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 0A409C5B572 for ; Thu, 13 Aug 2026 16:10:18 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 893B510F407; Thu, 13 Aug 2026 16:10:17 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="l/3Ad9lN"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [192.198.163.9]) by gabe.freedesktop.org (Postfix) with ESMTPS id B253210F401; Thu, 13 Aug 2026 16:10:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1786637415; x=1818173415; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=9qJshARwRn/dyMFbzeUXHOZO3og/7wP1iMY8jmWIml0=; b=l/3Ad9lNjS5q35nAGGAyteM63skrbcZA8QfEoyypBxz/qMDJHVg+H3Nr TkW7NLV0xZexV5cTAFDRFyuR1jJ6ktNUr9NNhjiLS4w6LVxSG48XuxNt7 k8lkxtbZN7LmITGJ8s3vKfk4rT5Qjw02vTHqqjMD/yoCwlg/E7Hg/feeT QfVuwGvsXtIxtn8PvzLIxBtpiUf5YQ+8q/6UkAkYDm0kC+4c5tJ/gyTFg u6RunBSw3rxRnZZIHSgMomtHgTDr8hqV4YBaDbWpo9LWtFaUqzJ8cDXV4 3Pa77qe4ojjaYBsn6hQy/rL6hftLGLv5gvBZbpsCQFT26nm112i6AFvku A==; X-CSE-ConnectionGUID: i3si4c5rSfWHIBM69wSrYA== X-CSE-MsgGUID: v79VglLUT7KizzpfgmcRXA== X-IronPort-AV: E=McAfee;i="6800,10657,11874"; a="97882437" X-IronPort-AV: E=Sophos;i="6.25,221,1779174000"; d="scan'208";a="97882437" Received: from fmviesa010.fm.intel.com ([10.60.135.150]) by fmvoesa103.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 13 Aug 2026 09:10:15 -0700 X-CSE-ConnectionGUID: tZpT/ceYTZ2sxtP3EiChIA== X-CSE-MsgGUID: c+OdkPAUTTGwpByHDxHfoA== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.25,221,1779174000"; d="scan'208";a="260175385" Received: from dev-417.igk.intel.com ([10.91.214.181]) by fmviesa010.fm.intel.com with ESMTP; 13 Aug 2026 09:10:14 -0700 From: =?UTF-8?q?Micha=C5=82=20Grzelak?= To: intel-gfx@lists.freedesktop.org, intel-xe@lists.freedesktop.org Cc: Jani Nikula , Suraj Kandpal , =?UTF-8?q?Micha=C5=82=20Grzelak?= Subject: [PATCH v11 3/8] drm/i915/bios: print VS/PE-O port info Date: Thu, 13 Aug 2026 18:09:13 +0200 Message-ID: <20260813160918.918857-4-michal.grzelak@intel.com> X-Mailer: git-send-email 2.45.2 In-Reply-To: <20260813160918.918857-1-michal.grzelak@intel.com> References: <20260813160918.918857-1-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" Issue a debug message when port asks to override default Vswing / Preemphasis tables. Add helper intel_bios_encoder_requests_vspeo() to check if port requests for overriding default VS/PE tables. v6->v7 - expand VS/PE-O acronym in debug logging (Jani) v3->v4 - change debug message when requesting VS/PE-O (Suraj) Signed-off-by: Michał Grzelak Reviewed-by: Suraj Kandpal --- drivers/gpu/drm/i915/display/intel_bios.c | 10 ++++++++++ drivers/gpu/drm/i915/display/intel_bios.h | 1 + 2 files changed, 11 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_bios.c b/drivers/gpu/drm/i915/display/intel_bios.c index 06a8dd7581bb8..9610b794bc147 100644 --- a/drivers/gpu/drm/i915/display/intel_bios.c +++ b/drivers/gpu/drm/i915/display/intel_bios.c @@ -2801,6 +2801,11 @@ 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_requests_vspeo(devdata)) + drm_dbg_kms(display->drm, + "Port %c requests vswing/pre-emphasis override\n", + port_name(port)); + hdmi_level_shift = intel_bios_hdmi_level_shift(devdata); if (hdmi_level_shift >= 0) { drm_dbg_kms(display->drm, @@ -3829,6 +3834,11 @@ int intel_bios_hdmi_ddc_pin(const struct intel_bios_encoder_data *devdata) return map_ddc_pin(devdata->display, devdata->child.ddc_pin); } +bool intel_bios_encoder_requests_vspeo(const struct intel_bios_encoder_data *devdata) +{ + return devdata->display->vbt.version >= 218 && devdata->child.use_vbt_vswing; +} + bool intel_bios_encoder_supports_typec_usb(const struct intel_bios_encoder_data *devdata) { return devdata->display->vbt.version >= 195 && devdata->child.dp_usb_type_c; diff --git a/drivers/gpu/drm/i915/display/intel_bios.h b/drivers/gpu/drm/i915/display/intel_bios.h index 75dff27b42289..7a50a272cd27d 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_requests_vspeo(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