usb: gadget: push VID/PID/USB BCD module option into gadgets

[karo-tx-linux.git] / include / linux / usb / composite.h

diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h
index e970fba6dbbbccd9922f4baf354f5a25add2f1a2..7651e5bf74872c63f7960ad5d304cc8f470dcb15 100644 (file)
--- a/include/linux/usb/composite.h
+++ b/include/linux/usb/composite.h
@@ -381,6 +381,30 @@ extern int usb_string_ids_tab(struct usb_composite_dev *c,
                              struct usb_string *str);
 extern int usb_string_ids_n(struct usb_composite_dev *c, unsigned n);
 
+/*
+ * Some systems will need runtime overrides for the  product identifiers
+ * published in the device descriptor, either numbers or strings or both.
+ * String parameters are in UTF-8 (superset of ASCII's 7 bit characters).
+ */
+struct usb_composite_overwrite {
+       u16     idVendor;
+       u16     idProduct;
+       u16     bcdDevice;
+};
+#define USB_GADGET_COMPOSITE_OPTIONS()                                 \
+       static struct usb_composite_overwrite coverwrite;               \
+                                                                       \
+       module_param_named(idVendor, coverwrite.idVendor, ushort, S_IRUGO); \
+       MODULE_PARM_DESC(idVendor, "USB Vendor ID");                    \
+                                                                       \
+       module_param_named(idProduct, coverwrite.idProduct, ushort, S_IRUGO); \
+       MODULE_PARM_DESC(idProduct, "USB Product ID");                  \
+                                                                       \
+       module_param_named(bcdDevice, coverwrite.bcdDevice, ushort, S_IRUGO); \
+       MODULE_PARM_DESC(bcdDevice, "USB Device version (BCD)")
+
+void usb_composite_overwrite_options(struct usb_composite_dev *cdev,
+               struct usb_composite_overwrite *covr);
 
 /* messaging utils */
 #define DBG(d, fmt, args...) \