From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail-wr0-f193.google.com ([209.85.128.193]:38739 "EHLO mail-wr0-f193.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753318AbeF1NtT (ORCPT ); Thu, 28 Jun 2018 09:49:19 -0400 Received: by mail-wr0-f193.google.com with SMTP id e18-v6so5608613wrs.5 for ; Thu, 28 Jun 2018 06:49:18 -0700 (PDT) From: Mathieu Othacehe To: linux-iio@vger.kernel.org, jonathan.cameron@huawei.com, pmeerw@pmeerw.net Cc: pierre-moana.levesque@parrot.com, Mathieu Othacehe Subject: [PATCH v3 1/2] iio: Add channel for Phase Date: Thu, 28 Jun 2018 15:49:11 +0200 Message-Id: <1530193752-13171-1-git-send-email-m.othacehe@gmail.com> Sender: linux-iio-owner@vger.kernel.org List-Id: linux-iio@vger.kernel.org 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 --- 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@vger.kernel.org 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@vger.kernel.org +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; -- 2.7.4