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author | Stephen Rothwell <sfr@canb.auug.org.au> | 2013-09-19 12:35:47 +1000 |
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committer | Stephen Rothwell <sfr@canb.auug.org.au> | 2013-09-19 12:35:47 +1000 |
commit | 8d465dd4e2fe6bf6d4266258227e21dc15f6cb78 (patch) | |
tree | 461702edf2950f506163c578ae4b361dfaa5a421 /drivers | |
parent | 57f900c4fde4608c875cd25d690b50b0b4c15f17 (diff) | |
parent | fdf200290581150f7b69148abf6ca860684cbfbb (diff) |
Merge remote-tracking branch 'regmap/for-next'
Diffstat (limited to 'drivers')
-rw-r--r-- | drivers/base/regmap/regmap.c | 20 |
1 files changed, 20 insertions, 0 deletions
diff --git a/drivers/base/regmap/regmap.c b/drivers/base/regmap/regmap.c index 7d689a15c500..285afa7470c0 100644 --- a/drivers/base/regmap/regmap.c +++ b/drivers/base/regmap/regmap.c @@ -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 * |