usb ethernet gadget: split CDC Ethernet function

[linux-2.6-omap-h63xx.git] / drivers / usb / gadget / gadget_chips.h

diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h
index ca5149ea73125ac9a97260b3e08eefc31b75ec9f..5246e8fef2b276b28d5e64095fa77493eae91232 100644 (file)
--- a/drivers/usb/gadget/gadget_chips.h
+++ b/drivers/usb/gadget/gadget_chips.h
@@ -214,3 +214,26 @@ static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
                return 0x21;
        return -ENOENT;
 }
+
+
+/**
+ * gadget_supports_altsettings - return true if altsettings work
+ * @gadget: the gadget in question
+ */
+static inline bool gadget_supports_altsettings(struct usb_gadget *gadget)
+{
+       /* PXA 21x/25x/26x has no altsettings at all */
+       if (gadget_is_pxa(gadget))
+               return false;
+
+       /* PXA 27x and 3xx have *broken* altsetting support */
+       if (gadget_is_pxa27x(gadget))
+               return false;
+
+       /* SH3 hardware just doesn't do altsettings */
+       if (gadget_is_sh(gadget))
+               return false;
+
+       /* Everything else is *presumably* fine ... */
+       return true;
+}