[CI 31/42] drm/xe: Introduce helper to get tile from memory region

[Oak Zeng <oak.zeng@intel.com>]

Introduce a simple helper to retrieve tile from memory region

v1: move the function to xe_device.h (Matt)
    improve commit message, add kerneldoc (Thomas)
v2: move the function to xe_tile.h (Matt)

Cc: Thomas Hellström <thomas.hellstrom@linux.intel.com>
Cc: Matthew Brost <matthew.brost@intel.com>
Cc: Brian Welty <brian.welty@intel.com>
Cc: Himal Prasad Ghimiray <himal.prasad.ghimiray@intel.com>
Signed-off-by: Oak Zeng <oak.zeng@intel.com>
---
 drivers/gpu/drm/xe/xe_tile.h | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/drivers/gpu/drm/xe/xe_tile.h b/drivers/gpu/drm/xe/xe_tile.h
index 1c9e42ade6b0..091c5a98110a 100644
--- a/drivers/gpu/drm/xe/xe_tile.h
+++ b/drivers/gpu/drm/xe/xe_tile.h
@@ -15,4 +15,12 @@ int xe_tile_init_noalloc(struct xe_tile *tile);
 
 void xe_tile_migrate_wait(struct xe_tile *tile);
 
+/**
+ * xe_mem_region_to_tile() - retrieve tile from memory region
+ * @mr: the memory region we retrieve tile from
+ */
+static inline struct xe_tile *xe_mem_region_to_tile(struct xe_mem_region *mr)
+{
+	return container_of(mr, struct xe_tile, mem.vram);
+}
 #endif
-- 
2.26.3