From patchwork Tue Apr 14 18:41:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Manivannan Sadhasivam X-Patchwork-Id: 202073 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 887DAC352BE for ; Tue, 14 Apr 2020 18:42:06 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 61D1C2082E for ; Tue, 14 Apr 2020 18:42:06 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586889726; bh=EhY9S7dYktQbTuIZZ+wU/JMgDZdSEmh036QER0H/G2M=; h=From:To:Cc:Subject:Date:List-ID:From; b=Weoe+zQj2w5k8QUpNB7Vn9SXTD1LQTPsGLY1Lomp27i4GSFBFyTeCkOYrpzRU27pb Lon0VsP739xJQWPzTCdGgoP5hCBi+SE2iWTs7Ckguk4coaFddr7fhBPAKglgt5GGwx eks7YlwFJrZkg8hLB2yZwGyZQ2oJpdE108FXxylI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S2504166AbgDNSmE (ORCPT ); Tue, 14 Apr 2020 14:42:04 -0400 Received: from mail.kernel.org ([198.145.29.99]:38536 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S2504161AbgDNSmA (ORCPT ); Tue, 14 Apr 2020 14:42:00 -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 61E0920575; Tue, 14 Apr 2020 18:41:53 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1586889720; bh=EhY9S7dYktQbTuIZZ+wU/JMgDZdSEmh036QER0H/G2M=; h=From:To:Cc:Subject:Date:From; b=U4ZF0K8SxXm5K4rBnwdSwk7lQv4BmApw+SQ1/NgzveVvzzZEZ00gZRpc6nY1IoG2l XCgHn+7N1x8iFSxpTXMaH6ZvERfoJo+wPSPt5lkc6sIdQrwytgD882sSKCA/RvByvU Da0zFbYLM+0tDK91cfVRWz6rjnkks2qjvxzdgagU= 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: [PATCH v3 0/3] Add Reset and Wakeup support for CCS811 Date: Wed, 15 Apr 2020 00:11:44 +0530 Message-Id: <20200414184147.4857-1-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): iio: chemical: Add support for external Reset and Wakeup in CCS811 iio: chemical: Add OF match table for CCS811 VOC sensor dt-bindings: serial: Add binding for software flow control in STM32 UART .../bindings/serial/st,stm32-uart.yaml | 15 ++- drivers/iio/chemical/ccs811.c | 112 ++++++++++++++++-- 2 files changed, 115 insertions(+), 12 deletions(-)