include/linux/hid.h - kernel/msm-4.19 - Gitiles

 #ifndef __HID_H
 #define __HID_H

 /*
  * $Id: hid.h,v 1.24 2001/12/27 10:37:41 vojtech Exp $
  *
  *  Copyright (c) 1999 Andreas Gal
  *  Copyright (c) 2000-2001 Vojtech Pavlik
  *  Copyright (c) 2006 Jiri Kosina
  */

 /*
  * This program is free software; you can redistribute it and/or modify
  * it under the terms of the GNU General Public License as published by
  * the Free Software Foundation; either version 2 of the License, or
  * (at your option) any later version.
  *
  * This program is distributed in the hope that it will be useful,
  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  * GNU General Public License for more details.
  *
  * You should have received a copy of the GNU General Public License
  * along with this program; if not, write to the Free Software
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  *
  * Should you need to contact me, the author, you can do so either by
  * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  */

 #include <linux/types.h>
 #include <linux/slab.h>
 #include <linux/list.h>
 #include <linux/timer.h>
 #include <linux/workqueue.h>
 #include <linux/input.h>

 /*
  * USB HID (Human Interface Device) interface class code
  */

 #define USB_INTERFACE_CLASS_HID		3

 /*
  * USB HID interface subclass and protocol codes
  */

 #define USB_INTERFACE_SUBCLASS_BOOT	1
 #define USB_INTERFACE_PROTOCOL_KEYBOARD	1
 #define USB_INTERFACE_PROTOCOL_MOUSE	2

 /*
  * HID class requests
  */

 #define HID_REQ_GET_REPORT		0x01
 #define HID_REQ_GET_IDLE		0x02
 #define HID_REQ_GET_PROTOCOL		0x03
 #define HID_REQ_SET_REPORT		0x09
 #define HID_REQ_SET_IDLE		0x0A
 #define HID_REQ_SET_PROTOCOL		0x0B

 /*
  * HID class descriptor types
  */

 #define HID_DT_HID			(USB_TYPE_CLASS | 0x01)
 #define HID_DT_REPORT			(USB_TYPE_CLASS | 0x02)
 #define HID_DT_PHYSICAL			(USB_TYPE_CLASS | 0x03)

 /*
  * We parse each description item into this structure. Short items data
  * values are expanded to 32-bit signed int, long items contain a pointer
  * into the data area.
  */

 struct hid_item {
 	unsigned  format;
 	__u8      size;
 	__u8      type;
 	__u8      tag;
 	union {
 	    __u8   u8;
 	    __s8   s8;
 	    __u16  u16;
 	    __s16  s16;
 	    __u32  u32;
 	    __s32  s32;
 	    __u8  *longdata;
 	} data;
 };

 /*
  * HID report item format
  */

 #define HID_ITEM_FORMAT_SHORT	0
 #define HID_ITEM_FORMAT_LONG	1

 /*
  * Special tag indicating long items
  */

 #define HID_ITEM_TAG_LONG	15

 /*
  * HID report descriptor item type (prefix bit 2,3)
  */

 #define HID_ITEM_TYPE_MAIN		0
 #define HID_ITEM_TYPE_GLOBAL		1
 #define HID_ITEM_TYPE_LOCAL		2
 #define HID_ITEM_TYPE_RESERVED		3

 /*
  * HID report descriptor main item tags
  */

 #define HID_MAIN_ITEM_TAG_INPUT			8
 #define HID_MAIN_ITEM_TAG_OUTPUT		9
 #define HID_MAIN_ITEM_TAG_FEATURE		11
 #define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION	10
 #define HID_MAIN_ITEM_TAG_END_COLLECTION	12

 /*
  * HID report descriptor main item contents
  */

 #define HID_MAIN_ITEM_CONSTANT		0x001
 #define HID_MAIN_ITEM_VARIABLE		0x002
 #define HID_MAIN_ITEM_RELATIVE		0x004
 #define HID_MAIN_ITEM_WRAP		0x008
 #define HID_MAIN_ITEM_NONLINEAR		0x010
 #define HID_MAIN_ITEM_NO_PREFERRED	0x020
 #define HID_MAIN_ITEM_NULL_STATE	0x040
 #define HID_MAIN_ITEM_VOLATILE		0x080
 #define HID_MAIN_ITEM_BUFFERED_BYTE	0x100

 /*
  * HID report descriptor collection item types
  */

 #define HID_COLLECTION_PHYSICAL		0
 #define HID_COLLECTION_APPLICATION	1
 #define HID_COLLECTION_LOGICAL		2

 /*
  * HID report descriptor global item tags
  */

 #define HID_GLOBAL_ITEM_TAG_USAGE_PAGE		0
 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM	1
 #define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM	2
 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM	3
 #define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM	4
 #define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT	5
 #define HID_GLOBAL_ITEM_TAG_UNIT		6
 #define HID_GLOBAL_ITEM_TAG_REPORT_SIZE		7
 #define HID_GLOBAL_ITEM_TAG_REPORT_ID		8
 #define HID_GLOBAL_ITEM_TAG_REPORT_COUNT	9
 #define HID_GLOBAL_ITEM_TAG_PUSH		10
 #define HID_GLOBAL_ITEM_TAG_POP			11

 /*
  * HID report descriptor local item tags
  */

 #define HID_LOCAL_ITEM_TAG_USAGE		0
 #define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM	1
 #define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM	2
 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX	3
 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM	4
 #define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM	5
 #define HID_LOCAL_ITEM_TAG_STRING_INDEX		7
 #define HID_LOCAL_ITEM_TAG_STRING_MINIMUM	8
 #define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM	9
 #define HID_LOCAL_ITEM_TAG_DELIMITER		10

 /*
  * HID usage tables
  */

 #define HID_USAGE_PAGE		0xffff0000

 #define HID_UP_UNDEFINED	0x00000000
 #define HID_UP_GENDESK		0x00010000
 #define HID_UP_SIMULATION	0x00020000
 #define HID_UP_KEYBOARD		0x00070000
 #define HID_UP_LED		0x00080000
 #define HID_UP_BUTTON		0x00090000
 #define HID_UP_ORDINAL		0x000a0000
 #define HID_UP_CONSUMER		0x000c0000
 #define HID_UP_DIGITIZER	0x000d0000
 #define HID_UP_PID		0x000f0000
 #define HID_UP_HPVENDOR         0xff7f0000
 #define HID_UP_MSVENDOR		0xff000000
 #define HID_UP_CUSTOM		0x00ff0000
 #define HID_UP_LOGIVENDOR	0xffbc0000

 #define HID_USAGE		0x0000ffff

 #define HID_GD_POINTER		0x00010001
 #define HID_GD_MOUSE		0x00010002
 #define HID_GD_JOYSTICK		0x00010004
 #define HID_GD_GAMEPAD		0x00010005
 #define HID_GD_KEYBOARD		0x00010006
 #define HID_GD_KEYPAD		0x00010007
 #define HID_GD_MULTIAXIS	0x00010008
 #define HID_GD_X		0x00010030
 #define HID_GD_Y		0x00010031
 #define HID_GD_Z		0x00010032
 #define HID_GD_RX		0x00010033
 #define HID_GD_RY		0x00010034
 #define HID_GD_RZ		0x00010035
 #define HID_GD_SLIDER		0x00010036
 #define HID_GD_DIAL		0x00010037
 #define HID_GD_WHEEL		0x00010038
 #define HID_GD_HATSWITCH	0x00010039
 #define HID_GD_BUFFER		0x0001003a
 #define HID_GD_BYTECOUNT	0x0001003b
 #define HID_GD_MOTION		0x0001003c
 #define HID_GD_START		0x0001003d
 #define HID_GD_SELECT		0x0001003e
 #define HID_GD_VX		0x00010040
 #define HID_GD_VY		0x00010041
 #define HID_GD_VZ		0x00010042
 #define HID_GD_VBRX		0x00010043
 #define HID_GD_VBRY		0x00010044
 #define HID_GD_VBRZ		0x00010045
 #define HID_GD_VNO		0x00010046
 #define HID_GD_FEATURE		0x00010047
 #define HID_GD_UP		0x00010090
 #define HID_GD_DOWN		0x00010091
 #define HID_GD_RIGHT		0x00010092
 #define HID_GD_LEFT		0x00010093

 /*
  * HID report types --- Ouch! HID spec says 1 2 3!
  */

 #define HID_INPUT_REPORT	0
 #define HID_OUTPUT_REPORT	1
 #define HID_FEATURE_REPORT	2

 /*
  * HID device quirks.
  */

 #define HID_QUIRK_INVERT			0x00000001
 #define HID_QUIRK_NOTOUCH			0x00000002
 #define HID_QUIRK_IGNORE			0x00000004
 #define HID_QUIRK_NOGET				0x00000008
 #define HID_QUIRK_HIDDEV			0x00000010
 #define HID_QUIRK_BADPAD			0x00000020
 #define HID_QUIRK_MULTI_INPUT			0x00000040
 #define HID_QUIRK_2WHEEL_MOUSE_HACK_7		0x00000080
 #define HID_QUIRK_2WHEEL_MOUSE_HACK_5		0x00000100
 #define HID_QUIRK_2WHEEL_MOUSE_HACK_ON		0x00000200
 #define HID_QUIRK_MIGHTYMOUSE			0x00000400
 #define HID_QUIRK_CYMOTION			0x00000800
 #define HID_QUIRK_POWERBOOK_HAS_FN		0x00001000
 #define HID_QUIRK_POWERBOOK_FN_ON		0x00002000
 #define HID_QUIRK_INVERT_HWHEEL			0x00004000
 #define HID_QUIRK_POWERBOOK_ISO_KEYBOARD        0x00008000
 #define HID_QUIRK_BAD_RELATIVE_KEYS		0x00010000
 #define HID_QUIRK_SKIP_OUTPUT_REPORTS		0x00020000
 #define HID_QUIRK_IGNORE_MOUSE			0x00040000
 #define HID_QUIRK_SONY_PS3_CONTROLLER		0x00080000

 /*
  * This is the global environment of the parser. This information is
  * persistent for main-items. The global environment can be saved and
  * restored with PUSH/POP statements.
  */

 struct hid_global {
 	unsigned usage_page;
 	__s32    logical_minimum;
 	__s32    logical_maximum;
 	__s32    physical_minimum;
 	__s32    physical_maximum;
 	__s32    unit_exponent;
 	unsigned unit;
 	unsigned report_id;
 	unsigned report_size;
 	unsigned report_count;
 };

 /*
  * This is the local environment. It is persistent up the next main-item.
  */

 #define HID_MAX_DESCRIPTOR_SIZE		4096
 #define HID_MAX_USAGES			1024
 #define HID_DEFAULT_NUM_COLLECTIONS	16

 struct hid_local {
 	unsigned usage[HID_MAX_USAGES]; /* usage array */
 	unsigned collection_index[HID_MAX_USAGES]; /* collection index array */
 	unsigned usage_index;
 	unsigned usage_minimum;
 	unsigned delimiter_depth;
 	unsigned delimiter_branch;
 };

 /*
  * This is the collection stack. We climb up the stack to determine
  * application and function of each field.
  */

 struct hid_collection {
 	unsigned type;
 	unsigned usage;
 	unsigned level;
 };

 struct hid_usage {
 	unsigned  hid;			/* hid usage code */
 	unsigned  collection_index;	/* index into collection array */
 	/* hidinput data */
 	__u16     code;			/* input driver code */
 	__u8      type;			/* input driver type */
 	__s8	  hat_min;		/* hat switch fun */
 	__s8	  hat_max;		/* ditto */
 	__s8	  hat_dir;		/* ditto */
 };

 struct hid_input;

 struct hid_field {
 	unsigned  physical;		/* physical usage for this field */
 	unsigned  logical;		/* logical usage for this field */
 	unsigned  application;		/* application usage for this field */
 	struct hid_usage *usage;	/* usage table for this function */
 	unsigned  maxusage;		/* maximum usage index */
 	unsigned  flags;		/* main-item flags (i.e. volatile,array,constant) */
 	unsigned  report_offset;	/* bit offset in the report */
 	unsigned  report_size;		/* size of this field in the report */
 	unsigned  report_count;		/* number of this field in the report */
 	unsigned  report_type;		/* (input,output,feature) */
 	__s32    *value;		/* last known value(s) */
 	__s32     logical_minimum;
 	__s32     logical_maximum;
 	__s32     physical_minimum;
 	__s32     physical_maximum;
 	__s32     unit_exponent;
 	unsigned  unit;
 	struct hid_report *report;	/* associated report */
 	unsigned index;			/* index into report->field[] */
 	/* hidinput data */
 	struct hid_input *hidinput;	/* associated input structure */
 	__u16 dpad;			/* dpad input code */
 };

 #define HID_MAX_FIELDS 64

 struct hid_report {
 	struct list_head list;
 	unsigned id;					/* id of this report */
 	unsigned type;					/* report type */
 	struct hid_field *field[HID_MAX_FIELDS];	/* fields of the report */
 	unsigned maxfield;				/* maximum valid field index */
 	unsigned size;					/* size of the report (bits) */
 	struct hid_device *device;			/* associated device */
 };

 struct hid_report_enum {
 	unsigned numbered;
 	struct list_head report_list;
 	struct hid_report *report_id_hash[256];
 };

 #define HID_REPORT_TYPES 3

 #define HID_MIN_BUFFER_SIZE	64		/* make sure there is at least a packet size of space */
 #define HID_MAX_BUFFER_SIZE	4096		/* 4kb */
 #define HID_CONTROL_FIFO_SIZE	256		/* to init devices with >100 reports */
 #define HID_OUTPUT_FIFO_SIZE	64

 struct hid_control_fifo {
 	unsigned char dir;
 	struct hid_report *report;
 };

 #define HID_CLAIMED_INPUT	1
 #define HID_CLAIMED_HIDDEV	2

 #define HID_CTRL_RUNNING	1
 #define HID_OUT_RUNNING		2
 #define HID_IN_RUNNING		3
 #define HID_RESET_PENDING	4
 #define HID_SUSPENDED		5
 #define HID_CLEAR_HALT		6

 struct hid_input {
 	struct list_head list;
 	struct hid_report *report;
 	struct input_dev *input;
 };

 struct hid_device {							/* device report descriptor */
 	 __u8 *rdesc;
 	unsigned rsize;
 	struct hid_collection *collection;				/* List of HID collections */
 	unsigned collection_size;					/* Number of allocated hid_collections */
 	unsigned maxcollection;						/* Number of parsed collections */
 	unsigned maxapplication;					/* Number of applications */
 	unsigned short bus;                                             /* BUS ID */
 	unsigned short vendor;                                          /* Vendor ID */
 	unsigned short product;                                         /* Product ID */
 	unsigned version;						/* HID version */
 	unsigned country;						/* HID country */
 	struct hid_report_enum report_enum[HID_REPORT_TYPES];

 	struct device *dev;						/* device */

 	unsigned claimed;						/* Claimed by hidinput, hiddev? */
 	unsigned quirks;						/* Various quirks the device can pull on us */

 	struct list_head inputs;					/* The list of inputs */
 	void *hiddev;							/* The hiddev structure */
 	int minor;							/* Hiddev minor number */

 	wait_queue_head_t wait;						/* For sleeping */

 	int open;							/* is the device open by anyone? */
 	char name[128];							/* Device name */
 	char phys[64];							/* Device physical location */
 	char uniq[64];							/* Device unique identifier (serial #) */

 	void *driver_data;

 	/* device-specific function pointers */
 	int (*hidinput_input_event) (struct input_dev *, unsigned int, unsigned int, int);
 	int (*hid_open) (struct hid_device *);
 	void (*hid_close) (struct hid_device *);

 	/* hiddev event handler */
 	void (*hiddev_hid_event) (struct hid_device *, struct hid_field *field,
 				  struct hid_usage *, __s32);
 	void (*hiddev_report_event) (struct hid_device *, struct hid_report *);
 #ifdef CONFIG_USB_HIDINPUT_POWERBOOK
 	unsigned long pb_pressed_fn[NBITS(KEY_MAX)];
 	unsigned long pb_pressed_numlock[NBITS(KEY_MAX)];
 #endif
 };

 #define HID_GLOBAL_STACK_SIZE 4
 #define HID_COLLECTION_STACK_SIZE 4

 struct hid_parser {
 	struct hid_global     global;
 	struct hid_global     global_stack[HID_GLOBAL_STACK_SIZE];
 	unsigned              global_stack_ptr;
 	struct hid_local      local;
 	unsigned              collection_stack[HID_COLLECTION_STACK_SIZE];
 	unsigned              collection_stack_ptr;
 	struct hid_device    *device;
 };

 struct hid_class_descriptor {
 	__u8  bDescriptorType;
 	__u16 wDescriptorLength;
 } __attribute__ ((packed));

 struct hid_descriptor {
 	__u8  bLength;
 	__u8  bDescriptorType;
 	__u16 bcdHID;
 	__u8  bCountryCode;
 	__u8  bNumDescriptors;

 	struct hid_class_descriptor desc[1];
 } __attribute__ ((packed));

 /* Applications from HID Usage Tables 4/8/99 Version 1.1 */
 /* We ignore a few input applications that are not widely used */
 #define IS_INPUT_APPLICATION(a) (((a >= 0x00010000) && (a <= 0x00010008)) || (a == 0x00010080) || (a == 0x000c0001))

 /* HID core API */
 extern void hidinput_hid_event(struct hid_device *, struct hid_field *, struct hid_usage *, __s32);
 extern void hidinput_report_event(struct hid_device *hid, struct hid_report *report);
 extern int hidinput_connect(struct hid_device *);
 extern void hidinput_disconnect(struct hid_device *);

 int hid_set_field(struct hid_field *, unsigned, __s32);
 int hid_input_report(struct hid_device *, int type, u8 *, int, int);
 int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field);
 void hid_input_field(struct hid_device *hid, struct hid_field *field, __u8 *data, int interrupt);
 void hid_output_report(struct hid_report *report, __u8 *data);
 void hid_free_device(struct hid_device *device);
 struct hid_device *hid_parse_report(__u8 *start, unsigned size);

 #ifdef CONFIG_HID_FF
 int hid_ff_init(struct hid_device *hid);

 int hid_lgff_init(struct hid_device *hid);
 int hid_plff_init(struct hid_device *hid);
 int hid_tmff_init(struct hid_device *hid);
 int hid_zpff_init(struct hid_device *hid);
 #ifdef CONFIG_HID_PID
 int hid_pidff_init(struct hid_device *hid);
 #else
 static inline int hid_pidff_init(struct hid_device *hid) { return -ENODEV; }
 #endif

 #else
 static inline int hid_ff_init(struct hid_device *hid) { return -1; }
 #endif
 #ifdef DEBUG
 #define dbg(format, arg...) printk(KERN_DEBUG "%s: " format "\n" , \
 		__FILE__ , ## arg)
 #else
 #define dbg(format, arg...) do {} while (0)
 #endif

 #define err(format, arg...) printk(KERN_ERR "%s: " format "\n" , \
 		__FILE__ , ## arg)
 #endif
	#ifndef __HID_H
	#define __HID_H

	/*
	* $Id: hid.h,v 1.24 2001/12/27 10:37:41 vojtech Exp $
	*
	* Copyright (c) 1999 Andreas Gal
	* Copyright (c) 2000-2001 Vojtech Pavlik
	* Copyright (c) 2006 Jiri Kosina
	*/

	/*
	* This program is free software; you can redistribute it and/or modify
	* it under the terms of the GNU General Public License as published by
	* the Free Software Foundation; either version 2 of the License, or
	* (at your option) any later version.
	*
	* This program is distributed in the hope that it will be useful,
	* but WITHOUT ANY WARRANTY; without even the implied warranty of
	* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
	* GNU General Public License for more details.
	*
	* You should have received a copy of the GNU General Public License
	* along with this program; if not, write to the Free Software
	* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
	*
	* Should you need to contact me, the author, you can do so either by
	* e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
	* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
	*/

	#include <linux/types.h>
	#include <linux/slab.h>
	#include <linux/list.h>
	#include <linux/timer.h>
	#include <linux/workqueue.h>
	#include <linux/input.h>

	/*
	* USB HID (Human Interface Device) interface class code
	*/

	#define USB_INTERFACE_CLASS_HID 3

	/*
	* USB HID interface subclass and protocol codes
	*/

	#define USB_INTERFACE_SUBCLASS_BOOT 1
	#define USB_INTERFACE_PROTOCOL_KEYBOARD 1
	#define USB_INTERFACE_PROTOCOL_MOUSE 2

	/*
	* HID class requests
	*/

	#define HID_REQ_GET_REPORT 0x01
	#define HID_REQ_GET_IDLE 0x02
	#define HID_REQ_GET_PROTOCOL 0x03
	#define HID_REQ_SET_REPORT 0x09
	#define HID_REQ_SET_IDLE 0x0A
	#define HID_REQ_SET_PROTOCOL 0x0B

	/*
	* HID class descriptor types
	*/

	#define HID_DT_HID (USB_TYPE_CLASS \| 0x01)
	#define HID_DT_REPORT (USB_TYPE_CLASS \| 0x02)
	#define HID_DT_PHYSICAL (USB_TYPE_CLASS \| 0x03)

	/*
	* We parse each description item into this structure. Short items data
	* values are expanded to 32-bit signed int, long items contain a pointer
	* into the data area.
	*/

	struct hid_item {
	unsigned format;
	__u8 size;
	__u8 type;
	__u8 tag;
	union {
	__u8 u8;
	__s8 s8;
	__u16 u16;
	__s16 s16;
	__u32 u32;
	__s32 s32;
	__u8 *longdata;
	} data;
	};

	/*
	* HID report item format
	*/

	#define HID_ITEM_FORMAT_SHORT 0
	#define HID_ITEM_FORMAT_LONG 1

	/*
	* Special tag indicating long items
	*/

	#define HID_ITEM_TAG_LONG 15

	/*
	* HID report descriptor item type (prefix bit 2,3)
	*/

	#define HID_ITEM_TYPE_MAIN 0
	#define HID_ITEM_TYPE_GLOBAL 1
	#define HID_ITEM_TYPE_LOCAL 2
	#define HID_ITEM_TYPE_RESERVED 3

	/*
	* HID report descriptor main item tags
	*/

	#define HID_MAIN_ITEM_TAG_INPUT 8
	#define HID_MAIN_ITEM_TAG_OUTPUT 9
	#define HID_MAIN_ITEM_TAG_FEATURE 11
	#define HID_MAIN_ITEM_TAG_BEGIN_COLLECTION 10
	#define HID_MAIN_ITEM_TAG_END_COLLECTION 12

	/*
	* HID report descriptor main item contents
	*/

	#define HID_MAIN_ITEM_CONSTANT 0x001
	#define HID_MAIN_ITEM_VARIABLE 0x002
	#define HID_MAIN_ITEM_RELATIVE 0x004
	#define HID_MAIN_ITEM_WRAP 0x008
	#define HID_MAIN_ITEM_NONLINEAR 0x010
	#define HID_MAIN_ITEM_NO_PREFERRED 0x020
	#define HID_MAIN_ITEM_NULL_STATE 0x040
	#define HID_MAIN_ITEM_VOLATILE 0x080
	#define HID_MAIN_ITEM_BUFFERED_BYTE 0x100

	/*
	* HID report descriptor collection item types
	*/

	#define HID_COLLECTION_PHYSICAL 0
	#define HID_COLLECTION_APPLICATION 1
	#define HID_COLLECTION_LOGICAL 2

	/*
	* HID report descriptor global item tags
	*/

	#define HID_GLOBAL_ITEM_TAG_USAGE_PAGE 0
	#define HID_GLOBAL_ITEM_TAG_LOGICAL_MINIMUM 1
	#define HID_GLOBAL_ITEM_TAG_LOGICAL_MAXIMUM 2
	#define HID_GLOBAL_ITEM_TAG_PHYSICAL_MINIMUM 3
	#define HID_GLOBAL_ITEM_TAG_PHYSICAL_MAXIMUM 4
	#define HID_GLOBAL_ITEM_TAG_UNIT_EXPONENT 5
	#define HID_GLOBAL_ITEM_TAG_UNIT 6
	#define HID_GLOBAL_ITEM_TAG_REPORT_SIZE 7
	#define HID_GLOBAL_ITEM_TAG_REPORT_ID 8
	#define HID_GLOBAL_ITEM_TAG_REPORT_COUNT 9
	#define HID_GLOBAL_ITEM_TAG_PUSH 10
	#define HID_GLOBAL_ITEM_TAG_POP 11

	/*
	* HID report descriptor local item tags
	*/

	#define HID_LOCAL_ITEM_TAG_USAGE 0
	#define HID_LOCAL_ITEM_TAG_USAGE_MINIMUM 1
	#define HID_LOCAL_ITEM_TAG_USAGE_MAXIMUM 2
	#define HID_LOCAL_ITEM_TAG_DESIGNATOR_INDEX 3
	#define HID_LOCAL_ITEM_TAG_DESIGNATOR_MINIMUM 4
	#define HID_LOCAL_ITEM_TAG_DESIGNATOR_MAXIMUM 5
	#define HID_LOCAL_ITEM_TAG_STRING_INDEX 7
	#define HID_LOCAL_ITEM_TAG_STRING_MINIMUM 8
	#define HID_LOCAL_ITEM_TAG_STRING_MAXIMUM 9
	#define HID_LOCAL_ITEM_TAG_DELIMITER 10

	/*
	* HID usage tables
	*/

	#define HID_USAGE_PAGE 0xffff0000

	#define HID_UP_UNDEFINED 0x00000000
	#define HID_UP_GENDESK 0x00010000
	#define HID_UP_SIMULATION 0x00020000
	#define HID_UP_KEYBOARD 0x00070000
	#define HID_UP_LED 0x00080000
	#define HID_UP_BUTTON 0x00090000
	#define HID_UP_ORDINAL 0x000a0000
	#define HID_UP_CONSUMER 0x000c0000
	#define HID_UP_DIGITIZER 0x000d0000
	#define HID_UP_PID 0x000f0000
	#define HID_UP_HPVENDOR 0xff7f0000
	#define HID_UP_MSVENDOR 0xff000000
	#define HID_UP_CUSTOM 0x00ff0000
	#define HID_UP_LOGIVENDOR 0xffbc0000

	#define HID_USAGE 0x0000ffff

	#define HID_GD_POINTER 0x00010001
	#define HID_GD_MOUSE 0x00010002
	#define HID_GD_JOYSTICK 0x00010004
	#define HID_GD_GAMEPAD 0x00010005
	#define HID_GD_KEYBOARD 0x00010006
	#define HID_GD_KEYPAD 0x00010007
	#define HID_GD_MULTIAXIS 0x00010008
	#define HID_GD_X 0x00010030
	#define HID_GD_Y 0x00010031
	#define HID_GD_Z 0x00010032
	#define HID_GD_RX 0x00010033
	#define HID_GD_RY 0x00010034
	#define HID_GD_RZ 0x00010035
	#define HID_GD_SLIDER 0x00010036
	#define HID_GD_DIAL 0x00010037
	#define HID_GD_WHEEL 0x00010038
	#define HID_GD_HATSWITCH 0x00010039
	#define HID_GD_BUFFER 0x0001003a
	#define HID_GD_BYTECOUNT 0x0001003b
	#define HID_GD_MOTION 0x0001003c
	#define HID_GD_START 0x0001003d
	#define HID_GD_SELECT 0x0001003e
	#define HID_GD_VX 0x00010040
	#define HID_GD_VY 0x00010041
	#define HID_GD_VZ 0x00010042
	#define HID_GD_VBRX 0x00010043
	#define HID_GD_VBRY 0x00010044
	#define HID_GD_VBRZ 0x00010045
	#define HID_GD_VNO 0x00010046
	#define HID_GD_FEATURE 0x00010047
	#define HID_GD_UP 0x00010090
	#define HID_GD_DOWN 0x00010091
	#define HID_GD_RIGHT 0x00010092
	#define HID_GD_LEFT 0x00010093

	/*
	* HID report types --- Ouch! HID spec says 1 2 3!
	*/

	#define HID_INPUT_REPORT 0
	#define HID_OUTPUT_REPORT 1
	#define HID_FEATURE_REPORT 2

	/*
	* HID device quirks.
	*/

	#define HID_QUIRK_INVERT 0x00000001
	#define HID_QUIRK_NOTOUCH 0x00000002
	#define HID_QUIRK_IGNORE 0x00000004
	#define HID_QUIRK_NOGET 0x00000008
	#define HID_QUIRK_HIDDEV 0x00000010
	#define HID_QUIRK_BADPAD 0x00000020
	#define HID_QUIRK_MULTI_INPUT 0x00000040
	#define HID_QUIRK_2WHEEL_MOUSE_HACK_7 0x00000080
	#define HID_QUIRK_2WHEEL_MOUSE_HACK_5 0x00000100
	#define HID_QUIRK_2WHEEL_MOUSE_HACK_ON 0x00000200
	#define HID_QUIRK_MIGHTYMOUSE 0x00000400
	#define HID_QUIRK_CYMOTION 0x00000800
	#define HID_QUIRK_POWERBOOK_HAS_FN 0x00001000
	#define HID_QUIRK_POWERBOOK_FN_ON 0x00002000
	#define HID_QUIRK_INVERT_HWHEEL 0x00004000
	#define HID_QUIRK_POWERBOOK_ISO_KEYBOARD 0x00008000
	#define HID_QUIRK_BAD_RELATIVE_KEYS 0x00010000
	#define HID_QUIRK_SKIP_OUTPUT_REPORTS 0x00020000
	#define HID_QUIRK_IGNORE_MOUSE 0x00040000
	#define HID_QUIRK_SONY_PS3_CONTROLLER 0x00080000

	/*
	* This is the global environment of the parser. This information is
	* persistent for main-items. The global environment can be saved and
	* restored with PUSH/POP statements.
	*/

	struct hid_global {
	unsigned usage_page;
	__s32 logical_minimum;
	__s32 logical_maximum;
	__s32 physical_minimum;
	__s32 physical_maximum;
	__s32 unit_exponent;
	unsigned unit;
	unsigned report_id;
	unsigned report_size;
	unsigned report_count;
	};

	/*
	* This is the local environment. It is persistent up the next main-item.
	*/

	#define HID_MAX_DESCRIPTOR_SIZE 4096
	#define HID_MAX_USAGES 1024
	#define HID_DEFAULT_NUM_COLLECTIONS 16

	struct hid_local {
	unsigned usage[HID_MAX_USAGES]; /* usage array */
	unsigned collection_index[HID_MAX_USAGES]; /* collection index array */
	unsigned usage_index;
	unsigned usage_minimum;
	unsigned delimiter_depth;
	unsigned delimiter_branch;
	};

	/*
	* This is the collection stack. We climb up the stack to determine
	* application and function of each field.
	*/

	struct hid_collection {
	unsigned type;
	unsigned usage;
	unsigned level;
	};

	struct hid_usage {
	unsigned hid; /* hid usage code */
	unsigned collection_index; /* index into collection array */
	/* hidinput data */
	__u16 code; /* input driver code */
	__u8 type; /* input driver type */
	__s8 hat_min; /* hat switch fun */
	__s8 hat_max; /* ditto */
	__s8 hat_dir; /* ditto */
	};

	struct hid_input;

	struct hid_field {
	unsigned physical; /* physical usage for this field */
	unsigned logical; /* logical usage for this field */
	unsigned application; /* application usage for this field */
	struct hid_usage usage; / usage table for this function */
	unsigned maxusage; /* maximum usage index */
	unsigned flags; /* main-item flags (i.e. volatile,array,constant) */
	unsigned report_offset; /* bit offset in the report */
	unsigned report_size; /* size of this field in the report */
	unsigned report_count; /* number of this field in the report */
	unsigned report_type; /* (input,output,feature) */
	__s32 value; / last known value(s) */
	__s32 logical_minimum;
	__s32 logical_maximum;
	__s32 physical_minimum;
	__s32 physical_maximum;
	__s32 unit_exponent;
	unsigned unit;
	struct hid_report report; / associated report */
	unsigned index; /* index into report->field[] */
	/* hidinput data */
	struct hid_input hidinput; / associated input structure */
	__u16 dpad; /* dpad input code */
	};

	#define HID_MAX_FIELDS 64

	struct hid_report {
	struct list_head list;
	unsigned id; /* id of this report */
	unsigned type; /* report type */
	struct hid_field field[HID_MAX_FIELDS]; / fields of the report */
	unsigned maxfield; /* maximum valid field index */
	unsigned size; /* size of the report (bits) */
	struct hid_device device; / associated device */
	};

	struct hid_report_enum {
	unsigned numbered;
	struct list_head report_list;
	struct hid_report *report_id_hash[256];
	};

	#define HID_REPORT_TYPES 3

	#define HID_MIN_BUFFER_SIZE 64 /* make sure there is at least a packet size of space */
	#define HID_MAX_BUFFER_SIZE 4096 /* 4kb */
	#define HID_CONTROL_FIFO_SIZE 256 /* to init devices with >100 reports */
	#define HID_OUTPUT_FIFO_SIZE 64

	struct hid_control_fifo {
	unsigned char dir;
	struct hid_report *report;
	};

	#define HID_CLAIMED_INPUT 1
	#define HID_CLAIMED_HIDDEV 2

	#define HID_CTRL_RUNNING 1
	#define HID_OUT_RUNNING 2
	#define HID_IN_RUNNING 3
	#define HID_RESET_PENDING 4
	#define HID_SUSPENDED 5
	#define HID_CLEAR_HALT 6

	struct hid_input {
	struct list_head list;
	struct hid_report *report;
	struct input_dev *input;
	};

	struct hid_device { /* device report descriptor */
	__u8 *rdesc;
	unsigned rsize;
	struct hid_collection collection; / List of HID collections */
	unsigned collection_size; /* Number of allocated hid_collections */
	unsigned maxcollection; /* Number of parsed collections */
	unsigned maxapplication; /* Number of applications */
	unsigned short bus; /* BUS ID */
	unsigned short vendor; /* Vendor ID */
	unsigned short product; /* Product ID */
	unsigned version; /* HID version */
	unsigned country; /* HID country */
	struct hid_report_enum report_enum[HID_REPORT_TYPES];

	struct device dev; / device */

	unsigned claimed; /* Claimed by hidinput, hiddev? */
	unsigned quirks; /* Various quirks the device can pull on us */

	struct list_head inputs; /* The list of inputs */
	void hiddev; / The hiddev structure */
	int minor; /* Hiddev minor number */

	wait_queue_head_t wait; /* For sleeping */

	int open; /* is the device open by anyone? */
	char name[128]; /* Device name */
	char phys[64]; /* Device physical location */
	char uniq[64]; /* Device unique identifier (serial #) */

	void *driver_data;

	/* device-specific function pointers */
	int (hidinput_input_event) (struct input_dev , unsigned int, unsigned int, int);
	int (hid_open) (struct hid_device );
	void (hid_close) (struct hid_device );

	/* hiddev event handler */
	void (hiddev_hid_event) (struct hid_device , struct hid_field *field,
	struct hid_usage *, __s32);
	void (hiddev_report_event) (struct hid_device , struct hid_report *);
	#ifdef CONFIG_USB_HIDINPUT_POWERBOOK
	unsigned long pb_pressed_fn[NBITS(KEY_MAX)];
	unsigned long pb_pressed_numlock[NBITS(KEY_MAX)];
	#endif
	};

	#define HID_GLOBAL_STACK_SIZE 4
	#define HID_COLLECTION_STACK_SIZE 4

	struct hid_parser {
	struct hid_global global;
	struct hid_global global_stack[HID_GLOBAL_STACK_SIZE];
	unsigned global_stack_ptr;
	struct hid_local local;
	unsigned collection_stack[HID_COLLECTION_STACK_SIZE];
	unsigned collection_stack_ptr;
	struct hid_device *device;
	};

	struct hid_class_descriptor {
	__u8 bDescriptorType;
	__u16 wDescriptorLength;
	} __attribute__ ((packed));

	struct hid_descriptor {
	__u8 bLength;
	__u8 bDescriptorType;
	__u16 bcdHID;
	__u8 bCountryCode;
	__u8 bNumDescriptors;

	struct hid_class_descriptor desc[1];
	} __attribute__ ((packed));

	/* Applications from HID Usage Tables 4/8/99 Version 1.1 */
	/* We ignore a few input applications that are not widely used */
	#define IS_INPUT_APPLICATION(a) (((a >= 0x00010000) && (a <= 0x00010008)) \|\| (a == 0x00010080) \|\| (a == 0x000c0001))

	/* HID core API */
	extern void hidinput_hid_event(struct hid_device , struct hid_field , struct hid_usage *, __s32);
	extern void hidinput_report_event(struct hid_device hid, struct hid_report report);
	extern int hidinput_connect(struct hid_device *);
	extern void hidinput_disconnect(struct hid_device *);

	int hid_set_field(struct hid_field *, unsigned, __s32);
	int hid_input_report(struct hid_device , int type, u8 , int, int);
	int hidinput_find_field(struct hid_device hid, unsigned int type, unsigned int code, struct hid_field *field);
	void hid_input_field(struct hid_device hid, struct hid_field field, __u8 *data, int interrupt);
	void hid_output_report(struct hid_report report, __u8 data);
	void hid_free_device(struct hid_device *device);
	struct hid_device hid_parse_report(__u8 start, unsigned size);

	#ifdef CONFIG_HID_FF
	int hid_ff_init(struct hid_device *hid);

	int hid_lgff_init(struct hid_device *hid);
	int hid_plff_init(struct hid_device *hid);
	int hid_tmff_init(struct hid_device *hid);
	int hid_zpff_init(struct hid_device *hid);
	#ifdef CONFIG_HID_PID
	int hid_pidff_init(struct hid_device *hid);
	#else
	static inline int hid_pidff_init(struct hid_device *hid) { return -ENODEV; }
	#endif

	#else
	static inline int hid_ff_init(struct hid_device *hid) { return -1; }
	#endif
	#ifdef DEBUG
	#define dbg(format, arg...) printk(KERN_DEBUG "%s: " format "\n" , \
	__FILE__ , ## arg)
	#else
	#define dbg(format, arg...) do {} while (0)
	#endif

	#define err(format, arg...) printk(KERN_ERR "%s: " format "\n" , \
	__FILE__ , ## arg)
	#endif