/*

   *  Copyright (c) 2000-2001 Vojtech Pavlik

   *  Copyright (c) 2006-2010 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>

  #include "hid-ids.h"

  #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,111,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,179,180,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,111,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
  };
  
  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)	hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
  #define map_rel(c)	hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
  #define map_key(c)	hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
  #define map_led(c)	hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))

  #define map_abs_clear(c)	hid_map_usage_clear(hidinput, usage, &bit, \
  		&max, EV_ABS, (c))
  #define map_key_clear(c)	hid_map_usage_clear(hidinput, usage, &bit, \
  		&max, EV_KEY, (c))

  static bool match_scancode(struct hid_usage *usage,
  			   unsigned int cur_idx, unsigned int scancode)

  {

  	return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;

  }

  static bool match_keycode(struct hid_usage *usage,
  			  unsigned int cur_idx, unsigned int keycode)

  {

  	/*
  	 * We should exclude unmapped usages when doing lookup by keycode.
  	 */
  	return (usage->type == EV_KEY && usage->code == keycode);

  }

  static bool match_index(struct hid_usage *usage,
  			unsigned int cur_idx, unsigned int idx)
  {
  	return cur_idx == idx;

  }

  typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
  				unsigned int cur_idx, unsigned int val);

  static struct hid_usage *hidinput_find_key(struct hid_device *hid,

  					   hid_usage_cmp_t match,
  					   unsigned int value,
  					   unsigned int *usage_idx)

  {

  	unsigned int i, j, k, cur_idx = 0;

  	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 || usage->type == 0) {

  						if (match(usage, cur_idx, value)) {
  							if (usage_idx)
  								*usage_idx = cur_idx;
  							return usage;
  						}
  						cur_idx++;
  					}

  				}
  			}
  		}
  	}
  	return NULL;
  }

  static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
  					const struct input_keymap_entry *ke,
  					unsigned int *index)
  {
  	struct hid_usage *usage;
  	unsigned int scancode;
  
  	if (ke->flags & INPUT_KEYMAP_BY_INDEX)
  		usage = hidinput_find_key(hid, match_index, ke->index, index);
  	else if (input_scancode_to_scalar(ke, &scancode) == 0)
  		usage = hidinput_find_key(hid, match_scancode, scancode, index);
  	else
  		usage = NULL;
  
  	return usage;
  }

  static int hidinput_getkeycode(struct input_dev *dev,

  			       struct input_keymap_entry *ke)

  {

  	struct hid_device *hid = input_get_drvdata(dev);

  	struct hid_usage *usage;

  	unsigned int scancode, index;

  	usage = hidinput_locate_usage(hid, ke, &index);

  	if (usage) {

  		ke->keycode = usage->type == EV_KEY ?
  				usage->code : KEY_RESERVED;

  		ke->index = index;
  		scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
  		ke->len = sizeof(scancode);
  		memcpy(ke->scancode, &scancode, sizeof(scancode));

  		return 0;
  	}

  	return -EINVAL;
  }

  static int hidinput_setkeycode(struct input_dev *dev,

  			       const struct input_keymap_entry *ke,
  			       unsigned int *old_keycode)

  {

  	struct hid_device *hid = input_get_drvdata(dev);

  	struct hid_usage *usage;

  	usage = hidinput_locate_usage(hid, ke, NULL);

  	if (usage) {

  		*old_keycode = usage->type == EV_KEY ?
  				usage->code : KEY_RESERVED;

  		usage->code = ke->keycode;

  		clear_bit(*old_keycode, dev->keybit);

  		set_bit(usage->code, dev->keybit);

  		dbg_hid("Assigned keycode %d to HID usage code %x
  ",

  			usage->code, usage->hid);
  
  		/*
  		 * Set the keybit for the old keycode if the old keycode is used
  		 * by another key
  		 */
  		if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
  			set_bit(*old_keycode, dev->keybit);

  		return 0;
  	}

  	return -EINVAL;
  }

  /**
   * hidinput_calc_abs_res - calculate an absolute axis resolution
   * @field: the HID report field to calculate resolution for
   * @code: axis code
   *
   * The formula is:
   *                         (logical_maximum - logical_minimum)
   * resolution = ----------------------------------------------------------
   *              (physical_maximum - physical_minimum) * 10 ^ unit_exponent
   *
   * as seen in the HID specification v1.11 6.2.2.7 Global Items.
   *

   * Only exponent 1 length units are processed. Centimeters and inches are
   * converted to millimeters. Degrees are converted to radians.

   */
  static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
  {
  	__s32 unit_exponent = field->unit_exponent;
  	__s32 logical_extents = field->logical_maximum -
  					field->logical_minimum;
  	__s32 physical_extents = field->physical_maximum -
  					field->physical_minimum;
  	__s32 prev;
  
  	/* Check if the extents are sane */
  	if (logical_extents <= 0 || physical_extents <= 0)
  		return 0;
  
  	/*
  	 * Verify and convert units.
  	 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
  	 */
  	if (code == ABS_X || code == ABS_Y || code == ABS_Z) {
  		if (field->unit == 0x11) {		/* If centimeters */

  			/* Convert to millimeters */
  			unit_exponent += 1;
  		} else if (field->unit == 0x13) {	/* If inches */
  			/* Convert to millimeters */
  			prev = physical_extents;
  			physical_extents *= 254;
  			if (physical_extents < prev)

  				return 0;

  			unit_exponent -= 1;
  		} else {

  			return 0;
  		}
  	} else if (code == ABS_RX || code == ABS_RY || code == ABS_RZ) {
  		if (field->unit == 0x14) {		/* If degrees */
  			/* Convert to radians */
  			prev = logical_extents;
  			logical_extents *= 573;
  			if (logical_extents < prev)
  				return 0;
  			unit_exponent += 1;
  		} else if (field->unit != 0x12) {	/* If not radians */
  			return 0;
  		}
  	} else {
  		return 0;
  	}
  
  	/* Apply negative unit exponent */
  	for (; unit_exponent < 0; unit_exponent++) {
  		prev = logical_extents;
  		logical_extents *= 10;
  		if (logical_extents < prev)
  			return 0;
  	}
  	/* Apply positive unit exponent */
  	for (; unit_exponent > 0; unit_exponent--) {
  		prev = physical_extents;
  		physical_extents *= 10;
  		if (physical_extents < prev)
  			return 0;
  	}
  
  	/* Calculate resolution */
  	return logical_extents / physical_extents;
  }

  #ifdef CONFIG_HID_BATTERY_STRENGTH
  static enum power_supply_property hidinput_battery_props[] = {
  	POWER_SUPPLY_PROP_PRESENT,
  	POWER_SUPPLY_PROP_ONLINE,
  	POWER_SUPPLY_PROP_CAPACITY,
  	POWER_SUPPLY_PROP_MODEL_NAME,

  	POWER_SUPPLY_PROP_STATUS

  };

  #define HID_BATTERY_QUIRK_PERCENT	(1 << 0) /* always reports percent */

  #define HID_BATTERY_QUIRK_FEATURE	(1 << 1) /* ask for feature report */

  
  static const struct hid_device_id hid_battery_quirks[] = {

  	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
  			       USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
  	  HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },

  	{}
  };
  
  static unsigned find_battery_quirk(struct hid_device *hdev)
  {
  	unsigned quirks = 0;
  	const struct hid_device_id *match;
  
  	match = hid_match_id(hdev, hid_battery_quirks);
  	if (match != NULL)
  		quirks = match->driver_data;
  
  	return quirks;
  }

  static int hidinput_get_battery_property(struct power_supply *psy,
  					 enum power_supply_property prop,
  					 union power_supply_propval *val)
  {
  	struct hid_device *dev = container_of(psy, struct hid_device, battery);
  	int ret = 0;

  	__u8 buf[2] = {};

  
  	switch (prop) {
  	case POWER_SUPPLY_PROP_PRESENT:
  	case POWER_SUPPLY_PROP_ONLINE:
  		val->intval = 1;
  		break;
  
  	case POWER_SUPPLY_PROP_CAPACITY:

  		ret = dev->hid_get_raw_report(dev, dev->battery_report_id,
  					      buf, sizeof(buf),
  					      dev->battery_report_type);
  
  		if (ret != 2) {
  			if (ret >= 0)
  				ret = -EINVAL;

  			break;
  		}

  		if (dev->battery_min < dev->battery_max &&

  		    buf[1] >= dev->battery_min &&
  		    buf[1] <= dev->battery_max)
  			val->intval = (100 * (buf[1] - dev->battery_min)) /

  				(dev->battery_max - dev->battery_min);

  		break;
  
  	case POWER_SUPPLY_PROP_MODEL_NAME:
  		val->strval = dev->name;
  		break;

  	case POWER_SUPPLY_PROP_STATUS:
  		val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
  		break;

  	default:
  		ret = -EINVAL;
  		break;
  	}
  
  	return ret;
  }

  static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)

  {
  	struct power_supply *battery = &dev->battery;
  	int ret;

  	unsigned quirks;

  	s32 min, max;
  
  	if (field->usage->hid != HID_DC_BATTERYSTRENGTH)
  		return false;	/* no match */

  
  	if (battery->name != NULL)

  		goto out;	/* already initialized? */

  
  	battery->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq);
  	if (battery->name == NULL)

  		goto out;

  
  	battery->type = POWER_SUPPLY_TYPE_BATTERY;
  	battery->properties = hidinput_battery_props;
  	battery->num_properties = ARRAY_SIZE(hidinput_battery_props);
  	battery->use_for_apm = 0;
  	battery->get_property = hidinput_get_battery_property;

  	quirks = find_battery_quirk(dev);

  	hid_dbg(dev, "device %x:%x:%x %d quirks %d
  ",
  		dev->bus, dev->vendor, dev->product, dev->version, quirks);

  	min = field->logical_minimum;
  	max = field->logical_maximum;

  	if (quirks & HID_BATTERY_QUIRK_PERCENT) {
  		min = 0;
  		max = 100;
  	}

  	if (quirks & HID_BATTERY_QUIRK_FEATURE)
  		report_type = HID_FEATURE_REPORT;

  	dev->battery_min = min;
  	dev->battery_max = max;

  	dev->battery_report_type = report_type;

  	dev->battery_report_id = field->report->id;

  
  	ret = power_supply_register(&dev->dev, battery);
  	if (ret != 0) {
  		hid_warn(dev, "can't register power supply: %d
  ", ret);
  		kfree(battery->name);
  		battery->name = NULL;
  	}

  
  out:
  	return true;

  }
  
  static void hidinput_cleanup_battery(struct hid_device *dev)
  {
  	if (!dev->battery.name)
  		return;
  
  	power_supply_unregister(&dev->battery);
  	kfree(dev->battery.name);
  	dev->battery.name = NULL;
  }
  #else  /* !CONFIG_HID_BATTERY_STRENGTH */

  static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
  				   struct hid_field *field)

  {

  	return false;

  }
  
  static void hidinput_cleanup_battery(struct hid_device *dev)
  {
  }
  #endif	/* CONFIG_HID_BATTERY_STRENGTH */

  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;

  	if (field->flags & HID_MAIN_ITEM_CONSTANT)
  		goto ignore;

  	/* only LED usages are supported in output fields */
  	if (field->report_type == HID_OUTPUT_REPORT &&
  			(usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {

  		goto ignore;
  	}

  	if (device->driver->input_mapping) {
  		int ret = device->driver->input_mapping(device, hidinput, field,
  				usage, &bit, &max);
  		if (ret > 0)
  			goto mapped;
  		if (ret < 0)
  			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) & HID_USAGE);

  		switch (field->application) {
  		case HID_GD_MOUSE:

  		case HID_GD_POINTER:  code += BTN_MOUSE; break;

  		case HID_GD_JOYSTICK:

  				if (code <= 0xf)
  					code += BTN_JOYSTICK;
  				else
  					code += BTN_TRIGGER_HAPPY;
  				break;

  		case HID_GD_GAMEPAD:  code += BTN_GAMEPAD; break;

  		default:
  			switch (field->physical) {
  			case HID_GD_MOUSE:

  			case HID_GD_POINTER:  code += BTN_MOUSE; break;
  			case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
  			case HID_GD_GAMEPAD:  code += BTN_GAMEPAD; break;
  			default:              code += BTN_MISC;

  			}

  		}

  		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;

  			case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
  			case 0x5: map_key_clear(KEY_MENU); break;
  			case 0x6: map_key_clear(KEY_PROG1); break;
  			case 0x7: map_key_clear(KEY_HELP); break;
  			case 0x8: map_key_clear(KEY_EXIT); break;
  			case 0x9: map_key_clear(KEY_SELECT); break;
  			case 0xa: map_key_clear(KEY_RIGHT); break;
  			case 0xb: map_key_clear(KEY_LEFT); break;
  			case 0xc: map_key_clear(KEY_UP); break;
  			case 0xd: map_key_clear(KEY_DOWN); break;
  			case 0xe: map_key_clear(KEY_POWER2); break;
  			case 0xf: map_key_clear(KEY_RESTART); 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 0x00: /* Undefined */
  			goto ignore;

  		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;

  		case 0x46: /* TabletPick */
  			map_key_clear(BTN_STYLUS2);
  			break;

  		case 0x51: /* ContactID */
  			device->quirks |= HID_QUIRK_MULTITOUCH;
  			goto unknown;

  		default:  goto unknown;
  		}
  		break;

  	case HID_UP_CONSUMER:	/* USB HUT v1.12, pages 75-84 */

  		switch (usage->hid & HID_USAGE) {
  		case 0x000: goto ignore;

  		case 0x030: map_key_clear(KEY_POWER);		break;
  		case 0x031: map_key_clear(KEY_RESTART);		break;
  		case 0x032: map_key_clear(KEY_SLEEP);		break;

  		case 0x034: map_key_clear(KEY_SLEEP);		break;

  		case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE);	break;

  		case 0x036: map_key_clear(BTN_MISC);		break;

  		case 0x040: map_key_clear(KEY_MENU);		break; /* Menu */
  		case 0x041: map_key_clear(KEY_SELECT);		break; /* Menu Pick */
  		case 0x042: map_key_clear(KEY_UP);		break; /* Menu Up */
  		case 0x043: map_key_clear(KEY_DOWN);		break; /* Menu Down */
  		case 0x044: map_key_clear(KEY_LEFT);		break; /* Menu Left */
  		case 0x045: map_key_clear(KEY_RIGHT);		break; /* Menu Right */
  		case 0x046: map_key_clear(KEY_ESC);		break; /* Menu Escape */
  		case 0x047: map_key_clear(KEY_KPPLUS);		break; /* Menu Value Increase */
  		case 0x048: map_key_clear(KEY_KPMINUS);		break; /* Menu Value Decrease */
  
  		case 0x060: map_key_clear(KEY_INFO);		break; /* Data On Screen */
  		case 0x061: map_key_clear(KEY_SUBTITLE);	break; /* Closed Caption */
  		case 0x063: map_key_clear(KEY_VCR);		break; /* VCR/TV */
  		case 0x065: map_key_clear(KEY_CAMERA);		break; /* Snapshot */
  		case 0x069: map_key_clear(KEY_RED);		break;
  		case 0x06a: map_key_clear(KEY_GREEN);		break;
  		case 0x06b: map_key_clear(KEY_BLUE);		break;
  		case 0x06c: map_key_clear(KEY_YELLOW);		break;
  		case 0x06d: map_key_clear(KEY_ZOOM);		break;
  
  		case 0x082: map_key_clear(KEY_VIDEO_NEXT);	break;

  		case 0x083: map_key_clear(KEY_LAST);		break;

  		case 0x084: map_key_clear(KEY_ENTER);		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 0x0bc: map_key_clear(KEY_MEDIA_REPEAT);	break;

  		case 0x0b9: map_key_clear(KEY_SHUFFLE);		break;
  		case 0x0bf: map_key_clear(KEY_SLOW);		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;

  		case 0x0f5: map_key_clear(KEY_SLOW);		break;

  
  		case 0x182: map_key_clear(KEY_BOOKMARKS);	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 0x193: map_key_clear(KEY_PLAYER);		break;

  		case 0x194: map_key_clear(KEY_FILE);		break;
  		case 0x196: map_key_clear(KEY_WWW);		break;

  		case 0x199: map_key_clear(KEY_CHAT);		break;

  		case 0x19c: map_key_clear(KEY_LOGOFF);		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 0x1ab: map_key_clear(KEY_SPELLCHECK);	break;

  		case 0x1ae: map_key_clear(KEY_KEYBOARD);	break;
  		case 0x1b6: map_key_clear(KEY_IMAGES);		break;
  		case 0x1b7: map_key_clear(KEY_AUDIO);		break;
  		case 0x1b8: map_key_clear(KEY_VIDEO);		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 0x23d: map_key_clear(KEY_EDIT);		break;

  		case 0x25f: map_key_clear(KEY_CANCEL);		break;

  		case 0x269: map_key_clear(KEY_INSERT);		break;
  		case 0x26a: map_key_clear(KEY_DELETE);		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;
  
  		default:    goto ignore;
  		}
  		break;

  	case HID_UP_GENDEVCTRLS:

  		if (hidinput_setup_battery(device, HID_INPUT_REPORT, field))

  			goto ignore;

  		else

  			goto unknown;
  		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:
  		goto ignore;

  	case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
  		set_bit(EV_REP, input->evbit);
  		goto ignore;

  	case HID_UP_LOGIVENDOR:
  		goto ignore;

  	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;

  	}

  mapped:

  	if (device->driver->input_mapped && device->driver->input_mapped(device,
  				hidinput, field, usage, &bit, &max) < 0)
  		goto ignore;

  	set_bit(usage->type, input->evbit);
  
  	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);

  		input_abs_set_res(input, usage->code,
  				  hidinput_calc_abs_res(field, usage->code));

  		/* use a larger default input buffer for MT devices */
  		if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
  			input_set_events_per_packet(input, 60);

  	}
  
  	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);
  	}

  	if (usage->type == EV_KEY) {
  		set_bit(EV_MSC, input->evbit);
  		set_bit(MSC_SCAN, input->mscbit);
  	}

  ignore:

  	return;

  }
  
  void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
  {
  	struct input_dev *input;

  	unsigned *quirks = &hid->quirks;

  
  	if (!field->hidinput)
  		return;
  
  	input = field->hidinput->input;
  
  	if (!usage->type)
  		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;
  	}

  	/* Ignore out-of-range values as per HID specification, section 5.10 */
  	if (value < field->logical_minimum || value > field->logical_maximum) {

  		dbg_hid("Ignoring out-of-range value %x
  ", value);
  		return;
  	}

  	/* report the usage code as scancode if the key status has changed */
  	if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
  		input_event(input, EV_MSC, MSC_SCAN, usage->hid);

  	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;

  	if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
  		return;

  	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);

  struct hid_field *hidinput_get_led_field(struct hid_device *hid)
  {
  	struct hid_report *report;
  	struct hid_field *field;
  	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 == EV_LED)
  					return field;
  		}
  	}
  	return NULL;
  }
  EXPORT_SYMBOL_GPL(hidinput_get_led_field);
  
  unsigned int hidinput_count_leds(struct hid_device *hid)
  {
  	struct hid_report *report;
  	struct hid_field *field;
  	int i, j;
  	unsigned int count = 0;
  
  	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 == EV_LED &&
  				    field->value[j])
  					count += 1;
  		}
  	}
  	return count;
  }
  EXPORT_SYMBOL_GPL(hidinput_count_leds);

  static int hidinput_open(struct input_dev *dev)
  {

  	struct hid_device *hid = input_get_drvdata(dev);

  	return hid_hw_open(hid);

  }
  
  static void hidinput_close(struct input_dev *dev)
  {

  	struct hid_device *hid = input_get_drvdata(dev);

  	hid_hw_close(hid);

  }

  static void report_features(struct hid_device *hid)
  {
  	struct hid_driver *drv = hid->driver;
  	struct hid_report_enum *rep_enum;
  	struct hid_report *rep;
  	int i, j;

  	rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
  	list_for_each_entry(rep, &rep_enum->report_list, list)
  		for (i = 0; i < rep->maxfield; i++)

  			for (j = 0; j < rep->field[i]->maxusage; j++) {
  				/* Verify if Battery Strength feature is available */

  				hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);

  
  				if (drv->feature_mapping)
  					drv->feature_mapping(hid, rep->field[i],
  							     rep->field[i]->usage + j);
  			}

  }

  /*
   * 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, unsigned int force)

  {

  	struct hid_report *report;
  	struct hid_input *hidinput = NULL;
  	struct input_dev *input_dev;
  	int i, j, k;
  
  	INIT_LIST_HEAD(&hid->inputs);

  	if (!force) {
  		for (i = 0; i < hid->maxcollection; i++) {
  			struct hid_collection *col = &hid->collection[i];
  			if (col->type == HID_COLLECTION_APPLICATION ||
  					col->type == HID_COLLECTION_PHYSICAL)
  				if (IS_INPUT_APPLICATION(col->usage))
  					break;
  		}

  		if (i == hid->maxcollection)
  			return -1;
  	}

  	report_features(hid);
  
  	for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {

  		if (k == HID_OUTPUT_REPORT &&
  			hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
  			continue;

  		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);

  					hid_err(hid, "Out of memory during hid input probe
  ");

  					goto out_unwind;

  				}

  				input_set_drvdata(input_dev, hid);

  				input_dev->event =
  					hid->ll_driver->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.parent;

  				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;

  				if (input_register_device(hidinput->input))
  					goto out_cleanup;

  				hidinput = NULL;
  			}
  		}

  	}

  	if (hid->quirks & HID_QUIRK_MULTITOUCH) {
  		/* generic hid does not know how to handle multitouch devices */
  		if (hidinput)
  			goto out_cleanup;
  		goto out_unwind;
  	}

  	if (hidinput && input_register_device(hidinput->input))
  		goto out_cleanup;

  
  	return 0;

  
  out_cleanup:

  	list_del(&hidinput->list);

  	input_free_device(hidinput->input);
  	kfree(hidinput);
  out_unwind:
  	/* unwind the ones we already registered */
  	hidinput_disconnect(hid);
  
  	return -1;

  }

  EXPORT_SYMBOL_GPL(hidinput_connect);

  
  void hidinput_disconnect(struct hid_device *hid)
  {
  	struct hid_input *hidinput, *next;

  	hidinput_cleanup_battery(hid);

  	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);