[PATCH 1/2] staging:iio: filter description - low pass 3db frequency.

[Jonathan Cameron <jic23@cam.ac.uk>]

Introduce the first data filtering related parameter.
For now we are ignoring the filter type and merely specifying its
approximate (I read them off tiny graphs) 3db point.

Signed-off-by: Jonathan Cameron <jic23@cam.ac.uk>
---
 drivers/staging/iio/iio.h               |    2 ++
 drivers/staging/iio/industrialio-core.c |    2 ++
 2 files changed, 4 insertions(+), 0 deletions(-)

diff --git a/drivers/staging/iio/iio.h b/drivers/staging/iio/iio.h
index 2a6c673..3c39e1c 100644
--- a/drivers/staging/iio/iio.h
+++ b/drivers/staging/iio/iio.h
@@ -79,6 +79,8 @@ enum iio_chan_info_enum {
 	IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW_SEPARATE,
 	IIO_CHAN_INFO_AVERAGE_RAW_SHARED,
 	IIO_CHAN_INFO_AVERAGE_RAW_SEPARATE,
+	IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED,
+	IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SEPARATE,
 };
 
 enum iio_endian {
diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c
index 647a405..d2af50a 100644
--- a/drivers/staging/iio/industrialio-core.c
+++ b/drivers/staging/iio/industrialio-core.c
@@ -86,6 +86,8 @@ static const char * const iio_chan_info_postfix[] = {
 	[IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW_SHARED/2]
 	= "quadrature_correction_raw",
 	[IIO_CHAN_INFO_AVERAGE_RAW_SHARED/2] = "mean_raw",
+	[IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED/2]
+	= "filter_low_pass_3db_frequency",
 };
 
 /**
-- 
1.7.3.4