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regcache: Add support for sorting defaults arrays

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The defaults array in regcache must be sorted into ascending register
address order, because binary search is used to locate values in
the array. Add a helper to sort the register defaults array which
can be useful for systems that dynamically create a defaults array
based on external information.

Signed-off-by: Charles Keepax <ckeepax@opensource.cirrus.com>
Reviewed-by: Pierre-Louis Bossart <pierre-louis.bossart@linux.dev>
Link: https://patch.msgid.link/20250217140159.2288784-2-ckeepax@opensource.cirrus.com
Signed-off-by: Mark Brown <broonie@kernel.org>
This commit is contained in:
Charles Keepax
2025-02-17 14:01:56 +00:00
committed by Mark Brown
parent a54a659f5c
commit fd80df352b
2 changed files with 38 additions and 0 deletions
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7
include/linux/regmap.h
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@@ -1352,6 +1352,7 @@ bool regmap_can_raw_write(struct regmap *map);
size_t regmap_get_raw_read_max(struct regmap *map);
size_t regmap_get_raw_write_max(struct regmap *map);
void regcache_sort_defaults(struct reg_default *defaults, unsigned int ndefaults);
int regcache_sync(struct regmap *map);
int regcache_sync_region(struct regmap *map, unsigned int min,
unsigned int max);
@@ -2043,6 +2044,12 @@ static inline bool regmap_might_sleep(struct regmap *map)
return true;
}
static inline void regcache_sort_defaults(struct reg_default *defaults,
unsigned int ndefaults)
{
WARN_ONCE(1, "regmap API is disabled");
}
static inline int regcache_sync(struct regmap *map)
{
WARN_ONCE(1, "regmap API is disabled");