tree 441b1f942d51a1729d10a3237c7a28853f482ff9
parent 3046365bb470f0ec2f7cf5cb07a8ee7e4b490103
author Srinivas Pandruvada <srinivas.pandruvada@linux.intel.com> 1398729060 +0100
committer Jonathan Cameron <jic23@kernel.org> 1398805532 +0100

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>