hid-input.c 49.3 KB
Newer Older
1 2
/*
 *  Copyright (c) 2000-2001 Vojtech Pavlik
J
Jiri Kosina 已提交
3
 *  Copyright (c) 2006-2010 Jiri Kosina
4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
 *
 *  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>
33
#include <linux/hid-debug.h>
34

35 36
#include "hid-ids.h"

37 38 39 40 41 42 43 44 45 46 47 48
#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,
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 55 56 57 58 59 60 61 62
	 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}};

63 64 65 66
#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))
67

68 69 70 71
#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))
72

73 74
static bool match_scancode(struct hid_usage *usage,
			   unsigned int cur_idx, unsigned int scancode)
75
{
76
	return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;
77 78
}

79 80
static bool match_keycode(struct hid_usage *usage,
			  unsigned int cur_idx, unsigned int keycode)
81
{
82 83 84 85
	/*
	 * We should exclude unmapped usages when doing lookup by keycode.
	 */
	return (usage->type == EV_KEY && usage->code == keycode);
86
}
87

88 89 90 91
static bool match_index(struct hid_usage *usage,
			unsigned int cur_idx, unsigned int idx)
{
	return cur_idx == idx;
92 93
}

94 95 96
typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,
				unsigned int cur_idx, unsigned int val);

97
static struct hid_usage *hidinput_find_key(struct hid_device *hid,
98 99 100
					   hid_usage_cmp_t match,
					   unsigned int value,
					   unsigned int *usage_idx)
101
{
102
	unsigned int i, j, k, cur_idx = 0;
103 104 105 106 107 108
	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++) {
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) {
112 113 114 115 116 117 118
						if (match(usage, cur_idx, value)) {
							if (usage_idx)
								*usage_idx = cur_idx;
							return usage;
						}
						cur_idx++;
					}
119 120 121 122 123 124 125
				}
			}
		}
	}
	return NULL;
}

126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142
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;
}

143
static 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;
J
Jiri Kosina 已提交
149

150
	usage = hidinput_locate_usage(hid, ke, &index);
151
	if (usage) {
152 153
		ke->keycode = usage->type == EV_KEY ?
				usage->code : KEY_RESERVED;
154 155 156 157
		ke->index = index;
		scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);
		ke->len = sizeof(scancode);
		memcpy(ke->scancode, &scancode, sizeof(scancode));
158 159
		return 0;
	}
160

161 162 163
	return -EINVAL;
}

164
static int hidinput_setkeycode(struct input_dev *dev,
165 166
			       const struct input_keymap_entry *ke,
			       unsigned int *old_keycode)
167
{
168
	struct hid_device *hid = input_get_drvdata(dev);
169
	struct hid_usage *usage;
J
Jiri Kosina 已提交
170

171
	usage = hidinput_locate_usage(hid, ke, NULL);
172
	if (usage) {
173 174
		*old_keycode = usage->type == EV_KEY ?
				usage->code : KEY_RESERVED;
175
		usage->code = ke->keycode;
J
Jiri Kosina 已提交
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",
180 181 182 183 184 185 186 187
			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);
J
Jiri Kosina 已提交
188

189 190
		return 0;
	}
J
Jiri Kosina 已提交
191

192 193 194
	return -EINVAL;
}

195

196 197 198 199 200 201 202 203 204 205 206 207
/**
 * 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.
 *
208 209
 * Only exponent 1 length units are processed. Centimeters and inches are
 * converted to millimeters. Degrees are converted to radians.
210
 */
211
__s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)
212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227
{
	__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
	 */
228 229 230 231
	switch (code) {
	case ABS_X:
	case ABS_Y:
	case ABS_Z:
232 233 234 235 236 237
	case ABS_MT_POSITION_X:
	case ABS_MT_POSITION_Y:
	case ABS_MT_TOOL_X:
	case ABS_MT_TOOL_Y:
	case ABS_MT_TOUCH_MAJOR:
	case ABS_MT_TOUCH_MINOR:
238
		if (field->unit == 0x11) {		/* If centimeters */
239 240
			/* Convert to millimeters */
			unit_exponent += 1;
241
		} else if (field->unit == 0x13) {	/* If inches */
242 243 244 245
			/* Convert to millimeters */
			prev = physical_extents;
			physical_extents *= 254;
			if (physical_extents < prev)
246
				return 0;
247
			unit_exponent -= 1;
248
		} else {
249 250
			return 0;
		}
251 252 253 254 255
		break;

	case ABS_RX:
	case ABS_RY:
	case ABS_RZ:
256
	case ABS_WHEEL:
257 258
	case ABS_TILT_X:
	case ABS_TILT_Y:
259 260 261 262 263 264 265 266 267 268
		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;
		}
269 270 271
		break;

	default:
272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290
		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 */
291
	return DIV_ROUND_CLOSEST(logical_extents, physical_extents);
292
}
293
EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);
294

295 296 297 298 299 300
#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,
301 302
	POWER_SUPPLY_PROP_STATUS,
	POWER_SUPPLY_PROP_SCOPE,
303 304
};

305
#define HID_BATTERY_QUIRK_PERCENT	(1 << 0) /* always reports percent */
306
#define HID_BATTERY_QUIRK_FEATURE	(1 << 1) /* ask for feature report */
307
#define HID_BATTERY_QUIRK_IGNORE	(1 << 2) /* completely ignore the battery */
308 309

static const struct hid_device_id hid_battery_quirks[] = {
310
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
311 312 313 314 315
		USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),
	  HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
		USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),
	  HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
316
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
317
		USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),
318
	  HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
319 320 321
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
			       USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO),
	  HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
322 323 324
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,
		USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),
	  HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },
325 326 327
	{ HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM,
		USB_DEVICE_ID_ELECOM_BM084),
	  HID_BATTERY_QUIRK_IGNORE },
328 329 330 331 332 333 334 335 336 337 338 339 340 341 342
	{}
};

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;
}

343 344 345 346 347 348 349 350 351 352 353 354 355 356 357 358 359 360 361 362 363 364 365 366 367 368 369 370 371 372 373 374
static int hidinput_scale_battery_capacity(struct hid_device *dev,
					   int value)
{
	if (dev->battery_min < dev->battery_max &&
	    value >= dev->battery_min && value <= dev->battery_max)
		value = ((value - dev->battery_min) * 100) /
			(dev->battery_max - dev->battery_min);

	return value;
}

static int hidinput_query_battery_capacity(struct hid_device *dev)
{
	u8 *buf;
	int ret;

	buf = kmalloc(2, GFP_KERNEL);
	if (!buf)
		return -ENOMEM;

	ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2,
				 dev->battery_report_type, HID_REQ_GET_REPORT);
	if (ret != 2) {
		kfree(buf);
		return -ENODATA;
	}

	ret = hidinput_scale_battery_capacity(dev, buf[1]);
	kfree(buf);
	return ret;
}

375 376 377 378
static int hidinput_get_battery_property(struct power_supply *psy,
					 enum power_supply_property prop,
					 union power_supply_propval *val)
{
379
	struct hid_device *dev = power_supply_get_drvdata(psy);
380
	int value;
381 382 383 384 385 386 387 388 389
	int ret = 0;

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

	case POWER_SUPPLY_PROP_CAPACITY:
390 391 392 393 394 395
		if (dev->battery_report_type == HID_FEATURE_REPORT) {
			value = hidinput_query_battery_capacity(dev);
			if (value < 0)
				return value;
		} else  {
			value = dev->battery_capacity;
396 397
		}

398
		val->intval = value;
399 400 401 402 403 404
		break;

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

405
	case POWER_SUPPLY_PROP_STATUS:
406 407 408 409 410 411 412 413 414 415 416 417 418 419 420 421
		if (!dev->battery_reported &&
		    dev->battery_report_type == HID_FEATURE_REPORT) {
			value = hidinput_query_battery_capacity(dev);
			if (value < 0)
				return value;

			dev->battery_capacity = value;
			dev->battery_reported = true;
		}

		if (!dev->battery_reported)
			val->intval = POWER_SUPPLY_STATUS_UNKNOWN;
		else if (dev->battery_capacity == 100)
			val->intval = POWER_SUPPLY_STATUS_FULL;
		else
			val->intval = POWER_SUPPLY_STATUS_DISCHARGING;
422 423
		break;

424 425 426 427
	case POWER_SUPPLY_PROP_SCOPE:
		val->intval = POWER_SUPPLY_SCOPE_DEVICE;
		break;

428 429 430 431 432 433 434 435
	default:
		ret = -EINVAL;
		break;
	}

	return ret;
}

436
static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field)
437
{
438
	struct power_supply_desc *psy_desc;
439
	struct power_supply_config psy_cfg = { .drv_data = dev, };
440
	unsigned quirks;
441
	s32 min, max;
442
	int error;
443

444 445
	if (dev->battery)
		return 0;	/* already initialized? */
446

447 448 449 450 451 452
	quirks = find_battery_quirk(dev);

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

	if (quirks & HID_BATTERY_QUIRK_IGNORE)
453
		return 0;
454

455
	psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);
456 457
	if (!psy_desc)
		return -ENOMEM;
458

459
	psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery", dev->uniq);
460 461 462
	if (!psy_desc->name) {
		error = -ENOMEM;
		goto err_free_mem;
463 464 465 466 467 468 469
	}

	psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;
	psy_desc->properties = hidinput_battery_props;
	psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);
	psy_desc->use_for_apm = 0;
	psy_desc->get_property = hidinput_get_battery_property;
470

471 472 473
	min = field->logical_minimum;
	max = field->logical_maximum;

474 475 476 477 478
	if (quirks & HID_BATTERY_QUIRK_PERCENT) {
		min = 0;
		max = 100;
	}

479 480 481
	if (quirks & HID_BATTERY_QUIRK_FEATURE)
		report_type = HID_FEATURE_REPORT;

482 483
	dev->battery_min = min;
	dev->battery_max = max;
484
	dev->battery_report_type = report_type;
485
	dev->battery_report_id = field->report->id;
486

487 488
	dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);
	if (IS_ERR(dev->battery)) {
489 490 491
		error = PTR_ERR(dev->battery);
		hid_warn(dev, "can't register power supply: %d\n", error);
		goto err_free_name;
492
	}
493

494 495 496 497 498 499 500 501 502
	power_supply_powers(dev->battery, &dev->dev);
	return 0;

err_free_name:
	kfree(psy_desc->name);
err_free_mem:
	kfree(psy_desc);
	dev->battery = NULL;
	return error;
503 504 505 506
}

static void hidinput_cleanup_battery(struct hid_device *dev)
{
507 508
	const struct power_supply_desc *psy_desc;

509
	if (!dev->battery)
510 511
		return;

512
	psy_desc = dev->battery->desc;
513
	power_supply_unregister(dev->battery);
514 515
	kfree(psy_desc->name);
	kfree(psy_desc);
516
	dev->battery = NULL;
517
}
518 519 520 521 522 523 524 525 526 527 528 529 530

static void hidinput_update_battery(struct hid_device *dev, int value)
{
	if (!dev->battery)
		return;

	if (value == 0 || value < dev->battery_min || value > dev->battery_max)
		return;

	dev->battery_capacity = hidinput_scale_battery_capacity(dev, value);
	dev->battery_reported = true;
	power_supply_changed(dev->battery);
}
531
#else  /* !CONFIG_HID_BATTERY_STRENGTH */
532 533
static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,
				  struct hid_field *field)
534
{
535
	return 0;
536 537 538 539 540
}

static void hidinput_cleanup_battery(struct hid_device *dev)
{
}
541 542 543 544

static void hidinput_update_battery(struct hid_device *dev, int value)
{
}
545 546
#endif	/* CONFIG_HID_BATTERY_STRENGTH */

547 548 549 550
static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,
				     struct hid_usage *usage)
{
	struct input_dev *input = hidinput->input;
551
	struct hid_device *device = input_get_drvdata(input);
J
Jiri Slaby 已提交
552
	int max = 0, code;
553 554 555 556 557 558 559
	unsigned long *bit = NULL;

	field->hidinput = hidinput;

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

560 561 562 563
	/* Ignore if report count is out of bounds. */
	if (field->report_count < 1)
		goto ignore;

564 565 566 567 568 569
	/* 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;
	}

J
Jiri Slaby 已提交
570 571 572 573 574 575 576 577 578
	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;
	}

579
	switch (usage->hid & HID_USAGE_PAGE) {
J
Jiri Slaby 已提交
580 581
	case HID_UP_UNDEFINED:
		goto ignore;
582

J
Jiri Slaby 已提交
583 584
	case HID_UP_KEYBOARD:
		set_bit(EV_REP, input->evbit);
585

J
Jiri Slaby 已提交
586 587 588 589 590
		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);
591

J
Jiri Slaby 已提交
592
		break;
593

J
Jiri Slaby 已提交
594
	case HID_UP_BUTTON:
595
		code = ((usage->hid - 1) & HID_USAGE);
596

J
Jiri Slaby 已提交
597 598
		switch (field->application) {
		case HID_GD_MOUSE:
599
		case HID_GD_POINTER:  code += BTN_MOUSE; break;
600
		case HID_GD_JOYSTICK:
601 602 603
				if (code <= 0xf)
					code += BTN_JOYSTICK;
				else
604 605 606 607 608 609 610
					code += BTN_TRIGGER_HAPPY - 0x10;
				break;
		case HID_GD_GAMEPAD:
				if (code <= 0xf)
					code += BTN_GAMEPAD;
				else
					code += BTN_TRIGGER_HAPPY - 0x10;
611
				break;
J
Jiri Slaby 已提交
612 613 614
		default:
			switch (field->physical) {
			case HID_GD_MOUSE:
615 616 617 618
			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;
619
			}
J
Jiri Slaby 已提交
620
		}
621

J
Jiri Slaby 已提交
622 623 624 625 626 627 628 629 630 631 632 633 634 635 636 637 638 639 640 641
		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;
642 643 644 645 646 647 648 649 650 651 652 653
			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;
J
Jiri Slaby 已提交
654
			default: goto unknown;
655 656
			}
			break;
J
Jiri Slaby 已提交
657
		}
658

659 660 661 662 663 664 665 666 667
		/*
		 * Some lazy vendors declare 255 usages for System Control,
		 * leading to the creation of ABS_X|Y axis and too many others.
		 * It wouldn't be a problem if joydev doesn't consider the
		 * device as a joystick then.
		 */
		if (field->application == HID_GD_SYSTEM_CONTROL)
			goto ignore;

J
Jiri Slaby 已提交
668
		if ((usage->hid & 0xf0) == 0x90) {	/* D-pad */
669
			switch (usage->hid) {
J
Jiri Slaby 已提交
670 671 672 673 674
			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;
675
			}
J
Jiri Slaby 已提交
676 677 678
			if (field->dpad) {
				map_abs(field->dpad);
				goto ignore;
679
			}
J
Jiri Slaby 已提交
680
			map_abs(ABS_HAT0X);
681
			break;
J
Jiri Slaby 已提交
682
		}
683

J
Jiri Slaby 已提交
684 685 686 687
		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:
688 689 690 691 692 693
			if (field->flags & HID_MAIN_ITEM_RELATIVE)
				map_rel(usage->hid & 0xf);
			else
				map_abs_clear(usage->hid & 0xf);
			break;

J
Jiri Slaby 已提交
694 695 696 697 698 699
		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;
700

J
Jiri Slaby 已提交
701 702 703 704 705
		case HID_GD_HATSWITCH:
			usage->hat_min = field->logical_minimum;
			usage->hat_max = field->logical_maximum;
			map_abs(ABS_HAT0X);
			break;
706

J
Jiri Slaby 已提交
707 708
		case HID_GD_START:	map_key_clear(BTN_START);	break;
		case HID_GD_SELECT:	map_key_clear(BTN_SELECT);	break;
709

710 711
		case HID_GD_RFKILL_BTN:
			/* MS wireless radio ctl extension, also check CA */
712
			if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {
713 714 715 716 717 718
				map_key_clear(KEY_RFKILL);
				/* We need to simulate the btn release */
				field->flags |= HID_MAIN_ITEM_RELATIVE;
				break;
			}

J
Jiri Slaby 已提交
719 720
		default: goto unknown;
		}
721

J
Jiri Slaby 已提交
722 723 724 725 726 727 728 729 730 731 732 733 734 735 736 737 738 739 740 741 742 743
		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) {
744 745 746
		case 0x00: /* Undefined */
			goto ignore;

J
Jiri Slaby 已提交
747 748 749 750 751
		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);
752
			}
J
Jiri Slaby 已提交
753
			map_abs_clear(ABS_PRESSURE);
754 755
			break;

J
Jiri Slaby 已提交
756 757 758 759 760
		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;
761 762 763
			}
			break;

764 765 766 767 768
		case 0x3b: /* Battery Strength */
			hidinput_setup_battery(device, HID_INPUT_REPORT, field);
			usage->type = EV_PWR;
			goto ignore;

J
Jiri Slaby 已提交
769 770
		case 0x3c: /* Invert */
			map_key_clear(BTN_TOOL_RUBBER);
771 772
			break;

773 774 775 776 777 778 779 780
		case 0x3d: /* X Tilt */
			map_abs_clear(ABS_TILT_X);
			break;

		case 0x3e: /* Y Tilt */
			map_abs_clear(ABS_TILT_Y);
			break;

J
Jiri Slaby 已提交
781 782 783 784 785 786
		case 0x33: /* Touch */
		case 0x42: /* TipSwitch */
		case 0x43: /* TipSwitch2 */
			device->quirks &= ~HID_QUIRK_NOTOUCH;
			map_key_clear(BTN_TOUCH);
			break;
787

J
Jiri Slaby 已提交
788 789 790
		case 0x44: /* BarrelSwitch */
			map_key_clear(BTN_STYLUS);
			break;
791

792
		case 0x46: /* TabletPick */
793
		case 0x5a: /* SecondaryBarrelSwitch */
794 795 796
			map_key_clear(BTN_STYLUS2);
			break;

797
		case 0x5b: /* TransducerSerialNumber */
798 799 800 801
			usage->type = EV_MSC;
			usage->code = MSC_SERIAL;
			bit = input->mscbit;
			max = MSC_MAX;
802 803
			break;

J
Jiri Slaby 已提交
804 805 806 807
		default:  goto unknown;
		}
		break;

D
Dmitry Torokhov 已提交
808 809 810 811 812 813 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830
	case HID_UP_TELEPHONY:
		switch (usage->hid & HID_USAGE) {
		case 0x2f: map_key_clear(KEY_MICMUTE);		break;
		case 0xb0: map_key_clear(KEY_NUMERIC_0);	break;
		case 0xb1: map_key_clear(KEY_NUMERIC_1);	break;
		case 0xb2: map_key_clear(KEY_NUMERIC_2);	break;
		case 0xb3: map_key_clear(KEY_NUMERIC_3);	break;
		case 0xb4: map_key_clear(KEY_NUMERIC_4);	break;
		case 0xb5: map_key_clear(KEY_NUMERIC_5);	break;
		case 0xb6: map_key_clear(KEY_NUMERIC_6);	break;
		case 0xb7: map_key_clear(KEY_NUMERIC_7);	break;
		case 0xb8: map_key_clear(KEY_NUMERIC_8);	break;
		case 0xb9: map_key_clear(KEY_NUMERIC_9);	break;
		case 0xba: map_key_clear(KEY_NUMERIC_STAR);	break;
		case 0xbb: map_key_clear(KEY_NUMERIC_POUND);	break;
		case 0xbc: map_key_clear(KEY_NUMERIC_A);	break;
		case 0xbd: map_key_clear(KEY_NUMERIC_B);	break;
		case 0xbe: map_key_clear(KEY_NUMERIC_C);	break;
		case 0xbf: map_key_clear(KEY_NUMERIC_D);	break;
		default: goto ignore;
		}
		break;

831
	case HID_UP_CONSUMER:	/* USB HUT v1.12, pages 75-84 */
J
Jiri Slaby 已提交
832 833
		switch (usage->hid & HID_USAGE) {
		case 0x000: goto ignore;
834 835 836
		case 0x030: map_key_clear(KEY_POWER);		break;
		case 0x031: map_key_clear(KEY_RESTART);		break;
		case 0x032: map_key_clear(KEY_SLEEP);		break;
J
Jiri Slaby 已提交
837
		case 0x034: map_key_clear(KEY_SLEEP);		break;
838
		case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE);	break;
J
Jiri Slaby 已提交
839 840
		case 0x036: map_key_clear(BTN_MISC);		break;

841 842 843 844 845 846 847 848 849 850 851 852 853 854 855 856 857 858 859 860
		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;

O
Olivier Gay 已提交
861 862 863 864 865 866 867
		case 0x06f: map_key_clear(KEY_BRIGHTNESSUP);		break;
		case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN);		break;
		case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE);	break;
		case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN);		break;
		case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX);		break;
		case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO);		break;

868
		case 0x082: map_key_clear(KEY_VIDEO_NEXT);	break;
J
Jiri Slaby 已提交
869
		case 0x083: map_key_clear(KEY_LAST);		break;
870
		case 0x084: map_key_clear(KEY_ENTER);		break;
J
Jiri Slaby 已提交
871 872 873 874 875 876 877 878 879 880 881 882 883 884 885 886 887 888 889 890 891 892 893 894 895 896 897 898 899 900 901 902 903
		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;
904 905
		case 0x0b9: map_key_clear(KEY_SHUFFLE);		break;
		case 0x0bf: map_key_clear(KEY_SLOW);		break;
J
Jiri Slaby 已提交
906 907

		case 0x0cd: map_key_clear(KEY_PLAYPAUSE);	break;
O
Olivier Gay 已提交
908
		case 0x0cf: map_key_clear(KEY_VOICECOMMAND);	break;
J
Jiri Slaby 已提交
909 910 911 912 913
		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;
914
		case 0x0f5: map_key_clear(KEY_SLOW);		break;
J
Jiri Slaby 已提交
915

O
Olivier Gay 已提交
916
		case 0x181: map_key_clear(KEY_BUTTONCONFIG);	break;
J
Jiri Slaby 已提交
917 918 919 920 921 922 923 924 925 926 927 928 929
		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;
O
Olivier Gay 已提交
930 931
		case 0x18f: map_key_clear(KEY_TASKMANAGER);	break;
		case 0x190: map_key_clear(KEY_JOURNAL);		break;
J
Jiri Slaby 已提交
932 933
		case 0x191: map_key_clear(KEY_FINANCE);		break;
		case 0x192: map_key_clear(KEY_CALC);		break;
934
		case 0x193: map_key_clear(KEY_PLAYER);		break;
J
Jiri Slaby 已提交
935 936
		case 0x194: map_key_clear(KEY_FILE);		break;
		case 0x196: map_key_clear(KEY_WWW);		break;
937
		case 0x199: map_key_clear(KEY_CHAT);		break;
J
Jiri Slaby 已提交
938 939
		case 0x19c: map_key_clear(KEY_LOGOFF);		break;
		case 0x19e: map_key_clear(KEY_COFFEE);		break;
O
Olivier Gay 已提交
940 941
		case 0x19f: map_key_clear(KEY_CONTROLPANEL);		break;
		case 0x1a2: map_key_clear(KEY_APPSELECT);		break;
942 943
		case 0x1a3: map_key_clear(KEY_NEXT);		break;
		case 0x1a4: map_key_clear(KEY_PREVIOUS);	break;
J
Jiri Slaby 已提交
944 945 946
		case 0x1a6: map_key_clear(KEY_HELP);		break;
		case 0x1a7: map_key_clear(KEY_DOCUMENTS);	break;
		case 0x1ab: map_key_clear(KEY_SPELLCHECK);	break;
947
		case 0x1ae: map_key_clear(KEY_KEYBOARD);	break;
O
Olivier Gay 已提交
948
		case 0x1b1: map_key_clear(KEY_SCREENSAVER);		break;
949
		case 0x1b4: map_key_clear(KEY_FILE);		break;
950 951 952
		case 0x1b6: map_key_clear(KEY_IMAGES);		break;
		case 0x1b7: map_key_clear(KEY_AUDIO);		break;
		case 0x1b8: map_key_clear(KEY_VIDEO);		break;
J
Jiri Slaby 已提交
953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980
		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;
981
		case 0x23d: map_key_clear(KEY_EDIT);		break;
J
Jiri Slaby 已提交
982
		case 0x25f: map_key_clear(KEY_CANCEL);		break;
983 984
		case 0x269: map_key_clear(KEY_INSERT);		break;
		case 0x26a: map_key_clear(KEY_DELETE);		break;
J
Jiri Slaby 已提交
985 986 987 988 989 990
		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;

991 992 993 994 995 996 997
		case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV);		break;
		case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT);		break;
		case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP);		break;
		case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP);		break;
		case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT);	break;
		case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL);	break;

998
		default: map_key_clear(KEY_UNKNOWN);
J
Jiri Slaby 已提交
999 1000 1001
		}
		break;

1002
	case HID_UP_GENDEVCTRLS:
1003 1004 1005 1006
		switch (usage->hid) {
		case HID_DC_BATTERYSTRENGTH:
			hidinput_setup_battery(device, HID_INPUT_REPORT, field);
			usage->type = EV_PWR;
1007
			goto ignore;
1008 1009
		}
		goto unknown;
1010

J
Jiri Slaby 已提交
1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025
	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;
1026 1027 1028 1029 1030 1031 1032
		default:    goto ignore;
		}
		break;

	case HID_UP_HPVENDOR2:
		set_bit(EV_REP, input->evbit);
		switch (usage->hid & HID_USAGE) {
1033
		case 0x001: map_key_clear(KEY_MICMUTE);		break;
1034 1035
		case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN);	break;
		case 0x004: map_key_clear(KEY_BRIGHTNESSUP);	break;
J
Jiri Slaby 已提交
1036 1037 1038
		default:    goto ignore;
		}
		break;
1039

J
Jiri Slaby 已提交
1040 1041
	case HID_UP_MSVENDOR:
		goto ignore;
1042

J
Jiri Slaby 已提交
1043 1044 1045
	case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */
		set_bit(EV_REP, input->evbit);
		goto ignore;
1046

J
Jiri Slaby 已提交
1047
	case HID_UP_LOGIVENDOR:
1048 1049 1050 1051
		/* intentional fallback */
	case HID_UP_LOGIVENDOR2:
		/* intentional fallback */
	case HID_UP_LOGIVENDOR3:
J
Jiri Slaby 已提交
1052
		goto ignore;
1053

J
Jiri Slaby 已提交
1054 1055 1056 1057 1058 1059
	case HID_UP_PID:
		switch (usage->hid & HID_USAGE) {
		case 0xa4: map_key_clear(BTN_DEAD);	break;
		default: goto ignore;
		}
		break;
1060

J
Jiri Slaby 已提交
1061 1062 1063 1064 1065
	default:
	unknown:
		if (field->report_size == 1) {
			if (field->report->type == HID_OUTPUT_REPORT) {
				map_led(LED_MISC);
1066 1067
				break;
			}
J
Jiri Slaby 已提交
1068
			map_key(BTN_MISC);
1069
			break;
J
Jiri Slaby 已提交
1070 1071 1072 1073 1074 1075 1076
		}
		if (field->flags & HID_MAIN_ITEM_RELATIVE) {
			map_rel(REL_MISC);
			break;
		}
		map_abs(ABS_MISC);
		break;
1077 1078
	}

1079
mapped:
J
Jiri Slaby 已提交
1080 1081 1082 1083
	if (device->driver->input_mapped && device->driver->input_mapped(device,
				hidinput, field, usage, &bit, &max) < 0)
		goto ignore;

1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105
	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);

1106 1107 1108
		input_abs_set_res(input, usage->code,
				  hidinput_calc_abs_res(field, usage->code));

1109 1110 1111
		/* 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);
1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124
	}

	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;
	}

1125 1126 1127 1128 1129 1130 1131 1132 1133 1134
	/* 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);
	}

1135 1136 1137 1138 1139
	if (usage->type == EV_KEY) {
		set_bit(EV_MSC, input->evbit);
		set_bit(MSC_SCAN, input->mscbit);
	}

1140 1141
ignore:
	return;
1142

1143 1144 1145 1146 1147
}

void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)
{
	struct input_dev *input;
A
Al Viro 已提交
1148
	unsigned *quirks = &hid->quirks;
1149

1150
	if (!usage->type)
1151 1152
		return;

1153 1154 1155 1156
	if (usage->type == EV_PWR) {
		hidinput_update_battery(hid, value);
		return;
	}
1157

1158
	if (!field->hidinput)
1159 1160
		return;

1161 1162
	input = field->hidinput->input;

1163 1164 1165 1166 1167 1168
	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);
1169 1170 1171
		input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);
		return;
	}
1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194

	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 */
1195
		dbg_hid("Maximum Effects - %d\n",value);
1196 1197 1198 1199
		return;
	}

	if (usage->hid == (HID_UP_PID | 0x7fUL)) {
1200
		dbg_hid("PID Pool Report\n");
1201 1202 1203 1204 1205 1206
		return;
	}

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

1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221
	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;
	}

1222 1223
	/*
	 * Ignore out-of-range values as per HID specification,
1224 1225 1226 1227
	 * section 5.10 and 6.2.25, when NULL state bit is present.
	 * When it's not, clamp the value to match Microsoft's input
	 * driver as mentioned in "Required HID usages for digitizers":
	 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp
1228 1229 1230 1231
	 *
	 * The logical_minimum < logical_maximum check is done so that we
	 * don't unintentionally discard values sent by devices which
	 * don't specify logical min and max.
1232 1233
	 */
	if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&
1234 1235 1236 1237 1238 1239 1240 1241 1242 1243
	    (field->logical_minimum < field->logical_maximum)) {
		if (field->flags & HID_MAIN_ITEM_NULL_STATE &&
		    (value < field->logical_minimum ||
		     value > field->logical_maximum)) {
			dbg_hid("Ignoring out-of-range value %x\n", value);
			return;
		}
		value = clamp(value,
			      field->logical_minimum,
			      field->logical_maximum);
1244 1245
	}

1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257
	/*
	 * Ignore reports for absolute data if the data didn't change. This is
	 * not only an optimization but also fixes 'dead' key reports. Some
	 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID
	 * 0x31 and 0x32) report multiple keys, even though a localized keyboard
	 * can only have one of them physically available. The 'dead' keys
	 * report constant 0. As all map to the same keycode, they'd confuse
	 * the input layer. If we filter the 'dead' keys on the HID level, we
	 * skip the keycode translation and only forward real events.
	 */
	if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |
	                      HID_MAIN_ITEM_BUFFERED_BYTE)) &&
1258
			      (field->flags & HID_MAIN_ITEM_VARIABLE) &&
1259 1260 1261 1262
	    usage->usage_index < field->maxusage &&
	    value == field->value[usage->usage_index])
		return;

1263
	/* report the usage code as scancode if the key status has changed */
1264 1265
	if (usage->type == EV_KEY &&
	    (!test_bit(usage->code, input->key)) == value)
1266
		input_event(input, EV_MSC, MSC_SCAN, usage->hid);
1267

1268 1269
	input_event(input, usage->type, usage->code, value);

1270 1271 1272
	if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&
	    usage->type == EV_KEY && value) {
		input_sync(input);
1273
		input_event(input, usage->type, usage->code, 0);
1274
	}
1275 1276 1277 1278 1279 1280
}

void hidinput_report_event(struct hid_device *hid, struct hid_report *report)
{
	struct hid_input *hidinput;

1281 1282 1283
	if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)
		return;

1284 1285 1286
	list_for_each_entry(hidinput, &hid->inputs, list)
		input_sync(hidinput->input);
}
J
Jiri Kosina 已提交
1287
EXPORT_SYMBOL_GPL(hidinput_report_event);
1288

J
Jiri Kosina 已提交
1289
int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field)
1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303
{
	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;
}
J
Jiri Kosina 已提交
1304
EXPORT_SYMBOL_GPL(hidinput_find_field);
1305

1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347
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);

1348 1349 1350 1351 1352 1353
static void hidinput_led_worker(struct work_struct *work)
{
	struct hid_device *hid = container_of(work, struct hid_device,
					      led_work);
	struct hid_field *field;
	struct hid_report *report;
1354
	int len, ret;
1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380
	__u8 *buf;

	field = hidinput_get_led_field(hid);
	if (!field)
		return;

	/*
	 * field->report is accessed unlocked regarding HID core. So there might
	 * be another incoming SET-LED request from user-space, which changes
	 * the LED state while we assemble our outgoing buffer. However, this
	 * doesn't matter as hid_output_report() correctly converts it into a
	 * boolean value no matter what information is currently set on the LED
	 * field (even garbage). So the remote device will always get a valid
	 * request.
	 * And in case we send a wrong value, a next led worker is spawned
	 * for every SET-LED request so the following worker will send the
	 * correct value, guaranteed!
	 */

	report = field->report;

	/* use custom SET_REPORT request if possible (asynchronous) */
	if (hid->ll_driver->request)
		return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);

	/* fall back to generic raw-output-report */
1381
	len = hid_report_len(report);
B
Benjamin Tissoires 已提交
1382
	buf = hid_alloc_report_buf(report, GFP_KERNEL);
1383 1384 1385 1386 1387
	if (!buf)
		return;

	hid_output_report(report, buf);
	/* synchronous output report */
1388 1389 1390 1391
	ret = hid_hw_output_report(hid, buf, len);
	if (ret == -ENOSYS)
		hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,
				HID_REQ_SET_REPORT);
1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418
	kfree(buf);
}

static int hidinput_input_event(struct input_dev *dev, unsigned int type,
				unsigned int code, int value)
{
	struct hid_device *hid = input_get_drvdata(dev);
	struct hid_field *field;
	int offset;

	if (type == EV_FF)
		return input_ff_event(dev, type, code, value);

	if (type != EV_LED)
		return -1;

	if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {
		hid_warn(dev, "event field not found\n");
		return -1;
	}

	hid_set_field(field, offset, value);

	schedule_work(&hid->led_work);
	return 0;
}

1419 1420
static int hidinput_open(struct input_dev *dev)
{
1421 1422
	struct hid_device *hid = input_get_drvdata(dev);

1423
	return hid_hw_open(hid);
1424 1425 1426 1427
}

static void hidinput_close(struct input_dev *dev)
{
1428 1429
	struct hid_device *hid = input_get_drvdata(dev);

1430
	hid_hw_close(hid);
1431 1432
}

1433 1434 1435 1436 1437
static void report_features(struct hid_device *hid)
{
	struct hid_driver *drv = hid->driver;
	struct hid_report_enum *rep_enum;
	struct hid_report *rep;
1438
	struct hid_usage *usage;
1439 1440 1441 1442
	int i, j;

	rep_enum = &hid->report_enum[HID_FEATURE_REPORT];
	list_for_each_entry(rep, &rep_enum->report_list, list)
1443 1444 1445 1446 1447
		for (i = 0; i < rep->maxfield; i++) {
			/* Ignore if report count is out of bounds. */
			if (rep->field[i]->report_count < 1)
				continue;

1448
			for (j = 0; j < rep->field[i]->maxusage; j++) {
1449 1450
				usage = &rep->field[i]->usage[j];

1451
				/* Verify if Battery Strength feature is available */
1452 1453 1454
				if (usage->hid == HID_DC_BATTERYSTRENGTH)
					hidinput_setup_battery(hid, HID_FEATURE_REPORT,
							       rep->field[i]);
1455 1456

				if (drv->feature_mapping)
1457
					drv->feature_mapping(hid, rep->field[i], usage);
1458
			}
1459
		}
1460 1461
}

1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473
static struct hid_input *hidinput_allocate(struct hid_device *hid)
{
	struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);
	struct input_dev *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\n");
		return NULL;
	}

	input_set_drvdata(input_dev, hid);
1474
	input_dev->event = hidinput_input_event;
1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486
	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;
1487
	input_dev->dev.parent = &hid->dev;
1488 1489 1490 1491 1492 1493
	hidinput->input = input_dev;
	list_add_tail(&hidinput->list, &hid->inputs);

	return hidinput;
}

1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 1531 1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554
static bool hidinput_has_been_populated(struct hid_input *hidinput)
{
	int i;
	unsigned long r = 0;

	for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)
		r |= hidinput->input->evbit[i];

	for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)
		r |= hidinput->input->keybit[i];

	for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)
		r |= hidinput->input->relbit[i];

	for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)
		r |= hidinput->input->absbit[i];

	for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)
		r |= hidinput->input->mscbit[i];

	for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)
		r |= hidinput->input->ledbit[i];

	for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)
		r |= hidinput->input->sndbit[i];

	for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)
		r |= hidinput->input->ffbit[i];

	for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)
		r |= hidinput->input->swbit[i];

	return !!r;
}

static void hidinput_cleanup_hidinput(struct hid_device *hid,
		struct hid_input *hidinput)
{
	struct hid_report *report;
	int i, k;

	list_del(&hidinput->list);
	input_free_device(hidinput->input);

	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) {

			for (i = 0; i < report->maxfield; i++)
				if (report->field[i]->hidinput == hidinput)
					report->field[i]->hidinput = NULL;
		}
	}

	kfree(hidinput);
}

1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 1578 1579
static struct hid_input *hidinput_match(struct hid_report *report)
{
	struct hid_device *hid = report->device;
	struct hid_input *hidinput;

	list_for_each_entry(hidinput, &hid->inputs, list) {
		if (hidinput->report &&
		    hidinput->report->id == report->id)
			return hidinput;
	}

	return NULL;
}

static inline void hidinput_configure_usages(struct hid_input *hidinput,
					     struct hid_report *report)
{
	int i, j;

	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);
}

1580 1581 1582 1583 1584 1585
/*
 * Register the input device; print a message.
 * Configure the input layer interface
 * Read all reports and initialize the absolute field values.
 */

J
Jiri Slaby 已提交
1586
int hidinput_connect(struct hid_device *hid, unsigned int force)
1587
{
1588
	struct hid_driver *drv = hid->driver;
1589
	struct hid_report *report;
1590 1591
	struct hid_input *next, *hidinput = NULL;
	int i, k;
1592 1593

	INIT_LIST_HEAD(&hid->inputs);
1594
	INIT_WORK(&hid->led_work, hidinput_led_worker);
1595

J
Jiri Slaby 已提交
1596 1597 1598 1599 1600 1601 1602 1603
	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;
		}
1604

J
Jiri Slaby 已提交
1605 1606 1607
		if (i == hid->maxcollection)
			return -1;
	}
1608

1609 1610 1611
	report_features(hid);

	for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {
1612 1613 1614
		if (k == HID_OUTPUT_REPORT &&
			hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)
			continue;
1615

1616 1617 1618 1619 1620
		list_for_each_entry(report, &hid->report_enum[k].report_list, list) {

			if (!report->maxfield)
				continue;

1621 1622 1623 1624 1625 1626 1627
			/*
			 * Find the previous hidinput report attached
			 * to this report id.
			 */
			if (hid->quirks & HID_QUIRK_MULTI_INPUT)
				hidinput = hidinput_match(report);

1628
			if (!hidinput) {
1629 1630
				hidinput = hidinput_allocate(hid);
				if (!hidinput)
1631
					goto out_unwind;
1632 1633
			}

1634
			hidinput_configure_usages(hidinput, report);
1635

1636
			if (hid->quirks & HID_QUIRK_MULTI_INPUT)
1637 1638
				hidinput->report = report;
		}
1639
	}
1640

1641 1642 1643 1644 1645 1646 1647 1648 1649 1650 1651 1652 1653 1654
	list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
		if ((hid->quirks & HID_QUIRK_NO_EMPTY_INPUT) &&
		    !hidinput_has_been_populated(hidinput)) {
			/* no need to register an input device not populated */
			hidinput_cleanup_hidinput(hid, hidinput);
			continue;
		}

		if (drv->input_configured &&
		    drv->input_configured(hid, hidinput))
			goto out_unwind;
		if (input_register_device(hidinput->input))
			goto out_unwind;
		hidinput->registered = true;
1655 1656 1657 1658 1659 1660 1661
	}

	if (list_empty(&hid->inputs)) {
		hid_err(hid, "No inputs registered, leaving\n");
		goto out_unwind;
	}

1662
	return 0;
1663 1664 1665 1666 1667 1668

out_unwind:
	/* unwind the ones we already registered */
	hidinput_disconnect(hid);

	return -1;
1669
}
J
Jiri Kosina 已提交
1670
EXPORT_SYMBOL_GPL(hidinput_connect);
1671 1672 1673 1674 1675

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

1676 1677
	hidinput_cleanup_battery(hid);

1678 1679
	list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {
		list_del(&hidinput->list);
1680 1681 1682 1683
		if (hidinput->registered)
			input_unregister_device(hidinput->input);
		else
			input_free_device(hidinput->input);
1684 1685
		kfree(hidinput);
	}
1686 1687 1688 1689 1690 1691

	/* led_work is spawned by input_dev callbacks, but doesn't access the
	 * parent input_dev at all. Once all input devices are removed, we
	 * know that led_work will never get restarted, so we can cancel it
	 * synchronously and are safe. */
	cancel_work_sync(&hid->led_work);
1692
}
J
Jiri Kosina 已提交
1693 1694
EXPORT_SYMBOL_GPL(hidinput_disconnect);