| b.liu | e958203 | 2025-04-17 19:18:16 +0800 | [diff] [blame^] | 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 | */ |
| 41 | static 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 */ |