From patchwork Mon Oct 30 15:58:20 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Imre Deak X-Patchwork-Id: 13440713 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 87F40C4167B for ; Mon, 30 Oct 2023 15:58:46 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id F024110E319; Mon, 30 Oct 2023 15:58:35 +0000 (UTC) Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.10]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1674F10E30A; Mon, 30 Oct 2023 15:58:27 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1698681507; x=1730217507; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=inJkwVNIHOK+vvG2ke0cZB5M6irQFWNWMEnOaXoUg8Q=; b=kju9FkSKsgxg0ih3cvxCHn4l/l1D4EVom84g66ryx2TuZ6IzWkGMUiYx bkRN3As5nz58sxKUTdfe8vLWGAg176c2Zq2x2wHMfxbsxgP3p9cY3mkyv 1DLKQjBv5nJVd22iL3bGFuhOHBGA+DRMiX6mNQApC5wbeSAsiVYT3a/6I 11IA5ISw4hZSPMIGHmYj6EH1NPKI1RcTR5vHcQMzpeNPT8yBw7N3DFRCd pBQyFaBiKnMiXdFGSlBTL6FmFacA9CYYPAvmqa7Ucm+St0h8hH5c7OwEy I+oKCejJIKFhiWuZLwetJpu8Mx6diLscoAaaKeS7lw1vhLZBkDJAnKUIa A==; X-IronPort-AV: E=McAfee;i="6600,9927,10879"; a="974411" X-IronPort-AV: E=Sophos;i="6.03,263,1694761200"; d="scan'208";a="974411" Received: from orsmga008.jf.intel.com ([10.7.209.65]) by orvoesa102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Oct 2023 08:58:27 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=McAfee;i="6600,9927,10879"; a="789493960" X-IronPort-AV: E=Sophos;i="6.03,263,1694761200"; d="scan'208";a="789493960" Received: from ideak-desk.fi.intel.com ([10.237.72.78]) by orsmga008-auth.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 30 Oct 2023 08:58:24 -0700 From: Imre Deak To: intel-gfx@lists.freedesktop.org Date: Mon, 30 Oct 2023 17:58:20 +0200 Message-Id: <20231030155843.2251023-8-imre.deak@intel.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20231030155843.2251023-1-imre.deak@intel.com> References: <20231030155843.2251023-1-imre.deak@intel.com> MIME-Version: 1.0 Subject: [Intel-gfx] [PATCH v4 07/30] drm/dp: Add DP_HBLANK_EXPANSION_CAPABLE and DSC_PASSTHROUGH_EN DPCD flags 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: dri-devel@lists.freedesktop.org Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" Add the DPCD flag to enable DSC passthrough in a last branch device, used in a follow-up i915 patch. Also add a flag to detect HBLANK expansion support in a branch device, used by a workaround in a follow-up i915 patch. Cc: Lyude Paul Cc: dri-devel@lists.freedesktop.org Reviewed-by: Stanislav Lisovskiy Signed-off-by: Imre Deak Reviewed-by: Lyude Paul --- include/drm/display/drm_dp.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/drm/display/drm_dp.h b/include/drm/display/drm_dp.h index e69cece404b3c..763d45a612f35 100644 --- a/include/drm/display/drm_dp.h +++ b/include/drm/display/drm_dp.h @@ -148,6 +148,7 @@ #define DP_RECEIVE_PORT_0_CAP_0 0x008 # define DP_LOCAL_EDID_PRESENT (1 << 1) # define DP_ASSOCIATED_TO_PRECEDING_PORT (1 << 2) +# define DP_HBLANK_EXPANSION_CAPABLE (1 << 3) #define DP_RECEIVE_PORT_0_BUFFER_SIZE 0x009 @@ -699,6 +700,7 @@ #define DP_DSC_ENABLE 0x160 /* DP 1.4 */ # define DP_DECOMPRESSION_EN (1 << 0) +# define DP_DSC_PASSTHROUGH_EN (1 << 1) #define DP_DSC_CONFIGURATION 0x161 /* DP 2.0 */ #define DP_PSR_EN_CFG 0x170 /* XXX 1.2? */