drivers/usb/gadget/gadget_chips.h

   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 /*
  19  * NOTICE: the entries below are alphabetical and should be kept
  20  * that way.
  21  *
  22  * Always be sure to add new entries to the correct position or
  23  * accept the bashing later.
  24  *
  25  * If you have forgotten the alphabetical order let VIM/EMACS
  26  * do that for you.
  27  */
  28 #define gadget_is_amd5536udc(g)         (!strcmp("amd5536udc", (g)->name))
  29 #define gadget_is_at91(g)               (!strcmp("at91_udc", (g)->name))
  30 #define gadget_is_atmel_usba(g)         (!strcmp("atmel_usba_udc", (g)->name))
  31 #define gadget_is_ci13xxx_msm(g)        (!strcmp("ci13xxx_msm", (g)->name))
  32 #define gadget_is_ci13xxx_pci(g)        (!strcmp("ci13xxx_pci", (g)->name))
  33 #define gadget_is_dummy(g)              (!strcmp("dummy_udc", (g)->name))
  34 #define gadget_is_fsl_qe(g)             (!strcmp("fsl_qe_udc", (g)->name))
  35 #define gadget_is_fsl_usb2(g)           (!strcmp("fsl-usb2-udc", (g)->name))
  36 #define gadget_is_goku(g)               (!strcmp("goku_udc", (g)->name))
  37 #define gadget_is_imx(g)                (!strcmp("imx_udc", (g)->name))
  38 #define gadget_is_langwell(g)           (!strcmp("langwell_udc", (g)->name))
  39 #define gadget_is_m66592(g)             (!strcmp("m66592_udc", (g)->name))
  40 #define gadget_is_musbhdrc(g)           (!strcmp("musb-hdrc", (g)->name))
  41 #define gadget_is_net2272(g)            (!strcmp("net2272", (g)->name))
  42 #define gadget_is_net2280(g)            (!strcmp("net2280", (g)->name))
  43 #define gadget_is_omap(g)               (!strcmp("omap_udc", (g)->name))
  44 #define gadget_is_pch(g)                (!strcmp("pch_udc", (g)->name))
  45 #define gadget_is_pxa(g)                (!strcmp("pxa25x_udc", (g)->name))
  46 #define gadget_is_pxa27x(g)             (!strcmp("pxa27x_udc", (g)->name))
  47 #define gadget_is_r8a66597(g)           (!strcmp("r8a66597_udc", (g)->name))
  48 #define gadget_is_renesas_usbhs(g)      (!strcmp("renesas_usbhs_udc", (g)->name))
  49 #define gadget_is_s3c2410(g)            (!strcmp("s3c2410_udc", (g)->name))
  50 #define gadget_is_s3c_hsotg(g)          (!strcmp("s3c-hsotg", (g)->name))
  51 #define gadget_is_s3c_hsudc(g)          (!strcmp("s3c-hsudc", (g)->name))
  52
  53 /**
  54  * usb_gadget_controller_number - support bcdDevice id convention
  55  * @gadget: the controller being driven
  56  *
  57  * Return a 2-digit BCD value associated with the peripheral controller,
  58  * suitable for use as part of a bcdDevice value, or a negative error code.
  59  *
  60  * NOTE:  this convention is purely optional, and has no meaning in terms of
  61  * any USB specification.  If you want to use a different convention in your
  62  * gadget driver firmware -- maybe a more formal revision ID -- feel free.
  63  *
  64  * Hosts see these bcdDevice numbers, and are allowed (but not encouraged!)
  65  * to change their behavior accordingly.  For example it might help avoiding
  66  * some chip bug.
  67  */
  68 static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
  69 {
  70         if (gadget_is_net2280(gadget))
  71                 return 0x01;
  72         else if (gadget_is_dummy(gadget))
  73                 return 0x02;
  74         else if (gadget_is_pxa(gadget))
  75                 return 0x03;
  76         else if (gadget_is_goku(gadget))
  77                 return 0x06;
  78         else if (gadget_is_omap(gadget))
  79                 return 0x08;
  80         else if (gadget_is_pxa27x(gadget))
  81                 return 0x11;
  82         else if (gadget_is_s3c2410(gadget))
  83                 return 0x12;
  84         else if (gadget_is_at91(gadget))
  85                 return 0x13;
  86         else if (gadget_is_imx(gadget))
  87                 return 0x14;
  88         else if (gadget_is_musbhdrc(gadget))
  89                 return 0x16;
  90         else if (gadget_is_atmel_usba(gadget))
  91                 return 0x18;
  92         else if (gadget_is_fsl_usb2(gadget))
  93                 return 0x19;
  94         else if (gadget_is_amd5536udc(gadget))
  95                 return 0x20;
  96         else if (gadget_is_m66592(gadget))
  97                 return 0x21;
  98         else if (gadget_is_fsl_qe(gadget))
  99                 return 0x22;
 100         else if (gadget_is_ci13xxx_pci(gadget))
 101                 return 0x23;
 102         else if (gadget_is_langwell(gadget))
 103                 return 0x24;
 104         else if (gadget_is_r8a66597(gadget))
 105                 return 0x25;
 106         else if (gadget_is_s3c_hsotg(gadget))
 107                 return 0x26;
 108         else if (gadget_is_pch(gadget))
 109                 return 0x27;
 110         else if (gadget_is_ci13xxx_msm(gadget))
 111                 return 0x28;
 112         else if (gadget_is_renesas_usbhs(gadget))
 113                 return 0x29;
 114         else if (gadget_is_s3c_hsudc(gadget))
 115                 return 0x30;
 116         else if (gadget_is_net2272(gadget))
 117                 return 0x31;
 118
 119         return -ENOENT;
 120 }
 121
 122
 123 /**
 124  * gadget_supports_altsettings - return true if altsettings work
 125  * @gadget: the gadget in question
 126  */
 127 static inline bool gadget_supports_altsettings(struct usb_gadget *gadget)
 128 {
 129         /* PXA 21x/25x/26x has no altsettings at all */
 130         if (gadget_is_pxa(gadget))
 131                 return false;
 132
 133         /* PXA 27x and 3xx have *broken* altsetting support */
 134         if (gadget_is_pxa27x(gadget))
 135                 return false;
 136
 137         /* Everything else is *presumably* fine ... */
 138         return true;
 139 }
 140
 141 #endif /* __GADGET_CHIPS_H */