Root/drivers/usb/gadget/gadget_chips.h

Source at commit eb7e867e25b365fc7e5214607b58c3c800bc93f7 created 10 years 3 months ago.
By Lars-Peter Clausen, Add jz4740 udc driver
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_dwc3(g) (!strcmp("dwc3-gadget", (g)->name))
35#define gadget_is_fsl_qe(g) (!strcmp("fsl_qe_udc", (g)->name))
36#define gadget_is_fsl_usb2(g) (!strcmp("fsl-usb2-udc", (g)->name))
37#define gadget_is_goku(g) (!strcmp("goku_udc", (g)->name))
38#define gadget_is_imx(g) (!strcmp("imx_udc", (g)->name))
39#define gadget_is_jz4740(g) (!strcmp("ingenic_hsusb", (g)->name))
40#define gadget_is_langwell(g) (!strcmp("langwell_udc", (g)->name))
41#define gadget_is_lpc32xx(g) (!strcmp("lpc32xx_udc", (g)->name))
42#define gadget_is_m66592(g) (!strcmp("m66592_udc", (g)->name))
43#define gadget_is_musbhdrc(g) (!strcmp("musb-hdrc", (g)->name))
44#define gadget_is_net2272(g) (!strcmp("net2272", (g)->name))
45#define gadget_is_net2280(g) (!strcmp("net2280", (g)->name))
46#define gadget_is_omap(g) (!strcmp("omap_udc", (g)->name))
47#define gadget_is_pch(g) (!strcmp("pch_udc", (g)->name))
48#define gadget_is_pxa(g) (!strcmp("pxa25x_udc", (g)->name))
49#define gadget_is_pxa27x(g) (!strcmp("pxa27x_udc", (g)->name))
50#define gadget_is_r8a66597(g) (!strcmp("r8a66597_udc", (g)->name))
51#define gadget_is_renesas_usbhs(g) (!strcmp("renesas_usbhs_udc", (g)->name))
52#define gadget_is_s3c2410(g) (!strcmp("s3c2410_udc", (g)->name))
53#define gadget_is_s3c_hsotg(g) (!strcmp("s3c-hsotg", (g)->name))
54#define gadget_is_s3c_hsudc(g) (!strcmp("s3c-hsudc", (g)->name))
55
56/**
57 * usb_gadget_controller_number - support bcdDevice id convention
58 * @gadget: the controller being driven
59 *
60 * Return a 2-digit BCD value associated with the peripheral controller,
61 * suitable for use as part of a bcdDevice value, or a negative error code.
62 *
63 * NOTE: this convention is purely optional, and has no meaning in terms of
64 * any USB specification. If you want to use a different convention in your
65 * gadget driver firmware -- maybe a more formal revision ID -- feel free.
66 *
67 * Hosts see these bcdDevice numbers, and are allowed (but not encouraged!)
68 * to change their behavior accordingly. For example it might help avoiding
69 * some chip bug.
70 */
71static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
72{
73    if (gadget_is_net2280(gadget))
74        return 0x01;
75    else if (gadget_is_dummy(gadget))
76        return 0x02;
77    else if (gadget_is_pxa(gadget))
78        return 0x03;
79    else if (gadget_is_goku(gadget))
80        return 0x06;
81    else if (gadget_is_omap(gadget))
82        return 0x08;
83    else if (gadget_is_pxa27x(gadget))
84        return 0x11;
85    else if (gadget_is_s3c2410(gadget))
86        return 0x12;
87    else if (gadget_is_at91(gadget))
88        return 0x13;
89    else if (gadget_is_imx(gadget))
90        return 0x14;
91    else if (gadget_is_musbhdrc(gadget))
92        return 0x16;
93    else if (gadget_is_atmel_usba(gadget))
94        return 0x18;
95    else if (gadget_is_fsl_usb2(gadget))
96        return 0x19;
97    else if (gadget_is_amd5536udc(gadget))
98        return 0x20;
99    else if (gadget_is_m66592(gadget))
100        return 0x21;
101    else if (gadget_is_fsl_qe(gadget))
102        return 0x22;
103    else if (gadget_is_ci13xxx_pci(gadget))
104        return 0x23;
105    else if (gadget_is_langwell(gadget))
106        return 0x24;
107    else if (gadget_is_r8a66597(gadget))
108        return 0x25;
109    else if (gadget_is_s3c_hsotg(gadget))
110        return 0x26;
111    else if (gadget_is_pch(gadget))
112        return 0x27;
113    else if (gadget_is_ci13xxx_msm(gadget))
114        return 0x28;
115    else if (gadget_is_renesas_usbhs(gadget))
116        return 0x29;
117    else if (gadget_is_s3c_hsudc(gadget))
118        return 0x30;
119    else if (gadget_is_net2272(gadget))
120        return 0x31;
121    else if (gadget_is_dwc3(gadget))
122        return 0x32;
123    else if (gadget_is_lpc32xx(gadget))
124        return 0x33;
125    else if (gadget_is_jz4740(gadget))
126        return 0x34;
127
128    return -ENOENT;
129}
130
131
132/**
133 * gadget_supports_altsettings - return true if altsettings work
134 * @gadget: the gadget in question
135 */
136static inline bool gadget_supports_altsettings(struct usb_gadget *gadget)
137{
138    /* PXA 21x/25x/26x has no altsettings at all */
139    if (gadget_is_pxa(gadget))
140        return false;
141
142    /* PXA 27x and 3xx have *broken* altsetting support */
143    if (gadget_is_pxa27x(gadget))
144        return false;
145
146    /* Everything else is *presumably* fine ... */
147    return true;
148}
149
150#endif /* __GADGET_CHIPS_H */
151

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