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regmap: add regmap_update_bits_base() 

Current regmap has many similar update functions like below,
but the difference is very few.
	regmap_update_bits()
	regmap_update_bits_async()
	regmap_update_bits_check()
	regmap_update_bits_check_async()
Furthermore, we can add *force* write option too in the future.

This patch adds new regmap_update_bits_base() which is feature
merged function. Above functions can be merged into it by macro.

Signed-off-by: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Kuninori Morimoto 2016-02-15 05:22:18 +00:00 committed by Mark Brown
parent 92e963f50f
commit 91d31b9f8e
2 changed files with 51 additions and 0 deletions
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40
drivers/base/regmap/regmap.c
View File

@ -2647,6 +2647,46 @@ static int _regmap_update_bits(struct regmap *map, unsigned int reg,
return ret; return ret;
} }
/**
* regmap_update_bits_base:
* Perform a read/modify/write cycle on the
* register map with change, async, force option
*
* @map: Register map to update
* @reg: Register to update
* @mask: Bitmask to change
* @val: New value for bitmask
* @change: Boolean indicating if a write was done
* @async: Boolean indicating asynchronously
* @force: Boolean indicating use force update
*
* if async was true,
* With most buses the read must be done synchronously so this is most
* useful for devices with a cache which do not need to interact with
* the hardware to determine the current register value.
*
* Returns zero for success, a negative number on error.
*/
int regmap_update_bits_base(struct regmap *map, unsigned int reg,
unsigned int mask, unsigned int val,
bool *change, bool async, bool force)
{
int ret;
map->lock(map->lock_arg);
map->async = async;
ret = _regmap_update_bits(map, reg, mask, val, change, force);
map->async = false;
map->unlock(map->lock_arg);
return ret;
}
EXPORT_SYMBOL_GPL(regmap_update_bits_base);
/** /**
* regmap_update_bits: Perform a read/modify/write cycle on the register map * regmap_update_bits: Perform a read/modify/write cycle on the register map
* *

11
include/linux/regmap.h
View File

@ -691,6 +691,9 @@ int regmap_raw_read(struct regmap *map, unsigned int reg,
void *val, size_t val_len); void *val, size_t val_len);
int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val, int regmap_bulk_read(struct regmap *map, unsigned int reg, void *val,
size_t val_count); size_t val_count);
int regmap_update_bits_base(struct regmap *map, unsigned int reg,
unsigned int mask, unsigned int val,
bool *change, bool async, bool force);
int regmap_update_bits(struct regmap *map, unsigned int reg, int regmap_update_bits(struct regmap *map, unsigned int reg,
unsigned int mask, unsigned int val); unsigned int mask, unsigned int val);
int regmap_write_bits(struct regmap *map, unsigned int reg, int regmap_write_bits(struct regmap *map, unsigned int reg,
@ -937,6 +940,14 @@ static inline int regmap_bulk_read(struct regmap *map, unsigned int reg,
return -EINVAL; return -EINVAL;
} }
static inline int regmap_update_bits_base(struct regmap *map, unsigned int reg,
unsigned int mask, unsigned int val,
bool *change, bool async, bool force)
{
WARN_ONCE(1, "regmap API is disabled");
return -EINVAL;
}
static inline int regmap_update_bits(struct regmap *map, unsigned int reg, static inline int regmap_update_bits(struct regmap *map, unsigned int reg,
unsigned int mask, unsigned int val) unsigned int mask, unsigned int val)
{ {