drm: add plane properties

The omapdrm driver uses this for setting per-overlay rotation.  It
is likely also useful for setting YUV->RGB colorspace conversion
matrix, etc.

Signed-off-by: Rob Clark <rob@ti.com>
Reviewed-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

2 files changed, 26 insertions, 0 deletions

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index e3135c7ee87a..92cea9d77ec9 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -608,6 +608,7 @@ int drm_plane_init(struct drm_device *dev, struct drm_plane *plane,
         if (ret)
                 goto out;
 
+        plane->base.properties = &plane->properties;
         plane->dev = dev;
         plane->funcs = funcs;
         plane->format_types = kmalloc(sizeof(uint32_t) * format_count,
@@ -3199,6 +3200,21 @@ static int drm_mode_crtc_set_obj_prop(struct drm_mode_object *obj,
         return ret;
 }
 
+static int drm_mode_plane_set_obj_prop(struct drm_mode_object *obj,
+                                      struct drm_property *property,
+                                      uint64_t value)
+{
+        int ret = -EINVAL;
+        struct drm_plane *plane = obj_to_plane(obj);
+
+        if (plane->funcs->set_property)
+                ret = plane->funcs->set_property(plane, property, value);
+        if (!ret)
+                drm_object_property_set_value(obj, property, value);
+
+        return ret;
+}
+
 int drm_mode_obj_get_properties_ioctl(struct drm_device *dev, void *data,
                                       struct drm_file *file_priv)
 {
@@ -3300,6 +3316,9 @@ int drm_mode_obj_set_property_ioctl(struct drm_device *dev, void *data,
         case DRM_MODE_OBJECT_CRTC:
                 ret = drm_mode_crtc_set_obj_prop(arg_obj, property, arg->value);
                 break;
+        case DRM_MODE_OBJECT_PLANE:
+                ret = drm_mode_plane_set_obj_prop(arg_obj, property, arg->value);
+                break;
         }
 
 out:
diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index 9b33629e654c..73e45600f95d 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -601,6 +601,7 @@ struct drm_connector {
  * @update_plane: update the plane configuration
  * @disable_plane: shut down the plane
  * @destroy: clean up plane resources
+ * @set_property: called when a property is changed
  */
 struct drm_plane_funcs {
         int (*update_plane)(struct drm_plane *plane,
@@ -611,6 +612,9 @@ struct drm_plane_funcs {
                             uint32_t src_w, uint32_t src_h);
         int (*disable_plane)(struct drm_plane *plane);
         void (*destroy)(struct drm_plane *plane);
+
+        int (*set_property)(struct drm_plane *plane,
+                            struct drm_property *property, uint64_t val);
 };
 
 /**
@@ -628,6 +632,7 @@ struct drm_plane_funcs {
  * @enabled: enabled flag
  * @funcs: helper functions
  * @helper_private: storage for drver layer
+ * @properties: property tracking for this plane
  */
 struct drm_plane {
         struct drm_device *dev;
@@ -650,6 +655,8 @@ struct drm_plane {
 
         const struct drm_plane_funcs *funcs;
         void *helper_private;
+
+        struct drm_object_properties properties;
 };
 
 /**