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 #ifdef CONFIG_USB_GADGET_NET2280
  19 #define gadget_is_net2280(g)    !strcmp("net2280", (g)->name)
  20 #else
  21 #define gadget_is_net2280(g)    0
  22 #endif
  23
  24 #ifdef CONFIG_USB_GADGET_AMD5536UDC
  25 #define gadget_is_amd5536udc(g) !strcmp("amd5536udc", (g)->name)
  26 #else
  27 #define gadget_is_amd5536udc(g) 0
  28 #endif
  29
  30 #ifdef CONFIG_USB_GADGET_DUMMY_HCD
  31 #define gadget_is_dummy(g)      !strcmp("dummy_udc", (g)->name)
  32 #else
  33 #define gadget_is_dummy(g)      0
  34 #endif
  35
  36 #ifdef CONFIG_USB_GADGET_PXA25X
  37 #define gadget_is_pxa(g)        !strcmp("pxa25x_udc", (g)->name)
  38 #else
  39 #define gadget_is_pxa(g)        0
  40 #endif
  41
  42 #ifdef CONFIG_USB_GADGET_GOKU
  43 #define gadget_is_goku(g)       !strcmp("goku_udc", (g)->name)
  44 #else
  45 #define gadget_is_goku(g)       0
  46 #endif
  47
  48 /* SH3 UDC -- not yet ported 2.4 --> 2.6 */
  49 #ifdef CONFIG_USB_GADGET_SUPERH
  50 #define gadget_is_sh(g)         !strcmp("sh_udc", (g)->name)
  51 #else
  52 #define gadget_is_sh(g)         0
  53 #endif
  54
  55 /* not yet stable on 2.6 (would help "original Zaurus") */
  56 #ifdef CONFIG_USB_GADGET_SA1100
  57 #define gadget_is_sa1100(g)     !strcmp("sa1100_udc", (g)->name)
  58 #else
  59 #define gadget_is_sa1100(g)     0
  60 #endif
  61
  62 #ifdef CONFIG_USB_GADGET_LH7A40X
  63 #define gadget_is_lh7a40x(g)    !strcmp("lh7a40x_udc", (g)->name)
  64 #else
  65 #define gadget_is_lh7a40x(g)    0
  66 #endif
  67
  68 /* handhelds.org tree (?) */
  69 #ifdef CONFIG_USB_GADGET_MQ11XX
  70 #define gadget_is_mq11xx(g)     !strcmp("mq11xx_udc", (g)->name)
  71 #else
  72 #define gadget_is_mq11xx(g)     0
  73 #endif
  74
  75 #ifdef CONFIG_USB_GADGET_OMAP
  76 #define gadget_is_omap(g)       !strcmp("omap_udc", (g)->name)
  77 #else
  78 #define gadget_is_omap(g)       0
  79 #endif
  80
  81 /* not yet ported 2.4 --> 2.6 */
  82 #ifdef CONFIG_USB_GADGET_N9604
  83 #define gadget_is_n9604(g)      !strcmp("n9604_udc", (g)->name)
  84 #else
  85 #define gadget_is_n9604(g)      0
  86 #endif
  87
  88 /* various unstable versions available */
  89 #ifdef CONFIG_USB_GADGET_PXA27X
  90 #define gadget_is_pxa27x(g)     !strcmp("pxa27x_udc", (g)->name)
  91 #else
  92 #define gadget_is_pxa27x(g)     0
  93 #endif
  94
  95 #ifdef CONFIG_USB_GADGET_ATMEL_USBA
  96 #define gadget_is_atmel_usba(g) !strcmp("atmel_usba_udc", (g)->name)
  97 #else
  98 #define gadget_is_atmel_usba(g) 0
  99 #endif
 100
 101 #ifdef CONFIG_USB_GADGET_S3C2410
 102 #define gadget_is_s3c2410(g)    !strcmp("s3c2410_udc", (g)->name)
 103 #else
 104 #define gadget_is_s3c2410(g)    0
 105 #endif
 106
 107 #ifdef CONFIG_USB_GADGET_AT91
 108 #define gadget_is_at91(g)       !strcmp("at91_udc", (g)->name)
 109 #else
 110 #define gadget_is_at91(g)       0
 111 #endif
 112
 113 /* status unclear */
 114 #ifdef CONFIG_USB_GADGET_IMX
 115 #define gadget_is_imx(g)        !strcmp("imx_udc", (g)->name)
 116 #else
 117 #define gadget_is_imx(g)        0
 118 #endif
 119
 120 #ifdef CONFIG_USB_GADGET_FSL_USB2
 121 #define gadget_is_fsl_usb2(g)   !strcmp("fsl-usb2-udc", (g)->name)
 122 #else
 123 #define gadget_is_fsl_usb2(g)   0
 124 #endif
 125
 126 /* Mentor high speed function controller */
 127 /* from Montavista kernel (?) */
 128 #ifdef CONFIG_USB_GADGET_MUSBHSFC
 129 #define gadget_is_musbhsfc(g)   !strcmp("musbhsfc_udc", (g)->name)
 130 #else
 131 #define gadget_is_musbhsfc(g)   0
 132 #endif
 133
 134 /* Mentor high speed "dual role" controller, in peripheral role */
 135 #ifdef CONFIG_USB_GADGET_MUSB_HDRC
 136 #define gadget_is_musbhdrc(g)   !strcmp("musb_hdrc", (g)->name)
 137 #else
 138 #define gadget_is_musbhdrc(g)   0
 139 #endif
 140
 141 /* from Montavista kernel (?) */
 142 #ifdef CONFIG_USB_GADGET_MPC8272
 143 #define gadget_is_mpc8272(g)    !strcmp("mpc8272_udc", (g)->name)
 144 #else
 145 #define gadget_is_mpc8272(g)    0
 146 #endif
 147
 148 #ifdef CONFIG_USB_GADGET_M66592
 149 #define gadget_is_m66592(g)     !strcmp("m66592_udc", (g)->name)
 150 #else
 151 #define gadget_is_m66592(g)     0
 152 #endif
 153
 154
 155 // CONFIG_USB_GADGET_SX2
 156 // CONFIG_USB_GADGET_AU1X00
 157 // ...
 158
 159
 160 /**
 161  * usb_gadget_controller_number - support bcdDevice id convention
 162  * @gadget: the controller being driven
 163  *
 164  * Return a 2-digit BCD value associated with the peripheral controller,
 165  * suitable for use as part of a bcdDevice value, or a negative error code.
 166  *
 167  * NOTE:  this convention is purely optional, and has no meaning in terms of
 168  * any USB specification.  If you want to use a different convention in your
 169  * gadget driver firmware -- maybe a more formal revision ID -- feel free.
 170  *
 171  * Hosts see these bcdDevice numbers, and are allowed (but not encouraged!)
 172  * to change their behavior accordingly.  For example it might help avoiding
 173  * some chip bug.
 174  */
 175 static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
 176 {
 177         if (gadget_is_net2280(gadget))
 178                 return 0x01;
 179         else if (gadget_is_dummy(gadget))
 180                 return 0x02;
 181         else if (gadget_is_pxa(gadget))
 182                 return 0x03;
 183         else if (gadget_is_sh(gadget))
 184                 return 0x04;
 185         else if (gadget_is_sa1100(gadget))
 186                 return 0x05;
 187         else if (gadget_is_goku(gadget))
 188                 return 0x06;
 189         else if (gadget_is_mq11xx(gadget))
 190                 return 0x07;
 191         else if (gadget_is_omap(gadget))
 192                 return 0x08;
 193         else if (gadget_is_lh7a40x(gadget))
 194                 return 0x09;
 195         else if (gadget_is_n9604(gadget))
 196                 return 0x10;
 197         else if (gadget_is_pxa27x(gadget))
 198                 return 0x11;
 199         else if (gadget_is_s3c2410(gadget))
 200                 return 0x12;
 201         else if (gadget_is_at91(gadget))
 202                 return 0x13;
 203         else if (gadget_is_imx(gadget))
 204                 return 0x14;
 205         else if (gadget_is_musbhsfc(gadget))
 206                 return 0x15;
 207         else if (gadget_is_musbhdrc(gadget))
 208                 return 0x16;
 209         else if (gadget_is_mpc8272(gadget))
 210                 return 0x17;
 211         else if (gadget_is_atmel_usba(gadget))
 212                 return 0x18;
 213         else if (gadget_is_fsl_usb2(gadget))
 214                 return 0x19;
 215         else if (gadget_is_amd5536udc(gadget))
 216                 return 0x20;
 217         else if (gadget_is_m66592(gadget))
 218                 return 0x21;
 219         return -ENOENT;
 220 }
 221
 222
 223 /**
 224  * gadget_supports_altsettings - return true if altsettings work
 225  * @gadget: the gadget in question
 226  */
 227 static inline bool gadget_supports_altsettings(struct usb_gadget *gadget)
 228 {
 229         /* PXA 21x/25x/26x has no altsettings at all */
 230         if (gadget_is_pxa(gadget))
 231                 return false;
 232
 233         /* PXA 27x and 3xx have *broken* altsetting support */
 234         if (gadget_is_pxa27x(gadget))
 235                 return false;
 236
 237         /* SH3 hardware just doesn't do altsettings */
 238         if (gadget_is_sh(gadget))
 239                 return false;
 240
 241         /* Everything else is *presumably* fine ... */
 242         return true;
 243 }
 244
 245 #endif /* __GADGET_CHIPS_H */