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=-18.8 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,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 D74C3C433EF for ; Fri, 10 Sep 2021 10:14:40 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C4B516103D for ; Fri, 10 Sep 2021 10:14:40 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232566AbhIJKPu (ORCPT ); Fri, 10 Sep 2021 06:15:50 -0400 Received: from wnew4-smtp.messagingengine.com ([64.147.123.18]:34757 "EHLO wnew4-smtp.messagingengine.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232665AbhIJKPl (ORCPT ); Fri, 10 Sep 2021 06:15:41 -0400 Received: from compute4.internal (compute4.nyi.internal [10.202.2.44]) by mailnew.west.internal (Postfix) with ESMTP id 60FD42B013F1; Fri, 10 Sep 2021 06:14:27 -0400 (EDT) Received: from mailfrontend2 ([10.202.2.163]) by compute4.internal (MEProxy); Fri, 10 Sep 2021 06:14:29 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=cerno.tech; h= from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; s=fm3; bh=ZV6el4YX6dedj o34GTWvzQgjR2wYBy7cKjJm/jNj3xQ=; b=wO+M2W8Mx8twoZJW9pKCl9vsif2IL EbeVzaTynLZLq2fuI7wn8AEQAiyavoDZsko0HanD3YQGc45W24e9kuHabJ+Yp8pQ GGaXI8ZEE+mzngpDrwl5+WOziP6alFABZoxplG/gc1dTFioSUTkjCjHFNSD5isZL Sn7CA0BmtZ6bfV1/IpVONXeEpfNnF2OzNl8zm7+WgCqr1NxATQmv2bVSsLSJst8w Ij3NW0DPvxFcn6ZZ4Q1xOGL938g7rYMiwkJoRC2sxj2azpNiXgGOM4Lgzqw8vGhf e29JCJQ92HWPf9eHTW9EzsqspSAwOkarBoIlYnncvzCvp39Mny8d/Y+TQ== DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= messagingengine.com; h=cc:content-transfer-encoding:date:from :in-reply-to:message-id:mime-version:references:subject:to :x-me-proxy:x-me-proxy:x-me-sender:x-me-sender:x-sasl-enc; s= fm3; bh=ZV6el4YX6dedjo34GTWvzQgjR2wYBy7cKjJm/jNj3xQ=; b=KOSX9aqq 5Ez9d/Qaf0ZkHwOVqYSp9KAMpj2hUWtFg9MZqw6eZSYB38KyFfBsJSg2Z9t6p3W7 b1qFShq8K80v9Rq/mh2njqoayB2KEGwrM0bQ5RYxXI1wVQop7cFLMtIj8dlngsme dITROKaQLjkAvcyQQKEd07ZPflGk5nt9gC2LnsutqwTzvzKog8BzL0duwhwoO5g9 BqGk14nyE/PUJSGHRZ5hP3wFnawSAFe54eqgEWCY8T8YIw/48ZhYC4RCmu/STNvc 2uENyIJFabtcyHG7z2aG8Us9PD5ZR/aLnP/7eENto+SmjzPOmuyPFHzglvXQKd4o kSO1gQJydQCKmA== X-ME-Sender: X-ME-Received: X-ME-Proxy-Cause: gggruggvucftvghtrhhoucdtuddrgedvtddrudeguddgvdehucetufdoteggodetrfdotf fvucfrrhhofhhilhgvmecuhfgrshhtofgrihhlpdfqfgfvpdfurfetoffkrfgpnffqhgen uceurghilhhouhhtmecufedttdenucesvcftvggtihhpihgvnhhtshculddquddttddmne cujfgurhephffvufffkffojghfggfgsedtkeertdertddtnecuhfhrohhmpeforgigihhm vgcutfhiphgrrhguuceomhgrgihimhgvsegtvghrnhhordhtvggthheqnecuggftrfgrth htvghrnhepvdekleevfeffkeejhfffueelteelfeduieefheduudfggffhhfffheevveeh hedvnecuvehluhhsthgvrhfuihiivgepvdenucfrrghrrghmpehmrghilhhfrhhomhepmh grgihimhgvsegtvghrnhhordhtvggthh X-ME-Proxy: Received: by mail.messagingengine.com (Postfix) with ESMTPA; Fri, 10 Sep 2021 06:14:26 -0400 (EDT) From: Maxime Ripard To: Andrzej Hajda , Sam Ravnborg , Daniel Vetter , David Airlie , Jonas Karlman , Laurent Pinchart , Thierry Reding , Maarten Lankhorst , Thomas Zimmermann , Maxime Ripard , Neil Armstrong , Robert Foss , Jernej Skrabec Cc: Sean Paul , freedreno@lists.freedesktop.org, Kyungmin Park , linux-kernel@vger.kernel.org, Xinliang Liu , Seung-Woo Kim , Tian Tao , Inki Dae , linux-samsung-soc@vger.kernel.org, linux-arm-msm@vger.kernel.org, Rob Clark , dri-devel@lists.freedesktop.org, John Stultz , Chen Feng , Xinwei Kong , Joonyoung Shim Subject: [PATCH v4 22/24] drm/bridge: tc358775: Register and attach our DSI device at probe Date: Fri, 10 Sep 2021 12:12:16 +0200 Message-Id: <20210910101218.1632297-23-maxime@cerno.tech> X-Mailer: git-send-email 2.31.1 In-Reply-To: <20210910101218.1632297-1-maxime@cerno.tech> References: <20210910101218.1632297-1-maxime@cerno.tech> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org In order to avoid any probe ordering issue, the best practice is to move the secondary MIPI-DSI device registration and attachment to the MIPI-DSI host at probe time. Let's do this. Signed-off-by: Maxime Ripard --- drivers/gpu/drm/bridge/tc358775.c | 37 +++++++++++++++++++++---------- 1 file changed, 25 insertions(+), 12 deletions(-) diff --git a/drivers/gpu/drm/bridge/tc358775.c b/drivers/gpu/drm/bridge/tc358775.c index 35e66d1b6456..2c76331b251d 100644 --- a/drivers/gpu/drm/bridge/tc358775.c +++ b/drivers/gpu/drm/bridge/tc358775.c @@ -594,11 +594,26 @@ static int tc_bridge_attach(struct drm_bridge *bridge, enum drm_bridge_attach_flags flags) { struct tc_data *tc = bridge_to_tc(bridge); + + /* Attach the panel-bridge to the dsi bridge */ + return drm_bridge_attach(bridge->encoder, tc->panel_bridge, + &tc->bridge, flags); +} + +static const struct drm_bridge_funcs tc_bridge_funcs = { + .attach = tc_bridge_attach, + .pre_enable = tc_bridge_pre_enable, + .enable = tc_bridge_enable, + .mode_valid = tc_mode_valid, + .post_disable = tc_bridge_post_disable, +}; + +static int tc_attach_host(struct tc_data *tc) +{ struct device *dev = &tc->i2c->dev; struct mipi_dsi_host *host; struct mipi_dsi_device *dsi; int ret; - const struct mipi_dsi_device_info info = { .type = "tc358775", .channel = 0, .node = NULL, @@ -628,19 +643,9 @@ static int tc_bridge_attach(struct drm_bridge *bridge, return ret; } - /* Attach the panel-bridge to the dsi bridge */ - return drm_bridge_attach(bridge->encoder, tc->panel_bridge, - &tc->bridge, flags); + return 0; } -static const struct drm_bridge_funcs tc_bridge_funcs = { - .attach = tc_bridge_attach, - .pre_enable = tc_bridge_pre_enable, - .enable = tc_bridge_enable, - .mode_valid = tc_mode_valid, - .post_disable = tc_bridge_post_disable, -}; - static int tc_probe(struct i2c_client *client, const struct i2c_device_id *id) { struct device *dev = &client->dev; @@ -704,7 +709,15 @@ static int tc_probe(struct i2c_client *client, const struct i2c_device_id *id) i2c_set_clientdata(client, tc); + ret = tc_attach_host(tc); + if (ret) + goto err_bridge_remove; + return 0; + +err_bridge_remove: + drm_bridge_remove(&tc->bridge); + return ret; } static int tc_remove(struct i2c_client *client) -- 2.31.1