[PATCH RFC 2/2] drm: add plane properties

[Rob Clark <rob.clark@linaro.org>]

From: Rob Clark <rob@ti.com>

The omapdrm driver uses this for setting per-overlay rotation.  It
is likely also useful for setting YUV->RGB colorspace conversion
matrix, etc.
---
 drivers/gpu/drm/drm_crtc.c |   19 +++++++++++++++++++
 include/drm/drm_crtc.h     |    5 +++++
 2 files changed, 24 insertions(+), 0 deletions(-)

diff --git a/drivers/gpu/drm/drm_crtc.c b/drivers/gpu/drm/drm_crtc.c
index 2b462f6..b158b72 100644
--- a/drivers/gpu/drm/drm_crtc.c
+++ b/drivers/gpu/drm/drm_crtc.c
@@ -606,6 +606,7 @@ 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,
@@ -3163,6 +3164,21 @@ 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)
 {
@@ -3268,6 +3284,9 @@ 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 28e9a78..b5017c9 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -618,6 +618,9 @@ 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);
 };
 
 /**
@@ -657,6 +660,8 @@ struct drm_plane {
 
 	const struct drm_plane_funcs *funcs;
 	void *helper_private;
+
+	struct drm_object_properties properties;
 };
 
 /**
-- 
1.7.9.1