/*
   * $Id: hid-input.c,v 1.2 2002/04/23 00:59:25 rdamazio Exp $
   *
   *  Copyright (c) 2000-2001 Vojtech Pavlik

   *  Copyright (c) 2006-2007 Jiri Kosina

   *
   *  HID to Linux Input mapping
   */
  
  /*
   * 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/module.h>
  #include <linux/slab.h>
  #include <linux/kernel.h>

  #include <linux/hid.h>

  #include <linux/hid-debug.h>

  static int hid_pb_fnmode = 1;
  module_param_named(pb_fnmode, hid_pb_fnmode, int, 0644);
  MODULE_PARM_DESC(pb_fnmode,
  		"Mode of fn key on PowerBooks (0 = disabled, 1 = fkeyslast, 2 = fkeysfirst)");

  #define unk	KEY_UNKNOWN
  
  static const unsigned char hid_keyboard[256] = {
  	  0,  0,  0,  0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
  	 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44,  2,  3,
  	  4,  5,  6,  7,  8,  9, 10, 11, 28,  1, 14, 15, 57, 12, 13, 26,
  	 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
  	 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
  	105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
  	 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
  	191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
  	115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
  	122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  	unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  	unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  	unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  	unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  	 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
  	150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
  };

  /* extended mapping for certain Logitech hardware (Logitech cordless desktop LX500) */
  #define LOGITECH_EXPANDED_KEYMAP_SIZE 80
  static int logitech_expanded_keymap[LOGITECH_EXPANDED_KEYMAP_SIZE] = {
  	  0,216,  0,213,175,156,  0,  0,  0,  0,
  	144,  0,  0,  0,  0,  0,  0,  0,  0,212,
  	174,167,152,161,112,  0,  0,  0,154,  0,
  	  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
  	  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
  	  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
  	  0,  0,  0,  0,  0,183,184,185,186,187,
  	188,189,190,191,192,193,194,  0,  0,  0
  };

  static const struct {
  	__s32 x;
  	__s32 y;
  }  hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
  
  #define map_abs(c)	do { usage->code = c; usage->type = EV_ABS; bit = input->absbit; max = ABS_MAX; } while (0)
  #define map_rel(c)	do { usage->code = c; usage->type = EV_REL; bit = input->relbit; max = REL_MAX; } while (0)
  #define map_key(c)	do { usage->code = c; usage->type = EV_KEY; bit = input->keybit; max = KEY_MAX; } while (0)
  #define map_led(c)	do { usage->code = c; usage->type = EV_LED; bit = input->ledbit; max = LED_MAX; } while (0)
  
  #define map_abs_clear(c)	do { map_abs(c); clear_bit(c, bit); } while (0)
  #define map_key_clear(c)	do { map_key(c); clear_bit(c, bit); } while (0)
  
  #ifdef CONFIG_USB_HIDINPUT_POWERBOOK
  
  struct hidinput_key_translation {
  	u16 from;
  	u16 to;
  	u8 flags;
  };
  
  #define POWERBOOK_FLAG_FKEY 0x01
  
  static struct hidinput_key_translation powerbook_fn_keys[] = {
  	{ KEY_BACKSPACE, KEY_DELETE },
  	{ KEY_F1,       KEY_BRIGHTNESSDOWN,     POWERBOOK_FLAG_FKEY },
  	{ KEY_F2,       KEY_BRIGHTNESSUP,       POWERBOOK_FLAG_FKEY },
  	{ KEY_F3,       KEY_MUTE,               POWERBOOK_FLAG_FKEY },
  	{ KEY_F4,       KEY_VOLUMEDOWN,         POWERBOOK_FLAG_FKEY },
  	{ KEY_F5,       KEY_VOLUMEUP,           POWERBOOK_FLAG_FKEY },
  	{ KEY_F6,       KEY_NUMLOCK,            POWERBOOK_FLAG_FKEY },
  	{ KEY_F7,       KEY_SWITCHVIDEOMODE,    POWERBOOK_FLAG_FKEY },
  	{ KEY_F8,       KEY_KBDILLUMTOGGLE,     POWERBOOK_FLAG_FKEY },
  	{ KEY_F9,       KEY_KBDILLUMDOWN,       POWERBOOK_FLAG_FKEY },
  	{ KEY_F10,      KEY_KBDILLUMUP,         POWERBOOK_FLAG_FKEY },
  	{ KEY_UP,       KEY_PAGEUP },
  	{ KEY_DOWN,     KEY_PAGEDOWN },
  	{ KEY_LEFT,     KEY_HOME },
  	{ KEY_RIGHT,    KEY_END },
  	{ }
  };
  
  static struct hidinput_key_translation powerbook_numlock_keys[] = {
  	{ KEY_J,        KEY_KP1 },
  	{ KEY_K,        KEY_KP2 },
  	{ KEY_L,        KEY_KP3 },
  	{ KEY_U,        KEY_KP4 },
  	{ KEY_I,        KEY_KP5 },
  	{ KEY_O,        KEY_KP6 },
  	{ KEY_7,        KEY_KP7 },
  	{ KEY_8,        KEY_KP8 },
  	{ KEY_9,        KEY_KP9 },
  	{ KEY_M,        KEY_KP0 },
  	{ KEY_DOT,      KEY_KPDOT },
  	{ KEY_SLASH,    KEY_KPPLUS },
  	{ KEY_SEMICOLON, KEY_KPMINUS },
  	{ KEY_P,        KEY_KPASTERISK },
  	{ KEY_MINUS,    KEY_KPEQUAL },
  	{ KEY_0,        KEY_KPSLASH },
  	{ KEY_F6,       KEY_NUMLOCK },
  	{ KEY_KPENTER,  KEY_KPENTER },
  	{ KEY_BACKSPACE, KEY_BACKSPACE },
  	{ }
  };
  
  static struct hidinput_key_translation powerbook_iso_keyboard[] = {
  	{ KEY_GRAVE,    KEY_102ND },
  	{ KEY_102ND,    KEY_GRAVE },
  	{ }
  };

  static struct hidinput_key_translation *find_translation(struct hidinput_key_translation *table, u16 from)
  {
  	struct hidinput_key_translation *trans;
  
  	/* Look for the translation */
  	for (trans = table; trans->from; trans++)
  		if (trans->from == from)
  			return trans;
  
  	return NULL;
  }
  
  static int hidinput_pb_event(struct hid_device *hid, struct input_dev *input,
  		struct hid_usage *usage, __s32 value)
  {
  	struct hidinput_key_translation *trans;
  
  	if (usage->code == KEY_FN) {
  		if (value) hid->quirks |=  HID_QUIRK_POWERBOOK_FN_ON;
  		else       hid->quirks &= ~HID_QUIRK_POWERBOOK_FN_ON;
  
  		input_event(input, usage->type, usage->code, value);
  
  		return 1;
  	}

  	if (hid_pb_fnmode) {

  		int do_translate;
  
  		trans = find_translation(powerbook_fn_keys, usage->code);
  		if (trans) {
  			if (test_bit(usage->code, hid->pb_pressed_fn))
  				do_translate = 1;
  			else if (trans->flags & POWERBOOK_FLAG_FKEY)
  				do_translate =

  					(hid_pb_fnmode == 2 &&  (hid->quirks & HID_QUIRK_POWERBOOK_FN_ON)) ||
  					(hid_pb_fnmode == 1 && !(hid->quirks & HID_QUIRK_POWERBOOK_FN_ON));

  			else
  				do_translate = (hid->quirks & HID_QUIRK_POWERBOOK_FN_ON);
  
  			if (do_translate) {
  				if (value)
  					set_bit(usage->code, hid->pb_pressed_fn);
  				else
  					clear_bit(usage->code, hid->pb_pressed_fn);
  
  				input_event(input, usage->type, trans->to, value);
  
  				return 1;
  			}
  		}
  
  		if (test_bit(usage->code, hid->pb_pressed_numlock) ||
  				test_bit(LED_NUML, input->led)) {
  			trans = find_translation(powerbook_numlock_keys, usage->code);
  
  			if (trans) {
  				if (value)
  					set_bit(usage->code, hid->pb_pressed_numlock);
  				else
  					clear_bit(usage->code, hid->pb_pressed_numlock);
  
  				input_event(input, usage->type, trans->to, value);
  			}
  
  			return 1;
  		}
  	}
  
  	if (hid->quirks & HID_QUIRK_POWERBOOK_ISO_KEYBOARD) {
  		trans = find_translation(powerbook_iso_keyboard, usage->code);
  		if (trans) {
  			input_event(input, usage->type, trans->to, value);
  			return 1;
  		}
  	}
  
  	return 0;
  }
  
  static void hidinput_pb_setup(struct input_dev *input)
  {
  	struct hidinput_key_translation *trans;
  
  	set_bit(KEY_NUMLOCK, input->keybit);
  
  	/* Enable all needed keys */
  	for (trans = powerbook_fn_keys; trans->from; trans++)
  		set_bit(trans->to, input->keybit);
  
  	for (trans = powerbook_numlock_keys; trans->from; trans++)
  		set_bit(trans->to, input->keybit);
  
  	for (trans = powerbook_iso_keyboard; trans->from; trans++)
  		set_bit(trans->to, input->keybit);
  
  }
  #else
  static inline int hidinput_pb_event(struct hid_device *hid, struct input_dev *input,
  		struct hid_usage *usage, __s32 value)
  {
  	return 0;
  }
  
  static inline void hidinput_pb_setup(struct input_dev *input)
  {
  }
  #endif

  static inline int match_scancode(int code, int scancode)
  {
  	if (scancode == 0)
  		return 1;
  	return ((code & (HID_USAGE_PAGE | HID_USAGE)) == scancode);
  }
  
  static inline int match_keycode(int code, int keycode)
  {
  	if (keycode == 0)
  		return 1;
  	return (code == keycode);
  }
  
  static struct hid_usage *hidinput_find_key(struct hid_device *hid,
  		int scancode, int keycode)
  {
  	int i, j, k;
  	struct hid_report *report;
  	struct hid_usage *usage;
  
  	for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
  		list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
  			for (i = 0; i < report->maxfield; i++) {
  				for ( j = 0; j < report->field[i]->maxusage; j++) {
  					usage = report->field[i]->usage + j;
  					if (usage->type == EV_KEY &&
  						match_scancode(usage->hid, scancode) &&
  						match_keycode(usage->code, keycode))
  						return usage;
  				}
  			}
  		}
  	}
  	return NULL;
  }
  
  static int hidinput_getkeycode(struct input_dev *dev, int scancode,
  				int *keycode)
  {
  	struct hid_device *hid = dev->private;
  	struct hid_usage *usage;
  	
  	usage = hidinput_find_key(hid, scancode, 0);
  	if (usage) {
  		*keycode = usage->code;
  		return 0;
  	}
  	return -EINVAL;
  }
  
  static int hidinput_setkeycode(struct input_dev *dev, int scancode,
  				int keycode)
  {
  	struct hid_device *hid = dev->private;
  	struct hid_usage *usage;
  	int old_keycode;
  	
  	if (keycode < 0 || keycode > KEY_MAX)
  		return -EINVAL;
  	
  	usage = hidinput_find_key(hid, scancode, 0);
  	if (usage) {
  		old_keycode = usage->code;
  		usage->code = keycode;
  		
  		clear_bit(old_keycode, dev->keybit);
  		set_bit(usage->code, dev->keybit);

  		dbg_hid(KERN_DEBUG "Assigned keycode %d to HID usage code %x
  ", keycode, scancode);

  		/* Set the keybit for the old keycode if the old keycode is used
  		 * by another key */
  		if (hidinput_find_key (hid, 0, old_keycode))
  			set_bit(old_keycode, dev->keybit);
  		
  		return 0;
  	}
  	
  	return -EINVAL;
  }

  static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
  				     struct hid_usage *usage)
  {
  	struct input_dev *input = hidinput->input;

  	struct hid_device *device = input_get_drvdata(input);

  	int max = 0, code;
  	unsigned long *bit = NULL;
  
  	field->hidinput = hidinput;

  	dbg_hid("Mapping: ");

  	hid_resolv_usage(usage->hid);

  	dbg_hid_line(" ---> ");

  
  	if (field->flags & HID_MAIN_ITEM_CONSTANT)
  		goto ignore;
  
  	switch (usage->hid & HID_USAGE_PAGE) {
  
  		case HID_UP_UNDEFINED:
  			goto ignore;
  
  		case HID_UP_KEYBOARD:
  
  			set_bit(EV_REP, input->evbit);
  
  			if ((usage->hid & HID_USAGE) < 256) {
  				if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
  				map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
  			} else
  				map_key(KEY_UNKNOWN);
  
  			break;
  
  		case HID_UP_BUTTON:
  
  			code = ((usage->hid - 1) & 0xf);
  
  			switch (field->application) {
  				case HID_GD_MOUSE:
  				case HID_GD_POINTER:  code += 0x110; break;
  				case HID_GD_JOYSTICK: code += 0x120; break;
  				case HID_GD_GAMEPAD:  code += 0x130; break;
  				default:
  					switch (field->physical) {
  						case HID_GD_MOUSE:
  						case HID_GD_POINTER:  code += 0x110; break;
  						case HID_GD_JOYSTICK: code += 0x120; break;
  						case HID_GD_GAMEPAD:  code += 0x130; break;
  						default:              code += 0x100;
  					}
  			}

  			/* Special handling for Logitech Cordless Desktop */
  			if (field->application != HID_GD_MOUSE) {
  				if (device->quirks & HID_QUIRK_LOGITECH_EXPANDED_KEYMAP) {
  					int hid = usage->hid & HID_USAGE;
  					if (hid < LOGITECH_EXPANDED_KEYMAP_SIZE && logitech_expanded_keymap[hid] != 0)
  						code = logitech_expanded_keymap[hid];
  				}
  			} else {
  				if (device->quirks & HID_QUIRK_LOGITECH_IGNORE_DOUBLED_WHEEL) {
  					int hid = usage->hid & HID_USAGE;
  					if (hid == 7 || hid == 8)
  						goto ignore;
  				}
  			}

  			map_key(code);

  			break;
  
  
  		case HID_UP_SIMULATION:
  
  			switch (usage->hid & 0xffff) {
  				case 0xba: map_abs(ABS_RUDDER);   break;
  				case 0xbb: map_abs(ABS_THROTTLE); break;
  				case 0xc4: map_abs(ABS_GAS);      break;
  				case 0xc5: map_abs(ABS_BRAKE);    break;
  				case 0xc8: map_abs(ABS_WHEEL);    break;
  				default:   goto ignore;
  			}
  			break;
  
  		case HID_UP_GENDESK:
  
  			if ((usage->hid & 0xf0) == 0x80) {	/* SystemControl */
  				switch (usage->hid & 0xf) {
  					case 0x1: map_key_clear(KEY_POWER);  break;
  					case 0x2: map_key_clear(KEY_SLEEP);  break;
  					case 0x3: map_key_clear(KEY_WAKEUP); break;
  					default: goto unknown;
  				}
  				break;
  			}
  
  			if ((usage->hid & 0xf0) == 0x90) {	/* D-pad */
  				switch (usage->hid) {
  					case HID_GD_UP:	   usage->hat_dir = 1; break;
  					case HID_GD_DOWN:  usage->hat_dir = 5; break;
  					case HID_GD_RIGHT: usage->hat_dir = 3; break;
  					case HID_GD_LEFT:  usage->hat_dir = 7; break;
  					default: goto unknown;
  				}
  				if (field->dpad) {
  					map_abs(field->dpad);
  					goto ignore;
  				}
  				map_abs(ABS_HAT0X);
  				break;
  			}
  
  			switch (usage->hid) {
  
  				/* These usage IDs map directly to the usage codes. */
  				case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
  				case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
  				case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
  					if (field->flags & HID_MAIN_ITEM_RELATIVE)

  						map_rel(usage->hid & 0xf);

  					else

  						map_abs(usage->hid & 0xf);

  					break;
  
  				case HID_GD_HATSWITCH:
  					usage->hat_min = field->logical_minimum;
  					usage->hat_max = field->logical_maximum;
  					map_abs(ABS_HAT0X);
  					break;
  
  				case HID_GD_START:	map_key_clear(BTN_START);	break;
  				case HID_GD_SELECT:	map_key_clear(BTN_SELECT);	break;
  
  				default: goto unknown;
  			}
  
  			break;
  
  		case HID_UP_LED:

  
  			switch (usage->hid & 0xffff) {                        /* HID-Value:                   */
  				case 0x01:  map_led (LED_NUML);     break;    /*   "Num Lock"                 */
  				case 0x02:  map_led (LED_CAPSL);    break;    /*   "Caps Lock"                */
  				case 0x03:  map_led (LED_SCROLLL);  break;    /*   "Scroll Lock"              */
  				case 0x04:  map_led (LED_COMPOSE);  break;    /*   "Compose"                  */
  				case 0x05:  map_led (LED_KANA);     break;    /*   "Kana"                     */
  				case 0x27:  map_led (LED_SLEEP);    break;    /*   "Stand-By"                 */
  				case 0x4c:  map_led (LED_SUSPEND);  break;    /*   "System Suspend"           */
  				case 0x09:  map_led (LED_MUTE);     break;    /*   "Mute"                     */
  				case 0x4b:  map_led (LED_MISC);     break;    /*   "Generic Indicator"        */
  				case 0x19:  map_led (LED_MAIL);     break;    /*   "Message Waiting"          */
  				case 0x4d:  map_led (LED_CHARGING); break;    /*   "External Power Connected" */
  
  				default: goto ignore;
  			}

  			break;
  
  		case HID_UP_DIGITIZER:
  
  			switch (usage->hid & 0xff) {
  
  				case 0x30: /* TipPressure */
  					if (!test_bit(BTN_TOUCH, input->keybit)) {
  						device->quirks |= HID_QUIRK_NOTOUCH;
  						set_bit(EV_KEY, input->evbit);
  						set_bit(BTN_TOUCH, input->keybit);
  					}
  
  					map_abs_clear(ABS_PRESSURE);
  					break;
  
  				case 0x32: /* InRange */
  					switch (field->physical & 0xff) {
  						case 0x21: map_key(BTN_TOOL_MOUSE); break;
  						case 0x22: map_key(BTN_TOOL_FINGER); break;
  						default: map_key(BTN_TOOL_PEN); break;
  					}
  					break;
  
  				case 0x3c: /* Invert */
  					map_key_clear(BTN_TOOL_RUBBER);
  					break;
  
  				case 0x33: /* Touch */
  				case 0x42: /* TipSwitch */
  				case 0x43: /* TipSwitch2 */
  					device->quirks &= ~HID_QUIRK_NOTOUCH;
  					map_key_clear(BTN_TOUCH);
  					break;
  
  				case 0x44: /* BarrelSwitch */
  					map_key_clear(BTN_STYLUS);
  					break;
  
  				default:  goto unknown;
  			}
  			break;
  
  		case HID_UP_CONSUMER:	/* USB HUT v1.1, pages 56-62 */
  
  			switch (usage->hid & HID_USAGE) {
  				case 0x000: goto ignore;
  				case 0x034: map_key_clear(KEY_SLEEP);		break;
  				case 0x036: map_key_clear(BTN_MISC);		break;

  				/*
  				 * The next three are reported by Belkin wireless
  				 * keyboard (1020:0006). These values are "reserved"
  				 * in HUT 1.12.
  				 */
  				case 0x03a: map_key_clear(KEY_SOUND);           break;
  				case 0x03b: map_key_clear(KEY_CAMERA);          break;
  				case 0x03c: map_key_clear(KEY_DOCUMENTS);       break;

  				case 0x040: map_key_clear(KEY_MENU);		break;

  				case 0x045: map_key_clear(KEY_RADIO);		break;

  				case 0x083: map_key_clear(KEY_LAST);		break;

  				case 0x088: map_key_clear(KEY_PC);		break;
  				case 0x089: map_key_clear(KEY_TV);		break;

  				case 0x08a: map_key_clear(KEY_WWW);		break;

  				case 0x08b: map_key_clear(KEY_DVD);		break;
  				case 0x08c: map_key_clear(KEY_PHONE);		break;

  				case 0x08d: map_key_clear(KEY_PROGRAM);		break;

  				case 0x08e: map_key_clear(KEY_VIDEOPHONE);	break;
  				case 0x08f: map_key_clear(KEY_GAMES);		break;
  				case 0x090: map_key_clear(KEY_MEMO);		break;
  				case 0x091: map_key_clear(KEY_CD);		break;
  				case 0x092: map_key_clear(KEY_VCR);		break;
  				case 0x093: map_key_clear(KEY_TUNER);		break;
  				case 0x094: map_key_clear(KEY_EXIT);		break;

  				case 0x095: map_key_clear(KEY_HELP);		break;

  				case 0x096: map_key_clear(KEY_TAPE);		break;
  				case 0x097: map_key_clear(KEY_TV2);		break;
  				case 0x098: map_key_clear(KEY_SAT);		break;

  				case 0x09a: map_key_clear(KEY_PVR);		break;

  				case 0x09c: map_key_clear(KEY_CHANNELUP);	break;
  				case 0x09d: map_key_clear(KEY_CHANNELDOWN);	break;

  				case 0x0a0: map_key_clear(KEY_VCR2);		break;

  				case 0x0b0: map_key_clear(KEY_PLAY);		break;
  				case 0x0b1: map_key_clear(KEY_PAUSE);		break;
  				case 0x0b2: map_key_clear(KEY_RECORD);		break;
  				case 0x0b3: map_key_clear(KEY_FASTFORWARD);	break;
  				case 0x0b4: map_key_clear(KEY_REWIND);		break;
  				case 0x0b5: map_key_clear(KEY_NEXTSONG);	break;
  				case 0x0b6: map_key_clear(KEY_PREVIOUSSONG);	break;
  				case 0x0b7: map_key_clear(KEY_STOPCD);		break;
  				case 0x0b8: map_key_clear(KEY_EJECTCD);		break;

  				case 0x0cd: map_key_clear(KEY_PLAYPAUSE);	break;
  			        case 0x0e0: map_abs_clear(ABS_VOLUME);		break;
  				case 0x0e2: map_key_clear(KEY_MUTE);		break;
  				case 0x0e5: map_key_clear(KEY_BASSBOOST);	break;
  				case 0x0e9: map_key_clear(KEY_VOLUMEUP);	break;
  				case 0x0ea: map_key_clear(KEY_VOLUMEDOWN);	break;

  
  				/* reserved in HUT 1.12. Reported on Petalynx remote */
  				case 0x0f6: map_key_clear(KEY_NEXT);		break;
  				case 0x0fa: map_key_clear(KEY_BACK);		break;

  				case 0x183: map_key_clear(KEY_CONFIG);		break;

  				case 0x184: map_key_clear(KEY_WORDPROCESSOR);	break;
  				case 0x185: map_key_clear(KEY_EDITOR);		break;
  				case 0x186: map_key_clear(KEY_SPREADSHEET);	break;
  				case 0x187: map_key_clear(KEY_GRAPHICSEDITOR);	break;
  				case 0x188: map_key_clear(KEY_PRESENTATION);	break;
  				case 0x189: map_key_clear(KEY_DATABASE);	break;

  				case 0x18a: map_key_clear(KEY_MAIL);		break;

  				case 0x18b: map_key_clear(KEY_NEWS);		break;
  				case 0x18c: map_key_clear(KEY_VOICEMAIL);	break;
  				case 0x18d: map_key_clear(KEY_ADDRESSBOOK);	break;
  				case 0x18e: map_key_clear(KEY_CALENDAR);	break;
  				case 0x191: map_key_clear(KEY_FINANCE);		break;

  				case 0x192: map_key_clear(KEY_CALC);		break;
  				case 0x194: map_key_clear(KEY_FILE);		break;

  				case 0x196: map_key_clear(KEY_WWW);		break;
  				case 0x19e: map_key_clear(KEY_COFFEE);		break;
  				case 0x1a6: map_key_clear(KEY_HELP);		break;

  				case 0x1a7: map_key_clear(KEY_DOCUMENTS);	break;

  				case 0x1bc: map_key_clear(KEY_MESSENGER);	break;
  				case 0x1bd: map_key_clear(KEY_INFO);		break;

  				case 0x201: map_key_clear(KEY_NEW);		break;

  				case 0x202: map_key_clear(KEY_OPEN);		break;
  				case 0x203: map_key_clear(KEY_CLOSE);		break;
  				case 0x204: map_key_clear(KEY_EXIT);		break;

  				case 0x207: map_key_clear(KEY_SAVE);		break;
  				case 0x208: map_key_clear(KEY_PRINT);		break;
  				case 0x209: map_key_clear(KEY_PROPS);		break;
  				case 0x21a: map_key_clear(KEY_UNDO);		break;
  				case 0x21b: map_key_clear(KEY_COPY);		break;
  				case 0x21c: map_key_clear(KEY_CUT);		break;
  				case 0x21d: map_key_clear(KEY_PASTE);		break;

  				case 0x21f: map_key_clear(KEY_FIND);		break;
  				case 0x221: map_key_clear(KEY_SEARCH);		break;
  				case 0x222: map_key_clear(KEY_GOTO);		break;

  				case 0x223: map_key_clear(KEY_HOMEPAGE);	break;
  				case 0x224: map_key_clear(KEY_BACK);		break;
  				case 0x225: map_key_clear(KEY_FORWARD);		break;
  				case 0x226: map_key_clear(KEY_STOP);		break;
  				case 0x227: map_key_clear(KEY_REFRESH);		break;
  				case 0x22a: map_key_clear(KEY_BOOKMARKS);	break;

  				case 0x22d: map_key_clear(KEY_ZOOMIN);		break;
  				case 0x22e: map_key_clear(KEY_ZOOMOUT);		break;
  				case 0x22f: map_key_clear(KEY_ZOOMRESET);	break;

  				case 0x233: map_key_clear(KEY_SCROLLUP);	break;
  				case 0x234: map_key_clear(KEY_SCROLLDOWN);	break;

  				case 0x238: map_rel(REL_HWHEEL);		break;

  				case 0x25f: map_key_clear(KEY_CANCEL);		break;

  				case 0x279: map_key_clear(KEY_REDO);		break;

  				case 0x289: map_key_clear(KEY_REPLY);		break;
  				case 0x28b: map_key_clear(KEY_FORWARDMAIL);	break;
  				case 0x28c: map_key_clear(KEY_SEND);		break;
  
  				/* Reported on a Cherry Cymotion keyboard */
  				case 0x301: map_key_clear(KEY_PROG1);		break;
  				case 0x302: map_key_clear(KEY_PROG2);		break;
  				case 0x303: map_key_clear(KEY_PROG3);		break;

  				/* Reported on certain Logitech wireless keyboards */
  				case 0x1001: map_key_clear(KEY_MESSENGER);	break;
  				case 0x1003: map_key_clear(KEY_SOUND);		break;
  				case 0x1004: map_key_clear(KEY_VIDEO);		break;
  				case 0x1005: map_key_clear(KEY_AUDIO);		break;
  				case 0x100a: map_key_clear(KEY_DOCUMENTS);	break;
  				case 0x1011: map_key_clear(KEY_PREVIOUSSONG);	break;
  				case 0x1012: map_key_clear(KEY_NEXTSONG);	break;
  				case 0x1013: map_key_clear(KEY_CAMERA);		break;
  				case 0x1014: map_key_clear(KEY_MESSENGER);	break;
  				case 0x1015: map_key_clear(KEY_RECORD);		break;
  				case 0x1016: map_key_clear(KEY_PLAYER);		break;
  				case 0x1017: map_key_clear(KEY_EJECTCD);	break;

  				case 0x1018: map_key_clear(KEY_MEDIA);          break;

  				case 0x1019: map_key_clear(KEY_PROG1);		break;
  				case 0x101a: map_key_clear(KEY_PROG2);		break;
  				case 0x101b: map_key_clear(KEY_PROG3);		break;

  				case 0x101f: map_key_clear(KEY_ZOOMIN);		break;
  				case 0x1020: map_key_clear(KEY_ZOOMOUT);	break;
  				case 0x1021: map_key_clear(KEY_ZOOMRESET);	break;

  				case 0x1023: map_key_clear(KEY_CLOSE);		break;

  				case 0x1027: map_key_clear(KEY_MENU);           break;

  				/* this one is marked as 'Rotate' */
  				case 0x1028: map_key_clear(KEY_ANGLE);		break;
  				case 0x1029: map_key_clear(KEY_SHUFFLE);	break;

  				case 0x102a: map_key_clear(KEY_BACK);           break;
  				case 0x102b: map_key_clear(KEY_CYCLEWINDOWS);   break;

  				case 0x1041: map_key_clear(KEY_BATTERY);	break;
  				case 0x1042: map_key_clear(KEY_WORDPROCESSOR);	break;
  				case 0x1043: map_key_clear(KEY_SPREADSHEET);	break;
  				case 0x1044: map_key_clear(KEY_PRESENTATION);	break;
  				case 0x1045: map_key_clear(KEY_UNDO);		break;
  				case 0x1046: map_key_clear(KEY_REDO);		break;
  				case 0x1047: map_key_clear(KEY_PRINT);		break;
  				case 0x1048: map_key_clear(KEY_SAVE);		break;
  				case 0x1049: map_key_clear(KEY_PROG1);		break;
  				case 0x104a: map_key_clear(KEY_PROG2);		break;
  				case 0x104b: map_key_clear(KEY_PROG3);		break;
  				case 0x104c: map_key_clear(KEY_PROG4);		break;

  				default:    goto ignore;
  			}
  			break;
  
  		case HID_UP_HPVENDOR:	/* Reported on a Dutch layout HP5308 */
  
  			set_bit(EV_REP, input->evbit);
  			switch (usage->hid & HID_USAGE) {
  			        case 0x021: map_key_clear(KEY_PRINT);           break;
  				case 0x070: map_key_clear(KEY_HP);		break;
  				case 0x071: map_key_clear(KEY_CAMERA);		break;
  				case 0x072: map_key_clear(KEY_SOUND);		break;
  				case 0x073: map_key_clear(KEY_QUESTION);	break;
  				case 0x080: map_key_clear(KEY_EMAIL);		break;
  				case 0x081: map_key_clear(KEY_CHAT);		break;
  				case 0x082: map_key_clear(KEY_SEARCH);		break;
  				case 0x083: map_key_clear(KEY_CONNECT);	        break;
  				case 0x084: map_key_clear(KEY_FINANCE);		break;
  				case 0x085: map_key_clear(KEY_SPORT);		break;
  				case 0x086: map_key_clear(KEY_SHOP);	        break;
  				default:    goto ignore;
  			}
  			break;
  
  		case HID_UP_MSVENDOR:

  
  			/* special case - Chicony Chicony KU-0418 tactical pad */
  			if (device->vendor == 0x04f2 && device->product == 0x0418) {
  				set_bit(EV_REP, input->evbit);
  				switch(usage->hid & HID_USAGE) {
  					case 0xff01: map_key_clear(BTN_1);		break;
  					case 0xff02: map_key_clear(BTN_2);		break;
  					case 0xff03: map_key_clear(BTN_3);		break;
  					case 0xff04: map_key_clear(BTN_4);		break;
  					case 0xff05: map_key_clear(BTN_5);		break;
  					case 0xff06: map_key_clear(BTN_6);		break;
  					case 0xff07: map_key_clear(BTN_7);		break;
  					case 0xff08: map_key_clear(BTN_8);		break;
  					case 0xff09: map_key_clear(BTN_9);		break;
  					case 0xff0a: map_key_clear(BTN_A);		break;
  					case 0xff0b: map_key_clear(BTN_B);		break;
  					default:    goto ignore;
  				}
  			} else {
  				goto ignore;
  			}
  			break;

  
  		case HID_UP_CUSTOM: /* Reported on Logitech and Powerbook USB keyboards */
  
  			set_bit(EV_REP, input->evbit);
  			switch(usage->hid & HID_USAGE) {
  				case 0x003:
  					/* The fn key on Apple PowerBooks */
  					map_key_clear(KEY_FN);
  					hidinput_pb_setup(input);
  					break;
  
  				default:    goto ignore;
  			}
  			break;

  		case HID_UP_LOGIVENDOR:

  			set_bit(EV_REP, input->evbit);
  			switch(usage->hid & HID_USAGE) {

  				/* Reported on Logitech Ultra X Media Remote */

  				case 0x004: map_key_clear(KEY_AGAIN);		break;
  				case 0x00d: map_key_clear(KEY_HOME);		break;
  				case 0x024: map_key_clear(KEY_SHUFFLE);		break;
  				case 0x025: map_key_clear(KEY_TV);		break;
  				case 0x026: map_key_clear(KEY_MENU);		break;
  				case 0x031: map_key_clear(KEY_AUDIO);		break;
  				case 0x032: map_key_clear(KEY_TEXT);		break;
  				case 0x033: map_key_clear(KEY_LAST);		break;
  				case 0x047: map_key_clear(KEY_MP3);		break;
  				case 0x048: map_key_clear(KEY_DVD);		break;
  				case 0x049: map_key_clear(KEY_MEDIA);		break;
  				case 0x04a: map_key_clear(KEY_VIDEO);		break;
  				case 0x04b: map_key_clear(KEY_ANGLE);		break;
  				case 0x04c: map_key_clear(KEY_LANGUAGE);	break;
  				case 0x04d: map_key_clear(KEY_SUBTITLE);	break;
  				case 0x051: map_key_clear(KEY_RED);		break;
  				case 0x052: map_key_clear(KEY_CLOSE);		break;

  
  				/* Reported on Petalynx Maxter remote */
  				case 0x05a: map_key_clear(KEY_TEXT);		break;
  				case 0x05b: map_key_clear(KEY_RED);		break;
  				case 0x05c: map_key_clear(KEY_GREEN);		break;
  				case 0x05d: map_key_clear(KEY_YELLOW);		break;
  				case 0x05e: map_key_clear(KEY_BLUE);		break;

  				default:    goto ignore;
  			}
  			break;
  
  		case HID_UP_PID:
  
  			switch(usage->hid & HID_USAGE) {
  				case 0xa4: map_key_clear(BTN_DEAD);	break;
  				default: goto ignore;
  			}
  			break;
  
  		default:
  		unknown:
  			if (field->report_size == 1) {
  				if (field->report->type == HID_OUTPUT_REPORT) {
  					map_led(LED_MISC);
  					break;
  				}
  				map_key(BTN_MISC);
  				break;
  			}
  			if (field->flags & HID_MAIN_ITEM_RELATIVE) {
  				map_rel(REL_MISC);
  				break;
  			}
  			map_abs(ABS_MISC);
  			break;
  	}
  
  	if (device->quirks & HID_QUIRK_MIGHTYMOUSE) {
  		if (usage->hid == HID_GD_Z)
  			map_rel(REL_HWHEEL);
  		else if (usage->code == BTN_1)
  			map_key(BTN_2);
  		else if (usage->code == BTN_2)
  			map_key(BTN_1);
  	}
  
  	if ((device->quirks & (HID_QUIRK_2WHEEL_MOUSE_HACK_7 | HID_QUIRK_2WHEEL_MOUSE_HACK_5)) &&
  		 (usage->type == EV_REL) && (usage->code == REL_WHEEL))
  			set_bit(REL_HWHEEL, bit);
  
  	if (((device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_5) && (usage->hid == 0x00090005))
  		|| ((device->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_7) && (usage->hid == 0x00090007)))
  		goto ignore;
  
  	if ((device->quirks & HID_QUIRK_BAD_RELATIVE_KEYS) &&
  		usage->type == EV_KEY && (field->flags & HID_MAIN_ITEM_RELATIVE))
  		field->flags &= ~HID_MAIN_ITEM_RELATIVE;
  
  	set_bit(usage->type, input->evbit);

  	if (device->quirks & HID_QUIRK_DUPLICATE_USAGES &&
  			(usage->type == EV_KEY ||
  			 usage->type == EV_REL ||
  			 usage->type == EV_ABS))
  		clear_bit(usage->code, bit);

  	while (usage->code <= max && test_and_set_bit(usage->code, bit))
  		usage->code = find_next_zero_bit(bit, max + 1, usage->code);
  
  	if (usage->code > max)
  		goto ignore;
  
  
  	if (usage->type == EV_ABS) {
  
  		int a = field->logical_minimum;
  		int b = field->logical_maximum;
  
  		if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
  			a = field->logical_minimum = 0;
  			b = field->logical_maximum = 255;
  		}
  
  		if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
  			input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
  		else	input_set_abs_params(input, usage->code, a, b, 0, 0);
  
  	}
  
  	if (usage->type == EV_ABS &&
  	    (usage->hat_min < usage->hat_max || usage->hat_dir)) {
  		int i;
  		for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
  			input_set_abs_params(input, i, -1, 1, 0, 0);
  			set_bit(i, input->absbit);
  		}
  		if (usage->hat_dir && !field->dpad)
  			field->dpad = usage->code;
  	}

  	/* for those devices which produce Consumer volume usage as relative,
  	 * we emulate pressing volumeup/volumedown appropriate number of times
  	 * in hidinput_hid_event()
  	 */
  	if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
  			(usage->code == ABS_VOLUME)) {
  		set_bit(KEY_VOLUMEUP, input->keybit);
  		set_bit(KEY_VOLUMEDOWN, input->keybit);
  	}

  	hid_resolv_event(usage->type, usage->code);

  
  	dbg_hid_line("
  ");

  	return;
  
  ignore:

  	dbg_hid_line("IGNORED
  ");

  	return;
  }
  
  void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
  {
  	struct input_dev *input;
  	int *quirks = &hid->quirks;
  
  	if (!field->hidinput)
  		return;
  
  	input = field->hidinput->input;
  
  	if (!usage->type)
  		return;
  
  	if (((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_5) && (usage->hid == 0x00090005))
  		|| ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_7) && (usage->hid == 0x00090007))) {
  		if (value) hid->quirks |=  HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
  		else       hid->quirks &= ~HID_QUIRK_2WHEEL_MOUSE_HACK_ON;
  		return;
  	}
  
  	if ((hid->quirks & HID_QUIRK_INVERT_HWHEEL) && (usage->code == REL_HWHEEL)) {
  		input_event(input, usage->type, usage->code, -value);
  		return;
  	}
  
  	if ((hid->quirks & HID_QUIRK_2WHEEL_MOUSE_HACK_ON) && (usage->code == REL_WHEEL)) {
  		input_event(input, usage->type, REL_HWHEEL, value);
  		return;
  	}
  
  	if ((hid->quirks & HID_QUIRK_POWERBOOK_HAS_FN) && hidinput_pb_event(hid, input, usage, value))
  		return;
  
  	if (usage->hat_min < usage->hat_max || usage->hat_dir) {
  		int hat_dir = usage->hat_dir;
  		if (!hat_dir)
  			hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
  		if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
  		input_event(input, usage->type, usage->code    , hid_hat_to_axis[hat_dir].x);
                  input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
                  return;
          }
  
  	if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
  		*quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
  		return;
  	}
  
  	if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
  		if (value) {
  			input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
  			return;
  		}
  		input_event(input, usage->type, usage->code, 0);
  		input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
  		return;
  	}
  
  	if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
  		int a = field->logical_minimum;
  		int b = field->logical_maximum;
  		input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
  	}
  
  	if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */

  		dbg_hid("Maximum Effects - %d
  ",value);

  		return;
  	}
  
  	if (usage->hid == (HID_UP_PID | 0x7fUL)) {

  		dbg_hid("PID Pool Report
  ");

  		return;
  	}
  
  	if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
  		return;

  	if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
  			(usage->code == ABS_VOLUME)) {
  		int count = abs(value);
  		int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
  		int i;
  
  		for (i = 0; i < count; i++) {
  			input_event(input, EV_KEY, direction, 1);
  			input_sync(input);
  			input_event(input, EV_KEY, direction, 0);
  			input_sync(input);
  		}
  		return;
  	}

  	input_event(input, usage->type, usage->code, value);
  
  	if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
  		input_event(input, usage->type, usage->code, 0);
  }
  
  void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
  {
  	struct hid_input *hidinput;
  
  	list_for_each_entry(hidinput, &hid->inputs, list)
  		input_sync(hidinput->input);
  }

  EXPORT_SYMBOL_GPL(hidinput_report_event);

  int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)

  {
  	struct hid_report *report;
  	int i, j;
  
  	list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
  		for (i = 0; i < report->maxfield; i++) {
  			*field = report->field[i];
  			for (j = 0; j < (*field)->maxusage; j++)
  				if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
  					return j;
  		}
  	}
  	return -1;
  }

  EXPORT_SYMBOL_GPL(hidinput_find_field);

  static int hidinput_open(struct input_dev *dev)
  {

  	struct hid_device *hid = input_get_drvdata(dev);

  	return hid->hid_open(hid);
  }
  
  static void hidinput_close(struct input_dev *dev)
  {

  	struct hid_device *hid = input_get_drvdata(dev);

  	hid->hid_close(hid);
  }

  /*
   * Register the input device; print a message.
   * Configure the input layer interface
   * Read all reports and initialize the absolute field values.
   */
  
  int hidinput_connect(struct hid_device *hid)
  {

  	struct hid_report *report;
  	struct hid_input *hidinput = NULL;
  	struct input_dev *input_dev;
  	int i, j, k;

  	int max_report_type = HID_OUTPUT_REPORT;

  
  	INIT_LIST_HEAD(&hid->inputs);
  
  	for (i = 0; i < hid->maxcollection; i++)
  		if (hid->collection[i].type == HID_COLLECTION_APPLICATION ||
  		    hid->collection[i].type == HID_COLLECTION_PHYSICAL)
  			if (IS_INPUT_APPLICATION(hid->collection[i].usage))
  				break;

  	if (i == hid->maxcollection && (hid->quirks & HID_QUIRK_HIDINPUT) == 0)

  		return -1;

  	if (hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
  		max_report_type = HID_INPUT_REPORT;
  
  	for (k = HID_INPUT_REPORT; k <= max_report_type; k++)

  		list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
  
  			if (!report->maxfield)
  				continue;
  
  			if (!hidinput) {
  				hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
  				input_dev = input_allocate_device();
  				if (!hidinput || !input_dev) {
  					kfree(hidinput);
  					input_free_device(input_dev);

  					err_hid("Out of memory during hid input probe");

  					return -1;
  				}

  				input_set_drvdata(input_dev, hid);

  				input_dev->event = hid->hidinput_input_event;

  				input_dev->open = hidinput_open;
  				input_dev->close = hidinput_close;

  				input_dev->setkeycode = hidinput_setkeycode;
  				input_dev->getkeycode = hidinput_getkeycode;

  
  				input_dev->name = hid->name;
  				input_dev->phys = hid->phys;
  				input_dev->uniq = hid->uniq;

  				input_dev->id.bustype = hid->bus;
  				input_dev->id.vendor  = hid->vendor;
  				input_dev->id.product = hid->product;
  				input_dev->id.version = hid->version;

  				input_dev->dev.parent = hid->dev;

  				hidinput->input = input_dev;
  				list_add_tail(&hidinput->list, &hid->inputs);
  			}
  
  			for (i = 0; i < report->maxfield; i++)
  				for (j = 0; j < report->field[i]->maxusage; j++)
  					hidinput_configure_usage(hidinput, report->field[i],
  								 report->field[i]->usage + j);
  
  			if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
  				/* This will leave hidinput NULL, so that it
  				 * allocates another one if we have more inputs on
  				 * the same interface. Some devices (e.g. Happ's
  				 * UGCI) cram a lot of unrelated inputs into the
  				 * same interface. */
  				hidinput->report = report;
  				input_register_device(hidinput->input);
  				hidinput = NULL;
  			}
  		}

  	if (hidinput)

  		input_register_device(hidinput->input);

  
  	return 0;
  }

  EXPORT_SYMBOL_GPL(hidinput_connect);

  
  void hidinput_disconnect(struct hid_device *hid)
  {
  	struct hid_input *hidinput, *next;
  
  	list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
  		list_del(&hidinput->list);
  		input_unregister_device(hidinput->input);
  		kfree(hidinput);
  	}
  }

  EXPORT_SYMBOL_GPL(hidinput_disconnect);