From patchwork Wed Dec 15 00:59:40 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: 12677187 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 3B530C433FE for ; Wed, 15 Dec 2021 01:02:18 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8D8C310E1A9; Wed, 15 Dec 2021 01:01:51 +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 472CE10E155 for ; Wed, 15 Dec 2021 01:01:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1639530081; 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=Dn9hvS/hE+6Q3aeifiJb08PIGBHJHXd+uPexu/tsonU=; b=MEeE1H3QMDbOwELmPbFXC3v50XYAeD6cf3VbpmFSz+YRFUDcroiowSiuB5JCDD5EDgs+iJ tHbV+IiRGLGctJ7uE+mntJpuxdqZp1dzCFsRV47Oawwm8I/oIKbQPReN1XjnQMOnHi5L3V rusj+CKZnfHSLB/2Y3IeEFlVub+uhsk= Received: from mail-wm1-f71.google.com (mail-wm1-f71.google.com [209.85.128.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-662-PaaW1zL6MYKl38cf6ESsMg-1; Tue, 14 Dec 2021 20:01:19 -0500 X-MC-Unique: PaaW1zL6MYKl38cf6ESsMg-1 Received: by mail-wm1-f71.google.com with SMTP id j20-20020a05600c1c1400b00343ad0c4c40so1928916wms.0 for ; Tue, 14 Dec 2021 17:01:19 -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=Dn9hvS/hE+6Q3aeifiJb08PIGBHJHXd+uPexu/tsonU=; b=NdVJ6FvNM6GI3/DQhsTbGRkIj0ljz90vq/JpPTC9fUjhPVsFFtqHtlO39twneRSbAV a3QUmP/vEFCQBzn0FBnbKJ+gegNbTParYgZWxYhnJiIuZbHNob1zm1/92VeTdKqEBbvY wnfbpEUliCGXO1i0c3anhyP1ETUWGvmnCQQjhLFgjEPpswiMItS60gYOyF37hb+LxXUT dmWoKHD3G4q9c2tlynbC1icwFIpMY2YuWIekjMZjAzWxyLDFJl5Gm/IuEbs80IBA/Y0E bX305b7ZbVLWcQHs64drn4cKzg2+NYXGbClsf4cXbjS9ZsBh3HZDpZTpEJTCtm9Q8uAM 3JAA== X-Gm-Message-State: AOAM531Gc13kQIRYEyQnYCRdKjCi97p3ulrvzG7t0lWxD4F4j1I1R9FV L6bz7pXYJeqkpozWrSH6z1zZhWcj+/fk5ATlRNuQ1Sp7Hd/Qjrx21+5uTUOCBBzqYJwdaFQ9SHk l2ismqO0DCFfz2JF8th1fHLA0Iedj X-Received: by 2002:adf:c5d1:: with SMTP id v17mr2041311wrg.571.1639530078165; Tue, 14 Dec 2021 17:01:18 -0800 (PST) X-Google-Smtp-Source: ABdhPJycZee8IeEpnSGxw0fK7crCXAu04SYEjusDcgnk8vStLkhcKO3lv7vCppnlF58OqBmYIZJQ0A== X-Received: by 2002:adf:c5d1:: with SMTP id v17mr2041301wrg.571.1639530078013; Tue, 14 Dec 2021 17:01:18 -0800 (PST) Received: from minerva.home ([92.176.231.205]) by smtp.gmail.com with ESMTPSA id o64sm334543wme.28.2021.12.14.17.01.17 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Dec 2021 17:01:17 -0800 (PST) From: Javier Martinez Canillas To: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [PATCH 32/60] drm: rcar-du: Add support for the nomodeset kernel parameter Date: Wed, 15 Dec 2021 01:59:40 +0100 Message-Id: <20211215010008.2545520-33-javierm@redhat.com> X-Mailer: git-send-email 2.33.1 In-Reply-To: <20211215010008.2545520-1-javierm@redhat.com> References: <20211215010008.2545520-1-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: Kieran Bingham , Javier Martinez Canillas , Laurent Pinchart 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 systewm 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 --- drivers/gpu/drm/rcar-du/rcar_du_drv.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/rcar-du/rcar_du_drv.c b/drivers/gpu/drm/rcar-du/rcar_du_drv.c index 5612a9e7a905..7b676b2f0f06 100644 --- a/drivers/gpu/drm/rcar-du/rcar_du_drv.c +++ b/drivers/gpu/drm/rcar-du/rcar_du_drv.c @@ -699,6 +699,9 @@ static struct platform_driver rcar_du_platform_driver = { static int __init rcar_du_init(void) { + if (drm_firmware_drivers_only()) + return -ENODEV; + rcar_du_of_init(rcar_du_of_table); return platform_driver_register(&rcar_du_platform_driver);