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 A990AC54EE9 for ; Tue, 20 Sep 2022 06:23:34 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id C2D3610E2A6; Tue, 20 Sep 2022 06:23:33 +0000 (UTC) Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTPS id 5E8E110E2A6 for ; Tue, 20 Sep 2022 06:23:30 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=intel.com; i=@intel.com; q=dns/txt; s=Intel; t=1663655010; x=1695191010; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=FCs15209pNaqv4gwLX0Yw1Ms7TPQIeIo5RMes56zHdU=; b=MqWd9J/Rp0gzWhM+A4KNofDNyBVi5I7JsVwUuQQYLC/NYkKe4Kh2oJ04 WX3uwUgXR3p6V0zjA243/mcMIWzxRn6i4Ypjlf5k3lgxK/nmg+VA6uX3v dt7OVgg6QN9lku0LPBcw4/9Bq4P+QY6kmX65D/SDYW0Mw0/ePD4mR04yc HjMgt4XEQdQ3JLSRVW25pSowbIpdqHzxTBPRgOnSxHI0qoky2cvt8PQ0X TMazVBfurf10JMq2s2hwrvCDtJIOqjRHVfdCpdCwSPGdEIauuoIhgVIya sicAgMMapADMswg2uuUHmsc9J2CZGE3eLrBHFWcNzNdsBksTdJkD0690V g==; X-IronPort-AV: E=McAfee;i="6500,9779,10475"; a="300429656" X-IronPort-AV: E=Sophos;i="5.93,329,1654585200"; d="scan'208";a="300429656" Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga102.jf.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Sep 2022 23:23:22 -0700 X-IronPort-AV: E=Sophos;i="5.93,329,1654585200"; d="scan'208";a="621140624" Received: from tsengwil-desk2.itwn.intel.com (HELO gar) ([10.5.231.144]) by fmsmga007-auth.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 19 Sep 2022 23:23:21 -0700 From: William Tseng To: dri-devel@lists.freedesktop.org Subject: [PATCH v4] drm/edid: ignore the CEA modes not defined in CEA-861-D Date: Tue, 20 Sep 2022 14:23:16 +0800 Message-Id: <20220920062316.43162-1-william.tseng@intel.com> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220613122655.12432-1-william.tseng@intel.com> References: <20220613122655.12432-1-william.tseng@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Lee Shawn C , Wayne Lin , William Tseng Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" This is a workaround for HDMI 1.4 sink which has a CEA mode with higher vic than what is defined in CEA-861-D. As an example, a HDMI 1.4 sink has the video format 2560x1080p to be displayed and the video format is indicated by both SVD (with vic 90 and picture aspect ratio 64:27) and DTD. When connecting to such sink, source can't output the video format in SVD because an error is returned by drm_hdmi_avi_infoframe_from_display_mode(), which can't fill the infoframe with picture aspect ratio 64:27 and the vic, which is originally 90 and is changed to 0 by drm_mode_cea_vic(). To work around it, do not set the vic 0 so the corresponding mode may be accepted in drm_hdmi_avi_infoframe_from_display_mode() and be dispalyed. v1: initial version. v2: change the logic in drm_hdmi_avi_infoframe_from_display_mode(). v3: fix typo. v4: add revision history. Cc: Ville Syrjälä Cc: Jani Nikula Cc: Wayne Lin Cc: Lee Shawn C Signed-off-by: William Tseng --- drivers/gpu/drm/drm_edid.c | 10 ++++++---- 1 file changed, 6 insertions(+), 4 deletions(-) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index eaa819381281..3c6a4e09b2d6 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -6640,7 +6640,8 @@ static u8 drm_mode_hdmi_vic(const struct drm_connector *connector, } static u8 drm_mode_cea_vic(const struct drm_connector *connector, - const struct drm_display_mode *mode) + const struct drm_display_mode *mode, + bool is_hdmi2_sink) { u8 vic; @@ -6660,7 +6661,7 @@ static u8 drm_mode_cea_vic(const struct drm_connector *connector, * HDMI 2.0 VIC range: 1 <= VIC <= 107 (CEA-861-F). So we * have to make sure we dont break HDMI 1.4 sinks. */ - if (!is_hdmi2_sink(connector) && vic > 64) + if (!is_hdmi2_sink && vic > 64) return 0; return vic; @@ -6691,7 +6692,7 @@ drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame, if (mode->flags & DRM_MODE_FLAG_DBLCLK) frame->pixel_repeat = 1; - vic = drm_mode_cea_vic(connector, mode); + vic = drm_mode_cea_vic(connector, mode, true); hdmi_vic = drm_mode_hdmi_vic(connector, mode); frame->picture_aspect = HDMI_PICTURE_ASPECT_NONE; @@ -6735,7 +6736,8 @@ drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame, picture_aspect = HDMI_PICTURE_ASPECT_NONE; } - frame->video_code = vic; + frame->video_code = drm_mode_cea_vic(connector, mode, + is_hdmi2_sink(connector)); frame->picture_aspect = picture_aspect; frame->active_aspect = HDMI_ACTIVE_ASPECT_PICTURE; frame->scan_mode = HDMI_SCAN_MODE_UNDERSCAN; -- 2.25.1