From patchwork Mon Oct 31 21:29:54 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Navare, Manasi" X-Patchwork-Id: 9406583 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 382CB60721 for ; Mon, 31 Oct 2016 21:28:29 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 27CD028C1C for ; Mon, 31 Oct 2016 21:28:29 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 1A01228D2C; Mon, 31 Oct 2016 21:28:29 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-4.2 required=2.0 tests=BAYES_00, RCVD_IN_DNSWL_MED autolearn=ham version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 7747928C1C for ; Mon, 31 Oct 2016 21:28:27 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 82B9F6E0D0; Mon, 31 Oct 2016 21:28:26 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by gabe.freedesktop.org (Postfix) with ESMTPS id DF0A76E07B; Mon, 31 Oct 2016 21:28:25 +0000 (UTC) Received: from orsmga001.jf.intel.com ([10.7.209.18]) by orsmga105.jf.intel.com with ESMTP; 31 Oct 2016 14:28:25 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos; i="5.31,428,1473145200"; d="scan'208"; a="1053167141" Received: from manasi-otcmedia.jf.intel.com ([10.7.199.175]) by orsmga001.jf.intel.com with ESMTP; 31 Oct 2016 14:28:25 -0700 From: Manasi Navare To: intel-gfx@lists.freedesktop.org Date: Mon, 31 Oct 2016 14:29:54 -0700 Message-Id: <1477949394-20483-1-git-send-email-manasi.d.navare@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1477703245-27375-2-git-send-email-manasi.d.navare@intel.com> References: <1477703245-27375-2-git-send-email-manasi.d.navare@intel.com> Cc: dri-devel@lists.freedesktop.org, Daniel Vetter Subject: [Intel-gfx] [PATCH v3 1/4] drm: Add a new connector property for link status X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP A new default connector property is added for keeping track of whether the link is good (link training passed) or link is bad (link training failed). If the link status property is not good, then userspace should fire off a new modeset at the current mode even if there have not been any changes in the mode list or connector status. Also add link status connector member corersponding to the decoded value of link status property. v3: * Drop "link training" from description since this is not specific to DP (Jani Nikula) * Add link status member to store property value locally (Ville Syrjala) v2: * Make this a default connector property (Daniel Vetter) Cc: dri-devel@lists.freedesktop.org Cc: Jani Nikula Cc: Daniel Vetter Cc: Ville Syrjala Cc: Chris Wilson Signed-off-by: Manasi Navare --- drivers/gpu/drm/drm_connector.c | 17 +++++++++++++++++ include/drm/drm_connector.h | 7 ++++++- include/drm/drm_crtc.h | 5 +++++ include/uapi/drm/drm_mode.h | 4 ++++ 4 files changed, 32 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index 2db7fb5..d4e852f 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -243,6 +243,10 @@ int drm_connector_init(struct drm_device *dev, drm_object_attach_property(&connector->base, config->dpms_property, 0); + drm_object_attach_property(&connector->base, + config->link_status_property, + 0); + if (drm_core_check_feature(dev, DRIVER_ATOMIC)) { drm_object_attach_property(&connector->base, config->prop_crtc_id, 0); } @@ -506,6 +510,12 @@ const char *drm_get_subpixel_order_name(enum subpixel_order order) }; DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list) +static const struct drm_prop_enum_list drm_link_status_enum_list[] = { + { DRM_MODE_LINK_STATUS_GOOD, "Good" }, + { DRM_MODE_LINK_STATUS_BAD, "Bad" }, +}; +DRM_ENUM_NAME_FN(drm_get_link_status_name, drm_link_status_enum_list) + /** * drm_display_info_set_bus_formats - set the supported bus formats * @info: display info to store bus formats in @@ -622,6 +632,13 @@ int drm_connector_create_standard_properties(struct drm_device *dev) return -ENOMEM; dev->mode_config.tile_property = prop; + prop = drm_property_create_enum(dev, 0, "link-status", + drm_link_status_enum_list, + ARRAY_SIZE(drm_link_status_enum_list)); + if (!prop) + return -ENOMEM; + dev->mode_config.link_status_property = prop; + return 0; } diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index ac9d7d8..5c335e8 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -682,6 +682,12 @@ struct drm_connector { uint8_t num_h_tile, num_v_tile; uint8_t tile_h_loc, tile_v_loc; uint16_t tile_h_size, tile_v_size; + + /* Connector Link status + * 0: If the link is Good + * 1: If the link is Bad + */ + int link_status; }; #define obj_to_connector(x) container_of(x, struct drm_connector, base) @@ -754,7 +760,6 @@ int drm_mode_create_tv_properties(struct drm_device *dev, int drm_mode_create_scaling_mode_property(struct drm_device *dev); int drm_mode_create_aspect_ratio_property(struct drm_device *dev); int drm_mode_create_suggested_offset_properties(struct drm_device *dev); - int drm_mode_connector_set_path_property(struct drm_connector *connector, const char *path); int drm_mode_connector_set_tile_property(struct drm_connector *connector); diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h index fa1aa21..737f4d3 100644 --- a/include/drm/drm_crtc.h +++ b/include/drm/drm_crtc.h @@ -1151,6 +1151,11 @@ struct drm_mode_config { */ struct drm_property *tile_property; /** + * @link_status_property: Default connector property for link status + * of a connector + */ + struct drm_property *link_status_property; + /** * @plane_type_property: Default plane property to differentiate * CURSOR, PRIMARY and OVERLAY legacy uses of planes. */ diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h index 084b50a..f1b0afd 100644 --- a/include/uapi/drm/drm_mode.h +++ b/include/uapi/drm/drm_mode.h @@ -121,6 +121,10 @@ #define DRM_MODE_DIRTY_ON 1 #define DRM_MODE_DIRTY_ANNOTATE 2 +/* Link Status options */ +#define DRM_MODE_LINK_STATUS_GOOD 0 +#define DRM_MODE_LINK_STATUS_BAD 1 + struct drm_mode_modeinfo { __u32 clock; __u16 hdisplay;