Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / usb / gadget / udc / gadget_chips.h

diff --git a/kernel/drivers/usb/gadget/udc/gadget_chips.h b/kernel/drivers/usb/gadget/udc/gadget_chips.h
new file mode 100644 (file)
index 0000000..bcd04bc
--- /dev/null
+++ b/kernel/drivers/usb/gadget/udc/gadget_chips.h
@@ -0,0 +1,55 @@
+/*
+ * USB device controllers have lots of quirks.  Use these macros in
+ * gadget drivers or other code that needs to deal with them, and which
+ * autoconfigures instead of using early binding to the hardware.
+ *
+ * This SHOULD eventually work like the ARM mach_is_*() stuff, driven by
+ * some config file that gets updated as new hardware is supported.
+ * (And avoiding all runtime comparisons in typical one-choice configs!)
+ *
+ * NOTE:  some of these controller drivers may not be available yet.
+ * Some are available on 2.4 kernels; several are available, but not
+ * yet pushed in the 2.6 mainline tree.
+ */
+
+#ifndef __GADGET_CHIPS_H
+#define __GADGET_CHIPS_H
+
+#include <linux/usb/gadget.h>
+
+/*
+ * NOTICE: the entries below are alphabetical and should be kept
+ * that way.
+ *
+ * Always be sure to add new entries to the correct position or
+ * accept the bashing later.
+ *
+ * If you have forgotten the alphabetical order let VIM/EMACS
+ * do that for you.
+ */
+#define gadget_is_at91(g)              (!strcmp("at91_udc", (g)->name))
+#define gadget_is_goku(g)              (!strcmp("goku_udc", (g)->name))
+#define gadget_is_musbhdrc(g)          (!strcmp("musb-hdrc", (g)->name))
+#define gadget_is_net2280(g)           (!strcmp("net2280", (g)->name))
+#define gadget_is_pxa(g)               (!strcmp("pxa25x_udc", (g)->name))
+#define gadget_is_pxa27x(g)            (!strcmp("pxa27x_udc", (g)->name))
+
+/**
+ * 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;
+
+       /* Everything else is *presumably* fine ... */
+       return true;
+}
+
+#endif /* __GADGET_CHIPS_H */