linux/drivers/hid/hid-input.c
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   1/*
   2 *  Copyright (c) 2000-2001 Vojtech Pavlik
   3 *  Copyright (c) 2006-2010 Jiri Kosina
   4 *
   5 *  HID to Linux Input mapping
   6 */
   7
   8/*
   9 * This program is free software; you can redistribute it and/or modify
  10 * it under the terms of the GNU General Public License as published by
  11 * the Free Software Foundation; either version 2 of the License, or
  12 * (at your option) any later version.
  13 *
  14 * This program is distributed in the hope that it will be useful,
  15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
  16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  17 * GNU General Public License for more details.
  18 *
  19 * You should have received a copy of the GNU General Public License
  20 * along with this program; if not, write to the Free Software
  21 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
  22 *
  23 * Should you need to contact me, the author, you can do so either by
  24 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:
  25 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic
  26 */
  27
  28#include <linux/module.h>
  29#include <linux/slab.h>
  30#include <linux/kernel.h>
  31
  32#include <linux/hid.h>
  33#include <linux/hid-debug.h>
  34
  35#include "hid-ids.h"
  36
  37#define unk     KEY_UNKNOWN
  38
  39static const unsigned char hid_keyboard[256] = {
  40          0,  0,  0,  0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,
  41         50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44,  2,  3,
  42          4,  5,  6,  7,  8,  9, 10, 11, 28,  1, 14, 15, 57, 12, 13, 26,
  43         27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,
  44         65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,
  45        105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,
  46         72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,
  47        191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,
  48        115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,
  49        122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,
  50        unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  51        unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk,
  52        unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,
  53        unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk,
  54         29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,
  55        150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk
  56};
  57
  58static const struct {
  59        __s32 x;
  60        __s32 y;
  61}  hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};
  62
  63#define map_abs(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))
  64#define map_rel(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))
  65#define map_key(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))
  66#define map_led(c)      hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))
  67
  68#define map_abs_clear(c)        hid_map_usage_clear(hidinput, usage, &bit, \
  69                &max, EV_ABS, (c))
  70#define map_key_clear(c)        hid_map_usage_clear(hidinput, usage, &bit, \
  71                &max, EV_KEY, (c))
  72
  73static bool match_scancode(struct hid_usage *usage,
  74                           unsigned int cur_idx, unsigned int scancode)
  75{
  76        return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
  77}
  78
  79static bool match_keycode(struct hid_usage *usage,
  80                          unsigned int cur_idx, unsigned int keycode)
  81{
  82        /*
  83         * We should exclude unmapped usages when doing lookup by keycode.
  84         */
  85        return (usage->type == EV_KEY && usage->code == keycode);
  86}
  87
  88static bool match_index(struct hid_usage *usage,
  89                        unsigned int cur_idx, unsigned int idx)
  90{
  91        return cur_idx == idx;
  92}
  93
  94typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
  95                                unsigned int cur_idx, unsigned int val);
  96
  97static struct hid_usage *hidinput_find_key(struct hid_device *hid,
  98                                           hid_usage_cmp_t match,
  99                                           unsigned int value,
 100                                           unsigned int *usage_idx)
 101{
 102        unsigned int i, j, k, cur_idx = 0;
 103        struct hid_report *report;
 104        struct hid_usage *usage;
 105
 106        for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
 107                list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
 108                        for (i = 0; i < report->maxfield; i++) {
 109                                for (j = 0; j < report->field[i]->maxusage; j++) {
 110                                        usage = report->field[i]->usage + j;
 111                                        if (usage->type == EV_KEY || usage->type == 0) {
 112                                                if (match(usage, cur_idx, value)) {
 113                                                        if (usage_idx)
 114                                                                *usage_idx = cur_idx;
 115                                                        return usage;
 116                                                }
 117                                                cur_idx++;
 118                                        }
 119                                }
 120                        }
 121                }
 122        }
 123        return NULL;
 124}
 125
 126static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,
 127                                        const struct input_keymap_entry *ke,
 128                                        unsigned int *index)
 129{
 130        struct hid_usage *usage;
 131        unsigned int scancode;
 132
 133        if (ke->flags & INPUT_KEYMAP_BY_INDEX)
 134                usage = hidinput_find_key(hid, match_index, ke->index, index);
 135        else if (input_scancode_to_scalar(ke, &scancode) == 0)
 136                usage = hidinput_find_key(hid, match_scancode, scancode, index);
 137        else
 138                usage = NULL;
 139
 140        return usage;
 141}
 142
 143static int hidinput_getkeycode(struct input_dev *dev,
 144                               struct input_keymap_entry *ke)
 145{
 146        struct hid_device *hid = input_get_drvdata(dev);
 147        struct hid_usage *usage;
 148        unsigned int scancode, index;
 149
 150        usage = hidinput_locate_usage(hid, ke, &index);
 151        if (usage) {
 152                ke->keycode = usage->type == EV_KEY ?
 153                                usage->code : KEY_RESERVED;
 154                ke->index = index;
 155                scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
 156                ke->len = sizeof(scancode);
 157                memcpy(ke->scancode, &scancode, sizeof(scancode));
 158                return 0;
 159        }
 160
 161        return -EINVAL;
 162}
 163
 164static int hidinput_setkeycode(struct input_dev *dev,
 165                               const struct input_keymap_entry *ke,
 166                               unsigned int *old_keycode)
 167{
 168        struct hid_device *hid = input_get_drvdata(dev);
 169        struct hid_usage *usage;
 170
 171        usage = hidinput_locate_usage(hid, ke, NULL);
 172        if (usage) {
 173                *old_keycode = usage->type == EV_KEY ?
 174                                usage->code : KEY_RESERVED;
 175                usage->code = ke->keycode;
 176
 177                clear_bit(*old_keycode, dev->keybit);
 178                set_bit(usage->code, dev->keybit);
 179                dbg_hid("Assigned keycode %d to HID usage code %x\n",
 180                        usage->code, usage->hid);
 181
 182                /*
 183                 * Set the keybit for the old keycode if the old keycode is used
 184                 * by another key
 185                 */
 186                if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))
 187                        set_bit(*old_keycode, dev->keybit);
 188
 189                return 0;
 190        }
 191
 192        return -EINVAL;
 193}
 194
 195
 196/**
 197 * hidinput_calc_abs_res - calculate an absolute axis resolution
 198 * @field: the HID report field to calculate resolution for
 199 * @code: axis code
 200 *
 201 * The formula is:
 202 *                         (logical_maximum - logical_minimum)
 203 * resolution = ----------------------------------------------------------
 204 *              (physical_maximum - physical_minimum) * 10 ^ unit_exponent
 205 *
 206 * as seen in the HID specification v1.11 6.2.2.7 Global Items.
 207 *
 208 * Only exponent 1 length units are processed. Centimeters and inches are
 209 * converted to millimeters. Degrees are converted to radians.
 210 */
 211static __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
 212{
 213        __s32 unit_exponent = field->unit_exponent;
 214        __s32 logical_extents = field->logical_maximum -
 215                                        field->logical_minimum;
 216        __s32 physical_extents = field->physical_maximum -
 217                                        field->physical_minimum;
 218        __s32 prev;
 219
 220        /* Check if the extents are sane */
 221        if (logical_extents <= 0 || physical_extents <= 0)
 222                return 0;
 223
 224        /*
 225         * Verify and convert units.
 226         * See HID specification v1.11 6.2.2.7 Global Items for unit decoding
 227         */
 228        switch (code) {
 229        case ABS_X:
 230        case ABS_Y:
 231        case ABS_Z:
 232                if (field->unit == 0x11) {              /* If centimeters */
 233                        /* Convert to millimeters */
 234                        unit_exponent += 1;
 235                } else if (field->unit == 0x13) {       /* If inches */
 236                        /* Convert to millimeters */
 237                        prev = physical_extents;
 238                        physical_extents *= 254;
 239                        if (physical_extents < prev)
 240                                return 0;
 241                        unit_exponent -= 1;
 242                } else {
 243                        return 0;
 244                }
 245                break;
 246
 247        case ABS_RX:
 248        case ABS_RY:
 249        case ABS_RZ:
 250        case ABS_TILT_X:
 251        case ABS_TILT_Y:
 252                if (field->unit == 0x14) {              /* If degrees */
 253                        /* Convert to radians */
 254                        prev = logical_extents;
 255                        logical_extents *= 573;
 256                        if (logical_extents < prev)
 257                                return 0;
 258                        unit_exponent += 1;
 259                } else if (field->unit != 0x12) {       /* If not radians */
 260                        return 0;
 261                }
 262                break;
 263
 264        default:
 265                return 0;
 266        }
 267
 268        /* Apply negative unit exponent */
 269        for (; unit_exponent < 0; unit_exponent++) {
 270                prev = logical_extents;
 271                logical_extents *= 10;
 272                if (logical_extents < prev)
 273                        return 0;
 274        }
 275        /* Apply positive unit exponent */
 276        for (; unit_exponent > 0; unit_exponent--) {
 277                prev = physical_extents;
 278                physical_extents *= 10;
 279                if (physical_extents < prev)
 280                        return 0;
 281        }
 282
 283        /* Calculate resolution */
 284        return logical_extents / physical_extents;
 285}
 286
 287#ifdef CONFIG_HID_BATTERY_STRENGTH
 288static enum power_supply_property hidinput_battery_props[] = {
 289        POWER_SUPPLY_PROP_PRESENT,
 290        POWER_SUPPLY_PROP_ONLINE,
 291        POWER_SUPPLY_PROP_CAPACITY,
 292        POWER_SUPPLY_PROP_MODEL_NAME,
 293        POWER_SUPPLY_PROP_STATUS,
 294        POWER_SUPPLY_PROP_SCOPE,
 295};
 296
 297#define HID_BATTERY_QUIRK_PERCENT       (1 << 0) /* always reports percent */
 298#define HID_BATTERY_QUIRK_FEATURE       (1 << 1) /* ask for feature report */
 299
 300static const struct hid_device_id hid_battery_quirks[] = {
 301        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
 302                               USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
 303          HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
 304        { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
 305                USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
 306          HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
 307        {}
 308};
 309
 310static unsigned find_battery_quirk(struct hid_device *hdev)
 311{
 312        unsigned quirks = 0;
 313        const struct hid_device_id *match;
 314
 315        match = hid_match_id(hdev, hid_battery_quirks);
 316        if (match != NULL)
 317                quirks = match->driver_data;
 318
 319        return quirks;
 320}
 321
 322static int hidinput_get_battery_property(struct power_supply *psy,
 323                                         enum power_supply_property prop,
 324                                         union power_supply_propval *val)
 325{
 326        struct hid_device *dev = container_of(psy, struct hid_device, battery);
 327        int ret = 0;
 328        __u8 buf[2] = {};
 329
 330        switch (prop) {
 331        case POWER_SUPPLY_PROP_PRESENT:
 332        case POWER_SUPPLY_PROP_ONLINE:
 333                val->intval = 1;
 334                break;
 335
 336        case POWER_SUPPLY_PROP_CAPACITY:
 337                ret = dev->hid_get_raw_report(dev, dev->battery_report_id,
 338                                              buf, sizeof(buf),
 339                                              dev->battery_report_type);
 340
 341                if (ret != 2) {
 342                        if (ret >= 0)
 343                                ret = -EINVAL;
 344                        break;
 345                }
 346
 347                if (dev->battery_min < dev->battery_max &&
 348                    buf[1] >= dev->battery_min &&
 349                    buf[1] <= dev->battery_max)
 350                        val->intval = (100 * (buf[1] - dev->battery_min)) /
 351                                (dev->battery_max - dev->battery_min);
 352                break;
 353
 354        case POWER_SUPPLY_PROP_MODEL_NAME:
 355                val->strval = dev->name;
 356                break;
 357
 358        case POWER_SUPPLY_PROP_STATUS:
 359                val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
 360                break;
 361
 362        case POWER_SUPPLY_PROP_SCOPE:
 363                val->intval = POWER_SUPPLY_SCOPE_DEVICE;
 364                break;
 365
 366        default:
 367                ret = -EINVAL;
 368                break;
 369        }
 370
 371        return ret;
 372}
 373
 374static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
 375{
 376        struct power_supply *battery = &dev->battery;
 377        int ret;
 378        unsigned quirks;
 379        s32 min, max;
 380
 381        if (field->usage->hid != HID_DC_BATTERYSTRENGTH)
 382                return false;   /* no match */
 383
 384        if (battery->name != NULL)
 385                goto out;       /* already initialized? */
 386
 387        battery->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq);
 388        if (battery->name == NULL)
 389                goto out;
 390
 391        battery->type = POWER_SUPPLY_TYPE_BATTERY;
 392        battery->properties = hidinput_battery_props;
 393        battery->num_properties = ARRAY_SIZE(hidinput_battery_props);
 394        battery->use_for_apm = 0;
 395        battery->get_property = hidinput_get_battery_property;
 396
 397        quirks = find_battery_quirk(dev);
 398
 399        hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",
 400                dev->bus, dev->vendor, dev->product, dev->version, quirks);
 401
 402        min = field->logical_minimum;
 403        max = field->logical_maximum;
 404
 405        if (quirks & HID_BATTERY_QUIRK_PERCENT) {
 406                min = 0;
 407                max = 100;
 408        }
 409
 410        if (quirks & HID_BATTERY_QUIRK_FEATURE)
 411                report_type = HID_FEATURE_REPORT;
 412
 413        dev->battery_min = min;
 414        dev->battery_max = max;
 415        dev->battery_report_type = report_type;
 416        dev->battery_report_id = field->report->id;
 417
 418        ret = power_supply_register(&dev->dev, battery);
 419        if (ret != 0) {
 420                hid_warn(dev, "can't register power supply: %d\n", ret);
 421                kfree(battery->name);
 422                battery->name = NULL;
 423        }
 424
 425        power_supply_powers(battery, &dev->dev);
 426
 427out:
 428        return true;
 429}
 430
 431static void hidinput_cleanup_battery(struct hid_device *dev)
 432{
 433        if (!dev->battery.name)
 434                return;
 435
 436        power_supply_unregister(&dev->battery);
 437        kfree(dev->battery.name);
 438        dev->battery.name = NULL;
 439}
 440#else  /* !CONFIG_HID_BATTERY_STRENGTH */
 441static bool hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
 442                                   struct hid_field *field)
 443{
 444        return false;
 445}
 446
 447static void hidinput_cleanup_battery(struct hid_device *dev)
 448{
 449}
 450#endif  /* CONFIG_HID_BATTERY_STRENGTH */
 451
 452static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
 453                                     struct hid_usage *usage)
 454{
 455        struct input_dev *input = hidinput->input;
 456        struct hid_device *device = input_get_drvdata(input);
 457        int max = 0, code;
 458        unsigned long *bit = NULL;
 459
 460        field->hidinput = hidinput;
 461
 462        if (field->flags & HID_MAIN_ITEM_CONSTANT)
 463                goto ignore;
 464
 465        /* only LED usages are supported in output fields */
 466        if (field->report_type == HID_OUTPUT_REPORT &&
 467                        (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {
 468                goto ignore;
 469        }
 470
 471        if (device->driver->input_mapping) {
 472                int ret = device->driver->input_mapping(device, hidinput, field,
 473                                usage, &bit, &max);
 474                if (ret > 0)
 475                        goto mapped;
 476                if (ret < 0)
 477                        goto ignore;
 478        }
 479
 480        switch (usage->hid & HID_USAGE_PAGE) {
 481        case HID_UP_UNDEFINED:
 482                goto ignore;
 483
 484        case HID_UP_KEYBOARD:
 485                set_bit(EV_REP, input->evbit);
 486
 487                if ((usage->hid & HID_USAGE) < 256) {
 488                        if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;
 489                        map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);
 490                } else
 491                        map_key(KEY_UNKNOWN);
 492
 493                break;
 494
 495        case HID_UP_BUTTON:
 496                code = ((usage->hid - 1) & HID_USAGE);
 497
 498                switch (field->application) {
 499                case HID_GD_MOUSE:
 500                case HID_GD_POINTER:  code += BTN_MOUSE; break;
 501                case HID_GD_JOYSTICK:
 502                                if (code <= 0xf)
 503                                        code += BTN_JOYSTICK;
 504                                else
 505                                        code += BTN_TRIGGER_HAPPY;
 506                                break;
 507                case HID_GD_GAMEPAD:  code += BTN_GAMEPAD; break;
 508                default:
 509                        switch (field->physical) {
 510                        case HID_GD_MOUSE:
 511                        case HID_GD_POINTER:  code += BTN_MOUSE; break;
 512                        case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;
 513                        case HID_GD_GAMEPAD:  code += BTN_GAMEPAD; break;
 514                        default:              code += BTN_MISC;
 515                        }
 516                }
 517
 518                map_key(code);
 519                break;
 520
 521        case HID_UP_SIMULATION:
 522                switch (usage->hid & 0xffff) {
 523                case 0xba: map_abs(ABS_RUDDER);   break;
 524                case 0xbb: map_abs(ABS_THROTTLE); break;
 525                case 0xc4: map_abs(ABS_GAS);      break;
 526                case 0xc5: map_abs(ABS_BRAKE);    break;
 527                case 0xc8: map_abs(ABS_WHEEL);    break;
 528                default:   goto ignore;
 529                }
 530                break;
 531
 532        case HID_UP_GENDESK:
 533                if ((usage->hid & 0xf0) == 0x80) {      /* SystemControl */
 534                        switch (usage->hid & 0xf) {
 535                        case 0x1: map_key_clear(KEY_POWER);  break;
 536                        case 0x2: map_key_clear(KEY_SLEEP);  break;
 537                        case 0x3: map_key_clear(KEY_WAKEUP); break;
 538                        case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;
 539                        case 0x5: map_key_clear(KEY_MENU); break;
 540                        case 0x6: map_key_clear(KEY_PROG1); break;
 541                        case 0x7: map_key_clear(KEY_HELP); break;
 542                        case 0x8: map_key_clear(KEY_EXIT); break;
 543                        case 0x9: map_key_clear(KEY_SELECT); break;
 544                        case 0xa: map_key_clear(KEY_RIGHT); break;
 545                        case 0xb: map_key_clear(KEY_LEFT); break;
 546                        case 0xc: map_key_clear(KEY_UP); break;
 547                        case 0xd: map_key_clear(KEY_DOWN); break;
 548                        case 0xe: map_key_clear(KEY_POWER2); break;
 549                        case 0xf: map_key_clear(KEY_RESTART); break;
 550                        default: goto unknown;
 551                        }
 552                        break;
 553                }
 554
 555                if ((usage->hid & 0xf0) == 0x90) {      /* D-pad */
 556                        switch (usage->hid) {
 557                        case HID_GD_UP:    usage->hat_dir = 1; break;
 558                        case HID_GD_DOWN:  usage->hat_dir = 5; break;
 559                        case HID_GD_RIGHT: usage->hat_dir = 3; break;
 560                        case HID_GD_LEFT:  usage->hat_dir = 7; break;
 561                        default: goto unknown;
 562                        }
 563                        if (field->dpad) {
 564                                map_abs(field->dpad);
 565                                goto ignore;
 566                        }
 567                        map_abs(ABS_HAT0X);
 568                        break;
 569                }
 570
 571                switch (usage->hid) {
 572                /* These usage IDs map directly to the usage codes. */
 573                case HID_GD_X: case HID_GD_Y: case HID_GD_Z:
 574                case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:
 575                case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL:
 576                        if (field->flags & HID_MAIN_ITEM_RELATIVE)
 577                                map_rel(usage->hid & 0xf);
 578                        else
 579                                map_abs(usage->hid & 0xf);
 580                        break;
 581
 582                case HID_GD_HATSWITCH:
 583                        usage->hat_min = field->logical_minimum;
 584                        usage->hat_max = field->logical_maximum;
 585                        map_abs(ABS_HAT0X);
 586                        break;
 587
 588                case HID_GD_START:      map_key_clear(BTN_START);       break;
 589                case HID_GD_SELECT:     map_key_clear(BTN_SELECT);      break;
 590
 591                default: goto unknown;
 592                }
 593
 594                break;
 595
 596        case HID_UP_LED:
 597                switch (usage->hid & 0xffff) {                /* HID-Value:                   */
 598                case 0x01:  map_led (LED_NUML);     break;    /*   "Num Lock"                 */
 599                case 0x02:  map_led (LED_CAPSL);    break;    /*   "Caps Lock"                */
 600                case 0x03:  map_led (LED_SCROLLL);  break;    /*   "Scroll Lock"              */
 601                case 0x04:  map_led (LED_COMPOSE);  break;    /*   "Compose"                  */
 602                case 0x05:  map_led (LED_KANA);     break;    /*   "Kana"                     */
 603                case 0x27:  map_led (LED_SLEEP);    break;    /*   "Stand-By"                 */
 604                case 0x4c:  map_led (LED_SUSPEND);  break;    /*   "System Suspend"           */
 605                case 0x09:  map_led (LED_MUTE);     break;    /*   "Mute"                     */
 606                case 0x4b:  map_led (LED_MISC);     break;    /*   "Generic Indicator"        */
 607                case 0x19:  map_led (LED_MAIL);     break;    /*   "Message Waiting"          */
 608                case 0x4d:  map_led (LED_CHARGING); break;    /*   "External Power Connected" */
 609
 610                default: goto ignore;
 611                }
 612                break;
 613
 614        case HID_UP_DIGITIZER:
 615                switch (usage->hid & 0xff) {
 616                case 0x00: /* Undefined */
 617                        goto ignore;
 618
 619                case 0x30: /* TipPressure */
 620                        if (!test_bit(BTN_TOUCH, input->keybit)) {
 621                                device->quirks |= HID_QUIRK_NOTOUCH;
 622                                set_bit(EV_KEY, input->evbit);
 623                                set_bit(BTN_TOUCH, input->keybit);
 624                        }
 625                        map_abs_clear(ABS_PRESSURE);
 626                        break;
 627
 628                case 0x32: /* InRange */
 629                        switch (field->physical & 0xff) {
 630                        case 0x21: map_key(BTN_TOOL_MOUSE); break;
 631                        case 0x22: map_key(BTN_TOOL_FINGER); break;
 632                        default: map_key(BTN_TOOL_PEN); break;
 633                        }
 634                        break;
 635
 636                case 0x3c: /* Invert */
 637                        map_key_clear(BTN_TOOL_RUBBER);
 638                        break;
 639
 640                case 0x3d: /* X Tilt */
 641                        map_abs_clear(ABS_TILT_X);
 642                        break;
 643
 644                case 0x3e: /* Y Tilt */
 645                        map_abs_clear(ABS_TILT_Y);
 646                        break;
 647
 648                case 0x33: /* Touch */
 649                case 0x42: /* TipSwitch */
 650                case 0x43: /* TipSwitch2 */
 651                        device->quirks &= ~HID_QUIRK_NOTOUCH;
 652                        map_key_clear(BTN_TOUCH);
 653                        break;
 654
 655                case 0x44: /* BarrelSwitch */
 656                        map_key_clear(BTN_STYLUS);
 657                        break;
 658
 659                case 0x46: /* TabletPick */
 660                        map_key_clear(BTN_STYLUS2);
 661                        break;
 662
 663                default:  goto unknown;
 664                }
 665                break;
 666
 667        case HID_UP_CONSUMER:   /* USB HUT v1.12, pages 75-84 */
 668                switch (usage->hid & HID_USAGE) {
 669                case 0x000: goto ignore;
 670                case 0x030: map_key_clear(KEY_POWER);           break;
 671                case 0x031: map_key_clear(KEY_RESTART);         break;
 672                case 0x032: map_key_clear(KEY_SLEEP);           break;
 673                case 0x034: map_key_clear(KEY_SLEEP);           break;
 674                case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE);  break;
 675                case 0x036: map_key_clear(BTN_MISC);            break;
 676
 677                case 0x040: map_key_clear(KEY_MENU);            break; /* Menu */
 678                case 0x041: map_key_clear(KEY_SELECT);          break; /* Menu Pick */
 679                case 0x042: map_key_clear(KEY_UP);              break; /* Menu Up */
 680                case 0x043: map_key_clear(KEY_DOWN);            break; /* Menu Down */
 681                case 0x044: map_key_clear(KEY_LEFT);            break; /* Menu Left */
 682                case 0x045: map_key_clear(KEY_RIGHT);           break; /* Menu Right */
 683                case 0x046: map_key_clear(KEY_ESC);             break; /* Menu Escape */
 684                case 0x047: map_key_clear(KEY_KPPLUS);          break; /* Menu Value Increase */
 685                case 0x048: map_key_clear(KEY_KPMINUS);         break; /* Menu Value Decrease */
 686
 687                case 0x060: map_key_clear(KEY_INFO);            break; /* Data On Screen */
 688                case 0x061: map_key_clear(KEY_SUBTITLE);        break; /* Closed Caption */
 689                case 0x063: map_key_clear(KEY_VCR);             break; /* VCR/TV */
 690                case 0x065: map_key_clear(KEY_CAMERA);          break; /* Snapshot */
 691                case 0x069: map_key_clear(KEY_RED);             break;
 692                case 0x06a: map_key_clear(KEY_GREEN);           break;
 693                case 0x06b: map_key_clear(KEY_BLUE);            break;
 694                case 0x06c: map_key_clear(KEY_YELLOW);          break;
 695                case 0x06d: map_key_clear(KEY_ZOOM);            break;
 696
 697                case 0x082: map_key_clear(KEY_VIDEO_NEXT);      break;
 698                case 0x083: map_key_clear(KEY_LAST);            break;
 699                case 0x084: map_key_clear(KEY_ENTER);           break;
 700                case 0x088: map_key_clear(KEY_PC);              break;
 701                case 0x089: map_key_clear(KEY_TV);              break;
 702                case 0x08a: map_key_clear(KEY_WWW);             break;
 703                case 0x08b: map_key_clear(KEY_DVD);             break;
 704                case 0x08c: map_key_clear(KEY_PHONE);           break;
 705                case 0x08d: map_key_clear(KEY_PROGRAM);         break;
 706                case 0x08e: map_key_clear(KEY_VIDEOPHONE);      break;
 707                case 0x08f: map_key_clear(KEY_GAMES);           break;
 708                case 0x090: map_key_clear(KEY_MEMO);            break;
 709                case 0x091: map_key_clear(KEY_CD);              break;
 710                case 0x092: map_key_clear(KEY_VCR);             break;
 711                case 0x093: map_key_clear(KEY_TUNER);           break;
 712                case 0x094: map_key_clear(KEY_EXIT);            break;
 713                case 0x095: map_key_clear(KEY_HELP);            break;
 714                case 0x096: map_key_clear(KEY_TAPE);            break;
 715                case 0x097: map_key_clear(KEY_TV2);             break;
 716                case 0x098: map_key_clear(KEY_SAT);             break;
 717                case 0x09a: map_key_clear(KEY_PVR);             break;
 718
 719                case 0x09c: map_key_clear(KEY_CHANNELUP);       break;
 720                case 0x09d: map_key_clear(KEY_CHANNELDOWN);     break;
 721                case 0x0a0: map_key_clear(KEY_VCR2);            break;
 722
 723                case 0x0b0: map_key_clear(KEY_PLAY);            break;
 724                case 0x0b1: map_key_clear(KEY_PAUSE);           break;
 725                case 0x0b2: map_key_clear(KEY_RECORD);          break;
 726                case 0x0b3: map_key_clear(KEY_FASTFORWARD);     break;
 727                case 0x0b4: map_key_clear(KEY_REWIND);          break;
 728                case 0x0b5: map_key_clear(KEY_NEXTSONG);        break;
 729                case 0x0b6: map_key_clear(KEY_PREVIOUSSONG);    break;
 730                case 0x0b7: map_key_clear(KEY_STOPCD);          break;
 731                case 0x0b8: map_key_clear(KEY_EJECTCD);         break;
 732                case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT);    break;
 733                case 0x0b9: map_key_clear(KEY_SHUFFLE);         break;
 734                case 0x0bf: map_key_clear(KEY_SLOW);            break;
 735
 736                case 0x0cd: map_key_clear(KEY_PLAYPAUSE);       break;
 737                case 0x0e0: map_abs_clear(ABS_VOLUME);          break;
 738                case 0x0e2: map_key_clear(KEY_MUTE);            break;
 739                case 0x0e5: map_key_clear(KEY_BASSBOOST);       break;
 740                case 0x0e9: map_key_clear(KEY_VOLUMEUP);        break;
 741                case 0x0ea: map_key_clear(KEY_VOLUMEDOWN);      break;
 742                case 0x0f5: map_key_clear(KEY_SLOW);            break;
 743
 744                case 0x182: map_key_clear(KEY_BOOKMARKS);       break;
 745                case 0x183: map_key_clear(KEY_CONFIG);          break;
 746                case 0x184: map_key_clear(KEY_WORDPROCESSOR);   break;
 747                case 0x185: map_key_clear(KEY_EDITOR);          break;
 748                case 0x186: map_key_clear(KEY_SPREADSHEET);     break;
 749                case 0x187: map_key_clear(KEY_GRAPHICSEDITOR);  break;
 750                case 0x188: map_key_clear(KEY_PRESENTATION);    break;
 751                case 0x189: map_key_clear(KEY_DATABASE);        break;
 752                case 0x18a: map_key_clear(KEY_MAIL);            break;
 753                case 0x18b: map_key_clear(KEY_NEWS);            break;
 754                case 0x18c: map_key_clear(KEY_VOICEMAIL);       break;
 755                case 0x18d: map_key_clear(KEY_ADDRESSBOOK);     break;
 756                case 0x18e: map_key_clear(KEY_CALENDAR);        break;
 757                case 0x191: map_key_clear(KEY_FINANCE);         break;
 758                case 0x192: map_key_clear(KEY_CALC);            break;
 759                case 0x193: map_key_clear(KEY_PLAYER);          break;
 760                case 0x194: map_key_clear(KEY_FILE);            break;
 761                case 0x196: map_key_clear(KEY_WWW);             break;
 762                case 0x199: map_key_clear(KEY_CHAT);            break;
 763                case 0x19c: map_key_clear(KEY_LOGOFF);          break;
 764                case 0x19e: map_key_clear(KEY_COFFEE);          break;
 765                case 0x1a6: map_key_clear(KEY_HELP);            break;
 766                case 0x1a7: map_key_clear(KEY_DOCUMENTS);       break;
 767                case 0x1ab: map_key_clear(KEY_SPELLCHECK);      break;
 768                case 0x1ae: map_key_clear(KEY_KEYBOARD);        break;
 769                case 0x1b6: map_key_clear(KEY_IMAGES);          break;
 770                case 0x1b7: map_key_clear(KEY_AUDIO);           break;
 771                case 0x1b8: map_key_clear(KEY_VIDEO);           break;
 772                case 0x1bc: map_key_clear(KEY_MESSENGER);       break;
 773                case 0x1bd: map_key_clear(KEY_INFO);            break;
 774                case 0x201: map_key_clear(KEY_NEW);             break;
 775                case 0x202: map_key_clear(KEY_OPEN);            break;
 776                case 0x203: map_key_clear(KEY_CLOSE);           break;
 777                case 0x204: map_key_clear(KEY_EXIT);            break;
 778                case 0x207: map_key_clear(KEY_SAVE);            break;
 779                case 0x208: map_key_clear(KEY_PRINT);           break;
 780                case 0x209: map_key_clear(KEY_PROPS);           break;
 781                case 0x21a: map_key_clear(KEY_UNDO);            break;
 782                case 0x21b: map_key_clear(KEY_COPY);            break;
 783                case 0x21c: map_key_clear(KEY_CUT);             break;
 784                case 0x21d: map_key_clear(KEY_PASTE);           break;
 785                case 0x21f: map_key_clear(KEY_FIND);            break;
 786                case 0x221: map_key_clear(KEY_SEARCH);          break;
 787                case 0x222: map_key_clear(KEY_GOTO);            break;
 788                case 0x223: map_key_clear(KEY_HOMEPAGE);        break;
 789                case 0x224: map_key_clear(KEY_BACK);            break;
 790                case 0x225: map_key_clear(KEY_FORWARD);         break;
 791                case 0x226: map_key_clear(KEY_STOP);            break;
 792                case 0x227: map_key_clear(KEY_REFRESH);         break;
 793                case 0x22a: map_key_clear(KEY_BOOKMARKS);       break;
 794                case 0x22d: map_key_clear(KEY_ZOOMIN);          break;
 795                case 0x22e: map_key_clear(KEY_ZOOMOUT);         break;
 796                case 0x22f: map_key_clear(KEY_ZOOMRESET);       break;
 797                case 0x233: map_key_clear(KEY_SCROLLUP);        break;
 798                case 0x234: map_key_clear(KEY_SCROLLDOWN);      break;
 799                case 0x238: map_rel(REL_HWHEEL);                break;
 800                case 0x23d: map_key_clear(KEY_EDIT);            break;
 801                case 0x25f: map_key_clear(KEY_CANCEL);          break;
 802                case 0x269: map_key_clear(KEY_INSERT);          break;
 803                case 0x26a: map_key_clear(KEY_DELETE);          break;
 804                case 0x279: map_key_clear(KEY_REDO);            break;
 805
 806                case 0x289: map_key_clear(KEY_REPLY);           break;
 807                case 0x28b: map_key_clear(KEY_FORWARDMAIL);     break;
 808                case 0x28c: map_key_clear(KEY_SEND);            break;
 809
 810                default:    goto ignore;
 811                }
 812                break;
 813
 814        case HID_UP_GENDEVCTRLS:
 815                if (hidinput_setup_battery(device, HID_INPUT_REPORT, field))
 816                        goto ignore;
 817                else
 818                        goto unknown;
 819                break;
 820
 821        case HID_UP_HPVENDOR:   /* Reported on a Dutch layout HP5308 */
 822                set_bit(EV_REP, input->evbit);
 823                switch (usage->hid & HID_USAGE) {
 824                case 0x021: map_key_clear(KEY_PRINT);           break;
 825                case 0x070: map_key_clear(KEY_HP);              break;
 826                case 0x071: map_key_clear(KEY_CAMERA);          break;
 827                case 0x072: map_key_clear(KEY_SOUND);           break;
 828                case 0x073: map_key_clear(KEY_QUESTION);        break;
 829                case 0x080: map_key_clear(KEY_EMAIL);           break;
 830                case 0x081: map_key_clear(KEY_CHAT);            break;
 831                case 0x082: map_key_clear(KEY_SEARCH);          break;
 832                case 0x083: map_key_clear(KEY_CONNECT);         break;
 833                case 0x084: map_key_clear(KEY_FINANCE);         break;
 834                case 0x085: map_key_clear(KEY_SPORT);           break;
 835                case 0x086: map_key_clear(KEY_SHOP);            break;
 836                default:    goto ignore;
 837                }
 838                break;
 839
 840        case HID_UP_HPVENDOR2:
 841                set_bit(EV_REP, input->evbit);
 842                switch (usage->hid & HID_USAGE) {
 843                case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN);  break;
 844                case 0x004: map_key_clear(KEY_BRIGHTNESSUP);    break;
 845                default:    goto ignore;
 846                }
 847                break;
 848
 849        case HID_UP_MSVENDOR:
 850                goto ignore;
 851
 852        case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
 853                set_bit(EV_REP, input->evbit);
 854                goto ignore;
 855
 856        case HID_UP_LOGIVENDOR:
 857                goto ignore;
 858
 859        case HID_UP_PID:
 860                switch (usage->hid & HID_USAGE) {
 861                case 0xa4: map_key_clear(BTN_DEAD);     break;
 862                default: goto ignore;
 863                }
 864                break;
 865
 866        default:
 867        unknown:
 868                if (field->report_size == 1) {
 869                        if (field->report->type == HID_OUTPUT_REPORT) {
 870                                map_led(LED_MISC);
 871                                break;
 872                        }
 873                        map_key(BTN_MISC);
 874                        break;
 875                }
 876                if (field->flags & HID_MAIN_ITEM_RELATIVE) {
 877                        map_rel(REL_MISC);
 878                        break;
 879                }
 880                map_abs(ABS_MISC);
 881                break;
 882        }
 883
 884mapped:
 885        if (device->driver->input_mapped && device->driver->input_mapped(device,
 886                                hidinput, field, usage, &bit, &max) < 0)
 887                goto ignore;
 888
 889        set_bit(usage->type, input->evbit);
 890
 891        while (usage->code <= max && test_and_set_bit(usage->code, bit))
 892                usage->code = find_next_zero_bit(bit, max + 1, usage->code);
 893
 894        if (usage->code > max)
 895                goto ignore;
 896
 897
 898        if (usage->type == EV_ABS) {
 899
 900                int a = field->logical_minimum;
 901                int b = field->logical_maximum;
 902
 903                if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {
 904                        a = field->logical_minimum = 0;
 905                        b = field->logical_maximum = 255;
 906                }
 907
 908                if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)
 909                        input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);
 910                else    input_set_abs_params(input, usage->code, a, b, 0, 0);
 911
 912                input_abs_set_res(input, usage->code,
 913                                  hidinput_calc_abs_res(field, usage->code));
 914
 915                /* use a larger default input buffer for MT devices */
 916                if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)
 917                        input_set_events_per_packet(input, 60);
 918        }
 919
 920        if (usage->type == EV_ABS &&
 921            (usage->hat_min < usage->hat_max || usage->hat_dir)) {
 922                int i;
 923                for (i = usage->code; i < usage->code + 2 && i <= max; i++) {
 924                        input_set_abs_params(input, i, -1, 1, 0, 0);
 925                        set_bit(i, input->absbit);
 926                }
 927                if (usage->hat_dir && !field->dpad)
 928                        field->dpad = usage->code;
 929        }
 930
 931        /* for those devices which produce Consumer volume usage as relative,
 932         * we emulate pressing volumeup/volumedown appropriate number of times
 933         * in hidinput_hid_event()
 934         */
 935        if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
 936                        (usage->code == ABS_VOLUME)) {
 937                set_bit(KEY_VOLUMEUP, input->keybit);
 938                set_bit(KEY_VOLUMEDOWN, input->keybit);
 939        }
 940
 941        if (usage->type == EV_KEY) {
 942                set_bit(EV_MSC, input->evbit);
 943                set_bit(MSC_SCAN, input->mscbit);
 944        }
 945
 946ignore:
 947        return;
 948
 949}
 950
 951void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
 952{
 953        struct input_dev *input;
 954        unsigned *quirks = &hid->quirks;
 955
 956        if (!field->hidinput)
 957                return;
 958
 959        input = field->hidinput->input;
 960
 961        if (!usage->type)
 962                return;
 963
 964        if (usage->hat_min < usage->hat_max || usage->hat_dir) {
 965                int hat_dir = usage->hat_dir;
 966                if (!hat_dir)
 967                        hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;
 968                if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;
 969                input_event(input, usage->type, usage->code    , hid_hat_to_axis[hat_dir].x);
 970                input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
 971                return;
 972        }
 973
 974        if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */
 975                *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT);
 976                return;
 977        }
 978
 979        if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */
 980                if (value) {
 981                        input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1);
 982                        return;
 983                }
 984                input_event(input, usage->type, usage->code, 0);
 985                input_event(input, usage->type, BTN_TOOL_RUBBER, 0);
 986                return;
 987        }
 988
 989        if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */
 990                int a = field->logical_minimum;
 991                int b = field->logical_maximum;
 992                input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3));
 993        }
 994
 995        if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */
 996                dbg_hid("Maximum Effects - %d\n",value);
 997                return;
 998        }
 999
1000        if (usage->hid == (HID_UP_PID | 0x7fUL)) {
1001                dbg_hid("PID Pool Report\n");
1002                return;
1003        }
1004
1005        if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */
1006                return;
1007
1008        if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&
1009                        (usage->code == ABS_VOLUME)) {
1010                int count = abs(value);
1011                int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;
1012                int i;
1013
1014                for (i = 0; i < count; i++) {
1015                        input_event(input, EV_KEY, direction, 1);
1016                        input_sync(input);
1017                        input_event(input, EV_KEY, direction, 0);
1018                        input_sync(input);
1019                }
1020                return;
1021        }
1022
1023        /*
1024         * Ignore out-of-range values as per HID specification,
1025         * section 5.10 and 6.2.25
1026         */
1027        if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1028            (value < field->logical_minimum ||
1029             value > field->logical_maximum)) {
1030                dbg_hid("Ignoring out-of-range value %x\n", value);
1031                return;
1032        }
1033
1034        /* report the usage code as scancode if the key status has changed */
1035        if (usage->type == EV_KEY && !!test_bit(usage->code, input->key) != value)
1036                input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1037
1038        input_event(input, usage->type, usage->code, value);
1039
1040        if ((field->flags & HID_MAIN_ITEM_RELATIVE) && (usage->type == EV_KEY))
1041                input_event(input, usage->type, usage->code, 0);
1042}
1043
1044void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
1045{
1046        struct hid_input *hidinput;
1047
1048        if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
1049                return;
1050
1051        list_for_each_entry(hidinput, &hid->inputs, list)
1052                input_sync(hidinput->input);
1053}
1054EXPORT_SYMBOL_GPL(hidinput_report_event);
1055
1056int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1057{
1058        struct hid_report *report;
1059        int i, j;
1060
1061        list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {
1062                for (i = 0; i < report->maxfield; i++) {
1063                        *field = report->field[i];
1064                        for (j = 0; j < (*field)->maxusage; j++)
1065                                if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)
1066                                        return j;
1067                }
1068        }
1069        return -1;
1070}
1071EXPORT_SYMBOL_GPL(hidinput_find_field);
1072
1073struct hid_field *hidinput_get_led_field(struct hid_device *hid)
1074{
1075        struct hid_report *report;
1076        struct hid_field *field;
1077        int i, j;
1078
1079        list_for_each_entry(report,
1080                            &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1081                            list) {
1082                for (i = 0; i < report->maxfield; i++) {
1083                        field = report->field[i];
1084                        for (j = 0; j < field->maxusage; j++)
1085                                if (field->usage[j].type == EV_LED)
1086                                        return field;
1087                }
1088        }
1089        return NULL;
1090}
1091EXPORT_SYMBOL_GPL(hidinput_get_led_field);
1092
1093unsigned int hidinput_count_leds(struct hid_device *hid)
1094{
1095        struct hid_report *report;
1096        struct hid_field *field;
1097        int i, j;
1098        unsigned int count = 0;
1099
1100        list_for_each_entry(report,
1101                            &hid->report_enum[HID_OUTPUT_REPORT].report_list,
1102                            list) {
1103                for (i = 0; i < report->maxfield; i++) {
1104                        field = report->field[i];
1105                        for (j = 0; j < field->maxusage; j++)
1106                                if (field->usage[j].type == EV_LED &&
1107                                    field->value[j])
1108                                        count += 1;
1109                }
1110        }
1111        return count;
1112}
1113EXPORT_SYMBOL_GPL(hidinput_count_leds);
1114
1115static int hidinput_open(struct input_dev *dev)
1116{
1117        struct hid_device *hid = input_get_drvdata(dev);
1118
1119        return hid_hw_open(hid);
1120}
1121
1122static void hidinput_close(struct input_dev *dev)
1123{
1124        struct hid_device *hid = input_get_drvdata(dev);
1125
1126        hid_hw_close(hid);
1127}
1128
1129static void report_features(struct hid_device *hid)
1130{
1131        struct hid_driver *drv = hid->driver;
1132        struct hid_report_enum *rep_enum;
1133        struct hid_report *rep;
1134        int i, j;
1135
1136        rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
1137        list_for_each_entry(rep, &rep_enum->report_list, list)
1138                for (i = 0; i < rep->maxfield; i++)
1139                        for (j = 0; j < rep->field[i]->maxusage; j++) {
1140                                /* Verify if Battery Strength feature is available */
1141                                hidinput_setup_battery(hid, HID_FEATURE_REPORT, rep->field[i]);
1142
1143                                if (drv->feature_mapping)
1144                                        drv->feature_mapping(hid, rep->field[i],
1145                                                             rep->field[i]->usage + j);
1146                        }
1147}
1148
1149/*
1150 * Register the input device; print a message.
1151 * Configure the input layer interface
1152 * Read all reports and initialize the absolute field values.
1153 */
1154
1155int hidinput_connect(struct hid_device *hid, unsigned int force)
1156{
1157        struct hid_report *report;
1158        struct hid_input *hidinput = NULL;
1159        struct input_dev *input_dev;
1160        int i, j, k;
1161
1162        INIT_LIST_HEAD(&hid->inputs);
1163
1164        if (!force) {
1165                for (i = 0; i < hid->maxcollection; i++) {
1166                        struct hid_collection *col = &hid->collection[i];
1167                        if (col->type == HID_COLLECTION_APPLICATION ||
1168                                        col->type == HID_COLLECTION_PHYSICAL)
1169                                if (IS_INPUT_APPLICATION(col->usage))
1170                                        break;
1171                }
1172
1173                if (i == hid->maxcollection)
1174                        return -1;
1175        }
1176
1177        report_features(hid);
1178
1179        for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1180                if (k == HID_OUTPUT_REPORT &&
1181                        hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
1182                        continue;
1183
1184                list_for_each_entry(report, &hid->report_enum[k].report_list, list) {
1185
1186                        if (!report->maxfield)
1187                                continue;
1188
1189                        if (!hidinput) {
1190                                hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
1191                                input_dev = input_allocate_device();
1192                                if (!hidinput || !input_dev) {
1193                                        kfree(hidinput);
1194                                        input_free_device(input_dev);
1195                                        hid_err(hid, "Out of memory during hid input probe\n");
1196                                        goto out_unwind;
1197                                }
1198
1199                                input_set_drvdata(input_dev, hid);
1200                                input_dev->event =
1201                                        hid->ll_driver->hidinput_input_event;
1202                                input_dev->open = hidinput_open;
1203                                input_dev->close = hidinput_close;
1204                                input_dev->setkeycode = hidinput_setkeycode;
1205                                input_dev->getkeycode = hidinput_getkeycode;
1206
1207                                input_dev->name = hid->name;
1208                                input_dev->phys = hid->phys;
1209                                input_dev->uniq = hid->uniq;
1210                                input_dev->id.bustype = hid->bus;
1211                                input_dev->id.vendor  = hid->vendor;
1212                                input_dev->id.product = hid->product;
1213                                input_dev->id.version = hid->version;
1214                                input_dev->dev.parent = hid->dev.parent;
1215                                hidinput->input = input_dev;
1216                                list_add_tail(&hidinput->list, &hid->inputs);
1217                        }
1218
1219                        for (i = 0; i < report->maxfield; i++)
1220                                for (j = 0; j < report->field[i]->maxusage; j++)
1221                                        hidinput_configure_usage(hidinput, report->field[i],
1222                                                                 report->field[i]->usage + j);
1223
1224                        if (hid->quirks & HID_QUIRK_MULTI_INPUT) {
1225                                /* This will leave hidinput NULL, so that it
1226                                 * allocates another one if we have more inputs on
1227                                 * the same interface. Some devices (e.g. Happ's
1228                                 * UGCI) cram a lot of unrelated inputs into the
1229                                 * same interface. */
1230                                hidinput->report = report;
1231                                if (input_register_device(hidinput->input))
1232                                        goto out_cleanup;
1233                                hidinput = NULL;
1234                        }
1235                }
1236        }
1237
1238        if (hidinput && input_register_device(hidinput->input))
1239                goto out_cleanup;
1240
1241        return 0;
1242
1243out_cleanup:
1244        list_del(&hidinput->list);
1245        input_free_device(hidinput->input);
1246        kfree(hidinput);
1247out_unwind:
1248        /* unwind the ones we already registered */
1249        hidinput_disconnect(hid);
1250
1251        return -1;
1252}
1253EXPORT_SYMBOL_GPL(hidinput_connect);
1254
1255void hidinput_disconnect(struct hid_device *hid)
1256{
1257        struct hid_input *hidinput, *next;
1258
1259        hidinput_cleanup_battery(hid);
1260
1261        list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
1262                list_del(&hidinput->list);
1263                input_unregister_device(hidinput->input);
1264                kfree(hidinput);
1265        }
1266}
1267EXPORT_SYMBOL_GPL(hidinput_disconnect);
1268
1269
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