From patchwork Tue Jan 8 09:11:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Shankar, Uma" X-Patchwork-Id: 10751595 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 5BF0317E1 for ; Tue, 8 Jan 2019 08:49:51 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 4C6D3287D3 for ; Tue, 8 Jan 2019 08:49:51 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 40A8E28B7F; Tue, 8 Jan 2019 08:49:51 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-5.2 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_MED autolearn=unavailable version=3.3.1 Received: from gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher DHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 01C6F287D3 for ; Tue, 8 Jan 2019 08:49:51 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id F01A16EEC8; Tue, 8 Jan 2019 08:48:55 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga18.intel.com (mga18.intel.com [134.134.136.126]) by gabe.freedesktop.org (Postfix) with ESMTPS id C890E6EEB4; Tue, 8 Jan 2019 08:48:50 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from fmsmga007.fm.intel.com ([10.253.24.52]) by orsmga106.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 Jan 2019 00:48:50 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.56,453,1539673200"; d="scan'208";a="113019024" Received: from linuxpresi1-desktop.iind.intel.com ([10.223.25.28]) by fmsmga007.fm.intel.com with ESMTP; 08 Jan 2019 00:48:48 -0800 From: Uma Shankar To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Subject: [v4 03/12] drm: Parse Colorimetry data block from EDID Date: Tue, 8 Jan 2019 14:41:18 +0530 Message-Id: <1546938687-27306-4-git-send-email-uma.shankar@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1546938687-27306-1-git-send-email-uma.shankar@intel.com> References: <1546938687-27306-1-git-send-email-uma.shankar@intel.com> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ville.syrjala@intel.com, emil.l.velikov@gmail.com, Uma Shankar , maarten.lankhorst@intel.com MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP CEA 861.3 spec adds colorimetry data block for HDMI. Parsing the block to get the colorimetry data from panel. v2: Rebase v3: No Change v4: Addressed Shashank's review comments. Updated colorimetry field to 16 bit as DCI-P3 got added in CEA 861-G spec, as pointed out by Shashank. Signed-off-by: Uma Shankar --- drivers/gpu/drm/drm_edid.c | 26 ++++++++++++++++++++++++++ include/drm/drm_connector.h | 3 +++ 2 files changed, 29 insertions(+) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index fa1213e..c964c5c 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -2834,6 +2834,7 @@ static int drm_cvt_modes(struct drm_connector *connector, #define VIDEO_BLOCK 0x02 #define VENDOR_BLOCK 0x03 #define SPEAKER_BLOCK 0x04 +#define COLORIMETRY_DATA_BLOCK 0x5 #define HDR_STATIC_METADATA_BLOCK 0x6 #define USE_EXTENDED_TAG 0x07 #define EXT_VIDEO_CAPABILITY_BLOCK 0x00 @@ -3809,6 +3810,29 @@ static void fixup_detailed_cea_mode_clock(struct drm_display_mode *mode) mode->clock = clock; } +static bool cea_db_is_hdmi_colorimetry_data_block(const u8 *db) +{ + if (cea_db_tag(db) != USE_EXTENDED_TAG) + return false; + + if (db[1] != COLORIMETRY_DATA_BLOCK) + return false; + + return true; +} + +static void +drm_parse_colorimetry_data_block(struct drm_connector *connector, const u8 *db) +{ + struct drm_hdmi_info *info = &connector->display_info.hdmi; + uint16_t len; + + len = cea_db_payload_len_ext(db); + /* As per CEA 861-G spec */ + info->colorimetry = ((db[3] & (0x1 << 7)) << 1) | db[2]; +} + + static bool cea_db_is_hdmi_hdr_metadata_block(const u8 *db) { if (cea_db_tag(db) != USE_EXTENDED_TAG) @@ -4504,6 +4528,8 @@ static void drm_parse_cea_ext(struct drm_connector *connector, drm_parse_y420cmdb_bitmap(connector, db); if (cea_db_is_hdmi_hdr_metadata_block(db)) drm_parse_hdr_metadata_block(connector, db); + if (cea_db_is_hdmi_colorimetry_data_block(db)) + drm_parse_colorimetry_data_block(connector, db); } } diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 4ce74f3..a916195 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -206,6 +206,9 @@ struct drm_hdmi_info { /** @y420_dc_modes: bitmap of deep color support index */ u8 y420_dc_modes; + + /* @colorimetry: bitmap of supported colorimetry modes */ + u16 colorimetry; }; /**