From patchwork Tue Feb 8 08:42:32 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Hsin-Yi Wang X-Patchwork-Id: 12738348 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id EE2CDC4332F for ; Tue, 8 Feb 2022 08:42:46 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 32F7B10E55A; Tue, 8 Feb 2022 08:42:42 +0000 (UTC) Received: from mail-pl1-x62c.google.com (mail-pl1-x62c.google.com [IPv6:2607:f8b0:4864:20::62c]) by gabe.freedesktop.org (Postfix) with ESMTPS id 8842410E42F for ; Tue, 8 Feb 2022 08:42:40 +0000 (UTC) Received: by mail-pl1-x62c.google.com with SMTP id 10so5360348plj.1 for ; Tue, 08 Feb 2022 00:42:40 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=chromium.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ZhwLsKgmug/LRenPO4tfGgZqEWLMYU+fvdrOVAURH3s=; b=Vkl+vynjUM51RqMEm6hc747W8khYbhvL5/qYvEKRlmgrdaUW3Os9zs0yzSi/jaG+F0 ZjQMv2fVx+TMavj/WOX1KvUW+Cm94gUvefnTe1HzIaWZbhMNTyHbhFtCgj66jqFb4CzX QOTw4Gp0OM2viucwhKZdwqXz6HkS3kdf2VGcA= X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=ZhwLsKgmug/LRenPO4tfGgZqEWLMYU+fvdrOVAURH3s=; b=CDLalrf0xMc9axp9H4Te5qOsxn0QSB71DoHjIq7WAQKV14dYl/FPAZquaMh1YhrwtW 9vGqGor5n8sZkOTbBGyOuA40eHSWgmPiOIyuI5Z2+TGMBFps2AthLxuEz0L/Ekj9RQx+ xnxJBj96yoqxwXH1UgbCTaCFQmE2ArqklgkzmDsO4SmYMqppCACZTMYSIJTqE8l7ueCU xQITonLI4JeGpnzrf65Jz6q0SXjhFvdOcqYdHklpVTvCcnsRgc8Uu7WCd4QYY9cXkiK6 Ue2ufcT5s3XS96D1W0MqE4+iCF/lnA3gBB2r7aJzfFd5U4Vx0u66C2ZIRv3dQJmjQu02 924Q== X-Gm-Message-State: AOAM531boqnCVzITY0tH53x/UwVYigfc9kObApZtxRpu4kGDZDdDg0fB eqTAVctDPzPCst9qz7MOsACe9tYSOTVYVg== X-Google-Smtp-Source: ABdhPJwzo+N00PLczwH8aUY/AY0oPF2jSOF6dGlpW/jQcDkmK7hKjrKYCbbfX5ATisM8Z14A9ENepg== X-Received: by 2002:a17:90b:1c06:: with SMTP id oc6mr143971pjb.213.1644309759797; Tue, 08 Feb 2022 00:42:39 -0800 (PST) Received: from hsinyi-z840.tpe.corp.google.com ([2401:fa00:1:10:7d9a:166e:9d34:ff4f]) by smtp.gmail.com with ESMTPSA id m14sm15362390pfc.170.2022.02.08.00.42.36 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Feb 2022 00:42:39 -0800 (PST) From: Hsin-Yi Wang To: dri-devel@lists.freedesktop.org, David Airlie , Daniel Vetter , amd-gfx@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [PATCH v8 1/3] gpu: drm: separate panel orientation property creating and value setting Date: Tue, 8 Feb 2022 16:42:32 +0800 Message-Id: <20220208084234.1684930-1-hsinyi@chromium.org> X-Mailer: git-send-email 2.35.0.263.gb82422642f-goog MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Chun-Kuang Hu , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Alex Deucher , Rob Herring , linux-mediatek@lists.infradead.org, Thomas Zimmermann , Matthias Brugger , Sean Paul , linux-arm-kernel@lists.infradead.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" drm_dev_register() sets connector->registration_state to DRM_CONNECTOR_REGISTERED and dev->registered to true. If drm_connector_set_panel_orientation() is first called after drm_dev_register(), it will fail several checks and results in following warning. Add a function to create panel orientation property and set default value to UNKNOWN, so drivers can call this function to init the property earlier , and let the panel set the real value later. [ 4.480976] ------------[ cut here ]------------ [ 4.485603] WARNING: CPU: 5 PID: 369 at drivers/gpu/drm/drm_mode_object.c:45 __drm_mode_object_add+0xb4/0xbc [ 4.609772] Call trace: [ 4.612208] __drm_mode_object_add+0xb4/0xbc [ 4.616466] drm_mode_object_add+0x20/0x2c [ 4.620552] drm_property_create+0xdc/0x174 [ 4.624723] drm_property_create_enum+0x34/0x98 [ 4.629241] drm_connector_set_panel_orientation+0x64/0xa0 [ 4.634716] boe_panel_get_modes+0x88/0xd8 [ 4.638802] drm_panel_get_modes+0x2c/0x48 [ 4.642887] panel_bridge_get_modes+0x1c/0x28 [ 4.647233] drm_bridge_connector_get_modes+0xa0/0xd4 [ 4.652273] drm_helper_probe_single_connector_modes+0x218/0x700 [ 4.658266] drm_mode_getconnector+0x1b4/0x45c [ 4.662699] drm_ioctl_kernel+0xac/0x128 [ 4.666611] drm_ioctl+0x268/0x410 [ 4.670002] drm_compat_ioctl+0xdc/0xf0 [ 4.673829] __arm64_compat_sys_ioctl+0xc8/0x100 [ 4.678436] el0_svc_common+0xf4/0x1c0 [ 4.682174] do_el0_svc_compat+0x28/0x3c [ 4.686088] el0_svc_compat+0x10/0x1c [ 4.689738] el0_sync_compat_handler+0xa8/0xcc [ 4.694171] el0_sync_compat+0x178/0x180 [ 4.698082] ---[ end trace b4f2db9d9c88610b ]--- [ 4.702721] ------------[ cut here ]------------ [ 4.707329] WARNING: CPU: 5 PID: 369 at drivers/gpu/drm/drm_mode_object.c:243 drm_object_attach_property+0x48/0xb8 [ 4.833830] Call trace: [ 4.836266] drm_object_attach_property+0x48/0xb8 [ 4.840958] drm_connector_set_panel_orientation+0x84/0xa0 [ 4.846432] boe_panel_get_modes+0x88/0xd8 [ 4.850516] drm_panel_get_modes+0x2c/0x48 [ 4.854600] panel_bridge_get_modes+0x1c/0x28 [ 4.858946] drm_bridge_connector_get_modes+0xa0/0xd4 [ 4.863984] drm_helper_probe_single_connector_modes+0x218/0x700 [ 4.869978] drm_mode_getconnector+0x1b4/0x45c [ 4.874410] drm_ioctl_kernel+0xac/0x128 [ 4.878320] drm_ioctl+0x268/0x410 [ 4.881711] drm_compat_ioctl+0xdc/0xf0 [ 4.885536] __arm64_compat_sys_ioctl+0xc8/0x100 [ 4.890142] el0_svc_common+0xf4/0x1c0 [ 4.893879] do_el0_svc_compat+0x28/0x3c [ 4.897791] el0_svc_compat+0x10/0x1c [ 4.901441] el0_sync_compat_handler+0xa8/0xcc [ 4.905873] el0_sync_compat+0x178/0x180 [ 4.909783] ---[ end trace b4f2db9d9c88610c ]--- Signed-off-by: Hsin-Yi Wang Reviewed-by: Sean Paul --- v7->v8: - check if the prop is created to avoid leak issue when called multiple times. - attempt to create prop in drm_connector_set_panel_orientation if prop is not created before, so driver don't need to call drm_connector_init_panel_orientation_property if they don't need to set the property earlier. --- drivers/gpu/drm/drm_connector.c | 62 ++++++++++++++++++++++++--------- include/drm/drm_connector.h | 2 ++ 2 files changed, 48 insertions(+), 16 deletions(-) diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index a50c82bc2b2fec..572ead7ac10690 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -1252,7 +1252,7 @@ static const struct drm_prop_enum_list dp_colorspaces[] = { * INPUT_PROP_DIRECT) will still map 1:1 to the actual LCD panel * coordinates, so if userspace rotates the picture to adjust for * the orientation it must also apply the same transformation to the - * touchscreen input coordinates. This property is initialized by calling + * touchscreen input coordinates. This property value is set by calling * drm_connector_set_panel_orientation() or * drm_connector_set_panel_orientation_with_quirk() * @@ -2341,8 +2341,8 @@ EXPORT_SYMBOL(drm_connector_set_vrr_capable_property); * @connector: connector for which to set the panel-orientation property. * @panel_orientation: drm_panel_orientation value to set * - * This function sets the connector's panel_orientation and attaches - * a "panel orientation" property to the connector. + * This function sets the connector's panel_orientation value. If the property + * doesn't exist, it will try to create one. * * Calling this function on a connector where the panel_orientation has * already been set is a no-op (e.g. the orientation has been overridden with @@ -2373,19 +2373,12 @@ int drm_connector_set_panel_orientation( info->panel_orientation = panel_orientation; prop = dev->mode_config.panel_orientation_property; - if (!prop) { - prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, - "panel orientation", - drm_panel_orientation_enum_list, - ARRAY_SIZE(drm_panel_orientation_enum_list)); - if (!prop) - return -ENOMEM; - - dev->mode_config.panel_orientation_property = prop; - } + if (!prop && + drm_connector_init_panel_orientation_property(connector) < 0) + return -ENOMEM; - drm_object_attach_property(&connector->base, prop, - info->panel_orientation); + drm_object_property_set_value(&connector->base, prop, + info->panel_orientation); return 0; } EXPORT_SYMBOL(drm_connector_set_panel_orientation); @@ -2393,7 +2386,7 @@ EXPORT_SYMBOL(drm_connector_set_panel_orientation); /** * drm_connector_set_panel_orientation_with_quirk - set the * connector's panel_orientation after checking for quirks - * @connector: connector for which to init the panel-orientation property. + * @connector: connector for which to set the panel-orientation property. * @panel_orientation: drm_panel_orientation value to set * @width: width in pixels of the panel, used for panel quirk detection * @height: height in pixels of the panel, used for panel quirk detection @@ -2420,6 +2413,43 @@ int drm_connector_set_panel_orientation_with_quirk( } EXPORT_SYMBOL(drm_connector_set_panel_orientation_with_quirk); +/** + * drm_connector_init_panel_orientation_property - + * create the connector's panel orientation property + * + * This function attaches a "panel orientation" property to the connector + * and initializes its value to DRM_MODE_PANEL_ORIENTATION_UNKNOWN. + * + * The value of the property can be set by drm_connector_set_panel_orientation() + * or drm_connector_set_panel_orientation_with_quirk() later. + * + * Returns: + * Zero on success, negative errno on failure. + */ +int drm_connector_init_panel_orientation_property( + struct drm_connector *connector) +{ + struct drm_device *dev = connector->dev; + struct drm_property *prop; + + if(dev->mode_config.panel_orientation_property) + return 0; + + prop = drm_property_create_enum(dev, DRM_MODE_PROP_IMMUTABLE, + "panel orientation", + drm_panel_orientation_enum_list, + ARRAY_SIZE(drm_panel_orientation_enum_list)); + if (!prop) + return -ENOMEM; + + dev->mode_config.panel_orientation_property = prop; + drm_object_attach_property(&connector->base, prop, + DRM_MODE_PANEL_ORIENTATION_UNKNOWN); + + return 0; +} +EXPORT_SYMBOL(drm_connector_init_panel_orientation_property); + static const struct drm_prop_enum_list privacy_screen_enum[] = { { PRIVACY_SCREEN_DISABLED, "Disabled" }, { PRIVACY_SCREEN_ENABLED, "Enabled" }, diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 64cf5f88c05b6a..d3448a71bb4d85 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -1798,6 +1798,8 @@ int drm_connector_set_panel_orientation_with_quirk( struct drm_connector *connector, enum drm_panel_orientation panel_orientation, int width, int height); +int drm_connector_init_panel_orientation_property( + struct drm_connector *connector); int drm_connector_attach_max_bpc_property(struct drm_connector *connector, int min, int max); void drm_connector_create_privacy_screen_properties(struct drm_connector *conn);