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24a28e4283
This patch adds a USB gadget driver for the LPC32xx ARM SoC. Signed-off-by: Roland Stigge <stigge@antcom.de> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
148 lines
5.1 KiB
C
148 lines
5.1 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 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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/*
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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_amd5536udc(g) (!strcmp("amd5536udc", (g)->name))
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#define gadget_is_at91(g) (!strcmp("at91_udc", (g)->name))
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#define gadget_is_atmel_usba(g) (!strcmp("atmel_usba_udc", (g)->name))
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#define gadget_is_ci13xxx_msm(g) (!strcmp("ci13xxx_msm", (g)->name))
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#define gadget_is_ci13xxx_pci(g) (!strcmp("ci13xxx_pci", (g)->name))
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#define gadget_is_dummy(g) (!strcmp("dummy_udc", (g)->name))
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#define gadget_is_dwc3(g) (!strcmp("dwc3-gadget", (g)->name))
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#define gadget_is_fsl_qe(g) (!strcmp("fsl_qe_udc", (g)->name))
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#define gadget_is_fsl_usb2(g) (!strcmp("fsl-usb2-udc", (g)->name))
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#define gadget_is_goku(g) (!strcmp("goku_udc", (g)->name))
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#define gadget_is_imx(g) (!strcmp("imx_udc", (g)->name))
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#define gadget_is_langwell(g) (!strcmp("langwell_udc", (g)->name))
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#define gadget_is_lpc32xx(g) (!strcmp("lpc32xx_udc", (g)->name))
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#define gadget_is_m66592(g) (!strcmp("m66592_udc", (g)->name))
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#define gadget_is_musbhdrc(g) (!strcmp("musb-hdrc", (g)->name))
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#define gadget_is_net2272(g) (!strcmp("net2272", (g)->name))
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#define gadget_is_net2280(g) (!strcmp("net2280", (g)->name))
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#define gadget_is_omap(g) (!strcmp("omap_udc", (g)->name))
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#define gadget_is_pch(g) (!strcmp("pch_udc", (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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#define gadget_is_r8a66597(g) (!strcmp("r8a66597_udc", (g)->name))
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#define gadget_is_renesas_usbhs(g) (!strcmp("renesas_usbhs_udc", (g)->name))
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#define gadget_is_s3c2410(g) (!strcmp("s3c2410_udc", (g)->name))
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#define gadget_is_s3c_hsotg(g) (!strcmp("s3c-hsotg", (g)->name))
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#define gadget_is_s3c_hsudc(g) (!strcmp("s3c-hsudc", (g)->name))
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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_goku(gadget))
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return 0x06;
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else if (gadget_is_omap(gadget))
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return 0x08;
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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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else if (gadget_is_musbhdrc(gadget))
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return 0x16;
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else if (gadget_is_atmel_usba(gadget))
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return 0x18;
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else if (gadget_is_fsl_usb2(gadget))
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return 0x19;
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else if (gadget_is_amd5536udc(gadget))
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return 0x20;
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else if (gadget_is_m66592(gadget))
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return 0x21;
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else if (gadget_is_fsl_qe(gadget))
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return 0x22;
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else if (gadget_is_ci13xxx_pci(gadget))
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return 0x23;
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else if (gadget_is_langwell(gadget))
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return 0x24;
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else if (gadget_is_r8a66597(gadget))
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return 0x25;
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else if (gadget_is_s3c_hsotg(gadget))
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return 0x26;
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else if (gadget_is_pch(gadget))
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return 0x27;
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else if (gadget_is_ci13xxx_msm(gadget))
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return 0x28;
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else if (gadget_is_renesas_usbhs(gadget))
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return 0x29;
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else if (gadget_is_s3c_hsudc(gadget))
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return 0x30;
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else if (gadget_is_net2272(gadget))
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return 0x31;
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else if (gadget_is_dwc3(gadget))
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return 0x32;
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else if (gadget_is_lpc32xx(gadget))
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return 0x33;
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return -ENOENT;
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}
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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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