drm: add support for monotonic vblank timestamps

[mirror_ubuntu-bionic-kernel.git] / drivers / gpu / drm / drm_ioctl.c

diff --git a/drivers/gpu/drm/drm_ioctl.c b/drivers/gpu/drm/drm_ioctl.c
index 23dd97506f28f0f58fe57a2d0b0b132c4aebe074..e77bd8b57df2acd666a2c3dc8d7cacf1540c5c74 100644 (file)
--- a/drivers/gpu/drm/drm_ioctl.c
+++ b/drivers/gpu/drm/drm_ioctl.c
@@ -287,6 +287,9 @@ int drm_getcap(struct drm_device *dev, void *data, struct drm_file *file_priv)
                req->value |= dev->driver->prime_fd_to_handle ? DRM_PRIME_CAP_IMPORT : 0;
                req->value |= dev->driver->prime_handle_to_fd ? DRM_PRIME_CAP_EXPORT : 0;
                break;
+       case DRM_CAP_TIMESTAMP_MONOTONIC:
+               req->value = drm_timestamp_monotonic;
+               break;
        default:
                return -EINVAL;
        }