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 95B9DFC9EC7 for ; Sun, 8 Mar 2026 13:25:09 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 2906110E14F; Sun, 8 Mar 2026 13:25:09 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="h8nQDpnX"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.14]) by gabe.freedesktop.org (Postfix) with ESMTPS id 1220B10E041; Sun, 8 Mar 2026 13:25:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1772976307; x=1804512307; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=SswZlG2Lf8BJCIEgpDfgcYBRf5yqg+FpJhKZf3yC8d8=; b=h8nQDpnXklBvbihnUadxJLWK+g/mqB/xURuRcG9h96ScqbkELQlQ3byZ 7Pyksd7GGbsLVYCDP7GZDXM7GEjRcaLsknZJLukoseMnt+i7BdEPP7sjz SsB7IEwKNU/mHqIJIwaQ03x9wgcLFSfXtdQxieBL/opQv2ZX5312ufMjn JQU12Dqg/C1MZysVBwG37Jr/3jIjbs+GBhM2jwJBrRb63nSriylxx+wiq gJBRW8tLNbCDxD4bWrkb6mVIivyE2nl4ryNEesRWkTJvMYAZyXyFIX3bN eZ6nj1v9yxohoJnwUIdmKihMkyW9RnSBdbmopXjffdfYR412EeRM/7Qbe w==; X-CSE-ConnectionGUID: WQ3mNddFT+WtFHIv/6dsww== X-CSE-MsgGUID: RBH2VkzzRUaqG7lrgMGZRw== X-IronPort-AV: E=McAfee;i="6800,10657,11722"; a="77871400" X-IronPort-AV: E=Sophos;i="6.23,108,1770624000"; d="scan'208";a="77871400" 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 06:25:07 -0700 X-CSE-ConnectionGUID: 0659qFNcTWyH5zERGOlpQQ== X-CSE-MsgGUID: VqYAsbUuSTSy5W27NoJNMw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.23,108,1770624000"; d="scan'208";a="217598108" 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 06:25:06 -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 04/11] drm/i915/bios: print V/P Override port info Date: Sun, 8 Mar 2026 14:24:39 +0100 Message-ID: <20260308132446.3320848-5-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" Check if port uses vswing/preemph override tables. Print info about port when requested. Signed-off-by: Michał Grzelak --- drivers/gpu/drm/i915/display/intel_bios.c | 11 +++++++++++ drivers/gpu/drm/i915/display/intel_bios.h | 1 + 2 files changed, 12 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index f88f330d21ae..6c618f17f772 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -2764,6 +2764,11 @@ static void print_ddi_port(const struct intel_bios_encoder_data *devdata) "Port %c supports dynamic DDI allocation in TCSS\n", port_name(port)); + if (intel_bios_encoder_overrides_vswing(devdata)) + drm_dbg_kms(display->drm, + "Port %c overrides VBT vswing/preemphasis tables\n", + port_name(port)); + hdmi_level_shift = intel_bios_hdmi_level_shift(devdata); if (hdmi_level_shift >= 0) { drm_dbg_kms(display->drm, @@ -3795,6 +3800,12 @@ bool intel_bios_encoder_supports_tbt(const struct intel_bios_encoder_data *devda return devdata->display->vbt.version >= 209 && devdata->child.tbt; } +bool intel_bios_encoder_overrides_vswing(const struct intel_bios_encoder_data *devdata) +{ + return devdata->display->vbt.version >= 218 && + devdata->child.use_vbt_vswing; +} + bool intel_bios_encoder_is_dedicated_external(const struct intel_bios_encoder_data *devdata) { return devdata->display->vbt.version >= 264 && diff --git a/drivers/gpu/drm/i915/display/intel_bios.h b/drivers/gpu/drm/i915/display/intel_bios.h index 75dff27b4228..50c8fc91fbe8 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.h +++ b/drivers/gpu/drm/i915/display/intel_bios.h @@ -73,6 +73,7 @@ bool intel_bios_get_dsc_params(struct intel_encoder *encoder, const struct intel_bios_encoder_data * intel_bios_encoder_data_lookup(struct intel_display *display, enum port port); +bool intel_bios_encoder_overrides_vswing(const struct intel_bios_encoder_data *devdata); bool intel_bios_encoder_supports_dvi(const struct intel_bios_encoder_data *devdata); bool intel_bios_encoder_supports_hdmi(const struct intel_bios_encoder_data *devdata); bool intel_bios_encoder_supports_dp(const struct intel_bios_encoder_data *devdata); -- 2.45.2