Andrew Scull | b4b6d4a | 2019-01-02 15:54:55 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright (c) 2000-2001 Vojtech Pavlik |
| 3 | * Copyright (c) 2006-2010 Jiri Kosina |
| 4 | * |
| 5 | * HID to Linux Input mapping |
| 6 | */ |
| 7 | |
| 8 | /* |
| 9 | * This program is free software; you can redistribute it and/or modify |
| 10 | * it under the terms of the GNU General Public License as published by |
| 11 | * the Free Software Foundation; either version 2 of the License, or |
| 12 | * (at your option) any later version. |
| 13 | * |
| 14 | * This program is distributed in the hope that it will be useful, |
| 15 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 16 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 17 | * GNU General Public License for more details. |
| 18 | * |
| 19 | * You should have received a copy of the GNU General Public License |
| 20 | * along with this program; if not, write to the Free Software |
| 21 | * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA |
| 22 | * |
| 23 | * Should you need to contact me, the author, you can do so either by |
| 24 | * e-mail - mail your message to <vojtech@ucw.cz>, or by paper mail: |
| 25 | * Vojtech Pavlik, Simunkova 1594, Prague 8, 182 00 Czech Republic |
| 26 | */ |
| 27 | |
| 28 | #include <linux/module.h> |
| 29 | #include <linux/slab.h> |
| 30 | #include <linux/kernel.h> |
| 31 | |
| 32 | #include <linux/hid.h> |
| 33 | #include <linux/hid-debug.h> |
| 34 | |
| 35 | #include "hid-ids.h" |
| 36 | |
| 37 | #define unk KEY_UNKNOWN |
| 38 | |
| 39 | static const unsigned char hid_keyboard[256] = { |
| 40 | 0, 0, 0, 0, 30, 48, 46, 32, 18, 33, 34, 35, 23, 36, 37, 38, |
| 41 | 50, 49, 24, 25, 16, 19, 31, 20, 22, 47, 17, 45, 21, 44, 2, 3, |
| 42 | 4, 5, 6, 7, 8, 9, 10, 11, 28, 1, 14, 15, 57, 12, 13, 26, |
| 43 | 27, 43, 43, 39, 40, 41, 51, 52, 53, 58, 59, 60, 61, 62, 63, 64, |
| 44 | 65, 66, 67, 68, 87, 88, 99, 70,119,110,102,104,111,107,109,106, |
| 45 | 105,108,103, 69, 98, 55, 74, 78, 96, 79, 80, 81, 75, 76, 77, 71, |
| 46 | 72, 73, 82, 83, 86,127,116,117,183,184,185,186,187,188,189,190, |
| 47 | 191,192,193,194,134,138,130,132,128,129,131,137,133,135,136,113, |
| 48 | 115,114,unk,unk,unk,121,unk, 89, 93,124, 92, 94, 95,unk,unk,unk, |
| 49 | 122,123, 90, 91, 85,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk, |
| 50 | unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, |
| 51 | unk,unk,unk,unk,unk,unk,179,180,unk,unk,unk,unk,unk,unk,unk,unk, |
| 52 | unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk,unk, |
| 53 | unk,unk,unk,unk,unk,unk,unk,unk,111,unk,unk,unk,unk,unk,unk,unk, |
| 54 | 29, 42, 56,125, 97, 54,100,126,164,166,165,163,161,115,114,113, |
| 55 | 150,158,159,128,136,177,178,176,142,152,173,140,unk,unk,unk,unk |
| 56 | }; |
| 57 | |
| 58 | static const struct { |
| 59 | __s32 x; |
| 60 | __s32 y; |
| 61 | } hid_hat_to_axis[] = {{ 0, 0}, { 0,-1}, { 1,-1}, { 1, 0}, { 1, 1}, { 0, 1}, {-1, 1}, {-1, 0}, {-1,-1}}; |
| 62 | |
| 63 | #define map_abs(c) hid_map_usage(hidinput, usage, &bit, &max, EV_ABS, (c)) |
| 64 | #define map_rel(c) hid_map_usage(hidinput, usage, &bit, &max, EV_REL, (c)) |
| 65 | #define map_key(c) hid_map_usage(hidinput, usage, &bit, &max, EV_KEY, (c)) |
| 66 | #define map_led(c) hid_map_usage(hidinput, usage, &bit, &max, EV_LED, (c)) |
| 67 | |
| 68 | #define map_abs_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \ |
| 69 | &max, EV_ABS, (c)) |
| 70 | #define map_key_clear(c) hid_map_usage_clear(hidinput, usage, &bit, \ |
| 71 | &max, EV_KEY, (c)) |
| 72 | |
| 73 | static bool match_scancode(struct hid_usage *usage, |
| 74 | unsigned int cur_idx, unsigned int scancode) |
| 75 | { |
| 76 | return (usage->hid & (HID_USAGE_PAGE | HID_USAGE)) == scancode; |
| 77 | } |
| 78 | |
| 79 | static bool match_keycode(struct hid_usage *usage, |
| 80 | unsigned int cur_idx, unsigned int keycode) |
| 81 | { |
| 82 | /* |
| 83 | * We should exclude unmapped usages when doing lookup by keycode. |
| 84 | */ |
| 85 | return (usage->type == EV_KEY && usage->code == keycode); |
| 86 | } |
| 87 | |
| 88 | static bool match_index(struct hid_usage *usage, |
| 89 | unsigned int cur_idx, unsigned int idx) |
| 90 | { |
| 91 | return cur_idx == idx; |
| 92 | } |
| 93 | |
| 94 | typedef bool (*hid_usage_cmp_t)(struct hid_usage *usage, |
| 95 | unsigned int cur_idx, unsigned int val); |
| 96 | |
| 97 | static struct hid_usage *hidinput_find_key(struct hid_device *hid, |
| 98 | hid_usage_cmp_t match, |
| 99 | unsigned int value, |
| 100 | unsigned int *usage_idx) |
| 101 | { |
| 102 | unsigned int i, j, k, cur_idx = 0; |
| 103 | struct hid_report *report; |
| 104 | struct hid_usage *usage; |
| 105 | |
| 106 | for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { |
| 107 | list_for_each_entry(report, &hid->report_enum[k].report_list, list) { |
| 108 | for (i = 0; i < report->maxfield; i++) { |
| 109 | for (j = 0; j < report->field[i]->maxusage; j++) { |
| 110 | usage = report->field[i]->usage + j; |
| 111 | if (usage->type == EV_KEY || usage->type == 0) { |
| 112 | if (match(usage, cur_idx, value)) { |
| 113 | if (usage_idx) |
| 114 | *usage_idx = cur_idx; |
| 115 | return usage; |
| 116 | } |
| 117 | cur_idx++; |
| 118 | } |
| 119 | } |
| 120 | } |
| 121 | } |
| 122 | } |
| 123 | return NULL; |
| 124 | } |
| 125 | |
| 126 | static struct hid_usage *hidinput_locate_usage(struct hid_device *hid, |
| 127 | const struct input_keymap_entry *ke, |
| 128 | unsigned int *index) |
| 129 | { |
| 130 | struct hid_usage *usage; |
| 131 | unsigned int scancode; |
| 132 | |
| 133 | if (ke->flags & INPUT_KEYMAP_BY_INDEX) |
| 134 | usage = hidinput_find_key(hid, match_index, ke->index, index); |
| 135 | else if (input_scancode_to_scalar(ke, &scancode) == 0) |
| 136 | usage = hidinput_find_key(hid, match_scancode, scancode, index); |
| 137 | else |
| 138 | usage = NULL; |
| 139 | |
| 140 | return usage; |
| 141 | } |
| 142 | |
| 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; |
| 149 | |
| 150 | usage = hidinput_locate_usage(hid, ke, &index); |
| 151 | if (usage) { |
| 152 | ke->keycode = usage->type == EV_KEY ? |
| 153 | usage->code : KEY_RESERVED; |
| 154 | ke->index = index; |
| 155 | scancode = usage->hid & (HID_USAGE_PAGE | HID_USAGE); |
| 156 | ke->len = sizeof(scancode); |
| 157 | memcpy(ke->scancode, &scancode, sizeof(scancode)); |
| 158 | return 0; |
| 159 | } |
| 160 | |
| 161 | return -EINVAL; |
| 162 | } |
| 163 | |
| 164 | static int hidinput_setkeycode(struct input_dev *dev, |
| 165 | const struct input_keymap_entry *ke, |
| 166 | unsigned int *old_keycode) |
| 167 | { |
| 168 | struct hid_device *hid = input_get_drvdata(dev); |
| 169 | struct hid_usage *usage; |
| 170 | |
| 171 | usage = hidinput_locate_usage(hid, ke, NULL); |
| 172 | if (usage) { |
| 173 | *old_keycode = usage->type == EV_KEY ? |
| 174 | usage->code : KEY_RESERVED; |
| 175 | usage->code = ke->keycode; |
| 176 | |
| 177 | clear_bit(*old_keycode, dev->keybit); |
| 178 | set_bit(usage->code, dev->keybit); |
| 179 | dbg_hid("Assigned keycode %d to HID usage code %x\n", |
| 180 | usage->code, usage->hid); |
| 181 | |
| 182 | /* |
| 183 | * Set the keybit for the old keycode if the old keycode is used |
| 184 | * by another key |
| 185 | */ |
| 186 | if (hidinput_find_key(hid, match_keycode, *old_keycode, NULL)) |
| 187 | set_bit(*old_keycode, dev->keybit); |
| 188 | |
| 189 | return 0; |
| 190 | } |
| 191 | |
| 192 | return -EINVAL; |
| 193 | } |
| 194 | |
| 195 | |
| 196 | /** |
| 197 | * hidinput_calc_abs_res - calculate an absolute axis resolution |
| 198 | * @field: the HID report field to calculate resolution for |
| 199 | * @code: axis code |
| 200 | * |
| 201 | * The formula is: |
| 202 | * (logical_maximum - logical_minimum) |
| 203 | * resolution = ---------------------------------------------------------- |
| 204 | * (physical_maximum - physical_minimum) * 10 ^ unit_exponent |
| 205 | * |
| 206 | * as seen in the HID specification v1.11 6.2.2.7 Global Items. |
| 207 | * |
| 208 | * Only exponent 1 length units are processed. Centimeters and inches are |
| 209 | * converted to millimeters. Degrees are converted to radians. |
| 210 | */ |
| 211 | __s32 hidinput_calc_abs_res(const struct hid_field *field, __u16 code) |
| 212 | { |
| 213 | __s32 unit_exponent = field->unit_exponent; |
| 214 | __s32 logical_extents = field->logical_maximum - |
| 215 | field->logical_minimum; |
| 216 | __s32 physical_extents = field->physical_maximum - |
| 217 | field->physical_minimum; |
| 218 | __s32 prev; |
| 219 | |
| 220 | /* Check if the extents are sane */ |
| 221 | if (logical_extents <= 0 || physical_extents <= 0) |
| 222 | return 0; |
| 223 | |
| 224 | /* |
| 225 | * Verify and convert units. |
| 226 | * See HID specification v1.11 6.2.2.7 Global Items for unit decoding |
| 227 | */ |
| 228 | switch (code) { |
| 229 | case ABS_X: |
| 230 | case ABS_Y: |
| 231 | case ABS_Z: |
| 232 | case ABS_MT_POSITION_X: |
| 233 | case ABS_MT_POSITION_Y: |
| 234 | case ABS_MT_TOOL_X: |
| 235 | case ABS_MT_TOOL_Y: |
| 236 | case ABS_MT_TOUCH_MAJOR: |
| 237 | case ABS_MT_TOUCH_MINOR: |
| 238 | if (field->unit == 0x11) { /* If centimeters */ |
| 239 | /* Convert to millimeters */ |
| 240 | unit_exponent += 1; |
| 241 | } else if (field->unit == 0x13) { /* If inches */ |
| 242 | /* Convert to millimeters */ |
| 243 | prev = physical_extents; |
| 244 | physical_extents *= 254; |
| 245 | if (physical_extents < prev) |
| 246 | return 0; |
| 247 | unit_exponent -= 1; |
| 248 | } else { |
| 249 | return 0; |
| 250 | } |
| 251 | break; |
| 252 | |
| 253 | case ABS_RX: |
| 254 | case ABS_RY: |
| 255 | case ABS_RZ: |
| 256 | case ABS_WHEEL: |
| 257 | case ABS_TILT_X: |
| 258 | case ABS_TILT_Y: |
| 259 | if (field->unit == 0x14) { /* If degrees */ |
| 260 | /* Convert to radians */ |
| 261 | prev = logical_extents; |
| 262 | logical_extents *= 573; |
| 263 | if (logical_extents < prev) |
| 264 | return 0; |
| 265 | unit_exponent += 1; |
| 266 | } else if (field->unit != 0x12) { /* If not radians */ |
| 267 | return 0; |
| 268 | } |
| 269 | break; |
| 270 | |
| 271 | default: |
| 272 | return 0; |
| 273 | } |
| 274 | |
| 275 | /* Apply negative unit exponent */ |
| 276 | for (; unit_exponent < 0; unit_exponent++) { |
| 277 | prev = logical_extents; |
| 278 | logical_extents *= 10; |
| 279 | if (logical_extents < prev) |
| 280 | return 0; |
| 281 | } |
| 282 | /* Apply positive unit exponent */ |
| 283 | for (; unit_exponent > 0; unit_exponent--) { |
| 284 | prev = physical_extents; |
| 285 | physical_extents *= 10; |
| 286 | if (physical_extents < prev) |
| 287 | return 0; |
| 288 | } |
| 289 | |
| 290 | /* Calculate resolution */ |
| 291 | return DIV_ROUND_CLOSEST(logical_extents, physical_extents); |
| 292 | } |
| 293 | EXPORT_SYMBOL_GPL(hidinput_calc_abs_res); |
| 294 | |
| 295 | #ifdef CONFIG_HID_BATTERY_STRENGTH |
| 296 | static enum power_supply_property hidinput_battery_props[] = { |
| 297 | POWER_SUPPLY_PROP_PRESENT, |
| 298 | POWER_SUPPLY_PROP_ONLINE, |
| 299 | POWER_SUPPLY_PROP_CAPACITY, |
| 300 | POWER_SUPPLY_PROP_MODEL_NAME, |
| 301 | POWER_SUPPLY_PROP_STATUS, |
| 302 | 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 | USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ISO), |
| 312 | HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, |
| 313 | { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, |
| 314 | USB_DEVICE_ID_APPLE_ALU_WIRELESS_2009_ANSI), |
| 315 | 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 | { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, |
| 320 | USB_DEVICE_ID_APPLE_ALU_WIRELESS_2011_ISO), |
| 321 | HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, |
| 322 | { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_APPLE, |
| 323 | USB_DEVICE_ID_APPLE_ALU_WIRELESS_ANSI), |
| 324 | HID_BATTERY_QUIRK_PERCENT | HID_BATTERY_QUIRK_FEATURE }, |
| 325 | { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_ELECOM, |
| 326 | USB_DEVICE_ID_ELECOM_BM084), |
| 327 | HID_BATTERY_QUIRK_IGNORE }, |
| 328 | { HID_USB_DEVICE(USB_VENDOR_ID_SYMBOL, |
| 329 | USB_DEVICE_ID_SYMBOL_SCANNER_3), |
| 330 | HID_BATTERY_QUIRK_IGNORE }, |
| 331 | {} |
| 332 | }; |
| 333 | |
| 334 | static unsigned find_battery_quirk(struct hid_device *hdev) |
| 335 | { |
| 336 | unsigned quirks = 0; |
| 337 | const struct hid_device_id *match; |
| 338 | |
| 339 | match = hid_match_id(hdev, hid_battery_quirks); |
| 340 | if (match != NULL) |
| 341 | quirks = match->driver_data; |
| 342 | |
| 343 | return quirks; |
| 344 | } |
| 345 | |
| 346 | static int hidinput_scale_battery_capacity(struct hid_device *dev, |
| 347 | int value) |
| 348 | { |
| 349 | if (dev->battery_min < dev->battery_max && |
| 350 | value >= dev->battery_min && value <= dev->battery_max) |
| 351 | value = ((value - dev->battery_min) * 100) / |
| 352 | (dev->battery_max - dev->battery_min); |
| 353 | |
| 354 | return value; |
| 355 | } |
| 356 | |
| 357 | static int hidinput_query_battery_capacity(struct hid_device *dev) |
| 358 | { |
| 359 | u8 *buf; |
| 360 | int ret; |
| 361 | |
| 362 | buf = kmalloc(2, GFP_KERNEL); |
| 363 | if (!buf) |
| 364 | return -ENOMEM; |
| 365 | |
| 366 | ret = hid_hw_raw_request(dev, dev->battery_report_id, buf, 2, |
| 367 | dev->battery_report_type, HID_REQ_GET_REPORT); |
| 368 | if (ret != 2) { |
| 369 | kfree(buf); |
| 370 | return -ENODATA; |
| 371 | } |
| 372 | |
| 373 | ret = hidinput_scale_battery_capacity(dev, buf[1]); |
| 374 | kfree(buf); |
| 375 | return ret; |
| 376 | } |
| 377 | |
| 378 | static int hidinput_get_battery_property(struct power_supply *psy, |
| 379 | enum power_supply_property prop, |
| 380 | union power_supply_propval *val) |
| 381 | { |
| 382 | struct hid_device *dev = power_supply_get_drvdata(psy); |
| 383 | int value; |
| 384 | int ret = 0; |
| 385 | |
| 386 | switch (prop) { |
| 387 | case POWER_SUPPLY_PROP_PRESENT: |
| 388 | case POWER_SUPPLY_PROP_ONLINE: |
| 389 | val->intval = 1; |
| 390 | break; |
| 391 | |
| 392 | case POWER_SUPPLY_PROP_CAPACITY: |
| 393 | if (dev->battery_status != HID_BATTERY_REPORTED && |
| 394 | !dev->battery_avoid_query) { |
| 395 | value = hidinput_query_battery_capacity(dev); |
| 396 | if (value < 0) |
| 397 | return value; |
| 398 | } else { |
| 399 | value = dev->battery_capacity; |
| 400 | } |
| 401 | |
| 402 | val->intval = value; |
| 403 | break; |
| 404 | |
| 405 | case POWER_SUPPLY_PROP_MODEL_NAME: |
| 406 | val->strval = dev->name; |
| 407 | break; |
| 408 | |
| 409 | case POWER_SUPPLY_PROP_STATUS: |
| 410 | if (dev->battery_status != HID_BATTERY_REPORTED && |
| 411 | !dev->battery_avoid_query) { |
| 412 | value = hidinput_query_battery_capacity(dev); |
| 413 | if (value < 0) |
| 414 | return value; |
| 415 | |
| 416 | dev->battery_capacity = value; |
| 417 | dev->battery_status = HID_BATTERY_QUERIED; |
| 418 | } |
| 419 | |
| 420 | if (dev->battery_status == HID_BATTERY_UNKNOWN) |
| 421 | val->intval = POWER_SUPPLY_STATUS_UNKNOWN; |
| 422 | else if (dev->battery_capacity == 100) |
| 423 | val->intval = POWER_SUPPLY_STATUS_FULL; |
| 424 | else |
| 425 | val->intval = POWER_SUPPLY_STATUS_DISCHARGING; |
| 426 | break; |
| 427 | |
| 428 | case POWER_SUPPLY_PROP_SCOPE: |
| 429 | val->intval = POWER_SUPPLY_SCOPE_DEVICE; |
| 430 | break; |
| 431 | |
| 432 | default: |
| 433 | ret = -EINVAL; |
| 434 | break; |
| 435 | } |
| 436 | |
| 437 | return ret; |
| 438 | } |
| 439 | |
| 440 | static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, struct hid_field *field) |
| 441 | { |
| 442 | struct power_supply_desc *psy_desc; |
| 443 | struct power_supply_config psy_cfg = { .drv_data = dev, }; |
| 444 | unsigned quirks; |
| 445 | s32 min, max; |
| 446 | int error; |
| 447 | |
| 448 | if (dev->battery) |
| 449 | return 0; /* already initialized? */ |
| 450 | |
| 451 | quirks = find_battery_quirk(dev); |
| 452 | |
| 453 | hid_dbg(dev, "device %x:%x:%x %d quirks %d\n", |
| 454 | dev->bus, dev->vendor, dev->product, dev->version, quirks); |
| 455 | |
| 456 | if (quirks & HID_BATTERY_QUIRK_IGNORE) |
| 457 | return 0; |
| 458 | |
| 459 | psy_desc = kzalloc(sizeof(*psy_desc), GFP_KERNEL); |
| 460 | if (!psy_desc) |
| 461 | return -ENOMEM; |
| 462 | |
| 463 | psy_desc->name = kasprintf(GFP_KERNEL, "hid-%s-battery", |
| 464 | strlen(dev->uniq) ? |
| 465 | dev->uniq : dev_name(&dev->dev)); |
| 466 | if (!psy_desc->name) { |
| 467 | error = -ENOMEM; |
| 468 | goto err_free_mem; |
| 469 | } |
| 470 | |
| 471 | psy_desc->type = POWER_SUPPLY_TYPE_BATTERY; |
| 472 | psy_desc->properties = hidinput_battery_props; |
| 473 | psy_desc->num_properties = ARRAY_SIZE(hidinput_battery_props); |
| 474 | psy_desc->use_for_apm = 0; |
| 475 | psy_desc->get_property = hidinput_get_battery_property; |
| 476 | |
| 477 | min = field->logical_minimum; |
| 478 | max = field->logical_maximum; |
| 479 | |
| 480 | if (quirks & HID_BATTERY_QUIRK_PERCENT) { |
| 481 | min = 0; |
| 482 | max = 100; |
| 483 | } |
| 484 | |
| 485 | if (quirks & HID_BATTERY_QUIRK_FEATURE) |
| 486 | report_type = HID_FEATURE_REPORT; |
| 487 | |
| 488 | dev->battery_min = min; |
| 489 | dev->battery_max = max; |
| 490 | dev->battery_report_type = report_type; |
| 491 | dev->battery_report_id = field->report->id; |
| 492 | |
| 493 | /* |
| 494 | * Stylus is normally not connected to the device and thus we |
| 495 | * can't query the device and get meaningful battery strength. |
| 496 | * We have to wait for the device to report it on its own. |
| 497 | */ |
| 498 | dev->battery_avoid_query = report_type == HID_INPUT_REPORT && |
| 499 | field->physical == HID_DG_STYLUS; |
| 500 | |
| 501 | dev->battery = power_supply_register(&dev->dev, psy_desc, &psy_cfg); |
| 502 | if (IS_ERR(dev->battery)) { |
| 503 | error = PTR_ERR(dev->battery); |
| 504 | hid_warn(dev, "can't register power supply: %d\n", error); |
| 505 | goto err_free_name; |
| 506 | } |
| 507 | |
| 508 | power_supply_powers(dev->battery, &dev->dev); |
| 509 | return 0; |
| 510 | |
| 511 | err_free_name: |
| 512 | kfree(psy_desc->name); |
| 513 | err_free_mem: |
| 514 | kfree(psy_desc); |
| 515 | dev->battery = NULL; |
| 516 | return error; |
| 517 | } |
| 518 | |
| 519 | static void hidinput_cleanup_battery(struct hid_device *dev) |
| 520 | { |
| 521 | const struct power_supply_desc *psy_desc; |
| 522 | |
| 523 | if (!dev->battery) |
| 524 | return; |
| 525 | |
| 526 | psy_desc = dev->battery->desc; |
| 527 | power_supply_unregister(dev->battery); |
| 528 | kfree(psy_desc->name); |
| 529 | kfree(psy_desc); |
| 530 | dev->battery = NULL; |
| 531 | } |
| 532 | |
| 533 | static void hidinput_update_battery(struct hid_device *dev, int value) |
| 534 | { |
| 535 | int capacity; |
| 536 | |
| 537 | if (!dev->battery) |
| 538 | return; |
| 539 | |
| 540 | if (value == 0 || value < dev->battery_min || value > dev->battery_max) |
| 541 | return; |
| 542 | |
| 543 | capacity = hidinput_scale_battery_capacity(dev, value); |
| 544 | |
| 545 | if (dev->battery_status != HID_BATTERY_REPORTED || |
| 546 | capacity != dev->battery_capacity) { |
| 547 | dev->battery_capacity = capacity; |
| 548 | dev->battery_status = HID_BATTERY_REPORTED; |
| 549 | power_supply_changed(dev->battery); |
| 550 | } |
| 551 | } |
| 552 | #else /* !CONFIG_HID_BATTERY_STRENGTH */ |
| 553 | static int hidinput_setup_battery(struct hid_device *dev, unsigned report_type, |
| 554 | struct hid_field *field) |
| 555 | { |
| 556 | return 0; |
| 557 | } |
| 558 | |
| 559 | static void hidinput_cleanup_battery(struct hid_device *dev) |
| 560 | { |
| 561 | } |
| 562 | |
| 563 | static void hidinput_update_battery(struct hid_device *dev, int value) |
| 564 | { |
| 565 | } |
| 566 | #endif /* CONFIG_HID_BATTERY_STRENGTH */ |
| 567 | |
| 568 | static void hidinput_configure_usage(struct hid_input *hidinput, struct hid_field *field, |
| 569 | struct hid_usage *usage) |
| 570 | { |
| 571 | struct input_dev *input = hidinput->input; |
| 572 | struct hid_device *device = input_get_drvdata(input); |
| 573 | int max = 0, code; |
| 574 | unsigned long *bit = NULL; |
| 575 | |
| 576 | field->hidinput = hidinput; |
| 577 | |
| 578 | if (field->flags & HID_MAIN_ITEM_CONSTANT) |
| 579 | goto ignore; |
| 580 | |
| 581 | /* Ignore if report count is out of bounds. */ |
| 582 | if (field->report_count < 1) |
| 583 | goto ignore; |
| 584 | |
| 585 | /* only LED usages are supported in output fields */ |
| 586 | if (field->report_type == HID_OUTPUT_REPORT && |
| 587 | (usage->hid & HID_USAGE_PAGE) != HID_UP_LED) { |
| 588 | goto ignore; |
| 589 | } |
| 590 | |
| 591 | if (device->driver->input_mapping) { |
| 592 | int ret = device->driver->input_mapping(device, hidinput, field, |
| 593 | usage, &bit, &max); |
| 594 | if (ret > 0) |
| 595 | goto mapped; |
| 596 | if (ret < 0) |
| 597 | goto ignore; |
| 598 | } |
| 599 | |
| 600 | switch (usage->hid & HID_USAGE_PAGE) { |
| 601 | case HID_UP_UNDEFINED: |
| 602 | goto ignore; |
| 603 | |
| 604 | case HID_UP_KEYBOARD: |
| 605 | set_bit(EV_REP, input->evbit); |
| 606 | |
| 607 | if ((usage->hid & HID_USAGE) < 256) { |
| 608 | if (!hid_keyboard[usage->hid & HID_USAGE]) goto ignore; |
| 609 | map_key_clear(hid_keyboard[usage->hid & HID_USAGE]); |
| 610 | } else |
| 611 | map_key(KEY_UNKNOWN); |
| 612 | |
| 613 | break; |
| 614 | |
| 615 | case HID_UP_BUTTON: |
| 616 | code = ((usage->hid - 1) & HID_USAGE); |
| 617 | |
| 618 | switch (field->application) { |
| 619 | case HID_GD_MOUSE: |
| 620 | case HID_GD_POINTER: code += BTN_MOUSE; break; |
| 621 | case HID_GD_JOYSTICK: |
| 622 | if (code <= 0xf) |
| 623 | code += BTN_JOYSTICK; |
| 624 | else |
| 625 | code += BTN_TRIGGER_HAPPY - 0x10; |
| 626 | break; |
| 627 | case HID_GD_GAMEPAD: |
| 628 | if (code <= 0xf) |
| 629 | code += BTN_GAMEPAD; |
| 630 | else |
| 631 | code += BTN_TRIGGER_HAPPY - 0x10; |
| 632 | break; |
| 633 | default: |
| 634 | switch (field->physical) { |
| 635 | case HID_GD_MOUSE: |
| 636 | case HID_GD_POINTER: code += BTN_MOUSE; break; |
| 637 | case HID_GD_JOYSTICK: code += BTN_JOYSTICK; break; |
| 638 | case HID_GD_GAMEPAD: code += BTN_GAMEPAD; break; |
| 639 | default: code += BTN_MISC; |
| 640 | } |
| 641 | } |
| 642 | |
| 643 | map_key(code); |
| 644 | break; |
| 645 | |
| 646 | case HID_UP_SIMULATION: |
| 647 | switch (usage->hid & 0xffff) { |
| 648 | case 0xba: map_abs(ABS_RUDDER); break; |
| 649 | case 0xbb: map_abs(ABS_THROTTLE); break; |
| 650 | case 0xc4: map_abs(ABS_GAS); break; |
| 651 | case 0xc5: map_abs(ABS_BRAKE); break; |
| 652 | case 0xc8: map_abs(ABS_WHEEL); break; |
| 653 | default: goto ignore; |
| 654 | } |
| 655 | break; |
| 656 | |
| 657 | case HID_UP_GENDESK: |
| 658 | if ((usage->hid & 0xf0) == 0x80) { /* SystemControl */ |
| 659 | switch (usage->hid & 0xf) { |
| 660 | case 0x1: map_key_clear(KEY_POWER); break; |
| 661 | case 0x2: map_key_clear(KEY_SLEEP); break; |
| 662 | case 0x3: map_key_clear(KEY_WAKEUP); break; |
| 663 | case 0x4: map_key_clear(KEY_CONTEXT_MENU); break; |
| 664 | case 0x5: map_key_clear(KEY_MENU); break; |
| 665 | case 0x6: map_key_clear(KEY_PROG1); break; |
| 666 | case 0x7: map_key_clear(KEY_HELP); break; |
| 667 | case 0x8: map_key_clear(KEY_EXIT); break; |
| 668 | case 0x9: map_key_clear(KEY_SELECT); break; |
| 669 | case 0xa: map_key_clear(KEY_RIGHT); break; |
| 670 | case 0xb: map_key_clear(KEY_LEFT); break; |
| 671 | case 0xc: map_key_clear(KEY_UP); break; |
| 672 | case 0xd: map_key_clear(KEY_DOWN); break; |
| 673 | case 0xe: map_key_clear(KEY_POWER2); break; |
| 674 | case 0xf: map_key_clear(KEY_RESTART); break; |
| 675 | default: goto unknown; |
| 676 | } |
| 677 | break; |
| 678 | } |
| 679 | |
| 680 | /* |
| 681 | * Some lazy vendors declare 255 usages for System Control, |
| 682 | * leading to the creation of ABS_X|Y axis and too many others. |
| 683 | * It wouldn't be a problem if joydev doesn't consider the |
| 684 | * device as a joystick then. |
| 685 | */ |
| 686 | if (field->application == HID_GD_SYSTEM_CONTROL) |
| 687 | goto ignore; |
| 688 | |
| 689 | if ((usage->hid & 0xf0) == 0x90) { /* D-pad */ |
| 690 | switch (usage->hid) { |
| 691 | case HID_GD_UP: usage->hat_dir = 1; break; |
| 692 | case HID_GD_DOWN: usage->hat_dir = 5; break; |
| 693 | case HID_GD_RIGHT: usage->hat_dir = 3; break; |
| 694 | case HID_GD_LEFT: usage->hat_dir = 7; break; |
| 695 | default: goto unknown; |
| 696 | } |
| 697 | if (field->dpad) { |
| 698 | map_abs(field->dpad); |
| 699 | goto ignore; |
| 700 | } |
| 701 | map_abs(ABS_HAT0X); |
| 702 | break; |
| 703 | } |
| 704 | |
| 705 | switch (usage->hid) { |
| 706 | /* These usage IDs map directly to the usage codes. */ |
| 707 | case HID_GD_X: case HID_GD_Y: case HID_GD_Z: |
| 708 | case HID_GD_RX: case HID_GD_RY: case HID_GD_RZ: |
| 709 | if (field->flags & HID_MAIN_ITEM_RELATIVE) |
| 710 | map_rel(usage->hid & 0xf); |
| 711 | else |
| 712 | map_abs_clear(usage->hid & 0xf); |
| 713 | break; |
| 714 | |
| 715 | case HID_GD_SLIDER: case HID_GD_DIAL: case HID_GD_WHEEL: |
| 716 | if (field->flags & HID_MAIN_ITEM_RELATIVE) |
| 717 | map_rel(usage->hid & 0xf); |
| 718 | else |
| 719 | map_abs(usage->hid & 0xf); |
| 720 | break; |
| 721 | |
| 722 | case HID_GD_HATSWITCH: |
| 723 | usage->hat_min = field->logical_minimum; |
| 724 | usage->hat_max = field->logical_maximum; |
| 725 | map_abs(ABS_HAT0X); |
| 726 | break; |
| 727 | |
| 728 | case HID_GD_START: map_key_clear(BTN_START); break; |
| 729 | case HID_GD_SELECT: map_key_clear(BTN_SELECT); break; |
| 730 | |
| 731 | case HID_GD_RFKILL_BTN: |
| 732 | /* MS wireless radio ctl extension, also check CA */ |
| 733 | if (field->application == HID_GD_WIRELESS_RADIO_CTLS) { |
| 734 | map_key_clear(KEY_RFKILL); |
| 735 | /* We need to simulate the btn release */ |
| 736 | field->flags |= HID_MAIN_ITEM_RELATIVE; |
| 737 | break; |
| 738 | } |
| 739 | |
| 740 | default: goto unknown; |
| 741 | } |
| 742 | |
| 743 | break; |
| 744 | |
| 745 | case HID_UP_LED: |
| 746 | switch (usage->hid & 0xffff) { /* HID-Value: */ |
| 747 | case 0x01: map_led (LED_NUML); break; /* "Num Lock" */ |
| 748 | case 0x02: map_led (LED_CAPSL); break; /* "Caps Lock" */ |
| 749 | case 0x03: map_led (LED_SCROLLL); break; /* "Scroll Lock" */ |
| 750 | case 0x04: map_led (LED_COMPOSE); break; /* "Compose" */ |
| 751 | case 0x05: map_led (LED_KANA); break; /* "Kana" */ |
| 752 | case 0x27: map_led (LED_SLEEP); break; /* "Stand-By" */ |
| 753 | case 0x4c: map_led (LED_SUSPEND); break; /* "System Suspend" */ |
| 754 | case 0x09: map_led (LED_MUTE); break; /* "Mute" */ |
| 755 | case 0x4b: map_led (LED_MISC); break; /* "Generic Indicator" */ |
| 756 | case 0x19: map_led (LED_MAIL); break; /* "Message Waiting" */ |
| 757 | case 0x4d: map_led (LED_CHARGING); break; /* "External Power Connected" */ |
| 758 | |
| 759 | default: goto ignore; |
| 760 | } |
| 761 | break; |
| 762 | |
| 763 | case HID_UP_DIGITIZER: |
| 764 | switch (usage->hid & 0xff) { |
| 765 | case 0x00: /* Undefined */ |
| 766 | goto ignore; |
| 767 | |
| 768 | case 0x30: /* TipPressure */ |
| 769 | if (!test_bit(BTN_TOUCH, input->keybit)) { |
| 770 | device->quirks |= HID_QUIRK_NOTOUCH; |
| 771 | set_bit(EV_KEY, input->evbit); |
| 772 | set_bit(BTN_TOUCH, input->keybit); |
| 773 | } |
| 774 | map_abs_clear(ABS_PRESSURE); |
| 775 | break; |
| 776 | |
| 777 | case 0x32: /* InRange */ |
| 778 | switch (field->physical & 0xff) { |
| 779 | case 0x21: map_key(BTN_TOOL_MOUSE); break; |
| 780 | case 0x22: map_key(BTN_TOOL_FINGER); break; |
| 781 | default: map_key(BTN_TOOL_PEN); break; |
| 782 | } |
| 783 | break; |
| 784 | |
| 785 | case 0x3b: /* Battery Strength */ |
| 786 | hidinput_setup_battery(device, HID_INPUT_REPORT, field); |
| 787 | usage->type = EV_PWR; |
| 788 | goto ignore; |
| 789 | |
| 790 | case 0x3c: /* Invert */ |
| 791 | map_key_clear(BTN_TOOL_RUBBER); |
| 792 | break; |
| 793 | |
| 794 | case 0x3d: /* X Tilt */ |
| 795 | map_abs_clear(ABS_TILT_X); |
| 796 | break; |
| 797 | |
| 798 | case 0x3e: /* Y Tilt */ |
| 799 | map_abs_clear(ABS_TILT_Y); |
| 800 | break; |
| 801 | |
| 802 | case 0x33: /* Touch */ |
| 803 | case 0x42: /* TipSwitch */ |
| 804 | case 0x43: /* TipSwitch2 */ |
| 805 | device->quirks &= ~HID_QUIRK_NOTOUCH; |
| 806 | map_key_clear(BTN_TOUCH); |
| 807 | break; |
| 808 | |
| 809 | case 0x44: /* BarrelSwitch */ |
| 810 | map_key_clear(BTN_STYLUS); |
| 811 | break; |
| 812 | |
| 813 | case 0x45: /* ERASER */ |
| 814 | /* |
| 815 | * This event is reported when eraser tip touches the surface. |
| 816 | * Actual eraser (BTN_TOOL_RUBBER) is set by Invert usage when |
| 817 | * tool gets in proximity. |
| 818 | */ |
| 819 | map_key_clear(BTN_TOUCH); |
| 820 | break; |
| 821 | |
| 822 | case 0x46: /* TabletPick */ |
| 823 | case 0x5a: /* SecondaryBarrelSwitch */ |
| 824 | map_key_clear(BTN_STYLUS2); |
| 825 | break; |
| 826 | |
| 827 | case 0x5b: /* TransducerSerialNumber */ |
| 828 | usage->type = EV_MSC; |
| 829 | usage->code = MSC_SERIAL; |
| 830 | bit = input->mscbit; |
| 831 | max = MSC_MAX; |
| 832 | break; |
| 833 | |
| 834 | default: goto unknown; |
| 835 | } |
| 836 | break; |
| 837 | |
| 838 | case HID_UP_TELEPHONY: |
| 839 | switch (usage->hid & HID_USAGE) { |
| 840 | case 0x2f: map_key_clear(KEY_MICMUTE); break; |
| 841 | case 0xb0: map_key_clear(KEY_NUMERIC_0); break; |
| 842 | case 0xb1: map_key_clear(KEY_NUMERIC_1); break; |
| 843 | case 0xb2: map_key_clear(KEY_NUMERIC_2); break; |
| 844 | case 0xb3: map_key_clear(KEY_NUMERIC_3); break; |
| 845 | case 0xb4: map_key_clear(KEY_NUMERIC_4); break; |
| 846 | case 0xb5: map_key_clear(KEY_NUMERIC_5); break; |
| 847 | case 0xb6: map_key_clear(KEY_NUMERIC_6); break; |
| 848 | case 0xb7: map_key_clear(KEY_NUMERIC_7); break; |
| 849 | case 0xb8: map_key_clear(KEY_NUMERIC_8); break; |
| 850 | case 0xb9: map_key_clear(KEY_NUMERIC_9); break; |
| 851 | case 0xba: map_key_clear(KEY_NUMERIC_STAR); break; |
| 852 | case 0xbb: map_key_clear(KEY_NUMERIC_POUND); break; |
| 853 | case 0xbc: map_key_clear(KEY_NUMERIC_A); break; |
| 854 | case 0xbd: map_key_clear(KEY_NUMERIC_B); break; |
| 855 | case 0xbe: map_key_clear(KEY_NUMERIC_C); break; |
| 856 | case 0xbf: map_key_clear(KEY_NUMERIC_D); break; |
| 857 | default: goto ignore; |
| 858 | } |
| 859 | break; |
| 860 | |
| 861 | case HID_UP_CONSUMER: /* USB HUT v1.12, pages 75-84 */ |
| 862 | switch (usage->hid & HID_USAGE) { |
| 863 | case 0x000: goto ignore; |
| 864 | case 0x030: map_key_clear(KEY_POWER); break; |
| 865 | case 0x031: map_key_clear(KEY_RESTART); break; |
| 866 | case 0x032: map_key_clear(KEY_SLEEP); break; |
| 867 | case 0x034: map_key_clear(KEY_SLEEP); break; |
| 868 | case 0x035: map_key_clear(KEY_KBDILLUMTOGGLE); break; |
| 869 | case 0x036: map_key_clear(BTN_MISC); break; |
| 870 | |
| 871 | case 0x040: map_key_clear(KEY_MENU); break; /* Menu */ |
| 872 | case 0x041: map_key_clear(KEY_SELECT); break; /* Menu Pick */ |
| 873 | case 0x042: map_key_clear(KEY_UP); break; /* Menu Up */ |
| 874 | case 0x043: map_key_clear(KEY_DOWN); break; /* Menu Down */ |
| 875 | case 0x044: map_key_clear(KEY_LEFT); break; /* Menu Left */ |
| 876 | case 0x045: map_key_clear(KEY_RIGHT); break; /* Menu Right */ |
| 877 | case 0x046: map_key_clear(KEY_ESC); break; /* Menu Escape */ |
| 878 | case 0x047: map_key_clear(KEY_KPPLUS); break; /* Menu Value Increase */ |
| 879 | case 0x048: map_key_clear(KEY_KPMINUS); break; /* Menu Value Decrease */ |
| 880 | |
| 881 | case 0x060: map_key_clear(KEY_INFO); break; /* Data On Screen */ |
| 882 | case 0x061: map_key_clear(KEY_SUBTITLE); break; /* Closed Caption */ |
| 883 | case 0x063: map_key_clear(KEY_VCR); break; /* VCR/TV */ |
| 884 | case 0x065: map_key_clear(KEY_CAMERA); break; /* Snapshot */ |
| 885 | case 0x069: map_key_clear(KEY_RED); break; |
| 886 | case 0x06a: map_key_clear(KEY_GREEN); break; |
| 887 | case 0x06b: map_key_clear(KEY_BLUE); break; |
| 888 | case 0x06c: map_key_clear(KEY_YELLOW); break; |
| 889 | case 0x06d: map_key_clear(KEY_ZOOM); break; |
| 890 | |
| 891 | case 0x06f: map_key_clear(KEY_BRIGHTNESSUP); break; |
| 892 | case 0x070: map_key_clear(KEY_BRIGHTNESSDOWN); break; |
| 893 | case 0x072: map_key_clear(KEY_BRIGHTNESS_TOGGLE); break; |
| 894 | case 0x073: map_key_clear(KEY_BRIGHTNESS_MIN); break; |
| 895 | case 0x074: map_key_clear(KEY_BRIGHTNESS_MAX); break; |
| 896 | case 0x075: map_key_clear(KEY_BRIGHTNESS_AUTO); break; |
| 897 | |
| 898 | case 0x082: map_key_clear(KEY_VIDEO_NEXT); break; |
| 899 | case 0x083: map_key_clear(KEY_LAST); break; |
| 900 | case 0x084: map_key_clear(KEY_ENTER); break; |
| 901 | case 0x088: map_key_clear(KEY_PC); break; |
| 902 | case 0x089: map_key_clear(KEY_TV); break; |
| 903 | case 0x08a: map_key_clear(KEY_WWW); break; |
| 904 | case 0x08b: map_key_clear(KEY_DVD); break; |
| 905 | case 0x08c: map_key_clear(KEY_PHONE); break; |
| 906 | case 0x08d: map_key_clear(KEY_PROGRAM); break; |
| 907 | case 0x08e: map_key_clear(KEY_VIDEOPHONE); break; |
| 908 | case 0x08f: map_key_clear(KEY_GAMES); break; |
| 909 | case 0x090: map_key_clear(KEY_MEMO); break; |
| 910 | case 0x091: map_key_clear(KEY_CD); break; |
| 911 | case 0x092: map_key_clear(KEY_VCR); break; |
| 912 | case 0x093: map_key_clear(KEY_TUNER); break; |
| 913 | case 0x094: map_key_clear(KEY_EXIT); break; |
| 914 | case 0x095: map_key_clear(KEY_HELP); break; |
| 915 | case 0x096: map_key_clear(KEY_TAPE); break; |
| 916 | case 0x097: map_key_clear(KEY_TV2); break; |
| 917 | case 0x098: map_key_clear(KEY_SAT); break; |
| 918 | case 0x09a: map_key_clear(KEY_PVR); break; |
| 919 | |
| 920 | case 0x09c: map_key_clear(KEY_CHANNELUP); break; |
| 921 | case 0x09d: map_key_clear(KEY_CHANNELDOWN); break; |
| 922 | case 0x0a0: map_key_clear(KEY_VCR2); break; |
| 923 | |
| 924 | case 0x0b0: map_key_clear(KEY_PLAY); break; |
| 925 | case 0x0b1: map_key_clear(KEY_PAUSE); break; |
| 926 | case 0x0b2: map_key_clear(KEY_RECORD); break; |
| 927 | case 0x0b3: map_key_clear(KEY_FASTFORWARD); break; |
| 928 | case 0x0b4: map_key_clear(KEY_REWIND); break; |
| 929 | case 0x0b5: map_key_clear(KEY_NEXTSONG); break; |
| 930 | case 0x0b6: map_key_clear(KEY_PREVIOUSSONG); break; |
| 931 | case 0x0b7: map_key_clear(KEY_STOPCD); break; |
| 932 | case 0x0b8: map_key_clear(KEY_EJECTCD); break; |
| 933 | case 0x0bc: map_key_clear(KEY_MEDIA_REPEAT); break; |
| 934 | case 0x0b9: map_key_clear(KEY_SHUFFLE); break; |
| 935 | case 0x0bf: map_key_clear(KEY_SLOW); break; |
| 936 | |
| 937 | case 0x0cd: map_key_clear(KEY_PLAYPAUSE); break; |
| 938 | case 0x0cf: map_key_clear(KEY_VOICECOMMAND); break; |
| 939 | case 0x0e0: map_abs_clear(ABS_VOLUME); break; |
| 940 | case 0x0e2: map_key_clear(KEY_MUTE); break; |
| 941 | case 0x0e5: map_key_clear(KEY_BASSBOOST); break; |
| 942 | case 0x0e9: map_key_clear(KEY_VOLUMEUP); break; |
| 943 | case 0x0ea: map_key_clear(KEY_VOLUMEDOWN); break; |
| 944 | case 0x0f5: map_key_clear(KEY_SLOW); break; |
| 945 | |
| 946 | case 0x181: map_key_clear(KEY_BUTTONCONFIG); break; |
| 947 | case 0x182: map_key_clear(KEY_BOOKMARKS); break; |
| 948 | case 0x183: map_key_clear(KEY_CONFIG); break; |
| 949 | case 0x184: map_key_clear(KEY_WORDPROCESSOR); break; |
| 950 | case 0x185: map_key_clear(KEY_EDITOR); break; |
| 951 | case 0x186: map_key_clear(KEY_SPREADSHEET); break; |
| 952 | case 0x187: map_key_clear(KEY_GRAPHICSEDITOR); break; |
| 953 | case 0x188: map_key_clear(KEY_PRESENTATION); break; |
| 954 | case 0x189: map_key_clear(KEY_DATABASE); break; |
| 955 | case 0x18a: map_key_clear(KEY_MAIL); break; |
| 956 | case 0x18b: map_key_clear(KEY_NEWS); break; |
| 957 | case 0x18c: map_key_clear(KEY_VOICEMAIL); break; |
| 958 | case 0x18d: map_key_clear(KEY_ADDRESSBOOK); break; |
| 959 | case 0x18e: map_key_clear(KEY_CALENDAR); break; |
| 960 | case 0x18f: map_key_clear(KEY_TASKMANAGER); break; |
| 961 | case 0x190: map_key_clear(KEY_JOURNAL); break; |
| 962 | case 0x191: map_key_clear(KEY_FINANCE); break; |
| 963 | case 0x192: map_key_clear(KEY_CALC); break; |
| 964 | case 0x193: map_key_clear(KEY_PLAYER); break; |
| 965 | case 0x194: map_key_clear(KEY_FILE); break; |
| 966 | case 0x196: map_key_clear(KEY_WWW); break; |
| 967 | case 0x199: map_key_clear(KEY_CHAT); break; |
| 968 | case 0x19c: map_key_clear(KEY_LOGOFF); break; |
| 969 | case 0x19e: map_key_clear(KEY_COFFEE); break; |
| 970 | case 0x19f: map_key_clear(KEY_CONTROLPANEL); break; |
| 971 | case 0x1a2: map_key_clear(KEY_APPSELECT); break; |
| 972 | case 0x1a3: map_key_clear(KEY_NEXT); break; |
| 973 | case 0x1a4: map_key_clear(KEY_PREVIOUS); break; |
| 974 | case 0x1a6: map_key_clear(KEY_HELP); break; |
| 975 | case 0x1a7: map_key_clear(KEY_DOCUMENTS); break; |
| 976 | case 0x1ab: map_key_clear(KEY_SPELLCHECK); break; |
| 977 | case 0x1ae: map_key_clear(KEY_KEYBOARD); break; |
| 978 | case 0x1b1: map_key_clear(KEY_SCREENSAVER); break; |
| 979 | case 0x1b4: map_key_clear(KEY_FILE); break; |
| 980 | case 0x1b6: map_key_clear(KEY_IMAGES); break; |
| 981 | case 0x1b7: map_key_clear(KEY_AUDIO); break; |
| 982 | case 0x1b8: map_key_clear(KEY_VIDEO); break; |
| 983 | case 0x1bc: map_key_clear(KEY_MESSENGER); break; |
| 984 | case 0x1bd: map_key_clear(KEY_INFO); break; |
| 985 | case 0x201: map_key_clear(KEY_NEW); break; |
| 986 | case 0x202: map_key_clear(KEY_OPEN); break; |
| 987 | case 0x203: map_key_clear(KEY_CLOSE); break; |
| 988 | case 0x204: map_key_clear(KEY_EXIT); break; |
| 989 | case 0x207: map_key_clear(KEY_SAVE); break; |
| 990 | case 0x208: map_key_clear(KEY_PRINT); break; |
| 991 | case 0x209: map_key_clear(KEY_PROPS); break; |
| 992 | case 0x21a: map_key_clear(KEY_UNDO); break; |
| 993 | case 0x21b: map_key_clear(KEY_COPY); break; |
| 994 | case 0x21c: map_key_clear(KEY_CUT); break; |
| 995 | case 0x21d: map_key_clear(KEY_PASTE); break; |
| 996 | case 0x21f: map_key_clear(KEY_FIND); break; |
| 997 | case 0x221: map_key_clear(KEY_SEARCH); break; |
| 998 | case 0x222: map_key_clear(KEY_GOTO); break; |
| 999 | case 0x223: map_key_clear(KEY_HOMEPAGE); break; |
| 1000 | case 0x224: map_key_clear(KEY_BACK); break; |
| 1001 | case 0x225: map_key_clear(KEY_FORWARD); break; |
| 1002 | case 0x226: map_key_clear(KEY_STOP); break; |
| 1003 | case 0x227: map_key_clear(KEY_REFRESH); break; |
| 1004 | case 0x22a: map_key_clear(KEY_BOOKMARKS); break; |
| 1005 | case 0x22d: map_key_clear(KEY_ZOOMIN); break; |
| 1006 | case 0x22e: map_key_clear(KEY_ZOOMOUT); break; |
| 1007 | case 0x22f: map_key_clear(KEY_ZOOMRESET); break; |
| 1008 | case 0x233: map_key_clear(KEY_SCROLLUP); break; |
| 1009 | case 0x234: map_key_clear(KEY_SCROLLDOWN); break; |
| 1010 | case 0x238: map_rel(REL_HWHEEL); break; |
| 1011 | case 0x23d: map_key_clear(KEY_EDIT); break; |
| 1012 | case 0x25f: map_key_clear(KEY_CANCEL); break; |
| 1013 | case 0x269: map_key_clear(KEY_INSERT); break; |
| 1014 | case 0x26a: map_key_clear(KEY_DELETE); break; |
| 1015 | case 0x279: map_key_clear(KEY_REDO); break; |
| 1016 | |
| 1017 | case 0x289: map_key_clear(KEY_REPLY); break; |
| 1018 | case 0x28b: map_key_clear(KEY_FORWARDMAIL); break; |
| 1019 | case 0x28c: map_key_clear(KEY_SEND); break; |
| 1020 | |
| 1021 | case 0x2c7: map_key_clear(KEY_KBDINPUTASSIST_PREV); break; |
| 1022 | case 0x2c8: map_key_clear(KEY_KBDINPUTASSIST_NEXT); break; |
| 1023 | case 0x2c9: map_key_clear(KEY_KBDINPUTASSIST_PREVGROUP); break; |
| 1024 | case 0x2ca: map_key_clear(KEY_KBDINPUTASSIST_NEXTGROUP); break; |
| 1025 | case 0x2cb: map_key_clear(KEY_KBDINPUTASSIST_ACCEPT); break; |
| 1026 | case 0x2cc: map_key_clear(KEY_KBDINPUTASSIST_CANCEL); break; |
| 1027 | |
| 1028 | default: map_key_clear(KEY_UNKNOWN); |
| 1029 | } |
| 1030 | break; |
| 1031 | |
| 1032 | case HID_UP_GENDEVCTRLS: |
| 1033 | switch (usage->hid) { |
| 1034 | case HID_DC_BATTERYSTRENGTH: |
| 1035 | hidinput_setup_battery(device, HID_INPUT_REPORT, field); |
| 1036 | usage->type = EV_PWR; |
| 1037 | goto ignore; |
| 1038 | } |
| 1039 | goto unknown; |
| 1040 | |
| 1041 | case HID_UP_HPVENDOR: /* Reported on a Dutch layout HP5308 */ |
| 1042 | set_bit(EV_REP, input->evbit); |
| 1043 | switch (usage->hid & HID_USAGE) { |
| 1044 | case 0x021: map_key_clear(KEY_PRINT); break; |
| 1045 | case 0x070: map_key_clear(KEY_HP); break; |
| 1046 | case 0x071: map_key_clear(KEY_CAMERA); break; |
| 1047 | case 0x072: map_key_clear(KEY_SOUND); break; |
| 1048 | case 0x073: map_key_clear(KEY_QUESTION); break; |
| 1049 | case 0x080: map_key_clear(KEY_EMAIL); break; |
| 1050 | case 0x081: map_key_clear(KEY_CHAT); break; |
| 1051 | case 0x082: map_key_clear(KEY_SEARCH); break; |
| 1052 | case 0x083: map_key_clear(KEY_CONNECT); break; |
| 1053 | case 0x084: map_key_clear(KEY_FINANCE); break; |
| 1054 | case 0x085: map_key_clear(KEY_SPORT); break; |
| 1055 | case 0x086: map_key_clear(KEY_SHOP); break; |
| 1056 | default: goto ignore; |
| 1057 | } |
| 1058 | break; |
| 1059 | |
| 1060 | case HID_UP_HPVENDOR2: |
| 1061 | set_bit(EV_REP, input->evbit); |
| 1062 | switch (usage->hid & HID_USAGE) { |
| 1063 | case 0x001: map_key_clear(KEY_MICMUTE); break; |
| 1064 | case 0x003: map_key_clear(KEY_BRIGHTNESSDOWN); break; |
| 1065 | case 0x004: map_key_clear(KEY_BRIGHTNESSUP); break; |
| 1066 | default: goto ignore; |
| 1067 | } |
| 1068 | break; |
| 1069 | |
| 1070 | case HID_UP_MSVENDOR: |
| 1071 | goto ignore; |
| 1072 | |
| 1073 | case HID_UP_CUSTOM: /* Reported on Logitech and Apple USB keyboards */ |
| 1074 | set_bit(EV_REP, input->evbit); |
| 1075 | goto ignore; |
| 1076 | |
| 1077 | case HID_UP_LOGIVENDOR: |
| 1078 | /* intentional fallback */ |
| 1079 | case HID_UP_LOGIVENDOR2: |
| 1080 | /* intentional fallback */ |
| 1081 | case HID_UP_LOGIVENDOR3: |
| 1082 | goto ignore; |
| 1083 | |
| 1084 | case HID_UP_PID: |
| 1085 | switch (usage->hid & HID_USAGE) { |
| 1086 | case 0xa4: map_key_clear(BTN_DEAD); break; |
| 1087 | default: goto ignore; |
| 1088 | } |
| 1089 | break; |
| 1090 | |
| 1091 | default: |
| 1092 | unknown: |
| 1093 | if (field->report_size == 1) { |
| 1094 | if (field->report->type == HID_OUTPUT_REPORT) { |
| 1095 | map_led(LED_MISC); |
| 1096 | break; |
| 1097 | } |
| 1098 | map_key(BTN_MISC); |
| 1099 | break; |
| 1100 | } |
| 1101 | if (field->flags & HID_MAIN_ITEM_RELATIVE) { |
| 1102 | map_rel(REL_MISC); |
| 1103 | break; |
| 1104 | } |
| 1105 | map_abs(ABS_MISC); |
| 1106 | break; |
| 1107 | } |
| 1108 | |
| 1109 | mapped: |
| 1110 | if (device->driver->input_mapped && device->driver->input_mapped(device, |
| 1111 | hidinput, field, usage, &bit, &max) < 0) |
| 1112 | goto ignore; |
| 1113 | |
| 1114 | set_bit(usage->type, input->evbit); |
| 1115 | |
| 1116 | /* |
| 1117 | * This part is *really* controversial: |
| 1118 | * - HID aims at being generic so we should do our best to export |
| 1119 | * all incoming events |
| 1120 | * - HID describes what events are, so there is no reason for ABS_X |
| 1121 | * to be mapped to ABS_Y |
| 1122 | * - HID is using *_MISC+N as a default value, but nothing prevents |
| 1123 | * *_MISC+N to overwrite a legitimate even, which confuses userspace |
| 1124 | * (for instance ABS_MISC + 7 is ABS_MT_SLOT, which has a different |
| 1125 | * processing) |
| 1126 | * |
| 1127 | * If devices still want to use this (at their own risk), they will |
| 1128 | * have to use the quirk HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE, but |
| 1129 | * the default should be a reliable mapping. |
| 1130 | */ |
| 1131 | while (usage->code <= max && test_and_set_bit(usage->code, bit)) { |
| 1132 | if (device->quirks & HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE) { |
| 1133 | usage->code = find_next_zero_bit(bit, |
| 1134 | max + 1, |
| 1135 | usage->code); |
| 1136 | } else { |
| 1137 | device->status |= HID_STAT_DUP_DETECTED; |
| 1138 | goto ignore; |
| 1139 | } |
| 1140 | } |
| 1141 | |
| 1142 | if (usage->code > max) |
| 1143 | goto ignore; |
| 1144 | |
| 1145 | if (usage->type == EV_ABS) { |
| 1146 | |
| 1147 | int a = field->logical_minimum; |
| 1148 | int b = field->logical_maximum; |
| 1149 | |
| 1150 | if ((device->quirks & HID_QUIRK_BADPAD) && (usage->code == ABS_X || usage->code == ABS_Y)) { |
| 1151 | a = field->logical_minimum = 0; |
| 1152 | b = field->logical_maximum = 255; |
| 1153 | } |
| 1154 | |
| 1155 | if (field->application == HID_GD_GAMEPAD || field->application == HID_GD_JOYSTICK) |
| 1156 | input_set_abs_params(input, usage->code, a, b, (b - a) >> 8, (b - a) >> 4); |
| 1157 | else input_set_abs_params(input, usage->code, a, b, 0, 0); |
| 1158 | |
| 1159 | input_abs_set_res(input, usage->code, |
| 1160 | hidinput_calc_abs_res(field, usage->code)); |
| 1161 | |
| 1162 | /* use a larger default input buffer for MT devices */ |
| 1163 | if (usage->code == ABS_MT_POSITION_X && input->hint_events_per_packet == 0) |
| 1164 | input_set_events_per_packet(input, 60); |
| 1165 | } |
| 1166 | |
| 1167 | if (usage->type == EV_ABS && |
| 1168 | (usage->hat_min < usage->hat_max || usage->hat_dir)) { |
| 1169 | int i; |
| 1170 | for (i = usage->code; i < usage->code + 2 && i <= max; i++) { |
| 1171 | input_set_abs_params(input, i, -1, 1, 0, 0); |
| 1172 | set_bit(i, input->absbit); |
| 1173 | } |
| 1174 | if (usage->hat_dir && !field->dpad) |
| 1175 | field->dpad = usage->code; |
| 1176 | } |
| 1177 | |
| 1178 | /* for those devices which produce Consumer volume usage as relative, |
| 1179 | * we emulate pressing volumeup/volumedown appropriate number of times |
| 1180 | * in hidinput_hid_event() |
| 1181 | */ |
| 1182 | if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && |
| 1183 | (usage->code == ABS_VOLUME)) { |
| 1184 | set_bit(KEY_VOLUMEUP, input->keybit); |
| 1185 | set_bit(KEY_VOLUMEDOWN, input->keybit); |
| 1186 | } |
| 1187 | |
| 1188 | if (usage->type == EV_KEY) { |
| 1189 | set_bit(EV_MSC, input->evbit); |
| 1190 | set_bit(MSC_SCAN, input->mscbit); |
| 1191 | } |
| 1192 | |
| 1193 | ignore: |
| 1194 | return; |
| 1195 | |
| 1196 | } |
| 1197 | |
| 1198 | void hidinput_hid_event(struct hid_device *hid, struct hid_field *field, struct hid_usage *usage, __s32 value) |
| 1199 | { |
| 1200 | struct input_dev *input; |
| 1201 | unsigned *quirks = &hid->quirks; |
| 1202 | |
| 1203 | if (!usage->type) |
| 1204 | return; |
| 1205 | |
| 1206 | if (usage->type == EV_PWR) { |
| 1207 | hidinput_update_battery(hid, value); |
| 1208 | return; |
| 1209 | } |
| 1210 | |
| 1211 | if (!field->hidinput) |
| 1212 | return; |
| 1213 | |
| 1214 | input = field->hidinput->input; |
| 1215 | |
| 1216 | if (usage->hat_min < usage->hat_max || usage->hat_dir) { |
| 1217 | int hat_dir = usage->hat_dir; |
| 1218 | if (!hat_dir) |
| 1219 | hat_dir = (value - usage->hat_min) * 8 / (usage->hat_max - usage->hat_min + 1) + 1; |
| 1220 | if (hat_dir < 0 || hat_dir > 8) hat_dir = 0; |
| 1221 | input_event(input, usage->type, usage->code , hid_hat_to_axis[hat_dir].x); |
| 1222 | input_event(input, usage->type, usage->code + 1, hid_hat_to_axis[hat_dir].y); |
| 1223 | return; |
| 1224 | } |
| 1225 | |
| 1226 | if (usage->hid == (HID_UP_DIGITIZER | 0x003c)) { /* Invert */ |
| 1227 | *quirks = value ? (*quirks | HID_QUIRK_INVERT) : (*quirks & ~HID_QUIRK_INVERT); |
| 1228 | return; |
| 1229 | } |
| 1230 | |
| 1231 | if (usage->hid == (HID_UP_DIGITIZER | 0x0032)) { /* InRange */ |
| 1232 | if (value) { |
| 1233 | input_event(input, usage->type, (*quirks & HID_QUIRK_INVERT) ? BTN_TOOL_RUBBER : usage->code, 1); |
| 1234 | return; |
| 1235 | } |
| 1236 | input_event(input, usage->type, usage->code, 0); |
| 1237 | input_event(input, usage->type, BTN_TOOL_RUBBER, 0); |
| 1238 | return; |
| 1239 | } |
| 1240 | |
| 1241 | if (usage->hid == (HID_UP_DIGITIZER | 0x0030) && (*quirks & HID_QUIRK_NOTOUCH)) { /* Pressure */ |
| 1242 | int a = field->logical_minimum; |
| 1243 | int b = field->logical_maximum; |
| 1244 | input_event(input, EV_KEY, BTN_TOUCH, value > a + ((b - a) >> 3)); |
| 1245 | } |
| 1246 | |
| 1247 | if (usage->hid == (HID_UP_PID | 0x83UL)) { /* Simultaneous Effects Max */ |
| 1248 | dbg_hid("Maximum Effects - %d\n",value); |
| 1249 | return; |
| 1250 | } |
| 1251 | |
| 1252 | if (usage->hid == (HID_UP_PID | 0x7fUL)) { |
| 1253 | dbg_hid("PID Pool Report\n"); |
| 1254 | return; |
| 1255 | } |
| 1256 | |
| 1257 | if ((usage->type == EV_KEY) && (usage->code == 0)) /* Key 0 is "unassigned", not KEY_UNKNOWN */ |
| 1258 | return; |
| 1259 | |
| 1260 | if ((usage->type == EV_ABS) && (field->flags & HID_MAIN_ITEM_RELATIVE) && |
| 1261 | (usage->code == ABS_VOLUME)) { |
| 1262 | int count = abs(value); |
| 1263 | int direction = value > 0 ? KEY_VOLUMEUP : KEY_VOLUMEDOWN; |
| 1264 | int i; |
| 1265 | |
| 1266 | for (i = 0; i < count; i++) { |
| 1267 | input_event(input, EV_KEY, direction, 1); |
| 1268 | input_sync(input); |
| 1269 | input_event(input, EV_KEY, direction, 0); |
| 1270 | input_sync(input); |
| 1271 | } |
| 1272 | return; |
| 1273 | } |
| 1274 | |
| 1275 | /* |
| 1276 | * Ignore out-of-range values as per HID specification, |
| 1277 | * section 5.10 and 6.2.25, when NULL state bit is present. |
| 1278 | * When it's not, clamp the value to match Microsoft's input |
| 1279 | * driver as mentioned in "Required HID usages for digitizers": |
| 1280 | * https://msdn.microsoft.com/en-us/library/windows/hardware/dn672278(v=vs.85).asp |
| 1281 | * |
| 1282 | * The logical_minimum < logical_maximum check is done so that we |
| 1283 | * don't unintentionally discard values sent by devices which |
| 1284 | * don't specify logical min and max. |
| 1285 | */ |
| 1286 | if ((field->flags & HID_MAIN_ITEM_VARIABLE) && |
| 1287 | (field->logical_minimum < field->logical_maximum)) { |
| 1288 | if (field->flags & HID_MAIN_ITEM_NULL_STATE && |
| 1289 | (value < field->logical_minimum || |
| 1290 | value > field->logical_maximum)) { |
| 1291 | dbg_hid("Ignoring out-of-range value %x\n", value); |
| 1292 | return; |
| 1293 | } |
| 1294 | value = clamp(value, |
| 1295 | field->logical_minimum, |
| 1296 | field->logical_maximum); |
| 1297 | } |
| 1298 | |
| 1299 | /* |
| 1300 | * Ignore reports for absolute data if the data didn't change. This is |
| 1301 | * not only an optimization but also fixes 'dead' key reports. Some |
| 1302 | * RollOver implementations for localized keys (like BACKSLASH/PIPE; HID |
| 1303 | * 0x31 and 0x32) report multiple keys, even though a localized keyboard |
| 1304 | * can only have one of them physically available. The 'dead' keys |
| 1305 | * report constant 0. As all map to the same keycode, they'd confuse |
| 1306 | * the input layer. If we filter the 'dead' keys on the HID level, we |
| 1307 | * skip the keycode translation and only forward real events. |
| 1308 | */ |
| 1309 | if (!(field->flags & (HID_MAIN_ITEM_RELATIVE | |
| 1310 | HID_MAIN_ITEM_BUFFERED_BYTE)) && |
| 1311 | (field->flags & HID_MAIN_ITEM_VARIABLE) && |
| 1312 | usage->usage_index < field->maxusage && |
| 1313 | value == field->value[usage->usage_index]) |
| 1314 | return; |
| 1315 | |
| 1316 | /* report the usage code as scancode if the key status has changed */ |
| 1317 | if (usage->type == EV_KEY && |
| 1318 | (!test_bit(usage->code, input->key)) == value) |
| 1319 | input_event(input, EV_MSC, MSC_SCAN, usage->hid); |
| 1320 | |
| 1321 | input_event(input, usage->type, usage->code, value); |
| 1322 | |
| 1323 | if ((field->flags & HID_MAIN_ITEM_RELATIVE) && |
| 1324 | usage->type == EV_KEY && value) { |
| 1325 | input_sync(input); |
| 1326 | input_event(input, usage->type, usage->code, 0); |
| 1327 | } |
| 1328 | } |
| 1329 | |
| 1330 | void hidinput_report_event(struct hid_device *hid, struct hid_report *report) |
| 1331 | { |
| 1332 | struct hid_input *hidinput; |
| 1333 | |
| 1334 | if (hid->quirks & HID_QUIRK_NO_INPUT_SYNC) |
| 1335 | return; |
| 1336 | |
| 1337 | list_for_each_entry(hidinput, &hid->inputs, list) |
| 1338 | input_sync(hidinput->input); |
| 1339 | } |
| 1340 | EXPORT_SYMBOL_GPL(hidinput_report_event); |
| 1341 | |
| 1342 | int hidinput_find_field(struct hid_device *hid, unsigned int type, unsigned int code, struct hid_field **field) |
| 1343 | { |
| 1344 | struct hid_report *report; |
| 1345 | int i, j; |
| 1346 | |
| 1347 | list_for_each_entry(report, &hid->report_enum[HID_OUTPUT_REPORT].report_list, list) { |
| 1348 | for (i = 0; i < report->maxfield; i++) { |
| 1349 | *field = report->field[i]; |
| 1350 | for (j = 0; j < (*field)->maxusage; j++) |
| 1351 | if ((*field)->usage[j].type == type && (*field)->usage[j].code == code) |
| 1352 | return j; |
| 1353 | } |
| 1354 | } |
| 1355 | return -1; |
| 1356 | } |
| 1357 | EXPORT_SYMBOL_GPL(hidinput_find_field); |
| 1358 | |
| 1359 | struct hid_field *hidinput_get_led_field(struct hid_device *hid) |
| 1360 | { |
| 1361 | struct hid_report *report; |
| 1362 | struct hid_field *field; |
| 1363 | int i, j; |
| 1364 | |
| 1365 | list_for_each_entry(report, |
| 1366 | &hid->report_enum[HID_OUTPUT_REPORT].report_list, |
| 1367 | list) { |
| 1368 | for (i = 0; i < report->maxfield; i++) { |
| 1369 | field = report->field[i]; |
| 1370 | for (j = 0; j < field->maxusage; j++) |
| 1371 | if (field->usage[j].type == EV_LED) |
| 1372 | return field; |
| 1373 | } |
| 1374 | } |
| 1375 | return NULL; |
| 1376 | } |
| 1377 | EXPORT_SYMBOL_GPL(hidinput_get_led_field); |
| 1378 | |
| 1379 | unsigned int hidinput_count_leds(struct hid_device *hid) |
| 1380 | { |
| 1381 | struct hid_report *report; |
| 1382 | struct hid_field *field; |
| 1383 | int i, j; |
| 1384 | unsigned int count = 0; |
| 1385 | |
| 1386 | list_for_each_entry(report, |
| 1387 | &hid->report_enum[HID_OUTPUT_REPORT].report_list, |
| 1388 | list) { |
| 1389 | for (i = 0; i < report->maxfield; i++) { |
| 1390 | field = report->field[i]; |
| 1391 | for (j = 0; j < field->maxusage; j++) |
| 1392 | if (field->usage[j].type == EV_LED && |
| 1393 | field->value[j]) |
| 1394 | count += 1; |
| 1395 | } |
| 1396 | } |
| 1397 | return count; |
| 1398 | } |
| 1399 | EXPORT_SYMBOL_GPL(hidinput_count_leds); |
| 1400 | |
| 1401 | static void hidinput_led_worker(struct work_struct *work) |
| 1402 | { |
| 1403 | struct hid_device *hid = container_of(work, struct hid_device, |
| 1404 | led_work); |
| 1405 | struct hid_field *field; |
| 1406 | struct hid_report *report; |
| 1407 | int ret; |
| 1408 | u32 len; |
| 1409 | __u8 *buf; |
| 1410 | |
| 1411 | field = hidinput_get_led_field(hid); |
| 1412 | if (!field) |
| 1413 | return; |
| 1414 | |
| 1415 | /* |
| 1416 | * field->report is accessed unlocked regarding HID core. So there might |
| 1417 | * be another incoming SET-LED request from user-space, which changes |
| 1418 | * the LED state while we assemble our outgoing buffer. However, this |
| 1419 | * doesn't matter as hid_output_report() correctly converts it into a |
| 1420 | * boolean value no matter what information is currently set on the LED |
| 1421 | * field (even garbage). So the remote device will always get a valid |
| 1422 | * request. |
| 1423 | * And in case we send a wrong value, a next led worker is spawned |
| 1424 | * for every SET-LED request so the following worker will send the |
| 1425 | * correct value, guaranteed! |
| 1426 | */ |
| 1427 | |
| 1428 | report = field->report; |
| 1429 | |
| 1430 | /* use custom SET_REPORT request if possible (asynchronous) */ |
| 1431 | if (hid->ll_driver->request) |
| 1432 | return hid->ll_driver->request(hid, report, HID_REQ_SET_REPORT); |
| 1433 | |
| 1434 | /* fall back to generic raw-output-report */ |
| 1435 | len = hid_report_len(report); |
| 1436 | buf = hid_alloc_report_buf(report, GFP_KERNEL); |
| 1437 | if (!buf) |
| 1438 | return; |
| 1439 | |
| 1440 | hid_output_report(report, buf); |
| 1441 | /* synchronous output report */ |
| 1442 | ret = hid_hw_output_report(hid, buf, len); |
| 1443 | if (ret == -ENOSYS) |
| 1444 | hid_hw_raw_request(hid, report->id, buf, len, HID_OUTPUT_REPORT, |
| 1445 | HID_REQ_SET_REPORT); |
| 1446 | kfree(buf); |
| 1447 | } |
| 1448 | |
| 1449 | static int hidinput_input_event(struct input_dev *dev, unsigned int type, |
| 1450 | unsigned int code, int value) |
| 1451 | { |
| 1452 | struct hid_device *hid = input_get_drvdata(dev); |
| 1453 | struct hid_field *field; |
| 1454 | int offset; |
| 1455 | |
| 1456 | if (type == EV_FF) |
| 1457 | return input_ff_event(dev, type, code, value); |
| 1458 | |
| 1459 | if (type != EV_LED) |
| 1460 | return -1; |
| 1461 | |
| 1462 | if ((offset = hidinput_find_field(hid, type, code, &field)) == -1) { |
| 1463 | hid_warn(dev, "event field not found\n"); |
| 1464 | return -1; |
| 1465 | } |
| 1466 | |
| 1467 | hid_set_field(field, offset, value); |
| 1468 | |
| 1469 | schedule_work(&hid->led_work); |
| 1470 | return 0; |
| 1471 | } |
| 1472 | |
| 1473 | static int hidinput_open(struct input_dev *dev) |
| 1474 | { |
| 1475 | struct hid_device *hid = input_get_drvdata(dev); |
| 1476 | |
| 1477 | return hid_hw_open(hid); |
| 1478 | } |
| 1479 | |
| 1480 | static void hidinput_close(struct input_dev *dev) |
| 1481 | { |
| 1482 | struct hid_device *hid = input_get_drvdata(dev); |
| 1483 | |
| 1484 | hid_hw_close(hid); |
| 1485 | } |
| 1486 | |
| 1487 | static void report_features(struct hid_device *hid) |
| 1488 | { |
| 1489 | struct hid_driver *drv = hid->driver; |
| 1490 | struct hid_report_enum *rep_enum; |
| 1491 | struct hid_report *rep; |
| 1492 | struct hid_usage *usage; |
| 1493 | int i, j; |
| 1494 | |
| 1495 | rep_enum = &hid->report_enum[HID_FEATURE_REPORT]; |
| 1496 | list_for_each_entry(rep, &rep_enum->report_list, list) |
| 1497 | for (i = 0; i < rep->maxfield; i++) { |
| 1498 | /* Ignore if report count is out of bounds. */ |
| 1499 | if (rep->field[i]->report_count < 1) |
| 1500 | continue; |
| 1501 | |
| 1502 | for (j = 0; j < rep->field[i]->maxusage; j++) { |
| 1503 | usage = &rep->field[i]->usage[j]; |
| 1504 | |
| 1505 | /* Verify if Battery Strength feature is available */ |
| 1506 | if (usage->hid == HID_DC_BATTERYSTRENGTH) |
| 1507 | hidinput_setup_battery(hid, HID_FEATURE_REPORT, |
| 1508 | rep->field[i]); |
| 1509 | |
| 1510 | if (drv->feature_mapping) |
| 1511 | drv->feature_mapping(hid, rep->field[i], usage); |
| 1512 | } |
| 1513 | } |
| 1514 | } |
| 1515 | |
| 1516 | static struct hid_input *hidinput_allocate(struct hid_device *hid, |
| 1517 | unsigned int application) |
| 1518 | { |
| 1519 | struct hid_input *hidinput = kzalloc(sizeof(*hidinput), GFP_KERNEL); |
| 1520 | struct input_dev *input_dev = input_allocate_device(); |
| 1521 | const char *suffix = NULL; |
| 1522 | |
| 1523 | if (!hidinput || !input_dev) |
| 1524 | goto fail; |
| 1525 | |
| 1526 | if ((hid->quirks & HID_QUIRK_INPUT_PER_APP) && |
| 1527 | hid->maxapplication > 1) { |
| 1528 | switch (application) { |
| 1529 | case HID_GD_KEYBOARD: |
| 1530 | suffix = "Keyboard"; |
| 1531 | break; |
| 1532 | case HID_GD_KEYPAD: |
| 1533 | suffix = "Keypad"; |
| 1534 | break; |
| 1535 | case HID_GD_MOUSE: |
| 1536 | suffix = "Mouse"; |
| 1537 | break; |
| 1538 | case HID_DG_STYLUS: |
| 1539 | suffix = "Pen"; |
| 1540 | break; |
| 1541 | case HID_DG_TOUCHSCREEN: |
| 1542 | suffix = "Touchscreen"; |
| 1543 | break; |
| 1544 | case HID_DG_TOUCHPAD: |
| 1545 | suffix = "Touchpad"; |
| 1546 | break; |
| 1547 | case HID_GD_SYSTEM_CONTROL: |
| 1548 | suffix = "System Control"; |
| 1549 | break; |
| 1550 | case HID_CP_CONSUMER_CONTROL: |
| 1551 | suffix = "Consumer Control"; |
| 1552 | break; |
| 1553 | case HID_GD_WIRELESS_RADIO_CTLS: |
| 1554 | suffix = "Wireless Radio Control"; |
| 1555 | break; |
| 1556 | case HID_GD_SYSTEM_MULTIAXIS: |
| 1557 | suffix = "System Multi Axis"; |
| 1558 | break; |
| 1559 | default: |
| 1560 | break; |
| 1561 | } |
| 1562 | } |
| 1563 | |
| 1564 | if (suffix) { |
| 1565 | hidinput->name = kasprintf(GFP_KERNEL, "%s %s", |
| 1566 | hid->name, suffix); |
| 1567 | if (!hidinput->name) |
| 1568 | goto fail; |
| 1569 | } |
| 1570 | |
| 1571 | input_set_drvdata(input_dev, hid); |
| 1572 | input_dev->event = hidinput_input_event; |
| 1573 | input_dev->open = hidinput_open; |
| 1574 | input_dev->close = hidinput_close; |
| 1575 | input_dev->setkeycode = hidinput_setkeycode; |
| 1576 | input_dev->getkeycode = hidinput_getkeycode; |
| 1577 | |
| 1578 | input_dev->name = hidinput->name ? hidinput->name : hid->name; |
| 1579 | input_dev->phys = hid->phys; |
| 1580 | input_dev->uniq = hid->uniq; |
| 1581 | input_dev->id.bustype = hid->bus; |
| 1582 | input_dev->id.vendor = hid->vendor; |
| 1583 | input_dev->id.product = hid->product; |
| 1584 | input_dev->id.version = hid->version; |
| 1585 | input_dev->dev.parent = &hid->dev; |
| 1586 | |
| 1587 | hidinput->input = input_dev; |
| 1588 | hidinput->application = application; |
| 1589 | list_add_tail(&hidinput->list, &hid->inputs); |
| 1590 | |
| 1591 | INIT_LIST_HEAD(&hidinput->reports); |
| 1592 | |
| 1593 | return hidinput; |
| 1594 | |
| 1595 | fail: |
| 1596 | kfree(hidinput); |
| 1597 | input_free_device(input_dev); |
| 1598 | hid_err(hid, "Out of memory during hid input probe\n"); |
| 1599 | return NULL; |
| 1600 | } |
| 1601 | |
| 1602 | static bool hidinput_has_been_populated(struct hid_input *hidinput) |
| 1603 | { |
| 1604 | int i; |
| 1605 | unsigned long r = 0; |
| 1606 | |
| 1607 | for (i = 0; i < BITS_TO_LONGS(EV_CNT); i++) |
| 1608 | r |= hidinput->input->evbit[i]; |
| 1609 | |
| 1610 | for (i = 0; i < BITS_TO_LONGS(KEY_CNT); i++) |
| 1611 | r |= hidinput->input->keybit[i]; |
| 1612 | |
| 1613 | for (i = 0; i < BITS_TO_LONGS(REL_CNT); i++) |
| 1614 | r |= hidinput->input->relbit[i]; |
| 1615 | |
| 1616 | for (i = 0; i < BITS_TO_LONGS(ABS_CNT); i++) |
| 1617 | r |= hidinput->input->absbit[i]; |
| 1618 | |
| 1619 | for (i = 0; i < BITS_TO_LONGS(MSC_CNT); i++) |
| 1620 | r |= hidinput->input->mscbit[i]; |
| 1621 | |
| 1622 | for (i = 0; i < BITS_TO_LONGS(LED_CNT); i++) |
| 1623 | r |= hidinput->input->ledbit[i]; |
| 1624 | |
| 1625 | for (i = 0; i < BITS_TO_LONGS(SND_CNT); i++) |
| 1626 | r |= hidinput->input->sndbit[i]; |
| 1627 | |
| 1628 | for (i = 0; i < BITS_TO_LONGS(FF_CNT); i++) |
| 1629 | r |= hidinput->input->ffbit[i]; |
| 1630 | |
| 1631 | for (i = 0; i < BITS_TO_LONGS(SW_CNT); i++) |
| 1632 | r |= hidinput->input->swbit[i]; |
| 1633 | |
| 1634 | return !!r; |
| 1635 | } |
| 1636 | |
| 1637 | static void hidinput_cleanup_hidinput(struct hid_device *hid, |
| 1638 | struct hid_input *hidinput) |
| 1639 | { |
| 1640 | struct hid_report *report; |
| 1641 | int i, k; |
| 1642 | |
| 1643 | list_del(&hidinput->list); |
| 1644 | input_free_device(hidinput->input); |
| 1645 | kfree(hidinput->name); |
| 1646 | |
| 1647 | for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { |
| 1648 | if (k == HID_OUTPUT_REPORT && |
| 1649 | hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) |
| 1650 | continue; |
| 1651 | |
| 1652 | list_for_each_entry(report, &hid->report_enum[k].report_list, |
| 1653 | list) { |
| 1654 | |
| 1655 | for (i = 0; i < report->maxfield; i++) |
| 1656 | if (report->field[i]->hidinput == hidinput) |
| 1657 | report->field[i]->hidinput = NULL; |
| 1658 | } |
| 1659 | } |
| 1660 | |
| 1661 | kfree(hidinput); |
| 1662 | } |
| 1663 | |
| 1664 | static struct hid_input *hidinput_match(struct hid_report *report) |
| 1665 | { |
| 1666 | struct hid_device *hid = report->device; |
| 1667 | struct hid_input *hidinput; |
| 1668 | |
| 1669 | list_for_each_entry(hidinput, &hid->inputs, list) { |
| 1670 | if (hidinput->report && |
| 1671 | hidinput->report->id == report->id) |
| 1672 | return hidinput; |
| 1673 | } |
| 1674 | |
| 1675 | return NULL; |
| 1676 | } |
| 1677 | |
| 1678 | static struct hid_input *hidinput_match_application(struct hid_report *report) |
| 1679 | { |
| 1680 | struct hid_device *hid = report->device; |
| 1681 | struct hid_input *hidinput; |
| 1682 | |
| 1683 | list_for_each_entry(hidinput, &hid->inputs, list) { |
| 1684 | if (hidinput->application == report->application) |
| 1685 | return hidinput; |
| 1686 | } |
| 1687 | |
| 1688 | return NULL; |
| 1689 | } |
| 1690 | |
| 1691 | static inline void hidinput_configure_usages(struct hid_input *hidinput, |
| 1692 | struct hid_report *report) |
| 1693 | { |
| 1694 | int i, j; |
| 1695 | |
| 1696 | for (i = 0; i < report->maxfield; i++) |
| 1697 | for (j = 0; j < report->field[i]->maxusage; j++) |
| 1698 | hidinput_configure_usage(hidinput, report->field[i], |
| 1699 | report->field[i]->usage + j); |
| 1700 | } |
| 1701 | |
| 1702 | /* |
| 1703 | * Register the input device; print a message. |
| 1704 | * Configure the input layer interface |
| 1705 | * Read all reports and initialize the absolute field values. |
| 1706 | */ |
| 1707 | |
| 1708 | int hidinput_connect(struct hid_device *hid, unsigned int force) |
| 1709 | { |
| 1710 | struct hid_driver *drv = hid->driver; |
| 1711 | struct hid_report *report; |
| 1712 | struct hid_input *next, *hidinput = NULL; |
| 1713 | unsigned int application; |
| 1714 | int i, k; |
| 1715 | |
| 1716 | INIT_LIST_HEAD(&hid->inputs); |
| 1717 | INIT_WORK(&hid->led_work, hidinput_led_worker); |
| 1718 | |
| 1719 | hid->status &= ~HID_STAT_DUP_DETECTED; |
| 1720 | |
| 1721 | if (!force) { |
| 1722 | for (i = 0; i < hid->maxcollection; i++) { |
| 1723 | struct hid_collection *col = &hid->collection[i]; |
| 1724 | if (col->type == HID_COLLECTION_APPLICATION || |
| 1725 | col->type == HID_COLLECTION_PHYSICAL) |
| 1726 | if (IS_INPUT_APPLICATION(col->usage)) |
| 1727 | break; |
| 1728 | } |
| 1729 | |
| 1730 | if (i == hid->maxcollection) |
| 1731 | return -1; |
| 1732 | } |
| 1733 | |
| 1734 | report_features(hid); |
| 1735 | |
| 1736 | for (k = HID_INPUT_REPORT; k <= HID_OUTPUT_REPORT; k++) { |
| 1737 | if (k == HID_OUTPUT_REPORT && |
| 1738 | hid->quirks & HID_QUIRK_SKIP_OUTPUT_REPORTS) |
| 1739 | continue; |
| 1740 | |
| 1741 | list_for_each_entry(report, &hid->report_enum[k].report_list, list) { |
| 1742 | |
| 1743 | if (!report->maxfield) |
| 1744 | continue; |
| 1745 | |
| 1746 | application = report->application; |
| 1747 | |
| 1748 | /* |
| 1749 | * Find the previous hidinput report attached |
| 1750 | * to this report id. |
| 1751 | */ |
| 1752 | if (hid->quirks & HID_QUIRK_MULTI_INPUT) |
| 1753 | hidinput = hidinput_match(report); |
| 1754 | else if (hid->maxapplication > 1 && |
| 1755 | (hid->quirks & HID_QUIRK_INPUT_PER_APP)) |
| 1756 | hidinput = hidinput_match_application(report); |
| 1757 | |
| 1758 | if (!hidinput) { |
| 1759 | hidinput = hidinput_allocate(hid, application); |
| 1760 | if (!hidinput) |
| 1761 | goto out_unwind; |
| 1762 | } |
| 1763 | |
| 1764 | hidinput_configure_usages(hidinput, report); |
| 1765 | |
| 1766 | if (hid->quirks & HID_QUIRK_MULTI_INPUT) |
| 1767 | hidinput->report = report; |
| 1768 | |
| 1769 | list_add_tail(&report->hidinput_list, |
| 1770 | &hidinput->reports); |
| 1771 | } |
| 1772 | } |
| 1773 | |
| 1774 | list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { |
| 1775 | if (drv->input_configured && |
| 1776 | drv->input_configured(hid, hidinput)) |
| 1777 | goto out_unwind; |
| 1778 | |
| 1779 | if (!hidinput_has_been_populated(hidinput)) { |
| 1780 | /* no need to register an input device not populated */ |
| 1781 | hidinput_cleanup_hidinput(hid, hidinput); |
| 1782 | continue; |
| 1783 | } |
| 1784 | |
| 1785 | if (input_register_device(hidinput->input)) |
| 1786 | goto out_unwind; |
| 1787 | hidinput->registered = true; |
| 1788 | } |
| 1789 | |
| 1790 | if (list_empty(&hid->inputs)) { |
| 1791 | hid_err(hid, "No inputs registered, leaving\n"); |
| 1792 | goto out_unwind; |
| 1793 | } |
| 1794 | |
| 1795 | if (hid->status & HID_STAT_DUP_DETECTED) |
| 1796 | hid_dbg(hid, |
| 1797 | "Some usages could not be mapped, please use HID_QUIRK_INCREMENT_USAGE_ON_DUPLICATE if this is legitimate.\n"); |
| 1798 | |
| 1799 | return 0; |
| 1800 | |
| 1801 | out_unwind: |
| 1802 | /* unwind the ones we already registered */ |
| 1803 | hidinput_disconnect(hid); |
| 1804 | |
| 1805 | return -1; |
| 1806 | } |
| 1807 | EXPORT_SYMBOL_GPL(hidinput_connect); |
| 1808 | |
| 1809 | void hidinput_disconnect(struct hid_device *hid) |
| 1810 | { |
| 1811 | struct hid_input *hidinput, *next; |
| 1812 | |
| 1813 | hidinput_cleanup_battery(hid); |
| 1814 | |
| 1815 | list_for_each_entry_safe(hidinput, next, &hid->inputs, list) { |
| 1816 | list_del(&hidinput->list); |
| 1817 | if (hidinput->registered) |
| 1818 | input_unregister_device(hidinput->input); |
| 1819 | else |
| 1820 | input_free_device(hidinput->input); |
| 1821 | kfree(hidinput->name); |
| 1822 | kfree(hidinput); |
| 1823 | } |
| 1824 | |
| 1825 | /* led_work is spawned by input_dev callbacks, but doesn't access the |
| 1826 | * parent input_dev at all. Once all input devices are removed, we |
| 1827 | * know that led_work will never get restarted, so we can cancel it |
| 1828 | * synchronously and are safe. */ |
| 1829 | cancel_work_sync(&hid->led_work); |
| 1830 | } |
| 1831 | EXPORT_SYMBOL_GPL(hidinput_disconnect); |
| 1832 | |