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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: Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> Signed-off-by: Mark Brown <broonie@linaro.org>
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@ -1369,6 +1369,26 @@ int regmap_field_write(struct regmap_field *field, unsigned int val)
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}
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EXPORT_SYMBOL_GPL(regmap_field_write);
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/**
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* regmap_field_update_bits(): Perform a read/modify/write cycle
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* on the register field
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*
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* @field: Register field to write to
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* @mask: Bitmask to change
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* @val: Value to be written
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*
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* A value of zero will be returned on success, a negative errno will
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* be returned in error cases.
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*/
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int regmap_field_update_bits(struct regmap_field *field, unsigned int mask, unsigned int val)
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{
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mask = (mask << field->shift) & field->mask;
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return regmap_update_bits(field->regmap, field->reg,
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mask, val << field->shift);
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}
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EXPORT_SYMBOL_GPL(regmap_field_update_bits);
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/*
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* regmap_bulk_write(): Write multiple registers to the device
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*
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@ -448,6 +448,8 @@ void devm_regmap_field_free(struct device *dev, struct regmap_field *field);
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int regmap_field_read(struct regmap_field *field, unsigned int *val);
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int regmap_field_write(struct regmap_field *field, unsigned int val);
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int regmap_field_update_bits(struct regmap_field *field,
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unsigned int mask, unsigned int val);
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/**
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* Description of an IRQ for the generic regmap irq_chip.
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