From patchwork Tue Jan 3 15:13:49 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Song, Hongyan" X-Patchwork-Id: 9494491 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 9B50D606A7 for ; Tue, 3 Jan 2017 06:51:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 8F21A24560 for ; Tue, 3 Jan 2017 06:51:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 83D9E269DA; Tue, 3 Jan 2017 06:51:24 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.0 required=2.0 tests=BAYES_00, DATE_IN_FUTURE_06_12, RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 011E124560 for ; Tue, 3 Jan 2017 06:51:24 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756528AbdACGvW (ORCPT ); Tue, 3 Jan 2017 01:51:22 -0500 Received: from mga14.intel.com ([192.55.52.115]:50546 "EHLO mga14.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756353AbdACGvV (ORCPT ); Tue, 3 Jan 2017 01:51:21 -0500 Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by fmsmga103.fm.intel.com with ESMTP; 02 Jan 2017 22:51:21 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.33,451,1477983600"; d="scan'208";a="1089229014" Received: from shsensorbuild.sh.intel.com ([10.239.133.27]) by fmsmga001.fm.intel.com with ESMTP; 02 Jan 2017 22:51:17 -0800 From: Song Hongyan To: linux-input@vger.kernel.org, linux-iio@vger.kernel.org Cc: jikos@kernel.org, jic23@kernel.org, srinivas.pandruvada@intel.com, Song Hongyan Subject: [PATCH 1/2] iio: Add support for linear accel Date: Tue, 3 Jan 2017 23:13:49 +0800 Message-Id: <1483456430-6980-1-git-send-email-hongyan.song@intel.com> X-Mailer: git-send-email 1.9.1 MIME-Version: 1.0 Sender: linux-input-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-input@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add new channel types support for linear accel sensor. Linear acceleration differs from a standard accelerometor, its value depends on standard accel sensor and gravity sensor. Conceptually, this three sensors have following relationship: linear acceleration = acceleration - acceleration due to gravity At rest, standard accelerometer displays 1g due to earth’s gravitational pull while a liner accelerometer will show 0g. More information can be found in: http://www.usb.org/developers/hidpage/HUTRR59_-_Usages_for_Wearables.pdf Signed-off-by: Song Hongyan --- Documentation/ABI/testing/sysfs-bus-iio | 10 ++++++++++ drivers/iio/industrialio-core.c | 1 + include/uapi/linux/iio/types.h | 1 + tools/iio/iio_event_monitor.c | 2 ++ 4 files changed, 14 insertions(+) diff --git a/Documentation/ABI/testing/sysfs-bus-iio b/Documentation/ABI/testing/sysfs-bus-iio index 60b7406..8091f3d 100644 --- a/Documentation/ABI/testing/sysfs-bus-iio +++ b/Documentation/ABI/testing/sysfs-bus-iio @@ -170,6 +170,16 @@ Description: Has all of the equivalent parameters as per voltageY. Units after application of scale and offset are m/s^2. +What: /sys/bus/iio/devices/iio:deviceX/in_linear_accel_x_raw +What: /sys/bus/iio/devices/iio:deviceX/in_linear_accel_y_raw +What: /sys/bus/iio/devices/iio:deviceX/in_linear_accel_z_raw +KernelVersion: 4.11 +Contact: linux-iio@vger.kernel.org +Description: + Linear Acceleration in direction x, y or z (may be arbitrarily assigned + but should match other such assignments on device). + Has all of the equivalent parameters as per voltageY. Units + after application of scale and offset are m/s^2. What: /sys/bus/iio/devices/iio:deviceX/in_gravity_x_raw What: /sys/bus/iio/devices/iio:deviceX/in_gravity_y_raw diff --git a/drivers/iio/industrialio-core.c b/drivers/iio/industrialio-core.c index 72fc96a..da78c26 100644 --- a/drivers/iio/industrialio-core.c +++ b/drivers/iio/industrialio-core.c @@ -82,6 +82,7 @@ struct bus_type iio_bus_type = { [IIO_UVINDEX] = "uvindex", [IIO_ELECTRICALCONDUCTIVITY] = "electricalconductivity", [IIO_GRAVITY] = "gravity", + [IIO_LINEAR_ACCEL] = "linearaccel", }; static const char * const iio_modifier_names[] = { diff --git a/include/uapi/linux/iio/types.h b/include/uapi/linux/iio/types.h index d3f7ba7..d6df101 100644 --- a/include/uapi/linux/iio/types.h +++ b/include/uapi/linux/iio/types.h @@ -41,6 +41,7 @@ enum iio_chan_type { IIO_UVINDEX, IIO_ELECTRICALCONDUCTIVITY, IIO_GRAVITY, + IIO_LINEAR_ACCEL, }; enum iio_modifier { diff --git a/tools/iio/iio_event_monitor.c b/tools/iio/iio_event_monitor.c index b61245e..116644a 100644 --- a/tools/iio/iio_event_monitor.c +++ b/tools/iio/iio_event_monitor.c @@ -58,6 +58,7 @@ [IIO_PH] = "ph", [IIO_UVINDEX] = "uvindex", [IIO_GRAVITY] = "gravity", + [IIO_LINEAR_ACCEL] = "linearaccel", }; 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_LINEAR_ACCEL: break; default: return false;