drm: create struct drm_object_properties and use it

For now, only connectors have it. In the future, all objects that need
properties should use it. Since the structure is referenced inside
struct drm_mode_object, we will be able to deal with object properties
without knowing the real type of the object.
Reviewed-by: Eugeni Dodonov <eugeni.dodonov@intel.com>
Reviewed-by: Rob Clark <rob.clark@linaro.org>
Tested-by: Rob Clark <rob.clark@linaro.org>
Signed-off-by: Paulo Zanoni <paulo.r.zanoni@intel.com>
Signed-off-by: Dave Airlie <airlied@redhat.com>

drivers/gpu/drm/drm_crtc.c

@@ -483,6 +483,7 @@ int drm_connector_init(struct drm_device *dev,
 	if (ret)
 		goto out;
 
+	connector->base.properties = &connector->properties;
 	connector->dev = dev;
 	connector->funcs = funcs;
 	connector->connector_type = connector_type;
@@ -1424,8 +1425,8 @@ int drm_mode_getconnector(struct drm_device *dev, void *data,
 	}
 	connector = obj_to_connector(obj);
 
-	for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
-		if (connector->property_ids[i] != 0) {
+	for (i = 0; i < DRM_OBJECT_MAX_PROPERTY; i++) {
+		if (connector->properties.ids[i] != 0) {
 			props_count++;
 		}
 	}
@@ -1481,15 +1482,15 @@ int drm_mode_getconnector(struct drm_device *dev, void *data,
 		copied = 0;
 		prop_ptr = (uint32_t __user *)(unsigned long)(out_resp->props_ptr);
 		prop_values = (uint64_t __user *)(unsigned long)(out_resp->prop_values_ptr);
-		for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
-			if (connector->property_ids[i] != 0) {
-				if (put_user(connector->property_ids[i],
+		for (i = 0; i < DRM_OBJECT_MAX_PROPERTY; i++) {
+			if (connector->properties.ids[i] != 0) {
+				if (put_user(connector->properties.ids[i],
 					     prop_ptr + copied)) {
 					ret = -EFAULT;
 					goto out;
 				}
 
-				if (put_user(connector->property_values[i],
+				if (put_user(connector->properties.values[i],
 					     prop_values + copied)) {
 					ret = -EFAULT;
 					goto out;
@@ -2824,16 +2825,16 @@ void drm_connector_attach_property(struct drm_connector *connector,
 {
 	int i;
 
-	for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
-		if (connector->property_ids[i] == 0) {
-			connector->property_ids[i] = property->base.id;
-			connector->property_values[i] = init_val;
+	for (i = 0; i < DRM_OBJECT_MAX_PROPERTY; i++) {
+		if (connector->properties.ids[i] == 0) {
+			connector->properties.ids[i] = property->base.id;
+			connector->properties.values[i] = init_val;
 			return;
 		}
 	}
 
 	WARN(1, "Failed to attach connector property. Please increase "
-		"DRM_CONNECTOR_MAX_PROPERTY by 1 for each time you see this "
+		"DRM_OBJECT_MAX_PROPERTY by 1 for each time you see this "
 		"message\n");
 }
 EXPORT_SYMBOL(drm_connector_attach_property);
@@ -2843,14 +2844,14 @@ int drm_connector_property_set_value(struct drm_connector *connector,
 {
 	int i;
 
-	for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
-		if (connector->property_ids[i] == property->base.id) {
-			connector->property_values[i] = value;
+	for (i = 0; i < DRM_OBJECT_MAX_PROPERTY; i++) {
+		if (connector->properties.ids[i] == property->base.id) {
+			connector->properties.values[i] = value;
 			break;
 		}
 	}
 
-	if (i == DRM_CONNECTOR_MAX_PROPERTY)
+	if (i == DRM_OBJECT_MAX_PROPERTY)
 		return -EINVAL;
 	return 0;
 }
@@ -2861,14 +2862,14 @@ int drm_connector_property_get_value(struct drm_connector *connector,
 {
 	int i;
 
-	for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
-		if (connector->property_ids[i] == property->base.id) {
-			*val = connector->property_values[i];
+	for (i = 0; i < DRM_OBJECT_MAX_PROPERTY; i++) {
+		if (connector->properties.ids[i] == property->base.id) {
+			*val = connector->properties.values[i];
 			break;
 		}
 	}
 
-	if (i == DRM_CONNECTOR_MAX_PROPERTY)
+	if (i == DRM_OBJECT_MAX_PROPERTY)
 		return -EINVAL;
 	return 0;
 }
@@ -3113,12 +3114,12 @@ int drm_mode_connector_property_set_ioctl(struct drm_device *dev,
 	}
 	connector = obj_to_connector(obj);
 
-	for (i = 0; i < DRM_CONNECTOR_MAX_PROPERTY; i++) {
-		if (connector->property_ids[i] == out_resp->prop_id)
+	for (i = 0; i < DRM_OBJECT_MAX_PROPERTY; i++) {
+		if (connector->properties.ids[i] == out_resp->prop_id)
 			break;
 	}
 
-	if (i == DRM_CONNECTOR_MAX_PROPERTY) {
+	if (i == DRM_OBJECT_MAX_PROPERTY) {
 		goto out;
 	}
 

include/drm/drm_crtc.h

@@ -36,6 +36,7 @@
 struct drm_device;
 struct drm_mode_set;
 struct drm_framebuffer;
+struct drm_object_properties;
 
 
 #define DRM_MODE_OBJECT_CRTC 0xcccccccc
@@ -50,6 +51,13 @@ struct drm_framebuffer;
 struct drm_mode_object {
 	uint32_t id;
 	uint32_t type;
+	struct drm_object_properties *properties;
+};
+
+#define DRM_OBJECT_MAX_PROPERTY 16
+struct drm_object_properties {
+	uint32_t ids[DRM_OBJECT_MAX_PROPERTY];
+	uint64_t values[DRM_OBJECT_MAX_PROPERTY];
 };
 
 /*
@@ -451,7 +459,6 @@ struct drm_encoder_funcs {
 };
 
 #define DRM_CONNECTOR_MAX_UMODES 16
-#define DRM_CONNECTOR_MAX_PROPERTY 16
 #define DRM_CONNECTOR_LEN 32
 #define DRM_CONNECTOR_MAX_ENCODER 3
 
@@ -520,8 +527,7 @@ enum drm_connector_force {
  * @funcs: connector control functions
  * @user_modes: user added mode list
  * @edid_blob_ptr: DRM property containing EDID if present
- * @property_ids: property tracking for this connector
- * @property_values: value pointers or data for properties
+ * @properties: property tracking for this connector
  * @polled: a %DRM_CONNECTOR_POLL_<foo> value for core driven polling
  * @dpms: current dpms state
  * @helper_private: mid-layer private data
@@ -565,8 +571,7 @@ struct drm_connector {
 
 	struct list_head user_modes;
 	struct drm_property_blob *edid_blob_ptr;
-	u32 property_ids[DRM_CONNECTOR_MAX_PROPERTY];
-	uint64_t property_values[DRM_CONNECTOR_MAX_PROPERTY];
+	struct drm_object_properties properties;
 
 	uint8_t polled; /* DRM_CONNECTOR_POLL_* */