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 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 AEB8BEA4FC3 for ; Mon, 23 Feb 2026 14:00:24 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7027210E3F6; Mon, 23 Feb 2026 14:00:24 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="E2fcfItY"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.17]) by gabe.freedesktop.org (Postfix) with ESMTPS id 853A110E3F6; Mon, 23 Feb 2026 14:00:18 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1771855218; x=1803391218; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=fG6afppwNIStttpu3zZ1HvIhmenzRZBzLKAsDOHnNIY=; b=E2fcfItYwOYPRxpf7sCvQYU/RzHuhjkwklKrf7dv4lvm5rUNyxTwu6a1 ZhqTgXuMaSmLOhWu/vTpJgPBKkSGi9dz3YfYng03eTS/mFPq89j9H1Saw xCIjB2H6F18X/gZv6NFvMBFP/ZdKMjhGZEchYILJT5Yztjq0sNEv7qewb TErnulUs6bcP/2cKOxlxPIr/cbARVB2C24yMXGCgQgGODYk1/UM8VXjwA /JK/iae5gRR8758AlHCELC2l28+3vMjFYaR0qFz9jc62JwVDgIOGcIHA/ vB8f4RAzmThkWlINekVoVAF5umU8v8OOlegI3Iwxs/KfieXGt3iAVIIDE w==; X-CSE-ConnectionGUID: bE0bKXFDTe2WuRabCXObsg== X-CSE-MsgGUID: cykRnCHhS7ykZPFmGb0+2w== X-IronPort-AV: E=McAfee;i="6800,10657,11709"; a="72827051" X-IronPort-AV: E=Sophos;i="6.21,306,1763452800"; d="scan'208";a="72827051" Received: from fmviesa009.fm.intel.com ([10.60.135.149]) by orvoesa109.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Feb 2026 06:00:18 -0800 X-CSE-ConnectionGUID: FvpE1YaERvuqRnounB/YCw== X-CSE-MsgGUID: wEgSxFqiTreNGPLFuzT/0Q== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.21,306,1763452800"; d="scan'208";a="212961201" Received: from srr4-3-linux-103-aknautiy.iind.intel.com ([10.223.34.160]) by fmviesa009-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 23 Feb 2026 06:00:16 -0800 From: Ankit Nautiyal To: intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org Cc: ville.syrjala@linux.intel.com, jouni.hogander@intel.com, animesh.manna@intel.com, Ankit Nautiyal Subject: [PATCH 08/14] drm/i915/dp: Add AS SDP support for PR with link ON Date: Mon, 23 Feb 2026 19:14:25 +0530 Message-ID: <20260223134431.1639308-9-ankit.k.nautiyal@intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20260223134431.1639308-1-ankit.k.nautiyal@intel.com> References: <20260223134431.1639308-1-ankit.k.nautiyal@intel.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-BeenThere: intel-xe@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Intel Xe graphics driver List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: intel-xe-bounces@lists.freedesktop.org Sender: "Intel-xe" Adaptive Sync SDP (AS SDP) is also used for Panel Replay (PR). For PR with Link ON, the AS SDP version V1 is used. When using AS SDP Version 1, AS SDP payload and parity bytes are all set to zeroes. Bspec: 75639 Signed-off-by: Ankit Nautiyal --- drivers/gpu/drm/i915/display/intel_dp.c | 17 ++++++++++++++++- 1 file changed, 16 insertions(+), 1 deletion(-) diff --git a/drivers/gpu/drm/i915/display/intel_dp.c b/drivers/gpu/drm/i915/display/intel_dp.c index d08db4938638..5952db6197cf 100644 --- a/drivers/gpu/drm/i915/display/intel_dp.c +++ b/drivers/gpu/drm/i915/display/intel_dp.c @@ -3115,7 +3115,8 @@ static bool intel_dp_needs_as_sdp(struct intel_dp *intel_dp, struct intel_crtc_state *crtc_state) { return crtc_state->vrr.enable || - crtc_state->cmrr.enable; + crtc_state->cmrr.enable || + crtc_state->has_panel_replay; } static void intel_dp_compute_as_sdp(struct intel_dp *intel_dp, @@ -3137,6 +3138,16 @@ static void intel_dp_compute_as_sdp(struct intel_dp *intel_dp, as_sdp->length = 0x9; as_sdp->duration_incr_ms = 0; as_sdp->version = 0x2; + + if (crtc_state->vrr.enable) + as_sdp->version = 0x2; + else + as_sdp->version = 0x1; + + /* No payload data bytes for Version 1 */ + if (as_sdp->version == 0x1) + return; + as_sdp->vtotal = intel_vrr_vmin_vtotal(crtc_state); if (crtc_state->cmrr.enable) { @@ -5005,6 +5016,10 @@ static ssize_t intel_dp_as_sdp_pack(const struct drm_dp_as_sdp *as_sdp, sdp->sdp_header.HB2 = as_sdp->version; sdp->sdp_header.HB3 = as_sdp->length; + /* No Payload Data bytes for Version 1 */ + if (as_sdp->version == 0x1) + return length; + /* Fill AS (Adaptive Sync) SDP Payload */ sdp->db[0] = as_sdp->mode; sdp->db[1] = as_sdp->vtotal & 0xFF; -- 2.45.2