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 X-Spam-Level: X-Spam-Status: No, score=-0.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by aws-us-west-2-korg-lkml-1.web.codeaurora.org (Postfix) with ESMTP id B4355C433EF for ; Tue, 12 Jun 2018 20:03:00 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 749702089C for ; Tue, 12 Jun 2018 20:03:00 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 749702089C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=siol.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S934658AbeFLUC5 (ORCPT ); Tue, 12 Jun 2018 16:02:57 -0400 Received: from mailoutvs51.siol.net ([185.57.226.242]:38885 "EHLO mail.siol.net" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S934592AbeFLUCy (ORCPT ); Tue, 12 Jun 2018 16:02:54 -0400 Received: from localhost (localhost [127.0.0.1]) by mail.siol.net (Zimbra) with ESMTP id 79D4C521ED2; Tue, 12 Jun 2018 22:02:52 +0200 (CEST) X-Virus-Scanned: amavisd-new at psrvmta12.zcs-production.pri Received: from mail.siol.net ([127.0.0.1]) by localhost (psrvmta12.zcs-production.pri [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id BzYHxasOysi1; Tue, 12 Jun 2018 22:02:51 +0200 (CEST) Received: from mail.siol.net (localhost [127.0.0.1]) by mail.siol.net (Zimbra) with ESMTPS id D9B43521279; Tue, 12 Jun 2018 22:02:51 +0200 (CEST) Received: from localhost.localdomain (unknown [194.152.15.144]) (Authenticated sender: 031275009) by mail.siol.net (Zimbra) with ESMTPSA id 58AA0522020; Tue, 12 Jun 2018 22:02:49 +0200 (CEST) From: Jernej Skrabec To: maxime.ripard@bootlin.com, wens@csie.org, robh+dt@kernel.org Cc: airlied@linux.ie, gustavo@padovan.org, maarten.lankhorst@linux.intel.com, seanpaul@chromium.org, mark.rutland@arm.com, dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-clk@vger.kernel.org, linux-sunxi@googlegroups.com Subject: [PATCH v2 25/27] drm/sun4i: DW HDMI: Expand algorithm for possible crtcs Date: Tue, 12 Jun 2018 22:00:34 +0200 Message-Id: <20180612200036.21483-26-jernej.skrabec@siol.net> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20180612200036.21483-1-jernej.skrabec@siol.net> References: <20180612200036.21483-1-jernej.skrabec@siol.net> Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org drm_of_find_possible_crtcs() doesn't work when DW HDMI encoder is connected to TCON (crtc) through mux in TCON TOP. In that case TCON TOP HDMI mux input port has to be manually traversed and checked if it matches any known crtc. Signed-off-by: Jernej Skrabec --- drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c | 46 ++++++++++++++++++++++++++- 1 file changed, 45 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c index 9f40a44b456b..d443886e055b 100644 --- a/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c +++ b/drivers/gpu/drm/sun4i/sun8i_dw_hdmi.c @@ -12,6 +12,7 @@ #include #include "sun8i_dw_hdmi.h" +#include "sun8i_tcon_top.h" static void sun8i_dw_hdmi_encoder_mode_set(struct drm_encoder *encoder, struct drm_display_mode *mode, @@ -41,6 +42,48 @@ sun8i_dw_hdmi_mode_valid(struct drm_connector *connector, return MODE_OK; } +static bool sun8i_dw_hdmi_node_is_tcon_top(struct device_node *node) +{ + return !!of_match_node(sun8i_tcon_top_of_table, node); +} + +static u32 sun8i_dw_hdmi_find_possible_crtcs(struct drm_device *drm, + struct device_node *node) +{ + struct device_node *port, *ep, *remote, *remote_port; + u32 crtcs = 0; + + port = of_graph_get_port_by_id(node, 0); + if (!port) + return 0; + + ep = of_get_next_available_child(port, NULL); + if (!ep) + return 0; + + remote = of_graph_get_remote_port_parent(ep); + if (!remote) + return 0; + + if (sun8i_dw_hdmi_node_is_tcon_top(remote)) { + port = of_graph_get_port_by_id(remote, 4); + if (!port) + return 0; + + for_each_child_of_node(port, ep) { + remote_port = of_graph_get_remote_port(ep); + if (remote_port) { + crtcs |= drm_crtc_port_mask(drm, remote_port); + of_node_put(remote_port); + } + } + } else { + crtcs = drm_of_find_possible_crtcs(drm, node); + } + + return crtcs; +} + static int sun8i_dw_hdmi_bind(struct device *dev, struct device *master, void *data) { @@ -63,7 +106,8 @@ static int sun8i_dw_hdmi_bind(struct device *dev, struct device *master, hdmi->dev = &pdev->dev; encoder = &hdmi->encoder; - encoder->possible_crtcs = drm_of_find_possible_crtcs(drm, dev->of_node); + encoder->possible_crtcs = + sun8i_dw_hdmi_find_possible_crtcs(drm, dev->of_node); /* * If we failed to find the CRTC(s) which this encoder is * supposed to be connected to, it's because the CRTC has -- 2.17.1