input.h

讲述linux的初始化过程

#ifndef _INPUT_H
#define _INPUT_H

/*
 * $Id: input.h,v 1.18 2000/07/25 21:36:56 vojtech Exp $
 *
 *  Copyright (c) 1999-2000 Vojtech Pavlik
 *
 *  Sponsored by SuSE
 */

/*
 * 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 <[e-mail]>, or by paper mail:
 * Vojtech Pavlik, Ucitelska 1576, Prague 8, 182 00 Czech Republic
 */

#ifdef __KERNEL__
#include <linux/time.h>
#else
#include <sys/time.h>
#include <sys/ioctl.h>
#endif

/*
 * The event structure itself
 */

struct input_event {
	struct timeval time;
	unsigned short type;
	unsigned short code;
	unsigned int value;
};

/*
 * Protocol version.
 */

#define EV_VERSION		0x010000

/*
 * IOCTLs (0x00 - 0x7f)
 */

#define EVIOCGVERSION		_IOR('E', 0x01, int)                    /* get driver version */
#define EVIOCGID		_IOR('E', 0x02, short[4])		/* get device ID */
#define EVIOCGREP		_IOR('E', 0x03, int[2])			/* get repeat settings */
#define EVIOCSREP		_IOW('E', 0x03, int[2])			/* get repeat settings */
#define EVIOCGKEYCODE		_IOR('E', 0x04, int[2])			/* get keycode */
#define EVIOCSKEYCODE		_IOW('E', 0x04, int[2])			/* set keycode */
#define EVIOCGKEY		_IOR('E', 0x05, int[2])			/* get key value */
#define EVIOCGNAME(len)		_IOC(_IOC_READ, 'E', 0x06, len)		/* get device name */

#define EVIOCGBIT(ev,len)	_IOC(_IOC_READ, 'E', 0x20 + ev, len)	/* get event bits */
#define EVIOCGABS(abs)		_IOR('E', 0x40 + abs, int[5])		/* get abs value/limits */ 

/*
 * Event types
 */

#define EV_RST			0x00
#define EV_KEY			0x01
#define EV_REL			0x02
#define EV_ABS			0x03
#define EV_LED			0x11
#define EV_SND			0x12
#define EV_REP			0x14
#define EV_MAX			0x1f

/*
 * Keys and buttons
 */

#define KEY_RESERVED		0		
#define KEY_ESC			1		
#define KEY_1			2		
#define KEY_2			3		
#define KEY_3			4		
#define KEY_4			5		
#define KEY_5			6		
#define KEY_6			7		
#define KEY_7			8		
#define KEY_8			9		
#define KEY_9			10		
#define KEY_0			11		
#define KEY_MINUS		12		
#define KEY_EQUAL		13		
#define KEY_BACKSPACE		14		
#define KEY_TAB			15		
#define KEY_Q			16		
#define KEY_W			17		
#define KEY_E			18		
#define KEY_R			19		
#define KEY_T			20		
#define KEY_Y			21		
#define KEY_U			22		
#define KEY_I			23		
#define KEY_O			24		
#define KEY_P			25		
#define KEY_LEFTBRACE		26		
#define KEY_RIGHTBRACE		27		
#define KEY_ENTER		28		
#define KEY_LEFTCTRL		29		
#define KEY_A			30		
#define KEY_S			31		
#define KEY_D			32		
#define KEY_F			33		
#define KEY_G			34		
#define KEY_H			35		
#define KEY_J			36		
#define KEY_K			37		
#define KEY_L			38		
#define KEY_SEMICOLON		39		
#define KEY_APOSTROPHE		40		
#define KEY_GRAVE		41		
#define KEY_LEFTSHIFT		42		
#define KEY_BACKSLASH		43		
#define KEY_Z			44		
#define KEY_X			45		
#define KEY_C			46		
#define KEY_V			47		
#define KEY_B			48		
#define KEY_N			49		
#define KEY_M			50		
#define KEY_COMMA		51		
#define KEY_DOT			52		
#define KEY_SLASH		53		
#define KEY_RIGHTSHIFT		54		
#define KEY_KPASTERISK		55		
#define KEY_LEFTALT		56		
#define KEY_SPACE		57		
#define KEY_CAPSLOCK		58		
#define KEY_F1			59		
#define KEY_F2			60		
#define KEY_F3			61		
#define KEY_F4			62		
#define KEY_F5			63		
#define KEY_F6			64		
#define KEY_F7			65		
#define KEY_F8			66		
#define KEY_F9			67		
#define KEY_F10			68		
#define KEY_NUMLOCK		69		
#define KEY_SCROLLLOCK		70		
#define KEY_KP7			71		
#define KEY_KP8			72		
#define KEY_KP9			73		
#define KEY_KPMINUS		74		
#define KEY_KP4			75		
#define KEY_KP5			76		
#define KEY_KP6			77		
#define KEY_KPPLUS		78		
#define KEY_KP1			79		
#define KEY_KP2			80		
#define KEY_KP3			81		
#define KEY_KP0			82		
#define KEY_KPDOT		83		
#define KEY_103RD		84
#define KEY_F13			85		
#define KEY_102ND		86		
#define KEY_F11			87		
#define KEY_F12			88		
#define KEY_F14			89		
#define KEY_F15			90		
#define KEY_F16			91		
#define KEY_F17			92		
#define KEY_F18			93		
#define KEY_F19			94		
#define KEY_F20			95		
#define KEY_KPENTER		96		
#define KEY_RIGHTCTRL		97		
#define KEY_KPSLASH		98		
#define KEY_SYSRQ		99		
#define KEY_RIGHTALT		100		
#define KEY_LINEFEED		101		
#define KEY_HOME		102		
#define KEY_UP			103		
#define KEY_PAGEUP		104		
#define KEY_LEFT		105		
#define KEY_RIGHT		106		
#define KEY_END			107		
#define KEY_DOWN		108		
#define KEY_PAGEDOWN		109		
#define KEY_INSERT		110		
#define KEY_DELETE		111		
#define KEY_MACRO		112		
#define KEY_MUTE		113		
#define KEY_VOLUMEDOWN		114		
#define KEY_VOLUMEUP		115		
#define KEY_POWER		116		
#define KEY_KPEQUAL		117		
#define KEY_KPPLUSMINUS		118		
#define KEY_PAUSE		119		
#define KEY_F21			120		
#define KEY_F22			121		
#define KEY_F23			122		
#define KEY_F24			123		
#define KEY_KPCOMMA		124
#define KEY_LEFTMETA		125		
#define KEY_RIGHTMETA		126		
#define KEY_COMPOSE		127		

#define KEY_STOP		128		
#define KEY_AGAIN		129		
#define KEY_PROPS		130		
#define KEY_UNDO		131		
#define KEY_FRONT		132		
#define KEY_COPY		133		
#define KEY_OPEN		134		
#define KEY_PASTE		135		
#define KEY_FIND		136		
#define KEY_CUT			137		
#define KEY_HELP		138		
#define KEY_MENU		139		
#define KEY_CALC		140		
#define KEY_SETUP		141		
#define KEY_SLEEP		142		
#define KEY_WAKEUP		143		
#define KEY_FILE		144		
#define KEY_SENDFILE		145		
#define KEY_DELETEFILE		146		
#define KEY_XFER		147		
#define KEY_PROG1		148		
#define KEY_PROG2		149		
#define KEY_WWW			150		
#define KEY_MSDOS		151		
#define KEY_COFFEE		152		
#define KEY_DIRECTION		153		
#define KEY_CYCLEWINDOWS	154		
#define KEY_MAIL		155
#define KEY_BOOKMARKS		156
#define KEY_COMPUTER		157
#define KEY_BACK		158
#define KEY_FORWARD		159
#define KEY_CLOSECD		160		
#define KEY_EJECTCD		161		
#define KEY_EJECTCLOSECD	162		
#define KEY_NEXTSONG		163		
#define KEY_PLAYPAUSE		164		
#define KEY_PREVIOUSSONG	165		
#define KEY_STOPCD		166		
#define KEY_RECORD		167		
#define KEY_REWIND		168		
#define KEY_PHONE		169

#define KEY_CONFIG		171
#define KEY_HOMEPAGE		172
#define KEY_REFRESH		173
#define KEY_EXIT		174
#define KEY_MOVE		175
#define KEY_EDIT		176
#define KEY_SCROLLUP		177
#define KEY_SCROLLDOWN		178
#define KEY_KPLEFTPAREN		179
#define KEY_KPRIGHTPAREN	180

#define KEY_INTL1		181
#define KEY_INTL2		182
#define KEY_INTL3		183
#define KEY_INTL4		184
#define KEY_INTL5		185
#define KEY_INTL6		186
#define KEY_INTL7		187
#define KEY_INTL8		188
#define KEY_INTL9		189
#define KEY_LANG1		190
#define KEY_LANG2		191
#define KEY_LANG3		192
#define KEY_LANG4		193
#define KEY_LANG5		194
#define KEY_LANG6		195
#define KEY_LANG7		196
#define KEY_LANG8		197
#define KEY_LANG9		198

#define KEY_UNKNOWN		200

#define BTN_MISC		0x100
#define BTN_0			0x100
#define BTN_1			0x101
#define BTN_2			0x102
#define BTN_3			0x103
#define BTN_4			0x104
#define BTN_5			0x105
#define BTN_6			0x106
#define BTN_7			0x107
#define BTN_8			0x108
#define BTN_9			0x109

#define BTN_MOUSE		0x110
#define BTN_LEFT		0x110
#define BTN_RIGHT		0x111
#define BTN_MIDDLE		0x112
#define BTN_SIDE		0x113
#define BTN_EXTRA		0x114
#define BTN_FORWARD		0x115
#define BTN_BACK		0x116

#define BTN_JOYSTICK		0x120
#define BTN_TRIGGER		0x120
#define BTN_THUMB		0x121
#define BTN_THUMB2		0x122
#define BTN_TOP			0x123
#define BTN_TOP2		0x124
#define BTN_PINKIE		0x125
#define BTN_BASE		0x126
#define BTN_BASE2		0x127
#define BTN_BASE3		0x128
#define BTN_BASE4		0x129
#define BTN_BASE5		0x12a
#define BTN_BASE6		0x12b

#define BTN_GAMEPAD		0x130
#define BTN_A			0x130
#define BTN_B			0x131
#define BTN_C			0x132
#define BTN_X			0x133
#define BTN_Y			0x134
#define BTN_Z			0x135
#define BTN_TL			0x136
#define BTN_TR			0x137
#define BTN_TL2			0x138
#define BTN_TR2			0x139
#define BTN_SELECT		0x13a
#define BTN_START		0x13b
#define BTN_MODE		0x13c

#define BTN_DIGI		0x140
#define BTN_TOOL_PEN		0x140
#define BTN_TOOL_RUBBER		0x141
#define BTN_TOOL_BRUSH		0x142
#define BTN_TOOL_PENCIL		0x143
#define BTN_TOOL_AIRBRUSH	0x144
#define BTN_TOOL_FINGER		0x145
#define BTN_TOOL_MOUSE		0x146
#define BTN_TOOL_LENS		0x147
#define BTN_TOUCH		0x14a
#define BTN_STYLUS		0x14b
#define BTN_STYLUS2		0x14c

#define KEY_MAX			0x1ff

/*
 * Relative axes
 */

#define REL_X			0x00
#define REL_Y			0x01
#define REL_Z			0x02
#define REL_HWHEEL		0x06
#define REL_DIAL		0x07
#define REL_WHEEL		0x08
#define REL_MISC		0x09
#define REL_MAX			0x0f

/*
 * Absolute axes
 */

#define ABS_X			0x00
#define ABS_Y			0x01
#define ABS_Z			0x02
#define ABS_RX			0x03
#define ABS_RY			0x04
#define ABS_RZ			0x05
#define ABS_THROTTLE		0x06
#define ABS_RUDDER		0x07
#define ABS_WHEEL		0x08
#define ABS_GAS			0x09
#define ABS_BRAKE		0x0a
#define ABS_HAT0X		0x10
#define ABS_HAT0Y		0x11
#define ABS_HAT1X		0x12
#define ABS_HAT1Y		0x13
#define ABS_HAT2X		0x14
#define ABS_HAT2Y		0x15
#define ABS_HAT3X		0x16
#define ABS_HAT3Y		0x17
#define ABS_PRESSURE		0x18
#define ABS_DISTANCE		0x19
#define ABS_TILT_X		0x1a
#define ABS_TILT_Y		0x1b
#define ABS_MISC		0x1c
#define ABS_MAX			0x1f

/*
 * LEDs
 */

#define LED_NUML		0x00
#define LED_CAPSL		0x01
#define LED_SCROLLL		0x02
#define LED_COMPOSE		0x03
#define LED_KANA		0x04
#define LED_MAX			0x0f

/*
 * Autorepeat values
 */

#define REP_DELAY		0x00
#define REP_PERIOD		0x01
#define REP_MAX			0x01

/*
 * Sounds
 */

#define SND_CLICK		0x00
#define SND_BELL		0x01
#define SND_MAX			0x07

/*
 * IDs.
 */

#define ID_BUS			0
#define ID_VENDOR		1
#define ID_PRODUCT		2
#define ID_VERSION		3

#define BUS_PCI			0x01
#define BUS_ISAPNP		0x02
#define BUS_USB			0x03

#define BUS_ISA			0x10
#define BUS_I8042		0x11
#define BUS_XTKBD		0x12
#define BUS_RS232		0x13
#define BUS_GAMEPORT		0x14
#define BUS_PARPORT		0x15
#define BUS_AMIGA		0x16
#define BUS_ADB			0x17
#define BUS_I2C			0x18

#ifdef __KERNEL__

/*
 * In-kernel definitions.
 */

#include <linux/sched.h>
#include <linux/devfs_fs_kernel.h>

#define NBITS(x) ((((x)-1)/BITS_PER_LONG)+1)
#define BIT(x)	(1UL<<((x)%BITS_PER_LONG))
#define LONG(x) ((x)/BITS_PER_LONG)

struct input_dev {

	void *private;

	int number;
	char *name;
	unsigned short idbus;
	unsigned short idvendor;
	unsigned short idproduct;
	unsigned short idversion;

	unsigned long evbit[NBITS(EV_MAX)];
	unsigned long keybit[NBITS(KEY_MAX)];
	unsigned long relbit[NBITS(REL_MAX)];
	unsigned long absbit[NBITS(ABS_MAX)];
	unsigned long ledbit[NBITS(LED_MAX)];
	unsigned long sndbit[NBITS(SND_MAX)];

	unsigned int keycodemax;
	unsigned int keycodesize;
	void *keycode;

	unsigned int repeat_key;
	struct timer_list timer;

	int abs[ABS_MAX + 1];
	int rep[REP_MAX + 1];

	unsigned long key[NBITS(KEY_MAX)];
	unsigned long led[NBITS(LED_MAX)];
	unsigned long snd[NBITS(SND_MAX)];
	
	int absmax[ABS_MAX + 1];
	int absmin[ABS_MAX + 1];
	int absfuzz[ABS_MAX + 1];
	int absflat[ABS_MAX + 1];

	int (*open)(struct input_dev *dev);
	void (*close)(struct input_dev *dev);
	int (*event)(struct input_dev *dev, unsigned int type, unsigned int code, int value);

	struct input_handle *handle;
	struct input_dev *next;
};

struct input_handler {

	void *private;

	void (*event)(struct input_handle *handle, unsigned int type, unsigned int code, int value);
	struct input_handle* (*connect)(struct input_handler *handler, struct input_dev *dev);
	void (*disconnect)(struct input_handle *handle);

	struct file_operations *fops;
	int minor;

	struct input_handle *handle;
	struct input_handler *next;
};

struct input_handle {

	void *private;

	int open;
	
	struct input_dev *dev;
	struct input_handler *handler;

	struct input_handle *dnext;
	struct input_handle *hnext;
};

void input_register_device(struct input_dev *);
void input_unregister_device(struct input_dev *);

void input_register_handler(struct input_handler *);
void input_unregister_handler(struct input_handler *);

int input_open_device(struct input_handle *);
void input_close_device(struct input_handle *);

devfs_handle_t input_register_minor(char *name, int minor, int minor_base);
void input_unregister_minor(devfs_handle_t handle);

void input_event(struct input_dev *dev, unsigned int type, unsigned int code, int value);

#define input_report_key(a,b,c) input_event(a, EV_KEY, b, !!(c))
#define input_report_rel(a,b,c) input_event(a, EV_REL, b, c)
#define input_report_abs(a,b,c) input_event(a, EV_ABS, b, c)

#endif
#endif