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regmap: Introduce regmap_get_max_register 

This patch introduces regmap_get_max_register() function which would be
used by the infrastructures like nvmem framework built on top of
regmap.

Signed-off-by: Srinivas Kandagatla <srinivas.kandagatla@linaro.org>
Signed-off-by: Mark Brown <broonie@kernel.org>
hifive-unleashed-5.1
Srinivas Kandagatla 2015-05-21 17:42:43 +01:00 committed by Mark Brown
parent b787f68c36
commit 668abc729f
2 changed files with 19 additions and 0 deletions
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12
drivers/base/regmap/regmap.c
View File

@ -2613,6 +2613,18 @@ int regmap_get_val_bytes(struct regmap *map)
}
EXPORT_SYMBOL_GPL(regmap_get_val_bytes);
/**
* regmap_get_max_register(): Report the max register value
*
* Report the max register value, mainly intended to for use by
* generic infrastructure built on top of regmap.
*/
int regmap_get_max_register(struct regmap *map)
{
return map->max_register ? map->max_register : -EINVAL;
}
EXPORT_SYMBOL_GPL(regmap_get_max_register);
int regmap_parse_val(struct regmap *map, const void *buf,
unsigned int *val)
{

7
include/linux/regmap.h
View File

@ -433,6 +433,7 @@ int regmap_update_bits_check_async(struct regmap *map, unsigned int reg,
unsigned int mask, unsigned int val,
bool *change);
int regmap_get_val_bytes(struct regmap *map);
int regmap_get_max_register(struct regmap *map);
int regmap_async_complete(struct regmap *map);
bool regmap_can_raw_write(struct regmap *map);
@ -676,6 +677,12 @@ static inline int regmap_get_val_bytes(struct regmap *map)
return -EINVAL;
}
static inline int regmap_get_max_register(struct regmap *map)
{
WARN_ONCE(1, "regmap API is disabled");
return -EINVAL;
}
static inline int regcache_sync(struct regmap *map)
{
WARN_ONCE(1, "regmap API is disabled");