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-rw-r--r--include/uapi/drm/i915_drm.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/include/uapi/drm/i915_drm.h b/include/uapi/drm/i915_drm.h
index 25695c3d9a76..464547d08173 100644
--- a/include/uapi/drm/i915_drm.h
+++ b/include/uapi/drm/i915_drm.h
@@ -421,6 +421,11 @@ typedef struct drm_i915_irq_wait {
/* Query the mask of slices available for this system */
#define I915_PARAM_SLICE_MASK 46
+/* Assuming it's uniform for each slice, this queries the mask of subslices
+ * per-slice for this system.
+ */
+#define I915_PARAM_SUBSLICE_MASK 47
+
typedef struct drm_i915_getparam {
__s32 param;
/*