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Diffstat (limited to 'include/uapi/drm')
-rw-r--r--include/uapi/drm/drm.h7
-rw-r--r--include/uapi/drm/drm_mode.h7
2 files changed, 14 insertions, 0 deletions
diff --git a/include/uapi/drm/drm.h b/include/uapi/drm/drm.h
index b0b855613641..f7b2baf7ecb2 100644
--- a/include/uapi/drm/drm.h
+++ b/include/uapi/drm/drm.h
@@ -654,6 +654,13 @@ struct drm_get_cap {
*/
#define DRM_CLIENT_CAP_UNIVERSAL_PLANES 2
+/**
+ * DRM_CLIENT_CAP_ATOMIC
+ *
+ * If set to 1, the DRM core will expose atomic properties to userspace
+ */
+#define DRM_CLIENT_CAP_ATOMIC 3
+
/** DRM_IOCTL_SET_CLIENT_CAP ioctl argument type */
struct drm_set_client_cap {
__u64 capability;
diff --git a/include/uapi/drm/drm_mode.h b/include/uapi/drm/drm_mode.h
index aae71cb32123..b8f9c0f2e7fe 100644
--- a/include/uapi/drm/drm_mode.h
+++ b/include/uapi/drm/drm_mode.h
@@ -272,6 +272,13 @@ struct drm_mode_get_connector {
#define DRM_MODE_PROP_OBJECT DRM_MODE_PROP_TYPE(1)
#define DRM_MODE_PROP_SIGNED_RANGE DRM_MODE_PROP_TYPE(2)
+/* the PROP_ATOMIC flag is used to hide properties from userspace that
+ * is not aware of atomic properties. This is mostly to work around
+ * older userspace (DDX drivers) that read/write each prop they find,
+ * witout being aware that this could be triggering a lengthy modeset.
+ */
+#define DRM_MODE_PROP_ATOMIC 0x80000000
+
struct drm_mode_property_enum {
__u64 value;
char name[DRM_PROP_NAME_LEN];