Unverified Commit a6d99022 authored by Michael Walle's avatar Michael Walle Committed by Mark Brown
Browse files

regmap: add regmap_might_sleep() 



With the dawn of MMIO gpio-regmap users, it is desirable to let
gpio-regmap ask the regmap if it might sleep during an access so
it can pass that information to gpiochip. Add a new regmap_might_sleep()
to query the regmap.

Signed-off-by: default avatarMichael Walle <michael@walle.cc>
Link: https://lore.kernel.org/r/20221121150843.1562603-1-michael@walle.cc


Signed-off-by: default avatarMark Brown <broonie@kernel.org>
parent 9abf2313

drivers/base/regmap/regmap.c

+13 −0
Original line number Diff line number Diff line
@@ -3486,6 +3486,19 @@ int regmap_get_reg_stride(struct regmap *map) 
}

EXPORT_SYMBOL_GPL(regmap_get_reg_stride);



/**

 * regmap_might_sleep() - Returns whether a regmap access might sleep.

 *

 * @map: Register map to operate on.

 *

 * Returns true if an access to the register might sleep, else false.

 */

bool regmap_might_sleep(struct regmap *map)

{

	return map->can_sleep;

}

EXPORT_SYMBOL_GPL(regmap_might_sleep);



int regmap_parse_val(struct regmap *map, const void *buf,

			unsigned int *val)

{

include/linux/regmap.h

+7 −0
Original line number Diff line number Diff line
@@ -1219,6 +1219,7 @@ static inline int regmap_write_bits(struct regmap *map, unsigned int reg, 
int regmap_get_val_bytes(struct regmap *map);

int regmap_get_max_register(struct regmap *map);

int regmap_get_reg_stride(struct regmap *map);

bool regmap_might_sleep(struct regmap *map);

int regmap_async_complete(struct regmap *map);

bool regmap_can_raw_write(struct regmap *map);

size_t regmap_get_raw_read_max(struct regmap *map);
@@ -1905,6 +1906,12 @@ static inline int regmap_get_reg_stride(struct regmap *map) 
	return -EINVAL;

}



static inline bool regmap_might_sleep(struct regmap *map)

{

	WARN_ONCE(1, "regmap API is disabled");

	return true;

}



static inline int regcache_sync(struct regmap *map)

{

	WARN_ONCE(1, "regmap API is disabled");