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hid.c
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hid.c
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#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#include <locale.h>
#include <errno.h>
/* Unix */
#include <unistd.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <sys/ioctl.h>
#include <sys/utsname.h>
#include <fcntl.h>
#include <poll.h>
/* Linux */
#ifndef _HIDRAW_H
#define _HIDRAW_H
#ifndef __HID_H
#define __HID_H
/*
* Copyright (c) 1999 Andreas Gal
* Copyright (c) 2000-2001 Vojtech Pavlik
* Copyright (c) 2006-2007 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 <[email protected]>, or by paper mail:
* Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
*/
/*
* 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)
#define HID_MAX_DESCRIPTOR_SIZE 4096
#ifdef __KERNEL__
#include <linux/types.h>
#include <linux/slab.h>
#include <linux/list.h>
#include <linux/mod_devicetable.h> /* hid_device_id */
#include <linux/timer.h>
#include <linux/workqueue.h>
#include <linux/input.h>
/*
* 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
#define HID_DG_DIGITIZER 0x000d0001
#define HID_DG_PEN 0x000d0002
#define HID_DG_LIGHTPEN 0x000d0003
#define HID_DG_TOUCHSCREEN 0x000d0004
#define HID_DG_TOUCHPAD 0x000d0005
#define HID_DG_STYLUS 0x000d0020
#define HID_DG_PUCK 0x000d0021
#define HID_DG_FINGER 0x000d0022
#define HID_DG_TIPPRESSURE 0x000d0030
#define HID_DG_BARRELPRESSURE 0x000d0031
#define HID_DG_INRANGE 0x000d0032
#define HID_DG_TOUCH 0x000d0033
#define HID_DG_UNTOUCH 0x000d0034
#define HID_DG_TAP 0x000d0035
#define HID_DG_TABLETFUNCTIONKEY 0x000d0039
#define HID_DG_PROGRAMCHANGEKEY 0x000d003a
#define HID_DG_INVERT 0x000d003c
#define HID_DG_TIPSWITCH 0x000d0042
#define HID_DG_TIPSWITCH2 0x000d0043
#define HID_DG_BARRELSWITCH 0x000d0044
#define HID_DG_ERASER 0x000d0045
#define HID_DG_TABLETPICK 0x000d0046
/*
* as of May 20, 2009 the usages below are not yet in the official USB spec
* but are being pushed by Microsft as described in their paper "Digitizer
* Drivers for Windows Touch and Pen-Based Computers"
*/
#define HID_DG_CONFIDENCE 0x000d0047
#define HID_DG_WIDTH 0x000d0048
#define HID_DG_HEIGHT 0x000d0049
#define HID_DG_CONTACTID 0x000d0051
#define HID_DG_INPUTMODE 0x000d0052
#define HID_DG_DEVICEINDEX 0x000d0053
#define HID_DG_CONTACTCOUNT 0x000d0054
#define HID_DG_CONTACTMAX 0x000d0055
/*
* 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 connect requests
*/
#define HID_CONNECT_HIDINPUT 0x01
#define HID_CONNECT_HIDINPUT_FORCE 0x02
#define HID_CONNECT_HIDRAW 0x04
#define HID_CONNECT_HIDDEV 0x08
#define HID_CONNECT_HIDDEV_FORCE 0x10
#define HID_CONNECT_FF 0x20
#define HID_CONNECT_DEFAULT (HID_CONNECT_HIDINPUT|HID_CONNECT_HIDRAW| \
HID_CONNECT_HIDDEV|HID_CONNECT_FF)
/*
* HID device quirks.
*/
/*
* Increase this if you need to configure more HID quirks at module load time
*/
#define MAX_USBHID_BOOT_QUIRKS 4
#define HID_QUIRK_INVERT 0x00000001
#define HID_QUIRK_NOTOUCH 0x00000002
#define HID_QUIRK_IGNORE 0x00000004
#define HID_QUIRK_NOGET 0x00000008
#define HID_QUIRK_BADPAD 0x00000020
#define HID_QUIRK_MULTI_INPUT 0x00000040
#define HID_QUIRK_SKIP_OUTPUT_REPORTS 0x00010000
#define HID_QUIRK_FULLSPEED_INTERVAL 0x10000000
#define HID_QUIRK_NO_INIT_REPORTS 0x20000000
/*
* 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_USAGES 12288
#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;
char *raw_report;
};
struct hid_output_fifo {
struct hid_report *report;
char *raw_report;
};
#define HID_CLAIMED_INPUT 1
#define HID_CLAIMED_HIDDEV 2
#define HID_CLAIMED_HIDRAW 4
#define HID_STAT_ADDED 1
#define HID_STAT_PARSED 2
struct hid_input {
struct list_head list;
struct hid_report *report;
struct input_dev *input;
};
enum hid_type {
HID_TYPE_OTHER = 0,
HID_TYPE_USBMOUSE
};
struct hid_driver;
struct hid_ll_driver;
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 */
__u16 bus; /* BUS ID */
__u32 vendor; /* Vendor ID */
__u32 product; /* Product ID */
__u32 version; /* HID version */
enum hid_type type; /* device type (mouse, kbd, ...) */
unsigned country; /* HID country */
struct hid_report_enum report_enum[HID_REPORT_TYPES];
struct device dev; /* device */
struct hid_driver *driver;
struct hid_ll_driver *ll_driver;
unsigned int status; /* see STAT flags above */
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 */
void *hidraw;
int minor; /* Hiddev minor number */
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;
/* temporary hid_ff handling (until moved to the drivers) */
int (*ff_init)(struct hid_device *);
/* hiddev event handler */
int (*hiddev_connect)(struct hid_device *, unsigned int);
void (*hiddev_disconnect)(struct hid_device *);
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 *);
/* handler for raw output data, used by hidraw */
int (*hid_output_raw_report) (struct hid_device *, __u8 *, size_t);
/* debugging support via debugfs */
unsigned short debug;
struct dentry *debug_dir;
struct dentry *debug_rdesc;
struct dentry *debug_events;
struct list_head debug_list;
wait_queue_head_t debug_wait;
};
static inline void *hid_get_drvdata(struct hid_device *hdev)
{
return dev_get_drvdata(&hdev->dev);
}
static inline void hid_set_drvdata(struct hid_device *hdev, void *data)
{
dev_set_drvdata(&hdev->dev, data);
}
#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;
__le16 wDescriptorLength;
} __attribute__ ((packed));
struct hid_descriptor {
__u8 bLength;
__u8 bDescriptorType;
__le16 bcdHID;
__u8 bCountryCode;
__u8 bNumDescriptors;
struct hid_class_descriptor desc[1];
} __attribute__ ((packed));
#define HID_DEVICE(b, ven, prod) \
.bus = (b), \
.vendor = (ven), .product = (prod)
#define HID_USB_DEVICE(ven, prod) HID_DEVICE(BUS_USB, ven, prod)
#define HID_BLUETOOTH_DEVICE(ven, prod) HID_DEVICE(BUS_BLUETOOTH, ven, prod)
#define HID_REPORT_ID(rep) \
.report_type = (rep)
#define HID_USAGE_ID(uhid, utype, ucode) \
.usage_hid = (uhid), .usage_type = (utype), .usage_code = (ucode)
/* we don't want to catch types and codes equal to 0 */
#define HID_TERMINATOR (HID_ANY_ID - 1)
struct hid_report_id {
__u32 report_type;
};
struct hid_usage_id {
__u32 usage_hid;
__u32 usage_type;
__u32 usage_code;
};
/**
* struct hid_driver
* @name: driver name (e.g. "Footech_bar-wheel")
* @id_table: which devices is this driver for (must be non-NULL for probe
* to be called)
* @dyn_list: list of dynamically added device ids
* @dyn_lock: lock protecting @dyn_list
* @probe: new device inserted
* @remove: device removed (NULL if not a hot-plug capable driver)
* @report_table: on which reports to call raw_event (NULL means all)
* @raw_event: if report in report_table, this hook is called (NULL means nop)
* @usage_table: on which events to call event (NULL means all)
* @event: if usage in usage_table, this hook is called (NULL means nop)
* @report_fixup: called before report descriptor parsing (NULL means nop)
* @input_mapping: invoked on input registering before mapping an usage
* @input_mapped: invoked on input registering after mapping an usage
*
* raw_event and event should return 0 on no action performed, 1 when no
* further processing should be done and negative on error
*
* input_mapping shall return a negative value to completely ignore this usage
* (e.g. doubled or invalid usage), zero to continue with parsing of this
* usage by generic code (no special handling needed) or positive to skip
* generic parsing (needed special handling which was done in the hook already)
* input_mapped shall return negative to inform the layer that this usage
* should not be considered for further processing or zero to notify that
* no processing was performed and should be done in a generic manner
* Both these functions may be NULL which means the same behavior as returning
* zero from them.
*/
struct hid_driver {
char *name;
const struct hid_device_id *id_table;
struct list_head dyn_list;
spinlock_t dyn_lock;
int (*probe)(struct hid_device *dev, const struct hid_device_id *id);
void (*remove)(struct hid_device *dev);
const struct hid_report_id *report_table;
int (*raw_event)(struct hid_device *hdev, struct hid_report *report,
u8 *data, int size);
const struct hid_usage_id *usage_table;
int (*event)(struct hid_device *hdev, struct hid_field *field,
struct hid_usage *usage, __s32 value);
void (*report_fixup)(struct hid_device *hdev, __u8 *buf,
unsigned int size);
int (*input_mapping)(struct hid_device *hdev,
struct hid_input *hidinput, struct hid_field *field,
struct hid_usage *usage, unsigned long **bit, int *max);
int (*input_mapped)(struct hid_device *hdev,
struct hid_input *hidinput, struct hid_field *field,
struct hid_usage *usage, unsigned long **bit, int *max);
/* private: */
struct device_driver driver;
};
/**
* hid_ll_driver - low level driver callbacks
* @start: called on probe to start the device
* @stop: called on remove
* @open: called by input layer on open
* @close: called by input layer on close
* @hidinput_input_event: event input event (e.g. ff or leds)
* @parse: this method is called only once to parse the device data,
* shouldn't allocate anything to not leak memory
*/
struct hid_ll_driver {
int (*start)(struct hid_device *hdev);
void (*stop)(struct hid_device *hdev);
int (*open)(struct hid_device *hdev);
void (*close)(struct hid_device *hdev);
int (*power)(struct hid_device *hdev, int level);
int (*hidinput_input_event) (struct input_dev *idev, unsigned int type,
unsigned int code, int value);
int (*parse)(struct hid_device *hdev);
};
#define PM_HINT_FULLON 1<<5
#define PM_HINT_NORMAL 1<<1
/* 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) || (a == 0x000d0002))
/* HID core API */
extern int hid_debug;
extern int hid_add_device(struct hid_device *);
extern void hid_destroy_device(struct hid_device *);
extern int __must_check __hid_register_driver(struct hid_driver *,
struct module *, const char *mod_name);
static inline int __must_check hid_register_driver(struct hid_driver *driver)
{
return __hid_register_driver(driver, THIS_MODULE, KBUILD_MODNAME);
}
extern void hid_unregister_driver(struct hid_driver *);
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 *hid, unsigned int force);
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_output_report(struct hid_report *report, __u8 *data);
struct hid_device *hid_allocate_device(void);
int hid_parse_report(struct hid_device *hid, __u8 *start, unsigned size);
int hid_check_keys_pressed(struct hid_device *hid);
int hid_connect(struct hid_device *hid, unsigned int connect_mask);
void hid_disconnect(struct hid_device *hid);
/**
* hid_map_usage - map usage input bits
*
* @hidinput: hidinput which we are interested in
* @usage: usage to fill in
* @bit: pointer to input->{}bit (out parameter)
* @max: maximal valid usage->code to consider later (out parameter)
* @type: input event type (EV_KEY, EV_REL, ...)
* @c: code which corresponds to this usage and type
*/
static inline void hid_map_usage(struct hid_input *hidinput,
struct hid_usage *usage, unsigned long **bit, int *max,
__u8 type, __u16 c)
{
struct input_dev *input = hidinput->input;
usage->type = type;
usage->code = c;
switch (type) {
case EV_ABS:
*bit = input->absbit;
*max = ABS_MAX;
break;
case EV_REL:
*bit = input->relbit;
*max = REL_MAX;
break;
case EV_KEY:
*bit = input->keybit;
*max = KEY_MAX;
break;
case EV_LED:
*bit = input->ledbit;
*max = LED_MAX;
break;
}
}
/**
* hid_map_usage_clear - map usage input bits and clear the input bit
*
* The same as hid_map_usage, except the @c bit is also cleared in supported
* bits (@bit).
*/
static inline void hid_map_usage_clear(struct hid_input *hidinput,
struct hid_usage *usage, unsigned long **bit, int *max,
__u8 type, __u16 c)
{
hid_map_usage(hidinput, usage, bit, max, type, c);
clear_bit(c, *bit);
}
/**
* hid_parse - parse HW reports
*
* @hdev: hid device
*
* Call this from probe after you set up the device (if needed). Your
* report_fixup will be called (if non-NULL) after reading raw report from
* device before passing it to hid layer for real parsing.
*/
static inline int __must_check hid_parse(struct hid_device *hdev)
{
int ret;
if (hdev->status & HID_STAT_PARSED)
return 0;
ret = hdev->ll_driver->parse(hdev);
if (!ret)
hdev->status |= HID_STAT_PARSED;
return ret;
}
/**
* hid_hw_start - start underlaying HW
*
* @hdev: hid device
* @connect_mask: which outputs to connect, see HID_CONNECT_*
*
* Call this in probe function *after* hid_parse. This will setup HW buffers
* and start the device (if not deffered to device open). hid_hw_stop must be
* called if this was successfull.
*/
static inline int __must_check hid_hw_start(struct hid_device *hdev,
unsigned int connect_mask)
{
int ret = hdev->ll_driver->start(hdev);
if (ret || !connect_mask)
return ret;
ret = hid_connect(hdev, connect_mask);
if (ret)
hdev->ll_driver->stop(hdev);
return ret;
}
/**
* hid_hw_stop - stop underlaying HW
*
* @hdev: hid device
*
* This is usually called from remove function or from probe when something
* failed and hid_hw_start was called already.
*/
static inline void hid_hw_stop(struct hid_device *hdev)
{
hid_disconnect(hdev);
hdev->ll_driver->stop(hdev);
}
void hid_report_raw_event(struct hid_device *hid, int type, u8 *data, int size,
int interrupt);
extern int hid_generic_init(void);
extern void hid_generic_exit(void);
/* HID quirks API */
u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct);
int usbhid_quirks_init(char **quirks_param);
void usbhid_quirks_exit(void);
void usbhid_set_leds(struct hid_device *hid);
#ifdef CONFIG_HID_PID
int hid_pidff_init(struct hid_device *hid);
#else
#define hid_pidff_init NULL
#endif
#define dbg_hid(format, arg...) if (hid_debug) \
printk(KERN_DEBUG "%s: " format ,\
__FILE__ , ## arg)
#define err_hid(format, arg...) printk(KERN_ERR "%s: " format "\n" , \
__FILE__ , ## arg)
#endif /* HID_FF */
#endif
#include <linux/types.h>
struct hidraw_report_descriptor {
__u32 size;
__u8 value[HID_MAX_DESCRIPTOR_SIZE];
};
struct hidraw_devinfo {
__u32 bustype;
__s16 vendor;
__s16 product;
};
/* ioctl interface */
#define HIDIOCGRDESCSIZE _IOR('H', 0x01, int)
#define HIDIOCGRDESC _IOR('H', 0x02, struct hidraw_report_descriptor)
#define HIDIOCGRAWINFO _IOR('H', 0x03, struct hidraw_devinfo)
#define HIDIOCGRAWNAME(len) _IOC(_IOC_READ, 'H', 0x04, len)
#define HIDIOCGRAWPHYS(len) _IOC(_IOC_READ, 'H', 0x05, len)
#define HIDRAW_FIRST_MINOR 0
#define HIDRAW_MAX_DEVICES 64
/* number of reports to buffer */
#define HIDRAW_BUFFER_SIZE 64
/* kernel-only API declarations */
#ifdef __KERNEL__
struct hidraw {
unsigned int minor;
int exist;
int open;
wait_queue_head_t wait;
struct hid_device *hid;
struct device *dev;
struct list_head list;
};
struct hidraw_report {
__u8 *value;
int len;
};
struct hidraw_list {
struct hidraw_report buffer[HIDRAW_BUFFER_SIZE];
int head;
int tail;
struct fasync_struct *fasync;
struct hidraw *hidraw;
struct list_head node;
struct mutex read_mutex;
};
#ifdef CONFIG_HIDRAW
int hidraw_init(void);
void hidraw_exit(void);
void hidraw_report_event(struct hid_device *, u8 *, int);
int hidraw_connect(struct hid_device *);
void hidraw_disconnect(struct hid_device *);
#else
static inline int hidraw_init(void) { return 0; }
static inline void hidraw_exit(void) { }
static inline void hidraw_report_event(struct hid_device *hid, u8 *data, int len) { }
static inline int hidraw_connect(struct hid_device *hid) { return -1; }
static inline void hidraw_disconnect(struct hid_device *hid) { }
#endif
#endif
#endif
/* Definitions from linux/hidraw.h. Since these are new, some distros
may not have header files which contain them. */
#ifndef HIDIOCSFEATURE
#define HIDIOCSFEATURE(len) _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x06, len)
#endif
#ifndef HIDIOCGFEATURE
#define HIDIOCGFEATURE(len) _IOC(_IOC_WRITE|_IOC_READ, 'H', 0x07, len)
#endif
#include <linux/version.h>
#include <dlfcn.h>
#include "globdef.h"
#include "uidef.h"
#include "hidapi.h"
int udev_library_flag;
struct udev;
struct udev_list_entry;
struct udev_device;
struct udev_enumerate;
typedef struct udev* (*p_udev_ref)(struct udev *udev);
typedef struct udev* (*p_udev_unref)(struct udev *udev);
typedef struct udev* (*p_udev_new)(void);
typedef struct udev_list_entry* (*p_udev_list_entry_get_next)(struct udev_list_entry *list_entry);
typedef struct udev_list_entry* (*p_udev_list_entry_get_by_name)(struct udev_list_entry *list_entry, const char *name);
typedef const char* (*p_udev_list_entry_get_name)(struct udev_list_entry *list_entry);
typedef const char* (*p_udev_list_entry_get_value)(struct udev_list_entry *list_entry);
typedef struct udev_device* (*p_udev_device_unref)(struct udev_device *udev_device);
typedef struct udev_device* (*p_udev_device_new_from_syspath)(struct udev *udev, const char *syspath);
typedef struct udev_device* (*p_udev_device_new_from_devnum)(struct udev *udev, char type, dev_t devnum);
typedef struct udev_device* (*p_udev_device_get_parent_with_subsystem_devtype)(
struct udev_device *udev_device, const char *subsystem,
const char *devtype);
typedef const char* (*p_udev_device_get_devnode)(struct udev_device *udev_device);
typedef const char* (*p_udev_device_get_sysattr_value)(struct udev_device *udev_device, const char *sysattr);
typedef struct udev_enumerate* (*p_udev_enumerate_unref)(struct udev_enumerate *udev_enumerate);
typedef struct udev_enumerate* (*p_udev_enumerate_new)(struct udev *udev);
typedef int (*p_udev_enumerate_add_match_subsystem)(struct udev_enumerate *udev_enumerate, const char *subsystem);
typedef int (*p_udev_enumerate_scan_devices)(struct udev_enumerate *udev_enumerate);
typedef struct udev_list_entry* (*p_udev_enumerate_get_list_entry)(struct udev_enumerate *udev_enumerate);
p_udev_new udev_new;
p_udev_ref udev_ref;
p_udev_unref udev_unref;
p_udev_list_entry_get_next udev_list_entry_get_next;
p_udev_list_entry_get_by_name udev_list_entry_get_by_name;
p_udev_list_entry_get_name udev_list_entry_get_name;
p_udev_list_entry_get_value udev_list_entry_get_value;
p_udev_device_unref udev_device_unref;
p_udev_device_new_from_syspath udev_device_new_from_syspath;
p_udev_device_new_from_devnum udev_device_new_from_devnum;
p_udev_device_get_parent_with_subsystem_devtype udev_device_get_parent_with_subsystem_devtype;
p_udev_device_get_devnode udev_device_get_devnode;
p_udev_enumerate_unref udev_enumerate_unref;
p_udev_device_get_sysattr_value udev_device_get_sysattr_value ;
p_udev_enumerate_new udev_enumerate_new;
p_udev_enumerate_add_match_subsystem udev_enumerate_add_match_subsystem;
p_udev_enumerate_scan_devices udev_enumerate_scan_devices;
p_udev_enumerate_get_list_entry udev_enumerate_get_list_entry;
#define udev_list_entry_foreach(list_entry, first_entry) \
for (list_entry = first_entry; \
list_entry != NULL; \
list_entry = udev_list_entry_get_next(list_entry))
struct hid_device_ {
int device_handle;
int blocking;
int uses_numbered_reports;
};