From patchwork Sun Feb 4 14:24:54 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kandpal, Suraj" X-Patchwork-Id: 13544684 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 F2563C48292 for ; Sun, 4 Feb 2024 14:27:12 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8CE1A1121CE; Sun, 4 Feb 2024 14:27:06 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="Jao7ZIoF"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.8]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9EEE1112042 for ; Sun, 4 Feb 2024 14:27:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1707056824; x=1738592824; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=tN3xodVvmL92zEh7RUDPe1BRT9r8yov5kTG2MqxYq/A=; b=Jao7ZIoFKiOohicNkmyeh9kbUjIq2p46Pcwokb5Ry6vVxJdOIIMcwhxN 0m0pmCdbhDCROKwMwZVOqFzt6kDYGJ7ZFhnDW/tST8XUNv/4lAlYwpRox ho9Vyj72N0E0gyp87AN4ZPuj4LfMmsxjteYRzEGyFF2yyQxH6ZEp3NNMy beG+3xcySZK5Bv/XTHLerTgDD/CS0e4hfaxzfvxuJgFsPoyypa+Sgewfm QHLQ4vNPMbJ0ewEqW3oAOn/QNC+XQZM1jL3ARF0dBWeqwSJyw4MKSv/Hn viyeB/u/lzB6Y2e6i13kBeWFr4UXszhmxr40luxXBWaPfWZs2kuWZUU6m g==; X-IronPort-AV: E=McAfee;i="6600,9927,10973"; a="17920756" X-IronPort-AV: E=Sophos;i="6.05,242,1701158400"; d="scan'208";a="17920756" Received: from fmviesa001.fm.intel.com ([10.60.135.141]) by fmvoesa102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Feb 2024 06:27:04 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.05,242,1701158400"; d="scan'208";a="31605252" Received: from kandpal-x299-ud4-pro.iind.intel.com ([10.190.239.32]) by fmviesa001.fm.intel.com with ESMTP; 04 Feb 2024 06:27:02 -0800 From: Suraj Kandpal To: intel-gfx@lists.freedesktop.org Cc: uma.shankar@intel.com, ankit.k.nautiyal@intel.com, Suraj Kandpal Subject: [PATCH 00/11] HDCP Type1 MST fixes Date: Sun, 4 Feb 2024 19:54:54 +0530 Message-Id: <20240204142505.1157146-1-suraj.kandpal@intel.com> X-Mailer: git-send-email 2.25.1 MIME-Version: 1.0 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" We were seeing a blank screen whenever Type1 content was played. This was due to extra timing which was taken as we had moved to remote read and writes previously for MST scenario, which in turn was done as we were not able to do direct read and writes to the immediate downstream device. The correct flow should be that we talk only to the immediate downstream device and the rest needs to be taken care by that device. With this patch series we move back to direct reads and writes, fix the fastset setting because of which direct reads and writes to HDCP related DPCD register stopped working, derive hdcp structure correctly and increase robustability if rxcaps HDCP capability reporting. Signed-off-by: Suraj Kandpal Suraj Kandpal (11): drm/i915/hdcp: Move to direct reads for HDCP drm/i915/hdcp: Move source hdcp2 checks into its own function drm/i915/hdcp: Refactor intel_dp_hdcp2_capable drm/i915/hdcp: Pass drm_dp_aux to read_bcaps function drm/i915/hdcp: Add new remote capability check shim function drm/i915/hdcp: HDCP Capability for the downstream device drm/i915/hdcp: Remove additional timing for reading mst hdcp message drm/i915/hdcp: Extract hdcp structure from correct connector drm/i915/hdcp: Save acquire_ctx in intel_hdcp drm/i915/hdcp: Allocate stream id after HDCP AKE stage drm/i915/hdcp: Read Rxcaps for robustibility .../drm/i915/display/intel_display_debugfs.c | 24 ++- .../drm/i915/display/intel_display_types.h | 5 + drivers/gpu/drm/i915/display/intel_dp_hdcp.c | 122 ++++++++----- drivers/gpu/drm/i915/display/intel_hdcp.c | 160 ++++++++++-------- drivers/gpu/drm/i915/display/intel_hdcp.h | 3 + 5 files changed, 195 insertions(+), 119 deletions(-)