From mboxrd@z Thu Jan 1 00:00:00 1970 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 BA5A8C433EF for ; Wed, 16 Mar 2022 08:12:17 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 4119410E73A; Wed, 16 Mar 2022 08:12:17 +0000 (UTC) Received: from mga14.intel.com (mga14.intel.com [192.55.52.115]) by gabe.freedesktop.org (Postfix) with ESMTPS id D032310E73A for ; Wed, 16 Mar 2022 08:12:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1647418335; x=1678954335; h=from:to:subject:in-reply-to:references:date:message-id: mime-version; bh=CoHUBR3UROwpa22nO0AB9QvxRAKjqXFiSLUsTbcbjd0=; b=QoZRvODdb8Kc/x60YlmhVkMKrCOd4+LD0R8lsdjDa/wpkuW4U5KEmnW/ 6p/DpWcejqkQfiUEfRaHU/4LUz5Dixq0UcRIBsSCltvv8B0MprzeiV4sK QCmsRLxMolHgOo7XSlcqbGeMmxjAa4JAWQ57BfRoNl1SPoO67ZwAWTS1F VYpdA5lwpXpAyLOP3eior1vGta/Re93jxVGmS5y8sEh+PMUqppYQcSiku HFCOWqQUTv0COVY3h2baVHm42XaI/Y40bcEHKFjydcWQBXdKL62DCt4tu 1Q64KHEbAvioptMSjoJ+to0X8xmrLf/uCb202obAjMDapP/r0xJ0Ay/Ak Q==; X-IronPort-AV: E=McAfee;i="6200,9189,10286"; a="256710383" X-IronPort-AV: E=Sophos;i="5.90,186,1643702400"; d="scan'208";a="256710383" Received: from orsmga007.jf.intel.com ([10.7.209.58]) by fmsmga103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Mar 2022 01:12:15 -0700 X-IronPort-AV: E=Sophos;i="5.90,186,1643702400"; d="scan'208";a="540808402" Received: from jgarrosx-mobl1.amr.corp.intel.com (HELO localhost) ([10.252.34.45]) by orsmga007-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 16 Mar 2022 01:12:13 -0700 From: Jani Nikula To: Vinod Govindapillai , intel-gfx@lists.freedesktop.org In-Reply-To: <20220314225837.42816-1-vinod.govindapillai@intel.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo References: <20220314225837.42816-1-vinod.govindapillai@intel.com> Date: Wed, 16 Mar 2022 10:12:10 +0200 Message-ID: <87y21anwo5.fsf@intel.com> MIME-Version: 1.0 Content-Type: text/plain Subject: Re: [Intel-gfx] [RFC PATCH 0/2] suppress the wrong long hotplug events X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" On Tue, 15 Mar 2022, Vinod Govindapillai wrote: > Monitors like LG 27UL650-W, 27UK850 goes into power sleep state > and generates long duration hotplug events even when the monitor > is connected for display. Here is a proposal to detect and > suppress such hotplug events by "sleep" for 2 secs for power > state monitor become available before enable atomic commit. I don't understand the failure mode. Please elaborate. Do we have a bug report? BR, Jani. > A debugfs entry is created to enable the suppression of the > hotplug event in such scenarios. > > Cc: Imre Deak > > Mohammed Khajapasha (2): > drm/i915/display: Add disable wait time for power state connector > drm/i915/display: Add sleep for power state connector > > .../gpu/drm/i915/display/intel_connector.c | 3 + > drivers/gpu/drm/i915/display/intel_display.c | 80 +++++++++++++++++++ > drivers/gpu/drm/i915/display/intel_display.h | 8 ++ > .../drm/i915/display/intel_display_debugfs.c | 58 ++++++++++++++ > .../drm/i915/display/intel_display_debugfs.h | 7 ++ > .../drm/i915/display/intel_display_types.h | 2 + > drivers/gpu/drm/i915/i915_drv.h | 2 + > 7 files changed, 160 insertions(+) -- Jani Nikula, Intel Open Source Graphics Center