mirror of https://gitee.com/openkylin/linux.git
56 lines
1.8 KiB
C
56 lines
1.8 KiB
C
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/*
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* USB device controllers have lots of quirks. Use these macros in
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* gadget drivers or other code that needs to deal with them, and which
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* autoconfigures instead of using early binding to the hardware.
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*
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* This SHOULD eventually work like the ARM mach_is_*() stuff, driven by
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* some config file that gets updated as new hardware is supported.
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* (And avoiding all runtime comparisons in typical one-choice configs!)
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*
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* NOTE: some of these controller drivers may not be available yet.
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* Some are available on 2.4 kernels; several are available, but not
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* yet pushed in the 2.6 mainline tree.
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*/
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#ifndef __GADGET_CHIPS_H
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#define __GADGET_CHIPS_H
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#include <linux/usb/gadget.h>
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/*
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* NOTICE: the entries below are alphabetical and should be kept
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* that way.
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*
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* Always be sure to add new entries to the correct position or
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* accept the bashing later.
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*
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* If you have forgotten the alphabetical order let VIM/EMACS
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* do that for you.
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*/
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#define gadget_is_at91(g) (!strcmp("at91_udc", (g)->name))
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#define gadget_is_goku(g) (!strcmp("goku_udc", (g)->name))
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#define gadget_is_musbhdrc(g) (!strcmp("musb-hdrc", (g)->name))
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#define gadget_is_net2280(g) (!strcmp("net2280", (g)->name))
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#define gadget_is_pxa(g) (!strcmp("pxa25x_udc", (g)->name))
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#define gadget_is_pxa27x(g) (!strcmp("pxa27x_udc", (g)->name))
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/**
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* gadget_supports_altsettings - return true if altsettings work
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* @gadget: the gadget in question
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*/
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static inline bool gadget_supports_altsettings(struct usb_gadget *gadget)
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{
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/* PXA 21x/25x/26x has no altsettings at all */
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if (gadget_is_pxa(gadget))
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return false;
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/* PXA 27x and 3xx have *broken* altsetting support */
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if (gadget_is_pxa27x(gadget))
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return false;
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/* Everything else is *presumably* fine ... */
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return true;
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}
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#endif /* __GADGET_CHIPS_H */
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