From patchwork Tue Dec 29 01:52:57 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Gwendal Grignou X-Patchwork-Id: 11991829 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=-13.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham 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 3D615C433DB for ; Tue, 29 Dec 2020 01:54:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id E4258207DE for ; Tue, 29 Dec 2020 01:54:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726139AbgL2Bxs (ORCPT ); Mon, 28 Dec 2020 20:53:48 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55180 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726014AbgL2Bxr (ORCPT ); Mon, 28 Dec 2020 20:53:47 -0500 Received: from mail-pj1-x1035.google.com (mail-pj1-x1035.google.com [IPv6:2607:f8b0:4864:20::1035]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7A484C0613D6 for ; Mon, 28 Dec 2020 17:53:07 -0800 (PST) Received: by mail-pj1-x1035.google.com with SMTP id v1so677169pjr.2 for ; Mon, 28 Dec 2020 17:53:07 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=hgX1vWmXsqLL2u5r8XIXzwJjTHAgdag+GB5T19oC7I0=; b=H2n6rnJq1BoIPMawMVGZsJR1Bc7aaS+f5SugX7m8XQnF+sesvWVV7LpkpVYVHj4hui B4+ANrnOHPRfj+JgYdFP/schle8cJa49bVoo2J2XniWxXZ4HuseNGBKRqNokt13gNAoX 3a/cAduvVZ1N7fVMJYeIR7dwbYFbQyu/eKl7w= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=hgX1vWmXsqLL2u5r8XIXzwJjTHAgdag+GB5T19oC7I0=; b=iiWaOcgprSWsBEXamxGUAbjKBJsBc0UiPmCoN1arIKE+T8iU409writXPwKFv19lns 8QxQ/uycdeKJcM44BF6Jk20hz++EcqGyMjpuMD5RoaBeTPONT+YG6e6uD3C3b89ourGp Tku7yoF+lk0CGZJuJ3I01EtBpe6VOXr9Lyfwm8ZmJnG3SQBdYTY4rZl8PiMgLK1DyjSa HlpwI1Jt6x3FZjdskycsJUUlENN0M55SRNiop56f7IyFlTMYq7BDDBtV72eHeAISMh6U u6AQrkSUjhSNG3A+3dn7kJY+gmX9DgzgAlIRZZ+nRX82yTSjW/uJ1AZ5JYDtw06T5dni vDgA== X-Gm-Message-State: AOAM533Pw5SgASGcQyomu+HXuZ86frkIInd52to2ZKkZgTx+YIIO5V1E TPTdXpHNjMj39mHiRGYXLfAEsvk3+iK4cA== X-Google-Smtp-Source: ABdhPJxx5Q+eyJPHqjbYh5J/8VOKTdGSw8MZR/oBUESlvERsNsgN3sGlpJlwRHS9xWDamAPYDWyJsA== X-Received: by 2002:a17:902:d90d:b029:da:5114:7275 with SMTP id c13-20020a170902d90db02900da51147275mr47844525plz.64.1609206786907; Mon, 28 Dec 2020 17:53:06 -0800 (PST) Received: from localhost ([2620:15c:202:201:7220:84ff:fe09:94fe]) by smtp.gmail.com with ESMTPSA id h12sm26012306pgk.70.2020.12.28.17.53.05 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Mon, 28 Dec 2020 17:53:06 -0800 (PST) From: Gwendal Grignou To: gabriele.mzt@gmail.com, jic23@kernel.org, lars@metafoo.de, andy.shevchenko@gmail.com Cc: linux-iio@vger.kernel.org, Gwendal Grignou Subject: [PATCH v5 0/3] iio: acpi_als: Add sotfware trigger support Date: Mon, 28 Dec 2020 17:52:57 -0800 Message-Id: <20201229015300.3037816-1-gwendal@chromium.org> X-Mailer: git-send-email 2.29.2.729.g45daf8777d-goog MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-iio@vger.kernel.org Some devices (chromebooks) present the ACPI ALS device but do not have ability to notify when a new sample is present. Add support for software trigger (hrtimer/sysfs-trigger) to allow retrieving samples using iio buffers. The first path fully adds timestamp channel, the second adds a local variable in probe routine and the last one adds trigger support. This patch assumes the patch "iio: set default trig->dev.parent" is applied. Gwendal Grignou (3): iio: acpi_als: Add timestamp channel iio: acpi_als: Add local variable dev in probe iio: acpi_als: Add trigger support drivers/iio/light/acpi-als.c | 121 +++++++++++++++++++++++------------ 1 file changed, 81 insertions(+), 40 deletions(-)