usb: add usb_otg20_descriptor for OTG 2.0 and above

OTG 2.0 introduces bcdOTG in otg descriptor to identify the OTG and EH
supplement release number with which the OTG device is compliant, this
patch adds structure usb_otg20_descriptor for OTG 2.0 and above.

Signed-off-by: Macpaul Lin <macpaul@gmail.com>
Signed-off-by: Li Jun <jun.li@freescale.com>
Reviewed-by: Roger Quadros <rogerq@ti.com>
Signed-off-by: Felipe Balbi <balbi@ti.com>

diff --git a/include/uapi/linux/usb/ch9.h b/include/uapi/linux/usb/ch9.h
index aa33fd1b2d4f3a7575dc160d906907133119f1d5..aec689941c18c5cf64a39eba7ca90c2244ef5cb7 100644 (file)
--- a/include/uapi/linux/usb/ch9.h
+++ b/include/uapi/linux/usb/ch9.h
@@ -674,6 +674,17 @@ struct usb_otg_descriptor {
        __u8  bmAttributes;     /* support for HNP, SRP, etc */
 } __attribute__ ((packed));
 
+/* USB_DT_OTG (from OTG 2.0 supplement) */
+struct usb_otg20_descriptor {
+       __u8  bLength;
+       __u8  bDescriptorType;
+
+       __u8  bmAttributes;     /* support for HNP, SRP and ADP, etc */
+       __le16 bcdOTG;          /* OTG and EH supplement release number
+                                * in binary-coded decimal(i.e. 2.0 is 0200H)
+                                */
+} __attribute__ ((packed));
+
 /* from usb_otg_descriptor.bmAttributes */
 #define USB_OTG_SRP            (1 << 0)
 #define USB_OTG_HNP            (1 << 1)        /* swap host/device roles */