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_dwc3(g) (!strcmp("dwc3-gadget", (g)->name)) 35#define gadget_is_fsl_qe(g) (!strcmp("fsl_qe_udc", (g)->name)) 36#define gadget_is_fsl_usb2(g) (!strcmp("fsl-usb2-udc", (g)->name)) 37#define gadget_is_goku(g) (!strcmp("goku_udc", (g)->name)) 38#define gadget_is_imx(g) (!strcmp("imx_udc", (g)->name)) 39#define gadget_is_langwell(g) (!strcmp("langwell_udc", (g)->name)) 40#define gadget_is_m66592(g) (!strcmp("m66592_udc", (g)->name)) 41#define gadget_is_musbhdrc(g) (!strcmp("musb-hdrc", (g)->name)) 42#define gadget_is_net2272(g) (!strcmp("net2272", (g)->name)) 43#define gadget_is_net2280(g) (!strcmp("net2280", (g)->name)) 44#define gadget_is_omap(g) (!strcmp("omap_udc", (g)->name)) 45#define gadget_is_pch(g) (!strcmp("pch_udc", (g)->name)) 46#define gadget_is_pxa(g) (!strcmp("pxa25x_udc", (g)->name)) 47#define gadget_is_pxa27x(g) (!strcmp("pxa27x_udc", (g)->name)) 48#define gadget_is_r8a66597(g) (!strcmp("r8a66597_udc", (g)->name)) 49#define gadget_is_renesas_usbhs(g) (!strcmp("renesas_usbhs_udc", (g)->name)) 50#define gadget_is_s3c2410(g) (!strcmp("s3c2410_udc", (g)->name)) 51#define gadget_is_s3c_hsotg(g) (!strcmp("s3c-hsotg", (g)->name)) 52#define gadget_is_s3c_hsudc(g) (!strcmp("s3c-hsudc", (g)->name)) 53 54/** 55 * usb_gadget_controller_number - support bcdDevice id convention 56 * @gadget: the controller being driven 57 * 58 * Return a 2-digit BCD value associated with the peripheral controller, 59 * suitable for use as part of a bcdDevice value, or a negative error code. 60 * 61 * NOTE: this convention is purely optional, and has no meaning in terms of 62 * any USB specification. If you want to use a different convention in your 63 * gadget driver firmware -- maybe a more formal revision ID -- feel free. 64 * 65 * Hosts see these bcdDevice numbers, and are allowed (but not encouraged!) 66 * to change their behavior accordingly. For example it might help avoiding 67 * some chip bug. 68 */ 69static inline int usb_gadget_controller_number(struct usb_gadget *gadget) 70{ 71 if (gadget_is_net2280(gadget)) 72 return 0x01; 73 else if (gadget_is_dummy(gadget)) 74 return 0x02; 75 else if (gadget_is_pxa(gadget)) 76 return 0x03; 77 else if (gadget_is_goku(gadget)) 78 return 0x06; 79 else if (gadget_is_omap(gadget)) 80 return 0x08; 81 else if (gadget_is_pxa27x(gadget)) 82 return 0x11; 83 else if (gadget_is_s3c2410(gadget)) 84 return 0x12; 85 else if (gadget_is_at91(gadget)) 86 return 0x13; 87 else if (gadget_is_imx(gadget)) 88 return 0x14; 89 else if (gadget_is_musbhdrc(gadget)) 90 return 0x16; 91 else if (gadget_is_atmel_usba(gadget)) 92 return 0x18; 93 else if (gadget_is_fsl_usb2(gadget)) 94 return 0x19; 95 else if (gadget_is_amd5536udc(gadget)) 96 return 0x20; 97 else if (gadget_is_m66592(gadget)) 98 return 0x21; 99 else if (gadget_is_fsl_qe(gadget)) 100 return 0x22; 101 else if (gadget_is_ci13xxx_pci(gadget)) 102 return 0x23; 103 else if (gadget_is_langwell(gadget)) 104 return 0x24; 105 else if (gadget_is_r8a66597(gadget)) 106 return 0x25; 107 else if (gadget_is_s3c_hsotg(gadget)) 108 return 0x26; 109 else if (gadget_is_pch(gadget)) 110 return 0x27; 111 else if (gadget_is_ci13xxx_msm(gadget)) 112 return 0x28; 113 else if (gadget_is_renesas_usbhs(gadget)) 114 return 0x29; 115 else if (gadget_is_s3c_hsudc(gadget)) 116 return 0x30; 117 else if (gadget_is_net2272(gadget)) 118 return 0x31; 119 else if (gadget_is_dwc3(gadget)) 120 return 0x32; 121 122 return -ENOENT; 123} 124 125 126/** 127 * gadget_supports_altsettings - return true if altsettings work 128 * @gadget: the gadget in question 129 */ 130static inline bool gadget_supports_altsettings(struct usb_gadget *gadget) 131{ 132 /* PXA 21x/25x/26x has no altsettings at all */ 133 if (gadget_is_pxa(gadget)) 134 return false; 135 136 /* PXA 27x and 3xx have *broken* altsetting support */ 137 if (gadget_is_pxa27x(gadget)) 138 return false; 139 140 /* Everything else is *presumably* fine ... */ 141 return true; 142} 143 144#endif /* __GADGET_CHIPS_H */ 145