From patchwork Mon Oct 19 07:12:59 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Gupta, Anshuman" X-Patchwork-Id: 11843683 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=-12.7 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=unavailable 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 07D9DC43457 for ; Mon, 19 Oct 2020 07:23:38 +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 A674B22276 for ; Mon, 19 Oct 2020 07:23:37 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A674B22276 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=dri-devel-bounces@lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D32476E8EB; Mon, 19 Oct 2020 07:23:36 +0000 (UTC) Received: from mga17.intel.com (mga17.intel.com [192.55.52.151]) by gabe.freedesktop.org (Postfix) with ESMTPS id E154A6E8E2; Mon, 19 Oct 2020 07:23:34 +0000 (UTC) IronPort-SDR: e+CLbM9wHDjsfKQHkPVixNoWgIg/B2An6NnIPqZsCWU3WRAjZlxFeGrzfSL3SX1EUyH81xMKnu Hgww0gB4E6PQ== X-IronPort-AV: E=McAfee;i="6000,8403,9778"; a="146841709" X-IronPort-AV: E=Sophos;i="5.77,393,1596524400"; d="scan'208";a="146841709" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Oct 2020 00:23:34 -0700 IronPort-SDR: Axi42uHUYYOSKb6aCDkw+HAfZZw6E4wArEb1IRJFcXi7qVOt4xGMEM43KuxMXTk2lw8lvxNtjW Cx0uYV18qIXQ== X-IronPort-AV: E=Sophos;i="5.77,393,1596524400"; d="scan'208";a="465429219" Received: from genxfsim-desktop.iind.intel.com ([10.223.74.178]) by orsmga004-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Oct 2020 00:23:32 -0700 From: Anshuman Gupta To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org Subject: [RFC] drm/hdcp: Max MST content streams Date: Mon, 19 Oct 2020 12:42:59 +0530 Message-Id: <20201019071259.24566-1-anshuman.gupta@intel.com> X-Mailer: git-send-email 2.26.2 MIME-Version: 1.0 X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Anshuman Gupta , Sean Paul Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" Let's define Maximum MST content streams up to four generically which can be supported by modern display controllers. Cc: Sean Paul Cc: Ramalingam C Signed-off-by: Anshuman Gupta Acked-by: Maarten Lankhorst --- include/drm/drm_hdcp.h | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/include/drm/drm_hdcp.h b/include/drm/drm_hdcp.h index fe58dbb46962..ac22c246542a 100644 --- a/include/drm/drm_hdcp.h +++ b/include/drm/drm_hdcp.h @@ -101,11 +101,11 @@ /* Following Macros take a byte at a time for bit(s) masking */ /* - * TODO: This has to be changed for DP MST, as multiple stream on - * same port is possible. - * For HDCP2.2 on HDMI and DP SST this value is always 1. + * TODO: HDCP_2_2_MAX_CONTENT_STREAMS_CNT is based upon actual + * H/W MST streams capacity. + * This required to be moved out to platform specific header. */ -#define HDCP_2_2_MAX_CONTENT_STREAMS_CNT 1 +#define HDCP_2_2_MAX_CONTENT_STREAMS_CNT 4 #define HDCP_2_2_TXCAP_MASK_LEN 2 #define HDCP_2_2_RXCAPS_LEN 3 #define HDCP_2_2_RX_REPEATER(x) ((x) & BIT(0))