gadget_chips.h
4.97 KB
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/*
* USB device controllers have lots of quirks. Use these macros in
* gadget drivers or other code that needs to deal with them, and which
* autoconfigures instead of using early binding to the hardware.
*
* This SHOULD eventually work like the ARM mach_is_*() stuff, driven by
* some config file that gets updated as new hardware is supported.
* (And avoiding all runtime comparisons in typical one-choice configs!)
*
* NOTE: some of these controller drivers may not be available yet.
* Some are available on 2.4 kernels; several are available, but not
* yet pushed in the 2.6 mainline tree.
*/
#ifndef __GADGET_CHIPS_H
#define __GADGET_CHIPS_H
/*
* NOTICE: the entries below are alphabetical and should be kept
* that way.
*
* Always be sure to add new entries to the correct position or
* accept the bashing later.
*
* If you have forgotten the alphabetical order let VIM/EMACS
* do that for you.
*/
#define gadget_is_amd5536udc(g) (!strcmp("amd5536udc", (g)->name))
#define gadget_is_at91(g) (!strcmp("at91_udc", (g)->name))
#define gadget_is_atmel_usba(g) (!strcmp("atmel_usba_udc", (g)->name))
#define gadget_is_ci13xxx_msm(g) (!strcmp("ci13xxx_msm", (g)->name))
#define gadget_is_ci13xxx_pci(g) (!strcmp("ci13xxx_pci", (g)->name))
#define gadget_is_dummy(g) (!strcmp("dummy_udc", (g)->name))
#define gadget_is_dwc3(g) (!strcmp("dwc3-gadget", (g)->name))
#define gadget_is_fsl_qe(g) (!strcmp("fsl_qe_udc", (g)->name))
#define gadget_is_fsl_usb2(g) (!strcmp("fsl-usb2-udc", (g)->name))
#define gadget_is_goku(g) (!strcmp("goku_udc", (g)->name))
#define gadget_is_imx(g) (!strcmp("imx_udc", (g)->name))
#define gadget_is_langwell(g) (!strcmp("langwell_udc", (g)->name))
#define gadget_is_m66592(g) (!strcmp("m66592_udc", (g)->name))
#define gadget_is_musbhdrc(g) (!strcmp("musb-hdrc", (g)->name))
#define gadget_is_net2272(g) (!strcmp("net2272", (g)->name))
#define gadget_is_net2280(g) (!strcmp("net2280", (g)->name))
#define gadget_is_omap(g) (!strcmp("omap_udc", (g)->name))
#define gadget_is_pch(g) (!strcmp("pch_udc", (g)->name))
#define gadget_is_pxa(g) (!strcmp("pxa25x_udc", (g)->name))
#define gadget_is_pxa27x(g) (!strcmp("pxa27x_udc", (g)->name))
#define gadget_is_r8a66597(g) (!strcmp("r8a66597_udc", (g)->name))
#define gadget_is_renesas_usbhs(g) (!strcmp("renesas_usbhs_udc", (g)->name))
#define gadget_is_s3c2410(g) (!strcmp("s3c2410_udc", (g)->name))
#define gadget_is_s3c_hsotg(g) (!strcmp("s3c-hsotg", (g)->name))
#define gadget_is_s3c_hsudc(g) (!strcmp("s3c-hsudc", (g)->name))
/**
* usb_gadget_controller_number - support bcdDevice id convention
* @gadget: the controller being driven
*
* Return a 2-digit BCD value associated with the peripheral controller,
* suitable for use as part of a bcdDevice value, or a negative error code.
*
* NOTE: this convention is purely optional, and has no meaning in terms of
* any USB specification. If you want to use a different convention in your
* gadget driver firmware -- maybe a more formal revision ID -- feel free.
*
* Hosts see these bcdDevice numbers, and are allowed (but not encouraged!)
* to change their behavior accordingly. For example it might help avoiding
* some chip bug.
*/
static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
{
if (gadget_is_net2280(gadget))
return 0x01;
else if (gadget_is_dummy(gadget))
return 0x02;
else if (gadget_is_pxa(gadget))
return 0x03;
else if (gadget_is_goku(gadget))
return 0x06;
else if (gadget_is_omap(gadget))
return 0x08;
else if (gadget_is_pxa27x(gadget))
return 0x11;
else if (gadget_is_s3c2410(gadget))
return 0x12;
else if (gadget_is_at91(gadget))
return 0x13;
else if (gadget_is_imx(gadget))
return 0x14;
else if (gadget_is_musbhdrc(gadget))
return 0x16;
else if (gadget_is_atmel_usba(gadget))
return 0x18;
else if (gadget_is_fsl_usb2(gadget))
return 0x19;
else if (gadget_is_amd5536udc(gadget))
return 0x20;
else if (gadget_is_m66592(gadget))
return 0x21;
else if (gadget_is_fsl_qe(gadget))
return 0x22;
else if (gadget_is_ci13xxx_pci(gadget))
return 0x23;
else if (gadget_is_langwell(gadget))
return 0x24;
else if (gadget_is_r8a66597(gadget))
return 0x25;
else if (gadget_is_s3c_hsotg(gadget))
return 0x26;
else if (gadget_is_pch(gadget))
return 0x27;
else if (gadget_is_ci13xxx_msm(gadget))
return 0x28;
else if (gadget_is_renesas_usbhs(gadget))
return 0x29;
else if (gadget_is_s3c_hsudc(gadget))
return 0x30;
else if (gadget_is_net2272(gadget))
return 0x31;
else if (gadget_is_dwc3(gadget))
return 0x32;
return -ENOENT;
}
/**
* gadget_supports_altsettings - return true if altsettings work
* @gadget: the gadget in question
*/
static inline bool gadget_supports_altsettings(struct usb_gadget *gadget)
{
/* PXA 21x/25x/26x has no altsettings at all */
if (gadget_is_pxa(gadget))
return false;
/* PXA 27x and 3xx have *broken* altsetting support */
if (gadget_is_pxa27x(gadget))
return false;
/* Everything else is *presumably* fine ... */
return true;
}
#endif /* __GADGET_CHIPS_H */