regmap: add regmap_fields_force_write()

regmap_fields_force_write() is similar to regmap_fields_write(),
but regmap_fields_force_write() write data to register even though
it is same value.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index d93bb9a8ab98cd6864dabe925f20f77ea45e3940..dd63bcbbf8a53380be9d58f03d4e259674070d99 100644 (file)
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -1624,6 +1624,18 @@ int regmap_fields_write(struct regmap_field *field, unsigned int id,
 }
 EXPORT_SYMBOL_GPL(regmap_fields_write);
 
+int regmap_fields_force_write(struct regmap_field *field, unsigned int id,
+                       unsigned int val)
+{
+       if (id >= field->id_size)
+               return -EINVAL;
+
+       return regmap_write_bits(field->regmap,
+                                 field->reg + (field->id_offset * id),
+                                 field->mask, val << field->shift);
+}
+EXPORT_SYMBOL_GPL(regmap_fields_force_write);
+
 /**
  * regmap_fields_update_bits():        Perform a read/modify/write cycle
  *                              on the register field

diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index e4b9ad4f05ef3d6c04d2907015f954e2da32452c..519c96231a91ec729aa947c35b79f915de915977 100644 (file)
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -505,6 +505,8 @@ int regmap_field_update_bits(struct regmap_field *field,
 
 int regmap_fields_write(struct regmap_field *field, unsigned int id,
                        unsigned int val);
+int regmap_fields_force_write(struct regmap_field *field, unsigned int id,
+                       unsigned int val);
 int regmap_fields_read(struct regmap_field *field, unsigned int id,
                       unsigned int *val);
 int regmap_fields_update_bits(struct regmap_field *field,  unsigned int id,