91e79c91fa
This patch centralizes the assignment of bcdDevice numbers for different gadget controllers. This won't improve the object code at all, but it does save a lot of repetitive and error-prone source code ... and will simplify the work of supporting a new controller driver, since most new gadget drivers will no longer need patches (unless some hardware quirks limit USB protocol messaging). Added minor cleanups and identifer hooks for the UDC in the Freescale iMX series processors. Signed-off-by: Alan Stern <stern@rowland.harvard.edu> Signed-off-by: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
148 lines
3.8 KiB
C
148 lines
3.8 KiB
C
/*
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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 could 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 the runtime comparisons in typical one-choice cases.)
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*
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* NOTE: some of these controller drivers may not be available yet.
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*/
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#ifdef CONFIG_USB_GADGET_NET2280
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#define gadget_is_net2280(g) !strcmp("net2280", (g)->name)
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#else
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#define gadget_is_net2280(g) 0
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#endif
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#ifdef CONFIG_USB_GADGET_DUMMY_HCD
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#define gadget_is_dummy(g) !strcmp("dummy_udc", (g)->name)
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#else
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#define gadget_is_dummy(g) 0
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#endif
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#ifdef CONFIG_USB_GADGET_PXA2XX
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#define gadget_is_pxa(g) !strcmp("pxa2xx_udc", (g)->name)
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#else
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#define gadget_is_pxa(g) 0
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#endif
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#ifdef CONFIG_USB_GADGET_GOKU
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#define gadget_is_goku(g) !strcmp("goku_udc", (g)->name)
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#else
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#define gadget_is_goku(g) 0
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#endif
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#ifdef CONFIG_USB_GADGET_SUPERH
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#define gadget_is_sh(g) !strcmp("sh_udc", (g)->name)
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#else
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#define gadget_is_sh(g) 0
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#endif
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#ifdef CONFIG_USB_GADGET_SA1100
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#define gadget_is_sa1100(g) !strcmp("sa1100_udc", (g)->name)
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#else
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#define gadget_is_sa1100(g) 0
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#endif
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#ifdef CONFIG_USB_GADGET_LH7A40X
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#define gadget_is_lh7a40x(g) !strcmp("lh7a40x_udc", (g)->name)
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#else
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#define gadget_is_lh7a40x(g) 0
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#endif
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#ifdef CONFIG_USB_GADGET_MQ11XX
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#define gadget_is_mq11xx(g) !strcmp("mq11xx_udc", (g)->name)
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#else
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#define gadget_is_mq11xx(g) 0
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#endif
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#ifdef CONFIG_USB_GADGET_OMAP
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#define gadget_is_omap(g) !strcmp("omap_udc", (g)->name)
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#else
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#define gadget_is_omap(g) 0
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#endif
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#ifdef CONFIG_USB_GADGET_N9604
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#define gadget_is_n9604(g) !strcmp("n9604_udc", (g)->name)
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#else
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#define gadget_is_n9604(g) 0
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#endif
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#ifdef CONFIG_USB_GADGET_PXA27X
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#define gadget_is_pxa27x(g) !strcmp("pxa27x_udc", (g)->name)
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#else
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#define gadget_is_pxa27x(g) 0
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#endif
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#ifdef CONFIG_USB_GADGET_S3C2410
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#define gadget_is_s3c2410(g) !strcmp("s3c2410_udc", (g)->name)
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#else
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#define gadget_is_s3c2410(g) 0
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#endif
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#ifdef CONFIG_USB_GADGET_AT91
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#define gadget_is_at91(g) !strcmp("at91_udc", (g)->name)
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#else
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#define gadget_is_at91(g) 0
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#endif
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#ifdef CONFIG_USB_GADGET_IMX
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#define gadget_is_imx(g) !strcmp("imx_udc", (g)->name)
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#else
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#define gadget_is_imx(g) 0
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#endif
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// CONFIG_USB_GADGET_SX2
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// CONFIG_USB_GADGET_AU1X00
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// ...
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/**
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* usb_gadget_controller_number - support bcdDevice id convention
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* @gadget: the controller being driven
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*
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* Return a 2-digit BCD value associated with the peripheral controller,
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* suitable for use as part of a bcdDevice value, or a negative error code.
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*
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* NOTE: this convention is purely optional, and has no meaning in terms of
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* any USB specification. If you want to use a different convention in your
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* gadget driver firmware -- maybe a more formal revision ID -- feel free.
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*
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* Hosts see these bcdDevice numbers, and are allowed (but not encouraged!)
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* to change their behavior accordingly. For example it might help avoiding
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* some chip bug.
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*/
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static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
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{
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if (gadget_is_net2280(gadget))
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return 0x01;
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else if (gadget_is_dummy(gadget))
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return 0x02;
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else if (gadget_is_pxa(gadget))
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return 0x03;
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else if (gadget_is_sh(gadget))
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return 0x04;
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else if (gadget_is_sa1100(gadget))
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return 0x05;
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else if (gadget_is_goku(gadget))
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return 0x06;
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else if (gadget_is_mq11xx(gadget))
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return 0x07;
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else if (gadget_is_omap(gadget))
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return 0x08;
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else if (gadget_is_lh7a40x(gadget))
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return 0x09;
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else if (gadget_is_n9604(gadget))
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return 0x10;
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else if (gadget_is_pxa27x(gadget))
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return 0x11;
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else if (gadget_is_s3c2410(gadget))
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return 0x12;
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else if (gadget_is_at91(gadget))
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return 0x13;
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else if (gadget_is_imx(gadget))
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return 0x14;
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return -ENOENT;
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}
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