drm/exynos: added a feature to get gem buffer information.

this patch adds a feature to get a gem buffer information and user application
can get the gem buffer information simply in runtime through gem handle.

Signed-off-by: Inki Dae <inki.dae@samsung.com>
Signed-off-by: Kyungmin Park <kyungmin.park@samsung.com>

1 files changed, 19 insertions, 0 deletions

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)