From patchwork Mon Mar 21 13:52:51 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 12787269 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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (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 B58F5C433F5 for ; Mon, 21 Mar 2022 14:01:40 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:Cc:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=6m/yKnkAv2u60nMbgsJKMo4gbP8kvRmkd3/jmfVBGWI=; b=hckd+UbjksdBcR QcOdqmVkM5NjigbHN7yPOOkEfUKzL7I1/K1dXzrDvQF4T8L917JEnda+bEKc5JmeVMdUxrCahIUEm It3m6IFsE3gSOwbILBO5q839Kx3G5Is7XtwpA1cq17vg2lIaTEy+hKSxOfC9vAH7Q7MtCzGj9sBno I1K3C6uO1V9mbsEbb6L3R2xJEt52bqE5ScrTxxSF/jGAsr6vzx0OPRoC0ANYWainGMGhzn3DxQnVN df7sr/DJjNtqL5G5bQt7PUOsFmnLXwou91dIZAKoiGJcQvAcnJhbjCDjV3HMyn+Z8czfvFUoRNGDd y6SpstDGeCJ708qNy4uQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1nWIa6-007wZ1-U2; Mon, 21 Mar 2022 14:00:23 +0000 Received: from ams.source.kernel.org ([145.40.68.75]) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1nWIa2-007wWn-S7 for linux-arm-kernel@lists.infradead.org; Mon, 21 Mar 2022 14:00:20 +0000 Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ams.source.kernel.org (Postfix) with ESMTPS id 54F6DB816EF; Mon, 21 Mar 2022 14:00:17 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C335CC340F2; Mon, 21 Mar 2022 14:00:14 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1647871215; bh=ZLNrGtC/1yYtaIEPvn2dN37TDlIhPm1AaMyY5zLM+o8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=L7NgKpvKl3q9avqaRcNYT4cF5OVB2Njhg6V/6NFTNzCmV8N6nR5CYGg4zR8tn0oNs 0XzNqdhFeKKiqsaF/PAz/FpIqS9CBgE82la5PICagMZnq4pyhnkb9hIzm7IT/tOxbJ vyFC+1NMT93lI+G79RQCu1fBChobyOyg1ilnteYk= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Christoph Niedermaier , Marek Vasut , Boris Brezillon , Philipp Zabel , David Airlie , Daniel Vetter , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , linux-arm-kernel@lists.infradead.org, Max Krummenacher , Maarten Lankhorst , Sasha Levin Subject: [PATCH 5.15 15/32] drm/imx: parallel-display: Remove bus flags check in imx_pd_bridge_atomic_check() Date: Mon, 21 Mar 2022 14:52:51 +0100 Message-Id: <20220321133221.004491467@linuxfoundation.org> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220321133220.559554263@linuxfoundation.org> References: <20220321133220.559554263@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220321_070019_261971_BA4CD0B4 X-CRM114-Status: GOOD ( 16.16 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Christoph Niedermaier [ Upstream commit 6061806a863e8b65b109eb06a280041cc7525442 ] If display timings were read from the devicetree using of_get_display_timing() and pixelclk-active is defined there, the flag DISPLAY_FLAGS_SYNC_POSEDGE/NEGEDGE is automatically generated. Through the function drm_bus_flags_from_videomode() e.g. called in the panel-simple driver this flag got into the bus flags, but then in imx_pd_bridge_atomic_check() the bus flag check failed and will not initialize the display. The original commit fe141cedc433 does not explain why this check was introduced. So remove the bus flags check, because it stops the initialization of the display with valid bus flags. Fixes: fe141cedc433 ("drm/imx: pd: Use bus format/flags provided by the bridge when available") Signed-off-by: Christoph Niedermaier Cc: Marek Vasut Cc: Boris Brezillon Cc: Philipp Zabel Cc: David Airlie Cc: Daniel Vetter Cc: Shawn Guo Cc: Sascha Hauer Cc: Pengutronix Kernel Team Cc: Fabio Estevam Cc: NXP Linux Team Cc: linux-arm-kernel@lists.infradead.org To: dri-devel@lists.freedesktop.org Tested-by: Max Krummenacher Acked-by: Boris Brezillon Signed-off-by: Marek Vasut Link: https://patchwork.freedesktop.org/patch/msgid/20220201113643.4638-1-cniedermaier@dh-electronics.com Signed-off-by: Maarten Lankhorst Signed-off-by: Sasha Levin --- drivers/gpu/drm/imx/parallel-display.c | 8 -------- 1 file changed, 8 deletions(-) diff --git a/drivers/gpu/drm/imx/parallel-display.c b/drivers/gpu/drm/imx/parallel-display.c index a8aba0141ce7..06cb1a59b9bc 100644 --- a/drivers/gpu/drm/imx/parallel-display.c +++ b/drivers/gpu/drm/imx/parallel-display.c @@ -217,14 +217,6 @@ static int imx_pd_bridge_atomic_check(struct drm_bridge *bridge, if (!imx_pd_format_supported(bus_fmt)) return -EINVAL; - if (bus_flags & - ~(DRM_BUS_FLAG_DE_LOW | DRM_BUS_FLAG_DE_HIGH | - DRM_BUS_FLAG_PIXDATA_DRIVE_POSEDGE | - DRM_BUS_FLAG_PIXDATA_DRIVE_NEGEDGE)) { - dev_warn(imxpd->dev, "invalid bus_flags (%x)\n", bus_flags); - return -EINVAL; - } - bridge_state->output_bus_cfg.flags = bus_flags; bridge_state->input_bus_cfg.flags = bus_flags; imx_crtc_state->bus_flags = bus_flags;