From patchwork Sun Feb 4 07:39:25 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kandpal, Suraj" X-Patchwork-Id: 13544535 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 71476C48286 for ; Sun, 4 Feb 2024 07:48:53 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 205411120F4; Sun, 4 Feb 2024 07:48:51 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="DaSMetRY"; dkim-atps=neutral X-Greylist: delayed 426 seconds by postgrey-1.36 at gabe; Sun, 04 Feb 2024 07:48:45 UTC Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.20]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1A5AF1120F5 for ; Sun, 4 Feb 2024 07:48:45 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1707032926; x=1738568926; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=Hv3WOwOaiHpzbTHRm3TPvj0ct9kNL742XQHQtRGQfIs=; b=DaSMetRYoV540CklxsC31988Hacuv7gHqTDoBpjpkYMdruLxOqrCzlyU zY/HLeYWNL2pSDJW68vzuQb0UIaMiKf3erg2lL1it3TrQf8dBPgzYJh15 bd/QUgd/R1WfwuAZU7q3pV4wsppeLAkOnAxdAxriRL3i0IfpWYijsiwtb l14LA3n0XGP0SznRC7fEBZPkc2CLGiz4qL6PIzUK/fKhgvVt1J5pzODwY Ej8haDJ8FKg1hQn74/eEM6xxmZLaIdoLBJMY16eNAHNahue0dKmhuE00Z PQQruPwMNSgfy2P0FgPdKdzErNrE75lpAszBB5fk1hAfYkAIvYpFODK+C w==; X-IronPort-AV: E=McAfee;i="6600,9927,10973"; a="279223" X-IronPort-AV: E=Sophos;i="6.05,242,1701158400"; d="scan'208";a="279223" Received: from fmviesa004.fm.intel.com ([10.60.135.144]) by orvoesa112.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 Feb 2024 23:41:38 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.05,242,1701158400"; d="scan'208";a="5067652" Received: from kandpal-x299-ud4-pro.iind.intel.com ([10.190.239.32]) by fmviesa004.fm.intel.com with ESMTP; 03 Feb 2024 23:41:36 -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 13:09:25 +0530 Message-Id: <20240204073936.1135848-1-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 | 119 ++++++++----- drivers/gpu/drm/i915/display/intel_hdcp.c | 160 ++++++++++-------- drivers/gpu/drm/i915/display/intel_hdcp.h | 3 + 5 files changed, 192 insertions(+), 119 deletions(-)