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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 /drivers/iio/iio_core.h | |
| parent | 3046365bb470f0ec2f7cf5cb07a8ee7e4b490103 (diff) | |
| download | linux-9fbfb4b37ed23f71aa9484484266381c6c6964cb.tar.bz2 | |
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 'drivers/iio/iio_core.h')
| -rw-r--r-- | drivers/iio/iio_core.h | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/iio/iio_core.h b/drivers/iio/iio_core.h index f6db6af36ba6..5f0ea77fe717 100644 --- a/drivers/iio/iio_core.h +++ b/drivers/iio/iio_core.h @@ -35,7 +35,7 @@ int __iio_add_chan_devattr(const char *postfix, struct list_head *attr_list); void iio_free_chan_devattr_list(struct list_head *attr_list); -ssize_t iio_format_value(char *buf, unsigned int type, int val, int val2); +ssize_t iio_format_value(char *buf, unsigned int type, int size, int *vals); /* Event interface flags */ #define IIO_BUSY_BIT_POS 1 |