From patchwork Tue Sep 22 12:50:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Imre Deak X-Patchwork-Id: 11792467 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id DA4D3112C for ; Tue, 22 Sep 2020 12:51:23 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id B338D2396D for ; Tue, 22 Sep 2020 12:51:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org B338D2396D Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 82D256E127; Tue, 22 Sep 2020 12:51:19 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by gabe.freedesktop.org (Postfix) with ESMTPS id 971136E073; Tue, 22 Sep 2020 12:51:17 +0000 (UTC) IronPort-SDR: bA/ZEaIEg9UBQkaQOjGSiT7PijXs2G6iPF59HGAJLpETVutbpIvPysCeicKlL3dqvN1P574Z2r w6xEi5aTWKWg== X-IronPort-AV: E=McAfee;i="6000,8403,9751"; a="224740746" X-IronPort-AV: E=Sophos;i="5.77,290,1596524400"; d="scan'208";a="224740746" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga003.jf.intel.com ([10.7.209.27]) by orsmga105.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Sep 2020 05:51:16 -0700 IronPort-SDR: OnC8aB6IQahwqkcjmYpXi7Ev6DmoiMJ5zTIkRzebLRNyFcmddFoMOA0edDYnyHfnsZCI3bkjxQ YYBNQBfwUbGw== X-IronPort-AV: E=Sophos;i="5.77,290,1596524400"; d="scan'208";a="304931260" Received: from ideak-desk.fi.intel.com (HELO localhost) ([10.237.68.141]) by orsmga003-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 22 Sep 2020 05:51:15 -0700 From: Imre Deak To: intel-gfx@lists.freedesktop.org Subject: [PATCH 0/7] drm/i915: Add support for LTTPR non-transparent link training mode Date: Tue, 22 Sep 2020 15:50:59 +0300 Message-Id: <20200922125106.30540-1-imre.deak@intel.com> X-Mailer: git-send-email 2.17.1 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: dri-devel@lists.freedesktop.org MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Add the drm-core helpers and register definitions required to detect LTTPRs and perform the link training in non-transparent mode. In i915 switch to non-transparent link training mode if any LTTPR is detected. Cc: dri-devel@lists.freedesktop.org Imre Deak (7): drm/i915: Fix DP link training pattern mask drm/i915: Move intel_dp_get_link_status to intel_dp_link_training.c drm/i915: Simplify the link training functions drm/i915: Factor out a helper to disable the DPCD training pattern drm/dp: Add LTTPR helpers drm/i915: Switch to LTTPR transparent mode link training drm/i915: Switch to LTTPR non-transparent mode link training drivers/gpu/drm/drm_dp_helper.c | 179 ++++++- drivers/gpu/drm/i915/display/intel_ddi.c | 3 +- .../drm/i915/display/intel_display_types.h | 2 + drivers/gpu/drm/i915/display/intel_dp.c | 38 +- drivers/gpu/drm/i915/display/intel_dp.h | 2 - .../drm/i915/display/intel_dp_link_training.c | 492 +++++++++++++++--- .../drm/i915/display/intel_dp_link_training.h | 10 +- include/drm/drm_dp_helper.h | 56 ++ 8 files changed, 682 insertions(+), 100 deletions(-)