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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 07559C433EF for ; Fri, 17 Dec 2021 00:39:26 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231878AbhLQAjY (ORCPT ); Thu, 16 Dec 2021 19:39:24 -0500 Received: from us-smtp-delivery-124.mimecast.com ([170.10.133.124]:44324 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229817AbhLQAig (ORCPT ); Thu, 16 Dec 2021 19:38:36 -0500 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1639701515; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=LS45ptuKLtucyzrI9aH/fv6UqLJgOvCJlOd2PAEqfE8=; b=BiztDQu7PAD1cQ8p+KmsWNatiDRyeE3RMnn92Qq1adChB8QZihy4+MiNFS+E3azVUiR63t 3RbHjmQ162Hl9g0SwBq+kogWLc+iQHpRKjhsIG6DRCHuyS+6sk5XLypVr0XTXdtxwwj6XQ +lUFMUMVKfq6i5/gI63wydPP58Oj4kY= Received: from mail-wr1-f72.google.com (mail-wr1-f72.google.com [209.85.221.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-102-wnQaDBIkPf-7_a6pBOolGw-1; Thu, 16 Dec 2021 19:38:34 -0500 X-MC-Unique: wnQaDBIkPf-7_a6pBOolGw-1 Received: by mail-wr1-f72.google.com with SMTP id q21-20020adfab15000000b001a24b36e47eso148745wrc.2 for ; Thu, 16 Dec 2021 16:38:34 -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=LS45ptuKLtucyzrI9aH/fv6UqLJgOvCJlOd2PAEqfE8=; b=Zkw7pL3YiTlmwMYsPWHFKGJtt/Jie+jJ8JuvHO/1xztXZOK7aMJHg/nECvAwAeAMNW K6Exwm9zK03bABZTGD3zaCIHNW/bJhzdLBn8Q+rDQNMYEsPwEnVEYQpnh3poml+pocUy Fsma2GaJoBohanayJ4v59kJGHBCVbNYmI5NK8zfwdjWlWWBg+1TwOUvVhHEefyoGxu/5 kTpLCQ4B/erQRfBrv5DyDDqGa7c06XFalWL/Gwx3SuOLoZKO9Y7JI13EqzFhMJKe47Rz RPd7zHXJUZ0YPESZNXMhHdkcZ/HrLS7lq61L3UQDnTvF7KRZCcluHpRLE8RCK10Zjyqf XQSA== X-Gm-Message-State: AOAM532TNqGZeh/krfANdymgTOmD3Y2tACqRu/apgC7Rlb6zINlNa2Cr nxPr9BIptqPuZZw6n0JfnUQqWataZjo2ywYX/nbWJSq94T4LzIu+OeHBDz/dRFYut3FuVaEkUG3 B2vPGzaFEUi+heZ+VBRhByawmNWW6L/MR8tjiwiUPXPkleIXXvZfWryOWWpOWMvdKjcQHExoG79 k= X-Received: by 2002:adf:ed83:: with SMTP id c3mr369011wro.169.1639701512878; Thu, 16 Dec 2021 16:38:32 -0800 (PST) X-Google-Smtp-Source: ABdhPJzgNRxmXpv8ar/HlM4TfNJSibrarj6nNRlhhEoWvFkpXvNFl1qNA/H5nvze7GA/dpw0kCtyVQ== X-Received: by 2002:adf:ed83:: with SMTP id c3mr368998wro.169.1639701512577; Thu, 16 Dec 2021 16:38:32 -0800 (PST) Received: from minerva.home ([92.176.231.205]) by smtp.gmail.com with ESMTPSA id bg12sm7368433wmb.5.2021.12.16.16.38.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 16 Dec 2021 16:38:32 -0800 (PST) From: Javier Martinez Canillas To: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: Javier Martinez Canillas , Jyri Sarha , Tomi Valkeinen Subject: [PATCH v2 36/37] drm/tilcdc: Add support for the nomodeset kernel parameter Date: Fri, 17 Dec 2021 01:37:51 +0100 Message-Id: <20211217003752.3946210-37-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 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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/tilcdc/tilcdc_drv.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/gpu/drm/tilcdc/tilcdc_drv.c b/drivers/gpu/drm/tilcdc/tilcdc_drv.c index cc567c87057d..eee3c447fbac 100644 --- a/drivers/gpu/drm/tilcdc/tilcdc_drv.c +++ b/drivers/gpu/drm/tilcdc/tilcdc_drv.c @@ -604,6 +604,9 @@ static struct platform_driver tilcdc_platform_driver = { static int __init tilcdc_drm_init(void) { + if (drm_firmware_drivers_only()) + return -ENODEV; + DBG("init"); tilcdc_panel_init(); return platform_driver_register(&tilcdc_platform_driver); -- 2.33.1