this.

Reported-by: Stephen Rothwell <sfr@xxxxxxxxxxxxxxxx>
Signed-off-by: Mark Brown <broonie@xxxxxxxxxx>
---
 drivers/base/regmap/regmap.c | 23 +++++++++++++++++++++++
 include/linux/regmap.h       |  9 +++++++++
 2 files changed, 32 insertions(+)

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 3fb04c36ae5e..c7d4a636778d 100644
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -2650,6 +2650,29 @@ int regmap_update_bits_base(struct regmap *map, unsigned int reg,
 }
 EXPORT_SYMBOL_GPL(regmap_update_bits_base);
 
+/**
+ * regmap_write_bits: Perform a read/modify/write cycle on the register map
+ *
+ * @map: Register map to update
+ * @reg: Register to update
+ * @mask: Bitmask to change
+ * @val: New value for bitmask
+ *
+ * Returns zero for success, a negative number on error.
+ */
+int regmap_write_bits(struct regmap *map, unsigned int reg,
+		      unsigned int mask, unsigned int val)
+{
+	int ret;
+
+	map->lock(map->lock_arg);
+	ret = _regmap_update_bits(map, reg, mask, val, NULL, true);
+	map->unlock(map->lock_arg);
+
+	return ret;
+}
+EXPORT_SYMBOL_GPL(regmap_write_bits);
+
 void regmap_async_complete_cb(struct regmap_async *async, int ret)
 {
 	struct regmap *map = async->map;
diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index 5315ff0adb85..e0960b3ff290 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -721,6 +721,8 @@ int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
 int regmap_update_bits_base(struct regmap *map, unsigned int reg,
 			    unsigned int mask, unsigned int val,
 			    bool *change, bool async, bool force);
+int regmap_write_bits(struct regmap *map, unsigned int reg,
+		       unsigned int mask, unsigned int val);
 int regmap_get_val_bytes(struct regmap *map);
 int regmap_get_max_register(struct regmap *map);
 int regmap_get_reg_stride(struct regmap *map);
@@ -959,6 +961,13 @@ static inline int regmap_update_bits_base(struct regmap *map, unsigned int reg,
 	return -EINVAL;
 }
 
+static inline int regmap_write_bits(struct regmap *map, unsigned int reg,
+				     unsigned int mask, unsigned int val)
+{
+	WARN_ONCE(1, "regmap API is disabled");
+	return -EINVAL;
+}
+
 static inline int regmap_field_update_bits_base(struct regmap_field *field,
 					unsigned int mask, unsigned int val,
 					bool *change, bool async, bool force)
-- 
2.7.0