LXR linux/drivers/usb/gadget/gadget

   1/*
   2 * USB device controllers have lots of quirks.  Use these macros in
   3 * gadget drivers or other code that needs to deal with them, and which
   4 * autoconfigures instead of using early binding to the hardware.
   5 *
   6 * This SHOULD eventually work like the ARM mach_is_*() stuff, driven by
   7 * some config file that gets updated as new hardware is supported.
   8 * (And avoiding all runtime comparisons in typical one-choice configs!)
   9 *
  10 * NOTE:  some of these controller drivers may not be available yet.
  11 * Some are available on 2.4 kernels; several are available, but not
  12 * yet pushed in the 2.6 mainline tree.
  13 */
  14
  15#ifndef __GADGET_CHIPS_H
  16#define __GADGET_CHIPS_H
  17
  18#include <linux/usb/gadget.h>
  19
  20/*
  21 * NOTICE: the entries below are alphabetical and should be kept
  22 * that way.
  23 *
  24 * Always be sure to add new entries to the correct position or
  25 * accept the bashing later.
  26 *
  27 * If you have forgotten the alphabetical order let VIM/EMACS
  28 * do that for you.
  29 */
  30#define gadget_is_at91(g)               (!strcmp("at91_udc", (g)->name))
  31#define gadget_is_goku(g)               (!strcmp("goku_udc", (g)->name))
  32#define gadget_is_musbhdrc(g)           (!strcmp("musb-hdrc", (g)->name))
  33#define gadget_is_net2280(g)            (!strcmp("net2280", (g)->name))
  34#define gadget_is_pxa(g)                (!strcmp("pxa25x_udc", (g)->name))
  35#define gadget_is_pxa27x(g)             (!strcmp("pxa27x_udc", (g)->name))
  36
  37/**
  38 * gadget_supports_altsettings - return true if altsettings work
  39 * @gadget: the gadget in question
  40 */
  41static inline bool gadget_supports_altsettings(struct usb_gadget *gadget)
  42{
  43        /* PXA 21x/25x/26x has no altsettings at all */
  44        if (gadget_is_pxa(gadget))
  45                return false;
  46
  47        /* PXA 27x and 3xx have *broken* altsetting support */
  48        if (gadget_is_pxa27x(gadget))
  49                return false;
  50
  51        /* Everything else is *presumably* fine ... */
  52        return true;
  53}
  54
  55#endif /* __GADGET_CHIPS_H */
  56