From patchwork Mon Aug 19 15:58:56 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: "Lespiau, Damien" X-Patchwork-Id: 2846580 Return-Path: X-Original-To: patchwork-dri-devel@patchwork.kernel.org Delivered-To: patchwork-parsemail@patchwork2.web.kernel.org Received: from mail.kernel.org (mail.kernel.org [198.145.19.201]) by patchwork2.web.kernel.org (Postfix) with ESMTP id C3E60BF546 for ; Mon, 19 Aug 2013 16:12:22 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id AC4A32037E for ; Mon, 19 Aug 2013 16:12:21 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id 0396F2037D for ; Mon, 19 Aug 2013 16:12:17 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id D7B7BE7298 for ; Mon, 19 Aug 2013 09:12:16 -0700 (PDT) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga14.intel.com (mga14.intel.com [143.182.124.37]) by gabe.freedesktop.org (Postfix) with ESMTP id C6528E7252; Mon, 19 Aug 2013 08:59:21 -0700 (PDT) Received: from azsmga001.ch.intel.com ([10.2.17.19]) by azsmga102.ch.intel.com with ESMTP; 19 Aug 2013 08:59:21 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="4.89,914,1367996400"; d="scan'208";a="348428960" Received: from unknown (HELO strange.amr.corp.intel.com) ([10.255.14.123]) by azsmga001.ch.intel.com with ESMTP; 19 Aug 2013 08:59:20 -0700 From: Damien Lespiau To: dri-devel@lists.freedesktop.org Subject: [PATCH 05/14] video/hdmi: Don't let the user of this API create invalid infoframes Date: Mon, 19 Aug 2013 16:58:56 +0100 Message-Id: <1376927945-26635-6-git-send-email-damien.lespiau@intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <1376927945-26635-1-git-send-email-damien.lespiau@intel.com> References: <1376927945-26635-1-git-send-email-damien.lespiau@intel.com> MIME-Version: 1.0 Cc: intel-gfx@lists.freedesktop.org X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org Errors-To: dri-devel-bounces+patchwork-dri-devel=patchwork.kernel.org@lists.freedesktop.org X-Spam-Status: No, score=-7.0 required=5.0 tests=BAYES_00, RCVD_IN_DNSWL_MED, RP_MATCHES_RCVD, UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on mail.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP To set the active aspect ratio value in the AVI infoframe today, you not only have to set the active_aspect field, but also the active_info_valid bit. Out of the 1 user of this API, we had 100% misuse, forgetting the _valid bit. This was fixed in: Author: Damien Lespiau Date: Tue Aug 6 20:32:17 2013 +0100 drm: Don't generate invalid AVI infoframes for CEA modes We can do better and derive the _valid bit from the user wanting to set the active aspect ratio. v2: Fix multi-lines comment style (Thierry Reding) Signed-off-by: Damien Lespiau Reviewed-by: Ville Syrjälä --- drivers/gpu/drm/drm_edid.c | 1 - drivers/video/hdmi.c | 6 +++++- include/linux/hdmi.h | 1 - 3 files changed, 5 insertions(+), 3 deletions(-) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 2381abd..d76d608 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -3259,7 +3259,6 @@ drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame, frame->video_code = drm_match_cea_mode(mode); frame->picture_aspect = HDMI_PICTURE_ASPECT_NONE; - frame->active_info_valid = 1; frame->active_aspect = HDMI_ACTIVE_ASPECT_PICTURE; return 0; diff --git a/drivers/video/hdmi.c b/drivers/video/hdmi.c index 635d569..7ccc118 100644 --- a/drivers/video/hdmi.c +++ b/drivers/video/hdmi.c @@ -96,7 +96,11 @@ ssize_t hdmi_avi_infoframe_pack(struct hdmi_avi_infoframe *frame, void *buffer, ptr[0] = ((frame->colorspace & 0x3) << 5) | (frame->scan_mode & 0x3); - if (frame->active_info_valid) + /* + * Data byte 1, bit 4 has to be set if we provide the active format + * aspect ratio + */ + if (frame->active_aspect & 0xf) ptr[0] |= BIT(4); if (frame->horizontal_bar_valid) diff --git a/include/linux/hdmi.h b/include/linux/hdmi.h index bc6743e..931474c6 100644 --- a/include/linux/hdmi.h +++ b/include/linux/hdmi.h @@ -109,7 +109,6 @@ struct hdmi_avi_infoframe { unsigned char version; unsigned char length; enum hdmi_colorspace colorspace; - bool active_info_valid; bool horizontal_bar_valid; bool vertical_bar_valid; enum hdmi_scan_mode scan_mode;