From patchwork Thu Jul 8 12:01:06 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Nuno Sa X-Patchwork-Id: 12365023 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=-17.0 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 BE304C07E96 for ; Thu, 8 Jul 2021 11:58:47 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 9F7106141D for ; Thu, 8 Jul 2021 11:58:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231776AbhGHMB2 (ORCPT ); Thu, 8 Jul 2021 08:01:28 -0400 Received: from mx0a-00128a01.pphosted.com ([148.163.135.77]:7806 "EHLO mx0a-00128a01.pphosted.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231773AbhGHMB2 (ORCPT ); Thu, 8 Jul 2021 08:01:28 -0400 Received: from pps.filterd (m0167088.ppops.net [127.0.0.1]) by mx0a-00128a01.pphosted.com (8.16.0.43/8.16.0.43) with SMTP id 168Btxc9008114; Thu, 8 Jul 2021 07:58:32 -0400 Received: from nwd2mta3.analog.com ([137.71.173.56]) by mx0a-00128a01.pphosted.com with ESMTP id 39nub31aw7-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Thu, 08 Jul 2021 07:58:32 -0400 Received: from ASHBMBX9.ad.analog.com (ASHBMBX9.ad.analog.com [10.64.17.10]) by nwd2mta3.analog.com (8.14.7/8.14.7) with ESMTP id 168BwUsh042533 (version=TLSv1/SSLv3 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=FAIL); Thu, 8 Jul 2021 07:58:30 -0400 Received: from ASHBMBX8.ad.analog.com (10.64.17.5) by ASHBMBX9.ad.analog.com (10.64.17.10) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.858.5; Thu, 8 Jul 2021 07:58:30 -0400 Received: from zeus.spd.analog.com (10.66.68.11) by ashbmbx8.ad.analog.com (10.64.17.5) with Microsoft SMTP Server id 15.2.858.5 via Frontend Transport; Thu, 8 Jul 2021 07:58:30 -0400 Received: from nsa.ad.analog.com ([10.44.3.58]) by zeus.spd.analog.com (8.15.1/8.15.1) with ESMTP id 168BwPto020146; Thu, 8 Jul 2021 07:58:29 -0400 From: =?utf-8?q?Nuno_S=C3=A1?= To: , CC: Guenter Roeck , Rob Herring , Jean Delvare Subject: [RFC PATCH 1/6] hwmon: axi-fan-control: make sure the clock is enabled Date: Thu, 8 Jul 2021 14:01:06 +0200 Message-ID: <20210708120111.519444-2-nuno.sa@analog.com> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210708120111.519444-1-nuno.sa@analog.com> References: <20210708120111.519444-1-nuno.sa@analog.com> MIME-Version: 1.0 X-ADIRuleOP-NewSCL: Rule Triggered X-Proofpoint-GUID: GX0tjEgwNm9NRaMiHIghe33laSuLxzav X-Proofpoint-ORIG-GUID: GX0tjEgwNm9NRaMiHIghe33laSuLxzav X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:6.0.391,18.0.790 definitions=2021-07-08_06:2021-07-08,2021-07-08 signatures=0 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 spamscore=0 malwarescore=0 mlxlogscore=999 suspectscore=0 lowpriorityscore=0 impostorscore=0 phishscore=0 mlxscore=0 bulkscore=0 priorityscore=1501 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.12.0-2104190000 definitions=main-2107080067 Precedence: bulk List-ID: X-Mailing-List: linux-hwmon@vger.kernel.org The core will only work if it's clock is enabled. This patch is a minor enhancement to make sure that's the case. Signed-off-by: Nuno Sá --- drivers/hwmon/axi-fan-control.c | 13 +++++++++++++ 1 file changed, 13 insertions(+) diff --git a/drivers/hwmon/axi-fan-control.c b/drivers/hwmon/axi-fan-control.c index e3f6b03e6764..901d1588234d 100644 --- a/drivers/hwmon/axi-fan-control.c +++ b/drivers/hwmon/axi-fan-control.c @@ -351,6 +351,11 @@ static int axi_fan_control_init(struct axi_fan_control_data *ctl, return ret; } +static void axi_fan_control_clk_disable(void *clk) +{ + clk_disable_unprepare(clk); +} + static const struct hwmon_channel_info *axi_fan_control_info[] = { HWMON_CHANNEL_INFO(pwm, HWMON_PWM_INPUT), HWMON_CHANNEL_INFO(fan, HWMON_F_INPUT | HWMON_F_FAULT | HWMON_F_LABEL), @@ -406,6 +411,14 @@ static int axi_fan_control_probe(struct platform_device *pdev) return PTR_ERR(clk); } + ret = clk_prepare_enable(clk); + if (ret) + return ret; + + ret = devm_add_action_or_reset(&pdev->dev, axi_fan_control_clk_disable, clk); + if (ret) + return ret; + ctl->clk_rate = clk_get_rate(clk); if (!ctl->clk_rate) return -EINVAL;