From nobody Mon Feb 9 13:35:41 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 03087C88CB4 for ; Tue, 13 Jun 2023 13:01:38 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S242201AbjFMNBg (ORCPT ); Tue, 13 Jun 2023 09:01:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:55044 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S242477AbjFMNBL (ORCPT ); Tue, 13 Jun 2023 09:01:11 -0400 Received: from mail-lf1-x12c.google.com (mail-lf1-x12c.google.com [IPv6:2a00:1450:4864:20::12c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 1E798184 for ; Tue, 13 Jun 2023 06:01:10 -0700 (PDT) Received: by mail-lf1-x12c.google.com with SMTP id 2adb3069b0e04-4f6370ddd27so6694434e87.0 for ; Tue, 13 Jun 2023 06:01:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=rasmusvillemoes.dk; s=google; t=1686661268; x=1689253268; 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=ur6n0qRjGzRHDGudKm3FuB0Bjxk6aZigQtAmr4SnRcc=; b=TfQ+si9zfMC1c2VVHNiGoJFdzNbiFiqOhy0k/qv87c7AZskvHQZAcsGE75D7fsI6UT xpU3MM8/fRLVZ8Z4hxL2fRx2LCGrN0vo2xp2CM84wCAUrxlpYIzH/Tb3e54Dvr5T6XOQ uPMvUj+0EbrFgQNI6pinpXztygCPyyh95V7HE= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1686661268; x=1689253268; 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=ur6n0qRjGzRHDGudKm3FuB0Bjxk6aZigQtAmr4SnRcc=; b=ZIupDFnjBJ+f9rhIE1+E4B2Qd+cebDilVj+TrXWVVRP3KMQxtXJImWD1UmEDIAH/ue MaMQn7JYU2ZidnvhjzKpmxTIWhRATaqOcN3OKmGW0NdV+kBrs1qCnxlyYc/6QdIvrKIG 0Ya7mtXfU9EokGMs2Q35OVAgyyI9nMSEW4sDmRgCJGLuWyhKH9bsYNANPWKqqcQSGnm6 LEXnIDSF5F9zKyrrxHP6s1Tdm36dRFc1F8L42tM/i28GEeI8bRm1u3zA2glZS8Fz9rSk rNdRACxTpOhtDktWW59Z+AlQA2X6KqX6MfHAtJDN6EcL2Jl7SUD3cW8AClNDkVxt8Hz2 yJTw== X-Gm-Message-State: AC+VfDyaZ7XQrBf8SFsIQyDhjg4Q7wIDQQEHDA79ENIBj6rSN4iAQ/J+ KTOKtMATff1poJnh7vkG7Pvqth8+cxl7WwQVWLQsVg== X-Google-Smtp-Source: ACHHUZ4M1sqvyhut3MbQtjYadzTdq+vm2CkSD8F5AYlwgvuUBEzp0EwJZ1aB9EY22TAAOoHDSgMVOA== X-Received: by 2002:a19:6756:0:b0:4f1:26f5:77fb with SMTP id e22-20020a196756000000b004f126f577fbmr6027137lfj.28.1686661268430; Tue, 13 Jun 2023 06:01:08 -0700 (PDT) Received: from prevas-ravi.prevas.se ([81.216.59.226]) by smtp.gmail.com with ESMTPSA id u24-20020ac243d8000000b004f14ae5ded8sm1793786lfl.28.2023.06.13.06.01.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 13 Jun 2023 06:01:08 -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 v2 5/8] rtc: isl12022: implement RTC_VL_READ ioctl Date: Tue, 13 Jun 2023 15:00:07 +0200 Message-Id: <20230613130011.305589-6-linux@rasmusvillemoes.dk> X-Mailer: git-send-email 2.37.2 In-Reply-To: <20230613130011.305589-1-linux@rasmusvillemoes.dk> References: <20230612113059.247275-1-linux@rasmusvillemoes.dk> <20230613130011.305589-1-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 | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/drivers/rtc/rtc-isl12022.c b/drivers/rtc/rtc-isl12022.c index 50bbd1fefad8..bf0d65643897 100644 --- a/drivers/rtc/rtc-isl12022.c +++ b/drivers/rtc/rtc-isl12022.c @@ -204,7 +204,33 @@ 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 =3D 0, val; + int ret; + + switch (cmd) { + case RTC_VL_READ: + ret =3D regmap_read(regmap, ISL12022_REG_SR, &val); + if (ret < 0) + return ret; + + 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