[PATCH v3 1/4] drm/uapi: add documentation for atomic flags

[Helen Koike <helen.koike@collabora.com>]

add a brief description of the flags used in an atomic commit

Signed-off-by: Helen Koike <helen.koike@collabora.com>
---

Changes in v3: None
Changes in v2: None
Changes in v1: None

 include/uapi/drm/drm_mode.h | 18 +++++++++++++++++-
 1 file changed, 17 insertions(+), 1 deletion(-)

diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
index 83cd1636b9be..88ef2cf04d13 100644
--- a/include/uapi/drm/drm_mode.h
+++ b/include/uapi/drm/drm_mode.h
@@ -729,7 +729,23 @@ struct drm_mode_destroy_dumb {
 	__u32 handle;
 };
 
-/* page-flip flags are valid, plus: */
+/*
+ * drm atomic flags
+ *
+ * page-flip flags are valid, plus:
+ *
+ * DRM_MODE_ATOMIC_TEST_ONLY
+ * Used with fences to check if the Sync File is a valid one.
+ *
+ * DRM_MODE_ATOMIC_NONBLOCK
+ * Perform a normal atomic update but do not block the ioctl until the request
+ * is finished, return the ioctl call immediately.
+ *
+ * DRM_MODE_ATOMIC_ALLOW_MODESET
+ * Indicates whether a full modeset is acceptable or not.
+ */
+
+/*  */
 #define DRM_MODE_ATOMIC_TEST_ONLY 0x0100
 #define DRM_MODE_ATOMIC_NONBLOCK  0x0200
 #define DRM_MODE_ATOMIC_ALLOW_MODESET 0x0400
-- 
2.20.1