From patchwork Wed Dec 15 00:59:30 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: 12677135 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 7C533C433F5 for ; Wed, 15 Dec 2021 01:01:31 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 73E3D10E147; Wed, 15 Dec 2021 01:01:15 +0000 (UTC) Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.129.124]) by gabe.freedesktop.org (Postfix) with ESMTPS id C988F10E125 for ; Wed, 15 Dec 2021 01:01:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1639530071; 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=w0c98FUmzZ3jUKVD5DuVrEWMpnPkezkHOas2PJOy3Zk=; b=MbV4Y8EfXfT28tATdWotzkfLA9L1iqYvIdmmDA9ZV4pqRxvjYPQl95GmwMPe1rvHCY2eYS Dsm109KnpD4+wvae7ORFlpk3L7c9CtS8FtBr6j1TfnsK6/t4pL75yb+ELgMc4c1YrPIKUq VavZ3daIntOhVt0ebYDbtZ8GRvPN0VM= Received: from mail-wr1-f71.google.com (mail-wr1-f71.google.com [209.85.221.71]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-127-c3yIJL2zPjatjj9zs0w7sA-1; Tue, 14 Dec 2021 20:01:10 -0500 X-MC-Unique: c3yIJL2zPjatjj9zs0w7sA-1 Received: by mail-wr1-f71.google.com with SMTP id p17-20020adff211000000b0017b902a7701so5379251wro.19 for ; Tue, 14 Dec 2021 17:01:10 -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=w0c98FUmzZ3jUKVD5DuVrEWMpnPkezkHOas2PJOy3Zk=; b=QqSWrNWNYvGTAOC298oLnsSKYR/13oLSIb8TWy84B6cQiHQMPfiQ9fRhdVWG/7L0Ow a35M/qqPh2ar5MJ5JTZ6ohWYvy0awxXTo3GJcIQ4MqKIz4vT6RWfYesuMHFwLBSLf/kF R784Od3rrYgRBbn9DBr3qphyjL0JMG9VQNGQIseZzU5kZiwI1F2kmGfh89B/XJXptYte weyVgRV/8oeev8iUNOrXjF6xQL21JsAhAI87gjDebLD6EAUNDq9GeHM6Kc5Wr4ApRaXS 8y9GuohzggmlcgdLkqbpvP1ehrpntK64+WsqX5DcGHxfbgI4ZUj4UPUk7iLnvl4APiNx 9VDw== X-Gm-Message-State: AOAM532zA6+m4MEAzy+OW9m7A44LYeQp9EPPUbk+av3NJ0AiYb8aSBZl RZ92wbgJuK0wsvqZlCg4fbAehsMLpMTKvwJpibzB85fUAmuaNAiWQlK+zlomrxhxBVN8gKbfV+6 jopIida3n3OYbaH8iT5akN8qXVZMz X-Received: by 2002:adf:a386:: with SMTP id l6mr2088183wrb.505.1639530069307; Tue, 14 Dec 2021 17:01:09 -0800 (PST) X-Google-Smtp-Source: ABdhPJzUdw+6hFb6bAKvCZiXPJTU8S/eHCzIks+l31gbEogB1i2JCupJbK69RZm8jq89jgVfPqsgSA== X-Received: by 2002:adf:a386:: with SMTP id l6mr2088172wrb.505.1639530069114; Tue, 14 Dec 2021 17:01:09 -0800 (PST) Received: from minerva.home ([92.176.231.205]) by smtp.gmail.com with ESMTPSA id o64sm334543wme.28.2021.12.14.17.01.08 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Dec 2021 17:01:08 -0800 (PST) From: Javier Martinez Canillas To: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Subject: [PATCH 22/60] drm/mediatek: Add support for the nomodeset kernel parameter Date: Wed, 15 Dec 2021 01:59:30 +0100 Message-Id: <20211215010008.2545520-23-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: Chun-Kuang Hu , 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 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/mediatek/mtk_drm_drv.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/mediatek/mtk_drm_drv.c b/drivers/gpu/drm/mediatek/mtk_drm_drv.c index aec39724ebeb..e336358fee20 100644 --- a/drivers/gpu/drm/mediatek/mtk_drm_drv.c +++ b/drivers/gpu/drm/mediatek/mtk_drm_drv.c @@ -210,6 +210,9 @@ static int mtk_drm_kms_init(struct drm_device *drm) struct device *dma_dev; int ret; + if (drm_firmware_drivers_only()) + return -ENODEV; + if (!iommu_present(&platform_bus_type)) return -EPROBE_DEFER;