diff options
author | Kuninori Morimoto <kuninori.morimoto.gx@renesas.com> | 2013-09-01 23:24:50 -0400 |
---|---|---|
committer | Mark Brown <broonie@linaro.org> | 2013-09-16 19:12:23 -0400 |
commit | fdf200290581150f7b69148abf6ca860684cbfbb (patch) | |
tree | 704fcc316e72e34ffc81dda2bf150ed1aa610bcb /drivers/base/regmap | |
parent | 272b98c6455f00884f0350f775c5342358ebb73f (diff) |
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>
Diffstat (limited to 'drivers/base/regmap')
-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) | |||
1369 | } | 1369 | } |
1370 | EXPORT_SYMBOL_GPL(regmap_field_write); | 1370 | EXPORT_SYMBOL_GPL(regmap_field_write); |
1371 | 1371 | ||
1372 | /** | ||
1373 | * regmap_field_update_bits(): Perform a read/modify/write cycle | ||
1374 | * on the register field | ||
1375 | * | ||
1376 | * @field: Register field to write to | ||
1377 | * @mask: Bitmask to change | ||
1378 | * @val: Value to be written | ||
1379 | * | ||
1380 | * A value of zero will be returned on success, a negative errno will | ||
1381 | * be returned in error cases. | ||
1382 | */ | ||
1383 | int regmap_field_update_bits(struct regmap_field *field, unsigned int mask, unsigned int val) | ||
1384 | { | ||
1385 | mask = (mask << field->shift) & field->mask; | ||
1386 | |||
1387 | return regmap_update_bits(field->regmap, field->reg, | ||
1388 | mask, val << field->shift); | ||
1389 | } | ||
1390 | EXPORT_SYMBOL_GPL(regmap_field_update_bits); | ||
1391 | |||
1372 | /* | 1392 | /* |
1373 | * regmap_bulk_write(): Write multiple registers to the device | 1393 | * regmap_bulk_write(): Write multiple registers to the device |
1374 | * | 1394 | * |