[PATCH 2/4] drm: Add plane type property

[Matt Roper]

Add a plane type property to allow userspace to distinguish
sprite/overlay planes from primary planes.  In the future we may extend
this to cover cursor planes as well.

Signed-off-by: Matt Roper <matthew.d.roper at intel.com>
---
 drivers/gpu/drm/drm_crtc.c  | 32 ++++++++++++++++++++++++++++++++
 include/drm/drm_crtc.h      |  1 +
 include/uapi/drm/drm_mode.h |  3 +++
 3 files changed, 36 insertions(+)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 21c6d4b..1032eaf 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -114,6 +114,14 @@ static const struct drm_prop_enum_list drm_dpms_enum_list[] =
 
 DRM_ENUM_NAME_FN(drm_get_dpms_name, drm_dpms_enum_list)
 
+static const struct drm_prop_enum_list drm_plane_type_enum_list[] =
+{
+	{ DRM_MODE_PLANE_TYPE_SPRITE, "Sprite" },
+	{ DRM_MODE_PLANE_TYPE_PRIMARY, "Primary" },
+};
+
+DRM_ENUM_NAME_FN(drm_get_plane_type, drm_plane_type_enum_list)
+
 /*
  * Optional properties
  */
@@ -1046,6 +1054,10 @@ int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
 		INIT_LIST_HEAD(&plane->head);
 	}
 
+	drm_object_attach_property(&plane->base,
+				   dev->mode_config.plane_type_property,
+				   DRM_MODE_PLANE_TYPE_SPRITE);
+
  out:
 	drm_modeset_unlock_all(dev);
 
@@ -1114,6 +1126,10 @@ int drm_plane_set_primary(struct drm_device *dev, struct drm_plane *plane,
 	dev->mode_config.num_primary_plane++;
 	INIT_LIST_HEAD(&plane->head);
 
+	drm_object_attach_property(&plane->base,
+				   dev->mode_config.plane_type_property,
+				   DRM_MODE_PLANE_TYPE_PRIMARY);
+
  out:
 	drm_modeset_unlock_all(dev);
 
@@ -1236,6 +1252,21 @@ static int drm_mode_create_standard_connector_properties(struct drm_device *dev)
 	return 0;
 }
 
+static int drm_mode_create_standard_plane_properties(struct drm_device *dev)
+{
+	struct drm_property *type;
+
+	/*
+	 * Standard properties (apply to all planes)
+	 */
+	type = drm_property_create_enum(dev, 0,
+					"TYPE", drm_plane_type_enum_list,
+					ARRAY_SIZE(drm_plane_type_enum_list));
+	dev->mode_config.plane_type_property = type;
+
+	return 0;
+}
+
 /**
  * drm_mode_create_dvi_i_properties - create DVI-I specific connector properties
  * @dev: DRM device
@@ -4211,6 +4242,7 @@ void drm_mode_config_init(struct drm_device *dev)
 
 	drm_modeset_lock_all(dev);
 	drm_mode_create_standard_connector_properties(dev);
+	drm_mode_create_standard_plane_properties(dev);
 	drm_modeset_unlock_all(dev);
 
 	/* Just to be sure */
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 33a955b..d25cd9c 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -884,6 +884,7 @@ struct drm_mode_config {
 	struct list_head property_blob_list;
 	struct drm_property *edid_property;
 	struct drm_property *dpms_property;
+	struct drm_property *plane_type_property;
 
 	/* DVI-I properties */
 	struct drm_property *dvi_i_subconnector_property;
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
index f104c26..c19705b 100644
--- a/include/uapi/drm/drm_mode.h
+++ b/include/uapi/drm/drm_mode.h
@@ -496,4 +496,7 @@ struct drm_mode_destroy_dumb {
 	uint32_t handle;
 };
 
+#define DRM_MODE_PLANE_TYPE_SPRITE  0
+#define DRM_MODE_PLANE_TYPE_PRIMARY 1
+
 #endif
-- 
1.8.5.1