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 DCDC8F513F0 for ; Sun, 8 Mar 2026 13:25:16 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9562E10E179; Sun, 8 Mar 2026 13:25:16 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="H1QAW7Dn"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.14]) by gabe.freedesktop.org (Postfix) with ESMTPS id 030EF10E175; Sun, 8 Mar 2026 13:25:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1772976314; x=1804512314; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=p+O2dYYLBD4tD8j4Y6YNsBRPaO1EsoXdHdMkrFX4z6c=; b=H1QAW7DnKOXRkXSgIpo/H0bksbrFrHMVtRQDztOe+ayskNR7OGH+rXKm ebpulwrGV1/jtt/ehim2Or1TsnYYMwebww+Wldf2qvPfD2RRSOjTneT9T 5JAxi6zn2tTx+InnUjRgvRd442GamWtSijwfW3dab7lHk1Z+nI0JcPSvi BViwJ9U+P7Qj/yWJv5Yz/YD9SdbAQN99TrOFKWlC1s7HZJFjWXNOIvnx1 GROrz47IgF2/+r/bhI+UcRJnMplWhtSR9PBRKMvHmmDR7Bwlxq6cql+1l lxRtyWdPSEsQSHqVNSMVDjNG/H1KlxX2yHj49Iw/UOf69ML0p0dmLzFbm A==; X-CSE-ConnectionGUID: zdF6yUSDTMmYvjNcWZh3xA== X-CSE-MsgGUID: hD6c2BNZSba3toiRiOSpEQ== X-IronPort-AV: E=McAfee;i="6800,10657,11722"; a="77871409" X-IronPort-AV: E=Sophos;i="6.23,108,1770624000"; d="scan'208";a="77871409" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by orvoesa106.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 08 Mar 2026 06:25:14 -0700 X-CSE-ConnectionGUID: Fp48SRCkTRaqvKibJXkkRw== X-CSE-MsgGUID: kady+aWrSBWElEH09DfkLA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,108,1770624000"; d="scan'208";a="217598188" Received: from administrator-system-product-name.igk.intel.com (HELO dev-417.igk.intel.com) ([10.91.214.181]) by fmviesa008.fm.intel.com with ESMTP; 08 Mar 2026 06:25:13 -0700 From: =?UTF-8?q?Micha=C5=82=20Grzelak?= To: intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org Cc: =?UTF-8?q?Micha=C5=82=20Grzelak?= Subject: [RFC v1 10/11] drm/i915/dg2: warn on V/P Override request on dg2 Date: Sun, 8 Mar 2026 14:24:45 +0100 Message-ID: <20260308132446.3320848-11-michal.grzelak@intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20260308132446.3320848-1-michal.grzelak@intel.com> References: <20260308132446.3320848-1-michal.grzelak@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Organization: Intel Technology Poland sp. z o.o. - ul. Slowackiego 173, 80-298 Gdansk - KRS 101882 - NIP 957-07-52-316 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" DG2 doesn't support vswing/preemphasis overriding. Issue a warning when requested to do so. Signed-off-by: Michał Grzelak --- drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c index 632a5fe08381..1b30c9888f95 100644 --- a/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c +++ b/drivers/gpu/drm/i915/display/intel_ddi_buf_trans.c @@ -1804,6 +1804,10 @@ dg2_get_snps_buf_trans(struct intel_encoder *encoder, const struct intel_crtc_state *crtc_state, int *n_entries) { + drm_WARN(to_intel_display(encoder)->drm, + intel_bios_encoder_overrides_vswing(encoder->devdata), + "Port %s asks to override vswing/preemph tables [DG2]\n", + port_name(intel_bios_encoder_port(encoder->devdata))); if (intel_crtc_has_dp_encoder(crtc_state) && intel_dp_is_uhbr(crtc_state)) return intel_get_buf_trans(&dg2_snps_trans_uhbr, n_entries); -- 2.45.2