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=unavailable 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 0585EC07E95 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 E44526162A for ; Sun, 4 Jul 2021 09:05:13 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229722AbhGDJHs (ORCPT ); Sun, 4 Jul 2021 05:07:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60114 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229492AbhGDJHr (ORCPT ); Sun, 4 Jul 2021 05:07:47 -0400 Received: from mail-pj1-x1034.google.com (mail-pj1-x1034.google.com [IPv6:2607:f8b0:4864:20::1034]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 70194C061764 for ; Sun, 4 Jul 2021 02:05:12 -0700 (PDT) Received: by mail-pj1-x1034.google.com with SMTP id ie21so7831488pjb.0 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=QNFjwYhuSkDSjwRjBBf9+HALkRwxHjqgBN7tGcZYC9UvonBvw0pScxf37snK3kkPsJ 9+iCKRMDBEOnnmGNO9h40oonsk13PIDdaatxAUEeENqSwIYdbAiygehDG+woS1a5GZNz 0XVz+qxEBabjFKJf67oVMe4wDIMF7IBvvCpbdbPuvqTHA9l68KDoNA8BdZTsaeGxmgSu fTPVjMSw76drXtyGq66AXfWoMxg23gdU2XhC6ZG8OljV7TmeIPyYRXPYAvehiajaku7s l2IWT+2tm54Kz6Uzd2gUOMek+gkdnjtuSAhsTHHY36bJo5S7yXqIHf32/riEnsTbyHJp oJhA== X-Gm-Message-State: AOAM532b4b+qYWZPIkJCtfUSx3btRlvwrsoZxlxycZZBNzUZ7Hd3mfbY bzPr8vAXELJttkw1th2V8BFe6g== 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: devicetree@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