From patchwork Wed Sep 22 10:39:21 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Roan van Dijk X-Patchwork-Id: 12510133 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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,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 8D147C43217 for ; Wed, 22 Sep 2021 10:40:16 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7B1366135D for ; Wed, 22 Sep 2021 10:40:16 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235111AbhIVKlo (ORCPT ); Wed, 22 Sep 2021 06:41:44 -0400 Received: from protonic.xs4all.nl ([83.163.252.89]:32844 "EHLO protonic.xs4all.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235325AbhIVKlM (ORCPT ); Wed, 22 Sep 2021 06:41:12 -0400 Received: from ert768.prtnl (ert768.prtnl [192.168.224.11]) by sparta.prtnl (Postfix) with ESMTP id 1E0E544A024E; Wed, 22 Sep 2021 12:39:36 +0200 (CEST) From: Roan van Dijk To: Jonathan Cameron Cc: Rob Herring , Tomasz Duszynski , linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, david@protonic.nl, Lars-Peter Clausen , Roan van Dijk Subject: [PATCH v3 0/4] iio: chemical: Add support for Sensirion SCD4x CO2 sensor Date: Wed, 22 Sep 2021 12:39:21 +0200 Message-Id: <20210922103925.2742362-1-roan@protonic.nl> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org This series adds support for the Sensirion SCD4x sensor. The driver supports continuous reads of temperature, relative humdity and CO2 concentration. There is an interval of 5 seconds between readings. During this interval the drivers checks if the sensor has new data available. The driver is based on the scd30 driver. However, The scd4x has become too different to just expand the scd30 driver. I made a new driver instead of expanding the scd30 driver. I hope I made the right choice by doing so? Changes since v3: scd4x.c - Change read and write_and_fetch function parameter. CRC byte is now hidden inside the function. - Fix minor style issues - Add calibration_forced_value_available attribute to the driver - Remove including BUFFER_TRIGGERED - Change calibbias to raw ADC readings rather than converting it to milli degrees C. Documentation: - Change description of driver attributes - Add calibration_forced_value_available documentation Changes since v2: scd4x.c: - Change boolean operations - Document scope of lock - Remove device *dev from struct - Add goto block for errror handling - Add function to read value per channel in read_raw - Fix bug with lock in error paths - Remove conversion of humidity and temperature values - Add scale and offset to temperature channel - Add scale to humidity channel - Move memset out of locked section - Remove unused irq functions - Move device register at end of probe function Documentation: - Copy content of sysfs-bus-iio-scd30 to sysfs-bus-iio - Remove Documentation/ABI/testing/sysfs-bus-iio-scd30 Changes since v1: dt-bindings: - Separated compatible string for each sensor type scd4x.c: - Changed probe, resume and suspend functions to static - Added SIMPLE_DEV_PM_OPS function call for power management operations. Roan van Dijk (4): dt-bindings: iio: chemical: sensirion,scd4x: Add yaml description MAINTAINERS: Add myself as maintainer of the scd4x driver drivers: iio: chemical: Add support for Sensirion SCD4x CO2 sensor iio: documentation: Document scd4x calibration use Documentation/ABI/testing/sysfs-bus-iio | 41 ++ Documentation/ABI/testing/sysfs-bus-iio-scd30 | 34 - .../iio/chemical/sensirion,scd4x.yaml | 46 ++ MAINTAINERS | 6 + drivers/iio/chemical/Kconfig | 13 + drivers/iio/chemical/Makefile | 1 + drivers/iio/chemical/scd4x.c | 694 ++++++++++++++++++ 7 files changed, 801 insertions(+), 34 deletions(-) delete mode 100644 Documentation/ABI/testing/sysfs-bus-iio-scd30 create mode 100644 Documentation/devicetree/bindings/iio/chemical/sensirion,scd4x.yaml create mode 100644 drivers/iio/chemical/scd4x.c