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| author | Jon Ringle <jringle@gridpoint.com> | 2015-10-01 19:38:07 +0300 |
|---|---|---|
| committer | Mark Brown <broonie@kernel.org> | 2015-10-06 18:12:34 +0300 |
| commit | 77792b11409c9270d98e604b4314b85ce886ac7d (patch) | |
| tree | 13f3a518de69bbbccbd410b26ff24f0379c28dfd /drivers/base/regmap/internal.h | |
| parent | 6ff33f3902c3b1c5d0db6b1e2c70b6d76fba357f (diff) | |
| download | linux-77792b11409c9270d98e604b4314b85ce886ac7d.tar.xz | |
regmap: Allow installing custom reg_update_bits function
This commit allows installing a custom reg_update_bits function for cases where
the hardware provides a mechanism to set or clear register bits without a
read/modify/write cycle. Such is the case with the Microchip ENCX24J600.
If a custom reg_update_bits function is provided, it will only be used against
volatile registers.
Signed-off-by: Jon Ringle <jringle@gridpoint.com>
Signed-off-by: Mark Brown <broonie@kernel.org>
Diffstat (limited to 'drivers/base/regmap/internal.h')
| -rw-r--r-- | drivers/base/regmap/internal.h | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/drivers/base/regmap/internal.h b/drivers/base/regmap/internal.h index cc557886ab23..628ad7ac078b 100644 --- a/drivers/base/regmap/internal.h +++ b/drivers/base/regmap/internal.h @@ -98,6 +98,8 @@ struct regmap { int (*reg_read)(void *context, unsigned int reg, unsigned int *val); int (*reg_write)(void *context, unsigned int reg, unsigned int val); + int (*reg_update_bits)(void *context, unsigned int reg, + unsigned int mask, unsigned int val); bool defer_caching; |