[PATCH v1 1/2] drm: content-type property for HDMI connector

16 Apr 2018

From: Stanislav Lisovskiy stanislav.lisovskiy@intel.com
Added content_type property to
drm_connector_state in order to properly handle
external HDMI TV content-type setting.
Signed-off-by: Stanislav Lisovskiy stanislav.lisovskiy@intel.com
---
 Documentation/gpu/kms-properties.csv |  1 +
 drivers/gpu/drm/drm_atomic.c         |  4 ++++
 drivers/gpu/drm/drm_connector.c      | 34 ++++++++++++++++++++++++++++
 drivers/gpu/drm/drm_edid.c           |  1 +
 include/drm/drm_connector.h          | 10 ++++++++
 include/drm/drm_mode_config.h        |  5 ++++
 include/uapi/drm/drm_mode.h          |  5 ++++
 7 files changed, 60 insertions(+)

diff --git a/Documentation/gpu/kms-properties.csv b/Documentation/gpu/kms-properties.csv
index 6b28b014cb7d..7a02b2782f33 100644
--- a/Documentation/gpu/kms-properties.csv
+++ b/Documentation/gpu/kms-properties.csv
@@ -17,6 +17,7 @@ Owner Module/Drivers,Group,Property Name,Type,Property Values,Object attached,De
 ,Virtual GPU,“suggested X”,RANGE,"Min=0, Max=0xffffffff",Connector,property to suggest an X offset for a connector
 ,,“suggested Y”,RANGE,"Min=0, Max=0xffffffff",Connector,property to suggest an Y offset for a connector
 ,Optional,"""aspect ratio""",ENUM,"{ ""None"", ""4:3"", ""16:9"" }",Connector,TDB
+,Optional,"""content type""",ENUM,"{ ""Graphics"", ""Photo"", ""Cinema"", ""Game"" }",Connector,TDB
 i915,Generic,"""Broadcast RGB""",ENUM,"{ ""Automatic"", ""Full"", ""Limited 16:235"" }",Connector,"When this property is set to Limited 16:235 and CTM is set, the hardware will be programmed with the result of the multiplication of CTM by the limited range matrix to ensure the pixels normaly in the range 0..1.0 are remapped to the range 16/255..235/255."
 ,,“audio”,ENUM,"{ ""force-dvi"", ""off"", ""auto"", ""on"" }",Connector,TBD
 ,SDVO-TV,“mode”,ENUM,"{ ""NTSC_M"", ""NTSC_J"", ""NTSC_443"", ""PAL_B"" } etc.",Connector,TBD
diff --git a/drivers/gpu/drm/drm_atomic.c b/drivers/gpu/drm/drm_atomic.c
index 7d25c42f22db..72fd2a1c801f 100644
--- a/drivers/gpu/drm/drm_atomic.c
+++ b/drivers/gpu/drm/drm_atomic.c
@@ -1266,6 +1266,8 @@ static int drm_atomic_connector_set_property(struct drm_connector *connector,
    		state->link_status = val;
    } else if (property == config->aspect_ratio_property) {
    	state->picture_aspect_ratio = val;
+	} else if (property == config->content_type_property) {
+		state->content_type = val;
    } else if (property == connector->scaling_mode_property) {
    	state->scaling_mode = val;
    } else if (property == connector->content_protection_property) {
@@ -1351,6 +1353,8 @@ drm_atomic_connector_get_property(struct drm_connector *connector,
    	*val = state->link_status;
    } else if (property == config->aspect_ratio_property) {
    	*val = state->picture_aspect_ratio;
+	} else if (property == config->content_type_property) {
+		*val = state->content_type;
    } 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 b3cde897cd80..d03586edd483 100644
--- a/drivers/gpu/drm/drm_connector.c
+++ b/drivers/gpu/drm/drm_connector.c
@@ -720,6 +720,13 @@ static const struct drm_prop_enum_list drm_aspect_ratio_enum_list[] = {
    { DRM_MODE_PICTURE_ASPECT_16_9, "16:9" },
 };
+static const struct drm_prop_enum_list drm_content_type_enum_list[] = {
+	{ DRM_MODE_CONTENT_TYPE_GRAPHICS, "GRAPHICS" },
+	{ DRM_MODE_CONTENT_TYPE_PHOTO, "PHOTO" },
+	{ DRM_MODE_CONTENT_TYPE_CINEMA, "CINEMA" },
+	{ DRM_MODE_CONTENT_TYPE_GAME, "GAME" },
+};
+
 static const struct drm_prop_enum_list drm_panel_orientation_enum_list[] = {
    { DRM_MODE_PANEL_ORIENTATION_NORMAL,	"Normal"	},
    { DRM_MODE_PANEL_ORIENTATION_BOTTOM_UP,	"Upside Down"	},
@@ -1260,6 +1267,33 @@ int drm_mode_create_aspect_ratio_property(struct drm_device *dev)
 }
 EXPORT_SYMBOL(drm_mode_create_aspect_ratio_property);
+/**
+ * drm_mode_create_content_type_property - create content type property
+ * @dev: DRM device
+ *
+ * Called by a driver the first time it's needed, must be attached to desired
+ * connectors.
+ *
+ * Returns:
+ * Zero on success, negative errno on failure.
+ */
+int drm_mode_create_content_type_property(struct drm_device *dev)
+{
+	if (dev->mode_config.content_type_property)
+		return 0;
+
+	dev->mode_config.content_type_property =
+		drm_property_create_enum(dev, 0, "content type",
+				drm_content_type_enum_list,
+				ARRAY_SIZE(drm_content_type_enum_list));
+
+	if (dev->mode_config.content_type_property == NULL)
+		return -ENOMEM;
+
+	return 0;
+}
+EXPORT_SYMBOL(drm_mode_create_content_type_property);
+
 /**
  * drm_mode_create_suggested_offset_properties - create suggests offset properties
  * @dev: DRM device
diff --git a/drivers/gpu/drm/drm_edid.c b/drivers/gpu/drm/drm_edid.c
index 134069f36482..946a182e0201 100644
--- a/drivers/gpu/drm/drm_edid.c
+++ b/drivers/gpu/drm/drm_edid.c
@@ -4867,6 +4867,7 @@ drm_hdmi_avi_infoframe_from_display_mode(struct hdmi_avi_infoframe *frame,
    }
frame->picture_aspect = HDMI_PICTURE_ASPECT_NONE;
+	frame->content_type = HDMI_CONTENT_TYPE_GRAPHICS;
/*
     * Populate picture aspect ratio from either
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 675cc3f8cf85..90bd85922344 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -418,6 +418,15 @@ struct drm_connector_state {
     */
    enum hdmi_picture_aspect picture_aspect_ratio;
+	/**
+	 * @content_type: Connector property to control the
+	 * HDMI infoframe content type setting.
+	 *
+	 * The %DRM_MODE_CONTENT_TYPE_* values much match the
+	 * values for &enum hdmi_content_type
+	 */
+	enum hdmi_content_type   content_type;
+
    /**
     * @scaling_mode: Connector property to control the
     * upscaling, mostly used for built-in panels.
@@ -1094,6 +1103,7 @@ int drm_connector_attach_scaling_mode_property(struct drm_connector *connector,
 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_content_type_property(struct drm_device *dev);
 int drm_mode_create_suggested_offset_properties(struct drm_device *dev);
int drm_mode_connector_set_path_property(struct drm_connector *connector,
diff --git a/include/drm/drm_mode_config.h b/include/drm/drm_mode_config.h
index 33b3a96d66d0..fb45839179dd 100644
--- a/include/drm/drm_mode_config.h
+++ b/include/drm/drm_mode_config.h
@@ -726,6 +726,11 @@ struct drm_mode_config {
     * HDMI infoframe aspect ratio setting.
     */
    struct drm_property *aspect_ratio_property;
+	/**
+	 * @content_type_property: Optional connector property to control the
+	 * HDMI infoframe content type setting.
+	 */
+	struct drm_property *content_type_property;
    /**
     * @degamma_lut_property: Optional CRTC property to set the LUT used to
     * convert the framebuffer's colors to linear gamma.
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
index 50bcf4214ff9..d9f1b290d2a6 100644
--- a/include/uapi/drm/drm_mode.h
+++ b/include/uapi/drm/drm_mode.h
@@ -94,6 +94,11 @@ extern "C" {
 #define DRM_MODE_PICTURE_ASPECT_4_3		1
 #define DRM_MODE_PICTURE_ASPECT_16_9		2
+#define DRM_MODE_CONTENT_TYPE_GRAPHICS		0
+#define DRM_MODE_CONTENT_TYPE_PHOTO		1
+#define DRM_MODE_CONTENT_TYPE_CINEMA		2
+#define DRM_MODE_CONTENT_TYPE_GAME		3
+
 /* Aspect ratio flag bitmask (4 bits 22:19) */
 #define DRM_MODE_FLAG_PIC_AR_MASK		(0x0F<<19)
 #define  DRM_MODE_FLAG_PIC_AR_NONE \
-- 
2.17.0


    

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[PATCH v1 1/2] drm: content-type property for HDMI connector