From patchwork Wed Jun 26 13:32:14 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Robert Chiras X-Patchwork-Id: 11018975 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id CE66B14E5 for ; Thu, 27 Jun 2019 07:12:23 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id BCD99287B7 for ; Thu, 27 Jun 2019 07:12:23 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B15F028A39; Thu, 27 Jun 2019 07:12:23 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B11AB28A37 for ; Thu, 27 Jun 2019 07:12:22 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 161656E5D1; Thu, 27 Jun 2019 07:11:29 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from inva020.nxp.com (inva020.nxp.com [92.121.34.13]) by gabe.freedesktop.org (Postfix) with ESMTPS id 01CD36E430 for ; Wed, 26 Jun 2019 13:32:27 +0000 (UTC) Received: from inva020.nxp.com (localhost [127.0.0.1]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id A147A1A0FC7; Wed, 26 Jun 2019 15:32:26 +0200 (CEST) Received: from inva024.eu-rdc02.nxp.com (inva024.eu-rdc02.nxp.com [134.27.226.22]) by inva020.eu-rdc02.nxp.com (Postfix) with ESMTP id 93E311A0FC2; Wed, 26 Jun 2019 15:32:26 +0200 (CEST) Received: from fsr-ub1664-120.ea.freescale.net (fsr-ub1664-120.ea.freescale.net [10.171.82.81]) by inva024.eu-rdc02.nxp.com (Postfix) with ESMTP id E2272205DB; Wed, 26 Jun 2019 15:32:25 +0200 (CEST) From: Robert Chiras To: Marek Vasut , Stefan Agner , David Airlie , Daniel Vetter , Rob Herring , Mark Rutland , Shawn Guo , Sascha Hauer , Fabio Estevam Subject: [PATCH 06/10] drm/mxsfb: Add max-res property for MXSFB Date: Wed, 26 Jun 2019 16:32:14 +0300 Message-Id: <1561555938-21595-7-git-send-email-robert.chiras@nxp.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1561555938-21595-1-git-send-email-robert.chiras@nxp.com> References: <1561555938-21595-1-git-send-email-robert.chiras@nxp.com> X-Virus-Scanned: ClamAV using ClamSMTP X-Mailman-Approved-At: Thu, 27 Jun 2019 07:11:26 +0000 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, NXP Linux Team , Pengutronix Kernel Team , Robert Chiras , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP Because of stability issues, we may want to limit the maximum resolution supported by the MXSFB (eLCDIF) driver. This patch add support for a new property which we can use to impose such limitation. Signed-off-by: Robert Chiras --- drivers/gpu/drm/mxsfb/mxsfb_drv.c | 12 ++++++++++-- 1 file changed, 10 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/mxsfb/mxsfb_drv.c b/drivers/gpu/drm/mxsfb/mxsfb_drv.c index 64575df..9a1ee70 100644 --- a/drivers/gpu/drm/mxsfb/mxsfb_drv.c +++ b/drivers/gpu/drm/mxsfb/mxsfb_drv.c @@ -260,6 +260,7 @@ static int mxsfb_load(struct drm_device *drm, unsigned long flags) struct platform_device *pdev = to_platform_device(drm->dev); struct mxsfb_drm_private *mxsfb; struct resource *res; + u32 max_res[2] = {0, 0}; int ret; mxsfb = devm_kzalloc(&pdev->dev, sizeof(*mxsfb), GFP_KERNEL); @@ -340,10 +341,17 @@ static int mxsfb_load(struct drm_device *drm, unsigned long flags) } } + of_property_read_u32_array(drm->dev->of_node, "max-res", + &max_res[0], 2); + if (!max_res[0]) + max_res[0] = MXSFB_MAX_XRES; + if (!max_res[1]) + max_res[1] = MXSFB_MAX_YRES; + drm->mode_config.min_width = MXSFB_MIN_XRES; drm->mode_config.min_height = MXSFB_MIN_YRES; - drm->mode_config.max_width = MXSFB_MAX_XRES; - drm->mode_config.max_height = MXSFB_MAX_YRES; + drm->mode_config.max_width = max_res[0]; + drm->mode_config.max_height = max_res[1]; drm->mode_config.funcs = &mxsfb_mode_config_funcs; drm->mode_config.helper_private = &mxsfb_mode_config_helpers;