From patchwork Fri Feb 8 18:24:53 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Shankar, Uma" X-Patchwork-Id: 10803601 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 DB49914E1 for ; Fri, 8 Feb 2019 18:01:14 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CCA102EBEB for ; Fri, 8 Feb 2019 18:01:14 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C12622EC83; Fri, 8 Feb 2019 18:01:14 +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 236812EBEB for ; Fri, 8 Feb 2019 18:01:14 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7502D6EE56; Fri, 8 Feb 2019 18:01:09 +0000 (UTC) X-Original-To: intel-gfx@lists.freedesktop.org Delivered-To: intel-gfx@lists.freedesktop.org Received: from mga07.intel.com (mga07.intel.com [134.134.136.100]) by gabe.freedesktop.org (Postfix) with ESMTPS id 88A786EE50; Fri, 8 Feb 2019 18:01:07 +0000 (UTC) X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga007.jf.intel.com ([10.7.209.58]) by orsmga105.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 08 Feb 2019 10:01:07 -0800 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.58,348,1544515200"; d="scan'208";a="113461085" Received: from linuxpresi1-desktop.iind.intel.com ([10.223.25.28]) by orsmga007.jf.intel.com with ESMTP; 08 Feb 2019 10:01:04 -0800 From: Uma Shankar To: intel-gfx@lists.freedesktop.org, dri-devel@lists.freedesktop.org Date: Fri, 8 Feb 2019 23:54:53 +0530 Message-Id: <1549650296-28648-2-git-send-email-uma.shankar@intel.com> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1549650296-28648-1-git-send-email-uma.shankar@intel.com> References: <1549650296-28648-1-git-send-email-uma.shankar@intel.com> Subject: [Intel-gfx] [v15 1/4] drm: Add HDMI colorspace property X-BeenThere: intel-gfx@lists.freedesktop.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Intel graphics driver community testing & development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: ville.syrjala@intel.com, maarten.lankhorst@intel.com MIME-Version: 1.0 Errors-To: intel-gfx-bounces@lists.freedesktop.org Sender: "Intel-gfx" X-Virus-Scanned: ClamAV using ClamSMTP Create a new connector property to program colorspace to sink devices. Modern sink devices support more than 1 type of colorspace like 601, 709, BT2020 etc. This helps to switch based on content type which is to be displayed. The decision lies with compositors as to in which scenarios, a particular colorspace will be picked. This will be helpful mostly to switch to higher gamut colorspaces like BT2020 when the media content is encoded as BT2020. Thereby giving a good visual experience to users. The expectation from userspace is that it should parse the EDID and get supported colorspaces. Use this property and switch to the one supported. Sink supported colorspaces should be retrieved by userspace from EDID and driver will not explicitly expose them. Basically the expectation from userspace is: - Set up CRTC DEGAMMA/CTM/GAMMA to convert to some sink colorspace - Set this new property to let the sink know what it converted the CRTC output to. v2: Addressed Maarten and Ville's review comments. Enhanced the colorspace enum to incorporate both HDMI and DP supported colorspaces. Also, added a default option for colorspace. v3: Removed Adobe references from enum definitions as per Ville, Hans Verkuil and Jonas Karlman suggestions. Changed Default to an unset state where driver will assign the colorspace is not chosen by user, suggested by Ville and Maarten. Addressed other misc review comments from Maarten. Split the changes to have separate colorspace property for DP and HDMI. v4: Addressed Chris and Ville's review comments, and created a common colorspace property for DP and HDMI, filtered the list based on the colorspaces supported by the respective protocol standard. v5: Made the property creation helper accept enum list based on platform capabilties as suggested by Shashank. Consolidated HDMI and DP property creation in the common helper. v6: Addressed Shashank's review comments. v7: Added defines instead of enum in uapi as per Brian Starkey's suggestion in order to go with string matching at userspace. Updated the commit message to add more details as well kernel docs. v8: Addressed Maarten's review comments. v9: Removed macro defines from uapi as per Brian Starkey and Daniel Stone's comments and moved to drm include file. Moved back to older design with exposing all HDMI colorspaces to userspace since infoframe capability is there even on legacy platforms, as per Ville's review comments. v10: Fixed sparse warnings, updated the RB from Maarten and Jani's ack. v11: Addressed Ville's review comments. Updated the Macro naming and added DCI-P3 colorspace as well, defined in CTA 861.G spec. v12: Appended BT709 and SMPTE 170M with YCC information as per Ville's review comment to be clear and not to be confused with RGB. Signed-off-by: Uma Shankar Acked-by: Jani Nikula Reviewed-by: Shashank Sharma Reviewed-by: Maarten Lankhorst --- drivers/gpu/drm/drm_atomic_uapi.c | 4 ++ drivers/gpu/drm/drm_connector.c | 78 +++++++++++++++++++++++++++++++++++++++ include/drm/drm_connector.h | 49 ++++++++++++++++++++++++ 3 files changed, 131 insertions(+) diff --git a/drivers/gpu/drm/drm_atomic_uapi.c b/drivers/gpu/drm/drm_atomic_uapi.c index 0aabd40..4eb81f1 100644 --- a/drivers/gpu/drm/drm_atomic_uapi.c +++ b/drivers/gpu/drm/drm_atomic_uapi.c @@ -746,6 +746,8 @@ static int drm_atomic_connector_set_property(struct drm_connector *connector, return -EINVAL; } state->content_protection = val; + } else if (property == connector->colorspace_property) { + state->colorspace = val; } else if (property == config->writeback_fb_id_property) { struct drm_framebuffer *fb = drm_framebuffer_lookup(dev, NULL, val); int ret = drm_atomic_set_writeback_fb_for_connector(state, fb); @@ -814,6 +816,8 @@ static int drm_atomic_connector_set_property(struct drm_connector *connector, *val = state->picture_aspect_ratio; } else if (property == config->content_type_property) { *val = state->content_type; + } else if (property == connector->colorspace_property) { + *val = state->colorspace; } else if (property == connector->scaling_mode_property) { *val = state->scaling_mode; } else if (property == connector->content_protection_property) { diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index dd40eff..bff96a3 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -826,6 +826,33 @@ int drm_display_info_set_bus_formats(struct drm_display_info *info, }; DRM_ENUM_NAME_FN(drm_get_content_protection_name, drm_cp_enum_list) +static const struct drm_prop_enum_list hdmi_colorspaces[] = { + /* For Default case, driver will set the colorspace */ + { DRM_MODE_COLORIMETRY_DEFAULT, "Default" }, + /* Standard Definition Colorimetry based on CEA 861 */ + { DRM_MODE_COLORIMETRY_SMPTE_170M_YCC, "SMPTE_170M_YCC" }, + { DRM_MODE_COLORIMETRY_BT709_YCC, "BT709_YCC" }, + /* Standard Definition Colorimetry based on IEC 61966-2-4 */ + { DRM_MODE_COLORIMETRY_XVYCC_601, "XVYCC_601" }, + /* High Definition Colorimetry based on IEC 61966-2-4 */ + { DRM_MODE_COLORIMETRY_XVYCC_709, "XVYCC_709" }, + /* Colorimetry based on IEC 61966-2-1/Amendment 1 */ + { DRM_MODE_COLORIMETRY_SYCC_601, "SYCC_601" }, + /* Colorimetry based on IEC 61966-2-5 [33] */ + { DRM_MODE_COLORIMETRY_OPYCC_601, "opYCC_601" }, + /* Colorimetry based on IEC 61966-2-5 */ + { DRM_MODE_COLORIMETRY_OPRGB, "opRGB" }, + /* Colorimetry based on ITU-R BT.2020 */ + { DRM_MODE_COLORIMETRY_BT2020_RGB, "BT2020_RGB" }, + /* Colorimetry based on ITU-R BT.2020 */ + { DRM_MODE_COLORIMETRY_BT2020_YCC, "BT2020_YCC" }, + /* Colorimetry based on ITU-R BT.2020 */ + { DRM_MODE_COLORIMETRY_BT2020_CYCC, "BT2020_CYCC" }, + /* Added as part of Additional Colorimetry Extension in 861.G */ + { DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65, "DCI-P3_RGB_D65" }, + { DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER, "DCI-P3_RGB_Theater" }, +}; + /** * DOC: standard connector properties * @@ -1548,6 +1575,57 @@ int drm_mode_create_aspect_ratio_property(struct drm_device *dev) EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property); /** + * DOC: standard connector properties + * + * Colorspace: + * drm_mode_create_colorspace_property - create colorspace property + * This property helps select a suitable colorspace based on the sink + * capability. Modern sink devices support wider gamut like BT2020. + * This helps switch to BT2020 mode if the BT2020 encoded video stream + * is being played by the user, same for any other colorspace. Thereby + * giving a good visual experience to users. + * + * The expectation from userspace is that it should parse the EDID + * and get supported colorspaces. Use this property and switch to the + * one supported. Sink supported colorspaces should be retrieved by + * userspace from EDID and driver will not explicitly expose them. + * + * Basically the expectation from userspace is: + * - Set up CRTC DEGAMMA/CTM/GAMMA to convert to some sink + * colorspace + * - Set this new property to let the sink know what it + * converted the CRTC output to. + * - This property is just to inform sink what colorspace + * source is trying to drive. + * + * Called by a driver the first time it's needed, must be attached to desired + * connectors. + */ +int drm_mode_create_colorspace_property(struct drm_connector *connector) +{ + struct drm_device *dev = connector->dev; + struct drm_property *prop; + + if (connector->connector_type == DRM_MODE_CONNECTOR_HDMIA || + connector->connector_type == DRM_MODE_CONNECTOR_HDMIB) { + prop = drm_property_create_enum(dev, DRM_MODE_PROP_ENUM, + "Colorspace", + hdmi_colorspaces, + ARRAY_SIZE(hdmi_colorspaces)); + if (!prop) + return -ENOMEM; + } else { + DRM_DEBUG_KMS("Colorspace property not supported\n"); + return 0; + } + + connector->colorspace_property = prop; + + return 0; +} +EXPORT_SYMBOL(drm_mode_create_colorspace_property); + +/** * drm_mode_create_content_type_property - create content type property * @dev: DRM device * diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 8fe22ab..4d9aa2f 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -253,6 +253,41 @@ enum drm_panel_orientation { DRM_MODE_PANEL_ORIENTATION_RIGHT_UP, }; +/* + * This is a consolidated colorimetry list supported by HDMI and + * DP protocol standard. The respective connectors will register + * a property with the subset of this list (supported by that + * respective protocol). Userspace will set the colorspace through + * a colorspace property which will be created and exposed to + * userspace. + */ + +/* For Default case, driver will set the colorspace */ +#define DRM_MODE_COLORIMETRY_DEFAULT 0 +/* CEA 861 Normal Colorimetry options */ +#define DRM_MODE_COLORIMETRY_NO_DATA 0 +#define DRM_MODE_COLORIMETRY_SMPTE_170M_YCC 1 +#define DRM_MODE_COLORIMETRY_BT709_YCC 2 +/* CEA 861 Extended Colorimetry Options */ +#define DRM_MODE_COLORIMETRY_XVYCC_601 3 +#define DRM_MODE_COLORIMETRY_XVYCC_709 4 +#define DRM_MODE_COLORIMETRY_SYCC_601 5 +#define DRM_MODE_COLORIMETRY_OPYCC_601 6 +#define DRM_MODE_COLORIMETRY_OPRGB 7 +#define DRM_MODE_COLORIMETRY_BT2020_RGB 8 +#define DRM_MODE_COLORIMETRY_BT2020_YCC 9 +#define DRM_MODE_COLORIMETRY_BT2020_CYCC 10 +/* Additional Colorimetry extension added as part of CTA 861.G */ +#define DRM_MODE_COLORIMETRY_DCI_P3_RGB_D65 11 +#define DRM_MODE_COLORIMETRY_DCI_P3_RGB_THEATER 12 + +/* DP MSA Colorimetry Options */ +#define DRM_MODE_DP_COLORIMETRY_BT601_YCC 13 +#define DRM_MODE_DP_COLORIMETRY_BT709_YCC 14 +#define DRM_MODE_DP_COLORIMETRY_SRGB 15 +#define DRM_MODE_DP_COLORIMETRY_RGB_WIDE_GAMUT 16 +#define DRM_MODE_DP_COLORIMETRY_SCRGB 17 + /** * struct drm_display_info - runtime data about the connected sink * @@ -503,6 +538,13 @@ struct drm_connector_state { unsigned int content_protection; /** + * @colorspace: State variable for Connector property to request + * colorspace change on Sink. This is most commonly used to switch + * to wider color gamuts like BT2020. + */ + u32 colorspace; + + /** * @writeback_job: Writeback job for writeback connectors * * Holds the framebuffer and out-fence for a writeback connector. As @@ -995,6 +1037,12 @@ struct drm_connector { struct drm_property *content_protection_property; /** + * @colorspace_property: Connector property to set the suitable + * colorspace supported by the sink. + */ + struct drm_property *colorspace_property; + + /** * @path_blob_ptr: * * DRM blob property data for the DP MST path property. This should only @@ -1269,6 +1317,7 @@ int drm_connector_attach_vrr_capable_property( int drm_connector_attach_content_protection_property( struct drm_connector *connector); int drm_mode_create_aspect_ratio_property(struct drm_device *dev); +int drm_mode_create_colorspace_property(struct drm_connector *connector); int drm_mode_create_content_type_property(struct drm_device *dev); void drm_hdmi_avi_infoframe_content_type(struct hdmi_avi_infoframe *frame, const struct drm_connector_state *conn_state);