From patchwork Fri Feb 23 08:14:41 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Kandpal, Suraj" X-Patchwork-Id: 13568621 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 41C45C48BC4 for ; Fri, 23 Feb 2024 08:16:55 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 8064F10E089; Fri, 23 Feb 2024 08:16:54 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="g8YJ3YNJ"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.17]) by gabe.freedesktop.org (Postfix) with ESMTPS id 2385410E089 for ; Fri, 23 Feb 2024 08:16:52 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1708676213; x=1740212213; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=UavXwdJmwudySItglSYoYO4uA5boXOAsJFZZ/A7/xf4=; b=g8YJ3YNJtgnO7TTGwdt9q+FW+XARYPopP306k3iBZBysPP5oRRzGWlx8 Gk8umT8NPyK5HjQjUygNtOt8ubm6xM+uX2TyewNelLF9m45NbQ7y98Bto F171aFOcllpAZoqzNOQuJ6YPDxi+jw7JB0d96kQ+HRezTwKpbbbSzaVcM oKzQv6UQs2Rvg86udhTliPiK//2x7LdGXfAiil+1/uaTV/Re0BXNsEcXH TRuYcYB9lujLkeFrnXejDs7+Az+F0B8q7TtKj7KVPzv6d9xSs/UbcZstc 65CloM5lnWabar3rvj7rF6lZjnZg5Qamgh+zACBVKrYCSRDT+Einwzo/s g==; X-IronPort-AV: E=McAfee;i="6600,9927,10992"; a="2830005" X-IronPort-AV: E=Sophos;i="6.06,179,1705392000"; d="scan'208";a="2830005" Received: from orviesa003.jf.intel.com ([10.64.159.143]) by fmvoesa111.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Feb 2024 00:16:52 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.06,179,1705392000"; d="scan'208";a="10528779" Received: from kandpal-x299-ud4-pro.iind.intel.com ([10.190.239.32]) by orviesa003.jf.intel.com with ESMTP; 23 Feb 2024 00:16:50 -0800 From: Suraj Kandpal To: intel-gfx@lists.freedesktop.org Cc: uma.shankar@intel.com, ankit.k.nautiyal@intel.com, Suraj Kandpal Subject: [PATCH 00/13] HDCP MST Type1 fixes Date: Fri, 23 Feb 2024 13:44:41 +0530 Message-ID: <20240223081453.1576918-2-suraj.kandpal@intel.com> X-Mailer: git-send-email 2.43.2 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 (13): 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: Rename hdcp capable functions 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: Don't enable HDCP2.2 directly from check_link drm/i915/hdcp: Don't enable HDCP1.4 directly from check_link drm/i915/hdcp: Allocate stream id after HDCP AKE stage drm/i915/hdcp: Read Rxcaps for robustibility .../drm/i915/display/intel_display_debugfs.c | 21 +- .../drm/i915/display/intel_display_types.h | 12 +- drivers/gpu/drm/i915/display/intel_dp_hdcp.c | 137 +++++++---- drivers/gpu/drm/i915/display/intel_hdcp.c | 226 +++++++++--------- drivers/gpu/drm/i915/display/intel_hdcp.h | 7 +- drivers/gpu/drm/i915/display/intel_hdmi.c | 6 +- 6 files changed, 228 insertions(+), 181 deletions(-)