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Commit fdf20029 authored by Kuninori Morimoto's avatar Kuninori Morimoto Committed by Mark Brown
Browse files

regmap: add regmap_field_update_bits() 



Current regmap_field is supporting read/write functions.
This patch adds new update_bits function for it.

Signed-off-by: default avatarKuninori Morimoto <kuninori.morimoto.gx@renesas.com>
Signed-off-by: default avatarMark Brown <broonie@linaro.org>
parent 272b98c6

drivers/base/regmap/regmap.c

+20 −0
Original line number Diff line number Diff line
@@ -1369,6 +1369,26 @@ int regmap_field_write(struct regmap_field *field, unsigned int val) 
}

EXPORT_SYMBOL_GPL(regmap_field_write);



/**

 * regmap_field_update_bits():	Perform a read/modify/write cycle

 *                              on the register field

 *

 * @field: Register field to write to

 * @mask: Bitmask to change

 * @val: Value to be written

 *

 * A value of zero will be returned on success, a negative errno will

 * be returned in error cases.

 */

int regmap_field_update_bits(struct regmap_field *field, unsigned int mask, unsigned int val)

{

	mask = (mask << field->shift) & field->mask;



	return regmap_update_bits(field->regmap, field->reg,

				  mask, val << field->shift);

}

EXPORT_SYMBOL_GPL(regmap_field_update_bits);



/*

 * regmap_bulk_write(): Write multiple registers to the device

 *

include/linux/regmap.h

+2 −0
Original line number Diff line number Diff line
@@ -448,6 +448,8 @@ void devm_regmap_field_free(struct device *dev, struct regmap_field *field); 


int regmap_field_read(struct regmap_field *field, unsigned int *val);

int regmap_field_write(struct regmap_field *field, unsigned int val);

int regmap_field_update_bits(struct regmap_field *field,

			     unsigned int mask, unsigned int val);



/**

 * Description of an IRQ for the generic regmap irq_chip.