tjh.dev
Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
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 could 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 the runtime comparisons in typical one-choice cases.)
9 *
10 * NOTE: some of these controller drivers may not be available yet.
11 */
12#ifdef CONFIG_USB_GADGET_NET2280
13#define gadget_is_net2280(g) !strcmp("net2280", (g)->name)
14#else
15#define gadget_is_net2280(g) 0
16#endif
17
18#ifdef CONFIG_USB_GADGET_DUMMY_HCD
19#define gadget_is_dummy(g) !strcmp("dummy_udc", (g)->name)
20#else
21#define gadget_is_dummy(g) 0
22#endif
23
24#ifdef CONFIG_USB_GADGET_PXA2XX
25#define gadget_is_pxa(g) !strcmp("pxa2xx_udc", (g)->name)
26#else
27#define gadget_is_pxa(g) 0
28#endif
29
30#ifdef CONFIG_USB_GADGET_GOKU
31#define gadget_is_goku(g) !strcmp("goku_udc", (g)->name)
32#else
33#define gadget_is_goku(g) 0
34#endif
35
36#ifdef CONFIG_USB_GADGET_SUPERH
37#define gadget_is_sh(g) !strcmp("sh_udc", (g)->name)
38#else
39#define gadget_is_sh(g) 0
40#endif
41
42#ifdef CONFIG_USB_GADGET_SA1100
43#define gadget_is_sa1100(g) !strcmp("sa1100_udc", (g)->name)
44#else
45#define gadget_is_sa1100(g) 0
46#endif
47
48#ifdef CONFIG_USB_GADGET_LH7A40X
49#define gadget_is_lh7a40x(g) !strcmp("lh7a40x_udc", (g)->name)
50#else
51#define gadget_is_lh7a40x(g) 0
52#endif
53
54#ifdef CONFIG_USB_GADGET_MQ11XX
55#define gadget_is_mq11xx(g) !strcmp("mq11xx_udc", (g)->name)
56#else
57#define gadget_is_mq11xx(g) 0
58#endif
59
60#ifdef CONFIG_USB_GADGET_OMAP
61#define gadget_is_omap(g) !strcmp("omap_udc", (g)->name)
62#else
63#define gadget_is_omap(g) 0
64#endif
65
66#ifdef CONFIG_USB_GADGET_N9604
67#define gadget_is_n9604(g) !strcmp("n9604_udc", (g)->name)
68#else
69#define gadget_is_n9604(g) 0
70#endif
71
72#ifdef CONFIG_USB_GADGET_PXA27X
73#define gadget_is_pxa27x(g) !strcmp("pxa27x_udc", (g)->name)
74#else
75#define gadget_is_pxa27x(g) 0
76#endif
77
78#ifdef CONFIG_USB_GADGET_S3C2410
79#define gadget_is_s3c2410(g) !strcmp("s3c2410_udc", (g)->name)
80#else
81#define gadget_is_s3c2410(g) 0
82#endif
83
84#ifdef CONFIG_USB_GADGET_AT91
85#define gadget_is_at91(g) !strcmp("at91_udc", (g)->name)
86#else
87#define gadget_is_at91(g) 0
88#endif
89
90#ifdef CONFIG_USB_GADGET_IMX
91#define gadget_is_imx(g) !strcmp("imx_udc", (g)->name)
92#else
93#define gadget_is_imx(g) 0
94#endif
95
96// CONFIG_USB_GADGET_SX2
97// CONFIG_USB_GADGET_AU1X00
98// ...
99
100
101/**
102 * usb_gadget_controller_number - support bcdDevice id convention
103 * @gadget: the controller being driven
104 *
105 * Return a 2-digit BCD value associated with the peripheral controller,
106 * suitable for use as part of a bcdDevice value, or a negative error code.
107 *
108 * NOTE: this convention is purely optional, and has no meaning in terms of
109 * any USB specification. If you want to use a different convention in your
110 * gadget driver firmware -- maybe a more formal revision ID -- feel free.
111 *
112 * Hosts see these bcdDevice numbers, and are allowed (but not encouraged!)
113 * to change their behavior accordingly. For example it might help avoiding
114 * some chip bug.
115 */
116static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
117{
118 if (gadget_is_net2280(gadget))
119 return 0x01;
120 else if (gadget_is_dummy(gadget))
121 return 0x02;
122 else if (gadget_is_pxa(gadget))
123 return 0x03;
124 else if (gadget_is_sh(gadget))
125 return 0x04;
126 else if (gadget_is_sa1100(gadget))
127 return 0x05;
128 else if (gadget_is_goku(gadget))
129 return 0x06;
130 else if (gadget_is_mq11xx(gadget))
131 return 0x07;
132 else if (gadget_is_omap(gadget))
133 return 0x08;
134 else if (gadget_is_lh7a40x(gadget))
135 return 0x09;
136 else if (gadget_is_n9604(gadget))
137 return 0x10;
138 else if (gadget_is_pxa27x(gadget))
139 return 0x11;
140 else if (gadget_is_s3c2410(gadget))
141 return 0x12;
142 else if (gadget_is_at91(gadget))
143 return 0x13;
144 else if (gadget_is_imx(gadget))
145 return 0x14;
146 return -ENOENT;
147}