From df94aba81f81c50ff3f4774c121217b03aaf4f27 Mon Sep 17 00:00:00 2001 From: Jonathan Cameron Date: Sun, 27 Nov 2011 11:39:12 +0000 Subject: [PATCH] staging:iio: filter description - low pass 3db frequency. 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 Signed-off-by: Greg Kroah-Hartman --- drivers/staging/iio/iio.h | 7 +++++++ drivers/staging/iio/industrialio-core.c | 2 ++ 2 files changed, 9 insertions(+) diff --git a/drivers/staging/iio/iio.h b/drivers/staging/iio/iio.h index 66c2604c92c4..4aed915e9060 100644 --- a/drivers/staging/iio/iio.h +++ b/drivers/staging/iio/iio.h @@ -35,6 +35,7 @@ enum iio_chan_info_enum { IIO_CHAN_INFO_PEAK_SCALE, IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW, IIO_CHAN_INFO_AVERAGE_RAW, + IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY, }; #define IIO_CHAN_INFO_SHARED_BIT(type) BIT(type*2) @@ -74,6 +75,12 @@ enum iio_chan_info_enum { IIO_CHAN_INFO_SEPARATE_BIT(IIO_CHAN_INFO_AVERAGE_RAW) #define IIO_CHAN_INFO_AVERAGE_RAW_SHARED_BIT \ IIO_CHAN_INFO_SHARED_BIT(IIO_CHAN_INFO_AVERAGE_RAW) +#define IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SHARED_BIT \ + IIO_CHAN_INFO_SHARED_BIT( \ + IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY) +#define IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY_SEPARATE_BIT \ + IIO_CHAN_INFO_SEPARATE_BIT( \ + IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY) enum iio_endian { IIO_CPU, diff --git a/drivers/staging/iio/industrialio-core.c b/drivers/staging/iio/industrialio-core.c index 0b671663b55d..55c0b4880f8e 100644 --- a/drivers/staging/iio/industrialio-core.c +++ b/drivers/staging/iio/industrialio-core.c @@ -85,6 +85,8 @@ static const char * const iio_chan_info_postfix[] = { [IIO_CHAN_INFO_PEAK_SCALE] = "peak_scale", [IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW] = "quadrature_correction_raw", [IIO_CHAN_INFO_AVERAGE_RAW] = "mean_raw", + [IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY] + = "filter_low_pass_3db_frequency", }; /** -- 2.20.1