[PATCH] drm/i915: content-type property for HDMI connector

[StanLis <stanislav.lisovskiy@intel.com>]

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>
---
 drivers/gpu/drm/drm_atomic.c        |  4 ++++
 drivers/gpu/drm/drm_connector.c     | 34 +++++++++++++++++++++++++++++
 drivers/gpu/drm/drm_edid.c          |  1 +
 drivers/gpu/drm/i915/intel_atomic.c |  1 +
 drivers/gpu/drm/i915/intel_drv.h    |  1 +
 drivers/gpu/drm/i915/intel_hdmi.c   |  4 ++++
 drivers/gpu/drm/i915/intel_modes.c  | 10 +++++++++
 include/drm/drm_connector.h         |  2 ++
 include/drm/drm_mode_config.h       |  5 +++++
 include/uapi/drm/drm_mode.h         |  5 +++++
 10 files changed, 67 insertions(+)

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/drivers/gpu/drm/i915/intel_atomic.c b/drivers/gpu/drm/i915/intel_atomic.c
index 40285d1b91b7..61ddb5871d8a 100644
--- a/drivers/gpu/drm/i915/intel_atomic.c
+++ b/drivers/gpu/drm/i915/intel_atomic.c
@@ -124,6 +124,7 @@ int intel_digital_connector_atomic_check(struct drm_connector *conn,
 	if (new_conn_state->force_audio != old_conn_state->force_audio ||
 	    new_conn_state->broadcast_rgb != old_conn_state->broadcast_rgb ||
 	    new_conn_state->base.picture_aspect_ratio != old_conn_state->base.picture_aspect_ratio ||
+	    new_conn_state->base.content_type != old_conn_state->base.content_type ||
 	    new_conn_state->base.scaling_mode != old_conn_state->base.scaling_mode)
 		crtc_state->mode_changed = true;
 
diff --git a/drivers/gpu/drm/i915/intel_drv.h b/drivers/gpu/drm/i915/intel_drv.h
index 5bd2263407b2..07fd7ba21f38 100644
--- a/drivers/gpu/drm/i915/intel_drv.h
+++ b/drivers/gpu/drm/i915/intel_drv.h
@@ -1818,6 +1818,7 @@ int intel_ddc_get_modes(struct drm_connector *c, struct i2c_adapter *adapter);
 void intel_attach_force_audio_property(struct drm_connector *connector);
 void intel_attach_broadcast_rgb_property(struct drm_connector *connector);
 void intel_attach_aspect_ratio_property(struct drm_connector *connector);
+void intel_attach_content_type_property(struct drm_connector *connector);
 
 
 /* intel_overlay.c */
diff --git a/drivers/gpu/drm/i915/intel_hdmi.c b/drivers/gpu/drm/i915/intel_hdmi.c
index ee929f31f7db..cd484276e9b0 100644
--- a/drivers/gpu/drm/i915/intel_hdmi.c
+++ b/drivers/gpu/drm/i915/intel_hdmi.c
@@ -491,6 +491,8 @@ static void intel_hdmi_set_avi_infoframe(struct drm_encoder *encoder,
 					   intel_hdmi->rgb_quant_range_selectable,
 					   is_hdmi2_sink);
 
+	frame.avi.content_type = connector->state->content_type;
+
 	/* TODO: handle pixel repetition for YCBCR420 outputs */
 	intel_write_infoframe(encoder, crtc_state, &frame);
 }
@@ -2065,7 +2067,9 @@ intel_hdmi_add_properties(struct intel_hdmi *intel_hdmi, struct drm_connector *c
 	intel_attach_force_audio_property(connector);
 	intel_attach_broadcast_rgb_property(connector);
 	intel_attach_aspect_ratio_property(connector);
+	intel_attach_content_type_property(connector);
 	connector->state->picture_aspect_ratio = HDMI_PICTURE_ASPECT_NONE;
+	connector->state->content_type = HDMI_CONTENT_TYPE_GRAPHICS;
 }
 
 /*
diff --git a/drivers/gpu/drm/i915/intel_modes.c b/drivers/gpu/drm/i915/intel_modes.c
index b39846613e3c..232811ab71a3 100644
--- a/drivers/gpu/drm/i915/intel_modes.c
+++ b/drivers/gpu/drm/i915/intel_modes.c
@@ -133,3 +133,13 @@ intel_attach_aspect_ratio_property(struct drm_connector *connector)
 			connector->dev->mode_config.aspect_ratio_property,
 			DRM_MODE_PICTURE_ASPECT_NONE);
 }
+
+void
+intel_attach_content_type_property(struct drm_connector *connector)
+{
+	if (!drm_mode_create_content_type_property(connector->dev))
+		drm_object_attach_property(&connector->base,
+			connector->dev->mode_config.content_type_property,
+			DRM_MODE_CONTENT_TYPE_GRAPHICS);
+}
+
diff --git a/include/drm/drm_connector.h b/include/drm/drm_connector.h
index 675cc3f8cf85..b656d6ffdca0 100644
--- a/include/drm/drm_connector.h
+++ b/include/drm/drm_connector.h
@@ -417,6 +417,7 @@ struct drm_connector_state {
 	 * values for &enum hdmi_picture_aspect
 	 */
 	enum hdmi_picture_aspect picture_aspect_ratio;
+	enum hdmi_content_type   content_type;
 
 	/**
 	 * @scaling_mode: Connector property to control the
@@ -1094,6 +1095,7 @@ 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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