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kernel-fxtec-pro1x/include/linux/hid.h
Jiri Kosina 66da876962 USB HID: report descriptor of Cypress USB barcode readers needs fixup 
Certain versions of Cypress USB barcode readers (this problem is known to
happen at least with PIDs 0xde61 and 0xde64) have report descriptor which
has swapped usage min and usage max tag. This results in HID parser failing
for report descriptor of these devices, as it (wrongly) requires allocating
more usages than HID_MAX_USAGES.

Solve this by walking through the report descriptor for such devices, and swap
the usage min and usage max items (and their values) to be in proper order.

Reported-by: Bret Towe <magnade@gmail.com>
Signed-off-by: Jiri Kosina <jkosina@suse.cz>
2007-05-09 02:52:51 +02:00

536 lines
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#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) 2006-2007 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 <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.
*/
/*
* 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_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
#define HID_QUIRK_LOGITECH_DESCRIPTOR 0x00100000
#define HID_QUIRK_DUPLICATE_USAGES 0x00200000
#define HID_QUIRK_RESET_LEDS 0x00400000
#define HID_QUIRK_SWAPPED_MIN_MAX 0x00800000
/*
* 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 8192
#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);
/* HID quirks API */
u32 usbhid_lookup_quirk(const u16 idVendor, const u16 idProduct);
int usbhid_modify_dquirk(const u16 idVendor, const u16 idProduct, const u32 quirks);
int usbhid_quirks_init(char **quirks_param);
void usbhid_quirks_exit(void);
#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
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