From nobody Mon Feb 9 13:57:58 2026 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 30FB1EB64D9 for ; Thu, 15 Jun 2023 10:59:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244393AbjFOK7C (ORCPT ); Thu, 15 Jun 2023 06:59:02 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59274 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1343788AbjFOK6y (ORCPT ); Thu, 15 Jun 2023 06:58:54 -0400 Received: from mail-lf1-x133.google.com (mail-lf1-x133.google.com [IPv6:2a00:1450:4864:20::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 906D8272E for ; Thu, 15 Jun 2023 03:58:44 -0700 (PDT) Received: by mail-lf1-x133.google.com with SMTP id 2adb3069b0e04-4f63ab1ac4aso10132472e87.0 for ; Thu, 15 Jun 2023 03:58:44 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rasmusvillemoes.dk; s=google; t=1686826723; x=1689418723; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:from:to:cc:subject:date :message-id:reply-to; bh=Gv+DyaZll/H2jD9ow4C+es+DNFI9kuFxb3UaUHDFHqk=; b=Mb+vso8FaqEEofawsYkCeO6DcWi2o/+zW8gnJATEZQOM4QaWY0QPvGxuwLl7IJogHB dxeDv8yKMU27OtF5I5Mqlk/X3lbiRg0CZ75rF51wFgaN2G1UjUmiO9BkQ3TuKjnMNJ6T kUrCQabCoKJ8kJXxwDkmuwQJZhNOaEqoRjsJQ= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686826723; x=1689418723; h=content-transfer-encoding:mime-version:references:in-reply-to :message-id:date:subject:cc:to:from:x-gm-message-state:from:to:cc :subject:date:message-id:reply-to; bh=Gv+DyaZll/H2jD9ow4C+es+DNFI9kuFxb3UaUHDFHqk=; b=bnaL8ITTCkUPtjZIqWUjT3BfGbe8f8y6p8+7WYkxxtNEYOO4NhSuNNPQ0AolkCPiEp hb2+d2gXuQAwj4T1EwE7EvefhKzRV9HSVpVXNt25smpj96Sti1cxSdn9i6D2cldc+zmj UKQXW/U2D+iZAqSipZuQQdbmtmTTerrKYBOlRFFpTAglvh4MuO0YgP6YO1e80xRDP7Qi glQBUzMf/8nOjeV8HMczqy61dGv68R/fT0dSZYScjYfJKjKQbF9pxrgBUcFQfZWMDthX RyYaozD6OnYLYcinS/vcOQkqsBVmhxNdETf0uhw1giTxLq3zpNq6GyFaC+oGY4xfPTSA mmcg== X-Gm-Message-State: AC+VfDytYg6pCut/BNPP1k00qq8/gvf8s3GuxnwBSGsk6V00gnQL3nfu taZ0ewzlAH8/gaxi+VYtca5X+Q== X-Google-Smtp-Source: ACHHUZ55S44mbroI4h4dOvkl5CJL0C/g7l1shWyyYYaWVWNVM1qxhxYMPsD8IgVniWLYd4y5+ukC6Q== X-Received: by 2002:a19:9150:0:b0:4f8:48f3:f08 with SMTP id y16-20020a199150000000b004f848f30f08mr12996lfj.21.1686826722859; Thu, 15 Jun 2023 03:58:42 -0700 (PDT) Received: from prevas-ravi.prevas.se ([81.216.59.226]) by smtp.gmail.com with ESMTPSA id h7-20020ac25967000000b004f13f4ec267sm165364lfp.186.2023.06.15.03.58.39 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 15 Jun 2023 03:58:40 -0700 (PDT) From: Rasmus Villemoes To: Alessandro Zummo , Alexandre Belloni Cc: Andy Shevchenko , devicetree@vger.kernel.org, Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-rtc@vger.kernel.org, Rasmus Villemoes , linux-kernel@vger.kernel.org Subject: [PATCH v3 5/8] rtc: isl12022: implement RTC_VL_READ ioctl Date: Thu, 15 Jun 2023 12:58:23 +0200 Message-Id: <20230615105826.411953-6-linux@rasmusvillemoes.dk> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20230615105826.411953-1-linux@rasmusvillemoes.dk> References: <20230612113059.247275-1-linux@rasmusvillemoes.dk> <20230615105826.411953-1-linux@rasmusvillemoes.dk> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Type: text/plain; charset="utf-8" Hook up support for reading the values of the SR_LBAT85 and SR_LBAT75 bits. Translate the former to "battery low", and the latter to "battery empty or not-present". Signed-off-by: Rasmus Villemoes --- drivers/rtc/rtc-isl12022.c | 27 +++++++++++++++++++++++++++ 1 file changed, 27 insertions(+) diff --git a/drivers/rtc/rtc-isl12022.c b/drivers/rtc/rtc-isl12022.c index 6a757f0a4736..a48456abdcb9 100644 --- a/drivers/rtc/rtc-isl12022.c +++ b/drivers/rtc/rtc-isl12022.c @@ -204,7 +204,34 @@ static int isl12022_rtc_set_time(struct device *dev, s= truct rtc_time *tm) return regmap_bulk_write(regmap, ISL12022_REG_SC, buf, sizeof(buf)); } =20 +static int isl12022_rtc_ioctl(struct device *dev, unsigned int cmd, unsign= ed long arg) +{ + struct regmap *regmap =3D dev_get_drvdata(dev); + u32 user, val; + int ret; + + switch (cmd) { + case RTC_VL_READ: + ret =3D regmap_read(regmap, ISL12022_REG_SR, &val); + if (ret) + return ret; + + user =3D 0; + if (val & ISL12022_SR_LBAT85) + user |=3D RTC_VL_BACKUP_LOW; + + if (val & ISL12022_SR_LBAT75) + user |=3D RTC_VL_BACKUP_EMPTY; + + return put_user(user, (u32 __user *)arg); + + default: + return -ENOIOCTLCMD; + } +} + static const struct rtc_class_ops isl12022_rtc_ops =3D { + .ioctl =3D isl12022_rtc_ioctl, .read_time =3D isl12022_rtc_read_time, .set_time =3D isl12022_rtc_set_time, }; --=20 2.37.2