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| author |   Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> | 2014-04-29 00:51:00 +0100 |
|---|---|---|
| committer |   Jonathan Cameron <jic23@kernel.org> | 2014-04-29 22:05:32 +0100 |
| commit | 9fbfb4b37ed23f71aa9484484266381c6c6964cb (patch) | |
| tree | 441b1f942d51a1729d10a3237c7a28853f482ff9 /include/linux/iio/types.h | |
| parent | devres: introduce API "devm_kmemdup (diff) | |
| download | linux-dev-9fbfb4b37ed23f71aa9484484266381c6c6964cb.tar.xz linux-dev-9fbfb4b37ed23f71aa9484484266381c6c6964cb.zip | |
IIO: core: Introduce read_raw_multi
This callback is introduced to overcome some limitations of existing
read_raw callback. The functionality of both existing read_raw and
read_raw_multi is similar, both are used to request values from the
device. The current read_raw callback allows only two return values.
The new read_raw_multi allows returning multiple values. Instead of
passing just address of val and val2, it passes length and pointer
to values. Depending on the type and length of passed buffer, iio
client drivers can return multiple values.
Signed-off-by: Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com>
Signed-off-by: Jonathan Cameron <jic23@kernel.org>
Diffstat (limited to 'include/linux/iio/types.h')
| -rw-r--r-- | include/linux/iio/types.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h index 084d882fe01b..a13c2241abce 100644 --- a/include/linux/iio/types.h +++ b/include/linux/iio/types.h @@ -79,6 +79,7 @@ enum iio_event_direction { #define IIO_VAL_INT_PLUS_MICRO 2 #define IIO_VAL_INT_PLUS_NANO 3 #define IIO_VAL_INT_PLUS_MICRO_DB 4 +#define IIO_VAL_INT_MULTIPLE 5 #define IIO_VAL_FRACTIONAL 10 #define IIO_VAL_FRACTIONAL_LOG2 11 |