1 files changed, 18 insertions, 0 deletions

diff --git a/firmware/export/usb_ch9.h b/firmware/export/usb_ch9.h
index 560a737354..f05dbd3265 100644
--- a/firmware/export/usb_ch9.h
+++ b/firmware/export/usb_ch9.h
@@ -109,6 +109,24 @@
 #define USB_REQ_GET_INTERFACE           0x0A
 #define USB_REQ_SET_INTERFACE           0x0B
 #define USB_REQ_SYNCH_FRAME             0x0C
+/*
+ * USB feature flags are written using USB_REQ_{CLEAR,SET}_FEATURE, and
+ * are read as a bit array returned by USB_REQ_GET_STATUS.  (So there
+ * are at most sixteen features of each type.)  Hubs may also support a
+ * new USB_REQ_TEST_AND_SET_FEATURE to put ports into L1 suspend.
+ */
+#define USB_DEVICE_SELF_POWERED         0       /* (read only) */
+#define USB_DEVICE_REMOTE_WAKEUP        1       /* dev may initiate wakeup */
+#define USB_DEVICE_TEST_MODE            2       /* (wired high speed only) */
+#define USB_DEVICE_BATTERY              2       /* (wireless) */
+#define USB_DEVICE_B_HNP_ENABLE         3       /* (otg) dev may initiate HNP */
+#define USB_DEVICE_WUSB_DEVICE          3       /* (wireless)*/
+#define USB_DEVICE_A_HNP_SUPPORT        4       /* (otg) RH port supports HNP */
+#define USB_DEVICE_A_ALT_HNP_SUPPORT    5       /* (otg) other RH port does */
+#define USB_DEVICE_DEBUG_MODE           6       /* (special devices only) */
+
+#define USB_ENDPOINT_HALT               0       /* IN/OUT will STALL */
+
 
 /**
  * struct usb_ctrlrequest - SETUP data for a USB device control request