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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 85421D6EBED for ; Fri, 29 Nov 2024 08:21:24 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:From:References:Cc:To: Subject:MIME-Version:Date:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=qwruH7aipvGf0fjoD39GSBv1Nr+OWF/Z/IXjjJhh+xw=; b=w8I62fmsGBZOny g4TrUQCuJdb9xmlr3e6XbHD4ZqdJMnv18gn00mgFc+rGO6b2qR1YLrrc4Rl6ld8MqR7lFy3uhZlhO jiQO74JBf52sAvkDaDG2IRp/uivcFhfFh1uK/o8I9oR/wCREoKFJjhaoZr2zXgyqkzn0UpC0kvHMY ro0ukynYCNrkQC/vIkq59EGAhfPWisFMjwnFwardBrOh6uDN7OFAJNJNaduzB2+ogjrlVYP/nEvi2 EY2pe65p5wayfG53UN/gm90ELZmXnT/H5TAbXQ/kbJu1vqYMDMsXSolTaiKpNAl6DDB+a2vZFXqZe De4LjD3+cWwvSeDyx/mg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tGwFg-0000000HAwK-1FbF; Fri, 29 Nov 2024 08:21:24 +0000 Received: from nyc.source.kernel.org ([147.75.193.91]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tGwFd-0000000HAve-1ybj for linux-phy@lists.infradead.org; Fri, 29 Nov 2024 08:21:22 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id DCF15A43D3F; Fri, 29 Nov 2024 08:19:27 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 856B5C4CECF; Fri, 29 Nov 2024 08:21:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1732868480; bh=KZ7ntoFjiRE4qae6dkopyRJLmQ10JWGG6InjMJTRkT4=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=B7hJyQr2adnxbl6WkkiCsz6QtzYu1jwp6HCl2VfCsV6WebVjB7BjLa3xkpSjWoB2z Jiyt9WU94BvPBNU7fK6mPQodt+BjouxOEpilzk9cXeESLUMNK6QgyN1/W3kC2fr/Lx L+2fEDVTfpBvV3ng9HGequHoLsgDw/GHhBUEz/CsGW2g55c1N+Bx66IBPriSXAtFoV a2Sqp4Hd4mza32JS7i9MgEWCQMza7IRw1Blv1LzQ/XYvJQChz4Cc3V6uqlc1grFou0 akHoETfTE+Cf3sv2pA27SNWevNtAWBPa4bYn8Pa0mS5TCKmQTDtZTABkLz+4p+aINE Xpp7sVNNj6epw== Message-ID: Date: Fri, 29 Nov 2024 09:21:08 +0100 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 8/8] drm/msm/dp: Support external GPIO HPD with 3rd pinctrl chip To: Xiangxu Yin , Rob Clark , Abhinav Kumar , Dmitry Baryshkov , Sean Paul , Marijn Suijten , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Simona Vetter , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Kuogee Hsieh , Vinod Koul , Kishon Vijay Abraham I , Linus Walleij , Bartosz Golaszewski , quic_lliu6@quicinc.com, quic_fangez@quicinc.com Cc: linux-arm-msm@vger.kernel.org, dri-devel@lists.freedesktop.org, freedreno@lists.freedesktop.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-phy@lists.infradead.org, linux-gpio@vger.kernel.org References: <20241129-add-displayport-support-for-qcs615-platform-v1-0-09a4338d93ef@quicinc.com> <20241129-add-displayport-support-for-qcs615-platform-v1-8-09a4338d93ef@quicinc.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; 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X-BeenThere: linux-phy@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: Linux Phy Mailing list List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-phy" Errors-To: linux-phy-bounces+linux-phy=archiver.kernel.org@lists.infradead.org On 29/11/2024 08:57, Xiangxu Yin wrote: > > + if (of_find_property(pdev->dev.of_node, "dp-hpd-gpio", NULL)) { > + dp->ext_gpio = true; > + dp->gpio_num = of_get_named_gpio(pdev->dev.of_node, "dp-hpd-gpio", 0); > + if (dp->gpio_num < 0) { > + dev_err(&pdev->dev, "Failed to get gpio:%d\n", dp->gpio_num); > + return dp->gpio_num; > + } > + > + if (!gpio_is_valid(dp->gpio_num)) { > + DRM_ERROR("gpio(%d) invalid\n", dp->gpio_num); > + return -EINVAL; > + } > + > + rc = gpio_request(dp->gpio_num, "dp-hpd-gpio"); This is not how you request GPIOs. All this code is just wrong. See Gpiolib API description/document. Or any other driver using GPIOs. Best regards, Krzysztof -- linux-phy mailing list linux-phy@lists.infradead.org https://lists.infradead.org/mailman/listinfo/linux-phy