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/*
 19 * NOTICE: the entries below are alphabetical and should be kept
 20 * that way.
 21 *
 22 * Always be sure to add new entries to the correct position or
 23 * accept the bashing later.
 24 *
 25 * If you have forgotten the alphabetical order let VIM/EMACS
 26 * do that for you.
 27 */
 28#define gadget_is_amd5536udc(g)		(!strcmp("amd5536udc", (g)->name))
 29#define gadget_is_at91(g)		(!strcmp("at91_udc", (g)->name))
 30#define gadget_is_atmel_usba(g)		(!strcmp("atmel_usba_udc", (g)->name))
 31#define gadget_is_ci13xxx_msm(g)	(!strcmp("ci13xxx_msm", (g)->name))
 32#define gadget_is_ci13xxx_pci(g)	(!strcmp("ci13xxx_pci", (g)->name))
 33#define gadget_is_dummy(g)		(!strcmp("dummy_udc", (g)->name))
 34#define gadget_is_fsl_qe(g)		(!strcmp("fsl_qe_udc", (g)->name))
 35#define gadget_is_fsl_usb2(g)		(!strcmp("fsl-usb2-udc", (g)->name))
 36#define gadget_is_goku(g)		(!strcmp("goku_udc", (g)->name))
 37#define gadget_is_imx(g)		(!strcmp("imx_udc", (g)->name))
 38#define gadget_is_langwell(g)		(!strcmp("langwell_udc", (g)->name))
 39#define gadget_is_m66592(g)		(!strcmp("m66592_udc", (g)->name))
 40#define gadget_is_musbhdrc(g)		(!strcmp("musb-hdrc", (g)->name))
 41#define gadget_is_net2272(g)		(!strcmp("net2272", (g)->name))
 42#define gadget_is_net2280(g)		(!strcmp("net2280", (g)->name))
 43#define gadget_is_omap(g)		(!strcmp("omap_udc", (g)->name))
 44#define gadget_is_pch(g)		(!strcmp("pch_udc", (g)->name))
 45#define gadget_is_pxa(g)		(!strcmp("pxa25x_udc", (g)->name))
 46#define gadget_is_pxa27x(g)		(!strcmp("pxa27x_udc", (g)->name))
 47#define gadget_is_r8a66597(g)		(!strcmp("r8a66597_udc", (g)->name))
 48#define gadget_is_renesas_usbhs(g)	(!strcmp("renesas_usbhs_udc", (g)->name))
 49#define gadget_is_s3c2410(g)		(!strcmp("s3c2410_udc", (g)->name))
 50#define gadget_is_s3c_hsotg(g)		(!strcmp("s3c-hsotg", (g)->name))
 51#define gadget_is_s3c_hsudc(g)		(!strcmp("s3c-hsudc", (g)->name))
 52
 53/**
 54 * usb_gadget_controller_number - support bcdDevice id convention
 55 * @gadget: the controller being driven
 56 *
 57 * Return a 2-digit BCD value associated with the peripheral controller,
 58 * suitable for use as part of a bcdDevice value, or a negative error code.
 59 *
 60 * NOTE:  this convention is purely optional, and has no meaning in terms of
 61 * any USB specification.  If you want to use a different convention in your
 62 * gadget driver firmware -- maybe a more formal revision ID -- feel free.
 63 *
 64 * Hosts see these bcdDevice numbers, and are allowed (but not encouraged!)
 65 * to change their behavior accordingly.  For example it might help avoiding
 66 * some chip bug.
 67 */
 68static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
 69{
 70	if (gadget_is_net2280(gadget))
 71		return 0x01;
 72	else if (gadget_is_dummy(gadget))
 73		return 0x02;
 74	else if (gadget_is_pxa(gadget))
 75		return 0x03;
 76	else if (gadget_is_goku(gadget))
 77		return 0x06;
 78	else if (gadget_is_omap(gadget))
 79		return 0x08;
 80	else if (gadget_is_pxa27x(gadget))
 81		return 0x11;
 82	else if (gadget_is_s3c2410(gadget))
 83		return 0x12;
 84	else if (gadget_is_at91(gadget))
 85		return 0x13;
 86	else if (gadget_is_imx(gadget))
 87		return 0x14;
 88	else if (gadget_is_musbhdrc(gadget))
 89		return 0x16;
 90	else if (gadget_is_atmel_usba(gadget))
 91		return 0x18;
 92	else if (gadget_is_fsl_usb2(gadget))
 93		return 0x19;
 94	else if (gadget_is_amd5536udc(gadget))
 95		return 0x20;
 96	else if (gadget_is_m66592(gadget))
 97		return 0x21;
 98	else if (gadget_is_fsl_qe(gadget))
 99		return 0x22;
100	else if (gadget_is_ci13xxx_pci(gadget))
101		return 0x23;
102	else if (gadget_is_langwell(gadget))
103		return 0x24;
104	else if (gadget_is_r8a66597(gadget))
105		return 0x25;
106	else if (gadget_is_s3c_hsotg(gadget))
107		return 0x26;
108	else if (gadget_is_pch(gadget))
109		return 0x27;
110	else if (gadget_is_ci13xxx_msm(gadget))
111		return 0x28;
112	else if (gadget_is_renesas_usbhs(gadget))
113		return 0x29;
114	else if (gadget_is_s3c_hsudc(gadget))
115		return 0x30;
116	else if (gadget_is_net2272(gadget))
117		return 0x31;
118
119	return -ENOENT;
120}
121
122
123/**
124 * gadget_supports_altsettings - return true if altsettings work
125 * @gadget: the gadget in question
126 */
127static inline bool gadget_supports_altsettings(struct usb_gadget *gadget)
128{
129	/* PXA 21x/25x/26x has no altsettings at all */
130	if (gadget_is_pxa(gadget))
131		return false;
132
133	/* PXA 27x and 3xx have *broken* altsetting support */
134	if (gadget_is_pxa27x(gadget))
135		return false;
136
137	/* Everything else is *presumably* fine ... */
138	return true;
139}
140
141#endif /* __GADGET_CHIPS_H */