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 4D69FC10F16 for ; Mon, 6 May 2024 09:25:13 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 9E2BB10E91C; Mon, 6 May 2024 09:25:12 +0000 (UTC) Authentication-Results: gabe.freedesktop.org; dkim=pass (2048-bit key; unprotected) header.d=intel.com header.i=@intel.com header.b="Ad2pDbdL"; dkim-atps=neutral Received: from mgamail.intel.com (mgamail.intel.com [198.175.65.20]) by gabe.freedesktop.org (Postfix) with ESMTPS id 02DE810E91C for ; Mon, 6 May 2024 09:25:11 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1714987512; x=1746523512; h=from:to:subject:in-reply-to:references:date:message-id: mime-version:content-transfer-encoding; bh=B4sP0rZmUTHLU30iqfMl8f9moLmA8CukwRon9cRobpw=; b=Ad2pDbdLRsnralmYrvo6852yoBa7yMHpGHks/pkV36iqHDEKhfES0VFY Cb52QXYW3x8D6UWSZcGZdlRcx44FkV2FFWx0eI2rb6Ttq4qYD5ryqFKWJ lww1JFK3uIeA+R9HJA8gvtF9yWORzsMibpQIntmCXADQB6B04e+FYaHSO eDH8LE58HVwFbPiYRctS0Z/dld1+WrjQj6d63kxjSYeZ6nSWuvaRHPuRp wYX1gY50twf1320xhBY+9RGS8DCoPxeYUIaHdUL2OXCSTAiPJER8NO9F9 fD9YDsjaXzW7PE5707rctZjON68mpPmTJix3FvRXjyxBSJwR/8FD359oq g==; X-CSE-ConnectionGUID: IYqXCHKMS5qWsA3uG2pJJw== X-CSE-MsgGUID: hs4k+JsuQmmi7ru+sRqN5Q== X-IronPort-AV: E=McAfee;i="6600,9927,11064"; a="10559098" X-IronPort-AV: E=Sophos;i="6.07,257,1708416000"; d="scan'208";a="10559098" Received: from fmviesa007.fm.intel.com ([10.60.135.147]) by orvoesa112.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 May 2024 02:25:11 -0700 X-CSE-ConnectionGUID: xqQg/cDTQECAu03TMPCjPg== X-CSE-MsgGUID: oOquVzShRAWIbl25DLmTMw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="6.07,257,1708416000"; d="scan'208";a="28110759" Received: from lfiedoro-mobl.ger.corp.intel.com (HELO localhost) ([10.245.246.230]) by fmviesa007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 06 May 2024 02:24:58 -0700 From: Jani Nikula To: Ville Syrjala , intel-gfx@lists.freedesktop.org Subject: Re: [PATCH 10/35] drm/i915/bios: Define VBT block 4 (Mode Support List) contents In-Reply-To: <20240503122449.27266-11-ville.syrjala@linux.intel.com> Organization: Intel Finland Oy - BIC 0357606-4 - Westendinkatu 7, 02160 Espoo References: <20240503122449.27266-1-ville.syrjala@linux.intel.com> <20240503122449.27266-11-ville.syrjala@linux.intel.com> Date: Mon, 06 May 2024 12:24:55 +0300 Message-ID: <87edafnvh4.fsf@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Transfer-Encoding: quoted-printable 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" On Fri, 03 May 2024, Ville Syrjala wrote: > From: Ville Syrj=C3=A4l=C3=A4 > > 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 Syrj=C3=A4l=C3=A4 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; >=20=20 > +/* > + * 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 > */ --=20 Jani Nikula, Intel