From patchwork Tue Apr 14 18:49:27 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 202071 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=-4.1 required=3.0 tests=DKIMWL_WL_HIGH, DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, MAILING_LIST_MULTI, SPF_HELO_NONE, SPF_PASS, USER_AGENT_GIT autolearn=no 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 0265EC2BA19 for ; Tue, 14 Apr 2020 18:49:52 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D17BF20774 for ; Tue, 14 Apr 2020 18:49:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586890191; bh=xKFvKcGgSXkz6RyHFm/5YR5OI28iwBFM98iGSOEIRBI=; h=From:To:Cc:Subject:Date:List-ID:From; b=0GJppbca5V5zZzjj3yH9u/34iOzDCmlG3BpxiuonVQ+pLe2C5GEgHBjlYgkPnPa+R Nwg1SICTsEdIlR/oPqUAksrGBQ/rHZiVOPfMshnycGs88bmyW5zQE1go8uS1PGQgbq QuO3cPXkjZ6qRDfZHyVymMPLwCJzokX1JZkTBofs= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2504395AbgDNStr (ORCPT ); Tue, 14 Apr 2020 14:49:47 -0400 Received: from mail.kernel.org ([198.145.29.99]:49024 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2504372AbgDNStm (ORCPT ); Tue, 14 Apr 2020 14:49:42 -0400 Received: from localhost.localdomain (unknown [157.50.36.11]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id D47202074D; Tue, 14 Apr 2020 18:49:36 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586890182; bh=xKFvKcGgSXkz6RyHFm/5YR5OI28iwBFM98iGSOEIRBI=; h=From:To:Cc:Subject:Date:From; b=ARBAlnGwlvZR5S1DixT7TbdBDsKezWaRNHuuug95Dn4KzOuYd+xJ91Q/YbVpEd9wo GQies1ooLoQaBGo0oMJfW0UXyJIH0mw0F8/ShuxDKF7+9+Ed+L/s3UZNioSQA+8ASk NiWE9t4/uJoEEUX+hcpOxxy3BECqxhPW5DPSPNG4= From: mani@kernel.org To: jic23@kernel.org, robh+dt@kernel.org, narcisaanamaria12@gmail.com Cc: knaack.h@gmx.de, lars@metafoo.de, pmeerw@pmeerw.net, linux-iio@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, andy.shevchenko@gmail.com, Manivannan Sadhasivam Subject: [RESEND PATCH v3 0/3] Add Reset and Wakeup support for CCS811 Date: Wed, 15 Apr 2020 00:19:27 +0530 Message-Id: <20200414184930.5576-1-mani@kernel.org> X-Mailer: git-send-email 2.17.1 Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Manivannan Sadhasivam Hello, This patchset adds external reset and wakeup support for CCS811 VOC gas sensor. The nRESET and nWAKE pins available on the device are utilised to provide these functionalities. The patchset has been validated using CCS811 connected to STM32MP1 based board over I2C. While at it, the devicetree yaml binding and OF match table for this sensor are also added. Thanks, Mani Changes in v3: * Added ccs811_set_wake(false) to all error paths before calling it actually * Added Andy's reviewed-by tag * Added comment for reset procedure and dropped error print for gpio request Changes in v2: * Fixed DT binding schema and switched to dual license (GPL/BSD) * Returned actual error code from devm_gpiod_get_optional() * Dropped of.h include and of_match_ptr() Manivannan Sadhasivam (3): dt-bindings: iio: chemical: Add binding for CCS811 VOC sensor iio: chemical: Add support for external Reset and Wakeup in CCS811 iio: chemical: Add OF match table for CCS811 VOC sensor .../bindings/iio/chemical/ams,ccs811.yaml | 51 ++++++++ drivers/iio/chemical/ccs811.c | 112 ++++++++++++++++-- 2 files changed, 152 insertions(+), 11 deletions(-) create mode 100644 Documentation/devicetree/bindings/iio/chemical/ams,ccs811.yaml