From patchwork Mon Jun 19 16:08:14 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Sharma, Shashank" X-Patchwork-Id: 9796641 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 03DF7600C5 for ; Mon, 19 Jun 2017 16:06:09 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id E833726247 for ; Mon, 19 Jun 2017 16:06:08 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id DB9CF26B39; Mon, 19 Jun 2017 16:06:08 +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=-4.2 required=2.0 tests=BAYES_00, 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 4689326247 for ; Mon, 19 Jun 2017 16:06:08 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 81DC96E1FD; Mon, 19 Jun 2017 16:05:37 +0000 (UTC) X-Original-To: dri-devel@lists.freedesktop.org Delivered-To: dri-devel@lists.freedesktop.org Received: from mga09.intel.com (mga09.intel.com [134.134.136.24]) by gabe.freedesktop.org (Postfix) with ESMTPS id 22DC06E1F9; Mon, 19 Jun 2017 16:05:36 +0000 (UTC) Received: from fmsmga001.fm.intel.com ([10.253.24.23]) by orsmga102.jf.intel.com with ESMTP/TLS/DHE-RSA-AES256-GCM-SHA384; 19 Jun 2017 09:05:35 -0700 X-ExtLoop1: 1 X-IronPort-AV: E=Sophos; i="5.39,361,1493708400"; d="scan'208"; a="1162219323" Received: from shashanks-linuxbox.iind.intel.com ([10.223.161.29]) by fmsmga001.fm.intel.com with ESMTP; 19 Jun 2017 09:05:33 -0700 From: Shashank Sharma To: dri-devel@lists.freedesktop.org, intel-gfx@lists.freedesktop.org, ville.syrjala@linux.intel.com Subject: [PATCH v4 07/15] drm: create hdmi output property Date: Mon, 19 Jun 2017 21:38:14 +0530 Message-Id: <1497888502-24980-8-git-send-email-shashank.sharma@intel.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1497888502-24980-1-git-send-email-shashank.sharma@intel.com> References: <1497888502-24980-1-git-send-email-shashank.sharma@intel.com> Cc: Daniel Vetter , Jose Abreu X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.18 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , MIME-Version: 1.0 Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" X-Virus-Scanned: ClamAV using ClamSMTP HDMI displays can support various output types, based on the color space and subsampling type. The possible outputs from a HDMI 2.0 monitor could be: - RGB - YCBCR 444 - YCBCR 422 - YCBCR 420 This patch adds a drm property "hdmi_output_format", using which, a user can specify its preference, for the HDMI output type. The output type enums are similar to the mentioned outputs above. To handle various subsampling of YCBCR output types, this property allows two special cases: - DRM_HDMI_OUTPUT_YCBCR_HQ This indicates preferred output should be YCBCR output, with highest subsampling rate by the source/sink, which can be typically: - ycbcr444 - ycbcr422 - ycbcr420 - DRM_HDMI_OUTPUT_YCBCR_LQ This indicates preferred output should be YCBCR output, with lowest subsampling rate supported by source/sink, which can be: - ycbcr420 - ycbcr422 - ycbcr444 Default value of the property is set to 0 = RGB, so no changes if you dont set the property. PS: While doing modeset for YCBCR 420 only modes, this property is ignored, as those timings can be supported only in YCBCR 420 output mode. V2: Added description for the new variable to address build warning V3: Rebase Cc: Ville Syrjala Cc: Jose Abreu Cc: Daniel Vetter Signed-off-by: Shashank Sharma --- drivers/gpu/drm/drm_atomic.c | 2 ++ drivers/gpu/drm/drm_atomic_helper.c | 4 ++++ drivers/gpu/drm/drm_connector.c | 32 ++++++++++++++++++++++++++++++++ include/drm/drm_connector.h | 18 ++++++++++++++++++ include/drm/drm_mode_config.h | 5 +++++ 5 files changed, 61 insertions(+) diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c index 77dcef0..9f1d46d 100644 --- a/drivers/gpu/drm/drm_atomic.c +++ b/drivers/gpu/drm/drm_atomic.c @@ -1192,6 +1192,8 @@ int drm_atomic_connector_set_property(struct drm_connector *connector, state->picture_aspect_ratio = val; } else if (property == connector->scaling_mode_property) { state->scaling_mode = val; + } else if (property == config->hdmi_output_property) { + state->hdmi_output = val; } else if (connector->funcs->atomic_set_property) { return connector->funcs->atomic_set_property(connector, state, property, val); diff --git a/drivers/gpu/drm/drm_atomic_helper.c b/drivers/gpu/drm/drm_atomic_helper.c index 86d3093..1356b3f 100644 --- a/drivers/gpu/drm/drm_atomic_helper.c +++ b/drivers/gpu/drm/drm_atomic_helper.c @@ -637,6 +637,10 @@ drm_atomic_helper_check_modeset(struct drm_device *dev, if (old_connector_state->link_status != new_connector_state->link_status) new_crtc_state->connectors_changed = true; + + if (old_connector_state->hdmi_output != + new_connector_state->hdmi_output) + new_crtc_state->connectors_changed = true; } if (funcs->atomic_check) diff --git a/drivers/gpu/drm/drm_connector.c b/drivers/gpu/drm/drm_connector.c index 5cd61af..f3c5928 100644 --- a/drivers/gpu/drm/drm_connector.c +++ b/drivers/gpu/drm/drm_connector.c @@ -227,6 +227,11 @@ int drm_connector_init(struct drm_device *dev, config->edid_property, 0); + if (connector_type != DRM_MODE_CONNECTOR_VIRTUAL) + drm_object_attach_property(&connector->base, + config->hdmi_output_property, + 0); + drm_object_attach_property(&connector->base, config->dpms_property, 0); @@ -617,6 +622,26 @@ static const struct drm_prop_enum_list drm_link_status_enum_list[] = { }; DRM_ENUM_NAME_FN(drm_get_link_status_name, drm_link_status_enum_list) +static const struct drm_prop_enum_list drm_hdmi_output_enum_list[] = { + { DRM_HDMI_OUTPUT_DEFAULT_RGB, "output_rgb" }, + { DRM_HDMI_OUTPUT_YCBCR444, "output_ycbcr444" }, + { DRM_HDMI_OUTPUT_YCBCR422, "output_ycbcr422" }, + { DRM_HDMI_OUTPUT_YCBCR420, "output_ycbcr420" }, + { DRM_HDMI_OUTPUT_YCBCR_HQ, "output_ycbcr_high_subsampling" }, + { DRM_HDMI_OUTPUT_YCBCR_LQ, "output_ycbcr_low_subsampling" }, + { DRM_HDMI_OUTPUT_INVALID, "invalid_output" }, +}; + +/** + * drm_get_hdmi_output_name - return a string for a given hdmi output enum + * @type: enum of output type + */ +const char *drm_get_hdmi_output_name(enum drm_hdmi_output_type type) +{ + return drm_hdmi_output_enum_list[type].name; +} +EXPORT_SYMBOL(drm_get_hdmi_output_name); + /** * drm_display_info_set_bus_formats - set the supported bus formats * @info: display info to store bus formats in @@ -789,6 +814,13 @@ int drm_connector_create_standard_properties(struct drm_device *dev) return -ENOMEM; dev->mode_config.link_status_property = prop; + prop = drm_property_create_enum(dev, 0, "hdmi_output_format", + drm_hdmi_output_enum_list, + ARRAY_SIZE(drm_hdmi_output_enum_list)); + if (!prop) + return -ENOMEM; + dev->mode_config.hdmi_output_property = prop; + return 0; } diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h index 1305fe9..5ba1f32 100644 --- a/include/drm/drm_connector.h +++ b/include/drm/drm_connector.h @@ -321,6 +321,17 @@ struct drm_tv_connector_state { unsigned int hue; }; +/* HDMI output pixel format */ +enum drm_hdmi_output_type { + DRM_HDMI_OUTPUT_DEFAULT_RGB, /* default RGB */ + DRM_HDMI_OUTPUT_YCBCR444, /* YCBCR 444 */ + DRM_HDMI_OUTPUT_YCBCR422, /* YCBCR 422 */ + DRM_HDMI_OUTPUT_YCBCR420, /* YCBCR 420 */ + DRM_HDMI_OUTPUT_YCBCR_HQ, /* Highest subsampled YUV */ + DRM_HDMI_OUTPUT_YCBCR_LQ, /* Lowest subsampled YUV */ + DRM_HDMI_OUTPUT_INVALID, /* Guess what ? */ +}; + /** * struct drm_connector_state - mutable connector state * @connector: backpointer to the connector @@ -365,6 +376,12 @@ struct drm_connector_state { * upscaling, mostly used for built-in panels. */ unsigned int scaling_mode; + + /** + * @hdmi_output: Connector property to control the + * HDMI output mode (RGB/YCBCR444/422/420). + */ + enum drm_hdmi_output_type hdmi_output; }; /** @@ -993,6 +1010,7 @@ static inline void drm_connector_unreference(struct drm_connector *connector) const char *drm_get_connector_status_name(enum drm_connector_status status); const char *drm_get_subpixel_order_name(enum subpixel_order order); +const char *drm_get_hdmi_output_name(enum drm_hdmi_output_type type); const char *drm_get_dpms_name(int val); const char *drm_get_dvi_i_subconnector_name(int val); const char *drm_get_dvi_i_select_name(int val); diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h index 4298171..1887261 100644 --- a/include/drm/drm_mode_config.h +++ b/include/drm/drm_mode_config.h @@ -740,6 +740,11 @@ struct drm_mode_config { * the position of the output on the host's screen. */ struct drm_property *suggested_y_property; + /** + * @hdmi_output_property: output pixel format from HDMI display + * Default is set for RGB + */ + struct drm_property *hdmi_output_property; /* dumb ioctl parameters */ uint32_t preferred_depth, prefer_shadow;