regmap: cache: Provide a get address of value operation
Provide a helper to do the size based index into a block of registers and
use it when reading a value.
Signed-off-by: Mark Brown <broonie@opensource.wolfsonmicro.com>
diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h
index 6d40935..95d46a5 100644
--- a/drivers/base/regmap/internal.h
+++ b/drivers/base/regmap/internal.h
@@ -189,6 +189,13 @@
unsigned int reg, unsigned int value);
int regcache_sync(struct regmap *map);
+static inline const void *regcache_get_val_addr(struct regmap *map,
+ const void *base,
+ unsigned int idx)
+{
+ return base + (map->cache_word_size * idx);
+}
+
unsigned int regcache_get_val(struct regmap *map, const void *base,
unsigned int idx);
bool regcache_set_val(struct regmap *map, void *base, unsigned int idx,
diff --git a/drivers/base/regmap/regcache.c b/drivers/base/regmap/regcache.c
index 0f4fb8b..229c804 100644
--- a/drivers/base/regmap/regcache.c
+++ b/drivers/base/regmap/regcache.c
@@ -458,8 +458,8 @@
/* Use device native format if possible */
if (map->format.parse_val)
- return map->format.parse_val(base +
- (map->cache_word_size * idx));
+ return map->format.parse_val(regcache_get_val_addr(map, base,
+ idx));
switch (map->cache_word_size) {
case 1: {