From patchwork Mon Jun 25 12:02:47 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: =?utf-8?q?Jernej_=C5=A0krabec?= X-Patchwork-Id: 10488129 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 87853601A0 for ; Tue, 26 Jun 2018 07:25:10 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6E3422874C for ; Tue, 26 Jun 2018 07:25:10 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 60AE328787; Tue, 26 Jun 2018 07:25:10 +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 075DB2874C for ; Tue, 26 Jun 2018 07:25:10 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 798E36E42E; Tue, 26 Jun 2018 07:24:19 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail.siol.net (mailoutvs37.siol.net [185.57.226.228]) by gabe.freedesktop.org (Postfix) with ESMTPS id 4480C89DE3 for ; Mon, 25 Jun 2018 12:05:03 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mail.siol.net (Postfix) with ESMTP id BB1255208A2; Mon, 25 Jun 2018 14:05:01 +0200 (CEST) X-Virus-Scanned: amavisd-new at psrvmta10.zcs-production.pri Received: from mail.siol.net ([127.0.0.1]) by localhost (psrvmta10.zcs-production.pri [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id vfqmLX6rusnu; Mon, 25 Jun 2018 14:05:01 +0200 (CEST) Received: from mail.siol.net (localhost [127.0.0.1]) by mail.siol.net (Postfix) with ESMTPS id 3095D5208B6; Mon, 25 Jun 2018 14:05:01 +0200 (CEST) Received: from localhost.localdomain (unknown [194.152.15.144]) (Authenticated sender: 031275009) by mail.siol.net (Postfix) with ESMTPSA id 4D3A65208A2; Mon, 25 Jun 2018 14:04:58 +0200 (CEST) From: Jernej Skrabec To: maxime.ripard@bootlin.com, wens@csie.org, robh+dt@kernel.org Subject: [PATCH v3 07/24] drm/sun4i: Split out code for enumerating endpoints in output port Date: Mon, 25 Jun 2018 14:02:47 +0200 Message-Id: <20180625120304.7543-8-jernej.skrabec@siol.net> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180625120304.7543-1-jernej.skrabec@siol.net> References: <20180625120304.7543-1-jernej.skrabec@siol.net> X-Mailman-Approved-At: Tue, 26 Jun 2018 07:24:15 +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: mark.rutland@arm.com, devicetree@vger.kernel.org, airlied@linux.ie, linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-sunxi@googlegroups.com, linux-clk@vger.kernel.org, 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 Until now, each node has one input port and one output port. However, with TCON TOP this is no longer true. It has 3 input and 3 output ports. In order to prepare to this situation, split out the code which checks all endpoints in input port and adds available components to fifo. This patch doesn't do any functional change. Signed-off-by: Jernej Skrabec Reviewed-by: Chen-Yu Tsai --- drivers/gpu/drm/sun4i/sun4i_drv.c | 84 +++++++++++++++++-------------- 1 file changed, 46 insertions(+), 38 deletions(-) diff --git a/drivers/gpu/drm/sun4i/sun4i_drv.c b/drivers/gpu/drm/sun4i/sun4i_drv.c index e15fa2389e3f..20193d6f33ba 100644 --- a/drivers/gpu/drm/sun4i/sun4i_drv.c +++ b/drivers/gpu/drm/sun4i/sun4i_drv.c @@ -231,12 +231,55 @@ struct endpoint_list { DECLARE_KFIFO(fifo, struct device_node *, 16); }; +static void sun4i_drv_traverse_endpoints(struct endpoint_list *list, + struct device_node *node, + int port_id) +{ + struct device_node *ep, *remote, *port; + + port = of_graph_get_port_by_id(node, port_id); + if (!port) { + DRM_DEBUG_DRIVER("No output to bind on port %d\n", port_id); + return; + } + + for_each_available_child_of_node(port, ep) { + remote = of_graph_get_remote_port_parent(ep); + if (!remote) { + DRM_DEBUG_DRIVER("Error retrieving the output node\n"); + continue; + } + + /* + * If the node is our TCON, the first port is used for + * panel or bridges, and will not be part of the + * component framework. + */ + if (sun4i_drv_node_is_tcon(node)) { + struct of_endpoint endpoint; + + if (of_graph_parse_endpoint(ep, &endpoint)) { + DRM_DEBUG_DRIVER("Couldn't parse endpoint\n"); + of_node_put(remote); + continue; + } + + if (!endpoint.id) { + DRM_DEBUG_DRIVER("Endpoint is our panel... skipping\n"); + of_node_put(remote); + continue; + } + } + + kfifo_put(&list->fifo, remote); + } +} + static int sun4i_drv_add_endpoints(struct device *dev, struct endpoint_list *list, struct component_match **match, struct device_node *node) { - struct device_node *port, *ep, *remote; int count = 0; /* @@ -272,43 +315,8 @@ static int sun4i_drv_add_endpoints(struct device *dev, count++; } - /* Inputs are listed first, then outputs */ - port = of_graph_get_port_by_id(node, 1); - if (!port) { - DRM_DEBUG_DRIVER("No output to bind\n"); - return count; - } - - for_each_available_child_of_node(port, ep) { - remote = of_graph_get_remote_port_parent(ep); - if (!remote) { - DRM_DEBUG_DRIVER("Error retrieving the output node\n"); - continue; - } - - /* - * If the node is our TCON, the first port is used for - * panel or bridges, and will not be part of the - * component framework. - */ - if (sun4i_drv_node_is_tcon(node)) { - struct of_endpoint endpoint; - - if (of_graph_parse_endpoint(ep, &endpoint)) { - DRM_DEBUG_DRIVER("Couldn't parse endpoint\n"); - of_node_put(remote); - continue; - } - - if (!endpoint.id) { - DRM_DEBUG_DRIVER("Endpoint is our panel... skipping\n"); - of_node_put(remote); - continue; - } - } - - kfifo_put(&list->fifo, remote); - } + /* each node has at least one output */ + sun4i_drv_traverse_endpoints(list, node, 1); return count; }