From patchwork Fri Feb 14 16:46:35 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Fabrice Gasnier X-Patchwork-Id: 11382651 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7744D109A for ; Fri, 14 Feb 2020 17:02:23 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 4508220656 for ; Fri, 14 Feb 2020 17:02:23 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="ZZiximy6"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=st.com header.i=@st.com header.b="Fm5MEs5J" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 4508220656 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=st.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-ID:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=apzLQyW9lq09D8v20P/WRI2LQgV+y6u8k9hHedVHR5w=; b=ZZiximy6ssg9Pj Ih+kqv9puR+xmeOo8D55/Vm6VzIZs8J4XN6/Nl32ojk5Ny1CTITfTh+TmNKnTMC/zSk3kdwUCzwe8 XqEEBail6rTSmyW1og1Mh/gsIYwl7xZqru//Qe5pfxEc6vb8XxT2RN1mmGshrtigahxWQLugLzhzi BHQnG4ozHmnSZ181thb7QxpPOnJEP7GFfgvjLVM0QDMxj4eV5UYQm0SoeFWLbwA2z8if4rk4iuymf 0F80YLYXFYGAECtvyAyZOwfFI/9IVlTSU6iOG9TN/PP/IqcG22N0gam3Xftl4ANM5lQLrpvBnRWxT sMVjuID1LbM6Uw+mFFPA==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j2eM6-0003n5-9S; Fri, 14 Feb 2020 17:02:18 +0000 Received: from mx07-00178001.pphosted.com ([62.209.51.94]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1j2e89-0002LQ-0o for linux-arm-kernel@lists.infradead.org; Fri, 14 Feb 2020 16:47:56 +0000 Received: from pps.filterd (m0046668.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.16.0.42/8.16.0.42) with SMTP id 01EGh4gr004629; Fri, 14 Feb 2020 17:47:47 +0100 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=st.com; h=from : to : cc : subject : date : message-id : mime-version : content-type; s=STMicroelectronics; bh=FNp5VEUp2vyJtgWvaOR8hQzLMqdi1PLqDQdOv//CVm4=; b=Fm5MEs5JszxH/P4yoMoGZ66cmxMJN5n28ZfM9u9Q7IEGrK3MZdmL6qhHxb1Z4W9Fc07F 409fvSJe3CpLPLY3AdgpNj8+Ey2SPEjGHWvs2mS+WvLtS1G7+3M9Sc4+Uwna7Q31BlCo xL+awQnL60pOZjTXsCtzxgswpgDbmGkvmuBmu9Vmceu4vG0mGq+5WgQPeqXNSfP9uTDK Lq+coSdr6fUqA8L4oMZcmPlSLNmPPmK7ufbtvNCqnJQ6+lCKPezucvIk/IR5nK3l5UgA wQ6Z9bhObhwq62sxBq6tn2dzphVlQynoysfASHsn35rKPT/jfD1ldenHhC7syFHM8tjb eQ== Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx07-00178001.pphosted.com with ESMTP id 2y1ufhw6kj-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Fri, 14 Feb 2020 17:47:47 +0100 Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 47E82100038; Fri, 14 Feb 2020 17:47:43 +0100 (CET) Received: from Webmail-eu.st.com (sfhdag5node3.st.com [10.75.127.15]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 379F62C0965; Fri, 14 Feb 2020 17:47:43 +0100 (CET) Received: from localhost (10.75.127.45) by SFHDAG5NODE3.st.com (10.75.127.15) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Fri, 14 Feb 2020 17:47:42 +0100 From: Fabrice Gasnier To: Subject: [PATCH] iio: trigger: stm32-timer: disable master mode when stopping Date: Fri, 14 Feb 2020 17:46:35 +0100 Message-ID: <1581698795-437-1-git-send-email-fabrice.gasnier@st.com> X-Mailer: git-send-email 2.7.4 MIME-Version: 1.0 X-Originating-IP: [10.75.127.45] X-ClientProxiedBy: SFHDAG5NODE1.st.com (10.75.127.13) To SFHDAG5NODE3.st.com (10.75.127.15) X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.138, 18.0.572 definitions=2020-02-14_05:2020-02-12, 2020-02-14 signatures=0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200214_084753_396108_95FADF1E X-CRM114-Status: GOOD ( 13.84 ) X-Spam-Score: -0.9 (/) X-Spam-Report: SpamAssassin version 3.4.3 on bombadil.infradead.org summary: Content analysis details: (-0.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at https://www.dnswl.org/, low trust [62.209.51.94 listed in list.dnswl.org] 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: lars@metafoo.de, olivier.moysan@st.com, alexandre.torgue@st.com, linux-iio@vger.kernel.org, pmeerw@pmeerw.net, linux-kernel@vger.kernel.org, mcoquelin.stm32@gmail.com, knaack.h@gmx.de, fabrice.gasnier@st.com, linux-stm32@st-md-mailman.stormreply.com, linux-arm-kernel@lists.infradead.org, benjamin.gaignard@st.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org Master mode should be disabled when stopping. This mainly impacts possible other use-case after timer has been stopped. Currently, master mode remains set (from start routine). Fixes: 6fb34812c2a2 ("iio: stm32 trigger: Add support for TRGO2 triggers") Signed-off-by: Fabrice Gasnier --- drivers/iio/trigger/stm32-timer-trigger.c | 11 +++++++++-- 1 file changed, 9 insertions(+), 2 deletions(-) diff --git a/drivers/iio/trigger/stm32-timer-trigger.c b/drivers/iio/trigger/stm32-timer-trigger.c index 2e0d32a..2f82e8c 100644 --- a/drivers/iio/trigger/stm32-timer-trigger.c +++ b/drivers/iio/trigger/stm32-timer-trigger.c @@ -161,7 +161,8 @@ static int stm32_timer_start(struct stm32_timer_trigger *priv, return 0; } -static void stm32_timer_stop(struct stm32_timer_trigger *priv) +static void stm32_timer_stop(struct stm32_timer_trigger *priv, + struct iio_trigger *trig) { u32 ccer, cr1; @@ -179,6 +180,12 @@ static void stm32_timer_stop(struct stm32_timer_trigger *priv) regmap_write(priv->regmap, TIM_PSC, 0); regmap_write(priv->regmap, TIM_ARR, 0); + /* Force disable master mode */ + if (stm32_timer_is_trgo2_name(trig->name)) + regmap_update_bits(priv->regmap, TIM_CR2, TIM_CR2_MMS2, 0); + else + regmap_update_bits(priv->regmap, TIM_CR2, TIM_CR2_MMS, 0); + /* Make sure that registers are updated */ regmap_update_bits(priv->regmap, TIM_EGR, TIM_EGR_UG, TIM_EGR_UG); } @@ -197,7 +204,7 @@ static ssize_t stm32_tt_store_frequency(struct device *dev, return ret; if (freq == 0) { - stm32_timer_stop(priv); + stm32_timer_stop(priv, trig); } else { ret = stm32_timer_start(priv, trig, freq); if (ret)