1 files changed, 13 insertions, 0 deletions

diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
index 00587a1e3c83..3785d66721f2 100644
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -32,6 +32,7 @@
 #include <drm/drm_core.h>
 #include "drm_legacy.h"
 #include "drm_internal.h"
+#include "drm_crtc_internal.h"
 
 #include <linux/pci.h>
 #include <linux/export.h>
@@ -345,6 +346,17 @@ drm_setclientcap(struct drm_device *dev, void *data, struct drm_file *file_priv)
                         return -EINVAL;
                 file_priv->universal_planes = req->value;
                 break;
+        case DRM_CLIENT_CAP_ATOMIC:
+                /* for now, hide behind experimental drm.atomic moduleparam */
+                if (!drm_atomic)
+                        return -EINVAL;
+                if (!drm_core_check_feature(dev, DRIVER_ATOMIC))
+                        return -EINVAL;
+                if (req->value > 1)
+                        return -EINVAL;
+                file_priv->atomic = req->value;
+                file_priv->universal_planes = req->value;
+                break;
         default:
                 return -EINVAL;
         }
@@ -620,6 +632,7 @@ static const struct drm_ioctl_desc drm_ioctls[] = {
         DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_GETPROPERTIES, drm_mode_obj_get_properties_ioctl, DRM_CONTROL_ALLOW|DRM_UNLOCKED),
         DRM_IOCTL_DEF(DRM_IOCTL_MODE_OBJ_SETPROPERTY, drm_mode_obj_set_property_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
         DRM_IOCTL_DEF(DRM_IOCTL_MODE_CURSOR2, drm_mode_cursor2_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
+        DRM_IOCTL_DEF(DRM_IOCTL_MODE_ATOMIC, drm_mode_atomic_ioctl, DRM_MASTER|DRM_CONTROL_ALLOW|DRM_UNLOCKED),
 };
 
 #define DRM_CORE_IOCTL_COUNT    ARRAY_SIZE( drm_ioctls )