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=-18.7 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED, USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 05893C07E96 for ; Sun, 4 Jul 2021 09:05:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id D2AE961090 for ; Sun, 4 Jul 2021 09:05:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229720AbhGDJHs (ORCPT ); Sun, 4 Jul 2021 05:07:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60112 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229700AbhGDJHr (ORCPT ); Sun, 4 Jul 2021 05:07:47 -0400 Received: from mail-pj1-x102c.google.com (mail-pj1-x102c.google.com [IPv6:2607:f8b0:4864:20::102c]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 684DEC061762 for ; Sun, 4 Jul 2021 02:05:12 -0700 (PDT) Received: by mail-pj1-x102c.google.com with SMTP id b5-20020a17090a9905b029016fc06f6c5bso9460906pjp.5 for ; Sun, 04 Jul 2021 02:05:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amarulasolutions.com; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=cAMGUx6D5lcjN5rGbJFn80/U5mqs7hsNSGwdMUcGBEA=; b=bYcyLqXdvKSNW96jNDfbvT/WqZitouieNdGZZ/F/bhYnQIVg5ksKBJPcYevSnjEp1O EskwPy90LOG9t+H9ZSabO+crw1F7bP6UaHaeIMZ8nAjuxSoQtPBap9UbpOZJYs+Wx0V7 8KwrjDY0CSnyrNNpyyW9e29FsiiCAkRXZatjU= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20161025; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=cAMGUx6D5lcjN5rGbJFn80/U5mqs7hsNSGwdMUcGBEA=; b=ZVwzT9XP2zoi/r9EWOzz73p7f8q1eFMcqHhLov7U/vnKSOW80PacmLDpo3E1fvHG9u XsPkDKai2ciLBRBrZ+IbqWGEXKW/ydbrUNz6I+s//k4+krvprovwETGAOF5WMPvgtRIY dHHBWAfnUVuiKOP/OMCBdPYLaYWa74lwOGzXAlgXFQE74IgLqTE7TfqKxgJhyGT02iMf d/9Xrr67l0SVB7MT3m/6nxS11IX9l0S8L1n21qoXw7/ZKgxjHpA3wQaiDMvUpEmjQJTo v1hoxRtaN/7HglqzyNpyKi431X2Iy+VWKeQlA+Lr2343R+NDLEUYbPW1bSTsGZToBpfK HPAA== X-Gm-Message-State: AOAM533zmRiCBO1WH5/tXjZksGSxs6F4sYH5+qD9wNLSSsBP4J+CbrRp haM3kNaEewCNdd+bvFc7rZU3qg== X-Google-Smtp-Source: ABdhPJyBs1eGIfUyVYgcoPgmsW20xNsSAFXzQgGn0x4pQWnoXzWWJw64+lJgRiayk/Jqgnbg0A5yGg== X-Received: by 2002:a17:90b:792:: with SMTP id l18mr8895382pjz.55.1625389512016; Sun, 04 Jul 2021 02:05:12 -0700 (PDT) Received: from localhost.localdomain ([2405:201:c00a:a884:1ae9:772f:6f0f:3e24]) by smtp.gmail.com with ESMTPSA id m24sm3360793pgd.60.2021.07.04.02.05.06 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 04 Jul 2021 02:05:11 -0700 (PDT) From: Jagan Teki To: Inki Dae , Joonyoung Shim , Seung-Woo Kim , Kyungmin Park , Andrzej Hajda , Neil Armstrong , Robert Foss , Laurent Pinchart , Frieder Schrempf , Daniel Vetter , Marek Vasut , Krzysztof Kozlowski , Fabio Estevam Cc: dri-devel@lists.freedesktop.org, devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, NXP Linux Team , linux-amarula , Jagan Teki Subject: [RFC PATCH 10/17] drm: bridge: samsung-dsim: Update the of_node for port(s) Date: Sun, 4 Jul 2021 14:32:23 +0530 Message-Id: <20210704090230.26489-11-jagan@amarulasolutions.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210704090230.26489-1-jagan@amarulasolutions.com> References: <20210704090230.26489-1-jagan@amarulasolutions.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Existing bridge driver is able to find the panel or bridge if of_node isn't a port(s). This is how the exynos dsi node handling has been done so far. However in order to make use of this bridge in other or new supported platforms like i.MX8MM it is required to have a port based of_node. So, this patch will check if node is a port based and then update of_node. This way we can support the platforms which are using legacy or new DSI bindings. Signed-off-by: Jagan Teki --- drivers/gpu/drm/bridge/samsung-dsim.c | 19 ++++++++++++++----- 1 file changed, 14 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/bridge/samsung-dsim.c b/drivers/gpu/drm/bridge/samsung-dsim.c index 627580abd6df..2222c27feffd 100644 --- a/drivers/gpu/drm/bridge/samsung-dsim.c +++ b/drivers/gpu/drm/bridge/samsung-dsim.c @@ -226,6 +226,11 @@ enum samsung_dsim_transfer_type { EXYNOS_DSI_RX, }; +enum { + DSI_PORT_IN, + DSI_PORT_OUT +}; + struct samsung_dsim_transfer { struct list_head list; struct completion completed; @@ -1436,6 +1441,15 @@ static int samsung_dsim_panel_or_bridge(struct samsung_dsim *dsi, { struct drm_bridge *panel_bridge; struct drm_panel *panel; + struct device_node *remote; + + if (of_graph_is_present(node)) { + remote = of_graph_get_remote_node(node, DSI_PORT_OUT, 0); + if (!remote) + return -ENODEV; + + node = remote; + } panel_bridge = of_drm_find_bridge(node); if (!panel_bridge) { @@ -1579,11 +1593,6 @@ static int samsung_dsim_of_read_u32(const struct device_node *np, return ret; } -enum { - DSI_PORT_IN, - DSI_PORT_OUT -}; - static int samsung_dsim_parse_dt(struct samsung_dsim *dsi) { struct device *dev = dsi->dev; -- 2.25.1