From patchwork Wed Jul 1 02:21:26 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Dmitry Osipenko X-Patchwork-Id: 1320214 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=vger.kernel.org (client-ip=23.128.96.18; helo=vger.kernel.org; envelope-from=linux-tegra-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: ozlabs.org; dkim=pass (2048-bit key; unprotected) header.d=gmail.com header.i=@gmail.com header.a=rsa-sha256 header.s=20161025 header.b=WOZH3Nn9; dkim-atps=neutral Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by ozlabs.org (Postfix) with ESMTP id 49xQ5t4zJyz9sTV for ; Wed, 1 Jul 2020 12:24:18 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726957AbgGACYO (ORCPT ); Tue, 30 Jun 2020 22:24:14 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50954 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726847AbgGACX7 (ORCPT ); Tue, 30 Jun 2020 22:23:59 -0400 Received: from mail-lf1-x143.google.com (mail-lf1-x143.google.com [IPv6:2a00:1450:4864:20::143]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A7A33C03E979; Tue, 30 Jun 2020 19:23:58 -0700 (PDT) Received: by mail-lf1-x143.google.com with SMTP id t9so12655218lfl.5; Tue, 30 Jun 2020 19:23:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20161025; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=a5nZg8KheWIS8ObVaNA2RcCFchGpMXgRR/HHGM1BHBw=; b=WOZH3Nn9evGdNfNdegsmScfv681f/RyxGofCEPnYWGfspTEyGhonNre+yGBHn5bFfa sxTcaYeEaMnRWVLKe6dvl953jlQGCQ90o4ua4ivcGyBeLWZRJOINabmsrtxixKEvjfTs rbOv9o6+OeD7sJ5vR+COPvihHs5V3r5hDipoEF41JSOpjhY4i1iU3acV2Zg4TXZ1LabF J/TkePIkZrTOmGmyxPRnEKauahz/hGAbNE3AhAXj+cq3pUaNCKcoSaLRj/r2e3ZlZj3b NageNukvNfawQfIsidTyucHIEs5hhntMok1Rxq3MsKd2uiw0jxmGMBHY+EAUfqj4e1Jt 6Dzg== 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=a5nZg8KheWIS8ObVaNA2RcCFchGpMXgRR/HHGM1BHBw=; b=WRTcdkOqwiIHdrLnBxCfFqRZI+cw7tifWscqCCwKKflQBATydbJWRHHR4dflvNuS3h tgmumx29mbYJAU5ljYq6BpbQ6Ddd/aT5n/TuCBiYhLDXp5ck2NW02XPmKr3BhdcgMaKY viZxcL6Zl+r2n56cJW7Cq1qVWCADCNWrrP4txZHf9CbCvmtjZ2NhwHUCS75LutT8MeUx eKioCEk7rdmvnn43Pe3udX6LlgOk+eS6G6R4ajJYWsHNcHbfpS5o2c9IilGZFoch43AF kw5fy9cyzTkBA2dnVLwBkdQD0eh/bScJq576TLdctZs2BnyaQfxw2WIpcYswTR8dQ4aO h9ng== X-Gm-Message-State: AOAM530voMtzvE2OqEnnI06v+aCyGJHIZXRKM5AMf+vkP+sg5uIr0p3O 3I/cEo2l8DejvuKXjRnYDYQ= X-Google-Smtp-Source: ABdhPJxLkVvzwxeFv14SPpaqlsYj0gMEYB9Z7wtPKtzeNL3g1IL8KbUjYp/yAgjzyzyrDcB8Hs5VPA== X-Received: by 2002:ac2:569c:: with SMTP id 28mr13540340lfr.195.1593570237240; Tue, 30 Jun 2020 19:23:57 -0700 (PDT) Received: from localhost.localdomain (79-139-237-54.dynamic.spd-mgts.ru. [79.139.237.54]) by smtp.gmail.com with ESMTPSA id f21sm1303557ljj.121.2020.06.30.19.23.56 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 30 Jun 2020 19:23:56 -0700 (PDT) From: Dmitry Osipenko To: Thierry Reding , Sam Ravnborg , Laurent Pinchart Cc: dri-devel@lists.freedesktop.org, linux-tegra@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH v9 2/4] drm/tegra: output: Support DRM bridges Date: Wed, 1 Jul 2020 05:21:26 +0300 Message-Id: <20200701022128.12968-3-digetx@gmail.com> X-Mailer: git-send-email 2.26.0 In-Reply-To: <20200701022128.12968-1-digetx@gmail.com> References: <20200701022128.12968-1-digetx@gmail.com> MIME-Version: 1.0 Sender: linux-tegra-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-tegra@vger.kernel.org Newer Tegra device-trees will specify a video output graph which involves a bridge. This patch adds initial support for the DRM bridges to the Tegra DRM output. Acked-by: Sam Ravnborg Signed-off-by: Dmitry Osipenko --- drivers/gpu/drm/tegra/drm.h | 2 ++ drivers/gpu/drm/tegra/output.c | 12 ++++++++++++ 2 files changed, 14 insertions(+) diff --git a/drivers/gpu/drm/tegra/drm.h b/drivers/gpu/drm/tegra/drm.h index b25443255be6..f38de08e0c95 100644 --- a/drivers/gpu/drm/tegra/drm.h +++ b/drivers/gpu/drm/tegra/drm.h @@ -12,6 +12,7 @@ #include #include +#include #include #include #include @@ -116,6 +117,7 @@ struct tegra_output { struct device_node *of_node; struct device *dev; + struct drm_bridge *bridge; struct drm_panel *panel; struct i2c_adapter *ddc; const struct edid *edid; diff --git a/drivers/gpu/drm/tegra/output.c b/drivers/gpu/drm/tegra/output.c index a6a711d54e88..ccd1421f1b24 100644 --- a/drivers/gpu/drm/tegra/output.c +++ b/drivers/gpu/drm/tegra/output.c @@ -5,6 +5,7 @@ */ #include +#include #include #include @@ -99,8 +100,19 @@ int tegra_output_probe(struct tegra_output *output) if (!output->of_node) output->of_node = output->dev->of_node; + err = drm_of_find_panel_or_bridge(output->of_node, -1, -1, + &output->panel, &output->bridge); + if (err && err != -ENODEV) + return err; + panel = of_parse_phandle(output->of_node, "nvidia,panel", 0); if (panel) { + /* + * Don't mix nvidia,panel phandle with the graph in a + * device-tree. + */ + WARN_ON(output->panel || output->bridge); + output->panel = of_drm_find_panel(panel); of_node_put(panel);