On Tue, 19 Jun 2018 12:16:48 +0200
Mathieu Othacehe <m.othacehe@xxxxxxxxx> wrote:
> Add new channel type support for phase.
>
> This channel may be used by Time-of-flight sensors to express the
> phase difference between emitted and received signals. Those sensor
> will then use the phase shift of return signals to approximate the
> distance to objects.
>
> Signed-off-by: Mathieu Othacehe <m.othacehe@xxxxxxxxx>
Looks good. Will pick up once the user is ready.
Jonathan
> ---
> Documentation/ABI/testing/sysfs-bus-iio | 7 +++++++
> drivers/iio/industrialio-core.c | 1 +
> include/uapi/linux/iio/types.h | 1 +
> tools/iio/iio_event_monitor.c | 2 ++
> 4 files changed, 11 insertions(+)
>
> diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio
> index 731146c..e0ff2b7 100644
> --- a/Documentation/ABI/testing/sysfs-bus-iio
> +++ b/Documentation/ABI/testing/sysfs-bus-iio
> @@ -1663,3 +1663,10 @@ KernelVersion: 4.12
> Contact: linux-iio@xxxxxxxxxxxxxxx
> Description:
> Raw counter device counters direction for channel Y.
> +
> +What: /sys/bus/iio/devices/iio:deviceX/in_phaseY_raw
> +KernelVersion: 4.18
> +Contact: linux-iio@xxxxxxxxxxxxxxx
> +Description:
> + Raw (unscaled) phase difference reading from channel Y
> + that can be processed to radians.
> \ No newline at end of file
> diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c
> index 19bdf3d..34333de 100644
> --- a/drivers/iio/industrialio-core.c
> +++ b/drivers/iio/industrialio-core.c
> @@ -85,6 +85,7 @@ static const char * const iio_chan_type_name_spec[] = {
> [IIO_COUNT] = "count",
> [IIO_INDEX] = "index",
> [IIO_GRAVITY] = "gravity",
> + [IIO_PHASE] = "phase",
> };
>
> static const char * const iio_modifier_names[] = {
> diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h
> index 4213cdf..6252a0b 100644
> --- a/include/uapi/linux/iio/types.h
> +++ b/include/uapi/linux/iio/types.h
> @@ -44,6 +44,7 @@ enum iio_chan_type {
> IIO_COUNT,
> IIO_INDEX,
> IIO_GRAVITY,
> + IIO_PHASE,
> };
>
> enum iio_modifier {
> diff --git a/tools/iio/iio_event_monitor.c b/tools/iio/iio_event_monitor.c
> index b61245e..34190f4 100644
> --- a/tools/iio/iio_event_monitor.c
> +++ b/tools/iio/iio_event_monitor.c
> @@ -58,6 +58,7 @@ static const char * const iio_chan_type_name_spec[] = {
> [IIO_PH] = "ph",
> [IIO_UVINDEX] = "uvindex",
> [IIO_GRAVITY] = "gravity",
> + [IIO_PHASE] = "phase",
> };
>
> static const char * const iio_ev_type_text[] = {
> @@ -151,6 +152,7 @@ static bool event_is_known(struct iio_event_data *event)
> case IIO_PH:
> case IIO_UVINDEX:
> case IIO_GRAVITY:
> + case IIO_PHASE:
> break;
> default:
> return false;
--
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