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 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 6B832C43217 for ; Fri, 1 Oct 2021 07:03:11 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 5147B61A40 for ; Fri, 1 Oct 2021 07:03:11 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1352448AbhJAHEv (ORCPT ); Fri, 1 Oct 2021 03:04:51 -0400 Received: from protonic.xs4all.nl ([83.163.252.89]:53902 "EHLO protonic.xs4all.nl" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231165AbhJAHEs (ORCPT ); Fri, 1 Oct 2021 03:04:48 -0400 Received: from ert768.prtnl (ert768.prtnl [192.168.224.11]) by sparta.prtnl (Postfix) with ESMTP id ED59344A024E; Fri, 1 Oct 2021 09:02:58 +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 v4 0/4] iio: chemical: Add support for Sensirion SCD4x CO2 sensor Date: Fri, 1 Oct 2021 09:02:50 +0200 Message-Id: <20211001070254.3940795-1-roan@protonic.nl> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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 v4: scd4x.c: - Minor fixes in documentation - Reorder trigger_handler so memcpy is not needed anymore Documentation: - Change information about the KernelVersion for the calibration_forced_value_available 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 | 692 ++++++++++++++++++ 7 files changed, 799 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 -- 2.30.2