From patchwork Mon Nov 7 07:20:44 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Nautiyal, Ankit K" X-Patchwork-Id: 13033897 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 E3606C4332F for ; Mon, 7 Nov 2022 07:21:18 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7CAE110E225; Mon, 7 Nov 2022 07:20:56 +0000 (UTC) Received: from mga06.intel.com (mga06b.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id 94FA810E1F8; Mon, 7 Nov 2022 07:20:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1667805644; x=1699341644; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=vPnhh/Ffc+ggmRg7PtIuQIgfEuTRHFt2mR0Gj7QjOwY=; b=cqqpiubiqD6MI81OihzAyj8ceEXsrzA2rk99YB8yqLUgbLmlSFS+0G3M bcyFwFoNDjq/XtwCGBXZXRlq8LkK1iQwH0fyxurM0nbpkJ/nGNB7yvNal Hou8r2MfiQ5nNvCNxZuMHnnQ480l015h6ucZD0QxMQQLLIk92+aSTMx6C jN2Ao+2ogkjLw58cLuBQr5MfVPBAfjISHHTaTmgWfas5SCzhhuUy76Ckz OPdXxTuG8TtGJvtWz+BeJbEbBeSipmRRBaZV259q13NExxLt/DvQ3TTHJ N3le+T/WRSywia40YRlduD9m49ZrOCg5osY3LRf7CSiM/TjhxIMxn3wmf A==; X-IronPort-AV: E=McAfee;i="6500,9779,10523"; a="372463407" X-IronPort-AV: E=Sophos;i="5.96,143,1665471600"; d="scan'208";a="372463407" Received: from fmsmga004.fm.intel.com ([10.253.24.48]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Nov 2022 23:20:43 -0800 X-IronPort-AV: E=McAfee;i="6500,9779,10523"; a="704767304" X-IronPort-AV: E=Sophos;i="5.96,143,1665471600"; d="scan'208";a="704767304" Received: from srr4-3-linux-103-aknautiy.iind.intel.com ([10.223.34.160]) by fmsmga004-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 Nov 2022 23:20:41 -0800 From: Ankit Nautiyal To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [RFC 14/15] drm/i915/hdmi21/mtl: Add support for sending uevent to user for FRL training failure Date: Mon, 7 Nov 2022 12:50:44 +0530 Message-Id: <20221107072045.628895-15-ankit.k.nautiyal@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20221107072045.628895-1-ankit.k.nautiyal@intel.com> References: <20221107072045.628895-1-ankit.k.nautiyal@intel.com> 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: vandita.kulkarni@intel.com, uma.shankar@intel.com, mika.kahola@intel.com, radhakrishna.sripada@intel.com Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" In case of HDMI2.1 FRL training failure for a given mode, the user should be sent a uevent signalling Link failure. This patch adds support for sending uevent to userspace in case of link training failure. Signed-off-by: Ankit Nautiyal --- drivers/gpu/drm/i915/display/intel_hdmi.c | 30 +++++++++++++++++++++++ 1 file changed, 30 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_hdmi.c b/drivers/gpu/drm/i915/display/intel_hdmi.c index 1eadf77dc819..9e8ee6d5bc5d 100644 --- a/drivers/gpu/drm/i915/display/intel_hdmi.c +++ b/drivers/gpu/drm/i915/display/intel_hdmi.c @@ -2944,6 +2944,31 @@ void intel_infoframe_init(struct intel_digital_port *dig_port) } } +/* Common code with DP, need to put in a common place */ +static void intel_hdmi_modeset_retry_work_fn(struct work_struct *work) +{ + struct intel_connector *intel_connector; + struct drm_connector *connector; + + intel_connector = container_of(work, typeof(*intel_connector), + modeset_retry_work); + connector = &intel_connector->base; + DRM_DEBUG_KMS("[CONNECTOR:%d:%s]\n", connector->base.id, + connector->name); + + /* Grab the locks before changing connector property*/ + mutex_lock(&connector->dev->mode_config.mutex); + /* + * Set connector link status to BAD and send a Uevent to notify + * userspace to do a modeset. + */ + drm_connector_set_link_status_property(connector, + DRM_MODE_LINK_STATUS_BAD); + mutex_unlock(&connector->dev->mode_config.mutex); + /* Send Hotplug uevent so userspace can reprobe */ + drm_kms_helper_hotplug_event(connector->dev); +} + void intel_hdmi_init_connector(struct intel_digital_port *dig_port, struct intel_connector *intel_connector) { @@ -3021,6 +3046,11 @@ void intel_hdmi_init_connector(struct intel_digital_port *dig_port, &conn_info); if (!intel_hdmi->cec_notifier) drm_dbg_kms(&dev_priv->drm, "CEC notifier get failed\n"); + + /* Initialize the work for modeset in case of link train failure */ + if (DISPLAY_VER(dev_priv) >= 14) + INIT_WORK(&intel_connector->modeset_retry_work, + intel_hdmi_modeset_retry_work_fn); } /*