regmap: Add bus reg_update_bits() support

Add reg_update_bits() support in case some platforms use a special method
to update bits of registers.

Signed-off-by: Baolin Wang <baolin.wang7@gmail.com>
Link: https://lore.kernel.org/r/df32fd0529957d1e7e26ba1465723f16cfbe92c8.1586757922.git.baolin.wang7@gmail.com
Signed-off-by: Mark Brown <broonie@kernel.org>

diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c
index 59f911e577192257667ab394038fa2ff56f3167f..553d92aa0c6868be64b36eebcf79cefa71b3d0b1 100644 (file)
--- a/drivers/base/regmap/regmap.c
+++ b/drivers/base/regmap/regmap.c
@@ -827,6 +827,7 @@ struct regmap *__regmap_init(struct device *dev,
        } else if (!bus->read || !bus->write) {
                map->reg_read = _regmap_bus_reg_read;
                map->reg_write = _regmap_bus_reg_write;
+               map->reg_update_bits = bus->reg_update_bits;
 
                map->defer_caching = false;
                goto skip_format_initialization;