From patchwork Fri Jul 6 17:51:05 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: 10513733 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 5574760318 for ; Mon, 9 Jul 2018 07:11:13 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 407A328A3F for ; Mon, 9 Jul 2018 07:11:13 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 34D0528A41; Mon, 9 Jul 2018 07:11:13 +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=-3.5 required=2.0 tests=BAYES_00, MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED,URIBL_BLACK 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 83F3628A3F for ; Mon, 9 Jul 2018 07:11:12 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 76F936E3BF; Mon, 9 Jul 2018 07:07:29 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail.siol.net (mailoutvs13.siol.net [185.57.226.204]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8CF826E288 for ; Fri, 6 Jul 2018 17:53:30 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by mail.siol.net (Postfix) with ESMTP id DB07A521137; Fri, 6 Jul 2018 19:53:28 +0200 (CEST) X-Virus-Scanned: amavisd-new at psrvmta11.zcs-production.pri Received: from mail.siol.net ([127.0.0.1]) by localhost (psrvmta11.zcs-production.pri [127.0.0.1]) (amavisd-new, port 10032) with ESMTP id QP4t-uaZED9k; Fri, 6 Jul 2018 19:53:28 +0200 (CEST) Received: from mail.siol.net (localhost [127.0.0.1]) by mail.siol.net (Postfix) with ESMTPS id 574815211D8; Fri, 6 Jul 2018 19:53:28 +0200 (CEST) Received: from localhost.localdomain (unknown [194.152.15.144]) (Authenticated sender: 031275009) by mail.siol.net (Postfix) with ESMTPSA id C5E1A521137; Fri, 6 Jul 2018 19:53:25 +0200 (CEST) From: Jernej Skrabec To: maxime.ripard@bootlin.com, wens@csie.org, robh+dt@kernel.org Subject: [PATCH 09/17] drm/sun4i: mixer: Read id from DT Date: Fri, 6 Jul 2018 19:51:05 +0200 Message-Id: <20180706175113.26698-10-jernej.skrabec@siol.net> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180706175113.26698-1-jernej.skrabec@siol.net> References: <20180706175113.26698-1-jernej.skrabec@siol.net> X-Mailman-Approved-At: Mon, 09 Jul 2018 07:06:44 +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-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 Currently, TCON supports 2 ways to match TCON with engine (mixer in this case). Old way is to just traverse of graph backwards and compare node pointer. New way is to match TCON and engine by their respective ids. All SoCs with DE2 enabled till now used the old way, which means mixer id was never used and thus never implemented. However, for R40, only the new way will be used. To prepare for that, implemend fetching mixer id from DT. Signed-off-by: Jernej Skrabec --- drivers/gpu/drm/sun4i/sun8i_mixer.c | 35 +++++++++++++++++++++++++++-- 1 file changed, 33 insertions(+), 2 deletions(-) diff --git a/drivers/gpu/drm/sun4i/sun8i_mixer.c b/drivers/gpu/drm/sun4i/sun8i_mixer.c index ee8febb25903..11221f96746d 100644 --- a/drivers/gpu/drm/sun4i/sun8i_mixer.c +++ b/drivers/gpu/drm/sun4i/sun8i_mixer.c @@ -23,6 +23,7 @@ #include #include #include +#include #include "sun4i_drv.h" #include "sun8i_mixer.h" @@ -322,6 +323,37 @@ static struct regmap_config sun8i_mixer_regmap_config = { .max_register = 0xbfffc, /* guessed */ }; +static int sun8i_mixer_of_get_id(struct device_node *node) +{ + struct device_node *port, *ep; + int ret = -EINVAL; + + /* output is port 1 */ + port = of_graph_get_port_by_id(node, 1); + if (!port) + return -EINVAL; + + /* try finding an upstream endpoint */ + for_each_available_child_of_node(port, ep) { + struct device_node *remote; + u32 reg; + + remote = of_graph_get_remote_endpoint(ep); + if (!remote) + continue; + + ret = of_property_read_u32(remote, "reg", ®); + if (ret) + continue; + + ret = reg; + } + + of_node_put(port); + + return ret; +} + static int sun8i_mixer_bind(struct device *dev, struct device *master, void *data) { @@ -353,8 +385,7 @@ static int sun8i_mixer_bind(struct device *dev, struct device *master, dev_set_drvdata(dev, mixer); mixer->engine.ops = &sun8i_engine_ops; mixer->engine.node = dev->of_node; - /* The ID of the mixer currently doesn't matter */ - mixer->engine.id = -1; + mixer->engine.id = sun8i_mixer_of_get_id(dev->of_node); mixer->cfg = of_device_get_match_data(dev); if (!mixer->cfg)