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1// SPDX-License-Identifier: GPL-2.0-or-later2/*3 * Copyright (c) 2000-2001 Vojtech Pavlik4 * Copyright (c) 2006-2010 Jiri Kosina5 *6 * HID to Linux Input mapping7 */8 9/*10 *11 * Should you need to contact me, the author, you can do so either by12 * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail:13 * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic14 */15 16#include <linux/module.h>17#include <linux/slab.h>18#include <linux/kernel.h>19 20#include <linux/hid.h>21#include <linux/hid-debug.h>22 23#include "hid-ids.h"24 25#define unk KEY_UNKNOWN26 27static const unsigned char hid_keyboard[256] = {28 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38,29 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3,30 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26,31 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64,32 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106,33 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71,34 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190,35 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113,36 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk,37 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,38 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,39 unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk,40 unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,41 unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk,42 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113,43 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk44};45 46static const struct {47 __s32 x;48 __s32 y;49} hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}};50 51struct usage_priority {52 __u32 usage; /* the HID usage associated */53 bool global; /* we assume all usages to be slotted,54 * unless global55 */56 unsigned int slot_overwrite; /* for globals: allows to set the usage57 * before or after the slots58 */59};60 61/*62 * hid-input will convert this list into priorities:63 * the first element will have the highest priority64 * (the length of the following array) and the last65 * element the lowest (1).66 *67 * hid-input will then shift the priority by 8 bits to leave some space68 * in case drivers want to interleave other fields.69 *70 * To accommodate slotted devices, the slot priority is71 * defined in the next 8 bits (defined by 0xff - slot).72 *73 * If drivers want to add fields before those, hid-input will74 * leave out the first 8 bits of the priority value.75 *76 * This still leaves us 65535 individual priority values.77 */78static const struct usage_priority hidinput_usages_priorities[] = {79 { /* Eraser (eraser touching) must always come before tipswitch */80 .usage = HID_DG_ERASER,81 },82 { /* Invert must always come before In Range */83 .usage = HID_DG_INVERT,84 },85 { /* Is the tip of the tool touching? */86 .usage = HID_DG_TIPSWITCH,87 },88 { /* Tip Pressure might emulate tip switch */89 .usage = HID_DG_TIPPRESSURE,90 },91 { /* In Range needs to come after the other tool states */92 .usage = HID_DG_INRANGE,93 },94};95 96#define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c))97#define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c))98#define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c))99#define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c))100#define map_msc(c) hid_map_usage(hidinput, usage, &bit, &max, EV_MSC, (c))101 102#define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \103 &max, EV_ABS, (c))104#define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \105 &max, EV_KEY, (c))106 107static bool match_scancode(struct hid_usage *usage,108 unsigned int cur_idx, unsigned int scancode)109{110 return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode;111}112 113static bool match_keycode(struct hid_usage *usage,114 unsigned int cur_idx, unsigned int keycode)115{116 /*117 * We should exclude unmapped usages when doing lookup by keycode.118 */119 return (usage->type == EV_KEY && usage->code == keycode);120}121 122static bool match_index(struct hid_usage *usage,123 unsigned int cur_idx, unsigned int idx)124{125 return cur_idx == idx;126}127 128typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage,129 unsigned int cur_idx, unsigned int val);130 131static struct hid_usage *hidinput_find_key(struct hid_device *hid,132 hid_usage_cmp_t match,133 unsigned int value,134 unsigned int *usage_idx)135{136 unsigned int i, j, k, cur_idx = 0;137 struct hid_report *report;138 struct hid_usage *usage;139 140 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {141 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {142 for (i = 0; i < report->maxfield; i++) {143 for (j = 0; j < report->field[i]->maxusage; j++) {144 usage = report->field[i]->usage + j;145 if (usage->type == EV_KEY || usage->type == 0) {146 if (match(usage, cur_idx, value)) {147 if (usage_idx)148 *usage_idx = cur_idx;149 return usage;150 }151 cur_idx++;152 }153 }154 }155 }156 }157 return NULL;158}159 160static struct hid_usage *hidinput_locate_usage(struct hid_device *hid,161 const struct input_keymap_entry *ke,162 unsigned int *index)163{164 struct hid_usage *usage;165 unsigned int scancode;166 167 if (ke->flags & INPUT_KEYMAP_BY_INDEX)168 usage = hidinput_find_key(hid, match_index, ke->index, index);169 else if (input_scancode_to_scalar(ke, &scancode) == 0)170 usage = hidinput_find_key(hid, match_scancode, scancode, index);171 else172 usage = NULL;173 174 return usage;175}176 177static int hidinput_getkeycode(struct input_dev *dev,178 struct input_keymap_entry *ke)179{180 struct hid_device *hid = input_get_drvdata(dev);181 struct hid_usage *usage;182 unsigned int scancode, index;183 184 usage = hidinput_locate_usage(hid, ke, &index);185 if (usage) {186 ke->keycode = usage->type == EV_KEY ?187 usage->code : KEY_RESERVED;188 ke->index = index;189 scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE);190 ke->len = sizeof(scancode);191 memcpy(ke->scancode, &scancode, sizeof(scancode));192 return 0;193 }194 195 return -EINVAL;196}197 198static int hidinput_setkeycode(struct input_dev *dev,199 const struct input_keymap_entry *ke,200 unsigned int *old_keycode)201{202 struct hid_device *hid = input_get_drvdata(dev);203 struct hid_usage *usage;204 205 usage = hidinput_locate_usage(hid, ke, NULL);206 if (usage) {207 *old_keycode = usage->type == EV_KEY ?208 usage->code : KEY_RESERVED;209 usage->type = EV_KEY;210 usage->code = ke->keycode;211 212 clear_bit(*old_keycode, dev->keybit);213 set_bit(usage->code, dev->keybit);214 dbg_hid("Assigned keycode %d to HID usage code %x\n",215 usage->code, usage->hid);216 217 /*218 * Set the keybit for the old keycode if the old keycode is used219 * by another key220 */221 if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL))222 set_bit(*old_keycode, dev->keybit);223 224 return 0;225 }226 227 return -EINVAL;228}229 230 231/**232 * hidinput_calc_abs_res - calculate an absolute axis resolution233 * @field: the HID report field to calculate resolution for234 * @code: axis code235 *236 * The formula is:237 * (logical_maximum - logical_minimum)238 * resolution = ----------------------------------------------------------239 * (physical_maximum - physical_minimum) * 10 ^ unit_exponent240 *241 * as seen in the HID specification v1.11 6.2.2.7 Global Items.242 *243 * Only exponent 1 length units are processed. Centimeters and inches are244 * converted to millimeters. Degrees are converted to radians.245 */246__s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code)247{248 __s32 unit_exponent = field->unit_exponent;249 __s32 logical_extents = field->logical_maximum -250 field->logical_minimum;251 __s32 physical_extents = field->physical_maximum -252 field->physical_minimum;253 __s32 prev;254 255 /* Check if the extents are sane */256 if (logical_extents <= 0 || physical_extents <= 0)257 return 0;258 259 /*260 * Verify and convert units.261 * See HID specification v1.11 6.2.2.7 Global Items for unit decoding262 */263 switch (code) {264 case ABS_X:265 case ABS_Y:266 case ABS_Z:267 case ABS_MT_POSITION_X:268 case ABS_MT_POSITION_Y:269 case ABS_MT_TOOL_X:270 case ABS_MT_TOOL_Y:271 case ABS_MT_TOUCH_MAJOR:272 case ABS_MT_TOUCH_MINOR:273 if (field->unit == 0x11) { /* If centimeters */274 /* Convert to millimeters */275 unit_exponent += 1;276 } else if (field->unit == 0x13) { /* If inches */277 /* Convert to millimeters */278 prev = physical_extents;279 physical_extents *= 254;280 if (physical_extents < prev)281 return 0;282 unit_exponent -= 1;283 } else {284 return 0;285 }286 break;287 288 case ABS_RX:289 case ABS_RY:290 case ABS_RZ:291 case ABS_WHEEL:292 case ABS_TILT_X:293 case ABS_TILT_Y:294 if (field->unit == 0x14) { /* If degrees */295 /* Convert to radians */296 prev = logical_extents;297 logical_extents *= 573;298 if (logical_extents < prev)299 return 0;300 unit_exponent += 1;301 } else if (field->unit != 0x12) { /* If not radians */302 return 0;303 }304 break;305 306 default:307 return 0;308 }309 310 /* Apply negative unit exponent */311 for (; unit_exponent < 0; unit_exponent++) {312 prev = logical_extents;313 logical_extents *= 10;314 if (logical_extents < prev)315 return 0;316 }317 /* Apply positive unit exponent */318 for (; unit_exponent > 0; unit_exponent--) {319 prev = physical_extents;320 physical_extents *= 10;321 if (physical_extents < prev)322 return 0;323 }324 325 /* Calculate resolution */326 return DIV_ROUND_CLOSEST(logical_extents, physical_extents);327}328EXPORT_SYMBOL_GPL(hidinput_calc_abs_res);329 330#ifdef CONFIG_HID_BATTERY_STRENGTH331static enum power_supply_property hidinput_battery_props[] = {332 POWER_SUPPLY_PROP_PRESENT,333 POWER_SUPPLY_PROP_ONLINE,334 POWER_SUPPLY_PROP_CAPACITY,335 POWER_SUPPLY_PROP_MODEL_NAME,336 POWER_SUPPLY_PROP_STATUS,337 POWER_SUPPLY_PROP_SCOPE,338};339 340#define HID_BATTERY_QUIRK_PERCENT (1 << 0) /* always reports percent */341#define HID_BATTERY_QUIRK_FEATURE (1 << 1) /* ask for feature report */342#define HID_BATTERY_QUIRK_IGNORE (1 << 2) /* completely ignore the battery */343#define HID_BATTERY_QUIRK_AVOID_QUERY (1 << 3) /* do not query the battery */344 345static const struct hid_device_id hid_battery_quirks[] = {346 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,347 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO),348 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },349 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,350 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI),351 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },352 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,353 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ANSI),354 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },355 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,356 USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO),357 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },358 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,359 USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI),360 HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE },361 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE,362 USB_DEVICE_ID_APPLE_MAGICTRACKPAD),363 HID_BATTERY_QUIRK_IGNORE },364 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM,365 USB_DEVICE_ID_ELECOM_BM084),366 HID_BATTERY_QUIRK_IGNORE },367 { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL,368 USB_DEVICE_ID_SYMBOL_SCANNER_3),369 HID_BATTERY_QUIRK_IGNORE },370 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ASUSTEK,371 USB_DEVICE_ID_ASUSTEK_T100CHI_KEYBOARD),372 HID_BATTERY_QUIRK_IGNORE },373 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_LOGITECH,374 USB_DEVICE_ID_LOGITECH_DINOVO_EDGE_KBD),375 HID_BATTERY_QUIRK_IGNORE },376 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550_TOUCHSCREEN),377 HID_BATTERY_QUIRK_IGNORE },378 { HID_USB_DEVICE(USB_VENDOR_ID_ELAN, USB_DEVICE_ID_ASUS_UX550VE_TOUCHSCREEN),379 HID_BATTERY_QUIRK_IGNORE },380 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_L),381 HID_BATTERY_QUIRK_AVOID_QUERY },382 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_MW),383 HID_BATTERY_QUIRK_AVOID_QUERY },384 { HID_USB_DEVICE(USB_VENDOR_ID_UGEE, USB_DEVICE_ID_UGEE_XPPEN_TABLET_DECO_PRO_SW),385 HID_BATTERY_QUIRK_AVOID_QUERY },386 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, I2C_DEVICE_ID_CHROMEBOOK_TROGDOR_POMPOM),387 HID_BATTERY_QUIRK_AVOID_QUERY },388 /*389 * Elan I2C-HID touchscreens seem to all report a non present battery,390 * set HID_BATTERY_QUIRK_IGNORE for all Elan I2C-HID devices.391 */392 { HID_I2C_DEVICE(USB_VENDOR_ID_ELAN, HID_ANY_ID), HID_BATTERY_QUIRK_IGNORE },393 {}394};395 396static unsigned find_battery_quirk(struct hid_device *hdev)397{398 unsigned quirks = 0;399 const struct hid_device_id *match;400 401 match = hid_match_id(hdev, hid_battery_quirks);402 if (match != NULL)403 quirks = match->driver_data;404 405 return quirks;406}407 408static int hidinput_scale_battery_capacity(struct hid_device *dev,409 int value)410{411 if (dev->battery_min < dev->battery_max &&412 value >= dev->battery_min && value <= dev->battery_max)413 value = ((value - dev->battery_min) * 100) /414 (dev->battery_max - dev->battery_min);415 416 return value;417}418 419static int hidinput_query_battery_capacity(struct hid_device *dev)420{421 u8 *buf;422 int ret;423 424 buf = kmalloc(4, GFP_KERNEL);425 if (!buf)426 return -ENOMEM;427 428 ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 4,429 dev->battery_report_type, HID_REQ_GET_REPORT);430 if (ret < 2) {431 kfree(buf);432 return -ENODATA;433 }434 435 ret = hidinput_scale_battery_capacity(dev, buf[1]);436 kfree(buf);437 return ret;438}439 440static int hidinput_get_battery_property(struct power_supply *psy,441 enum power_supply_property prop,442 union power_supply_propval *val)443{444 struct hid_device *dev = power_supply_get_drvdata(psy);445 int value;446 int ret = 0;447 448 switch (prop) {449 case POWER_SUPPLY_PROP_PRESENT:450 case POWER_SUPPLY_PROP_ONLINE:451 val->intval = 1;452 break;453 454 case POWER_SUPPLY_PROP_CAPACITY:455 if (dev->battery_status != HID_BATTERY_REPORTED &&456 !dev->battery_avoid_query) {457 value = hidinput_query_battery_capacity(dev);458 if (value < 0)459 return value;460 } else {461 value = dev->battery_capacity;462 }463 464 val->intval = value;465 break;466 467 case POWER_SUPPLY_PROP_MODEL_NAME:468 val->strval = dev->name;469 break;470 471 case POWER_SUPPLY_PROP_STATUS:472 if (dev->battery_status != HID_BATTERY_REPORTED &&473 !dev->battery_avoid_query) {474 value = hidinput_query_battery_capacity(dev);475 if (value < 0)476 return value;477 478 dev->battery_capacity = value;479 dev->battery_status = HID_BATTERY_QUERIED;480 }481 482 if (dev->battery_status == HID_BATTERY_UNKNOWN)483 val->intval = POWER_SUPPLY_STATUS_UNKNOWN;484 else485 val->intval = dev->battery_charge_status;486 break;487 488 case POWER_SUPPLY_PROP_SCOPE:489 val->intval = POWER_SUPPLY_SCOPE_DEVICE;490 break;491 492 default:493 ret = -EINVAL;494 break;495 }496 497 return ret;498}499 500static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,501 struct hid_field *field, bool is_percentage)502{503 struct power_supply_desc *psy_desc;504 struct power_supply_config psy_cfg = { .drv_data = dev, };505 unsigned quirks;506 s32 min, max;507 int error;508 509 if (dev->battery)510 return 0; /* already initialized? */511 512 quirks = find_battery_quirk(dev);513 514 hid_dbg(dev, "device %x:%x:%x %d quirks %d\n",515 dev->bus, dev->vendor, dev->product, dev->version, quirks);516 517 if (quirks & HID_BATTERY_QUIRK_IGNORE)518 return 0;519 520 psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL);521 if (!psy_desc)522 return -ENOMEM;523 524 psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery",525 strlen(dev->uniq) ?526 dev->uniq : dev_name(&dev->dev));527 if (!psy_desc->name) {528 error = -ENOMEM;529 goto err_free_mem;530 }531 532 psy_desc->type = POWER_SUPPLY_TYPE_BATTERY;533 psy_desc->properties = hidinput_battery_props;534 psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props);535 psy_desc->use_for_apm = 0;536 psy_desc->get_property = hidinput_get_battery_property;537 538 min = field->logical_minimum;539 max = field->logical_maximum;540 541 if (is_percentage || (quirks & HID_BATTERY_QUIRK_PERCENT)) {542 min = 0;543 max = 100;544 }545 546 if (quirks & HID_BATTERY_QUIRK_FEATURE)547 report_type = HID_FEATURE_REPORT;548 549 dev->battery_min = min;550 dev->battery_max = max;551 dev->battery_report_type = report_type;552 dev->battery_report_id = field->report->id;553 dev->battery_charge_status = POWER_SUPPLY_STATUS_DISCHARGING;554 555 /*556 * Stylus is normally not connected to the device and thus we557 * can't query the device and get meaningful battery strength.558 * We have to wait for the device to report it on its own.559 */560 dev->battery_avoid_query = report_type == HID_INPUT_REPORT &&561 field->physical == HID_DG_STYLUS;562 563 if (quirks & HID_BATTERY_QUIRK_AVOID_QUERY)564 dev->battery_avoid_query = true;565 566 dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg);567 if (IS_ERR(dev->battery)) {568 error = PTR_ERR(dev->battery);569 hid_warn(dev, "can't register power supply: %d\n", error);570 goto err_free_name;571 }572 573 power_supply_powers(dev->battery, &dev->dev);574 return 0;575 576err_free_name:577 kfree(psy_desc->name);578err_free_mem:579 kfree(psy_desc);580 dev->battery = NULL;581 return error;582}583 584static void hidinput_cleanup_battery(struct hid_device *dev)585{586 const struct power_supply_desc *psy_desc;587 588 if (!dev->battery)589 return;590 591 psy_desc = dev->battery->desc;592 power_supply_unregister(dev->battery);593 kfree(psy_desc->name);594 kfree(psy_desc);595 dev->battery = NULL;596}597 598static void hidinput_update_battery(struct hid_device *dev, int value)599{600 int capacity;601 602 if (!dev->battery)603 return;604 605 if (value == 0 || value < dev->battery_min || value > dev->battery_max)606 return;607 608 capacity = hidinput_scale_battery_capacity(dev, value);609 610 if (dev->battery_status != HID_BATTERY_REPORTED ||611 capacity != dev->battery_capacity ||612 ktime_after(ktime_get_coarse(), dev->battery_ratelimit_time)) {613 dev->battery_capacity = capacity;614 dev->battery_status = HID_BATTERY_REPORTED;615 dev->battery_ratelimit_time =616 ktime_add_ms(ktime_get_coarse(), 30 * 1000);617 power_supply_changed(dev->battery);618 }619}620 621static bool hidinput_set_battery_charge_status(struct hid_device *dev,622 unsigned int usage, int value)623{624 switch (usage) {625 case HID_BAT_CHARGING:626 dev->battery_charge_status = value ?627 POWER_SUPPLY_STATUS_CHARGING :628 POWER_SUPPLY_STATUS_DISCHARGING;629 return true;630 }631 632 return false;633}634#else /* !CONFIG_HID_BATTERY_STRENGTH */635static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type,636 struct hid_field *field, bool is_percentage)637{638 return 0;639}640 641static void hidinput_cleanup_battery(struct hid_device *dev)642{643}644 645static void hidinput_update_battery(struct hid_device *dev, int value)646{647}648 649static bool hidinput_set_battery_charge_status(struct hid_device *dev,650 unsigned int usage, int value)651{652 return false;653}654#endif /* CONFIG_HID_BATTERY_STRENGTH */655 656static bool hidinput_field_in_collection(struct hid_device *device, struct hid_field *field,657 unsigned int type, unsigned int usage)658{659 struct hid_collection *collection;660 661 collection = &device->collection[field->usage->collection_index];662 663 return collection->type == type && collection->usage == usage;664}665 666static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field,667 struct hid_usage *usage, unsigned int usage_index)668{669 struct input_dev *input = hidinput->input;670 struct hid_device *device = input_get_drvdata(input);671 const struct usage_priority *usage_priority = NULL;672 int max = 0, code;673 unsigned int i = 0;674 unsigned long *bit = NULL;675 676 field->hidinput = hidinput;677 678 if (field->flags & HID_MAIN_ITEM_CONSTANT)679 goto ignore;680 681 /* Ignore if report count is out of bounds. */682 if (field->report_count < 1)683 goto ignore;684 685 /* only LED usages are supported in output fields */686 if (field->report_type == HID_OUTPUT_REPORT &&687 (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) {688 goto ignore;689 }690 691 /* assign a priority based on the static list declared here */692 for (i = 0; i < ARRAY_SIZE(hidinput_usages_priorities); i++) {693 if (usage->hid == hidinput_usages_priorities[i].usage) {694 usage_priority = &hidinput_usages_priorities[i];695 696 field->usages_priorities[usage_index] =697 (ARRAY_SIZE(hidinput_usages_priorities) - i) << 8;698 break;699 }700 }701 702 /*703 * For slotted devices, we need to also add the slot index704 * in the priority.705 */706 if (usage_priority && usage_priority->global)707 field->usages_priorities[usage_index] |=708 usage_priority->slot_overwrite;709 else710 field->usages_priorities[usage_index] |=711 (0xff - field->slot_idx) << 16;712 713 if (device->driver->input_mapping) {714 int ret = device->driver->input_mapping(device, hidinput, field,715 usage, &bit, &max);716 if (ret > 0)717 goto mapped;718 if (ret < 0)719 goto ignore;720 }721 722 switch (usage->hid & HID_USAGE_PAGE) {723 case HID_UP_UNDEFINED:724 goto ignore;725 726 case HID_UP_KEYBOARD:727 set_bit(EV_REP, input->evbit);728 729 if ((usage->hid & HID_USAGE) < 256) {730 if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore;731 map_key_clear(hid_keyboard[usage->hid & HID_USAGE]);732 } else733 map_key(KEY_UNKNOWN);734 735 break;736 737 case HID_UP_BUTTON:738 code = ((usage->hid - 1) & HID_USAGE);739 740 switch (field->application) {741 case HID_GD_MOUSE:742 case HID_GD_POINTER: code += BTN_MOUSE; break;743 case HID_GD_JOYSTICK:744 if (code <= 0xf)745 code += BTN_JOYSTICK;746 else747 code += BTN_TRIGGER_HAPPY - 0x10;748 break;749 case HID_GD_GAMEPAD:750 if (code <= 0xf)751 code += BTN_GAMEPAD;752 else753 code += BTN_TRIGGER_HAPPY - 0x10;754 break;755 case HID_CP_CONSUMER_CONTROL:756 if (hidinput_field_in_collection(device, field,757 HID_COLLECTION_NAMED_ARRAY,758 HID_CP_PROGRAMMABLEBUTTONS)) {759 if (code <= 0x1d)760 code += KEY_MACRO1;761 else762 code += BTN_TRIGGER_HAPPY - 0x1e;763 break;764 }765 fallthrough;766 default:767 switch (field->physical) {768 case HID_GD_MOUSE:769 case HID_GD_POINTER: code += BTN_MOUSE; break;770 case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break;771 case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break;772 default: code += BTN_MISC;773 }774 }775 776 map_key(code);777 break;778 779 case HID_UP_SIMULATION:780 switch (usage->hid & 0xffff) {781 case 0xba: map_abs(ABS_RUDDER); break;782 case 0xbb: map_abs(ABS_THROTTLE); break;783 case 0xc4: map_abs(ABS_GAS); break;784 case 0xc5: map_abs(ABS_BRAKE); break;785 case 0xc8: map_abs(ABS_WHEEL); break;786 default: goto ignore;787 }788 break;789 790 case HID_UP_GENDESK:791 if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */792 switch (usage->hid & 0xf) {793 case 0x1: map_key_clear(KEY_POWER); break;794 case 0x2: map_key_clear(KEY_SLEEP); break;795 case 0x3: map_key_clear(KEY_WAKEUP); break;796 case 0x4: map_key_clear(KEY_CONTEXT_MENU); break;797 case 0x5: map_key_clear(KEY_MENU); break;798 case 0x6: map_key_clear(KEY_PROG1); break;799 case 0x7: map_key_clear(KEY_HELP); break;800 case 0x8: map_key_clear(KEY_EXIT); break;801 case 0x9: map_key_clear(KEY_SELECT); break;802 case 0xa: map_key_clear(KEY_RIGHT); break;803 case 0xb: map_key_clear(KEY_LEFT); break;804 case 0xc: map_key_clear(KEY_UP); break;805 case 0xd: map_key_clear(KEY_DOWN); break;806 case 0xe: map_key_clear(KEY_POWER2); break;807 case 0xf: map_key_clear(KEY_RESTART); break;808 default: goto unknown;809 }810 break;811 }812 813 if ((usage->hid & 0xf0) == 0x90) { /* SystemControl*/814 switch (usage->hid & 0xf) {815 case 0xb: map_key_clear(KEY_DO_NOT_DISTURB); break;816 default: goto ignore;817 }818 break;819 }820 821 if ((usage->hid & 0xf0) == 0xa0) { /* SystemControl */822 switch (usage->hid & 0xf) {823 case 0x9: map_key_clear(KEY_MICMUTE); break;824 case 0xa: map_key_clear(KEY_ACCESSIBILITY); break;825 default: goto ignore;826 }827 break;828 }829 830 if ((usage->hid & 0xf0) == 0xb0) { /* SC - Display */831 switch (usage->hid & 0xf) {832 case 0x05: map_key_clear(KEY_SWITCHVIDEOMODE); break;833 default: goto ignore;834 }835 break;836 }837 838 /*839 * Some lazy vendors declare 255 usages for System Control,840 * leading to the creation of ABS_X|Y axis and too many others.841 * It wouldn't be a problem if joydev doesn't consider the842 * device as a joystick then.843 */844 if (field->application == HID_GD_SYSTEM_CONTROL)845 goto ignore;846 847 if ((usage->hid & 0xf0) == 0x90) { /* D-pad */848 switch (usage->hid) {849 case HID_GD_UP: usage->hat_dir = 1; break;850 case HID_GD_DOWN: usage->hat_dir = 5; break;851 case HID_GD_RIGHT: usage->hat_dir = 3; break;852 case HID_GD_LEFT: usage->hat_dir = 7; break;853 default: goto unknown;854 }855 if (field->dpad) {856 map_abs(field->dpad);857 goto ignore;858 }859 map_abs(ABS_HAT0X);860 break;861 }862 863 switch (usage->hid) {864 /* These usage IDs map directly to the usage codes. */865 case HID_GD_X: case HID_GD_Y: case HID_GD_Z:866 case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ:867 if (field->flags & HID_MAIN_ITEM_RELATIVE)868 map_rel(usage->hid & 0xf);869 else870 map_abs_clear(usage->hid & 0xf);871 break;872 873 case HID_GD_WHEEL:874 if (field->flags & HID_MAIN_ITEM_RELATIVE) {875 set_bit(REL_WHEEL, input->relbit);876 map_rel(REL_WHEEL_HI_RES);877 } else {878 map_abs(usage->hid & 0xf);879 }880 break;881 case HID_GD_SLIDER: case HID_GD_DIAL:882 if (field->flags & HID_MAIN_ITEM_RELATIVE)883 map_rel(usage->hid & 0xf);884 else885 map_abs(usage->hid & 0xf);886 break;887 888 case HID_GD_HATSWITCH:889 usage->hat_min = field->logical_minimum;890 usage->hat_max = field->logical_maximum;891 map_abs(ABS_HAT0X);892 break;893 894 case HID_GD_START: map_key_clear(BTN_START); break;895 case HID_GD_SELECT: map_key_clear(BTN_SELECT); break;896 897 case HID_GD_RFKILL_BTN:898 /* MS wireless radio ctl extension, also check CA */899 if (field->application == HID_GD_WIRELESS_RADIO_CTLS) {900 map_key_clear(KEY_RFKILL);901 /* We need to simulate the btn release */902 field->flags |= HID_MAIN_ITEM_RELATIVE;903 break;904 }905 goto unknown;906 907 default: goto unknown;908 }909 910 break;911 912 case HID_UP_LED:913 switch (usage->hid & 0xffff) { /* HID-Value: */914 case 0x01: map_led (LED_NUML); break; /* "Num Lock" */915 case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */916 case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */917 case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */918 case 0x05: map_led (LED_KANA); break; /* "Kana" */919 case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */920 case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */921 case 0x09: map_led (LED_MUTE); break; /* "Mute" */922 case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */923 case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */924 case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */925 926 default: goto ignore;927 }928 break;929 930 case HID_UP_DIGITIZER:931 if ((field->application & 0xff) == 0x01) /* Digitizer */932 __set_bit(INPUT_PROP_POINTER, input->propbit);933 else if ((field->application & 0xff) == 0x02) /* Pen */934 __set_bit(INPUT_PROP_DIRECT, input->propbit);935 936 switch (usage->hid & 0xff) {937 case 0x00: /* Undefined */938 goto ignore;939 940 case 0x30: /* TipPressure */941 if (!test_bit(BTN_TOUCH, input->keybit)) {942 device->quirks |= HID_QUIRK_NOTOUCH;943 set_bit(EV_KEY, input->evbit);944 set_bit(BTN_TOUCH, input->keybit);945 }946 map_abs_clear(ABS_PRESSURE);947 break;948 949 case 0x32: /* InRange */950 switch (field->physical) {951 case HID_DG_PUCK:952 map_key(BTN_TOOL_MOUSE);953 break;954 case HID_DG_FINGER:955 map_key(BTN_TOOL_FINGER);956 break;957 default:958 /*959 * If the physical is not given,960 * rely on the application.961 */962 if (!field->physical) {963 switch (field->application) {964 case HID_DG_TOUCHSCREEN:965 case HID_DG_TOUCHPAD:966 map_key_clear(BTN_TOOL_FINGER);967 break;968 default:969 map_key_clear(BTN_TOOL_PEN);970 }971 } else {972 map_key(BTN_TOOL_PEN);973 }974 break;975 }976 break;977 978 case 0x3b: /* Battery Strength */979 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false);980 usage->type = EV_PWR;981 return;982 983 case 0x3c: /* Invert */984 device->quirks &= ~HID_QUIRK_NOINVERT;985 map_key_clear(BTN_TOOL_RUBBER);986 break;987 988 case 0x3d: /* X Tilt */989 map_abs_clear(ABS_TILT_X);990 break;991 992 case 0x3e: /* Y Tilt */993 map_abs_clear(ABS_TILT_Y);994 break;995 996 case 0x33: /* Touch */997 case 0x42: /* TipSwitch */998 case 0x43: /* TipSwitch2 */999 device->quirks &= ~HID_QUIRK_NOTOUCH;1000 map_key_clear(BTN_TOUCH);1001 break;1002 1003 case 0x44: /* BarrelSwitch */1004 map_key_clear(BTN_STYLUS);1005 break;1006 1007 case 0x45: /* ERASER */1008 /*1009 * This event is reported when eraser tip touches the surface.1010 * Actual eraser (BTN_TOOL_RUBBER) is set and released either1011 * by Invert if tool reports proximity or by Eraser directly.1012 */1013 if (!test_bit(BTN_TOOL_RUBBER, input->keybit)) {1014 device->quirks |= HID_QUIRK_NOINVERT;1015 set_bit(BTN_TOOL_RUBBER, input->keybit);1016 }1017 map_key_clear(BTN_TOUCH);1018 break;1019 1020 case 0x46: /* TabletPick */1021 case 0x5a: /* SecondaryBarrelSwitch */1022 map_key_clear(BTN_STYLUS2);1023 break;1024 1025 case 0x5b: /* TransducerSerialNumber */1026 case 0x6e: /* TransducerSerialNumber2 */1027 map_msc(MSC_SERIAL);1028 break;1029 1030 default: goto unknown;1031 }1032 break;1033 1034 case HID_UP_TELEPHONY:1035 switch (usage->hid & HID_USAGE) {1036 case 0x2f: map_key_clear(KEY_MICMUTE); break;1037 case 0xb0: map_key_clear(KEY_NUMERIC_0); break;1038 case 0xb1: map_key_clear(KEY_NUMERIC_1); break;1039 case 0xb2: map_key_clear(KEY_NUMERIC_2); break;1040 case 0xb3: map_key_clear(KEY_NUMERIC_3); break;1041 case 0xb4: map_key_clear(KEY_NUMERIC_4); break;1042 case 0xb5: map_key_clear(KEY_NUMERIC_5); break;1043 case 0xb6: map_key_clear(KEY_NUMERIC_6); break;1044 case 0xb7: map_key_clear(KEY_NUMERIC_7); break;1045 case 0xb8: map_key_clear(KEY_NUMERIC_8); break;1046 case 0xb9: map_key_clear(KEY_NUMERIC_9); break;1047 case 0xba: map_key_clear(KEY_NUMERIC_STAR); break;1048 case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break;1049 case 0xbc: map_key_clear(KEY_NUMERIC_A); break;1050 case 0xbd: map_key_clear(KEY_NUMERIC_B); break;1051 case 0xbe: map_key_clear(KEY_NUMERIC_C); break;1052 case 0xbf: map_key_clear(KEY_NUMERIC_D); break;1053 default: goto ignore;1054 }1055 break;1056 1057 case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */1058 switch (usage->hid & HID_USAGE) {1059 case 0x000: goto ignore;1060 case 0x030: map_key_clear(KEY_POWER); break;1061 case 0x031: map_key_clear(KEY_RESTART); break;1062 case 0x032: map_key_clear(KEY_SLEEP); break;1063 case 0x034: map_key_clear(KEY_SLEEP); break;1064 case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break;1065 case 0x036: map_key_clear(BTN_MISC); break;1066 1067 case 0x040: map_key_clear(KEY_MENU); break; /* Menu */1068 case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */1069 case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */1070 case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */1071 case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */1072 case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */1073 case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */1074 case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */1075 case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */1076 1077 case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */1078 case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */1079 case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */1080 case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */1081 case 0x069: map_key_clear(KEY_RED); break;1082 case 0x06a: map_key_clear(KEY_GREEN); break;1083 case 0x06b: map_key_clear(KEY_BLUE); break;1084 case 0x06c: map_key_clear(KEY_YELLOW); break;1085 case 0x06d: map_key_clear(KEY_ASPECT_RATIO); break;1086 1087 case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break;1088 case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break;1089 case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break;1090 case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break;1091 case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break;1092 case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break;1093 1094 case 0x076: map_key_clear(KEY_CAMERA_ACCESS_ENABLE); break;1095 case 0x077: map_key_clear(KEY_CAMERA_ACCESS_DISABLE); break;1096 case 0x078: map_key_clear(KEY_CAMERA_ACCESS_TOGGLE); break;1097 1098 case 0x079: map_key_clear(KEY_KBDILLUMUP); break;1099 case 0x07a: map_key_clear(KEY_KBDILLUMDOWN); break;1100 case 0x07c: map_key_clear(KEY_KBDILLUMTOGGLE); break;1101 1102 case 0x082: map_key_clear(KEY_VIDEO_NEXT); break;1103 case 0x083: map_key_clear(KEY_LAST); break;1104 case 0x084: map_key_clear(KEY_ENTER); break;1105 case 0x088: map_key_clear(KEY_PC); break;1106 case 0x089: map_key_clear(KEY_TV); break;1107 case 0x08a: map_key_clear(KEY_WWW); break;1108 case 0x08b: map_key_clear(KEY_DVD); break;1109 case 0x08c: map_key_clear(KEY_PHONE); break;1110 case 0x08d: map_key_clear(KEY_PROGRAM); break;1111 case 0x08e: map_key_clear(KEY_VIDEOPHONE); break;1112 case 0x08f: map_key_clear(KEY_GAMES); break;1113 case 0x090: map_key_clear(KEY_MEMO); break;1114 case 0x091: map_key_clear(KEY_CD); break;1115 case 0x092: map_key_clear(KEY_VCR); break;1116 case 0x093: map_key_clear(KEY_TUNER); break;1117 case 0x094: map_key_clear(KEY_EXIT); break;1118 case 0x095: map_key_clear(KEY_HELP); break;1119 case 0x096: map_key_clear(KEY_TAPE); break;1120 case 0x097: map_key_clear(KEY_TV2); break;1121 case 0x098: map_key_clear(KEY_SAT); break;1122 case 0x09a: map_key_clear(KEY_PVR); break;1123 1124 case 0x09c: map_key_clear(KEY_CHANNELUP); break;1125 case 0x09d: map_key_clear(KEY_CHANNELDOWN); break;1126 case 0x0a0: map_key_clear(KEY_VCR2); break;1127 1128 case 0x0b0: map_key_clear(KEY_PLAY); break;1129 case 0x0b1: map_key_clear(KEY_PAUSE); break;1130 case 0x0b2: map_key_clear(KEY_RECORD); break;1131 case 0x0b3: map_key_clear(KEY_FASTFORWARD); break;1132 case 0x0b4: map_key_clear(KEY_REWIND); break;1133 case 0x0b5: map_key_clear(KEY_NEXTSONG); break;1134 case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break;1135 case 0x0b7: map_key_clear(KEY_STOPCD); break;1136 case 0x0b8: map_key_clear(KEY_EJECTCD); break;1137 case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break;1138 case 0x0b9: map_key_clear(KEY_SHUFFLE); break;1139 case 0x0bf: map_key_clear(KEY_SLOW); break;1140 1141 case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break;1142 case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break;1143 1144 case 0x0d8: map_key_clear(KEY_DICTATE); break;1145 case 0x0d9: map_key_clear(KEY_EMOJI_PICKER); break;1146 1147 case 0x0e0: map_abs_clear(ABS_VOLUME); break;1148 case 0x0e2: map_key_clear(KEY_MUTE); break;1149 case 0x0e5: map_key_clear(KEY_BASSBOOST); break;1150 case 0x0e9: map_key_clear(KEY_VOLUMEUP); break;1151 case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break;1152 case 0x0f5: map_key_clear(KEY_SLOW); break;1153 1154 case 0x181: map_key_clear(KEY_BUTTONCONFIG); break;1155 case 0x182: map_key_clear(KEY_BOOKMARKS); break;1156 case 0x183: map_key_clear(KEY_CONFIG); break;1157 case 0x184: map_key_clear(KEY_WORDPROCESSOR); break;1158 case 0x185: map_key_clear(KEY_EDITOR); break;1159 case 0x186: map_key_clear(KEY_SPREADSHEET); break;1160 case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break;1161 case 0x188: map_key_clear(KEY_PRESENTATION); break;1162 case 0x189: map_key_clear(KEY_DATABASE); break;1163 case 0x18a: map_key_clear(KEY_MAIL); break;1164 case 0x18b: map_key_clear(KEY_NEWS); break;1165 case 0x18c: map_key_clear(KEY_VOICEMAIL); break;1166 case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break;1167 case 0x18e: map_key_clear(KEY_CALENDAR); break;1168 case 0x18f: map_key_clear(KEY_TASKMANAGER); break;1169 case 0x190: map_key_clear(KEY_JOURNAL); break;1170 case 0x191: map_key_clear(KEY_FINANCE); break;1171 case 0x192: map_key_clear(KEY_CALC); break;1172 case 0x193: map_key_clear(KEY_PLAYER); break;1173 case 0x194: map_key_clear(KEY_FILE); break;1174 case 0x196: map_key_clear(KEY_WWW); break;1175 case 0x199: map_key_clear(KEY_CHAT); break;1176 case 0x19c: map_key_clear(KEY_LOGOFF); break;1177 case 0x19e: map_key_clear(KEY_COFFEE); break;1178 case 0x19f: map_key_clear(KEY_CONTROLPANEL); break;1179 case 0x1a2: map_key_clear(KEY_APPSELECT); break;1180 case 0x1a3: map_key_clear(KEY_NEXT); break;1181 case 0x1a4: map_key_clear(KEY_PREVIOUS); break;1182 case 0x1a6: map_key_clear(KEY_HELP); break;1183 case 0x1a7: map_key_clear(KEY_DOCUMENTS); break;1184 case 0x1ab: map_key_clear(KEY_SPELLCHECK); break;1185 case 0x1ae: map_key_clear(KEY_KEYBOARD); break;1186 case 0x1b1: map_key_clear(KEY_SCREENSAVER); break;1187 case 0x1b4: map_key_clear(KEY_FILE); break;1188 case 0x1b6: map_key_clear(KEY_IMAGES); break;1189 case 0x1b7: map_key_clear(KEY_AUDIO); break;1190 case 0x1b8: map_key_clear(KEY_VIDEO); break;1191 case 0x1bc: map_key_clear(KEY_MESSENGER); break;1192 case 0x1bd: map_key_clear(KEY_INFO); break;1193 case 0x1cb: map_key_clear(KEY_ASSISTANT); break;1194 case 0x201: map_key_clear(KEY_NEW); break;1195 case 0x202: map_key_clear(KEY_OPEN); break;1196 case 0x203: map_key_clear(KEY_CLOSE); break;1197 case 0x204: map_key_clear(KEY_EXIT); break;1198 case 0x207: map_key_clear(KEY_SAVE); break;1199 case 0x208: map_key_clear(KEY_PRINT); break;1200 case 0x209: map_key_clear(KEY_PROPS); break;1201 case 0x21a: map_key_clear(KEY_UNDO); break;1202 case 0x21b: map_key_clear(KEY_COPY); break;1203 case 0x21c: map_key_clear(KEY_CUT); break;1204 case 0x21d: map_key_clear(KEY_PASTE); break;1205 case 0x21f: map_key_clear(KEY_FIND); break;1206 case 0x221: map_key_clear(KEY_SEARCH); break;1207 case 0x222: map_key_clear(KEY_GOTO); break;1208 case 0x223: map_key_clear(KEY_HOMEPAGE); break;1209 case 0x224: map_key_clear(KEY_BACK); break;1210 case 0x225: map_key_clear(KEY_FORWARD); break;1211 case 0x226: map_key_clear(KEY_STOP); break;1212 case 0x227: map_key_clear(KEY_REFRESH); break;1213 case 0x22a: map_key_clear(KEY_BOOKMARKS); break;1214 case 0x22d: map_key_clear(KEY_ZOOMIN); break;1215 case 0x22e: map_key_clear(KEY_ZOOMOUT); break;1216 case 0x22f: map_key_clear(KEY_ZOOMRESET); break;1217 case 0x232: map_key_clear(KEY_FULL_SCREEN); break;1218 case 0x233: map_key_clear(KEY_SCROLLUP); break;1219 case 0x234: map_key_clear(KEY_SCROLLDOWN); break;1220 case 0x238: /* AC Pan */1221 set_bit(REL_HWHEEL, input->relbit);1222 map_rel(REL_HWHEEL_HI_RES);1223 break;1224 case 0x23d: map_key_clear(KEY_EDIT); break;1225 case 0x25f: map_key_clear(KEY_CANCEL); break;1226 case 0x269: map_key_clear(KEY_INSERT); break;1227 case 0x26a: map_key_clear(KEY_DELETE); break;1228 case 0x279: map_key_clear(KEY_REDO); break;1229 1230 case 0x289: map_key_clear(KEY_REPLY); break;1231 case 0x28b: map_key_clear(KEY_FORWARDMAIL); break;1232 case 0x28c: map_key_clear(KEY_SEND); break;1233 1234 case 0x29d: map_key_clear(KEY_KBD_LAYOUT_NEXT); break;1235 1236 case 0x2a2: map_key_clear(KEY_ALL_APPLICATIONS); break;1237 1238 case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break;1239 case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break;1240 case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break;1241 case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break;1242 case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break;1243 case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break;1244 1245 case 0x29f: map_key_clear(KEY_SCALE); break;1246 1247 default: map_key_clear(KEY_UNKNOWN);1248 }1249 break;1250 1251 case HID_UP_GENDEVCTRLS:1252 switch (usage->hid) {1253 case HID_DC_BATTERYSTRENGTH:1254 hidinput_setup_battery(device, HID_INPUT_REPORT, field, false);1255 usage->type = EV_PWR;1256 return;1257 }1258 goto unknown;1259 1260 case HID_UP_BATTERY:1261 switch (usage->hid) {1262 case HID_BAT_ABSOLUTESTATEOFCHARGE:1263 hidinput_setup_battery(device, HID_INPUT_REPORT, field, true);1264 usage->type = EV_PWR;1265 return;1266 case HID_BAT_CHARGING:1267 usage->type = EV_PWR;1268 return;1269 }1270 goto unknown;1271 case HID_UP_CAMERA:1272 switch (usage->hid & HID_USAGE) {1273 case 0x020:1274 map_key_clear(KEY_CAMERA_FOCUS); break;1275 case 0x021:1276 map_key_clear(KEY_CAMERA); break;1277 default:1278 goto ignore;1279 }1280 break;1281 1282 case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */1283 set_bit(EV_REP, input->evbit);1284 switch (usage->hid & HID_USAGE) {1285 case 0x021: map_key_clear(KEY_PRINT); break;1286 case 0x070: map_key_clear(KEY_HP); break;1287 case 0x071: map_key_clear(KEY_CAMERA); break;1288 case 0x072: map_key_clear(KEY_SOUND); break;1289 case 0x073: map_key_clear(KEY_QUESTION); break;1290 case 0x080: map_key_clear(KEY_EMAIL); break;1291 case 0x081: map_key_clear(KEY_CHAT); break;1292 case 0x082: map_key_clear(KEY_SEARCH); break;1293 case 0x083: map_key_clear(KEY_CONNECT); break;1294 case 0x084: map_key_clear(KEY_FINANCE); break;1295 case 0x085: map_key_clear(KEY_SPORT); break;1296 case 0x086: map_key_clear(KEY_SHOP); break;1297 default: goto ignore;1298 }1299 break;1300 1301 case HID_UP_HPVENDOR2:1302 set_bit(EV_REP, input->evbit);1303 switch (usage->hid & HID_USAGE) {1304 case 0x001: map_key_clear(KEY_MICMUTE); break;1305 case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break;1306 case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break;1307 default: goto ignore;1308 }1309 break;1310 1311 case HID_UP_MSVENDOR:1312 goto ignore;1313 1314 case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */1315 set_bit(EV_REP, input->evbit);1316 goto ignore;1317 1318 case HID_UP_LOGIVENDOR:1319 /* intentional fallback */1320 case HID_UP_LOGIVENDOR2:1321 /* intentional fallback */1322 case HID_UP_LOGIVENDOR3:1323 goto ignore;1324 1325 case HID_UP_PID:1326 switch (usage->hid & HID_USAGE) {1327 case 0xa4: map_key_clear(BTN_DEAD); break;1328 default: goto ignore;1329 }1330 break;1331 1332 default:1333 unknown:1334 if (field->report_size == 1) {1335 if (field->report->type == HID_OUTPUT_REPORT) {1336 map_led(LED_MISC);1337 break;1338 }1339 map_key(BTN_MISC);1340 break;1341 }1342 if (field->flags & HID_MAIN_ITEM_RELATIVE) {1343 map_rel(REL_MISC);1344 break;1345 }1346 map_abs(ABS_MISC);1347 break;1348 }1349 1350mapped:1351 /* Mapping failed, bail out */1352 if (!bit)1353 return;1354 1355 if (device->driver->input_mapped &&1356 device->driver->input_mapped(device, hidinput, field, usage,1357 &bit, &max) < 0) {1358 /*1359 * The driver indicated that no further generic handling1360 * of the usage is desired.1361 */1362 return;1363 }1364 1365 set_bit(usage->type, input->evbit);1366 1367 /*1368 * This part is *really* controversial:1369 * - HID aims at being generic so we should do our best to export1370 * all incoming events1371 * - HID describes what events are, so there is no reason for ABS_X1372 * to be mapped to ABS_Y1373 * - HID is using *_MISC+N as a default value, but nothing prevents1374 * *_MISC+N to overwrite a legitimate even, which confuses userspace1375 * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different1376 * processing)1377 *1378 * If devices still want to use this (at their own risk), they will1379 * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but1380 * the default should be a reliable mapping.1381 */1382 while (usage->code <= max && test_and_set_bit(usage->code, bit)) {1383 if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) {1384 usage->code = find_next_zero_bit(bit,1385 max + 1,1386 usage->code);1387 } else {1388 device->status |= HID_STAT_DUP_DETECTED;1389 goto ignore;1390 }1391 }1392 1393 if (usage->code > max)1394 goto ignore;1395 1396 if (usage->type == EV_ABS) {1397 1398 int a = field->logical_minimum;1399 int b = field->logical_maximum;1400 1401 if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) {1402 a = field->logical_minimum = 0;1403 b = field->logical_maximum = 255;1404 }1405 1406 if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK)1407 input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4);1408 else input_set_abs_params(input, usage->code, a, b, 0, 0);1409 1410 input_abs_set_res(input, usage->code,1411 hidinput_calc_abs_res(field, usage->code));1412 1413 /* use a larger default input buffer for MT devices */1414 if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0)1415 input_set_events_per_packet(input, 60);1416 }1417 1418 if (usage->type == EV_ABS &&1419 (usage->hat_min < usage->hat_max || usage->hat_dir)) {1420 int i;1421 for (i = usage->code; i < usage->code + 2 && i <= max; i++) {1422 input_set_abs_params(input, i, -1, 1, 0, 0);1423 set_bit(i, input->absbit);1424 }1425 if (usage->hat_dir && !field->dpad)1426 field->dpad = usage->code;1427 }1428 1429 /* for those devices which produce Consumer volume usage as relative,1430 * we emulate pressing volumeup/volumedown appropriate number of times1431 * in hidinput_hid_event()1432 */1433 if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) &&1434 (usage->code == ABS_VOLUME)) {1435 set_bit(KEY_VOLUMEUP, input->keybit);1436 set_bit(KEY_VOLUMEDOWN, input->keybit);1437 }1438 1439 if (usage->type == EV_KEY) {1440 set_bit(EV_MSC, input->evbit);1441 set_bit(MSC_SCAN, input->mscbit);1442 }1443 1444 return;1445 1446ignore:1447 usage->type = 0;1448 usage->code = 0;1449}1450 1451static void hidinput_handle_scroll(struct hid_usage *usage,1452 struct input_dev *input,1453 __s32 value)1454{1455 int code;1456 int hi_res, lo_res;1457 1458 if (value == 0)1459 return;1460 1461 if (usage->code == REL_WHEEL_HI_RES)1462 code = REL_WHEEL;1463 else1464 code = REL_HWHEEL;1465 1466 /*1467 * Windows reports one wheel click as value 120. Where a high-res1468 * scroll wheel is present, a fraction of 120 is reported instead.1469 * Our REL_WHEEL_HI_RES axis does the same because all HW must1470 * adhere to the 120 expectation.1471 */1472 hi_res = value * 120/usage->resolution_multiplier;1473 1474 usage->wheel_accumulated += hi_res;1475 lo_res = usage->wheel_accumulated/120;1476 if (lo_res)1477 usage->wheel_accumulated -= lo_res * 120;1478 1479 input_event(input, EV_REL, code, lo_res);1480 input_event(input, EV_REL, usage->code, hi_res);1481}1482 1483static void hid_report_release_tool(struct hid_report *report, struct input_dev *input,1484 unsigned int tool)1485{1486 /* if the given tool is not currently reported, ignore */1487 if (!test_bit(tool, input->key))1488 return;1489 1490 /*1491 * if the given tool was previously set, release it,1492 * release any TOUCH and send an EV_SYN1493 */1494 input_event(input, EV_KEY, BTN_TOUCH, 0);1495 input_event(input, EV_KEY, tool, 0);1496 input_event(input, EV_SYN, SYN_REPORT, 0);1497 1498 report->tool = 0;1499}1500 1501static void hid_report_set_tool(struct hid_report *report, struct input_dev *input,1502 unsigned int new_tool)1503{1504 if (report->tool != new_tool)1505 hid_report_release_tool(report, input, report->tool);1506 1507 input_event(input, EV_KEY, new_tool, 1);1508 report->tool = new_tool;1509}1510 1511void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value)1512{1513 struct input_dev *input;1514 struct hid_report *report = field->report;1515 unsigned *quirks = &hid->quirks;1516 1517 if (!usage->type)1518 return;1519 1520 if (usage->type == EV_PWR) {1521 bool handled = hidinput_set_battery_charge_status(hid, usage->hid, value);1522 1523 if (!handled)1524 hidinput_update_battery(hid, value);1525 1526 return;1527 }1528 1529 if (!field->hidinput)1530 return;1531 1532 input = field->hidinput->input;1533 1534 if (usage->hat_min < usage->hat_max || usage->hat_dir) {1535 int hat_dir = usage->hat_dir;1536 if (!hat_dir)1537 hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1;1538 if (hat_dir < 0 || hat_dir > 8) hat_dir = 0;1539 input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x);1540 input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y);1541 return;1542 }1543 1544 /*1545 * Ignore out-of-range values as per HID specification,1546 * section 5.10 and 6.2.25, when NULL state bit is present.1547 * When it's not, clamp the value to match Microsoft's input1548 * driver as mentioned in "Required HID usages for digitizers":1549 * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp1550 *1551 * The logical_minimum < logical_maximum check is done so that we1552 * don't unintentionally discard values sent by devices which1553 * don't specify logical min and max.1554 */1555 if ((field->flags & HID_MAIN_ITEM_VARIABLE) &&1556 field->logical_minimum < field->logical_maximum) {1557 if (field->flags & HID_MAIN_ITEM_NULL_STATE &&1558 (value < field->logical_minimum ||1559 value > field->logical_maximum)) {1560 dbg_hid("Ignoring out-of-range value %x\n", value);1561 return;1562 }1563 value = clamp(value,1564 field->logical_minimum,1565 field->logical_maximum);1566 }1567 1568 switch (usage->hid) {1569 case HID_DG_ERASER:1570 report->tool_active |= !!value;1571 1572 /*1573 * if eraser is set, we must enforce BTN_TOOL_RUBBER1574 * to accommodate for devices not following the spec.1575 */1576 if (value)1577 hid_report_set_tool(report, input, BTN_TOOL_RUBBER);1578 else if (report->tool != BTN_TOOL_RUBBER)1579 /* value is off, tool is not rubber, ignore */1580 return;1581 else if (*quirks & HID_QUIRK_NOINVERT &&1582 !test_bit(BTN_TOUCH, input->key)) {1583 /*1584 * There is no invert to release the tool, let hid_input1585 * send BTN_TOUCH with scancode and release the tool after.1586 */1587 hid_report_release_tool(report, input, BTN_TOOL_RUBBER);1588 return;1589 }1590 1591 /* let hid-input set BTN_TOUCH */1592 break;1593 1594 case HID_DG_INVERT:1595 report->tool_active |= !!value;1596 1597 /*1598 * If invert is set, we store BTN_TOOL_RUBBER.1599 */1600 if (value)1601 hid_report_set_tool(report, input, BTN_TOOL_RUBBER);1602 else if (!report->tool_active)1603 /* tool_active not set means Invert and Eraser are not set */1604 hid_report_release_tool(report, input, BTN_TOOL_RUBBER);1605 1606 /* no further processing */1607 return;1608 1609 case HID_DG_INRANGE:1610 report->tool_active |= !!value;1611 1612 if (report->tool_active) {1613 /*1614 * if tool is not set but is marked as active,1615 * assume ours1616 */1617 if (!report->tool)1618 report->tool = usage->code;1619 1620 /* drivers may have changed the value behind our back, resend it */1621 hid_report_set_tool(report, input, report->tool);1622 } else {1623 hid_report_release_tool(report, input, usage->code);1624 }1625 1626 /* reset tool_active for the next event */1627 report->tool_active = false;1628 1629 /* no further processing */1630 return;1631 1632 case HID_DG_TIPSWITCH:1633 report->tool_active |= !!value;1634 1635 /* if tool is set to RUBBER we should ignore the current value */1636 if (report->tool == BTN_TOOL_RUBBER)1637 return;1638 1639 break;1640 1641 case HID_DG_TIPPRESSURE:1642 if (*quirks & HID_QUIRK_NOTOUCH) {1643 int a = field->logical_minimum;1644 int b = field->logical_maximum;1645 1646 if (value > a + ((b - a) >> 3)) {1647 input_event(input, EV_KEY, BTN_TOUCH, 1);1648 report->tool_active = true;1649 }1650 }1651 break;1652 1653 case HID_UP_PID | 0x83UL: /* Simultaneous Effects Max */1654 dbg_hid("Maximum Effects - %d\n",value);1655 return;1656 1657 case HID_UP_PID | 0x7fUL:1658 dbg_hid("PID Pool Report\n");1659 return;1660 }1661 1662 switch (usage->type) {1663 case EV_KEY:1664 if (usage->code == 0) /* Key 0 is "unassigned", not KEY_UNKNOWN */1665 return;1666 break;1667 1668 case EV_REL:1669 if (usage->code == REL_WHEEL_HI_RES ||1670 usage->code == REL_HWHEEL_HI_RES) {1671 hidinput_handle_scroll(usage, input, value);1672 return;1673 }1674 break;1675 1676 case EV_ABS:1677 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&1678 usage->code == ABS_VOLUME) {1679 int count = abs(value);1680 int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN;1681 int i;1682 1683 for (i = 0; i < count; i++) {1684 input_event(input, EV_KEY, direction, 1);1685 input_sync(input);1686 input_event(input, EV_KEY, direction, 0);1687 input_sync(input);1688 }1689 return;1690 1691 } else if (((*quirks & HID_QUIRK_X_INVERT) && usage->code == ABS_X) ||1692 ((*quirks & HID_QUIRK_Y_INVERT) && usage->code == ABS_Y))1693 value = field->logical_maximum - value;1694 break;1695 }1696 1697 /*1698 * Ignore reports for absolute data if the data didn't change. This is1699 * not only an optimization but also fixes 'dead' key reports. Some1700 * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID1701 * 0x31 and 0x32) report multiple keys, even though a localized keyboard1702 * can only have one of them physically available. The 'dead' keys1703 * report constant 0. As all map to the same keycode, they'd confuse1704 * the input layer. If we filter the 'dead' keys on the HID level, we1705 * skip the keycode translation and only forward real events.1706 */1707 if (!(field->flags & (HID_MAIN_ITEM_RELATIVE |1708 HID_MAIN_ITEM_BUFFERED_BYTE)) &&1709 (field->flags & HID_MAIN_ITEM_VARIABLE) &&1710 usage->usage_index < field->maxusage &&1711 value == field->value[usage->usage_index])1712 return;1713 1714 /* report the usage code as scancode if the key status has changed */1715 if (usage->type == EV_KEY &&1716 (!test_bit(usage->code, input->key)) == value)1717 input_event(input, EV_MSC, MSC_SCAN, usage->hid);1718 1719 input_event(input, usage->type, usage->code, value);1720 1721 if ((field->flags & HID_MAIN_ITEM_RELATIVE) &&1722 usage->type == EV_KEY && value) {1723 input_sync(input);1724 input_event(input, usage->type, usage->code, 0);1725 }1726}1727 1728void hidinput_report_event(struct hid_device *hid, struct hid_report *report)1729{1730 struct hid_input *hidinput;1731 1732 if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC)1733 return;1734 1735 list_for_each_entry(hidinput, &hid->inputs, list)1736 input_sync(hidinput->input);1737}1738EXPORT_SYMBOL_GPL(hidinput_report_event);1739 1740static int hidinput_find_field(struct hid_device *hid, unsigned int type,1741 unsigned int code, struct hid_field **field)1742{1743 struct hid_report *report;1744 int i, j;1745 1746 list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) {1747 for (i = 0; i < report->maxfield; i++) {1748 *field = report->field[i];1749 for (j = 0; j < (*field)->maxusage; j++)1750 if ((*field)->usage[j].type == type && (*field)->usage[j].code == code)1751 return j;1752 }1753 }1754 return -1;1755}1756 1757struct hid_field *hidinput_get_led_field(struct hid_device *hid)1758{1759 struct hid_report *report;1760 struct hid_field *field;1761 int i, j;1762 1763 list_for_each_entry(report,1764 &hid->report_enum[HID_OUTPUT_REPORT].report_list,1765 list) {1766 for (i = 0; i < report->maxfield; i++) {1767 field = report->field[i];1768 for (j = 0; j < field->maxusage; j++)1769 if (field->usage[j].type == EV_LED)1770 return field;1771 }1772 }1773 return NULL;1774}1775EXPORT_SYMBOL_GPL(hidinput_get_led_field);1776 1777unsigned int hidinput_count_leds(struct hid_device *hid)1778{1779 struct hid_report *report;1780 struct hid_field *field;1781 int i, j;1782 unsigned int count = 0;1783 1784 list_for_each_entry(report,1785 &hid->report_enum[HID_OUTPUT_REPORT].report_list,1786 list) {1787 for (i = 0; i < report->maxfield; i++) {1788 field = report->field[i];1789 for (j = 0; j < field->maxusage; j++)1790 if (field->usage[j].type == EV_LED &&1791 field->value[j])1792 count += 1;1793 }1794 }1795 return count;1796}1797EXPORT_SYMBOL_GPL(hidinput_count_leds);1798 1799static void hidinput_led_worker(struct work_struct *work)1800{1801 struct hid_device *hid = container_of(work, struct hid_device,1802 led_work);1803 struct hid_field *field;1804 struct hid_report *report;1805 int ret;1806 u32 len;1807 __u8 *buf;1808 1809 field = hidinput_get_led_field(hid);1810 if (!field)1811 return;1812 1813 /*1814 * field->report is accessed unlocked regarding HID core. So there might1815 * be another incoming SET-LED request from user-space, which changes1816 * the LED state while we assemble our outgoing buffer. However, this1817 * doesn't matter as hid_output_report() correctly converts it into a1818 * boolean value no matter what information is currently set on the LED1819 * field (even garbage). So the remote device will always get a valid1820 * request.1821 * And in case we send a wrong value, a next led worker is spawned1822 * for every SET-LED request so the following worker will send the1823 * correct value, guaranteed!1824 */1825 1826 report = field->report;1827 1828 /* use custom SET_REPORT request if possible (asynchronous) */1829 if (hid->ll_driver->request)1830 return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT);1831 1832 /* fall back to generic raw-output-report */1833 len = hid_report_len(report);1834 buf = hid_alloc_report_buf(report, GFP_KERNEL);1835 if (!buf)1836 return;1837 1838 hid_output_report(report, buf);1839 /* synchronous output report */1840 ret = hid_hw_output_report(hid, buf, len);1841 if (ret == -ENOSYS)1842 hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT,1843 HID_REQ_SET_REPORT);1844 kfree(buf);1845}1846 1847static HWJS_SUSPENDS int hidinput_input_event(struct input_dev *dev, unsigned int type,1848 unsigned int code, int value)1849{1850 struct hid_device *hid = input_get_drvdata(dev);1851 struct hid_field *field;1852 int offset;1853 1854 if (type == EV_FF)1855 return input_ff_event(dev, type, code, value);1856 1857 if (type != EV_LED)1858 return -1;1859 1860 if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) {1861 hid_warn(dev, "event field not found\n");1862 return -1;1863 }1864 1865 hid_set_field(field, offset, value);1866 1867 schedule_work(&hid->led_work);1868 return 0;1869}1870 1871static int hidinput_open(struct input_dev *dev)1872{1873 struct hid_device *hid = input_get_drvdata(dev);1874 1875 return hid_hw_open(hid);1876}1877 1878static void hidinput_close(struct input_dev *dev)1879{1880 struct hid_device *hid = input_get_drvdata(dev);1881 1882 hid_hw_close(hid);1883}1884 1885static bool __hidinput_change_resolution_multipliers(struct hid_device *hid,1886 struct hid_report *report, bool use_logical_max)1887{1888 struct hid_usage *usage;1889 bool update_needed = false;1890 bool get_report_completed = false;1891 int i, j;1892 1893 if (report->maxfield == 0)1894 return false;1895 1896 for (i = 0; i < report->maxfield; i++) {1897 __s32 value = use_logical_max ?1898 report->field[i]->logical_maximum :1899 report->field[i]->logical_minimum;1900 1901 /* There is no good reason for a Resolution1902 * Multiplier to have a count other than 1.1903 * Ignore that case.1904 */1905 if (report->field[i]->report_count != 1)1906 continue;1907 1908 for (j = 0; j < report->field[i]->maxusage; j++) {1909 usage = &report->field[i]->usage[j];1910 1911 if (usage->hid != HID_GD_RESOLUTION_MULTIPLIER)1912 continue;1913 1914 /*1915 * If we have more than one feature within this1916 * report we need to fill in the bits from the1917 * others before we can overwrite the ones for the1918 * Resolution Multiplier.1919 *1920 * But if we're not allowed to read from the device,1921 * we just bail. Such a device should not exist1922 * anyway.1923 */1924 if (!get_report_completed && report->maxfield > 1) {1925 if (hid->quirks & HID_QUIRK_NO_INIT_REPORTS)1926 return update_needed;1927 1928 hid_hw_request(hid, report, HID_REQ_GET_REPORT);1929 hid_hw_wait(hid);1930 get_report_completed = true;1931 }1932 1933 report->field[i]->value[j] = value;1934 update_needed = true;1935 }1936 }1937 1938 return update_needed;1939}1940 1941static void hidinput_change_resolution_multipliers(struct hid_device *hid)1942{1943 struct hid_report_enum *rep_enum;1944 struct hid_report *rep;1945 int ret;1946 1947 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];1948 list_for_each_entry(rep, &rep_enum->report_list, list) {1949 bool update_needed = __hidinput_change_resolution_multipliers(hid,1950 rep, true);1951 1952 if (update_needed) {1953 ret = __hid_request(hid, rep, HID_REQ_SET_REPORT);1954 if (ret) {1955 __hidinput_change_resolution_multipliers(hid,1956 rep, false);1957 return;1958 }1959 }1960 }1961 1962 /* refresh our structs */1963 hid_setup_resolution_multiplier(hid);1964}1965 1966static void report_features(struct hid_device *hid)1967{1968 struct hid_driver *drv = hid->driver;1969 struct hid_report_enum *rep_enum;1970 struct hid_report *rep;1971 struct hid_usage *usage;1972 int i, j;1973 1974 rep_enum = &hid->report_enum[HID_FEATURE_REPORT];1975 list_for_each_entry(rep, &rep_enum->report_list, list)1976 for (i = 0; i < rep->maxfield; i++) {1977 /* Ignore if report count is out of bounds. */1978 if (rep->field[i]->report_count < 1)1979 continue;1980 1981 for (j = 0; j < rep->field[i]->maxusage; j++) {1982 usage = &rep->field[i]->usage[j];1983 1984 /* Verify if Battery Strength feature is available */1985 if (usage->hid == HID_DC_BATTERYSTRENGTH)1986 hidinput_setup_battery(hid, HID_FEATURE_REPORT,1987 rep->field[i], false);1988 1989 if (drv->feature_mapping)1990 drv->feature_mapping(hid, rep->field[i], usage);1991 }1992 }1993}1994 1995static struct hid_input *hidinput_allocate(struct hid_device *hid,1996 unsigned int application)1997{1998 struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL);1999 struct input_dev *input_dev = input_allocate_device();2000 const char *suffix = NULL;2001 size_t suffix_len, name_len;2002 2003 if (!hidinput || !input_dev)2004 goto fail;2005 2006 if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) &&2007 hid->maxapplication > 1) {2008 switch (application) {2009 case HID_GD_KEYBOARD:2010 suffix = "Keyboard";2011 break;2012 case HID_GD_KEYPAD:2013 suffix = "Keypad";2014 break;2015 case HID_GD_MOUSE:2016 suffix = "Mouse";2017 break;2018 case HID_DG_PEN:2019 /*2020 * yes, there is an issue here:2021 * DG_PEN -> "Stylus"2022 * DG_STYLUS -> "Pen"2023 * But changing this now means users with config snippets2024 * will have to change it and the test suite will not be happy.2025 */2026 suffix = "Stylus";2027 break;2028 case HID_DG_STYLUS:2029 suffix = "Pen";2030 break;2031 case HID_DG_TOUCHSCREEN:2032 suffix = "Touchscreen";2033 break;2034 case HID_DG_TOUCHPAD:2035 suffix = "Touchpad";2036 break;2037 case HID_GD_SYSTEM_CONTROL:2038 suffix = "System Control";2039 break;2040 case HID_CP_CONSUMER_CONTROL:2041 suffix = "Consumer Control";2042 break;2043 case HID_GD_WIRELESS_RADIO_CTLS:2044 suffix = "Wireless Radio Control";2045 break;2046 case HID_GD_SYSTEM_MULTIAXIS:2047 suffix = "System Multi Axis";2048 break;2049 default:2050 break;2051 }2052 }2053 2054 if (suffix) {2055 name_len = strlen(hid->name);2056 suffix_len = strlen(suffix);2057 if ((name_len < suffix_len) ||2058 strcmp(hid->name + name_len - suffix_len, suffix)) {2059 hidinput->name = kasprintf(GFP_KERNEL, "%s %s",2060 hid->name, suffix);2061 if (!hidinput->name)2062 goto fail;2063 }2064 }2065 2066 input_set_drvdata(input_dev, hid);2067 input_dev->event = hidinput_input_event;2068 input_dev->open = hidinput_open;2069 input_dev->close = hidinput_close;2070 input_dev->setkeycode = hidinput_setkeycode;2071 input_dev->getkeycode = hidinput_getkeycode;2072 2073 input_dev->name = hidinput->name ? hidinput->name : hid->name;2074 input_dev->phys = hid->phys;2075 input_dev->uniq = hid->uniq;2076 input_dev->id.bustype = hid->bus;2077 input_dev->id.vendor = hid->vendor;2078 input_dev->id.product = hid->product;2079 input_dev->id.version = hid->version;2080 input_dev->dev.parent = &hid->dev;2081 2082 hidinput->input = input_dev;2083 hidinput->application = application;2084 list_add_tail(&hidinput->list, &hid->inputs);2085 2086 INIT_LIST_HEAD(&hidinput->reports);2087 2088 return hidinput;2089 2090fail:2091 kfree(hidinput);2092 input_free_device(input_dev);2093 hid_err(hid, "Out of memory during hid input probe\n");2094 return NULL;2095}2096 2097static bool hidinput_has_been_populated(struct hid_input *hidinput)2098{2099 int i;2100 unsigned long r = 0;2101 2102 for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++)2103 r |= hidinput->input->evbit[i];2104 2105 for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++)2106 r |= hidinput->input->keybit[i];2107 2108 for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++)2109 r |= hidinput->input->relbit[i];2110 2111 for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++)2112 r |= hidinput->input->absbit[i];2113 2114 for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++)2115 r |= hidinput->input->mscbit[i];2116 2117 for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++)2118 r |= hidinput->input->ledbit[i];2119 2120 for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++)2121 r |= hidinput->input->sndbit[i];2122 2123 for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++)2124 r |= hidinput->input->ffbit[i];2125 2126 for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++)2127 r |= hidinput->input->swbit[i];2128 2129 return !!r;2130}2131 2132static void hidinput_cleanup_hidinput(struct hid_device *hid,2133 struct hid_input *hidinput)2134{2135 struct hid_report *report;2136 int i, k;2137 2138 list_del(&hidinput->list);2139 input_free_device(hidinput->input);2140 kfree(hidinput->name);2141 2142 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {2143 if (k == HID_OUTPUT_REPORT &&2144 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)2145 continue;2146 2147 list_for_each_entry(report, &hid->report_enum[k].report_list,2148 list) {2149 2150 for (i = 0; i < report->maxfield; i++)2151 if (report->field[i]->hidinput == hidinput)2152 report->field[i]->hidinput = NULL;2153 }2154 }2155 2156 kfree(hidinput);2157}2158 2159static struct hid_input *hidinput_match(struct hid_report *report)2160{2161 struct hid_device *hid = report->device;2162 struct hid_input *hidinput;2163 2164 list_for_each_entry(hidinput, &hid->inputs, list) {2165 if (hidinput->report &&2166 hidinput->report->id == report->id)2167 return hidinput;2168 }2169 2170 return NULL;2171}2172 2173static struct hid_input *hidinput_match_application(struct hid_report *report)2174{2175 struct hid_device *hid = report->device;2176 struct hid_input *hidinput;2177 2178 list_for_each_entry(hidinput, &hid->inputs, list) {2179 if (hidinput->application == report->application)2180 return hidinput;2181 2182 /*2183 * Keep SystemControl and ConsumerControl applications together2184 * with the main keyboard, if present.2185 */2186 if ((report->application == HID_GD_SYSTEM_CONTROL ||2187 report->application == HID_CP_CONSUMER_CONTROL) &&2188 hidinput->application == HID_GD_KEYBOARD) {2189 return hidinput;2190 }2191 }2192 2193 return NULL;2194}2195 2196static inline void hidinput_configure_usages(struct hid_input *hidinput,2197 struct hid_report *report)2198{2199 int i, j, k;2200 int first_field_index = 0;2201 int slot_collection_index = -1;2202 int prev_collection_index = -1;2203 unsigned int slot_idx = 0;2204 struct hid_field *field;2205 2206 /*2207 * First tag all the fields that are part of a slot,2208 * a slot needs to have one Contact ID in the collection2209 */2210 for (i = 0; i < report->maxfield; i++) {2211 field = report->field[i];2212 2213 /* ignore fields without usage */2214 if (field->maxusage < 1)2215 continue;2216 2217 /*2218 * janitoring when collection_index changes2219 */2220 if (prev_collection_index != field->usage->collection_index) {2221 prev_collection_index = field->usage->collection_index;2222 first_field_index = i;2223 }2224 2225 /*2226 * if we already found a Contact ID in the collection,2227 * tag and continue to the next.2228 */2229 if (slot_collection_index == field->usage->collection_index) {2230 field->slot_idx = slot_idx;2231 continue;2232 }2233 2234 /* check if the current field has Contact ID */2235 for (j = 0; j < field->maxusage; j++) {2236 if (field->usage[j].hid == HID_DG_CONTACTID) {2237 slot_collection_index = field->usage->collection_index;2238 slot_idx++;2239 2240 /*2241 * mark all previous fields and this one in the2242 * current collection to be slotted.2243 */2244 for (k = first_field_index; k <= i; k++)2245 report->field[k]->slot_idx = slot_idx;2246 break;2247 }2248 }2249 }2250 2251 for (i = 0; i < report->maxfield; i++)2252 for (j = 0; j < report->field[i]->maxusage; j++)2253 hidinput_configure_usage(hidinput, report->field[i],2254 report->field[i]->usage + j,2255 j);2256}2257 2258/*2259 * Register the input device; print a message.2260 * Configure the input layer interface2261 * Read all reports and initialize the absolute field values.2262 */2263 2264int hidinput_connect(struct hid_device *hid, unsigned int force)2265{2266 struct hid_driver *drv = hid->driver;2267 struct hid_report *report;2268 struct hid_input *next, *hidinput = NULL;2269 unsigned int application;2270 int i, k;2271 2272 INIT_LIST_HEAD(&hid->inputs);2273 INIT_WORK(&hid->led_work, hidinput_led_worker);2274 2275 hid->status &= ~HID_STAT_DUP_DETECTED;2276 2277 if (!force) {2278 for (i = 0; i < hid->maxcollection; i++) {2279 struct hid_collection *col = &hid->collection[i];2280 if (col->type == HID_COLLECTION_APPLICATION ||2281 col->type == HID_COLLECTION_PHYSICAL)2282 if (IS_INPUT_APPLICATION(col->usage))2283 break;2284 }2285 2286 if (i == hid->maxcollection)2287 return -1;2288 }2289 2290 report_features(hid);2291 2292 for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) {2293 if (k == HID_OUTPUT_REPORT &&2294 hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS)2295 continue;2296 2297 list_for_each_entry(report, &hid->report_enum[k].report_list, list) {2298 2299 if (!report->maxfield)2300 continue;2301 2302 application = report->application;2303 2304 /*2305 * Find the previous hidinput report attached2306 * to this report id.2307 */2308 if (hid->quirks & HID_QUIRK_MULTI_INPUT)2309 hidinput = hidinput_match(report);2310 else if (hid->maxapplication > 1 &&2311 (hid->quirks & HID_QUIRK_INPUT_PER_APP))2312 hidinput = hidinput_match_application(report);2313 2314 if (!hidinput) {2315 hidinput = hidinput_allocate(hid, application);2316 if (!hidinput)2317 goto out_unwind;2318 }2319 2320 hidinput_configure_usages(hidinput, report);2321 2322 if (hid->quirks & HID_QUIRK_MULTI_INPUT)2323 hidinput->report = report;2324 2325 list_add_tail(&report->hidinput_list,2326 &hidinput->reports);2327 }2328 }2329 2330 hidinput_change_resolution_multipliers(hid);2331 2332 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {2333 if (drv->input_configured &&2334 drv->input_configured(hid, hidinput))2335 goto out_unwind;2336 2337 if (!hidinput_has_been_populated(hidinput)) {2338 /* no need to register an input device not populated */2339 hidinput_cleanup_hidinput(hid, hidinput);2340 continue;2341 }2342 2343 if (input_register_device(hidinput->input))2344 goto out_unwind;2345 hidinput->registered = true;2346 }2347 2348 if (list_empty(&hid->inputs)) {2349 hid_err(hid, "No inputs registered, leaving\n");2350 goto out_unwind;2351 }2352 2353 if (hid->status & HID_STAT_DUP_DETECTED)2354 hid_dbg(hid,2355 "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n");2356 2357 return 0;2358 2359out_unwind:2360 /* unwind the ones we already registered */2361 hidinput_disconnect(hid);2362 2363 return -1;2364}2365EXPORT_SYMBOL_GPL(hidinput_connect);2366 2367void hidinput_disconnect(struct hid_device *hid)2368{2369 struct hid_input *hidinput, *next;2370 2371 hidinput_cleanup_battery(hid);2372 2373 list_for_each_entry_safe(hidinput, next, &hid->inputs, list) {2374 list_del(&hidinput->list);2375 if (hidinput->registered)2376 input_unregister_device(hidinput->input);2377 else2378 input_free_device(hidinput->input);2379 kfree(hidinput->name);2380 kfree(hidinput);2381 }2382 2383 /* led_work is spawned by input_dev callbacks, but doesn't access the2384 * parent input_dev at all. Once all input devices are removed, we2385 * know that led_work will never get restarted, so we can cancel it2386 * synchronously and are safe. */2387 cancel_work_sync(&hid->led_work);2388}2389EXPORT_SYMBOL_GPL(hidinput_disconnect);2390 2391#ifdef CONFIG_HID_KUNIT_TEST2392#include "hid-input-test.c"2393#endif2394