From patchwork Wed Aug 18 18:10:37 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jani Nikula X-Patchwork-Id: 12444941 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=-16.8 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 CD087C4338F for ; Wed, 18 Aug 2021 18:11:23 +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 9C867610FE for ; Wed, 18 Aug 2021 18:11:23 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org 9C867610FE Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=intel.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.freedesktop.org Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EF5C66E895; Wed, 18 Aug 2021 18:11:22 +0000 (UTC) Received: from mga11.intel.com (mga11.intel.com [192.55.52.93]) by gabe.freedesktop.org (Postfix) with ESMTPS id BDA826E895; Wed, 18 Aug 2021 18:11:21 +0000 (UTC) X-IronPort-AV: E=McAfee;i="6200,9189,10080"; a="213269186" X-IronPort-AV: E=Sophos;i="5.84,332,1620716400"; d="scan'208";a="213269186" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by fmsmga102.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Aug 2021 11:11:21 -0700 X-IronPort-AV: E=Sophos;i="5.84,332,1620716400"; d="scan'208";a="449859373" Received: from jcarwana-mobl1.amr.corp.intel.com (HELO localhost) ([10.249.42.192]) by fmsmga007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 18 Aug 2021 11:11:15 -0700 From: Jani Nikula To: intel-gfx@lists.freedesktop.org Cc: jani.nikula@intel.com, manasi.d.navare@intel.com, ville.syrjala@linux.intel.com, dri-devel@lists.freedesktop.org Date: Wed, 18 Aug 2021 21:10:37 +0300 Message-Id: <08326b089b80e394989128f3f3dd362f1972caa8.1629310010.git.jani.nikula@intel.com> X-Mailer: git-send-email 2.20.1 In-Reply-To: References: MIME-Version: 1.0 Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo Subject: [Intel-gfx] [PATCH 02/17] drm/dp: use more of the extended receiver cap 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" Extend the use of extended receiver cap at 0x2200 to cover MAIN_LINK_CHANNEL_CODING_CAP in 0x2206, in case an implementation hides the DP 2.0 128b/132b channel encoding cap. Cc: dri-devel@lists.freedesktop.org Reviewed-by: Manasi Navare Signed-off-by: Jani Nikula --- drivers/gpu/drm/drm_dp_helper.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/gpu/drm/drm_dp_helper.c b/drivers/gpu/drm/drm_dp_helper.c index 9b2a2961fca8..9389f92cb944 100644 --- a/drivers/gpu/drm/drm_dp_helper.c +++ b/drivers/gpu/drm/drm_dp_helper.c @@ -608,7 +608,7 @@ static u8 drm_dp_downstream_port_count(const u8 dpcd[DP_RECEIVER_CAP_SIZE]) static int drm_dp_read_extended_dpcd_caps(struct drm_dp_aux *aux, u8 dpcd[DP_RECEIVER_CAP_SIZE]) { - u8 dpcd_ext[6]; + u8 dpcd_ext[DP_MAIN_LINK_CHANNEL_CODING + 1]; int ret; /*