regmap: Implementation for regmap_multi_reg_write

This is the implementation of regmap_multi_reg_write()

There is a new capability 'can_multi_write' that device drivers
must set in order to use this multi reg write mode.

This replaces the first definition, which just defined the API.

Signed-off-by: Anthony Olech <anthony.olech.opensource@diasemi.com>
Signed-off-by: Mark Brown <broonie@linaro.org>

1 files changed, 4 insertions, 0 deletions

diff --git a/include/linux/regmap.h b/include/linux/regmap.h
index ca2272fbd014..220aec660064 100644
--- a/include/linux/regmap.h
+++ b/include/linux/regmap.h
@@ -164,6 +164,9 @@ typedef void (*regmap_unlock)(void *);
  * @use_single_rw: If set, converts the bulk read and write operations into
  *		    a series of single read and write operations. This is useful
  *		    for device that does not support bulk read and write.
+ * @can_multi_write: If set, the device supports the multi write mode of bulk
+ *                   write operations, if clear multi write requests will be
+ *                   split into individual write operations
  *
  * @cache_type: The actual cache type.
  * @reg_defaults_raw: Power on reset values for registers (for use with
@@ -215,6 +218,7 @@ struct regmap_config {
 	u8 write_flag_mask;
 
 	bool use_single_rw;
+	bool can_multi_write;
 
 	enum regmap_endian reg_format_endian;
 	enum regmap_endian val_format_endian;