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[/] [test_project/] [trunk/] [linux_sd_driver/] [include/] [linux/] [usb/] [ch9.h] - Blame information for rev 81

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1 62 marcus.erl
/*
2
 * This file holds USB constants and structures that are needed for
3
 * USB device APIs.  These are used by the USB device model, which is
4
 * defined in chapter 9 of the USB 2.0 specification and in the
5
 * Wireless USB 1.0 (spread around).  Linux has several APIs in C that
6
 * need these:
7
 *
8
 * - the master/host side Linux-USB kernel driver API;
9
 * - the "usbfs" user space API; and
10
 * - the Linux "gadget" slave/device/peripheral side driver API.
11
 *
12
 * USB 2.0 adds an additional "On The Go" (OTG) mode, which lets systems
13
 * act either as a USB master/host or as a USB slave/device.  That means
14
 * the master and slave side APIs benefit from working well together.
15
 *
16
 * There's also "Wireless USB", using low power short range radios for
17
 * peripheral interconnection but otherwise building on the USB framework.
18
 *
19
 * Note all descriptors are declared '__attribute__((packed))' so that:
20
 *
21
 * [a] they never get padded, either internally (USB spec writers
22
 *     probably handled that) or externally;
23
 *
24
 * [b] so that accessing bigger-than-a-bytes fields will never
25
 *     generate bus errors on any platform, even when the location of
26
 *     its descriptor inside a bundle isn't "naturally aligned", and
27
 *
28
 * [c] for consistency, removing all doubt even when it appears to
29
 *     someone that the two other points are non-issues for that
30
 *     particular descriptor type.
31
 */
32
 
33
#ifndef __LINUX_USB_CH9_H
34
#define __LINUX_USB_CH9_H
35
 
36
#include <linux/types.h>        /* __u8 etc */
37
 
38
/*-------------------------------------------------------------------------*/
39
 
40
/* CONTROL REQUEST SUPPORT */
41
 
42
/*
43
 * USB directions
44
 *
45
 * This bit flag is used in endpoint descriptors' bEndpointAddress field.
46
 * It's also one of three fields in control requests bRequestType.
47
 */
48
#define USB_DIR_OUT                     0                /* to device */
49
#define USB_DIR_IN                      0x80            /* to host */
50
 
51
/*
52
 * USB types, the second of three bRequestType fields
53
 */
54
#define USB_TYPE_MASK                   (0x03 << 5)
55
#define USB_TYPE_STANDARD               (0x00 << 5)
56
#define USB_TYPE_CLASS                  (0x01 << 5)
57
#define USB_TYPE_VENDOR                 (0x02 << 5)
58
#define USB_TYPE_RESERVED               (0x03 << 5)
59
 
60
/*
61
 * USB recipients, the third of three bRequestType fields
62
 */
63
#define USB_RECIP_MASK                  0x1f
64
#define USB_RECIP_DEVICE                0x00
65
#define USB_RECIP_INTERFACE             0x01
66
#define USB_RECIP_ENDPOINT              0x02
67
#define USB_RECIP_OTHER                 0x03
68
/* From Wireless USB 1.0 */
69
#define USB_RECIP_PORT                  0x04
70
#define USB_RECIP_RPIPE                 0x05
71
 
72
/*
73
 * Standard requests, for the bRequest field of a SETUP packet.
74
 *
75
 * These are qualified by the bRequestType field, so that for example
76
 * TYPE_CLASS or TYPE_VENDOR specific feature flags could be retrieved
77
 * by a GET_STATUS request.
78
 */
79
#define USB_REQ_GET_STATUS              0x00
80
#define USB_REQ_CLEAR_FEATURE           0x01
81
#define USB_REQ_SET_FEATURE             0x03
82
#define USB_REQ_SET_ADDRESS             0x05
83
#define USB_REQ_GET_DESCRIPTOR          0x06
84
#define USB_REQ_SET_DESCRIPTOR          0x07
85
#define USB_REQ_GET_CONFIGURATION       0x08
86
#define USB_REQ_SET_CONFIGURATION       0x09
87
#define USB_REQ_GET_INTERFACE           0x0A
88
#define USB_REQ_SET_INTERFACE           0x0B
89
#define USB_REQ_SYNCH_FRAME             0x0C
90
 
91
#define USB_REQ_SET_ENCRYPTION          0x0D    /* Wireless USB */
92
#define USB_REQ_GET_ENCRYPTION          0x0E
93
#define USB_REQ_RPIPE_ABORT             0x0E
94
#define USB_REQ_SET_HANDSHAKE           0x0F
95
#define USB_REQ_RPIPE_RESET             0x0F
96
#define USB_REQ_GET_HANDSHAKE           0x10
97
#define USB_REQ_SET_CONNECTION          0x11
98
#define USB_REQ_SET_SECURITY_DATA       0x12
99
#define USB_REQ_GET_SECURITY_DATA       0x13
100
#define USB_REQ_SET_WUSB_DATA           0x14
101
#define USB_REQ_LOOPBACK_DATA_WRITE     0x15
102
#define USB_REQ_LOOPBACK_DATA_READ      0x16
103
#define USB_REQ_SET_INTERFACE_DS        0x17
104
 
105
/*
106
 * USB feature flags are written using USB_REQ_{CLEAR,SET}_FEATURE, and
107
 * are read as a bit array returned by USB_REQ_GET_STATUS.  (So there
108
 * are at most sixteen features of each type.)
109
 */
110
#define USB_DEVICE_SELF_POWERED         0        /* (read only) */
111
#define USB_DEVICE_REMOTE_WAKEUP        1       /* dev may initiate wakeup */
112
#define USB_DEVICE_TEST_MODE            2       /* (wired high speed only) */
113
#define USB_DEVICE_BATTERY              2       /* (wireless) */
114
#define USB_DEVICE_B_HNP_ENABLE         3       /* (otg) dev may initiate HNP */
115
#define USB_DEVICE_WUSB_DEVICE          3       /* (wireless)*/
116
#define USB_DEVICE_A_HNP_SUPPORT        4       /* (otg) RH port supports HNP */
117
#define USB_DEVICE_A_ALT_HNP_SUPPORT    5       /* (otg) other RH port does */
118
#define USB_DEVICE_DEBUG_MODE           6       /* (special devices only) */
119
 
120
#define USB_ENDPOINT_HALT               0        /* IN/OUT will STALL */
121
 
122
 
123
/**
124
 * struct usb_ctrlrequest - SETUP data for a USB device control request
125
 * @bRequestType: matches the USB bmRequestType field
126
 * @bRequest: matches the USB bRequest field
127
 * @wValue: matches the USB wValue field (le16 byte order)
128
 * @wIndex: matches the USB wIndex field (le16 byte order)
129
 * @wLength: matches the USB wLength field (le16 byte order)
130
 *
131
 * This structure is used to send control requests to a USB device.  It matches
132
 * the different fields of the USB 2.0 Spec section 9.3, table 9-2.  See the
133
 * USB spec for a fuller description of the different fields, and what they are
134
 * used for.
135
 *
136
 * Note that the driver for any interface can issue control requests.
137
 * For most devices, interfaces don't coordinate with each other, so
138
 * such requests may be made at any time.
139
 */
140
struct usb_ctrlrequest {
141
        __u8 bRequestType;
142
        __u8 bRequest;
143
        __le16 wValue;
144
        __le16 wIndex;
145
        __le16 wLength;
146
} __attribute__ ((packed));
147
 
148
/*-------------------------------------------------------------------------*/
149
 
150
/*
151
 * STANDARD DESCRIPTORS ... as returned by GET_DESCRIPTOR, or
152
 * (rarely) accepted by SET_DESCRIPTOR.
153
 *
154
 * Note that all multi-byte values here are encoded in little endian
155
 * byte order "on the wire".  But when exposed through Linux-USB APIs,
156
 * they've been converted to cpu byte order.
157
 */
158
 
159
/*
160
 * Descriptor types ... USB 2.0 spec table 9.5
161
 */
162
#define USB_DT_DEVICE                   0x01
163
#define USB_DT_CONFIG                   0x02
164
#define USB_DT_STRING                   0x03
165
#define USB_DT_INTERFACE                0x04
166
#define USB_DT_ENDPOINT                 0x05
167
#define USB_DT_DEVICE_QUALIFIER         0x06
168
#define USB_DT_OTHER_SPEED_CONFIG       0x07
169
#define USB_DT_INTERFACE_POWER          0x08
170
/* these are from a minor usb 2.0 revision (ECN) */
171
#define USB_DT_OTG                      0x09
172
#define USB_DT_DEBUG                    0x0a
173
#define USB_DT_INTERFACE_ASSOCIATION    0x0b
174
/* these are from the Wireless USB spec */
175
#define USB_DT_SECURITY                 0x0c
176
#define USB_DT_KEY                      0x0d
177
#define USB_DT_ENCRYPTION_TYPE          0x0e
178
#define USB_DT_BOS                      0x0f
179
#define USB_DT_DEVICE_CAPABILITY        0x10
180
#define USB_DT_WIRELESS_ENDPOINT_COMP   0x11
181
#define USB_DT_WIRE_ADAPTER             0x21
182
#define USB_DT_RPIPE                    0x22
183
 
184
/* Conventional codes for class-specific descriptors.  The convention is
185
 * defined in the USB "Common Class" Spec (3.11).  Individual class specs
186
 * are authoritative for their usage, not the "common class" writeup.
187
 */
188
#define USB_DT_CS_DEVICE                (USB_TYPE_CLASS | USB_DT_DEVICE)
189
#define USB_DT_CS_CONFIG                (USB_TYPE_CLASS | USB_DT_CONFIG)
190
#define USB_DT_CS_STRING                (USB_TYPE_CLASS | USB_DT_STRING)
191
#define USB_DT_CS_INTERFACE             (USB_TYPE_CLASS | USB_DT_INTERFACE)
192
#define USB_DT_CS_ENDPOINT              (USB_TYPE_CLASS | USB_DT_ENDPOINT)
193
 
194
/* All standard descriptors have these 2 fields at the beginning */
195
struct usb_descriptor_header {
196
        __u8  bLength;
197
        __u8  bDescriptorType;
198
} __attribute__ ((packed));
199
 
200
 
201
/*-------------------------------------------------------------------------*/
202
 
203
/* USB_DT_DEVICE: Device descriptor */
204
struct usb_device_descriptor {
205
        __u8  bLength;
206
        __u8  bDescriptorType;
207
 
208
        __le16 bcdUSB;
209
        __u8  bDeviceClass;
210
        __u8  bDeviceSubClass;
211
        __u8  bDeviceProtocol;
212
        __u8  bMaxPacketSize0;
213
        __le16 idVendor;
214
        __le16 idProduct;
215
        __le16 bcdDevice;
216
        __u8  iManufacturer;
217
        __u8  iProduct;
218
        __u8  iSerialNumber;
219
        __u8  bNumConfigurations;
220
} __attribute__ ((packed));
221
 
222
#define USB_DT_DEVICE_SIZE              18
223
 
224
 
225
/*
226
 * Device and/or Interface Class codes
227
 * as found in bDeviceClass or bInterfaceClass
228
 * and defined by www.usb.org documents
229
 */
230
#define USB_CLASS_PER_INTERFACE         0        /* for DeviceClass */
231
#define USB_CLASS_AUDIO                 1
232
#define USB_CLASS_COMM                  2
233
#define USB_CLASS_HID                   3
234
#define USB_CLASS_PHYSICAL              5
235
#define USB_CLASS_STILL_IMAGE           6
236
#define USB_CLASS_PRINTER               7
237
#define USB_CLASS_MASS_STORAGE          8
238
#define USB_CLASS_HUB                   9
239
#define USB_CLASS_CDC_DATA              0x0a
240
#define USB_CLASS_CSCID                 0x0b    /* chip+ smart card */
241
#define USB_CLASS_CONTENT_SEC           0x0d    /* content security */
242
#define USB_CLASS_VIDEO                 0x0e
243
#define USB_CLASS_WIRELESS_CONTROLLER   0xe0
244
#define USB_CLASS_MISC                  0xef
245
#define USB_CLASS_APP_SPEC              0xfe
246
#define USB_CLASS_VENDOR_SPEC           0xff
247
 
248
/*-------------------------------------------------------------------------*/
249
 
250
/* USB_DT_CONFIG: Configuration descriptor information.
251
 *
252
 * USB_DT_OTHER_SPEED_CONFIG is the same descriptor, except that the
253
 * descriptor type is different.  Highspeed-capable devices can look
254
 * different depending on what speed they're currently running.  Only
255
 * devices with a USB_DT_DEVICE_QUALIFIER have any OTHER_SPEED_CONFIG
256
 * descriptors.
257
 */
258
struct usb_config_descriptor {
259
        __u8  bLength;
260
        __u8  bDescriptorType;
261
 
262
        __le16 wTotalLength;
263
        __u8  bNumInterfaces;
264
        __u8  bConfigurationValue;
265
        __u8  iConfiguration;
266
        __u8  bmAttributes;
267
        __u8  bMaxPower;
268
} __attribute__ ((packed));
269
 
270
#define USB_DT_CONFIG_SIZE              9
271
 
272
/* from config descriptor bmAttributes */
273
#define USB_CONFIG_ATT_ONE              (1 << 7)        /* must be set */
274
#define USB_CONFIG_ATT_SELFPOWER        (1 << 6)        /* self powered */
275
#define USB_CONFIG_ATT_WAKEUP           (1 << 5)        /* can wakeup */
276
#define USB_CONFIG_ATT_BATTERY          (1 << 4)        /* battery powered */
277
 
278
/*-------------------------------------------------------------------------*/
279
 
280
/* USB_DT_STRING: String descriptor */
281
struct usb_string_descriptor {
282
        __u8  bLength;
283
        __u8  bDescriptorType;
284
 
285
        __le16 wData[1];                /* UTF-16LE encoded */
286
} __attribute__ ((packed));
287
 
288
/* note that "string" zero is special, it holds language codes that
289
 * the device supports, not Unicode characters.
290
 */
291
 
292
/*-------------------------------------------------------------------------*/
293
 
294
/* USB_DT_INTERFACE: Interface descriptor */
295
struct usb_interface_descriptor {
296
        __u8  bLength;
297
        __u8  bDescriptorType;
298
 
299
        __u8  bInterfaceNumber;
300
        __u8  bAlternateSetting;
301
        __u8  bNumEndpoints;
302
        __u8  bInterfaceClass;
303
        __u8  bInterfaceSubClass;
304
        __u8  bInterfaceProtocol;
305
        __u8  iInterface;
306
} __attribute__ ((packed));
307
 
308
#define USB_DT_INTERFACE_SIZE           9
309
 
310
/*-------------------------------------------------------------------------*/
311
 
312
/* USB_DT_ENDPOINT: Endpoint descriptor */
313
struct usb_endpoint_descriptor {
314
        __u8  bLength;
315
        __u8  bDescriptorType;
316
 
317
        __u8  bEndpointAddress;
318
        __u8  bmAttributes;
319
        __le16 wMaxPacketSize;
320
        __u8  bInterval;
321
 
322
        /* NOTE:  these two are _only_ in audio endpoints. */
323
        /* use USB_DT_ENDPOINT*_SIZE in bLength, not sizeof. */
324
        __u8  bRefresh;
325
        __u8  bSynchAddress;
326
} __attribute__ ((packed));
327
 
328
#define USB_DT_ENDPOINT_SIZE            7
329
#define USB_DT_ENDPOINT_AUDIO_SIZE      9       /* Audio extension */
330
 
331
 
332
/*
333
 * Endpoints
334
 */
335
#define USB_ENDPOINT_NUMBER_MASK        0x0f    /* in bEndpointAddress */
336
#define USB_ENDPOINT_DIR_MASK           0x80
337
 
338
#define USB_ENDPOINT_XFERTYPE_MASK      0x03    /* in bmAttributes */
339
#define USB_ENDPOINT_XFER_CONTROL       0
340
#define USB_ENDPOINT_XFER_ISOC          1
341
#define USB_ENDPOINT_XFER_BULK          2
342
#define USB_ENDPOINT_XFER_INT           3
343
#define USB_ENDPOINT_MAX_ADJUSTABLE     0x80
344
 
345
 
346
/*-------------------------------------------------------------------------*/
347
 
348
/* USB_DT_DEVICE_QUALIFIER: Device Qualifier descriptor */
349
struct usb_qualifier_descriptor {
350
        __u8  bLength;
351
        __u8  bDescriptorType;
352
 
353
        __le16 bcdUSB;
354
        __u8  bDeviceClass;
355
        __u8  bDeviceSubClass;
356
        __u8  bDeviceProtocol;
357
        __u8  bMaxPacketSize0;
358
        __u8  bNumConfigurations;
359
        __u8  bRESERVED;
360
} __attribute__ ((packed));
361
 
362
 
363
/*-------------------------------------------------------------------------*/
364
 
365
/* USB_DT_OTG (from OTG 1.0a supplement) */
366
struct usb_otg_descriptor {
367
        __u8  bLength;
368
        __u8  bDescriptorType;
369
 
370
        __u8  bmAttributes;     /* support for HNP, SRP, etc */
371
} __attribute__ ((packed));
372
 
373
/* from usb_otg_descriptor.bmAttributes */
374
#define USB_OTG_SRP             (1 << 0)
375
#define USB_OTG_HNP             (1 << 1)        /* swap host/device roles */
376
 
377
/*-------------------------------------------------------------------------*/
378
 
379
/* USB_DT_DEBUG:  for special highspeed devices, replacing serial console */
380
struct usb_debug_descriptor {
381
        __u8  bLength;
382
        __u8  bDescriptorType;
383
 
384
        /* bulk endpoints with 8 byte maxpacket */
385
        __u8  bDebugInEndpoint;
386
        __u8  bDebugOutEndpoint;
387
} __attribute__((packed));
388
 
389
/*-------------------------------------------------------------------------*/
390
 
391
/* USB_DT_INTERFACE_ASSOCIATION: groups interfaces */
392
struct usb_interface_assoc_descriptor {
393
        __u8  bLength;
394
        __u8  bDescriptorType;
395
 
396
        __u8  bFirstInterface;
397
        __u8  bInterfaceCount;
398
        __u8  bFunctionClass;
399
        __u8  bFunctionSubClass;
400
        __u8  bFunctionProtocol;
401
        __u8  iFunction;
402
} __attribute__ ((packed));
403
 
404
 
405
/*-------------------------------------------------------------------------*/
406
 
407
/* USB_DT_SECURITY:  group of wireless security descriptors, including
408
 * encryption types available for setting up a CC/association.
409
 */
410
struct usb_security_descriptor {
411
        __u8  bLength;
412
        __u8  bDescriptorType;
413
 
414
        __le16 wTotalLength;
415
        __u8  bNumEncryptionTypes;
416
} __attribute__((packed));
417
 
418
/*-------------------------------------------------------------------------*/
419
 
420
/* USB_DT_KEY:  used with {GET,SET}_SECURITY_DATA; only public keys
421
 * may be retrieved.
422
 */
423
struct usb_key_descriptor {
424
        __u8  bLength;
425
        __u8  bDescriptorType;
426
 
427
        __u8  tTKID[3];
428
        __u8  bReserved;
429
        __u8  bKeyData[0];
430
} __attribute__((packed));
431
 
432
/*-------------------------------------------------------------------------*/
433
 
434
/* USB_DT_ENCRYPTION_TYPE:  bundled in DT_SECURITY groups */
435
struct usb_encryption_descriptor {
436
        __u8  bLength;
437
        __u8  bDescriptorType;
438
 
439
        __u8  bEncryptionType;
440
#define USB_ENC_TYPE_UNSECURE           0
441
#define USB_ENC_TYPE_WIRED              1       /* non-wireless mode */
442
#define USB_ENC_TYPE_CCM_1              2       /* aes128/cbc session */
443
#define USB_ENC_TYPE_RSA_1              3       /* rsa3072/sha1 auth */
444
        __u8  bEncryptionValue;         /* use in SET_ENCRYPTION */
445
        __u8  bAuthKeyIndex;
446
} __attribute__((packed));
447
 
448
 
449
/*-------------------------------------------------------------------------*/
450
 
451
/* USB_DT_BOS:  group of wireless capabilities */
452
struct usb_bos_descriptor {
453
        __u8  bLength;
454
        __u8  bDescriptorType;
455
 
456
        __le16 wTotalLength;
457
        __u8  bNumDeviceCaps;
458
} __attribute__((packed));
459
 
460
/*-------------------------------------------------------------------------*/
461
 
462
/* USB_DT_DEVICE_CAPABILITY:  grouped with BOS */
463
struct usb_dev_cap_header {
464
        __u8  bLength;
465
        __u8  bDescriptorType;
466
        __u8  bDevCapabilityType;
467
} __attribute__((packed));
468
 
469
#define USB_CAP_TYPE_WIRELESS_USB       1
470
 
471
struct usb_wireless_cap_descriptor {    /* Ultra Wide Band */
472
        __u8  bLength;
473
        __u8  bDescriptorType;
474
        __u8  bDevCapabilityType;
475
 
476
        __u8  bmAttributes;
477
#define USB_WIRELESS_P2P_DRD            (1 << 1)
478
#define USB_WIRELESS_BEACON_MASK        (3 << 2)
479
#define USB_WIRELESS_BEACON_SELF        (1 << 2)
480
#define USB_WIRELESS_BEACON_DIRECTED    (2 << 2)
481
#define USB_WIRELESS_BEACON_NONE        (3 << 2)
482
        __le16 wPHYRates;       /* bit rates, Mbps */
483
#define USB_WIRELESS_PHY_53             (1 << 0)        /* always set */
484
#define USB_WIRELESS_PHY_80             (1 << 1)
485
#define USB_WIRELESS_PHY_107            (1 << 2)        /* always set */
486
#define USB_WIRELESS_PHY_160            (1 << 3)
487
#define USB_WIRELESS_PHY_200            (1 << 4)        /* always set */
488
#define USB_WIRELESS_PHY_320            (1 << 5)
489
#define USB_WIRELESS_PHY_400            (1 << 6)
490
#define USB_WIRELESS_PHY_480            (1 << 7)
491
        __u8  bmTFITXPowerInfo; /* TFI power levels */
492
        __u8  bmFFITXPowerInfo; /* FFI power levels */
493
        __le16 bmBandGroup;
494
        __u8  bReserved;
495
} __attribute__((packed));
496
 
497
/*-------------------------------------------------------------------------*/
498
 
499
/* USB_DT_WIRELESS_ENDPOINT_COMP:  companion descriptor associated with
500
 * each endpoint descriptor for a wireless device
501
 */
502
struct usb_wireless_ep_comp_descriptor {
503
        __u8  bLength;
504
        __u8  bDescriptorType;
505
 
506
        __u8  bMaxBurst;
507
        __u8  bMaxSequence;
508
        __le16 wMaxStreamDelay;
509
        __le16 wOverTheAirPacketSize;
510
        __u8  bOverTheAirInterval;
511
        __u8  bmCompAttributes;
512
#define USB_ENDPOINT_SWITCH_MASK        0x03    /* in bmCompAttributes */
513
#define USB_ENDPOINT_SWITCH_NO          0
514
#define USB_ENDPOINT_SWITCH_SWITCH      1
515
#define USB_ENDPOINT_SWITCH_SCALE       2
516
} __attribute__((packed));
517
 
518
/*-------------------------------------------------------------------------*/
519
 
520
/* USB_REQ_SET_HANDSHAKE is a four-way handshake used between a wireless
521
 * host and a device for connection set up, mutual authentication, and
522
 * exchanging short lived session keys.  The handshake depends on a CC.
523
 */
524
struct usb_handshake {
525
        __u8 bMessageNumber;
526
        __u8 bStatus;
527
        __u8 tTKID[3];
528
        __u8 bReserved;
529
        __u8 CDID[16];
530
        __u8 nonce[16];
531
        __u8 MIC[8];
532
} __attribute__((packed));
533
 
534
/*-------------------------------------------------------------------------*/
535
 
536
/* USB_REQ_SET_CONNECTION modifies or revokes a connection context (CC).
537
 * A CC may also be set up using non-wireless secure channels (including
538
 * wired USB!), and some devices may support CCs with multiple hosts.
539
 */
540
struct usb_connection_context {
541
        __u8 CHID[16];          /* persistent host id */
542
        __u8 CDID[16];          /* device id (unique w/in host context) */
543
        __u8 CK[16];            /* connection key */
544
} __attribute__((packed));
545
 
546
/*-------------------------------------------------------------------------*/
547
 
548
/* USB 2.0 defines three speeds, here's how Linux identifies them */
549
 
550
enum usb_device_speed {
551
        USB_SPEED_UNKNOWN = 0,                   /* enumerating */
552
        USB_SPEED_LOW, USB_SPEED_FULL,          /* usb 1.1 */
553
        USB_SPEED_HIGH,                         /* usb 2.0 */
554
        USB_SPEED_VARIABLE,                     /* wireless (usb 2.5) */
555
};
556
 
557
enum usb_device_state {
558
        /* NOTATTACHED isn't in the USB spec, and this state acts
559
         * the same as ATTACHED ... but it's clearer this way.
560
         */
561
        USB_STATE_NOTATTACHED = 0,
562
 
563
        /* chapter 9 and authentication (wireless) device states */
564
        USB_STATE_ATTACHED,
565
        USB_STATE_POWERED,                      /* wired */
566
        USB_STATE_UNAUTHENTICATED,              /* auth */
567
        USB_STATE_RECONNECTING,                 /* auth */
568
        USB_STATE_DEFAULT,                      /* limited function */
569
        USB_STATE_ADDRESS,
570
        USB_STATE_CONFIGURED,                   /* most functions */
571
 
572
        USB_STATE_SUSPENDED
573
 
574
        /* NOTE:  there are actually four different SUSPENDED
575
         * states, returning to POWERED, DEFAULT, ADDRESS, or
576
         * CONFIGURED respectively when SOF tokens flow again.
577
         */
578
};
579
 
580
#endif  /* __LINUX_USB_CH9_H */

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