tjh.dev
Linux kernel mirror (for testing)
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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 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#ifdef CONFIG_USB_GADGET_NET2280
19#define gadget_is_net2280(g) !strcmp("net2280", (g)->name)
20#else
21#define gadget_is_net2280(g) 0
22#endif
23
24#ifdef CONFIG_USB_GADGET_AMD5536UDC
25#define gadget_is_amd5536udc(g) !strcmp("amd5536udc", (g)->name)
26#else
27#define gadget_is_amd5536udc(g) 0
28#endif
29
30#ifdef CONFIG_USB_GADGET_DUMMY_HCD
31#define gadget_is_dummy(g) !strcmp("dummy_udc", (g)->name)
32#else
33#define gadget_is_dummy(g) 0
34#endif
35
36#ifdef CONFIG_USB_GADGET_PXA25X
37#define gadget_is_pxa(g) !strcmp("pxa25x_udc", (g)->name)
38#else
39#define gadget_is_pxa(g) 0
40#endif
41
42#ifdef CONFIG_USB_GADGET_GOKU
43#define gadget_is_goku(g) !strcmp("goku_udc", (g)->name)
44#else
45#define gadget_is_goku(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_OMAP
55#define gadget_is_omap(g) !strcmp("omap_udc", (g)->name)
56#else
57#define gadget_is_omap(g) 0
58#endif
59
60/* various unstable versions available */
61#ifdef CONFIG_USB_GADGET_PXA27X
62#define gadget_is_pxa27x(g) !strcmp("pxa27x_udc", (g)->name)
63#else
64#define gadget_is_pxa27x(g) 0
65#endif
66
67#ifdef CONFIG_USB_GADGET_ATMEL_USBA
68#define gadget_is_atmel_usba(g) !strcmp("atmel_usba_udc", (g)->name)
69#else
70#define gadget_is_atmel_usba(g) 0
71#endif
72
73#ifdef CONFIG_USB_GADGET_S3C2410
74#define gadget_is_s3c2410(g) !strcmp("s3c2410_udc", (g)->name)
75#else
76#define gadget_is_s3c2410(g) 0
77#endif
78
79#ifdef CONFIG_USB_GADGET_AT91
80#define gadget_is_at91(g) !strcmp("at91_udc", (g)->name)
81#else
82#define gadget_is_at91(g) 0
83#endif
84
85#ifdef CONFIG_USB_GADGET_IMX
86#define gadget_is_imx(g) !strcmp("imx_udc", (g)->name)
87#else
88#define gadget_is_imx(g) 0
89#endif
90
91#ifdef CONFIG_USB_GADGET_FSL_USB2
92#define gadget_is_fsl_usb2(g) !strcmp("fsl-usb2-udc", (g)->name)
93#else
94#define gadget_is_fsl_usb2(g) 0
95#endif
96
97/* Mentor high speed "dual role" controller, in peripheral role */
98#ifdef CONFIG_USB_GADGET_MUSB_HDRC
99#define gadget_is_musbhdrc(g) !strcmp("musb_hdrc", (g)->name)
100#else
101#define gadget_is_musbhdrc(g) 0
102#endif
103
104#ifdef CONFIG_USB_GADGET_LANGWELL
105#define gadget_is_langwell(g) (!strcmp("langwell_udc", (g)->name))
106#else
107#define gadget_is_langwell(g) 0
108#endif
109
110#ifdef CONFIG_USB_GADGET_M66592
111#define gadget_is_m66592(g) !strcmp("m66592_udc", (g)->name)
112#else
113#define gadget_is_m66592(g) 0
114#endif
115
116/* Freescale CPM/QE UDC SUPPORT */
117#ifdef CONFIG_USB_GADGET_FSL_QE
118#define gadget_is_fsl_qe(g) !strcmp("fsl_qe_udc", (g)->name)
119#else
120#define gadget_is_fsl_qe(g) 0
121#endif
122
123#ifdef CONFIG_USB_GADGET_CI13XXX
124#define gadget_is_ci13xxx(g) (!strcmp("ci13xxx_udc", (g)->name))
125#else
126#define gadget_is_ci13xxx(g) 0
127#endif
128
129// CONFIG_USB_GADGET_SX2
130// CONFIG_USB_GADGET_AU1X00
131// ...
132
133#ifdef CONFIG_USB_GADGET_R8A66597
134#define gadget_is_r8a66597(g) !strcmp("r8a66597_udc", (g)->name)
135#else
136#define gadget_is_r8a66597(g) 0
137#endif
138
139#ifdef CONFIG_USB_S3C_HSOTG
140#define gadget_is_s3c_hsotg(g) (!strcmp("s3c-hsotg", (g)->name))
141#else
142#define gadget_is_s3c_hsotg(g) 0
143#endif
144
145
146/**
147 * usb_gadget_controller_number - support bcdDevice id convention
148 * @gadget: the controller being driven
149 *
150 * Return a 2-digit BCD value associated with the peripheral controller,
151 * suitable for use as part of a bcdDevice value, or a negative error code.
152 *
153 * NOTE: this convention is purely optional, and has no meaning in terms of
154 * any USB specification. If you want to use a different convention in your
155 * gadget driver firmware -- maybe a more formal revision ID -- feel free.
156 *
157 * Hosts see these bcdDevice numbers, and are allowed (but not encouraged!)
158 * to change their behavior accordingly. For example it might help avoiding
159 * some chip bug.
160 */
161static inline int usb_gadget_controller_number(struct usb_gadget *gadget)
162{
163 if (gadget_is_net2280(gadget))
164 return 0x01;
165 else if (gadget_is_dummy(gadget))
166 return 0x02;
167 else if (gadget_is_pxa(gadget))
168 return 0x03;
169 else if (gadget_is_goku(gadget))
170 return 0x06;
171 else if (gadget_is_omap(gadget))
172 return 0x08;
173 else if (gadget_is_lh7a40x(gadget))
174 return 0x09;
175 else if (gadget_is_pxa27x(gadget))
176 return 0x11;
177 else if (gadget_is_s3c2410(gadget))
178 return 0x12;
179 else if (gadget_is_at91(gadget))
180 return 0x13;
181 else if (gadget_is_imx(gadget))
182 return 0x14;
183 else if (gadget_is_musbhdrc(gadget))
184 return 0x16;
185 else if (gadget_is_atmel_usba(gadget))
186 return 0x18;
187 else if (gadget_is_fsl_usb2(gadget))
188 return 0x19;
189 else if (gadget_is_amd5536udc(gadget))
190 return 0x20;
191 else if (gadget_is_m66592(gadget))
192 return 0x21;
193 else if (gadget_is_fsl_qe(gadget))
194 return 0x22;
195 else if (gadget_is_ci13xxx(gadget))
196 return 0x23;
197 else if (gadget_is_langwell(gadget))
198 return 0x24;
199 else if (gadget_is_r8a66597(gadget))
200 return 0x25;
201 else if (gadget_is_s3c_hsotg(gadget))
202 return 0x26;
203 return -ENOENT;
204}
205
206
207/**
208 * gadget_supports_altsettings - return true if altsettings work
209 * @gadget: the gadget in question
210 */
211static inline bool gadget_supports_altsettings(struct usb_gadget *gadget)
212{
213 /* PXA 21x/25x/26x has no altsettings at all */
214 if (gadget_is_pxa(gadget))
215 return false;
216
217 /* PXA 27x and 3xx have *broken* altsetting support */
218 if (gadget_is_pxa27x(gadget))
219 return false;
220
221 /* Everything else is *presumably* fine ... */
222 return true;
223}
224
225#endif /* __GADGET_CHIPS_H */