On 13/05/15 11:26, Martin Fuzzey wrote:
> Add a high pass filter attribute for measurements
> (like the existing low pass)
>
> Also add both high and low pass attibutes for events.
>
> Signed-off-by: Martin Fuzzey <mfuzzey@xxxxxxxxxxx>
Applied, thanks (typo above corrected though ;)
> ---
> Documentation/ABI/testing/sysfs-bus-iio | 30 ++++++++++++++++++++++++++++++
> drivers/iio/industrialio-core.c | 2 ++
> drivers/iio/industrialio-event.c | 2 ++
> include/linux/iio/iio.h | 1 +
> include/linux/iio/types.h | 2 ++
> 5 files changed, 37 insertions(+)
>
> diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
> index 3befcb1..ef1f11e 100644
> --- a/Documentation/ABI/testing/sysfs-bus-iio
> +++ b/Documentation/ABI/testing/sysfs-bus-iio
> @@ -420,6 +420,16 @@ Description:
> to the underlying data channel, then this parameter
> gives the 3dB frequency of the filter in Hz.
>
> +What: /sys/.../in_accel_filter_high_pass_3db_frequency
> +What: /sys/.../in_anglvel_filter_high_pass_3db_frequency
> +What: /sys/.../in_magn_filter_high_pass_3db_frequency
> +KernelVersion: 4.2
> +Contact: linux-iio@xxxxxxxxxxxxxxx
> +Description:
> + If a known or controllable high pass filter is applied
> + to the underlying data channel, then this parameter
> + gives the 3dB frequency of the filter in Hz.
> +
> What: /sys/bus/iio/devices/iio:deviceX/out_voltageY_raw
> What: /sys/bus/iio/devices/iio:deviceX/out_altvoltageY_raw
> KernelVersion: 2.6.37
> @@ -880,6 +890,26 @@ Description:
> met before an event is generated. If direction is not
> specified then this period applies to both directions.
>
> +What: /sys/.../events/in_accel_thresh_rising_low_pass_filter_3db
> +What: /sys/.../events/in_anglvel_thresh_rising_low_pass_filter_3db
> +What: /sys/.../events/in_magn_thresh_rising_low_pass_filter_3db
> +KernelVersion: 4.2
> +Contact: linux-iio@xxxxxxxxxxxxxxx
> +Description:
> + If a low pass filter can be applied to the event generation
> + this property gives its 3db frequency in Hz.
> + A value of zero disables the filter.
> +
> +What: /sys/.../events/in_accel_thresh_rising_high_pass_filter_3db
> +What: /sys/.../events/in_anglvel_thresh_rising_high_pass_filter_3db
> +What: /sys/.../events/in_magn_thresh_rising_high_pass_filter_3db
> +KernelVersion: 4.2
> +Contact: linux-iio@xxxxxxxxxxxxxxx
> +Description:
> + If a high pass filter can be applied to the event generation
> + this property gives its 3db frequency in Hz.
> + A value of zero disables the filter.
> +
> What: /sys/.../events/in_activity_still_thresh_rising_en
> What: /sys/.../events/in_activity_still_thresh_falling_en
> What: /sys/.../events/in_activity_walking_thresh_rising_en
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index 4df97f6..6c8730e 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -117,6 +117,8 @@ static const char * const iio_chan_info_postfix[] = {
> [IIO_CHAN_INFO_AVERAGE_RAW] = "mean_raw",
> [IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY]
> = "filter_low_pass_3db_frequency",
> + [IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY]
> + = "filter_high_pass_3db_frequency",
> [IIO_CHAN_INFO_SAMP_FREQ] = "sampling_frequency",
> [IIO_CHAN_INFO_FREQUENCY] = "frequency",
> [IIO_CHAN_INFO_PHASE] = "phase",
> diff --git a/drivers/iio/industrialio-event.c b/drivers/iio/industrialio-event.c
> index a99692b..894d813 100644
> --- a/drivers/iio/industrialio-event.c
> +++ b/drivers/iio/industrialio-event.c
> @@ -211,6 +211,8 @@ static const char * const iio_ev_info_text[] = {
> [IIO_EV_INFO_VALUE] = "value",
> [IIO_EV_INFO_HYSTERESIS] = "hysteresis",
> [IIO_EV_INFO_PERIOD] = "period",
> + [IIO_EV_INFO_HIGH_PASS_FILTER_3DB] = "high_pass_filter_3db",
> + [IIO_EV_INFO_LOW_PASS_FILTER_3DB] = "low_pass_filter_3db",
> };
>
> static enum iio_event_direction iio_ev_attr_dir(struct iio_dev_attr *attr)
> diff --git a/include/linux/iio/iio.h b/include/linux/iio/iio.h
> index d86b753..1d6c15e 100644
> --- a/include/linux/iio/iio.h
> +++ b/include/linux/iio/iio.h
> @@ -32,6 +32,7 @@ enum iio_chan_info_enum {
> IIO_CHAN_INFO_QUADRATURE_CORRECTION_RAW,
> IIO_CHAN_INFO_AVERAGE_RAW,
> IIO_CHAN_INFO_LOW_PASS_FILTER_3DB_FREQUENCY,
> + IIO_CHAN_INFO_HIGH_PASS_FILTER_3DB_FREQUENCY,
> IIO_CHAN_INFO_SAMP_FREQ,
> IIO_CHAN_INFO_FREQUENCY,
> IIO_CHAN_INFO_PHASE,
> diff --git a/include/linux/iio/types.h b/include/linux/iio/types.h
> index 942b6de..32b5795 100644
> --- a/include/linux/iio/types.h
> +++ b/include/linux/iio/types.h
> @@ -17,6 +17,8 @@ enum iio_event_info {
> IIO_EV_INFO_VALUE,
> IIO_EV_INFO_HYSTERESIS,
> IIO_EV_INFO_PERIOD,
> + IIO_EV_INFO_HIGH_PASS_FILTER_3DB,
> + IIO_EV_INFO_LOW_PASS_FILTER_3DB,
> };
>
> #define IIO_VAL_INT 1
>
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