From patchwork Wed Dec 16 05:31:06 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ankit Nautiyal X-Patchwork-Id: 11976629 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=-11.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE, 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 4C311C4361B for ; Wed, 16 Dec 2020 05:37:35 +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 DB34F23123 for ; Wed, 16 Dec 2020 05:37:34 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DB34F23123 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=intel-gfx-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 307D78985A; Wed, 16 Dec 2020 05:37:33 +0000 (UTC) Received: from mga04.intel.com (mga04.intel.com [192.55.52.120]) by gabe.freedesktop.org (Postfix) with ESMTPS id 727E98985A; Wed, 16 Dec 2020 05:37:32 +0000 (UTC) IronPort-SDR: aOnCjAcypHUj/EOdm7J7Pkg694bPhBDiFE774WFHuDdYWUnf3sLaOo9Ye0Oo+1c8G0xAz85NuE hn0XmZfnsdcw== X-IronPort-AV: E=McAfee;i="6000,8403,9836"; a="172437286" X-IronPort-AV: E=Sophos;i="5.78,423,1599548400"; d="scan'208";a="172437286" Received: from fmsmga006.fm.intel.com ([10.253.24.20]) by fmsmga104.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 15 Dec 2020 21:37:32 -0800 IronPort-SDR: 64Bg3jd1tY2b1rtmCh2cLo+np6Fnh690UuPPUSIx8JfQ6IlHBhYtEowRDj4BW/KHtNqMF4dt+P 2SR44UeBqbJg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.78,423,1599548400"; d="scan'208";a="556647027" Received: from linux-akn.iind.intel.com ([10.223.34.148]) by fmsmga006.fm.intel.com with ESMTP; 15 Dec 2020 21:37:29 -0800 From: Ankit Nautiyal To: intel-gfx@lists.freedesktop.org Date: Wed, 16 Dec 2020 11:01:06 +0530 Message-Id: <20201216053121.18819-1-ankit.k.nautiyal@intel.com> X-Mailer: git-send-email 2.17.1 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v5 00/15] Add support for DP-HDMI2.1 PCON 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: , Cc: airlied@linux.ie, dri-devel@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" This patch series attempts to add support for a DP-HDMI2.1 Protocol Convertor. The VESA spec for the HDMI2.1 PCON are proposed in Errata E5 to DisplayPort_v2.0: https://vesa.org/join-vesamemberships/member-downloads/?action=stamp&fileid=42299 The details are mentioned in: VESA DP-to-HDMI PCON Specification Standalone Document https://groups.vesa.org/wg/DP/document/15651 This series starts with adding support for FRL (Fixed Rate Link) Training between the PCON and HDMI2.1 sink. As per HDMI2.1 specification, a new data-channel or lane is added in FRL mode, by repurposing the TMDS clock Channel. Through FRL, higher bit-rate can be supported, ie. up to 12 Gbps/lane (48 Gbps over 4 lanes). With these patches, the HDMI2.1 PCON can be configured to achieve FRL training based on the maximum FRL rate supported by the panel, source and the PCON. The approach is to add the support for FRL training between PCON and HDMI2.1 sink and gradually add other blocks for supporting higher resolutions and other HDMI2.1 features, that can be supported by pcon for the sources that do not natively support HDMI2.1. This is done before the DP Link training between the source and PCON is started. In case of FRL training is not achieved, the PCON will work in the regular TMDS mode, without HDMI2.1 feature support. Any interruption in FRL training between the PCON and HDMI2.1 sink is notified through IRQ_HPD. On receiving the IRQ_HPD the concerned DPCD registers are read and FRL training is re-attempted. Currently, we have tested the FRL training and are able to enable 4K display with TGL Platform + Realtek PCON RTD2173 with HDMI2.1 supporting panel. v2: Addressed review comments and re-organized patches as suggested in comments on RFC patches. v3: Addressed review comments on previous version. v4: Added support for RGB->YCBCR conversion through PCON v5: Addressed review comments on previous version. Ankit Nautiyal (11): drm/edid: Parse DSC1.2 cap fields from HFVSDB block drm/dp_helper: Add Helpers for FRL Link Training support for DP-HDMI2.1 PCON drm/dp_helper: Add support for Configuring DSC for HDMI2.1 Pcon drm/dp_helper: Add helpers to configure PCONs RGB-YCbCr Conversion drm/i915: Capture max frl rate for PCON in dfp cap structure drm/i915: Add support for starting FRL training for HDMI2.1 via PCON drm/i915: Check for FRL training before DP Link training drm/i915: Read DSC capabilities of the HDMI2.1 PCON encoder drm/i915: Add helper functions for calculating DSC parameters for HDMI2.1 drm/i915/display: Configure PCON for DSC1.1 to DSC1.2 encoding drm/i915/display: Let PCON convert from RGB to YUV if it can Swati Sharma (4): drm/edid: Add additional HFVSDB fields for HDMI2.1 drm/edid: Parse MAX_FRL field from HFVSDB block drm/dp_helper: Add support for link failure detection drm/i915: Add support for enabling link status and recovery drivers/gpu/drm/drm_dp_helper.c | 566 ++++++++++++++++++ drivers/gpu/drm/drm_edid.c | 103 ++++ drivers/gpu/drm/i915/display/intel_ddi.c | 6 +- .../drm/i915/display/intel_display_types.h | 10 + drivers/gpu/drm/i915/display/intel_dp.c | 438 +++++++++++++- drivers/gpu/drm/i915/display/intel_dp.h | 7 +- drivers/gpu/drm/i915/display/intel_hdmi.c | 233 +++++++ drivers/gpu/drm/i915/display/intel_hdmi.h | 7 + include/drm/drm_connector.h | 49 ++ include/drm/drm_dp_helper.h | 218 +++++++ include/drm/drm_edid.h | 30 + 11 files changed, 1645 insertions(+), 22 deletions(-)