usb: gadget: langwell_udc: add usb test mode support

This patch adds test mode support for Langwell gadget driver.

Signed-off-by: Henry Yuan <hang.yuan@intel.com>
Signed-off-by: Andy Luo <yifei.luo@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 10 insertions, 0 deletions

diff --git a/include/linux/usb/ch9.h b/include/linux/usb/ch9.h
index f917bbbc8901..ab461948b579 100644
--- a/include/linux/usb/ch9.h
+++ b/include/linux/usb/ch9.h
@@ -124,6 +124,16 @@
 #define USB_DEVICE_DEBUG_MODE           6       /* (special devices only) */
 
 /*
+ * Test Mode Selectors
+ * See USB 2.0 spec Table 9-7
+ */
+#define TEST_J          1
+#define TEST_K          2
+#define TEST_SE0_NAK    3
+#define TEST_PACKET     4
+#define TEST_FORCE_EN   5
+
+/*
  * New Feature Selectors as added by USB 3.0
  * See USB 3.0 spec Table 9-6
  */