X-Git-Url: https://err.no/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=drivers%2Fusb%2Fgadget%2Fgadget_chips.h;h=5246e8fef2b276b28d5e64095fa77493eae91232;hb=5554b35933245e95710d709175e14c02cbc956a4;hp=ca5149ea73125ac9a97260b3e08eefc31b75ec9f;hpb=cdbfc557c43ea1f1f9b7062300ecb1254969814b;p=linux-2.6

diff --git a/drivers/usb/gadget/gadget_chips.h b/drivers/usb/gadget/gadget_chips.h
index ca5149ea73..5246e8fef2 100644
--- 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;
+}