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path: root/drivers/gpu/drm/rcar-du/rcar_du_group.h
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Diffstat (limited to 'drivers/gpu/drm/rcar-du/rcar_du_group.h')
-rw-r--r--drivers/gpu/drm/rcar-du/rcar_du_group.h5
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/gpu/drm/rcar-du/rcar_du_group.h b/drivers/gpu/drm/rcar-du/rcar_du_group.h
index 0c38cdcda4ca..ed36433fbe84 100644
--- a/drivers/gpu/drm/rcar-du/rcar_du_group.h
+++ b/drivers/gpu/drm/rcar-du/rcar_du_group.h
@@ -14,6 +14,8 @@
#ifndef __RCAR_DU_GROUP_H__
#define __RCAR_DU_GROUP_H__
+#include <linux/mutex.h>
+
#include "rcar_du_plane.h"
struct rcar_du_device;
@@ -25,6 +27,7 @@ struct rcar_du_device;
* @index: group index
* @use_count: number of users of the group (rcar_du_group_(get|put))
* @used_crtcs: number of CRTCs currently in use
+ * @lock: protects the DPTSR register
* @planes: planes handled by the group
*/
struct rcar_du_group {
@@ -35,6 +38,8 @@ struct rcar_du_group {
unsigned int use_count;
unsigned int used_crtcs;
+ struct mutex lock;
+
struct rcar_du_planes planes;
};