From patchwork Thu Jan 23 22:40:45 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Abhinav Kumar X-Patchwork-Id: 11349267 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 9242F14B4 for ; Thu, 23 Jan 2020 22:41:04 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 6C7AD21D7D for ; Thu, 23 Jan 2020 22:41:04 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="key not found in DNS" (0-bit key) header.d=mg.codeaurora.org header.i=@mg.codeaurora.org header.b="f08raNJZ" Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729274AbgAWWlE (ORCPT ); Thu, 23 Jan 2020 17:41:04 -0500 Received: from mail25.static.mailgun.info ([104.130.122.25]:27909 "EHLO mail25.static.mailgun.info" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728665AbgAWWlD (ORCPT ); Thu, 23 Jan 2020 17:41:03 -0500 DKIM-Signature: a=rsa-sha256; v=1; c=relaxed/relaxed; d=mg.codeaurora.org; q=dns/txt; s=smtp; t=1579819262; h=Message-Id: Date: Subject: Cc: To: From: Sender; bh=sUyB0PskpQ3/B86Mj3Is2hoJIkdFr0MzGEv+qQmoFWc=; b=f08raNJZFYwkzySv3LqWVSza0/YFavqQVnLLJwt6hEbLcCzNQpbom9K21UXDO5oG3VJ5US3Y USoY56qV0FfUaq95y9QXZkan/iuij6WqZESL+D5HuYo6Bsm3XVfwc1Foj5Bpdd2Q329LWFAP nun4g4/PLuNKzhi2f8wNt9SHwiU= X-Mailgun-Sending-Ip: 104.130.122.25 X-Mailgun-Sid: WyI1MzIzYiIsICJsaW51eC1hcm0tbXNtQHZnZXIua2VybmVsLm9yZyIsICJiZTllNGEiXQ== Received: from smtp.codeaurora.org (ec2-35-166-182-171.us-west-2.compute.amazonaws.com [35.166.182.171]) by mxa.mailgun.org with ESMTP id 5e2a20f9.7f734713f308-smtp-out-n02; Thu, 23 Jan 2020 22:40:57 -0000 (UTC) Received: by smtp.codeaurora.org (Postfix, from userid 1001) id 82468C447A4; Thu, 23 Jan 2020 22:40:57 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-caf-mail-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-1.0 required=2.0 tests=ALL_TRUSTED,SPF_NONE autolearn=unavailable autolearn_force=no version=3.4.0 Received: from abhinavk-linux.qualcomm.com (i-global254.qualcomm.com [199.106.103.254]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-SHA256 (128/128 bits)) (No client certificate requested) (Authenticated sender: abhinavk) by smtp.codeaurora.org (Postfix) with ESMTPSA id 009CFC43383; Thu, 23 Jan 2020 22:40:55 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 smtp.codeaurora.org 009CFC43383 Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; dmarc=none (p=none dis=none) header.from=codeaurora.org Authentication-Results: aws-us-west-2-caf-mail-1.web.codeaurora.org; spf=none smtp.mailfrom=abhinavk@codeaurora.org From: Abhinav Kumar To: dri-devel@lists.freedesktop.org Cc: Uma Shankar , linux-arm-msm@vger.kernel.org, robdclark@gmail.com, seanpaul@chromium.org, nganji@codeaurora.org, aravindh@codeaurora.org, adelva@google.com, Abhinav Kumar Subject: [PATCH] drm: Parse Colorimetry data block from EDID Date: Thu, 23 Jan 2020 14:40:45 -0800 Message-Id: <1579819245-21913-1-git-send-email-abhinavk@codeaurora.org> X-Mailer: git-send-email 1.9.1 Sender: linux-arm-msm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-arm-msm@vger.kernel.org From: Uma Shankar CEA 861.3 spec adds colorimetry data block for HDMI. Parsing the block to get the colorimetry data from panel. This was posted by Uma Shankar at https://patchwork.kernel.org/patch/10861327/ Modified by Abhinav Kumar: - Use macros to distinguish the bit fields for clarity Signed-off-by: Uma Shankar Signed-off-by: Abhinav Kumar --- drivers/gpu/drm/drm_edid.c | 54 +++++++++++++++++++++++++++++++++++++++++++++ include/drm/drm_connector.h | 3 +++ include/drm/drm_edid.h | 11 +++++++++ 3 files changed, 68 insertions(+) diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c index 99769d6..148bfa4 100644 --- a/drivers/gpu/drm/drm_edid.c +++ b/drivers/gpu/drm/drm_edid.c @@ -3136,6 +3136,7 @@ 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 @@ -4199,6 +4200,57 @@ 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; + + if (cea_db_payload_len(db) < 2) + 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; + + /* As per CEA 861-G spec */ + /* Byte 3 Bit 0: xvYCC_601 */ + if (db[2] & BIT(0)) + info->colorimetry |= DRM_EDID_CLRMETRY_xvYCC_601; + /* Byte 3 Bit 1: xvYCC_709 */ + if (db[2] & BIT(1)) + info->colorimetry |= DRM_EDID_CLRMETRY_xvYCC_709; + /* Byte 3 Bit 2: sYCC_601 */ + if (db[2] & BIT(2)) + info->colorimetry |= DRM_EDID_CLRMETRY_sYCC_601; + /* Byte 3 Bit 3: ADBYCC_601 */ + if (db[2] & BIT(3)) + info->colorimetry |= DRM_EDID_CLRMETRY_ADBYCC_601; + /* Byte 3 Bit 4: ADB_RGB */ + if (db[2] & BIT(4)) + info->colorimetry |= DRM_EDID_CLRMETRY_ADB_RGB; + /* Byte 3 Bit 5: BT2020_CYCC */ + if (db[2] & BIT(5)) + info->colorimetry |= DRM_EDID_CLRMETRY_BT2020_CYCC; + /* Byte 3 Bit 6: BT2020_YCC */ + if (db[2] & BIT(6)) + info->colorimetry |= DRM_EDID_CLRMETRY_BT2020_YCC; + /* Byte 3 Bit 7: BT2020_RGB */ + if (db[2] & BIT(7)) + info->colorimetry |= DRM_EDID_CLRMETRY_BT2020_RGB; + /* Byte 4 Bit 7: DCI-P3 */ + if (db[3] & BIT(7)) + info->colorimetry |= DRM_EDID_CLRMETRY_DCI_P3; + + DRM_DEBUG_KMS("Supported Colorimetry 0x%x\n", info->colorimetry); +} + static bool cea_db_is_hdmi_hdr_metadata_block(const u8 *db) { if (cea_db_tag(db) != USE_EXTENDED_TAG) @@ -4877,6 +4929,8 @@ static void drm_parse_cea_ext(struct drm_connector *connector, drm_parse_vcdb(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 2219109..a996ee3 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -207,6 +207,9 @@ 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; }; /** diff --git a/include/drm/drm_edid.h b/include/drm/drm_edid.h index f0b03d4..6168c1c 100644 --- a/include/drm/drm_edid.h +++ b/include/drm/drm_edid.h @@ -224,6 +224,17 @@ struct detailed_timing { DRM_EDID_YCBCR420_DC_36 | \ DRM_EDID_YCBCR420_DC_30) +/* Supported Colorimetry from colorimetry data block */ +#define DRM_EDID_CLRMETRY_xvYCC_601 (1 << 0) +#define DRM_EDID_CLRMETRY_xvYCC_709 (1 << 1) +#define DRM_EDID_CLRMETRY_sYCC_601 (1 << 2) +#define DRM_EDID_CLRMETRY_ADBYCC_601 (1 << 3) +#define DRM_EDID_CLRMETRY_ADB_RGB (1 << 4) +#define DRM_EDID_CLRMETRY_BT2020_CYCC (1 << 5) +#define DRM_EDID_CLRMETRY_BT2020_YCC (1 << 6) +#define DRM_EDID_CLRMETRY_BT2020_RGB (1 << 7) +#define DRM_EDID_CLRMETRY_DCI_P3 (1 << 15) + /* ELD Header Block */ #define DRM_ELD_HEADER_BLOCK_SIZE 4