From patchwork Sun Jul 4 09:02:15 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jagan Teki X-Patchwork-Id: 12357355 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 898FAC07E95 for ; Sun, 4 Jul 2021 09:04:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 7320861879 for ; Sun, 4 Jul 2021 09:04:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229502AbhGDJG5 (ORCPT ); Sun, 4 Jul 2021 05:06:57 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:59866 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229492AbhGDJG5 (ORCPT ); Sun, 4 Jul 2021 05:06:57 -0400 Received: from mail-pl1-x633.google.com (mail-pl1-x633.google.com [IPv6:2607:f8b0:4864:20::633]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id A767CC061762 for ; Sun, 4 Jul 2021 02:04:22 -0700 (PDT) Received: by mail-pl1-x633.google.com with SMTP id m15so3707723plx.7 for ; Sun, 04 Jul 2021 02:04:22 -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=pHZlmXfHQZBPoJbCqWFCiDNyc3ufmjpnvtmCga+L6Lg=; b=HdKfCR+M9d8PAb5qcM+B5/p30gYnobuh3hmVKGu66n+5Te/7kFF+1lP4+iNzezvBXj nQLuibZhWBa3njTRNVsRtL/8/fY5PVM4ZuxYwmuzeR4cd+7FStR+b9aXLsAGzUMvPdPU AdrdVMUiQlcbBkZfQmjM1C5jKQ8kZESByQsjI= 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=pHZlmXfHQZBPoJbCqWFCiDNyc3ufmjpnvtmCga+L6Lg=; b=MMZOxY3IPtRiqCoJTBrJwCHJVLv+q8BU3HL/in61F2m8x6QzbG6gLFvNb1wlQkdT4J dQgH8tAIvTvGEM41+pDa3UsIc8XU2MOqPYuAuU9264QHX0ZnYFsRHLehJqR6Dq9NJFPX d2LMyPrnFkpg69Rp3ldpN9wILwbXqhAqCKTPopVQzmlAoIMDcA2QnSVcZMyZ7Y0nHXOb Jo9XjiB4bEgzf3qurcG8BvnO/2K9lgy26SNHw2kXa0JGmng7N2ZAPS5ABFFS9eTnC0lr QqmchgX6BrGEBzgOMeaydTEU/csqgF4UnimIUgJX7KgXWuT/ZpH1ExVtWYcWOajH+m1w MHyQ== X-Gm-Message-State: AOAM532ZOVygxPHLnqzwdvd91yyJrnpOP9BF+sZ9IS5WDHOCPgqmCbBX dEHpTNo8lM1+k7ug9+RCIprxQg== X-Google-Smtp-Source: ABdhPJxISoBSmwp9LoTH6IvRjyAvOsFcHPaz0y+FHrOnPHhyh4+PNywwGDOghPqT55xz0PLyiOXSPg== X-Received: by 2002:a17:903:22c4:b029:129:8878:f872 with SMTP id y4-20020a17090322c4b02901298878f872mr132297plg.74.1625389462131; Sun, 04 Jul 2021 02:04:22 -0700 (PDT) Received: from localhost.localdomain ([2405:201:c00a:a884:1ae9:772f:6f0f:3e24]) by smtp.gmail.com with ESMTPSA id m24sm3360793pgd.60.2021.07.04.02.04.15 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Sun, 04 Jul 2021 02:04:21 -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 02/17] drm/exynos: dsi: Handle drm_device for bridge Date: Sun, 4 Jul 2021 14:32:15 +0530 Message-Id: <20210704090230.26489-3-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 Precedence: bulk List-ID: X-Mailing-List: linux-samsung-soc@vger.kernel.org Now the exynos dsi driver supports bridge and legacy encoder. In order to support drm_device in both the implementations it is required to preserve the drm_device in a private structure and use it accordingly. 1. encoder case, the bind will assign the drm_device into encoder->dev, so preserve the drm_device in the bind call. 2. bridge case, the drm_bridge_attach will assign the drm_device into bridge->dev, so preserve the drm_device in the bridge_attach function call. Signed-off-by: Jagan Teki --- drivers/gpu/drm/exynos/exynos_drm_dsi.c | 17 ++++++++++++----- 1 file changed, 12 insertions(+), 5 deletions(-) diff --git a/drivers/gpu/drm/exynos/exynos_drm_dsi.c b/drivers/gpu/drm/exynos/exynos_drm_dsi.c index 90d2ce2c3055..d7d60aee465b 100644 --- a/drivers/gpu/drm/exynos/exynos_drm_dsi.c +++ b/drivers/gpu/drm/exynos/exynos_drm_dsi.c @@ -259,6 +259,7 @@ struct exynos_dsi { struct list_head bridge_chain; struct drm_bridge bridge; struct drm_bridge *out_bridge; + struct drm_device *drm; struct device *dev; void __iomem *reg_base; @@ -1495,11 +1496,11 @@ static const struct drm_connector_helper_funcs exynos_dsi_connector_helper_funcs .get_modes = exynos_dsi_get_modes, }; -static int exynos_dsi_create_connector(struct exynos_dsi *dsi) +static int exynos_dsi_create_connector(struct exynos_dsi *dsi, + struct drm_device *drm) { struct drm_encoder *encoder = &dsi->encoder; struct drm_connector *connector = &dsi->connector; - struct drm_device *drm = encoder->dev; int ret; connector->polled = DRM_CONNECTOR_POLL_HPD; @@ -1526,6 +1527,10 @@ static int exynos_dsi_create_connector(struct exynos_dsi *dsi) static int exynos_dsi_bridge_attach(struct drm_bridge *bridge, enum drm_bridge_attach_flags flags) { + struct exynos_dsi *dsi = bridge_to_dsi(bridge); + + dsi->drm = bridge->dev; + return 0; } @@ -1542,7 +1547,7 @@ static int exynos_dsi_host_attach(struct mipi_dsi_host *host, { struct exynos_dsi *dsi = host_to_dsi(host); struct drm_encoder *encoder = &dsi->encoder; - struct drm_device *drm = encoder->dev; + struct drm_device *drm = dsi->drm; struct drm_bridge *out_bridge; out_bridge = of_drm_find_bridge(device->dev.of_node); @@ -1551,7 +1556,7 @@ static int exynos_dsi_host_attach(struct mipi_dsi_host *host, dsi->out_bridge = out_bridge; list_splice_init(&encoder->bridge_chain, &dsi->bridge_chain); } else { - int ret = exynos_dsi_create_connector(dsi); + int ret = exynos_dsi_create_connector(dsi, drm); if (ret) { DRM_DEV_ERROR(dsi->dev, @@ -1600,7 +1605,7 @@ static int exynos_dsi_host_detach(struct mipi_dsi_host *host, struct mipi_dsi_device *device) { struct exynos_dsi *dsi = host_to_dsi(host); - struct drm_device *drm = dsi->encoder.dev; + struct drm_device *drm = dsi->drm; if (dsi->panel) { mutex_lock(&drm->mode_config.mutex); @@ -1728,6 +1733,8 @@ static int exynos_dsi_bind(struct device *dev, struct device *master, of_node_put(in_bridge_node); } + dsi->drm = drm_dev; + return mipi_dsi_host_register(&dsi->dsi_host); }