From mboxrd@z Thu Jan 1 00:00:00 1970 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=-9.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_ADSP_ALL,DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=unavailable 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 72E45C433E3 for ; Tue, 14 Jul 2020 10:25:11 +0000 (UTC) Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) (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 40D8122201 for ; Tue, 14 Jul 2020 10:25:11 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="yLHty9g6"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=megous.com header.i=@megous.com header.b="pnnLYhmz" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 40D8122201 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=megous.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=merlin.20170209; h=Sender:Content-Transfer-Encoding: Content-Type:Cc:List-Subscribe:List-Help:List-Post:List-Archive: List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: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:List-Owner; bh=RqCOguedFtn2jjkBbcYcejw0pReHnR+MqxVZuGre1To=; b=yLHty9g6ku1tAo6rnaTWWxRF+ Eer2Lo8lFDEiKc0OS+gjU+2KKu4c4mWE0KQ5BHpTtoPBlA+qnn2nsNMT85JeA7YMDYvBVWDP4qZdr F3AVcsnF/4lk8XXetlB3HrHwhcgxtXRZ+RQiurDBCv3XWRpwn+c80STUYzWxmZSX1/LpbcMYzKJpx QRAbTqpF2OC5svOwpBMCY4e5r/SsI3Gg815ZeA8awEbhi+550BfKm/jzkODIoKdz3wGLQgppWrds+ yHJWCbr2wmtFwFO5EFFJcUldOEmk/gG3wWY0OXcQLs0jyS7YtM3c92gR1RpvpnfQoxtDVvgTlDWzh iX/iuwzGw==; Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1jvI6I-00052W-VR; Tue, 14 Jul 2020 10:23:51 +0000 Received: from vps.xff.cz ([195.181.215.36]) by merlin.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1jvI6A-0004zV-Ft for linux-arm-kernel@lists.infradead.org; Tue, 14 Jul 2020 10:23:44 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=megous.com; s=mail; t=1594722218; bh=OH0uafqw3wiAiFdr3Xq7r48sm5oT4+qFhajRJjz8lvE=; h=From:To:Cc:Subject:Date:References:From; b=pnnLYhmzNGjWbXY+9HW3ylap0q/+IK6Yc4omVlj019IQFIPEQ4M7tgiMHRu/djUDf NsZQ96KDg/M/7qLavIyoKhJBOLq9bu9NRNTO1LECaT0Yzevypdm3ACS5njsZY7G4Lu 5xCu7ld5J1Eu+ci3PMTvP2fNsqGSRrGw1ZyHrR3Y= From: Ondrej Jirman To: linux-sunxi@googlegroups.com, Dmitry Torokhov , Rob Herring , Mark Rutland , Maxime Ripard , Chen-Yu Tsai Subject: [PATCH v4 2/4] input: gpio-vibra: Allow to use vcc-supply alone to control the vibrator Date: Tue, 14 Jul 2020 12:23:01 +0200 Message-Id: <20200714102303.3007896-3-megous@megous.com> In-Reply-To: <20200714102303.3007896-1-megous@megous.com> References: <20200714102303.3007896-1-megous@megous.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200714_062342_673069_37B1F0E1 X-CRM114-Status: GOOD ( 11.18 ) 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: Ondrej Jirman , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Luca Weiss , Tomas Novotny , linux-input@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Make enable-gpio optional to allow using this driver with boards that have vibrator connected to a power supply without intermediate gpio based enable circuitry. Also avoid a case where neither regulator nor enable gpio is specified, and bail out in probe in such a case. Signed-off-by: Ondrej Jirman --- drivers/input/misc/gpio-vibra.c | 14 ++++++++++---- 1 file changed, 10 insertions(+), 4 deletions(-) diff --git a/drivers/input/misc/gpio-vibra.c b/drivers/input/misc/gpio-vibra.c index f79f75595dd7..b3bb7e61ed1d 100644 --- a/drivers/input/misc/gpio-vibra.c +++ b/drivers/input/misc/gpio-vibra.c @@ -39,7 +39,7 @@ static int gpio_vibrator_start(struct gpio_vibrator *vibrator) struct device *pdev = vibrator->input->dev.parent; int err; - if (!vibrator->vcc_on) { + if (vibrator->vcc && !vibrator->vcc_on) { err = regulator_enable(vibrator->vcc); if (err) { dev_err(pdev, "failed to enable regulator: %d\n", err); @@ -57,7 +57,7 @@ static void gpio_vibrator_stop(struct gpio_vibrator *vibrator) { gpiod_set_value_cansleep(vibrator->gpio, 0); - if (vibrator->vcc_on) { + if (vibrator->vcc && vibrator->vcc_on) { regulator_disable(vibrator->vcc); vibrator->vcc_on = false; } @@ -112,7 +112,7 @@ static int gpio_vibrator_probe(struct platform_device *pdev) if (!vibrator->input) return -ENOMEM; - vibrator->vcc = devm_regulator_get(&pdev->dev, "vcc"); + vibrator->vcc = devm_regulator_get_optional(&pdev->dev, "vcc"); err = PTR_ERR_OR_ZERO(vibrator->vcc); if (err) { if (err != -EPROBE_DEFER) @@ -121,7 +121,8 @@ static int gpio_vibrator_probe(struct platform_device *pdev) return err; } - vibrator->gpio = devm_gpiod_get(&pdev->dev, "enable", GPIOD_OUT_LOW); + vibrator->gpio = devm_gpiod_get_optional(&pdev->dev, "enable", + GPIOD_OUT_LOW); err = PTR_ERR_OR_ZERO(vibrator->gpio); if (err) { if (err != -EPROBE_DEFER) @@ -130,6 +131,11 @@ static int gpio_vibrator_probe(struct platform_device *pdev) return err; } + if (!vibrator->vcc && !vibrator->gpio) { + dev_err(&pdev->dev, "Neither gpio nor regulator provided\n"); + return -EINVAL; + } + INIT_WORK(&vibrator->play_work, gpio_vibrator_play_work); vibrator->input->name = "gpio-vibrator"; -- 2.27.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel