1 files changed, 16 insertions, 0 deletions

diff --git a/include/drm/drm_crtc.h b/include/drm/drm_crtc.h
index dd2c16e43333..8f760a2373f9 100644
--- a/include/drm/drm_crtc.h
+++ b/include/drm/drm_crtc.h
@@ -137,6 +137,14 @@ struct drm_display_info {
         u8 cea_rev;
 };
 
+/* data corresponds to displayid vend/prod/serial */
+struct drm_tile_group {
+        struct kref refcount;
+        struct drm_device *dev;
+        int id;
+        u8 group_data[8];
+};
+
 struct drm_framebuffer_funcs {
         /* note: use drm_framebuffer_remove() */
         void (*destroy)(struct drm_framebuffer *framebuffer);
@@ -978,6 +986,7 @@ struct drm_mode_config {
         struct drm_modeset_acquire_ctx *acquire_ctx; /* for legacy _lock_all() / _unlock_all() */
         struct mutex idr_mutex; /* for IDR management */
         struct idr crtc_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */
+        struct idr tile_idr; /* use this idr for all IDs, fb, crtc, connector, modes - just makes life easier */
         /* this is limited to one for now */
 
         struct mutex fb_lock; /* proctects global and per-file fb lists */
@@ -1326,6 +1335,13 @@ extern void drm_set_preferred_mode(struct drm_connector *connector,
 extern int drm_edid_header_is_valid(const u8 *raw_edid);
 extern bool drm_edid_block_valid(u8 *raw_edid, int block, bool print_bad_edid);
 extern bool drm_edid_is_valid(struct edid *edid);
+
+extern struct drm_tile_group *drm_mode_create_tile_group(struct drm_device *dev,
+                                                         char topology[8]);
+extern struct drm_tile_group *drm_mode_get_tile_group(struct drm_device *dev,
+                                               char topology[8]);
+extern void drm_mode_put_tile_group(struct drm_device *dev,
+                                   struct drm_tile_group *tg);
 struct drm_display_mode *drm_mode_find_dmt(struct drm_device *dev,
                                            int hsize, int vsize, int fresh,
                                            bool rb);