Line data Source code
1 : /* SPDX-License-Identifier: GPL-2.0-or-later */
2 : /*
3 : * Copyright (c) 1999 Andreas Gal
4 : * Copyright (c) 2000-2001 Vojtech Pavlik
5 : * Copyright (c) 2006-2007 Jiri Kosina
6 : */
7 : /*
8 : *
9 : * Should you need to contact me, the author, you can do so either by
10 : * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
11 : * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
12 : */
13 : #ifndef __HID_H
14 : #define __HID_H
15 :
16 :
17 : #include <linux/bitops.h>
18 : #include <linux/types.h>
19 : #include <linux/slab.h>
20 : #include <linux/list.h>
21 : #include <linux/mod_devicetable.h> /* hid_device_id */
22 : #include <linux/timer.h>
23 : #include <linux/workqueue.h>
24 : #include <linux/input.h>
25 : #include <linux/semaphore.h>
26 : #include <linux/mutex.h>
27 : #include <linux/power_supply.h>
28 : #include <uapi/linux/hid.h>
29 : #include <linux/hid_bpf.h>
30 :
31 : /*
32 : * We parse each description item into this structure. Short items data
33 : * values are expanded to 32-bit signed int, long items contain a pointer
34 : * into the data area.
35 : */
36 :
37 : struct hid_item {
38 : unsigned format;
39 : __u8 size;
40 : __u8 type;
41 : __u8 tag;
42 : union {
43 : __u8 u8;
44 : __s8 s8;
45 : __u16 u16;
46 : __s16 s16;
47 : __u32 u32;
48 : __s32 s32;
49 : __u8 *longdata;
50 : } data;
51 : };
52 :
53 : /*
54 : * HID report item format
55 : */
56 :
57 : #define HID_ITEM_FORMAT_SHORT 0
58 : #define HID_ITEM_FORMAT_LONG 1
59 :
60 : /*
61 : * Special tag indicating long items
62 : */
63 :
64 : #define HID_ITEM_TAG_LONG 15
65 :
66 : /*
67 : * HID report descriptor item type (prefix bit 2,3)
68 : */
69 :
70 : #define HID_ITEM_TYPE_MAIN 0
71 : #define HID_ITEM_TYPE_GLOBAL 1
72 : #define HID_ITEM_TYPE_LOCAL 2
73 : #define HID_ITEM_TYPE_RESERVED 3
74 :
75 : /*
76 : * HID report descriptor main item tags
77 : */
78 :
79 : #define HID_MAIN_ITEM_TAG_INPUT 8
80 : #define HID_MAIN_ITEM_TAG_OUTPUT 9
81 : #define HID_MAIN_ITEM_TAG_FEATURE 11
82 : #define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION 10
83 : #define HID_MAIN_ITEM_TAG_END_COLLECTION 12
84 :
85 : /*
86 : * HID report descriptor main item contents
87 : */
88 :
89 : #define HID_MAIN_ITEM_CONSTANT 0x001
90 : #define HID_MAIN_ITEM_VARIABLE 0x002
91 : #define HID_MAIN_ITEM_RELATIVE 0x004
92 : #define HID_MAIN_ITEM_WRAP 0x008
93 : #define HID_MAIN_ITEM_NONLINEAR 0x010
94 : #define HID_MAIN_ITEM_NO_PREFERRED 0x020
95 : #define HID_MAIN_ITEM_NULL_STATE 0x040
96 : #define HID_MAIN_ITEM_VOLATILE 0x080
97 : #define HID_MAIN_ITEM_BUFFERED_BYTE 0x100
98 :
99 : /*
100 : * HID report descriptor collection item types
101 : */
102 :
103 : #define HID_COLLECTION_PHYSICAL 0
104 : #define HID_COLLECTION_APPLICATION 1
105 : #define HID_COLLECTION_LOGICAL 2
106 : #define HID_COLLECTION_NAMED_ARRAY 4
107 :
108 : /*
109 : * HID report descriptor global item tags
110 : */
111 :
112 : #define HID_GLOBAL_ITEM_TAG_USAGE_PAGE 0
113 : #define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM 1
114 : #define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM 2
115 : #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM 3
116 : #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM 4
117 : #define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT 5
118 : #define HID_GLOBAL_ITEM_TAG_UNIT 6
119 : #define HID_GLOBAL_ITEM_TAG_REPORT_SIZE 7
120 : #define HID_GLOBAL_ITEM_TAG_REPORT_ID 8
121 : #define HID_GLOBAL_ITEM_TAG_REPORT_COUNT 9
122 : #define HID_GLOBAL_ITEM_TAG_PUSH 10
123 : #define HID_GLOBAL_ITEM_TAG_POP 11
124 :
125 : /*
126 : * HID report descriptor local item tags
127 : */
128 :
129 : #define HID_LOCAL_ITEM_TAG_USAGE 0
130 : #define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM 1
131 : #define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM 2
132 : #define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX 3
133 : #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM 4
134 : #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM 5
135 : #define HID_LOCAL_ITEM_TAG_STRING_INDEX 7
136 : #define HID_LOCAL_ITEM_TAG_STRING_MINIMUM 8
137 : #define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM 9
138 : #define HID_LOCAL_ITEM_TAG_DELIMITER 10
139 :
140 : /*
141 : * HID usage tables
142 : */
143 :
144 : #define HID_USAGE_PAGE 0xffff0000
145 :
146 : #define HID_UP_UNDEFINED 0x00000000
147 : #define HID_UP_GENDESK 0x00010000
148 : #define HID_UP_SIMULATION 0x00020000
149 : #define HID_UP_GENDEVCTRLS 0x00060000
150 : #define HID_UP_KEYBOARD 0x00070000
151 : #define HID_UP_LED 0x00080000
152 : #define HID_UP_BUTTON 0x00090000
153 : #define HID_UP_ORDINAL 0x000a0000
154 : #define HID_UP_TELEPHONY 0x000b0000
155 : #define HID_UP_CONSUMER 0x000c0000
156 : #define HID_UP_DIGITIZER 0x000d0000
157 : #define HID_UP_PID 0x000f0000
158 : #define HID_UP_BATTERY 0x00850000
159 : #define HID_UP_CAMERA 0x00900000
160 : #define HID_UP_HPVENDOR 0xff7f0000
161 : #define HID_UP_HPVENDOR2 0xff010000
162 : #define HID_UP_MSVENDOR 0xff000000
163 : #define HID_UP_CUSTOM 0x00ff0000
164 : #define HID_UP_LOGIVENDOR 0xffbc0000
165 : #define HID_UP_LOGIVENDOR2 0xff090000
166 : #define HID_UP_LOGIVENDOR3 0xff430000
167 : #define HID_UP_LNVENDOR 0xffa00000
168 : #define HID_UP_SENSOR 0x00200000
169 : #define HID_UP_ASUSVENDOR 0xff310000
170 : #define HID_UP_GOOGLEVENDOR 0xffd10000
171 :
172 : #define HID_USAGE 0x0000ffff
173 :
174 : #define HID_GD_POINTER 0x00010001
175 : #define HID_GD_MOUSE 0x00010002
176 : #define HID_GD_JOYSTICK 0x00010004
177 : #define HID_GD_GAMEPAD 0x00010005
178 : #define HID_GD_KEYBOARD 0x00010006
179 : #define HID_GD_KEYPAD 0x00010007
180 : #define HID_GD_MULTIAXIS 0x00010008
181 : /*
182 : * Microsoft Win8 Wireless Radio Controls extensions CA, see:
183 : * http://www.usb.org/developers/hidpage/HUTRR40RadioHIDUsagesFinal.pdf
184 : */
185 : #define HID_GD_WIRELESS_RADIO_CTLS 0x0001000c
186 : /*
187 : * System Multi-Axis, see:
188 : * http://www.usb.org/developers/hidpage/HUTRR62_-_Generic_Desktop_CA_for_System_Multi-Axis_Controllers.txt
189 : */
190 : #define HID_GD_SYSTEM_MULTIAXIS 0x0001000e
191 :
192 : #define HID_GD_X 0x00010030
193 : #define HID_GD_Y 0x00010031
194 : #define HID_GD_Z 0x00010032
195 : #define HID_GD_RX 0x00010033
196 : #define HID_GD_RY 0x00010034
197 : #define HID_GD_RZ 0x00010035
198 : #define HID_GD_SLIDER 0x00010036
199 : #define HID_GD_DIAL 0x00010037
200 : #define HID_GD_WHEEL 0x00010038
201 : #define HID_GD_HATSWITCH 0x00010039
202 : #define HID_GD_BUFFER 0x0001003a
203 : #define HID_GD_BYTECOUNT 0x0001003b
204 : #define HID_GD_MOTION 0x0001003c
205 : #define HID_GD_START 0x0001003d
206 : #define HID_GD_SELECT 0x0001003e
207 : #define HID_GD_VX 0x00010040
208 : #define HID_GD_VY 0x00010041
209 : #define HID_GD_VZ 0x00010042
210 : #define HID_GD_VBRX 0x00010043
211 : #define HID_GD_VBRY 0x00010044
212 : #define HID_GD_VBRZ 0x00010045
213 : #define HID_GD_VNO 0x00010046
214 : #define HID_GD_FEATURE 0x00010047
215 : #define HID_GD_RESOLUTION_MULTIPLIER 0x00010048
216 : #define HID_GD_SYSTEM_CONTROL 0x00010080
217 : #define HID_GD_UP 0x00010090
218 : #define HID_GD_DOWN 0x00010091
219 : #define HID_GD_RIGHT 0x00010092
220 : #define HID_GD_LEFT 0x00010093
221 : /* Microsoft Win8 Wireless Radio Controls CA usage codes */
222 : #define HID_GD_RFKILL_BTN 0x000100c6
223 : #define HID_GD_RFKILL_LED 0x000100c7
224 : #define HID_GD_RFKILL_SWITCH 0x000100c8
225 :
226 : #define HID_DC_BATTERYSTRENGTH 0x00060020
227 :
228 : #define HID_CP_CONSUMER_CONTROL 0x000c0001
229 : #define HID_CP_AC_PAN 0x000c0238
230 :
231 : #define HID_DG_DIGITIZER 0x000d0001
232 : #define HID_DG_PEN 0x000d0002
233 : #define HID_DG_LIGHTPEN 0x000d0003
234 : #define HID_DG_TOUCHSCREEN 0x000d0004
235 : #define HID_DG_TOUCHPAD 0x000d0005
236 : #define HID_DG_WHITEBOARD 0x000d0006
237 : #define HID_DG_STYLUS 0x000d0020
238 : #define HID_DG_PUCK 0x000d0021
239 : #define HID_DG_FINGER 0x000d0022
240 : #define HID_DG_TIPPRESSURE 0x000d0030
241 : #define HID_DG_BARRELPRESSURE 0x000d0031
242 : #define HID_DG_INRANGE 0x000d0032
243 : #define HID_DG_TOUCH 0x000d0033
244 : #define HID_DG_UNTOUCH 0x000d0034
245 : #define HID_DG_TAP 0x000d0035
246 : #define HID_DG_TRANSDUCER_INDEX 0x000d0038
247 : #define HID_DG_TABLETFUNCTIONKEY 0x000d0039
248 : #define HID_DG_PROGRAMCHANGEKEY 0x000d003a
249 : #define HID_DG_BATTERYSTRENGTH 0x000d003b
250 : #define HID_DG_INVERT 0x000d003c
251 : #define HID_DG_TILT_X 0x000d003d
252 : #define HID_DG_TILT_Y 0x000d003e
253 : #define HID_DG_TWIST 0x000d0041
254 : #define HID_DG_TIPSWITCH 0x000d0042
255 : #define HID_DG_TIPSWITCH2 0x000d0043
256 : #define HID_DG_BARRELSWITCH 0x000d0044
257 : #define HID_DG_ERASER 0x000d0045
258 : #define HID_DG_TABLETPICK 0x000d0046
259 : #define HID_DG_PEN_COLOR 0x000d005c
260 : #define HID_DG_PEN_LINE_WIDTH 0x000d005e
261 : #define HID_DG_PEN_LINE_STYLE 0x000d0070
262 : #define HID_DG_PEN_LINE_STYLE_INK 0x000d0072
263 : #define HID_DG_PEN_LINE_STYLE_PENCIL 0x000d0073
264 : #define HID_DG_PEN_LINE_STYLE_HIGHLIGHTER 0x000d0074
265 : #define HID_DG_PEN_LINE_STYLE_CHISEL_MARKER 0x000d0075
266 : #define HID_DG_PEN_LINE_STYLE_BRUSH 0x000d0076
267 : #define HID_DG_PEN_LINE_STYLE_NO_PREFERENCE 0x000d0077
268 :
269 : #define HID_CP_CONSUMERCONTROL 0x000c0001
270 : #define HID_CP_NUMERICKEYPAD 0x000c0002
271 : #define HID_CP_PROGRAMMABLEBUTTONS 0x000c0003
272 : #define HID_CP_MICROPHONE 0x000c0004
273 : #define HID_CP_HEADPHONE 0x000c0005
274 : #define HID_CP_GRAPHICEQUALIZER 0x000c0006
275 : #define HID_CP_FUNCTIONBUTTONS 0x000c0036
276 : #define HID_CP_SELECTION 0x000c0080
277 : #define HID_CP_MEDIASELECTION 0x000c0087
278 : #define HID_CP_SELECTDISC 0x000c00ba
279 : #define HID_CP_VOLUMEUP 0x000c00e9
280 : #define HID_CP_VOLUMEDOWN 0x000c00ea
281 : #define HID_CP_PLAYBACKSPEED 0x000c00f1
282 : #define HID_CP_PROXIMITY 0x000c0109
283 : #define HID_CP_SPEAKERSYSTEM 0x000c0160
284 : #define HID_CP_CHANNELLEFT 0x000c0161
285 : #define HID_CP_CHANNELRIGHT 0x000c0162
286 : #define HID_CP_CHANNELCENTER 0x000c0163
287 : #define HID_CP_CHANNELFRONT 0x000c0164
288 : #define HID_CP_CHANNELCENTERFRONT 0x000c0165
289 : #define HID_CP_CHANNELSIDE 0x000c0166
290 : #define HID_CP_CHANNELSURROUND 0x000c0167
291 : #define HID_CP_CHANNELLOWFREQUENCYENHANCEMENT 0x000c0168
292 : #define HID_CP_CHANNELTOP 0x000c0169
293 : #define HID_CP_CHANNELUNKNOWN 0x000c016a
294 : #define HID_CP_APPLICATIONLAUNCHBUTTONS 0x000c0180
295 : #define HID_CP_GENERICGUIAPPLICATIONCONTROLS 0x000c0200
296 :
297 : #define HID_DG_DEVICECONFIG 0x000d000e
298 : #define HID_DG_DEVICESETTINGS 0x000d0023
299 : #define HID_DG_AZIMUTH 0x000d003f
300 : #define HID_DG_CONFIDENCE 0x000d0047
301 : #define HID_DG_WIDTH 0x000d0048
302 : #define HID_DG_HEIGHT 0x000d0049
303 : #define HID_DG_CONTACTID 0x000d0051
304 : #define HID_DG_INPUTMODE 0x000d0052
305 : #define HID_DG_DEVICEINDEX 0x000d0053
306 : #define HID_DG_CONTACTCOUNT 0x000d0054
307 : #define HID_DG_CONTACTMAX 0x000d0055
308 : #define HID_DG_SCANTIME 0x000d0056
309 : #define HID_DG_SURFACESWITCH 0x000d0057
310 : #define HID_DG_BUTTONSWITCH 0x000d0058
311 : #define HID_DG_BUTTONTYPE 0x000d0059
312 : #define HID_DG_BARRELSWITCH2 0x000d005a
313 : #define HID_DG_TOOLSERIALNUMBER 0x000d005b
314 : #define HID_DG_LATENCYMODE 0x000d0060
315 :
316 : #define HID_BAT_ABSOLUTESTATEOFCHARGE 0x00850065
317 : #define HID_BAT_CHARGING 0x00850044
318 :
319 : #define HID_VD_ASUS_CUSTOM_MEDIA_KEYS 0xff310076
320 :
321 : /*
322 : * HID connect requests
323 : */
324 :
325 : #define HID_CONNECT_HIDINPUT BIT(0)
326 : #define HID_CONNECT_HIDINPUT_FORCE BIT(1)
327 : #define HID_CONNECT_HIDRAW BIT(2)
328 : #define HID_CONNECT_HIDDEV BIT(3)
329 : #define HID_CONNECT_HIDDEV_FORCE BIT(4)
330 : #define HID_CONNECT_FF BIT(5)
331 : #define HID_CONNECT_DRIVER BIT(6)
332 : #define HID_CONNECT_DEFAULT (HID_CONNECT_HIDINPUT|HID_CONNECT_HIDRAW| \
333 : HID_CONNECT_HIDDEV|HID_CONNECT_FF)
334 :
335 : /*
336 : * HID device quirks.
337 : */
338 :
339 : /*
340 : * Increase this if you need to configure more HID quirks at module load time
341 : */
342 : #define MAX_USBHID_BOOT_QUIRKS 4
343 :
344 : /* BIT(0) reserved for backward compatibility, was HID_QUIRK_INVERT */
345 : #define HID_QUIRK_NOTOUCH BIT(1)
346 : #define HID_QUIRK_IGNORE BIT(2)
347 : #define HID_QUIRK_NOGET BIT(3)
348 : #define HID_QUIRK_HIDDEV_FORCE BIT(4)
349 : #define HID_QUIRK_BADPAD BIT(5)
350 : #define HID_QUIRK_MULTI_INPUT BIT(6)
351 : #define HID_QUIRK_HIDINPUT_FORCE BIT(7)
352 : /* BIT(8) reserved for backward compatibility, was HID_QUIRK_NO_EMPTY_INPUT */
353 : /* BIT(9) reserved for backward compatibility, was NO_INIT_INPUT_REPORTS */
354 : #define HID_QUIRK_ALWAYS_POLL BIT(10)
355 : #define HID_QUIRK_INPUT_PER_APP BIT(11)
356 : #define HID_QUIRK_X_INVERT BIT(12)
357 : #define HID_QUIRK_Y_INVERT BIT(13)
358 : #define HID_QUIRK_SKIP_OUTPUT_REPORTS BIT(16)
359 : #define HID_QUIRK_SKIP_OUTPUT_REPORT_ID BIT(17)
360 : #define HID_QUIRK_NO_OUTPUT_REPORTS_ON_INTR_EP BIT(18)
361 : #define HID_QUIRK_HAVE_SPECIAL_DRIVER BIT(19)
362 : #define HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE BIT(20)
363 : #define HID_QUIRK_FULLSPEED_INTERVAL BIT(28)
364 : #define HID_QUIRK_NO_INIT_REPORTS BIT(29)
365 : #define HID_QUIRK_NO_IGNORE BIT(30)
366 : #define HID_QUIRK_NO_INPUT_SYNC BIT(31)
367 :
368 : /*
369 : * HID device groups
370 : *
371 : * Note: HID_GROUP_ANY is declared in linux/mod_devicetable.h
372 : * and has a value of 0x0000
373 : */
374 : #define HID_GROUP_GENERIC 0x0001
375 : #define HID_GROUP_MULTITOUCH 0x0002
376 : #define HID_GROUP_SENSOR_HUB 0x0003
377 : #define HID_GROUP_MULTITOUCH_WIN_8 0x0004
378 :
379 : /*
380 : * Vendor specific HID device groups
381 : */
382 : #define HID_GROUP_RMI 0x0100
383 : #define HID_GROUP_WACOM 0x0101
384 : #define HID_GROUP_LOGITECH_DJ_DEVICE 0x0102
385 : #define HID_GROUP_STEAM 0x0103
386 : #define HID_GROUP_LOGITECH_27MHZ_DEVICE 0x0104
387 : #define HID_GROUP_VIVALDI 0x0105
388 :
389 : /*
390 : * HID protocol status
391 : */
392 : #define HID_REPORT_PROTOCOL 1
393 : #define HID_BOOT_PROTOCOL 0
394 :
395 : /*
396 : * This is the global environment of the parser. This information is
397 : * persistent for main-items. The global environment can be saved and
398 : * restored with PUSH/POP statements.
399 : */
400 :
401 : struct hid_global {
402 : unsigned usage_page;
403 : __s32 logical_minimum;
404 : __s32 logical_maximum;
405 : __s32 physical_minimum;
406 : __s32 physical_maximum;
407 : __s32 unit_exponent;
408 : unsigned unit;
409 : unsigned report_id;
410 : unsigned report_size;
411 : unsigned report_count;
412 : };
413 :
414 : /*
415 : * This is the local environment. It is persistent up the next main-item.
416 : */
417 :
418 : #define HID_MAX_USAGES 12288
419 : #define HID_DEFAULT_NUM_COLLECTIONS 16
420 :
421 : struct hid_local {
422 : unsigned usage[HID_MAX_USAGES]; /* usage array */
423 : u8 usage_size[HID_MAX_USAGES]; /* usage size array */
424 : unsigned collection_index[HID_MAX_USAGES]; /* collection index array */
425 : unsigned usage_index;
426 : unsigned usage_minimum;
427 : unsigned delimiter_depth;
428 : unsigned delimiter_branch;
429 : };
430 :
431 : /*
432 : * This is the collection stack. We climb up the stack to determine
433 : * application and function of each field.
434 : */
435 :
436 : struct hid_collection {
437 : int parent_idx; /* device->collection */
438 : unsigned type;
439 : unsigned usage;
440 : unsigned level;
441 : };
442 :
443 : struct hid_usage {
444 : unsigned hid; /* hid usage code */
445 : unsigned collection_index; /* index into collection array */
446 : unsigned usage_index; /* index into usage array */
447 : __s8 resolution_multiplier;/* Effective Resolution Multiplier
448 : (HUT v1.12, 4.3.1), default: 1 */
449 : /* hidinput data */
450 : __s8 wheel_factor; /* 120/resolution_multiplier */
451 : __u16 code; /* input driver code */
452 : __u8 type; /* input driver type */
453 : __s8 hat_min; /* hat switch fun */
454 : __s8 hat_max; /* ditto */
455 : __s8 hat_dir; /* ditto */
456 : __s16 wheel_accumulated; /* hi-res wheel */
457 : };
458 :
459 : struct hid_input;
460 :
461 : struct hid_field {
462 : unsigned physical; /* physical usage for this field */
463 : unsigned logical; /* logical usage for this field */
464 : unsigned application; /* application usage for this field */
465 : struct hid_usage *usage; /* usage table for this function */
466 : unsigned maxusage; /* maximum usage index */
467 : unsigned flags; /* main-item flags (i.e. volatile,array,constant) */
468 : unsigned report_offset; /* bit offset in the report */
469 : unsigned report_size; /* size of this field in the report */
470 : unsigned report_count; /* number of this field in the report */
471 : unsigned report_type; /* (input,output,feature) */
472 : __s32 *value; /* last known value(s) */
473 : __s32 *new_value; /* newly read value(s) */
474 : __s32 *usages_priorities; /* priority of each usage when reading the report
475 : * bits 8-16 are reserved for hid-input usage
476 : */
477 : __s32 logical_minimum;
478 : __s32 logical_maximum;
479 : __s32 physical_minimum;
480 : __s32 physical_maximum;
481 : __s32 unit_exponent;
482 : unsigned unit;
483 : bool ignored; /* this field is ignored in this event */
484 : struct hid_report *report; /* associated report */
485 : unsigned index; /* index into report->field[] */
486 : /* hidinput data */
487 : struct hid_input *hidinput; /* associated input structure */
488 : __u16 dpad; /* dpad input code */
489 : unsigned int slot_idx; /* slot index in a report */
490 : };
491 :
492 : #define HID_MAX_FIELDS 256
493 :
494 : struct hid_field_entry {
495 : struct list_head list;
496 : struct hid_field *field;
497 : unsigned int index;
498 : __s32 priority;
499 : };
500 :
501 : struct hid_report {
502 : struct list_head list;
503 : struct list_head hidinput_list;
504 : struct list_head field_entry_list; /* ordered list of input fields */
505 : unsigned int id; /* id of this report */
506 : enum hid_report_type type; /* report type */
507 : unsigned int application; /* application usage for this report */
508 : struct hid_field *field[HID_MAX_FIELDS]; /* fields of the report */
509 : struct hid_field_entry *field_entries; /* allocated memory of input field_entry */
510 : unsigned maxfield; /* maximum valid field index */
511 : unsigned size; /* size of the report (bits) */
512 : struct hid_device *device; /* associated device */
513 :
514 : /* tool related state */
515 : bool tool_active; /* whether the current tool is active */
516 : unsigned int tool; /* BTN_TOOL_* */
517 : };
518 :
519 : #define HID_MAX_IDS 256
520 :
521 : struct hid_report_enum {
522 : unsigned numbered;
523 : struct list_head report_list;
524 : struct hid_report *report_id_hash[HID_MAX_IDS];
525 : };
526 :
527 : #define HID_MIN_BUFFER_SIZE 64 /* make sure there is at least a packet size of space */
528 : #define HID_MAX_BUFFER_SIZE 16384 /* 16kb */
529 : #define HID_CONTROL_FIFO_SIZE 256 /* to init devices with >100 reports */
530 : #define HID_OUTPUT_FIFO_SIZE 64
531 :
532 : struct hid_control_fifo {
533 : unsigned char dir;
534 : struct hid_report *report;
535 : char *raw_report;
536 : };
537 :
538 : struct hid_output_fifo {
539 : struct hid_report *report;
540 : char *raw_report;
541 : };
542 :
543 : #define HID_CLAIMED_INPUT BIT(0)
544 : #define HID_CLAIMED_HIDDEV BIT(1)
545 : #define HID_CLAIMED_HIDRAW BIT(2)
546 : #define HID_CLAIMED_DRIVER BIT(3)
547 :
548 : #define HID_STAT_ADDED BIT(0)
549 : #define HID_STAT_PARSED BIT(1)
550 : #define HID_STAT_DUP_DETECTED BIT(2)
551 : #define HID_STAT_REPROBED BIT(3)
552 :
553 : struct hid_input {
554 : struct list_head list;
555 : struct hid_report *report;
556 : struct input_dev *input;
557 : const char *name;
558 : bool registered;
559 : struct list_head reports; /* the list of reports */
560 : unsigned int application; /* application usage for this input */
561 : };
562 :
563 : enum hid_type {
564 : HID_TYPE_OTHER = 0,
565 : HID_TYPE_USBMOUSE,
566 : HID_TYPE_USBNONE
567 : };
568 :
569 : enum hid_battery_status {
570 : HID_BATTERY_UNKNOWN = 0,
571 : HID_BATTERY_QUERIED, /* Kernel explicitly queried battery strength */
572 : HID_BATTERY_REPORTED, /* Device sent unsolicited battery strength report */
573 : };
574 :
575 : struct hid_driver;
576 : struct hid_ll_driver;
577 :
578 : struct hid_device { /* device report descriptor */
579 : __u8 *dev_rdesc;
580 : unsigned dev_rsize;
581 : __u8 *rdesc;
582 : unsigned rsize;
583 : struct hid_collection *collection; /* List of HID collections */
584 : unsigned collection_size; /* Number of allocated hid_collections */
585 : unsigned maxcollection; /* Number of parsed collections */
586 : unsigned maxapplication; /* Number of applications */
587 : __u16 bus; /* BUS ID */
588 : __u16 group; /* Report group */
589 : __u32 vendor; /* Vendor ID */
590 : __u32 product; /* Product ID */
591 : __u32 version; /* HID version */
592 : enum hid_type type; /* device type (mouse, kbd, ...) */
593 : unsigned country; /* HID country */
594 : struct hid_report_enum report_enum[HID_REPORT_TYPES];
595 : struct work_struct led_work; /* delayed LED worker */
596 :
597 : struct semaphore driver_input_lock; /* protects the current driver */
598 : struct device dev; /* device */
599 : struct hid_driver *driver;
600 :
601 : const struct hid_ll_driver *ll_driver;
602 : struct mutex ll_open_lock;
603 : unsigned int ll_open_count;
604 :
605 : #ifdef CONFIG_HID_BATTERY_STRENGTH
606 : /*
607 : * Power supply information for HID devices which report
608 : * battery strength. power_supply was successfully registered if
609 : * battery is non-NULL.
610 : */
611 : struct power_supply *battery;
612 : __s32 battery_capacity;
613 : __s32 battery_min;
614 : __s32 battery_max;
615 : __s32 battery_report_type;
616 : __s32 battery_report_id;
617 : __s32 battery_charge_status;
618 : enum hid_battery_status battery_status;
619 : bool battery_avoid_query;
620 : ktime_t battery_ratelimit_time;
621 : #endif
622 :
623 : unsigned long status; /* see STAT flags above */
624 : unsigned claimed; /* Claimed by hidinput, hiddev? */
625 : unsigned quirks; /* Various quirks the device can pull on us */
626 : unsigned initial_quirks; /* Initial set of quirks supplied when creating device */
627 : bool io_started; /* If IO has started */
628 :
629 : struct list_head inputs; /* The list of inputs */
630 : void *hiddev; /* The hiddev structure */
631 : void *hidraw;
632 :
633 : char name[128]; /* Device name */
634 : char phys[64]; /* Device physical location */
635 : char uniq[64]; /* Device unique identifier (serial #) */
636 :
637 : void *driver_data;
638 :
639 : /* temporary hid_ff handling (until moved to the drivers) */
640 : int (*ff_init)(struct hid_device *);
641 :
642 : /* hiddev event handler */
643 : int (*hiddev_connect)(struct hid_device *, unsigned int);
644 : void (*hiddev_disconnect)(struct hid_device *);
645 : void (*hiddev_hid_event) (struct hid_device *, struct hid_field *field,
646 : struct hid_usage *, __s32);
647 : void (*hiddev_report_event) (struct hid_device *, struct hid_report *);
648 :
649 : /* debugging support via debugfs */
650 : unsigned short debug;
651 : struct dentry *debug_dir;
652 : struct dentry *debug_rdesc;
653 : struct dentry *debug_events;
654 : struct list_head debug_list;
655 : spinlock_t debug_list_lock;
656 : wait_queue_head_t debug_wait;
657 :
658 : unsigned int id; /* system unique id */
659 :
660 : #ifdef CONFIG_BPF
661 : struct hid_bpf bpf; /* hid-bpf data */
662 : #endif /* CONFIG_BPF */
663 : };
664 :
665 : #define to_hid_device(pdev) \
666 : container_of(pdev, struct hid_device, dev)
667 :
668 : static inline void *hid_get_drvdata(struct hid_device *hdev)
669 : {
670 0 : return dev_get_drvdata(&hdev->dev);
671 : }
672 :
673 : static inline void hid_set_drvdata(struct hid_device *hdev, void *data)
674 : {
675 0 : dev_set_drvdata(&hdev->dev, data);
676 : }
677 :
678 : #define HID_GLOBAL_STACK_SIZE 4
679 : #define HID_COLLECTION_STACK_SIZE 4
680 :
681 : #define HID_SCAN_FLAG_MT_WIN_8 BIT(0)
682 : #define HID_SCAN_FLAG_VENDOR_SPECIFIC BIT(1)
683 : #define HID_SCAN_FLAG_GD_POINTER BIT(2)
684 :
685 : struct hid_parser {
686 : struct hid_global global;
687 : struct hid_global global_stack[HID_GLOBAL_STACK_SIZE];
688 : unsigned int global_stack_ptr;
689 : struct hid_local local;
690 : unsigned int *collection_stack;
691 : unsigned int collection_stack_ptr;
692 : unsigned int collection_stack_size;
693 : struct hid_device *device;
694 : unsigned int scan_flags;
695 : };
696 :
697 : struct hid_class_descriptor {
698 : __u8 bDescriptorType;
699 : __le16 wDescriptorLength;
700 : } __attribute__ ((packed));
701 :
702 : struct hid_descriptor {
703 : __u8 bLength;
704 : __u8 bDescriptorType;
705 : __le16 bcdHID;
706 : __u8 bCountryCode;
707 : __u8 bNumDescriptors;
708 :
709 : struct hid_class_descriptor desc[1];
710 : } __attribute__ ((packed));
711 :
712 : #define HID_DEVICE(b, g, ven, prod) \
713 : .bus = (b), .group = (g), .vendor = (ven), .product = (prod)
714 : #define HID_USB_DEVICE(ven, prod) \
715 : .bus = BUS_USB, .vendor = (ven), .product = (prod)
716 : #define HID_BLUETOOTH_DEVICE(ven, prod) \
717 : .bus = BUS_BLUETOOTH, .vendor = (ven), .product = (prod)
718 : #define HID_I2C_DEVICE(ven, prod) \
719 : .bus = BUS_I2C, .vendor = (ven), .product = (prod)
720 :
721 : #define HID_REPORT_ID(rep) \
722 : .report_type = (rep)
723 : #define HID_USAGE_ID(uhid, utype, ucode) \
724 : .usage_hid = (uhid), .usage_type = (utype), .usage_code = (ucode)
725 : /* we don't want to catch types and codes equal to 0 */
726 : #define HID_TERMINATOR (HID_ANY_ID - 1)
727 :
728 : struct hid_report_id {
729 : __u32 report_type;
730 : };
731 : struct hid_usage_id {
732 : __u32 usage_hid;
733 : __u32 usage_type;
734 : __u32 usage_code;
735 : };
736 :
737 : /**
738 : * struct hid_driver
739 : * @name: driver name (e.g. "Footech_bar-wheel")
740 : * @id_table: which devices is this driver for (must be non-NULL for probe
741 : * to be called)
742 : * @dyn_list: list of dynamically added device ids
743 : * @dyn_lock: lock protecting @dyn_list
744 : * @match: check if the given device is handled by this driver
745 : * @probe: new device inserted
746 : * @remove: device removed (NULL if not a hot-plug capable driver)
747 : * @report_table: on which reports to call raw_event (NULL means all)
748 : * @raw_event: if report in report_table, this hook is called (NULL means nop)
749 : * @usage_table: on which events to call event (NULL means all)
750 : * @event: if usage in usage_table, this hook is called (NULL means nop)
751 : * @report: this hook is called after parsing a report (NULL means nop)
752 : * @report_fixup: called before report descriptor parsing (NULL means nop)
753 : * @input_mapping: invoked on input registering before mapping an usage
754 : * @input_mapped: invoked on input registering after mapping an usage
755 : * @input_configured: invoked just before the device is registered
756 : * @feature_mapping: invoked on feature registering
757 : * @suspend: invoked on suspend (NULL means nop)
758 : * @resume: invoked on resume if device was not reset (NULL means nop)
759 : * @reset_resume: invoked on resume if device was reset (NULL means nop)
760 : *
761 : * probe should return -errno on error, or 0 on success. During probe,
762 : * input will not be passed to raw_event unless hid_device_io_start is
763 : * called.
764 : *
765 : * raw_event and event should return negative on error, any other value will
766 : * pass the event on to .event() typically return 0 for success.
767 : *
768 : * input_mapping shall return a negative value to completely ignore this usage
769 : * (e.g. doubled or invalid usage), zero to continue with parsing of this
770 : * usage by generic code (no special handling needed) or positive to skip
771 : * generic parsing (needed special handling which was done in the hook already)
772 : * input_mapped shall return negative to inform the layer that this usage
773 : * should not be considered for further processing or zero to notify that
774 : * no processing was performed and should be done in a generic manner
775 : * Both these functions may be NULL which means the same behavior as returning
776 : * zero from them.
777 : */
778 : struct hid_driver {
779 : char *name;
780 : const struct hid_device_id *id_table;
781 :
782 : struct list_head dyn_list;
783 : spinlock_t dyn_lock;
784 :
785 : bool (*match)(struct hid_device *dev, bool ignore_special_driver);
786 : int (*probe)(struct hid_device *dev, const struct hid_device_id *id);
787 : void (*remove)(struct hid_device *dev);
788 :
789 : const struct hid_report_id *report_table;
790 : int (*raw_event)(struct hid_device *hdev, struct hid_report *report,
791 : u8 *data, int size);
792 : const struct hid_usage_id *usage_table;
793 : int (*event)(struct hid_device *hdev, struct hid_field *field,
794 : struct hid_usage *usage, __s32 value);
795 : void (*report)(struct hid_device *hdev, struct hid_report *report);
796 :
797 : __u8 *(*report_fixup)(struct hid_device *hdev, __u8 *buf,
798 : unsigned int *size);
799 :
800 : int (*input_mapping)(struct hid_device *hdev,
801 : struct hid_input *hidinput, struct hid_field *field,
802 : struct hid_usage *usage, unsigned long **bit, int *max);
803 : int (*input_mapped)(struct hid_device *hdev,
804 : struct hid_input *hidinput, struct hid_field *field,
805 : struct hid_usage *usage, unsigned long **bit, int *max);
806 : int (*input_configured)(struct hid_device *hdev,
807 : struct hid_input *hidinput);
808 : void (*feature_mapping)(struct hid_device *hdev,
809 : struct hid_field *field,
810 : struct hid_usage *usage);
811 : #ifdef CONFIG_PM
812 : int (*suspend)(struct hid_device *hdev, pm_message_t message);
813 : int (*resume)(struct hid_device *hdev);
814 : int (*reset_resume)(struct hid_device *hdev);
815 : #endif
816 : /* private: */
817 : struct device_driver driver;
818 : };
819 :
820 : #define to_hid_driver(pdrv) \
821 : container_of(pdrv, struct hid_driver, driver)
822 :
823 : /**
824 : * struct hid_ll_driver - low level driver callbacks
825 : * @start: called on probe to start the device
826 : * @stop: called on remove
827 : * @open: called by input layer on open
828 : * @close: called by input layer on close
829 : * @power: request underlying hardware to enter requested power mode
830 : * @parse: this method is called only once to parse the device data,
831 : * shouldn't allocate anything to not leak memory
832 : * @request: send report request to device (e.g. feature report)
833 : * @wait: wait for buffered io to complete (send/recv reports)
834 : * @raw_request: send raw report request to device (e.g. feature report)
835 : * @output_report: send output report to device
836 : * @idle: send idle request to device
837 : * @may_wakeup: return if device may act as a wakeup source during system-suspend
838 : * @max_buffer_size: over-ride maximum data buffer size (default: HID_MAX_BUFFER_SIZE)
839 : */
840 : struct hid_ll_driver {
841 : int (*start)(struct hid_device *hdev);
842 : void (*stop)(struct hid_device *hdev);
843 :
844 : int (*open)(struct hid_device *hdev);
845 : void (*close)(struct hid_device *hdev);
846 :
847 : int (*power)(struct hid_device *hdev, int level);
848 :
849 : int (*parse)(struct hid_device *hdev);
850 :
851 : void (*request)(struct hid_device *hdev,
852 : struct hid_report *report, int reqtype);
853 :
854 : int (*wait)(struct hid_device *hdev);
855 :
856 : int (*raw_request) (struct hid_device *hdev, unsigned char reportnum,
857 : __u8 *buf, size_t len, unsigned char rtype,
858 : int reqtype);
859 :
860 : int (*output_report) (struct hid_device *hdev, __u8 *buf, size_t len);
861 :
862 : int (*idle)(struct hid_device *hdev, int report, int idle, int reqtype);
863 : bool (*may_wakeup)(struct hid_device *hdev);
864 :
865 : unsigned int max_buffer_size;
866 : };
867 :
868 : extern bool hid_is_usb(const struct hid_device *hdev);
869 :
870 : #define PM_HINT_FULLON 1<<5
871 : #define PM_HINT_NORMAL 1<<1
872 :
873 : /* Applications from HID Usage Tables 4/8/99 Version 1.1 */
874 : /* We ignore a few input applications that are not widely used */
875 : #define IS_INPUT_APPLICATION(a) \
876 : (((a >= HID_UP_GENDESK) && (a <= HID_GD_MULTIAXIS)) \
877 : || ((a >= HID_DG_DIGITIZER) && (a <= HID_DG_WHITEBOARD)) \
878 : || (a == HID_GD_SYSTEM_CONTROL) || (a == HID_CP_CONSUMER_CONTROL) \
879 : || (a == HID_GD_WIRELESS_RADIO_CTLS))
880 :
881 : /* HID core API */
882 :
883 : extern bool hid_ignore(struct hid_device *);
884 : extern int hid_add_device(struct hid_device *);
885 : extern void hid_destroy_device(struct hid_device *);
886 :
887 : extern struct bus_type hid_bus_type;
888 :
889 : extern int __must_check __hid_register_driver(struct hid_driver *,
890 : struct module *, const char *mod_name);
891 :
892 : /* use a define to avoid include chaining to get THIS_MODULE & friends */
893 : #define hid_register_driver(driver) \
894 : __hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
895 :
896 : extern void hid_unregister_driver(struct hid_driver *);
897 :
898 : /**
899 : * module_hid_driver() - Helper macro for registering a HID driver
900 : * @__hid_driver: hid_driver struct
901 : *
902 : * Helper macro for HID drivers which do not do anything special in module
903 : * init/exit. This eliminates a lot of boilerplate. Each module may only
904 : * use this macro once, and calling it replaces module_init() and module_exit()
905 : */
906 : #define module_hid_driver(__hid_driver) \
907 : module_driver(__hid_driver, hid_register_driver, \
908 : hid_unregister_driver)
909 :
910 : extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32);
911 : extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report);
912 : extern int hidinput_connect(struct hid_device *hid, unsigned int force);
913 : extern void hidinput_disconnect(struct hid_device *);
914 :
915 : int hid_set_field(struct hid_field *, unsigned, __s32);
916 : int hid_input_report(struct hid_device *hid, enum hid_report_type type, u8 *data, u32 size,
917 : int interrupt);
918 : struct hid_field *hidinput_get_led_field(struct hid_device *hid);
919 : unsigned int hidinput_count_leds(struct hid_device *hid);
920 : __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code);
921 : void hid_output_report(struct hid_report *report, __u8 *data);
922 : int __hid_request(struct hid_device *hid, struct hid_report *rep, enum hid_class_request reqtype);
923 : u8 *hid_alloc_report_buf(struct hid_report *report, gfp_t flags);
924 : struct hid_device *hid_allocate_device(void);
925 : struct hid_report *hid_register_report(struct hid_device *device,
926 : enum hid_report_type type, unsigned int id,
927 : unsigned int application);
928 : int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size);
929 : struct hid_report *hid_validate_values(struct hid_device *hid,
930 : enum hid_report_type type, unsigned int id,
931 : unsigned int field_index,
932 : unsigned int report_counts);
933 :
934 : void hid_setup_resolution_multiplier(struct hid_device *hid);
935 : int hid_open_report(struct hid_device *device);
936 : int hid_check_keys_pressed(struct hid_device *hid);
937 : int hid_connect(struct hid_device *hid, unsigned int connect_mask);
938 : void hid_disconnect(struct hid_device *hid);
939 : bool hid_match_one_id(const struct hid_device *hdev,
940 : const struct hid_device_id *id);
941 : const struct hid_device_id *hid_match_id(const struct hid_device *hdev,
942 : const struct hid_device_id *id);
943 : const struct hid_device_id *hid_match_device(struct hid_device *hdev,
944 : struct hid_driver *hdrv);
945 : bool hid_compare_device_paths(struct hid_device *hdev_a,
946 : struct hid_device *hdev_b, char separator);
947 : s32 hid_snto32(__u32 value, unsigned n);
948 : __u32 hid_field_extract(const struct hid_device *hid, __u8 *report,
949 : unsigned offset, unsigned n);
950 :
951 : #ifdef CONFIG_PM
952 : int hid_driver_suspend(struct hid_device *hdev, pm_message_t state);
953 : int hid_driver_reset_resume(struct hid_device *hdev);
954 : int hid_driver_resume(struct hid_device *hdev);
955 : #else
956 : static inline int hid_driver_suspend(struct hid_device *hdev, pm_message_t state) { return 0; }
957 : static inline int hid_driver_reset_resume(struct hid_device *hdev) { return 0; }
958 : static inline int hid_driver_resume(struct hid_device *hdev) { return 0; }
959 : #endif
960 :
961 : /**
962 : * hid_device_io_start - enable HID input during probe, remove
963 : *
964 : * @hid: the device
965 : *
966 : * This should only be called during probe or remove and only be
967 : * called by the thread calling probe or remove. It will allow
968 : * incoming packets to be delivered to the driver.
969 : */
970 : static inline void hid_device_io_start(struct hid_device *hid) {
971 : if (hid->io_started) {
972 : dev_warn(&hid->dev, "io already started\n");
973 : return;
974 : }
975 : hid->io_started = true;
976 : up(&hid->driver_input_lock);
977 : }
978 :
979 : /**
980 : * hid_device_io_stop - disable HID input during probe, remove
981 : *
982 : * @hid: the device
983 : *
984 : * Should only be called after hid_device_io_start. It will prevent
985 : * incoming packets from going to the driver for the duration of
986 : * probe, remove. If called during probe, packets will still go to the
987 : * driver after probe is complete. This function should only be called
988 : * by the thread calling probe or remove.
989 : */
990 : static inline void hid_device_io_stop(struct hid_device *hid) {
991 : if (!hid->io_started) {
992 : dev_warn(&hid->dev, "io already stopped\n");
993 : return;
994 : }
995 : hid->io_started = false;
996 : down(&hid->driver_input_lock);
997 : }
998 :
999 : /**
1000 : * hid_map_usage - map usage input bits
1001 : *
1002 : * @hidinput: hidinput which we are interested in
1003 : * @usage: usage to fill in
1004 : * @bit: pointer to input->{}bit (out parameter)
1005 : * @max: maximal valid usage->code to consider later (out parameter)
1006 : * @type: input event type (EV_KEY, EV_REL, ...)
1007 : * @c: code which corresponds to this usage and type
1008 : *
1009 : * The value pointed to by @bit will be set to NULL if either @type is
1010 : * an unhandled event type, or if @c is out of range for @type. This
1011 : * can be used as an error condition.
1012 : */
1013 0 : static inline void hid_map_usage(struct hid_input *hidinput,
1014 : struct hid_usage *usage, unsigned long **bit, int *max,
1015 : __u8 type, unsigned int c)
1016 : {
1017 0 : struct input_dev *input = hidinput->input;
1018 0 : unsigned long *bmap = NULL;
1019 0 : unsigned int limit = 0;
1020 :
1021 0 : switch (type) {
1022 : case EV_ABS:
1023 0 : bmap = input->absbit;
1024 0 : limit = ABS_MAX;
1025 0 : break;
1026 : case EV_REL:
1027 0 : bmap = input->relbit;
1028 0 : limit = REL_MAX;
1029 0 : break;
1030 : case EV_KEY:
1031 0 : bmap = input->keybit;
1032 0 : limit = KEY_MAX;
1033 0 : break;
1034 : case EV_LED:
1035 0 : bmap = input->ledbit;
1036 0 : limit = LED_MAX;
1037 0 : break;
1038 : case EV_MSC:
1039 0 : bmap = input->mscbit;
1040 0 : limit = MSC_MAX;
1041 0 : break;
1042 : }
1043 :
1044 0 : if (unlikely(c > limit || !bmap)) {
1045 0 : pr_warn_ratelimited("%s: Invalid code %d type %d\n",
1046 : input->name, c, type);
1047 0 : *bit = NULL;
1048 0 : return;
1049 : }
1050 :
1051 0 : usage->type = type;
1052 0 : usage->code = c;
1053 0 : *max = limit;
1054 0 : *bit = bmap;
1055 : }
1056 :
1057 : /**
1058 : * hid_map_usage_clear - map usage input bits and clear the input bit
1059 : *
1060 : * @hidinput: hidinput which we are interested in
1061 : * @usage: usage to fill in
1062 : * @bit: pointer to input->{}bit (out parameter)
1063 : * @max: maximal valid usage->code to consider later (out parameter)
1064 : * @type: input event type (EV_KEY, EV_REL, ...)
1065 : * @c: code which corresponds to this usage and type
1066 : *
1067 : * The same as hid_map_usage, except the @c bit is also cleared in supported
1068 : * bits (@bit).
1069 : */
1070 0 : static inline void hid_map_usage_clear(struct hid_input *hidinput,
1071 : struct hid_usage *usage, unsigned long **bit, int *max,
1072 : __u8 type, __u16 c)
1073 : {
1074 0 : hid_map_usage(hidinput, usage, bit, max, type, c);
1075 0 : if (*bit)
1076 0 : clear_bit(usage->code, *bit);
1077 0 : }
1078 :
1079 : /**
1080 : * hid_parse - parse HW reports
1081 : *
1082 : * @hdev: hid device
1083 : *
1084 : * Call this from probe after you set up the device (if needed). Your
1085 : * report_fixup will be called (if non-NULL) after reading raw report from
1086 : * device before passing it to hid layer for real parsing.
1087 : */
1088 : static inline int __must_check hid_parse(struct hid_device *hdev)
1089 : {
1090 0 : return hid_open_report(hdev);
1091 : }
1092 :
1093 : int __must_check hid_hw_start(struct hid_device *hdev,
1094 : unsigned int connect_mask);
1095 : void hid_hw_stop(struct hid_device *hdev);
1096 : int __must_check hid_hw_open(struct hid_device *hdev);
1097 : void hid_hw_close(struct hid_device *hdev);
1098 : void hid_hw_request(struct hid_device *hdev,
1099 : struct hid_report *report, enum hid_class_request reqtype);
1100 : int hid_hw_raw_request(struct hid_device *hdev,
1101 : unsigned char reportnum, __u8 *buf,
1102 : size_t len, enum hid_report_type rtype,
1103 : enum hid_class_request reqtype);
1104 : int hid_hw_output_report(struct hid_device *hdev, __u8 *buf, size_t len);
1105 :
1106 : /**
1107 : * hid_hw_power - requests underlying HW to go into given power mode
1108 : *
1109 : * @hdev: hid device
1110 : * @level: requested power level (one of %PM_HINT_* defines)
1111 : *
1112 : * This function requests underlying hardware to enter requested power
1113 : * mode.
1114 : */
1115 :
1116 : static inline int hid_hw_power(struct hid_device *hdev, int level)
1117 : {
1118 : return hdev->ll_driver->power ? hdev->ll_driver->power(hdev, level) : 0;
1119 : }
1120 :
1121 :
1122 : /**
1123 : * hid_hw_idle - send idle request to device
1124 : *
1125 : * @hdev: hid device
1126 : * @report: report to control
1127 : * @idle: idle state
1128 : * @reqtype: hid request type
1129 : */
1130 : static inline int hid_hw_idle(struct hid_device *hdev, int report, int idle,
1131 : enum hid_class_request reqtype)
1132 : {
1133 : if (hdev->ll_driver->idle)
1134 : return hdev->ll_driver->idle(hdev, report, idle, reqtype);
1135 :
1136 : return 0;
1137 : }
1138 :
1139 : /**
1140 : * hid_hw_may_wakeup - return if the hid device may act as a wakeup source during system-suspend
1141 : *
1142 : * @hdev: hid device
1143 : */
1144 : static inline bool hid_hw_may_wakeup(struct hid_device *hdev)
1145 : {
1146 : if (hdev->ll_driver->may_wakeup)
1147 : return hdev->ll_driver->may_wakeup(hdev);
1148 :
1149 : if (hdev->dev.parent)
1150 : return device_may_wakeup(hdev->dev.parent);
1151 :
1152 : return false;
1153 : }
1154 :
1155 : /**
1156 : * hid_hw_wait - wait for buffered io to complete
1157 : *
1158 : * @hdev: hid device
1159 : */
1160 : static inline void hid_hw_wait(struct hid_device *hdev)
1161 : {
1162 0 : if (hdev->ll_driver->wait)
1163 0 : hdev->ll_driver->wait(hdev);
1164 : }
1165 :
1166 : /**
1167 : * hid_report_len - calculate the report length
1168 : *
1169 : * @report: the report we want to know the length
1170 : */
1171 : static inline u32 hid_report_len(struct hid_report *report)
1172 : {
1173 0 : return DIV_ROUND_UP(report->size, 8) + (report->id > 0);
1174 : }
1175 :
1176 : int hid_report_raw_event(struct hid_device *hid, enum hid_report_type type, u8 *data, u32 size,
1177 : int interrupt);
1178 :
1179 : /* HID quirks API */
1180 : unsigned long hid_lookup_quirk(const struct hid_device *hdev);
1181 : int hid_quirks_init(char **quirks_param, __u16 bus, int count);
1182 : void hid_quirks_exit(__u16 bus);
1183 :
1184 : #ifdef CONFIG_HID_PID
1185 : int hid_pidff_init(struct hid_device *hid);
1186 : #else
1187 : #define hid_pidff_init NULL
1188 : #endif
1189 :
1190 : #define dbg_hid(fmt, ...) pr_debug("%s: " fmt, __FILE__, ##__VA_ARGS__)
1191 :
1192 : #define hid_err(hid, fmt, ...) \
1193 : dev_err(&(hid)->dev, fmt, ##__VA_ARGS__)
1194 : #define hid_notice(hid, fmt, ...) \
1195 : dev_notice(&(hid)->dev, fmt, ##__VA_ARGS__)
1196 : #define hid_warn(hid, fmt, ...) \
1197 : dev_warn(&(hid)->dev, fmt, ##__VA_ARGS__)
1198 : #define hid_info(hid, fmt, ...) \
1199 : dev_info(&(hid)->dev, fmt, ##__VA_ARGS__)
1200 : #define hid_dbg(hid, fmt, ...) \
1201 : dev_dbg(&(hid)->dev, fmt, ##__VA_ARGS__)
1202 :
1203 : #define hid_err_once(hid, fmt, ...) \
1204 : dev_err_once(&(hid)->dev, fmt, ##__VA_ARGS__)
1205 : #define hid_notice_once(hid, fmt, ...) \
1206 : dev_notice_once(&(hid)->dev, fmt, ##__VA_ARGS__)
1207 : #define hid_warn_once(hid, fmt, ...) \
1208 : dev_warn_once(&(hid)->dev, fmt, ##__VA_ARGS__)
1209 : #define hid_info_once(hid, fmt, ...) \
1210 : dev_info_once(&(hid)->dev, fmt, ##__VA_ARGS__)
1211 : #define hid_dbg_once(hid, fmt, ...) \
1212 : dev_dbg_once(&(hid)->dev, fmt, ##__VA_ARGS__)
1213 :
1214 : #endif
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