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

This patch moves the module options idVendor, idProduct and bcdDevice
from composite.c into each gadgets. This ensures compatibility with
current gadgets and removes the global variable which brings me step
closer towards composite.c in libcomposite

Acked-by: Michal Nazarewicz <mina86@mina86.com>
Signed-off-by: Sebastian Andrzej Siewior <bigeasy@linutronix.de>
Signed-off-by: Felipe Balbi <balbi@ti.com>

1 files changed, 24 insertions, 0 deletions

diff --git a/include/linux/usb/composite.h b/include/linux/usb/composite.h
index e970fba6dbbb..7651e5bf7487 100644
--- 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...) \