From patchwork Fri May 3 12:24:24 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Ville Syrjala X-Patchwork-Id: 13652698 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 7FE8DC25B5C for ; Fri, 3 May 2024 12:25:22 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id EE1831128C5; Fri, 3 May 2024 12:25:21 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="QOgsEfHK"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.20]) by gabe.freedesktop.org (Postfix) with ESMTPS id 9A07D1128C5 for ; Fri, 3 May 2024 12:25:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1714739120; x=1746275120; h=from:to:subject:date:message-id:in-reply-to:references: mime-version:content-transfer-encoding; bh=F5D0ZV8+YunYQH5OEUA9rwivEbyL2cX3U51aurzz20U=; b=QOgsEfHKZDj9blqyZnh3FdcoWOl/0Nxouuxf8NHNVzX1KA2fiS/Y5dok x4tWiwDASa9F6ZjKkFNsER/8rJPzds7ThENusU1tVfrcWZYrd+OoApxAJ /n1iSUsJ/pXcHshlD7Qj818DUYAkMl4azEtwidm/IpsTBz5P89QsoXEVZ MBmGEg/atpQXmagaWxoXGk7TUGE2aPOucXhWb1WC0piv66tTAyh6IbT0Y Turr3WKNVhJERvhw6IiAiQMLqFgATAhDtAnygRYk+mu0tVNtK/sNt8ZIw RnSEAiVzu1DFYzIx4y0mxIJ0X8RNSAS4/Hfgk5tyNF17lMod7AcUadtCr Q==; X-CSE-ConnectionGUID: 9b0rMmY2Q0mJdN5V228oJg== X-CSE-MsgGUID: dklcA4jOQSmscCYZEEMTRg== X-IronPort-AV: E=McAfee;i="6600,9927,11062"; a="10372749" X-IronPort-AV: E=Sophos;i="6.07,251,1708416000"; d="scan'208";a="10372749" Received: from fmviesa008.fm.intel.com ([10.60.135.148]) by orvoesa112.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 03 May 2024 05:25:20 -0700 X-CSE-ConnectionGUID: qqhWXlLpQjekf9N6RpwOmw== X-CSE-MsgGUID: 0mN7DtzCQtW9dY7Mxc9anw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,251,1708416000"; d="scan'208";a="27463701" Received: from stinkpipe.fi.intel.com (HELO stinkbox) ([10.237.72.74]) by fmviesa008.fm.intel.com with SMTP; 03 May 2024 05:25:18 -0700 Received: by stinkbox (sSMTP sendmail emulation); Fri, 03 May 2024 15:25:17 +0300 From: Ville Syrjala To: intel-gfx@lists.freedesktop.org Subject: [PATCH 10/35] drm/i915/bios: Define VBT block 4 (Mode Support List) contents Date: Fri, 3 May 2024 15:24:24 +0300 Message-ID: <20240503122449.27266-11-ville.syrjala@linux.intel.com> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240503122449.27266-1-ville.syrjala@linux.intel.com> References: <20240503122449.27266-1-ville.syrjala@linux.intel.com> MIME-Version: 1.0 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: , Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" From: Ville Syrjälä Define the contents of VBT block 4 (Mode Support List). Slightly crazy layout with a variable length list at the start, followed by the length of said list. No real idea what these "Intel mode numbers" really are. What I see in real world VBTs seems to be always the same list of 26 numbers, ranging between 0x30 and 0x84. Signed-off-by: Ville Syrjälä Reviewed-by: Jani Nikula --- drivers/gpu/drm/i915/display/intel_vbt_defs.h | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/drivers/gpu/drm/i915/display/intel_vbt_defs.h b/drivers/gpu/drm/i915/display/intel_vbt_defs.h index 7df0a6044425..c9ecf3b48999 100644 --- a/drivers/gpu/drm/i915/display/intel_vbt_defs.h +++ b/drivers/gpu/drm/i915/display/intel_vbt_defs.h @@ -571,6 +571,15 @@ struct bdb_display_toggle { u16 list[]; /* ALM only */ } __packed; +/* + * Block 4 - Mode Support List + */ + +struct bdb_mode_support_list { + u8 intel_mode_number[0]; + u16 mode_list_length; +} __packed; + /* * Block 9 - SRD Feature Block */