From mboxrd@z Thu Jan 1 00:00:00 1970 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=-16.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,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 06D20C433DB for ; Wed, 27 Jan 2021 06:51:00 +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 A596120724 for ; Wed, 27 Jan 2021 06:50:59 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A596120724 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 C1D5E6E578; Wed, 27 Jan 2021 06:50:58 +0000 (UTC) Received: from mga06.intel.com (mga06.intel.com [134.134.136.31]) by gabe.freedesktop.org (Postfix) with ESMTPS id 42D946E578 for ; Wed, 27 Jan 2021 06:50:57 +0000 (UTC) IronPort-SDR: GQyEc+3PTLdd/xnDou/K5na26KGQhhpSHSLXgmBlo+CqdgklNZ7Bkr6KsSokvjaRT73StZmuJt AynBuKH67XBA== X-IronPort-AV: E=McAfee;i="6000,8403,9876"; a="241555730" X-IronPort-AV: E=Sophos;i="5.79,378,1602572400"; d="scan'208";a="241555730" Received: from orsmga005.jf.intel.com ([10.7.209.41]) by orsmga104.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 26 Jan 2021 22:50:56 -0800 IronPort-SDR: IHIfejJTaiICoFR5CA9psfkeXeyeQNHXpw5I8A8aaQrGvWyi4B1xTPUV/nWqP4UmkKgEmfnnTW k++YfBBiXSvg== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.79,378,1602572400"; d="scan'208";a="573175074" Received: from jhli-desk1.jf.intel.com ([10.54.74.156]) by orsmga005.jf.intel.com with ESMTP; 26 Jan 2021 22:50:55 -0800 From: Juston Li To: intel-gfx@lists.freedesktop.org Date: Tue, 26 Jan 2021 22:50:31 -0800 Message-Id: <20210127065034.2501119-1-juston.li@intel.com> X-Mailer: git-send-email 2.29.2 MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v2 1/4] drm/i915/hdcp: Disable the QSES check for HDCP 1.4 over MST 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: Daniel Vetter , seanpaul@chromium.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Sean Paul The HDCP 1.4 spec does not require the QUERY_STREAM_ENCRYPTION_STATUS check, it was always a nice-to-have. After deploying this across various devices, we've determined that some MST bridge chips do not properly support this call for HDCP 1.4 (namely Synaptics and Realtek). I had considered creating a quirk for this, but I think it's more prudent to just disable the check entirely since I don't have an idea how widespread support is. Acked-by: Daniel Vetter Reviewed-by: Anshuman Gupta Signed-off-by: Sean Paul Link: https://patchwork.freedesktop.org/patch/msgid/20210106223909.34476-1-sean@poorly.run #v1 Changes in v2: -Rebased on -tip --- drivers/gpu/drm/i915/display/intel_dp_hdcp.c | 12 +----------- 1 file changed, 1 insertion(+), 11 deletions(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c index f372e25edab4..4dba5bb15af5 100644 --- a/drivers/gpu/drm/i915/display/intel_dp_hdcp.c +++ b/drivers/gpu/drm/i915/display/intel_dp_hdcp.c @@ -722,16 +722,6 @@ static bool intel_dp_mst_get_qses_status(struct intel_digital_port *dig_port, return reply.auth_completed && reply.encryption_enabled; } -static -bool intel_dp_mst_hdcp_check_link(struct intel_digital_port *dig_port, - struct intel_connector *connector) -{ - if (!intel_dp_hdcp_check_link(dig_port, connector)) - return false; - - return intel_dp_mst_get_qses_status(dig_port, connector); -} - static int intel_dp_mst_hdcp2_stream_encryption(struct intel_connector *connector, bool enable) @@ -805,7 +795,7 @@ static const struct intel_hdcp_shim intel_dp_mst_hdcp_shim = { .read_v_prime_part = intel_dp_hdcp_read_v_prime_part, .toggle_signalling = intel_dp_hdcp_toggle_signalling, .stream_encryption = intel_dp_mst_hdcp_stream_encryption, - .check_link = intel_dp_mst_hdcp_check_link, + .check_link = intel_dp_hdcp_check_link, .hdcp_capable = intel_dp_hdcp_capable, .write_2_2_msg = intel_dp_hdcp2_write_msg, .read_2_2_msg = intel_dp_hdcp2_read_msg, -- 2.29.2 _______________________________________________ Intel-gfx mailing list Intel-gfx@lists.freedesktop.org https://lists.freedesktop.org/mailman/listinfo/intel-gfx