5 * Copyright (c) 1999 Andreas Gal
6 * Copyright (c) 2000-2001 Vojtech Pavlik
7 * Copyright (c) 2006-2007 Jiri Kosina
11 * This program is free software; you can redistribute it and/or modify
12 * it under the terms of the GNU General Public License as published by
13 * the Free Software Foundation; either version 2 of the License, or
14 * (at your option) any later version.
16 * This program is distributed in the hope that it will be useful,
17 * but WITHOUT ANY WARRANTY; without even the implied warranty of
18 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
19 * GNU General Public License for more details.
21 * You should have received a copy of the GNU General Public License
22 * along with this program; if not, write to the Free Software
23 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
25 * Should you need to contact me, the author, you can do so either by
26 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
27 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
31 * USB HID (Human Interface Device) interface class code
34 #define USB_INTERFACE_CLASS_HID 3
37 * USB HID interface subclass and protocol codes
40 #define USB_INTERFACE_SUBCLASS_BOOT 1
41 #define USB_INTERFACE_PROTOCOL_KEYBOARD 1
42 #define USB_INTERFACE_PROTOCOL_MOUSE 2
48 #define HID_REQ_GET_REPORT 0x01
49 #define HID_REQ_GET_IDLE 0x02
50 #define HID_REQ_GET_PROTOCOL 0x03
51 #define HID_REQ_SET_REPORT 0x09
52 #define HID_REQ_SET_IDLE 0x0A
53 #define HID_REQ_SET_PROTOCOL 0x0B
56 * HID class descriptor types
59 #define HID_DT_HID (USB_TYPE_CLASS | 0x01)
60 #define HID_DT_REPORT (USB_TYPE_CLASS | 0x02)
61 #define HID_DT_PHYSICAL (USB_TYPE_CLASS | 0x03)
63 #define HID_MAX_DESCRIPTOR_SIZE 4096
67 #include <linux/types.h>
68 #include <linux/slab.h>
69 #include <linux/list.h>
70 #include <linux/mod_devicetable.h> /* hid_device_id */
71 #include <linux/timer.h>
72 #include <linux/workqueue.h>
73 #include <linux/input.h>
74 #include <linux/semaphore.h>
75 #include <linux/power_supply.h>
78 * We parse each description item into this structure. Short items data
79 * values are expanded to 32-bit signed int, long items contain a pointer
100 * HID report item format
103 #define HID_ITEM_FORMAT_SHORT 0
104 #define HID_ITEM_FORMAT_LONG 1
107 * Special tag indicating long items
110 #define HID_ITEM_TAG_LONG 15
113 * HID report descriptor item type (prefix bit 2,3)
116 #define HID_ITEM_TYPE_MAIN 0
117 #define HID_ITEM_TYPE_GLOBAL 1
118 #define HID_ITEM_TYPE_LOCAL 2
119 #define HID_ITEM_TYPE_RESERVED 3
122 * HID report descriptor main item tags
125 #define HID_MAIN_ITEM_TAG_INPUT 8
126 #define HID_MAIN_ITEM_TAG_OUTPUT 9
127 #define HID_MAIN_ITEM_TAG_FEATURE 11
128 #define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION 10
129 #define HID_MAIN_ITEM_TAG_END_COLLECTION 12
132 * HID report descriptor main item contents
135 #define HID_MAIN_ITEM_CONSTANT 0x001
136 #define HID_MAIN_ITEM_VARIABLE 0x002
137 #define HID_MAIN_ITEM_RELATIVE 0x004
138 #define HID_MAIN_ITEM_WRAP 0x008
139 #define HID_MAIN_ITEM_NONLINEAR 0x010
140 #define HID_MAIN_ITEM_NO_PREFERRED 0x020
141 #define HID_MAIN_ITEM_NULL_STATE 0x040
142 #define HID_MAIN_ITEM_VOLATILE 0x080
143 #define HID_MAIN_ITEM_BUFFERED_BYTE 0x100
146 * HID report descriptor collection item types
149 #define HID_COLLECTION_PHYSICAL 0
150 #define HID_COLLECTION_APPLICATION 1
151 #define HID_COLLECTION_LOGICAL 2
154 * HID report descriptor global item tags
157 #define HID_GLOBAL_ITEM_TAG_USAGE_PAGE 0
158 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM 1
159 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM 2
160 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM 3
161 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM 4
162 #define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT 5
163 #define HID_GLOBAL_ITEM_TAG_UNIT 6
164 #define HID_GLOBAL_ITEM_TAG_REPORT_SIZE 7
165 #define HID_GLOBAL_ITEM_TAG_REPORT_ID 8
166 #define HID_GLOBAL_ITEM_TAG_REPORT_COUNT 9
167 #define HID_GLOBAL_ITEM_TAG_PUSH 10
168 #define HID_GLOBAL_ITEM_TAG_POP 11
171 * HID report descriptor local item tags
174 #define HID_LOCAL_ITEM_TAG_USAGE 0
175 #define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM 1
176 #define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM 2
177 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX 3
178 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM 4
179 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM 5
180 #define HID_LOCAL_ITEM_TAG_STRING_INDEX 7
181 #define HID_LOCAL_ITEM_TAG_STRING_MINIMUM 8
182 #define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM 9
183 #define HID_LOCAL_ITEM_TAG_DELIMITER 10
189 #define HID_USAGE_PAGE 0xffff0000
191 #define HID_UP_UNDEFINED 0x00000000
192 #define HID_UP_GENDESK 0x00010000
193 #define HID_UP_SIMULATION 0x00020000
194 #define HID_UP_GENDEVCTRLS 0x00060000
195 #define HID_UP_KEYBOARD 0x00070000
196 #define HID_UP_LED 0x00080000
197 #define HID_UP_BUTTON 0x00090000
198 #define HID_UP_ORDINAL 0x000a0000
199 #define HID_UP_CONSUMER 0x000c0000
200 #define HID_UP_DIGITIZER 0x000d0000
201 #define HID_UP_PID 0x000f0000
202 #define HID_UP_HPVENDOR 0xff7f0000
203 #define HID_UP_MSVENDOR 0xff000000
204 #define HID_UP_CUSTOM 0x00ff0000
205 #define HID_UP_LOGIVENDOR 0xffbc0000
207 #define HID_USAGE 0x0000ffff
209 #define HID_GD_POINTER 0x00010001
210 #define HID_GD_MOUSE 0x00010002
211 #define HID_GD_JOYSTICK 0x00010004
212 #define HID_GD_GAMEPAD 0x00010005
213 #define HID_GD_KEYBOARD 0x00010006
214 #define HID_GD_KEYPAD 0x00010007
215 #define HID_GD_MULTIAXIS 0x00010008
216 #define HID_GD_X 0x00010030
217 #define HID_GD_Y 0x00010031
218 #define HID_GD_Z 0x00010032
219 #define HID_GD_RX 0x00010033
220 #define HID_GD_RY 0x00010034
221 #define HID_GD_RZ 0x00010035
222 #define HID_GD_SLIDER 0x00010036
223 #define HID_GD_DIAL 0x00010037
224 #define HID_GD_WHEEL 0x00010038
225 #define HID_GD_HATSWITCH 0x00010039
226 #define HID_GD_BUFFER 0x0001003a
227 #define HID_GD_BYTECOUNT 0x0001003b
228 #define HID_GD_MOTION 0x0001003c
229 #define HID_GD_START 0x0001003d
230 #define HID_GD_SELECT 0x0001003e
231 #define HID_GD_VX 0x00010040
232 #define HID_GD_VY 0x00010041
233 #define HID_GD_VZ 0x00010042
234 #define HID_GD_VBRX 0x00010043
235 #define HID_GD_VBRY 0x00010044
236 #define HID_GD_VBRZ 0x00010045
237 #define HID_GD_VNO 0x00010046
238 #define HID_GD_FEATURE 0x00010047
239 #define HID_GD_UP 0x00010090
240 #define HID_GD_DOWN 0x00010091
241 #define HID_GD_RIGHT 0x00010092
242 #define HID_GD_LEFT 0x00010093
244 #define HID_DC_BATTERYSTRENGTH 0x00060020
246 #define HID_DG_DIGITIZER 0x000d0001
247 #define HID_DG_PEN 0x000d0002
248 #define HID_DG_LIGHTPEN 0x000d0003
249 #define HID_DG_TOUCHSCREEN 0x000d0004
250 #define HID_DG_TOUCHPAD 0x000d0005
251 #define HID_DG_STYLUS 0x000d0020
252 #define HID_DG_PUCK 0x000d0021
253 #define HID_DG_FINGER 0x000d0022
254 #define HID_DG_TIPPRESSURE 0x000d0030
255 #define HID_DG_BARRELPRESSURE 0x000d0031
256 #define HID_DG_INRANGE 0x000d0032
257 #define HID_DG_TOUCH 0x000d0033
258 #define HID_DG_UNTOUCH 0x000d0034
259 #define HID_DG_TAP 0x000d0035
260 #define HID_DG_TABLETFUNCTIONKEY 0x000d0039
261 #define HID_DG_PROGRAMCHANGEKEY 0x000d003a
262 #define HID_DG_INVERT 0x000d003c
263 #define HID_DG_TIPSWITCH 0x000d0042
264 #define HID_DG_TIPSWITCH2 0x000d0043
265 #define HID_DG_BARRELSWITCH 0x000d0044
266 #define HID_DG_ERASER 0x000d0045
267 #define HID_DG_TABLETPICK 0x000d0046
269 * as of May 20, 2009 the usages below are not yet in the official USB spec
270 * but are being pushed by Microsft as described in their paper "Digitizer
271 * Drivers for Windows Touch and Pen-Based Computers"
273 #define HID_DG_CONFIDENCE 0x000d0047
274 #define HID_DG_WIDTH 0x000d0048
275 #define HID_DG_HEIGHT 0x000d0049
276 #define HID_DG_CONTACTID 0x000d0051
277 #define HID_DG_INPUTMODE 0x000d0052
278 #define HID_DG_DEVICEINDEX 0x000d0053
279 #define HID_DG_CONTACTCOUNT 0x000d0054
280 #define HID_DG_CONTACTMAX 0x000d0055
283 * HID report types --- Ouch! HID spec says 1 2 3!
286 #define HID_INPUT_REPORT 0
287 #define HID_OUTPUT_REPORT 1
288 #define HID_FEATURE_REPORT 2
291 * HID connect requests
294 #define HID_CONNECT_HIDINPUT 0x01
295 #define HID_CONNECT_HIDINPUT_FORCE 0x02
296 #define HID_CONNECT_HIDRAW 0x04
297 #define HID_CONNECT_HIDDEV 0x08
298 #define HID_CONNECT_HIDDEV_FORCE 0x10
299 #define HID_CONNECT_FF 0x20
300 #define HID_CONNECT_DEFAULT (HID_CONNECT_HIDINPUT|HID_CONNECT_HIDRAW| \
301 HID_CONNECT_HIDDEV|HID_CONNECT_FF)
308 * Increase this if you need to configure more HID quirks at module load time
310 #define MAX_USBHID_BOOT_QUIRKS 4
312 #define HID_QUIRK_INVERT 0x00000001
313 #define HID_QUIRK_NOTOUCH 0x00000002
314 #define HID_QUIRK_IGNORE 0x00000004
315 #define HID_QUIRK_NOGET 0x00000008
316 #define HID_QUIRK_HIDDEV_FORCE 0x00000010
317 #define HID_QUIRK_BADPAD 0x00000020
318 #define HID_QUIRK_MULTI_INPUT 0x00000040
319 #define HID_QUIRK_HIDINPUT_FORCE 0x00000080
320 #define HID_QUIRK_MULTITOUCH 0x00000100
321 #define HID_QUIRK_SKIP_OUTPUT_REPORTS 0x00010000
322 #define HID_QUIRK_FULLSPEED_INTERVAL 0x10000000
323 #define HID_QUIRK_NO_INIT_REPORTS 0x20000000
324 #define HID_QUIRK_NO_IGNORE 0x40000000
325 #define HID_QUIRK_NO_INPUT_SYNC 0x80000000
328 * This is the global environment of the parser. This information is
329 * persistent for main-items. The global environment can be saved and
330 * restored with PUSH/POP statements.
335 __s32 logical_minimum
;
336 __s32 logical_maximum
;
337 __s32 physical_minimum
;
338 __s32 physical_maximum
;
342 unsigned report_size
;
343 unsigned report_count
;
347 * This is the local environment. It is persistent up the next main-item.
350 #define HID_MAX_USAGES 12288
351 #define HID_DEFAULT_NUM_COLLECTIONS 16
354 unsigned usage
[HID_MAX_USAGES
]; /* usage array */
355 unsigned collection_index
[HID_MAX_USAGES
]; /* collection index array */
356 unsigned usage_index
;
357 unsigned usage_minimum
;
358 unsigned delimiter_depth
;
359 unsigned delimiter_branch
;
363 * This is the collection stack. We climb up the stack to determine
364 * application and function of each field.
367 struct hid_collection
{
374 unsigned hid
; /* hid usage code */
375 unsigned collection_index
; /* index into collection array */
377 __u16 code
; /* input driver code */
378 __u8 type
; /* input driver type */
379 __s8 hat_min
; /* hat switch fun */
380 __s8 hat_max
; /* ditto */
381 __s8 hat_dir
; /* ditto */
387 unsigned physical
; /* physical usage for this field */
388 unsigned logical
; /* logical usage for this field */
389 unsigned application
; /* application usage for this field */
390 struct hid_usage
*usage
; /* usage table for this function */
391 unsigned maxusage
; /* maximum usage index */
392 unsigned flags
; /* main-item flags (i.e. volatile,array,constant) */
393 unsigned report_offset
; /* bit offset in the report */
394 unsigned report_size
; /* size of this field in the report */
395 unsigned report_count
; /* number of this field in the report */
396 unsigned report_type
; /* (input,output,feature) */
397 __s32
*value
; /* last known value(s) */
398 __s32 logical_minimum
;
399 __s32 logical_maximum
;
400 __s32 physical_minimum
;
401 __s32 physical_maximum
;
404 struct hid_report
*report
; /* associated report */
405 unsigned index
; /* index into report->field[] */
407 struct hid_input
*hidinput
; /* associated input structure */
408 __u16 dpad
; /* dpad input code */
411 #define HID_MAX_FIELDS 128
414 struct list_head list
;
415 unsigned id
; /* id of this report */
416 unsigned type
; /* report type */
417 struct hid_field
*field
[HID_MAX_FIELDS
]; /* fields of the report */
418 unsigned maxfield
; /* maximum valid field index */
419 unsigned size
; /* size of the report (bits) */
420 struct hid_device
*device
; /* associated device */
423 struct hid_report_enum
{
425 struct list_head report_list
;
426 struct hid_report
*report_id_hash
[256];
429 #define HID_REPORT_TYPES 3
431 #define HID_MIN_BUFFER_SIZE 64 /* make sure there is at least a packet size of space */
432 #define HID_MAX_BUFFER_SIZE 4096 /* 4kb */
433 #define HID_CONTROL_FIFO_SIZE 256 /* to init devices with >100 reports */
434 #define HID_OUTPUT_FIFO_SIZE 64
436 struct hid_control_fifo
{
438 struct hid_report
*report
;
442 struct hid_output_fifo
{
443 struct hid_report
*report
;
447 #define HID_CLAIMED_INPUT 1
448 #define HID_CLAIMED_HIDDEV 2
449 #define HID_CLAIMED_HIDRAW 4
451 #define HID_STAT_ADDED 1
452 #define HID_STAT_PARSED 2
455 struct list_head list
;
456 struct hid_report
*report
;
457 struct input_dev
*input
;
467 struct hid_ll_driver
;
469 struct hid_device
{ /* device report descriptor */
472 struct hid_collection
*collection
; /* List of HID collections */
473 unsigned collection_size
; /* Number of allocated hid_collections */
474 unsigned maxcollection
; /* Number of parsed collections */
475 unsigned maxapplication
; /* Number of applications */
476 __u16 bus
; /* BUS ID */
477 __u32 vendor
; /* Vendor ID */
478 __u32 product
; /* Product ID */
479 __u32 version
; /* HID version */
480 enum hid_type type
; /* device type (mouse, kbd, ...) */
481 unsigned country
; /* HID country */
482 struct hid_report_enum report_enum
[HID_REPORT_TYPES
];
484 struct semaphore driver_lock
; /* protects the current driver */
485 struct device dev
; /* device */
486 struct hid_driver
*driver
;
487 struct hid_ll_driver
*ll_driver
;
489 #ifdef CONFIG_HID_BATTERY_STRENGTH
491 * Power supply information for HID devices which report
492 * battery strength. power_supply is registered iff
493 * battery.name is non-NULL.
495 struct power_supply battery
;
498 __s32 battery_report_type
;
499 __s32 battery_report_id
;
502 unsigned int status
; /* see STAT flags above */
503 unsigned claimed
; /* Claimed by hidinput, hiddev? */
504 unsigned quirks
; /* Various quirks the device can pull on us */
506 struct list_head inputs
; /* The list of inputs */
507 void *hiddev
; /* The hiddev structure */
509 int minor
; /* Hiddev minor number */
511 int open
; /* is the device open by anyone? */
512 char name
[128]; /* Device name */
513 char phys
[64]; /* Device physical location */
514 char uniq
[64]; /* Device unique identifier (serial #) */
518 /* temporary hid_ff handling (until moved to the drivers) */
519 int (*ff_init
)(struct hid_device
*);
521 /* hiddev event handler */
522 int (*hiddev_connect
)(struct hid_device
*, unsigned int);
523 void (*hiddev_disconnect
)(struct hid_device
*);
524 void (*hiddev_hid_event
) (struct hid_device
*, struct hid_field
*field
,
525 struct hid_usage
*, __s32
);
526 void (*hiddev_report_event
) (struct hid_device
*, struct hid_report
*);
528 /* handler for raw input (Get_Report) data, used by hidraw */
529 int (*hid_get_raw_report
) (struct hid_device
*, unsigned char, __u8
*, size_t, unsigned char);
531 /* handler for raw output data, used by hidraw */
532 int (*hid_output_raw_report
) (struct hid_device
*, __u8
*, size_t, unsigned char);
534 /* debugging support via debugfs */
535 unsigned short debug
;
536 struct dentry
*debug_dir
;
537 struct dentry
*debug_rdesc
;
538 struct dentry
*debug_events
;
539 struct list_head debug_list
;
540 wait_queue_head_t debug_wait
;
543 static inline void *hid_get_drvdata(struct hid_device
*hdev
)
545 return dev_get_drvdata(&hdev
->dev
);
548 static inline void hid_set_drvdata(struct hid_device
*hdev
, void *data
)
550 dev_set_drvdata(&hdev
->dev
, data
);
553 #define HID_GLOBAL_STACK_SIZE 4
554 #define HID_COLLECTION_STACK_SIZE 4
557 struct hid_global global
;
558 struct hid_global global_stack
[HID_GLOBAL_STACK_SIZE
];
559 unsigned global_stack_ptr
;
560 struct hid_local local
;
561 unsigned collection_stack
[HID_COLLECTION_STACK_SIZE
];
562 unsigned collection_stack_ptr
;
563 struct hid_device
*device
;
566 struct hid_class_descriptor
{
567 __u8 bDescriptorType
;
568 __le16 wDescriptorLength
;
569 } __attribute__ ((packed
));
571 struct hid_descriptor
{
573 __u8 bDescriptorType
;
576 __u8 bNumDescriptors
;
578 struct hid_class_descriptor desc
[1];
579 } __attribute__ ((packed
));
581 #define HID_DEVICE(b, ven, prod) \
583 .vendor = (ven), .product = (prod)
585 #define HID_USB_DEVICE(ven, prod) HID_DEVICE(BUS_USB, ven, prod)
586 #define HID_BLUETOOTH_DEVICE(ven, prod) HID_DEVICE(BUS_BLUETOOTH, ven, prod)
588 #define HID_REPORT_ID(rep) \
590 #define HID_USAGE_ID(uhid, utype, ucode) \
591 .usage_hid = (uhid), .usage_type = (utype), .usage_code = (ucode)
592 /* we don't want to catch types and codes equal to 0 */
593 #define HID_TERMINATOR (HID_ANY_ID - 1)
595 struct hid_report_id
{
598 struct hid_usage_id
{
606 * @name: driver name (e.g. "Footech_bar-wheel")
607 * @id_table: which devices is this driver for (must be non-NULL for probe
609 * @dyn_list: list of dynamically added device ids
610 * @dyn_lock: lock protecting @dyn_list
611 * @probe: new device inserted
612 * @remove: device removed (NULL if not a hot-plug capable driver)
613 * @report_table: on which reports to call raw_event (NULL means all)
614 * @raw_event: if report in report_table, this hook is called (NULL means nop)
615 * @usage_table: on which events to call event (NULL means all)
616 * @event: if usage in usage_table, this hook is called (NULL means nop)
617 * @report_fixup: called before report descriptor parsing (NULL means nop)
618 * @input_mapping: invoked on input registering before mapping an usage
619 * @input_mapped: invoked on input registering after mapping an usage
620 * @feature_mapping: invoked on feature registering
621 * @suspend: invoked on suspend (NULL means nop)
622 * @resume: invoked on resume if device was not reset (NULL means nop)
623 * @reset_resume: invoked on resume if device was reset (NULL means nop)
625 * raw_event and event should return 0 on no action performed, 1 when no
626 * further processing should be done and negative on error
628 * input_mapping shall return a negative value to completely ignore this usage
629 * (e.g. doubled or invalid usage), zero to continue with parsing of this
630 * usage by generic code (no special handling needed) or positive to skip
631 * generic parsing (needed special handling which was done in the hook already)
632 * input_mapped shall return negative to inform the layer that this usage
633 * should not be considered for further processing or zero to notify that
634 * no processing was performed and should be done in a generic manner
635 * Both these functions may be NULL which means the same behavior as returning
640 const struct hid_device_id
*id_table
;
642 struct list_head dyn_list
;
645 int (*probe
)(struct hid_device
*dev
, const struct hid_device_id
*id
);
646 void (*remove
)(struct hid_device
*dev
);
648 const struct hid_report_id
*report_table
;
649 int (*raw_event
)(struct hid_device
*hdev
, struct hid_report
*report
,
651 const struct hid_usage_id
*usage_table
;
652 int (*event
)(struct hid_device
*hdev
, struct hid_field
*field
,
653 struct hid_usage
*usage
, __s32 value
);
655 __u8
*(*report_fixup
)(struct hid_device
*hdev
, __u8
*buf
,
658 int (*input_mapping
)(struct hid_device
*hdev
,
659 struct hid_input
*hidinput
, struct hid_field
*field
,
660 struct hid_usage
*usage
, unsigned long **bit
, int *max
);
661 int (*input_mapped
)(struct hid_device
*hdev
,
662 struct hid_input
*hidinput
, struct hid_field
*field
,
663 struct hid_usage
*usage
, unsigned long **bit
, int *max
);
664 void (*feature_mapping
)(struct hid_device
*hdev
,
665 struct hid_field
*field
,
666 struct hid_usage
*usage
);
668 int (*suspend
)(struct hid_device
*hdev
, pm_message_t message
);
669 int (*resume
)(struct hid_device
*hdev
);
670 int (*reset_resume
)(struct hid_device
*hdev
);
673 struct device_driver driver
;
677 * hid_ll_driver - low level driver callbacks
678 * @start: called on probe to start the device
679 * @stop: called on remove
680 * @open: called by input layer on open
681 * @close: called by input layer on close
682 * @hidinput_input_event: event input event (e.g. ff or leds)
683 * @parse: this method is called only once to parse the device data,
684 * shouldn't allocate anything to not leak memory
686 struct hid_ll_driver
{
687 int (*start
)(struct hid_device
*hdev
);
688 void (*stop
)(struct hid_device
*hdev
);
690 int (*open
)(struct hid_device
*hdev
);
691 void (*close
)(struct hid_device
*hdev
);
693 int (*power
)(struct hid_device
*hdev
, int level
);
695 int (*hidinput_input_event
) (struct input_dev
*idev
, unsigned int type
,
696 unsigned int code
, int value
);
698 int (*parse
)(struct hid_device
*hdev
);
701 #define PM_HINT_FULLON 1<<5
702 #define PM_HINT_NORMAL 1<<1
704 /* Applications from HID Usage Tables 4/8/99 Version 1.1 */
705 /* We ignore a few input applications that are not widely used */
706 #define IS_INPUT_APPLICATION(a) (((a >= 0x00010000) && (a <= 0x00010008)) || (a == 0x00010080) || (a == 0x000c0001) || ((a >= 0x000d0002) && (a <= 0x000d0006)))
710 extern int hid_debug
;
712 extern int hid_add_device(struct hid_device
*);
713 extern void hid_destroy_device(struct hid_device
*);
715 extern int __must_check
__hid_register_driver(struct hid_driver
*,
716 struct module
*, const char *mod_name
);
718 /* use a define to avoid include chaining to get THIS_MODULE & friends */
719 #define hid_register_driver(driver) \
720 __hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME)
722 extern void hid_unregister_driver(struct hid_driver
*);
724 extern void hidinput_hid_event(struct hid_device
*, struct hid_field
*, struct hid_usage
*, __s32
);
725 extern void hidinput_report_event(struct hid_device
*hid
, struct hid_report
*report
);
726 extern int hidinput_connect(struct hid_device
*hid
, unsigned int force
);
727 extern void hidinput_disconnect(struct hid_device
*);
729 int hid_set_field(struct hid_field
*, unsigned, __s32
);
730 int hid_input_report(struct hid_device
*, int type
, u8
*, int, int);
731 int hidinput_find_field(struct hid_device
*hid
, unsigned int type
, unsigned int code
, struct hid_field
**field
);
732 struct hid_field
*hidinput_get_led_field(struct hid_device
*hid
);
733 unsigned int hidinput_count_leds(struct hid_device
*hid
);
734 void hid_output_report(struct hid_report
*report
, __u8
*data
);
735 struct hid_device
*hid_allocate_device(void);
736 struct hid_report
*hid_register_report(struct hid_device
*device
, unsigned type
, unsigned id
);
737 int hid_parse_report(struct hid_device
*hid
, __u8
*start
, unsigned size
);
738 int hid_check_keys_pressed(struct hid_device
*hid
);
739 int hid_connect(struct hid_device
*hid
, unsigned int connect_mask
);
740 void hid_disconnect(struct hid_device
*hid
);
741 const struct hid_device_id
*hid_match_id(struct hid_device
*hdev
,
742 const struct hid_device_id
*id
);
745 * hid_map_usage - map usage input bits
747 * @hidinput: hidinput which we are interested in
748 * @usage: usage to fill in
749 * @bit: pointer to input->{}bit (out parameter)
750 * @max: maximal valid usage->code to consider later (out parameter)
751 * @type: input event type (EV_KEY, EV_REL, ...)
752 * @c: code which corresponds to this usage and type
754 static inline void hid_map_usage(struct hid_input
*hidinput
,
755 struct hid_usage
*usage
, unsigned long **bit
, int *max
,
758 struct input_dev
*input
= hidinput
->input
;
765 *bit
= input
->absbit
;
769 *bit
= input
->relbit
;
773 *bit
= input
->keybit
;
777 *bit
= input
->ledbit
;
784 * hid_map_usage_clear - map usage input bits and clear the input bit
786 * The same as hid_map_usage, except the @c bit is also cleared in supported
789 static inline void hid_map_usage_clear(struct hid_input
*hidinput
,
790 struct hid_usage
*usage
, unsigned long **bit
, int *max
,
793 hid_map_usage(hidinput
, usage
, bit
, max
, type
, c
);
798 * hid_parse - parse HW reports
802 * Call this from probe after you set up the device (if needed). Your
803 * report_fixup will be called (if non-NULL) after reading raw report from
804 * device before passing it to hid layer for real parsing.
806 static inline int __must_check
hid_parse(struct hid_device
*hdev
)
810 if (hdev
->status
& HID_STAT_PARSED
)
813 ret
= hdev
->ll_driver
->parse(hdev
);
815 hdev
->status
|= HID_STAT_PARSED
;
821 * hid_hw_start - start underlaying HW
824 * @connect_mask: which outputs to connect, see HID_CONNECT_*
826 * Call this in probe function *after* hid_parse. This will setup HW buffers
827 * and start the device (if not deffered to device open). hid_hw_stop must be
828 * called if this was successful.
830 static inline int __must_check
hid_hw_start(struct hid_device
*hdev
,
831 unsigned int connect_mask
)
833 int ret
= hdev
->ll_driver
->start(hdev
);
834 if (ret
|| !connect_mask
)
836 ret
= hid_connect(hdev
, connect_mask
);
838 hdev
->ll_driver
->stop(hdev
);
843 * hid_hw_stop - stop underlaying HW
847 * This is usually called from remove function or from probe when something
848 * failed and hid_hw_start was called already.
850 static inline void hid_hw_stop(struct hid_device
*hdev
)
852 hid_disconnect(hdev
);
853 hdev
->ll_driver
->stop(hdev
);
857 * hid_hw_open - signal underlaying HW to start delivering events
861 * Tell underlying HW to start delivering events from the device.
862 * This function should be called sometime after successful call
863 * to hid_hiw_start().
865 static inline int __must_check
hid_hw_open(struct hid_device
*hdev
)
867 return hdev
->ll_driver
->open(hdev
);
871 * hid_hw_close - signal underlaying HW to stop delivering events
875 * This function indicates that we are not interested in the events
876 * from this device anymore. Delivery of events may or may not stop,
877 * depending on the number of users still outstanding.
879 static inline void hid_hw_close(struct hid_device
*hdev
)
881 hdev
->ll_driver
->close(hdev
);
885 * hid_hw_power - requests underlying HW to go into given power mode
888 * @level: requested power level (one of %PM_HINT_* defines)
890 * This function requests underlying hardware to enter requested power
894 static inline int hid_hw_power(struct hid_device
*hdev
, int level
)
896 return hdev
->ll_driver
->power
? hdev
->ll_driver
->power(hdev
, level
) : 0;
899 void hid_report_raw_event(struct hid_device
*hid
, int type
, u8
*data
, int size
,
902 extern int hid_generic_init(void);
903 extern void hid_generic_exit(void);
906 u32
usbhid_lookup_quirk(const u16 idVendor
, const u16 idProduct
);
907 int usbhid_quirks_init(char **quirks_param
);
908 void usbhid_quirks_exit(void);
909 void usbhid_set_leds(struct hid_device
*hid
);
911 #ifdef CONFIG_HID_PID
912 int hid_pidff_init(struct hid_device
*hid
);
914 #define hid_pidff_init NULL
917 #define dbg_hid(format, arg...) \
920 printk(KERN_DEBUG "%s: " format, __FILE__, ##arg); \
923 #define hid_printk(level, hid, fmt, arg...) \
924 dev_printk(level, &(hid)->dev, fmt, ##arg)
925 #define hid_emerg(hid, fmt, arg...) \
926 dev_emerg(&(hid)->dev, fmt, ##arg)
927 #define hid_crit(hid, fmt, arg...) \
928 dev_crit(&(hid)->dev, fmt, ##arg)
929 #define hid_alert(hid, fmt, arg...) \
930 dev_alert(&(hid)->dev, fmt, ##arg)
931 #define hid_err(hid, fmt, arg...) \
932 dev_err(&(hid)->dev, fmt, ##arg)
933 #define hid_notice(hid, fmt, arg...) \
934 dev_notice(&(hid)->dev, fmt, ##arg)
935 #define hid_warn(hid, fmt, arg...) \
936 dev_warn(&(hid)->dev, fmt, ##arg)
937 #define hid_info(hid, fmt, arg...) \
938 dev_info(&(hid)->dev, fmt, ##arg)
939 #define hid_dbg(hid, fmt, arg...) \
940 dev_dbg(&(hid)->dev, fmt, ##arg)
942 #endif /* __KERNEL__ */