USB HID: report descriptor of Cypress USB barcode readers needs fixup
[linux-2.6.git] / include / linux / hid.h
1 #ifndef __HID_H
2 #define __HID_H
3
4 /*
5  * $Id: hid.h,v 1.24 2001/12/27 10:37:41 vojtech Exp $
6  *
7  *  Copyright (c) 1999 Andreas Gal
8  *  Copyright (c) 2000-2001 Vojtech Pavlik
9  *  Copyright (c) 2006-2007 Jiri Kosina
10  */
11
12 /*
13  * This program is free software; you can redistribute it and/or modify
14  * it under the terms of the GNU General Public License as published by
15  * the Free Software Foundation; either version 2 of the License, or
16  * (at your option) any later version.
17  *
18  * This program is distributed in the hope that it will be useful,
19  * but WITHOUT ANY WARRANTY; without even the implied warranty of
20  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
21  * GNU General Public License for more details.
22  *
23  * You should have received a copy of the GNU General Public License
24  * along with this program; if not, write to the Free Software
25  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
26  *
27  * Should you need to contact me, the author, you can do so either by
28  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
29  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
30  */
31
32 #include <linux/types.h>
33 #include <linux/slab.h>
34 #include <linux/list.h>
35 #include <linux/timer.h>
36 #include <linux/workqueue.h>
37 #include <linux/input.h>
38
39 /*
40  * USB HID (Human Interface Device) interface class code
41  */
42
43 #define USB_INTERFACE_CLASS_HID         3
44
45 /*
46  * USB HID interface subclass and protocol codes
47  */
48
49 #define USB_INTERFACE_SUBCLASS_BOOT     1
50 #define USB_INTERFACE_PROTOCOL_KEYBOARD 1
51 #define USB_INTERFACE_PROTOCOL_MOUSE    2
52
53 /*
54  * HID class requests
55  */
56
57 #define HID_REQ_GET_REPORT              0x01
58 #define HID_REQ_GET_IDLE                0x02
59 #define HID_REQ_GET_PROTOCOL            0x03
60 #define HID_REQ_SET_REPORT              0x09
61 #define HID_REQ_SET_IDLE                0x0A
62 #define HID_REQ_SET_PROTOCOL            0x0B
63
64 /*
65  * HID class descriptor types
66  */
67
68 #define HID_DT_HID                      (USB_TYPE_CLASS | 0x01)
69 #define HID_DT_REPORT                   (USB_TYPE_CLASS | 0x02)
70 #define HID_DT_PHYSICAL                 (USB_TYPE_CLASS | 0x03)
71
72 /*
73  * We parse each description item into this structure. Short items data
74  * values are expanded to 32-bit signed int, long items contain a pointer
75  * into the data area.
76  */
77
78 struct hid_item {
79         unsigned  format;
80         __u8      size;
81         __u8      type;
82         __u8      tag;
83         union {
84             __u8   u8;
85             __s8   s8;
86             __u16  u16;
87             __s16  s16;
88             __u32  u32;
89             __s32  s32;
90             __u8  *longdata;
91         } data;
92 };
93
94 /*
95  * HID report item format
96  */
97
98 #define HID_ITEM_FORMAT_SHORT   0
99 #define HID_ITEM_FORMAT_LONG    1
100
101 /*
102  * Special tag indicating long items
103  */
104
105 #define HID_ITEM_TAG_LONG       15
106
107 /*
108  * HID report descriptor item type (prefix bit 2,3)
109  */
110
111 #define HID_ITEM_TYPE_MAIN              0
112 #define HID_ITEM_TYPE_GLOBAL            1
113 #define HID_ITEM_TYPE_LOCAL             2
114 #define HID_ITEM_TYPE_RESERVED          3
115
116 /*
117  * HID report descriptor main item tags
118  */
119
120 #define HID_MAIN_ITEM_TAG_INPUT                 8
121 #define HID_MAIN_ITEM_TAG_OUTPUT                9
122 #define HID_MAIN_ITEM_TAG_FEATURE               11
123 #define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION      10
124 #define HID_MAIN_ITEM_TAG_END_COLLECTION        12
125
126 /*
127  * HID report descriptor main item contents
128  */
129
130 #define HID_MAIN_ITEM_CONSTANT          0x001
131 #define HID_MAIN_ITEM_VARIABLE          0x002
132 #define HID_MAIN_ITEM_RELATIVE          0x004
133 #define HID_MAIN_ITEM_WRAP              0x008
134 #define HID_MAIN_ITEM_NONLINEAR         0x010
135 #define HID_MAIN_ITEM_NO_PREFERRED      0x020
136 #define HID_MAIN_ITEM_NULL_STATE        0x040
137 #define HID_MAIN_ITEM_VOLATILE          0x080
138 #define HID_MAIN_ITEM_BUFFERED_BYTE     0x100
139
140 /*
141  * HID report descriptor collection item types
142  */
143
144 #define HID_COLLECTION_PHYSICAL         0
145 #define HID_COLLECTION_APPLICATION      1
146 #define HID_COLLECTION_LOGICAL          2
147
148 /*
149  * HID report descriptor global item tags
150  */
151
152 #define HID_GLOBAL_ITEM_TAG_USAGE_PAGE          0
153 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM     1
154 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM     2
155 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM    3
156 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM    4
157 #define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT       5
158 #define HID_GLOBAL_ITEM_TAG_UNIT                6
159 #define HID_GLOBAL_ITEM_TAG_REPORT_SIZE         7
160 #define HID_GLOBAL_ITEM_TAG_REPORT_ID           8
161 #define HID_GLOBAL_ITEM_TAG_REPORT_COUNT        9
162 #define HID_GLOBAL_ITEM_TAG_PUSH                10
163 #define HID_GLOBAL_ITEM_TAG_POP                 11
164
165 /*
166  * HID report descriptor local item tags
167  */
168
169 #define HID_LOCAL_ITEM_TAG_USAGE                0
170 #define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM        1
171 #define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM        2
172 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX     3
173 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM   4
174 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM   5
175 #define HID_LOCAL_ITEM_TAG_STRING_INDEX         7
176 #define HID_LOCAL_ITEM_TAG_STRING_MINIMUM       8
177 #define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM       9
178 #define HID_LOCAL_ITEM_TAG_DELIMITER            10
179
180 /*
181  * HID usage tables
182  */
183
184 #define HID_USAGE_PAGE          0xffff0000
185
186 #define HID_UP_UNDEFINED        0x00000000
187 #define HID_UP_GENDESK          0x00010000
188 #define HID_UP_SIMULATION       0x00020000
189 #define HID_UP_KEYBOARD         0x00070000
190 #define HID_UP_LED              0x00080000
191 #define HID_UP_BUTTON           0x00090000
192 #define HID_UP_ORDINAL          0x000a0000
193 #define HID_UP_CONSUMER         0x000c0000
194 #define HID_UP_DIGITIZER        0x000d0000
195 #define HID_UP_PID              0x000f0000
196 #define HID_UP_HPVENDOR         0xff7f0000
197 #define HID_UP_MSVENDOR         0xff000000
198 #define HID_UP_CUSTOM           0x00ff0000
199 #define HID_UP_LOGIVENDOR       0xffbc0000
200
201 #define HID_USAGE               0x0000ffff
202
203 #define HID_GD_POINTER          0x00010001
204 #define HID_GD_MOUSE            0x00010002
205 #define HID_GD_JOYSTICK         0x00010004
206 #define HID_GD_GAMEPAD          0x00010005
207 #define HID_GD_KEYBOARD         0x00010006
208 #define HID_GD_KEYPAD           0x00010007
209 #define HID_GD_MULTIAXIS        0x00010008
210 #define HID_GD_X                0x00010030
211 #define HID_GD_Y                0x00010031
212 #define HID_GD_Z                0x00010032
213 #define HID_GD_RX               0x00010033
214 #define HID_GD_RY               0x00010034
215 #define HID_GD_RZ               0x00010035
216 #define HID_GD_SLIDER           0x00010036
217 #define HID_GD_DIAL             0x00010037
218 #define HID_GD_WHEEL            0x00010038
219 #define HID_GD_HATSWITCH        0x00010039
220 #define HID_GD_BUFFER           0x0001003a
221 #define HID_GD_BYTECOUNT        0x0001003b
222 #define HID_GD_MOTION           0x0001003c
223 #define HID_GD_START            0x0001003d
224 #define HID_GD_SELECT           0x0001003e
225 #define HID_GD_VX               0x00010040
226 #define HID_GD_VY               0x00010041
227 #define HID_GD_VZ               0x00010042
228 #define HID_GD_VBRX             0x00010043
229 #define HID_GD_VBRY             0x00010044
230 #define HID_GD_VBRZ             0x00010045
231 #define HID_GD_VNO              0x00010046
232 #define HID_GD_FEATURE          0x00010047
233 #define HID_GD_UP               0x00010090
234 #define HID_GD_DOWN             0x00010091
235 #define HID_GD_RIGHT            0x00010092
236 #define HID_GD_LEFT             0x00010093
237
238 /*
239  * HID report types --- Ouch! HID spec says 1 2 3!
240  */
241
242 #define HID_INPUT_REPORT        0
243 #define HID_OUTPUT_REPORT       1
244 #define HID_FEATURE_REPORT      2
245
246 /*
247  * HID device quirks.
248  */
249
250 /* 
251  * Increase this if you need to configure more HID quirks at module load time
252  */
253 #define MAX_USBHID_BOOT_QUIRKS 4
254
255 #define HID_QUIRK_INVERT                        0x00000001
256 #define HID_QUIRK_NOTOUCH                       0x00000002
257 #define HID_QUIRK_IGNORE                        0x00000004
258 #define HID_QUIRK_NOGET                         0x00000008
259 #define HID_QUIRK_HIDDEV                        0x00000010
260 #define HID_QUIRK_BADPAD                        0x00000020
261 #define HID_QUIRK_MULTI_INPUT                   0x00000040
262 #define HID_QUIRK_2WHEEL_MOUSE_HACK_7           0x00000080
263 #define HID_QUIRK_2WHEEL_MOUSE_HACK_5           0x00000100
264 #define HID_QUIRK_2WHEEL_MOUSE_HACK_ON          0x00000200
265 #define HID_QUIRK_MIGHTYMOUSE                   0x00000400
266 #define HID_QUIRK_CYMOTION                      0x00000800
267 #define HID_QUIRK_POWERBOOK_HAS_FN              0x00001000
268 #define HID_QUIRK_POWERBOOK_FN_ON               0x00002000
269 #define HID_QUIRK_INVERT_HWHEEL                 0x00004000
270 #define HID_QUIRK_POWERBOOK_ISO_KEYBOARD        0x00008000
271 #define HID_QUIRK_BAD_RELATIVE_KEYS             0x00010000
272 #define HID_QUIRK_SKIP_OUTPUT_REPORTS           0x00020000
273 #define HID_QUIRK_IGNORE_MOUSE                  0x00040000
274 #define HID_QUIRK_SONY_PS3_CONTROLLER           0x00080000
275 #define HID_QUIRK_LOGITECH_DESCRIPTOR           0x00100000
276 #define HID_QUIRK_DUPLICATE_USAGES              0x00200000
277 #define HID_QUIRK_RESET_LEDS                    0x00400000
278 #define HID_QUIRK_SWAPPED_MIN_MAX               0x00800000
279
280 /*
281  * This is the global environment of the parser. This information is
282  * persistent for main-items. The global environment can be saved and
283  * restored with PUSH/POP statements.
284  */
285
286 struct hid_global {
287         unsigned usage_page;
288         __s32    logical_minimum;
289         __s32    logical_maximum;
290         __s32    physical_minimum;
291         __s32    physical_maximum;
292         __s32    unit_exponent;
293         unsigned unit;
294         unsigned report_id;
295         unsigned report_size;
296         unsigned report_count;
297 };
298
299 /*
300  * This is the local environment. It is persistent up the next main-item.
301  */
302
303 #define HID_MAX_DESCRIPTOR_SIZE         4096
304 #define HID_MAX_USAGES                  8192
305 #define HID_DEFAULT_NUM_COLLECTIONS     16
306
307 struct hid_local {
308         unsigned usage[HID_MAX_USAGES]; /* usage array */
309         unsigned collection_index[HID_MAX_USAGES]; /* collection index array */
310         unsigned usage_index;
311         unsigned usage_minimum;
312         unsigned delimiter_depth;
313         unsigned delimiter_branch;
314 };
315
316 /*
317  * This is the collection stack. We climb up the stack to determine
318  * application and function of each field.
319  */
320
321 struct hid_collection {
322         unsigned type;
323         unsigned usage;
324         unsigned level;
325 };
326
327 struct hid_usage {
328         unsigned  hid;                  /* hid usage code */
329         unsigned  collection_index;     /* index into collection array */
330         /* hidinput data */
331         __u16     code;                 /* input driver code */
332         __u8      type;                 /* input driver type */
333         __s8      hat_min;              /* hat switch fun */
334         __s8      hat_max;              /* ditto */
335         __s8      hat_dir;              /* ditto */
336 };
337
338 struct hid_input;
339
340 struct hid_field {
341         unsigned  physical;             /* physical usage for this field */
342         unsigned  logical;              /* logical usage for this field */
343         unsigned  application;          /* application usage for this field */
344         struct hid_usage *usage;        /* usage table for this function */
345         unsigned  maxusage;             /* maximum usage index */
346         unsigned  flags;                /* main-item flags (i.e. volatile,array,constant) */
347         unsigned  report_offset;        /* bit offset in the report */
348         unsigned  report_size;          /* size of this field in the report */
349         unsigned  report_count;         /* number of this field in the report */
350         unsigned  report_type;          /* (input,output,feature) */
351         __s32    *value;                /* last known value(s) */
352         __s32     logical_minimum;
353         __s32     logical_maximum;
354         __s32     physical_minimum;
355         __s32     physical_maximum;
356         __s32     unit_exponent;
357         unsigned  unit;
358         struct hid_report *report;      /* associated report */
359         unsigned index;                 /* index into report->field[] */
360         /* hidinput data */
361         struct hid_input *hidinput;     /* associated input structure */
362         __u16 dpad;                     /* dpad input code */
363 };
364
365 #define HID_MAX_FIELDS 64
366
367 struct hid_report {
368         struct list_head list;
369         unsigned id;                                    /* id of this report */
370         unsigned type;                                  /* report type */
371         struct hid_field *field[HID_MAX_FIELDS];        /* fields of the report */
372         unsigned maxfield;                              /* maximum valid field index */
373         unsigned size;                                  /* size of the report (bits) */
374         struct hid_device *device;                      /* associated device */
375 };
376
377 struct hid_report_enum {
378         unsigned numbered;
379         struct list_head report_list;
380         struct hid_report *report_id_hash[256];
381 };
382
383 #define HID_REPORT_TYPES 3
384
385 #define HID_MIN_BUFFER_SIZE     64              /* make sure there is at least a packet size of space */
386 #define HID_MAX_BUFFER_SIZE     4096            /* 4kb */
387 #define HID_CONTROL_FIFO_SIZE   256             /* to init devices with >100 reports */
388 #define HID_OUTPUT_FIFO_SIZE    64
389
390 struct hid_control_fifo {
391         unsigned char dir;
392         struct hid_report *report;
393 };
394
395 #define HID_CLAIMED_INPUT       1
396 #define HID_CLAIMED_HIDDEV      2
397
398 #define HID_CTRL_RUNNING        1
399 #define HID_OUT_RUNNING         2
400 #define HID_IN_RUNNING          3
401 #define HID_RESET_PENDING       4
402 #define HID_SUSPENDED           5
403 #define HID_CLEAR_HALT          6
404
405 struct hid_input {
406         struct list_head list;
407         struct hid_report *report;
408         struct input_dev *input;
409 };
410
411 struct hid_device {                                                     /* device report descriptor */
412          __u8 *rdesc;
413         unsigned rsize;
414         struct hid_collection *collection;                              /* List of HID collections */
415         unsigned collection_size;                                       /* Number of allocated hid_collections */
416         unsigned maxcollection;                                         /* Number of parsed collections */
417         unsigned maxapplication;                                        /* Number of applications */
418         unsigned short bus;                                             /* BUS ID */
419         unsigned short vendor;                                          /* Vendor ID */
420         unsigned short product;                                         /* Product ID */
421         unsigned version;                                               /* HID version */
422         unsigned country;                                               /* HID country */
423         struct hid_report_enum report_enum[HID_REPORT_TYPES];
424
425         struct device *dev;                                             /* device */
426
427         unsigned claimed;                                               /* Claimed by hidinput, hiddev? */
428         unsigned quirks;                                                /* Various quirks the device can pull on us */
429
430         struct list_head inputs;                                        /* The list of inputs */
431         void *hiddev;                                                   /* The hiddev structure */
432         int minor;                                                      /* Hiddev minor number */
433
434         wait_queue_head_t wait;                                         /* For sleeping */
435
436         int open;                                                       /* is the device open by anyone? */
437         char name[128];                                                 /* Device name */
438         char phys[64];                                                  /* Device physical location */
439         char uniq[64];                                                  /* Device unique identifier (serial #) */
440
441         void *driver_data;
442
443         /* device-specific function pointers */
444         int (*hidinput_input_event) (struct input_dev *, unsigned int, unsigned int, int);
445         int (*hid_open) (struct hid_device *);
446         void (*hid_close) (struct hid_device *);
447
448         /* hiddev event handler */
449         void (*hiddev_hid_event) (struct hid_device *, struct hid_field *field,
450                                   struct hid_usage *, __s32);
451         void (*hiddev_report_event) (struct hid_device *, struct hid_report *);
452 #ifdef CONFIG_USB_HIDINPUT_POWERBOOK
453         unsigned long pb_pressed_fn[NBITS(KEY_MAX)];
454         unsigned long pb_pressed_numlock[NBITS(KEY_MAX)];
455 #endif
456 };
457
458 #define HID_GLOBAL_STACK_SIZE 4
459 #define HID_COLLECTION_STACK_SIZE 4
460
461 struct hid_parser {
462         struct hid_global     global;
463         struct hid_global     global_stack[HID_GLOBAL_STACK_SIZE];
464         unsigned              global_stack_ptr;
465         struct hid_local      local;
466         unsigned              collection_stack[HID_COLLECTION_STACK_SIZE];
467         unsigned              collection_stack_ptr;
468         struct hid_device    *device;
469 };
470
471 struct hid_class_descriptor {
472         __u8  bDescriptorType;
473         __u16 wDescriptorLength;
474 } __attribute__ ((packed));
475
476 struct hid_descriptor {
477         __u8  bLength;
478         __u8  bDescriptorType;
479         __u16 bcdHID;
480         __u8  bCountryCode;
481         __u8  bNumDescriptors;
482
483         struct hid_class_descriptor desc[1];
484 } __attribute__ ((packed));
485
486 /* Applications from HID Usage Tables 4/8/99 Version 1.1 */
487 /* We ignore a few input applications that are not widely used */
488 #define IS_INPUT_APPLICATION(a) (((a >= 0x00010000) && (a <= 0x00010008)) || (a == 0x00010080) || (a == 0x000c0001))
489
490 /* HID core API */
491 extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32);
492 extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report);
493 extern int hidinput_connect(struct hid_device *);
494 extern void hidinput_disconnect(struct hid_device *);
495
496 int hid_set_field(struct hid_field *, unsigned, __s32);
497 int hid_input_report(struct hid_device *, int type, u8 *, int, int);
498 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field);
499 void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, int interrupt);
500 void hid_output_report(struct hid_report *report, __u8 *data);
501 void hid_free_device(struct hid_device *device);
502 struct hid_device *hid_parse_report(__u8 *start, unsigned size);
503
504 /* HID quirks API */
505 u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct);
506 int usbhid_modify_dquirk(const u16 idVendor, const u16 idProduct, const u32 quirks);
507 int usbhid_quirks_init(char **quirks_param);
508 void usbhid_quirks_exit(void);
509
510 #ifdef CONFIG_HID_FF
511 int hid_ff_init(struct hid_device *hid);
512
513 int hid_lgff_init(struct hid_device *hid);
514 int hid_plff_init(struct hid_device *hid);
515 int hid_tmff_init(struct hid_device *hid);
516 int hid_zpff_init(struct hid_device *hid);
517 #ifdef CONFIG_HID_PID
518 int hid_pidff_init(struct hid_device *hid);
519 #else
520 static inline int hid_pidff_init(struct hid_device *hid) { return -ENODEV; }
521 #endif
522
523 #else
524 static inline int hid_ff_init(struct hid_device *hid) { return -1; }
525 #endif
526 #ifdef DEBUG
527 #define dbg(format, arg...) printk(KERN_DEBUG "%s: " format "\n" , \
528                 __FILE__ , ## arg)
529 #else
530 #define dbg(format, arg...) do {} while (0)
531 #endif
532
533 #define err(format, arg...) printk(KERN_ERR "%s: " format "\n" , \
534                 __FILE__ , ## arg)
535 #endif
536