From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9266BC43218 for ; Tue, 11 Jun 2019 09:57:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6C1552063F for ; Tue, 11 Jun 2019 09:57:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728984AbfFKJ5X (ORCPT ); Tue, 11 Jun 2019 05:57:23 -0400 Received: from relay2-d.mail.gandi.net ([217.70.183.194]:39981 "EHLO relay2-d.mail.gandi.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727641AbfFKJ5W (ORCPT ); Tue, 11 Jun 2019 05:57:22 -0400 X-Originating-IP: 90.88.159.246 Received: from dell-desktop.home (aaubervilliers-681-1-40-246.w90-88.abo.wanadoo.fr [90.88.159.246]) (Authenticated sender: mylene.josserand@bootlin.com) by relay2-d.mail.gandi.net (Postfix) with ESMTPSA id 8856A40016; Tue, 11 Jun 2019 09:57:16 +0000 (UTC) From: =?UTF-8?q?Myl=C3=A8ne=20Josserand?= To: peda@axentia.se, jic23@kernel.org, knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, robh+dt@kernel.org, mark.rutland@arm.com Cc: linux-iio@vger.kernel.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, thomas.petazzoni@bootlin.com, mylene.josserand@bootlin.com Subject: [PATCH v1 0/3] iio: afe: rescale: Add INFO_PROCESSED support Date: Tue, 11 Jun 2019 11:56:56 +0200 Message-Id: <20190611095659.29845-1-mylene.josserand@bootlin.com> X-Mailer: git-send-email 2.11.0 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-iio-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Hello everyone, You will find a small series that add the support of processed values for iio-rescale driver. Thanks to that, it is possible to read processed values in sysfs instead of getting only raw and scale values. Here is an example for a 3v3 voltage reading: # cat /sys/bus/iio/devices/iio\:device1/in_voltage0_scale 3.791015625 # cat /sys/bus/iio/devices/iio\:device1/in_voltage0_raw 879 # cat /sys/bus/iio/devices/iio\:device1/in_voltage0_input 3332 It is also possible to read directly the processed values using iio-hwmon driver (see example in patch03): # cat /sys/class/hwmon/hwmon0/in1_input 3328 I seperated my series in 3 patches: - Patch01: Move the scale conversion into a function to prepare the support of IIO_CHAN_INFO_PROCESSED. - Patch02: Add the support of IIO_CHAN_INFO_PROCESSED. - Patch03: Add an example of the use of hwmon and voltage-divider nodes in device-tree. If you have any feedbacks on it, I will be pleased to read them! Best regards, Mylène Mylène Josserand (3): iio: afe: rescale: Move scale conversion to new function iio: afe: rescale: Add support of CHAN_INFO_PROCESSED dt-bindings: iio: afe: Add hwmon example .../bindings/iio/afe/voltage-divider.txt | 24 ++++++ drivers/iio/afe/iio-rescale.c | 96 ++++++++++++++++------ 2 files changed, 96 insertions(+), 24 deletions(-) -- 2.11.0