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 X-Spam-Level: X-Spam-Status: No, score=-5.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, MAILING_LIST_MULTI,SIGNED_OFF_BY,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 C05A3C67863 for ; Wed, 24 Oct 2018 03:35:46 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 8F20C206B5 for ; Wed, 24 Oct 2018 03:35:46 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 8F20C206B5 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-kernel-owner@vger.kernel.org Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726913AbeJXMB4 (ORCPT ); Wed, 24 Oct 2018 08:01:56 -0400 Received: from mga12.intel.com ([192.55.52.136]:49187 "EHLO mga12.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726268AbeJXMBz (ORCPT ); Wed, 24 Oct 2018 08:01:55 -0400 X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga001.jf.intel.com ([10.7.209.18]) by fmsmga106.fm.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 23 Oct 2018 19:22:22 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.54,418,1534834800"; d="scan'208";a="102098561" Received: from jhli-desk1.jf.intel.com ([10.7.198.167]) by orsmga001.jf.intel.com with ESMTP; 23 Oct 2018 19:22:22 -0700 From: Juston Li To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Cc: lyude@redhat.com, clinton.a.taylor@intel.com, nathan.d.ciobanu@intel.com, mario.limonciello@dell.com, jared_dominguez@dell.com, linux-kernel@vger.kernel.org, Juston Li Subject: [RESEND PATCH v2 0/2] Check MST topology change on resume Date: Tue, 23 Oct 2018 19:19:23 -0700 Message-Id: <20181024021925.27026-1-juston.li@intel.com> X-Mailer: git-send-email 2.17.2 Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Updated and resending these patches from Lyude: https://lkml.org/lkml/2016/5/19/361 https://lkml.org/lkml/2016/5/19/360 As Lyude explains in patch 1/2, we can't rely on MST hubs to handle hotplugs during suspend. This patchset will check if any EDID's changed upon resume and reset the MST connections if they did. This resolves issues with monitors not being detected when hotplugging them during suspend. Signed-off-by: Juston Li Changes since v1: - update functions that have been renamed since the original patch - add a null check for the cached EDID in case a new device was added - checkpatch fixes Lyude (2): drm/dp/mst: Reprobe EDID for MST ports on resume drm/i915/mst: Reset MST after resume when necessary drivers/gpu/drm/drm_dp_mst_topology.c | 94 ++++++++++++++++++++++++++- drivers/gpu/drm/i915/intel_dp.c | 7 +- 2 files changed, 99 insertions(+), 2 deletions(-) -- 2.17.2