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regmap: cache: Provide a get address of value operation

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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>
This commit is contained in:
Mark Brown 2013-03-13 19:29:36 +00:00
parent 0c7ed8563a
commit 8817796b75
2 changed files with 9 additions and 2 deletions
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7
drivers/base/regmap/internal.h
View file

@ -189,6 +189,13 @@ int regcache_write(struct regmap *map,
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,

4
drivers/base/regmap/regcache.c
View file

@ -458,8 +458,8 @@ unsigned int regcache_get_val(struct regmap *map, const void *base,
/* 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: {