diff options
Diffstat (limited to 'include/linux')
| -rw-r--r-- | include/linux/usb/composite.h | 10 |
1 files changed, 10 insertions, 0 deletions
diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h index a49a66f2f82..d4f2a49869e 100644 --- a/include/linux/usb/composite.h +++ b/include/linux/usb/composite.h @@ -284,6 +284,8 @@ struct usb_composite_driver { extern int usb_composite_register(struct usb_composite_driver *); extern void usb_composite_unregister(struct usb_composite_driver *); +#define OS_STRING_QW_SIGN_LEN 14 +#define OS_STRING_IDX 0xEE /** * struct usb_composite_device - represents one composite usb gadget @@ -291,6 +293,9 @@ extern void usb_composite_unregister(struct usb_composite_driver *); * @req: used for control responses; buffer is pre-allocated * @bufsiz: size of buffer pre-allocated in @req * @config: the currently active configuration + * @qw_sign: qwSignature part of the OS string + * @b_vendor_code: bMS_VendorCode part of the OS string + * @use_os_string: false by default, interested gadgets set it * * One of these devices is allocated and initialized before the * associated device driver's bind() is called. @@ -324,6 +329,11 @@ struct usb_composite_dev { struct usb_configuration *config; + /* OS String is a custom (yet popular) extension to the USB standard. */ + u8 qw_sign[OS_STRING_QW_SIGN_LEN]; + u8 b_vendor_code; + unsigned int use_os_string:1; + /* private: */ /* internals */ unsigned int suspended:1; |