From patchwork Fri Dec 17 00:37:44 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Javier Martinez Canillas X-Patchwork-Id: 12683259 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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (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 A0290C433EF for ; Fri, 17 Dec 2021 00:38:59 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EC12310E2D8; Fri, 17 Dec 2021 00:38:35 +0000 (UTC) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id E3CF710E245 for ; Fri, 17 Dec 2021 00:38:31 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1639701510; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=wjBFg3uca0hr/RF0/NYN8McW8siJPGtew7BDMoZLdbk=; b=OIj7bUsWiuLMAq6ZIc0iXrba+dailrSrMhNQ9pd+SMRHNlTmQG/wsXvAUEOURf++8GnP8H yuriSZG2JlSmsV1qLU/389jCGV/OrNvlC5SYwj9smOHbqSwFTT9YDW1ocsQmOz1F/qi2a9 ZeAmu2DMu31VOw3/X215dyl86kPoqFM= Received: from mail-wr1-f70.google.com (mail-wr1-f70.google.com [209.85.221.70]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-172-sZWIR_VXO_-HofMZ6lGmhA-1; Thu, 16 Dec 2021 19:38:27 -0500 X-MC-Unique: sZWIR_VXO_-HofMZ6lGmhA-1 Received: by mail-wr1-f70.google.com with SMTP id t30-20020adfa2de000000b001a24004e1fbso145255wra.10 for ; Thu, 16 Dec 2021 16:38:27 -0800 (PST) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=wjBFg3uca0hr/RF0/NYN8McW8siJPGtew7BDMoZLdbk=; b=c+KV12aEw2HNDf54lxSfkTsG7zn+nmn4NkOn9kgYXLO/A5mAhjEtYrF2w/HAL7JFbz T42BewUWF9eQJCfAXhCpGGtv+UzVkE8TOHfc2LkA+ZXnzCD3JTIMT+bi3RLKkKc5ndVl wvrnYrRE+FmefFSz4ZSyjlFJXFQjZ6BheUSjWOMrqcljt/Npar33aCIISRfrT3GnhSHx PY/32ukEaMxyXgwpDf8M43i1aM1GjHKUSY5laluolwH/2z+RoMVielx5Pq/pBOup5hd/ FoE+Zw/wJ2UXjOWdPi3+EQmj1eDud3ZoCgFyzSOHOJxHE5zjQb9ifDVwVW9N8Lp66m17 HdMg== X-Gm-Message-State: AOAM532pSZ9ToQRpDP4vP2hu4gUWHF8lre7+dDr2303pV4Ms0GvSIOBB irJjd1LJPGudNFClyNqcY1ij78ad6XabMeWj58aSvJBtaoR/cFaJgIJbY1z+E9A4bLvftcAsba3 jXEqTCGLuv6Sg26r+1TKLmYDT8IrW X-Received: by 2002:a5d:648d:: with SMTP id o13mr349928wri.637.1639701506675; Thu, 16 Dec 2021 16:38:26 -0800 (PST) X-Google-Smtp-Source: ABdhPJxeyzKTq5rHZsrWQHaePARPuD9O79wGdBTrc7g9E10h/hppontDey+ouzFKQJLSf7A4vCd2XQ== X-Received: by 2002:a5d:648d:: with SMTP id o13mr349917wri.637.1639701506497; Thu, 16 Dec 2021 16:38:26 -0800 (PST) Received: from minerva.home ([92.176.231.205]) by smtp.gmail.com with ESMTPSA id bg12sm7368433wmb.5.2021.12.16.16.38.25 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Dec 2021 16:38:26 -0800 (PST) From: Javier Martinez Canillas To: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [PATCH v2 29/37] drm/msm: Add support for the nomodeset kernel parameter Date: Fri, 17 Dec 2021 01:37:44 +0100 Message-Id: <20211217003752.3946210-30-javierm@redhat.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211217003752.3946210-1-javierm@redhat.com> References: <20211217003752.3946210-1-javierm@redhat.com> MIME-Version: 1.0 Authentication-Results: relay.mimecast.com; auth=pass smtp.auth=CUSA124A263 smtp.mailfrom=javierm@redhat.com X-Mimecast-Spam-Score: 0 X-Mimecast-Originator: redhat.com X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Sean Paul , Javier Martinez Canillas Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" According to disable Documentation/admin-guide/kernel-parameters.txt, this parameter can be used to disable kernel modesetting. DRM drivers will not perform display-mode changes or accelerated rendering and only the system framebuffer will be available if it was set-up. But only a few DRM drivers currently check for nomodeset, make this driver to also support the command line parameter. Signed-off-by: Javier Martinez Canillas --- (no changes since v1) drivers/gpu/drm/msm/msm_drv.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/msm/msm_drv.c b/drivers/gpu/drm/msm/msm_drv.c index 892c04365239..8f30e68ae3b5 100644 --- a/drivers/gpu/drm/msm/msm_drv.c +++ b/drivers/gpu/drm/msm/msm_drv.c @@ -518,6 +518,9 @@ static int msm_drm_init(struct device *dev, const struct drm_driver *drv) struct msm_mdss *mdss; int ret, i; + if (drm_firmware_drivers_only()) + return -ENODEV; + ddev = drm_dev_alloc(drv, dev); if (IS_ERR(ddev)) { DRM_DEV_ERROR(dev, "failed to allocate drm_device\n");