4 files changed, 58 insertions, 7 deletions

diff --git a/include/drm/drm_gem.h b/include/drm/drm_gem.h
index 58a18a17c67e..bd42f25e449c 100644
--- a/include/drm/drm_gem.h
+++ b/include/drm/drm_gem.h
@@ -175,6 +175,41 @@ struct drm_gem_object_funcs {
 };
 
 /**
+ * struct drm_gem_lru - A simple LRU helper
+ *
+ * A helper for tracking GEM objects in a given state, to aid in
+ * driver's shrinker implementation.  Tracks the count of pages
+ * for lockless &shrinker.count_objects, and provides
+ * &drm_gem_lru_scan for driver's &shrinker.scan_objects
+ * implementation.
+ */
+struct drm_gem_lru {
+	/**
+	 * @lock:
+	 *
+	 * Lock protecting movement of GEM objects between LRUs.  All
+	 * LRUs that the object can move between should be protected
+	 * by the same lock.
+	 */
+	struct mutex *lock;
+
+	/**
+	 * @count:
+	 *
+	 * The total number of backing pages of the GEM objects in
+	 * this LRU.
+	 */
+	long count;
+
+	/**
+	 * @list:
+	 *
+	 * The LRU list.
+	 */
+	struct list_head list;
+};
+
+/**
  * struct drm_gem_object - GEM buffer object
  *
  * This structure defines the generic parts for GEM buffer objects, which are
@@ -312,6 +347,20 @@ struct drm_gem_object {
 	 *
 	 */
 	const struct drm_gem_object_funcs *funcs;
+
+	/**
+	 * @lru_node:
+	 *
+	 * List node in a &drm_gem_lru.
+	 */
+	struct list_head lru_node;
+
+	/**
+	 * @lru:
+	 *
+	 * The current LRU list that the GEM object is on.
+	 */
+	struct drm_gem_lru *lru;
 };
 
 /**
@@ -420,4 +469,10 @@ void drm_gem_unlock_reservations(struct drm_gem_object **objs, int count,
 int drm_gem_dumb_map_offset(struct drm_file *file, struct drm_device *dev,
 			    u32 handle, u64 *offset);
 
+void drm_gem_lru_init(struct drm_gem_lru *lru, struct mutex *lock);
+void drm_gem_lru_remove(struct drm_gem_object *obj);
+void drm_gem_lru_move_tail(struct drm_gem_lru *lru, struct drm_gem_object *obj);
+unsigned long drm_gem_lru_scan(struct drm_gem_lru *lru, unsigned nr_to_scan,
+			       bool (*shrink)(struct drm_gem_object *obj));
+
 #endif /* __DRM_GEM_H__ */
diff --git a/include/drm/drm_mipi_dsi.h b/include/drm/drm_mipi_dsi.h
index 53e3a8a2f241..20b21b577dea 100644
--- a/include/drm/drm_mipi_dsi.h
+++ b/include/drm/drm_mipi_dsi.h
@@ -179,6 +179,7 @@ struct mipi_dsi_device_info {
  * @lp_rate: maximum lane frequency for low power mode in hertz, this should
  * be set to the real limits of the hardware, zero is only accepted for
  * legacy drivers
+ * @dsc: panel/bridge DSC pps payload to be sent
  */
 struct mipi_dsi_device {
 	struct mipi_dsi_host *host;
@@ -191,6 +192,7 @@ struct mipi_dsi_device {
 	unsigned long mode_flags;
 	unsigned long hs_rate;
 	unsigned long lp_rate;
+	struct drm_dsc_config *dsc;
 };
 
 #define MIPI_DSI_MODULE_PREFIX "mipi-dsi:"
diff --git a/include/drm/drm_panel.h b/include/drm/drm_panel.h
index 3a271128c078..994bfcdd84c5 100644
--- a/include/drm/drm_panel.h
+++ b/include/drm/drm_panel.h
@@ -188,13 +188,6 @@ struct drm_panel {
 	 * Panel entry in registry.
 	 */
 	struct list_head list;
-
-	/**
-	 * @dsc:
-	 *
-	 * Panel DSC pps payload to be sent
-	 */
-	struct drm_dsc_config *dsc;
 };
 
 void drm_panel_init(struct drm_panel *panel, struct device *dev,
diff --git a/include/drm/i915_pciids.h b/include/drm/i915_pciids.h
index 278031aa2e84..4a4c190f7698 100644
--- a/include/drm/i915_pciids.h
+++ b/include/drm/i915_pciids.h
@@ -641,6 +641,7 @@
 	INTEL_VGA_DEVICE(0x4682, info), \
 	INTEL_VGA_DEVICE(0x4688, info), \
 	INTEL_VGA_DEVICE(0x468A, info), \
+	INTEL_VGA_DEVICE(0x468B, info), \
 	INTEL_VGA_DEVICE(0x4690, info), \
 	INTEL_VGA_DEVICE(0x4692, info), \
 	INTEL_VGA_DEVICE(0x4693, info)