From patchwork Wed Oct 16 14:58:50 2013 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: Thomas Wood X-Patchwork-Id: 3053921 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 6107BBF924 for ; Wed, 16 Oct 2013 15:34:49 +0000 (UTC) Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 370D4204AB for ; Wed, 16 Oct 2013 15:34:48 +0000 (UTC) Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) by mail.kernel.org (Postfix) with ESMTP id D7BB120466 for ; Wed, 16 Oct 2013 15:34:46 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 3C6F6E6537 for ; Wed, 16 Oct 2013 08:34:46 -0700 (PDT) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mail-wi0-f180.google.com (mail-wi0-f180.google.com [209.85.212.180]) by gabe.freedesktop.org (Postfix) with ESMTP id 7DE96E811B for ; Wed, 16 Oct 2013 07:58:54 -0700 (PDT) Received: by mail-wi0-f180.google.com with SMTP id ey11so913558wid.1 for ; Wed, 16 Oct 2013 07:58:53 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20130820; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-type:content-transfer-encoding; bh=CqhdfoRKEcYvsuZGlRgTpzmTNxg2DIlMsB4g8zBbxAo=; b=V+s2g1E6UcsVFJAkRrAyZcBGJ1jGN1kveuoxJT/GBHMUE2RuY6P3x3I7ublcQtdbZu LBdeH11bPsL1I3ch0W8rmZSIpKeXJssDc6GJseqSNObz0CHJI9pkEdEn5W00tDGV2Uqm IuylxpShV3SsCS/1pYHKAMHRGppe0z1pGd2B5J0kgLuWPCuULAb5G0H9cGJJGroaxd9w Zrz+mE/SqL2scJsWjKLCCeSxE/EF3q8I1JnG4sVzNC6O8P9GxY62+0DpHZhoPDEJi2LA 1XjrqCF9TAilXJOE0b//fsv625kDjBAPoCEkdI2e3G7IO8r594+Ixc24FiFTYNqVTbL7 nTLg== X-Gm-Message-State: ALoCoQklB2Ce++zSevYMiSCtmCNKGr8rOjKYZZvy4BLw66Hj2ngA7xH96RkMZY82eKIennMb78Ni X-Received: by 10.180.11.6 with SMTP id m6mr24690223wib.52.1381935533457; Wed, 16 Oct 2013 07:58:53 -0700 (PDT) Received: from pistachio.icx.intel.com ([83.217.123.106]) by mx.google.com with ESMTPSA id e1sm6665217wij.6.2013.10.16.07.58.51 for (version=TLSv1.2 cipher=AES128-GCM-SHA256 bits=128/128); Wed, 16 Oct 2013 07:58:52 -0700 (PDT) From: Thomas Wood To: ville.syrjala@linux.intel.com Subject: [PATCH v3] drm: add support for additional stereo 3D modes Date: Wed, 16 Oct 2013 15:58:50 +0100 Message-Id: <1381935530-6393-1-git-send-email-thomas.wood@intel.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: <20131015175554.GP13047@intel.com> References: <20131015175554.GP13047@intel.com> MIME-Version: 1.0 Cc: intel-gfx@lists.freedesktop.org, dri-devel@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=-4.7 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 Parse the 3D_Structure_ALL and 3D_MASK fields of the HDMI Vendor Specific Data Block to expose more stereo 3D modes. v2: Use (1 << 0) for consistency. (Ville Syrjälä) Skip adding any modes if 3D_MASK is indicated as being present but the length only includes 3D_Structure_ALL. (Ville Syrjälä) Check that the value of HDMI_3D_LEN is large enough to include 3D_Structure_ALL and 3D_MASK, if they are present. (Ville Syrjälä) v3: Increment offset before the length checks. (Ville Syrjälä) Signed-off-by: Thomas Wood Reviewed-by: Ville Syrjälä --- drivers/gpu/drm/drm_edid.c | 103 +++++++++++++++++++++++++++++++++++++++++---- 1 file changed, 94 insertions(+), 9 deletions(-) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 9e81609..f1764ec 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -2652,6 +2652,50 @@ static int add_hdmi_mode(struct drm_connector *connector, u8 vic) return 1; } +static int add_3d_struct_modes(struct drm_connector *connector, u16 structure, + const u8 *video_db, u8 video_len, u8 video_index) +{ + struct drm_device *dev = connector->dev; + struct drm_display_mode *newmode; + int modes = 0; + u8 cea_mode; + + if (video_db == NULL || video_index > video_len) + return 0; + + /* CEA modes are numbered 1..127 */ + cea_mode = (video_db[video_index] & 127) - 1; + if (cea_mode >= ARRAY_SIZE(edid_cea_modes)) + return 0; + + if (structure & (1 << 0)) { + newmode = drm_mode_duplicate(dev, &edid_cea_modes[cea_mode]); + if (newmode) { + newmode->flags |= DRM_MODE_FLAG_3D_FRAME_PACKING; + drm_mode_probed_add(connector, newmode); + modes++; + } + } + if (structure & (1 << 6)) { + newmode = drm_mode_duplicate(dev, &edid_cea_modes[cea_mode]); + if (newmode) { + newmode->flags |= DRM_MODE_FLAG_3D_TOP_AND_BOTTOM; + drm_mode_probed_add(connector, newmode); + modes++; + } + } + if (structure & (1 << 8)) { + newmode = drm_mode_duplicate(dev, &edid_cea_modes[cea_mode]); + if (newmode) { + newmode->flags = DRM_MODE_FLAG_3D_SIDE_BY_SIDE_HALF; + drm_mode_probed_add(connector, newmode); + modes++; + } + } + + return modes; +} + /* * do_hdmi_vsdb_modes - Parse the HDMI Vendor Specific data block * @connector: connector corresponding to the HDMI sink @@ -2662,10 +2706,13 @@ static int add_hdmi_mode(struct drm_connector *connector, u8 vic) * also adds the stereo 3d modes when applicable. */ static int -do_hdmi_vsdb_modes(struct drm_connector *connector, const u8 *db, u8 len) +do_hdmi_vsdb_modes(struct drm_connector *connector, const u8 *db, u8 len, + const u8 *video_db, u8 video_len) { - int modes = 0, offset = 0, i; - u8 vic_len; + int modes = 0, offset = 0, i, multi_present = 0; + u8 vic_len, hdmi_3d_len = 0; + u16 mask; + u16 structure_all; if (len < 8) goto out; @@ -2689,11 +2736,16 @@ do_hdmi_vsdb_modes(struct drm_connector *connector, const u8 *db, u8 len) /* 3D_Present */ offset++; - if (db[8 + offset] & (1 << 7)) + if (db[8 + offset] & (1 << 7)) { modes += add_hdmi_mandatory_stereo_modes(connector); + /* 3D_Multi_present */ + multi_present = (db[8 + offset] & 0x60) >> 5; + } + offset++; vic_len = db[8 + offset] >> 5; + hdmi_3d_len = db[8 + offset] & 0x1f; for (i = 0; i < vic_len && len >= (9 + offset + i); i++) { u8 vic; @@ -2701,6 +2753,35 @@ do_hdmi_vsdb_modes(struct drm_connector *connector, const u8 *db, u8 len) vic = db[9 + offset + i]; modes += add_hdmi_mode(connector, vic); } + offset += 1 + vic_len; + + if (!(multi_present == 1 || multi_present == 2)) + goto out; + + if ((multi_present == 1 && len < (9 + offset)) || + (multi_present == 2 && len < (11 + offset))) + goto out; + + if ((multi_present == 1 && hdmi_3d_len < 2) || + (multi_present == 2 && hdmi_3d_len < 4)) + goto out; + + /* 3D_Structure_ALL */ + structure_all = (db[8 + offset] << 8) | db[9 + offset]; + + /* check if 3D_MASK is present */ + if (multi_present == 2) + mask = (db[10 + offset] << 8) | db[11 + offset]; + else + mask = 0xffff; + + for (i = 0; i < 16; i++) { + if (mask & (1 << i)) + modes += add_3d_struct_modes(connector, + structure_all, + video_db, + video_len, i); + } out: return modes; @@ -2759,8 +2840,8 @@ static int add_cea_modes(struct drm_connector *connector, struct edid *edid) { const u8 *cea = drm_find_cea_extension(edid); - const u8 *db, *hdmi = NULL; - u8 dbl, hdmi_len; + const u8 *db, *hdmi = NULL, *video = NULL; + u8 dbl, hdmi_len, video_len = 0; int modes = 0; if (cea && cea_revision(cea) >= 3) { @@ -2773,8 +2854,11 @@ add_cea_modes(struct drm_connector *connector, struct edid *edid) db = &cea[i]; dbl = cea_db_payload_len(db); - if (cea_db_tag(db) == VIDEO_BLOCK) - modes += do_cea_modes(connector, db + 1, dbl); + if (cea_db_tag(db) == VIDEO_BLOCK) { + video = db + 1; + video_len = dbl; + modes += do_cea_modes(connector, video, dbl); + } else if (cea_db_is_hdmi_vsdb(db)) { hdmi = db; hdmi_len = dbl; @@ -2787,7 +2871,8 @@ add_cea_modes(struct drm_connector *connector, struct edid *edid) * be patching their flags when the sink supports stereo 3D. */ if (hdmi) - modes += do_hdmi_vsdb_modes(connector, hdmi, hdmi_len); + modes += do_hdmi_vsdb_modes(connector, hdmi, hdmi_len, video, + video_len); return modes; }