4 files changed, 51 insertions, 0 deletions

diff --git a/drivers/gpu/drm/exynos/exynos_drm_drv.c b/drivers/gpu/drm/exynos/exynos_drm_drv.c
index f58a487e4425..b7a2869582f2 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_drv.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_drv.c
@@ -211,6 +211,8 @@ static struct drm_ioctl_desc exynos_ioctls[] = {
                         DRM_AUTH),
         DRM_IOCTL_DEF_DRV(EXYNOS_GEM_MMAP,
                         exynos_drm_gem_mmap_ioctl, DRM_UNLOCKED | DRM_AUTH),
+        DRM_IOCTL_DEF_DRV(EXYNOS_GEM_GET,
+                        exynos_drm_gem_get_ioctl, DRM_UNLOCKED),
         DRM_IOCTL_DEF_DRV(EXYNOS_PLANE_SET_ZPOS, exynos_plane_set_zpos_ioctl,
                         DRM_UNLOCKED | DRM_AUTH),
         DRM_IOCTL_DEF_DRV(EXYNOS_VIDI_CONNECTION,
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.c b/drivers/gpu/drm/exynos/exynos_drm_gem.c
index 31bb85f5d274..fc91293c4560 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.c
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.c
@@ -604,6 +604,32 @@ int exynos_drm_gem_mmap_ioctl(struct drm_device *dev, void *data,
         return 0;
 }
 
+int exynos_drm_gem_get_ioctl(struct drm_device *dev, void *data,
+                                      struct drm_file *file_priv)
+{       struct exynos_drm_gem_obj *exynos_gem_obj;
+        struct drm_exynos_gem_info *args = data;
+        struct drm_gem_object *obj;
+
+        mutex_lock(&dev->struct_mutex);
+
+        obj = drm_gem_object_lookup(dev, file_priv, args->handle);
+        if (!obj) {
+                DRM_ERROR("failed to lookup gem object.\n");
+                mutex_unlock(&dev->struct_mutex);
+                return -EINVAL;
+        }
+
+        exynos_gem_obj = to_exynos_gem_obj(obj);
+
+        args->flags = exynos_gem_obj->flags;
+        args->size = exynos_gem_obj->size;
+
+        drm_gem_object_unreference(obj);
+        mutex_unlock(&dev->struct_mutex);
+
+        return 0;
+}
+
 int exynos_drm_gem_init_object(struct drm_gem_object *obj)
 {
         DRM_DEBUG_KMS("%s\n", __FILE__);
diff --git a/drivers/gpu/drm/exynos/exynos_drm_gem.h b/drivers/gpu/drm/exynos/exynos_drm_gem.h
index efc82527b272..14d038b6cb02 100644
--- a/drivers/gpu/drm/exynos/exynos_drm_gem.h
+++ b/drivers/gpu/drm/exynos/exynos_drm_gem.h
@@ -127,6 +127,10 @@ int exynos_drm_gem_map_offset_ioctl(struct drm_device *dev, void *data,
 int exynos_drm_gem_mmap_ioctl(struct drm_device *dev, void *data,
                               struct drm_file *file_priv);
 
+/* get buffer information to memory region allocated by gem. */
+int exynos_drm_gem_get_ioctl(struct drm_device *dev, void *data,
+                                      struct drm_file *file_priv);
+
 /* initialize gem object. */
 int exynos_drm_gem_init_object(struct drm_gem_object *obj);
 
diff --git a/include/drm/exynos_drm.h b/include/drm/exynos_drm.h
index 2d6eb06637bf..70c0f7e7db82 100644
--- a/include/drm/exynos_drm.h
+++ b/include/drm/exynos_drm.h
@@ -75,6 +75,21 @@ struct drm_exynos_gem_mmap {
 };
 
 /**
+ * A structure to gem information.
+ *
+ * @handle: a handle to gem object created.
+ * @flags: flag value including memory type and cache attribute and
+ *      this value would be set by driver.
+ * @size: size to memory region allocated by gem and this size would
+ *      be set by driver.
+ */
+struct drm_exynos_gem_info {
+        unsigned int handle;
+        unsigned int flags;
+        uint64_t size;
+};
+
+/**
  * A structure for user connection request of virtual display.
  *
  * @connection: indicate whether doing connetion or not by user.
@@ -113,6 +128,7 @@ enum e_drm_exynos_gem_mem_type {
 #define DRM_EXYNOS_GEM_MAP_OFFSET       0x01
 #define DRM_EXYNOS_GEM_MMAP             0x02
 /* Reserved 0x03 ~ 0x05 for exynos specific gem ioctl */
+#define DRM_EXYNOS_GEM_GET              0x04
 #define DRM_EXYNOS_PLANE_SET_ZPOS       0x06
 #define DRM_EXYNOS_VIDI_CONNECTION      0x07
 
@@ -125,6 +141,9 @@ enum e_drm_exynos_gem_mem_type {
 #define DRM_IOCTL_EXYNOS_GEM_MMAP       DRM_IOWR(DRM_COMMAND_BASE + \
                 DRM_EXYNOS_GEM_MMAP, struct drm_exynos_gem_mmap)
 
+#define DRM_IOCTL_EXYNOS_GEM_GET        DRM_IOWR(DRM_COMMAND_BASE + \
+                DRM_EXYNOS_GEM_GET,     struct drm_exynos_gem_info)
+
 #define DRM_IOCTL_EXYNOS_PLANE_SET_ZPOS DRM_IOWR(DRM_COMMAND_BASE + \
                 DRM_EXYNOS_PLANE_SET_ZPOS, struct drm_exynos_plane_set_zpos)