1 // SPDX-License-Identifier: GPL-2.0-or-later 2 /* 3 * HID driver for some microsoft "special" devices 4 * 5 * Copyright (c) 1999 Andreas Gal 6 * Copyright (c) 2000-2005 Vojtech Pavlik <vojtech@suse.cz> 7 * Copyright (c) 2005 Michael Haboustak <mike-@cinci.rr.com> for Concept2, Inc 8 * Copyright (c) 2006-2007 Jiri Kosina 9 * Copyright (c) 2008 Jiri Slaby 10 */ 11 12 /* 13 */ 14 15 #include <linux/device.h> 16 #include <linux/input.h> 17 #include <linux/hid.h> 18 #include <linux/module.h> 19 20 #include "hid-ids.h" 21 22 #define MS_HIDINPUT BIT(0) 23 #define MS_ERGONOMY BIT(1) 24 #define MS_PRESENTER BIT(2) 25 #define MS_RDESC BIT(3) 26 #define MS_NOGET BIT(4) 27 #define MS_DUPLICATE_USAGES BIT(5) 28 #define MS_SURFACE_DIAL BIT(6) 29 #define MS_QUIRK_FF BIT(7) 30 31 struct ms_data { 32 unsigned long quirks; 33 struct hid_device *hdev; 34 struct work_struct ff_worker; 35 __u8 strong; 36 __u8 weak; 37 void *output_report_dmabuf; 38 }; 39 40 #define XB1S_FF_REPORT 3 41 #define ENABLE_WEAK BIT(0) 42 #define ENABLE_STRONG BIT(1) 43 44 enum { 45 MAGNITUDE_STRONG = 2, 46 MAGNITUDE_WEAK, 47 MAGNITUDE_NUM 48 }; 49 50 struct xb1s_ff_report { 51 __u8 report_id; 52 __u8 enable; 53 __u8 magnitude[MAGNITUDE_NUM]; 54 __u8 duration_10ms; 55 __u8 start_delay_10ms; 56 __u8 loop_count; 57 } __packed; 58 59 static __u8 *ms_report_fixup(struct hid_device *hdev, __u8 *rdesc, 60 unsigned int *rsize) 61 { 62 struct ms_data *ms = hid_get_drvdata(hdev); 63 unsigned long quirks = ms->quirks; 64 65 /* 66 * Microsoft Wireless Desktop Receiver (Model 1028) has 67 * 'Usage Min/Max' where it ought to have 'Physical Min/Max' 68 */ 69 if ((quirks & MS_RDESC) && *rsize == 571 && rdesc[557] == 0x19 && 70 rdesc[559] == 0x29) { 71 hid_info(hdev, "fixing up Microsoft Wireless Receiver Model 1028 report descriptor\n"); 72 rdesc[557] = 0x35; 73 rdesc[559] = 0x45; 74 } 75 return rdesc; 76 } 77 78 #define ms_map_key_clear(c) hid_map_usage_clear(hi, usage, bit, max, \ 79 EV_KEY, (c)) 80 static int ms_ergonomy_kb_quirk(struct hid_input *hi, struct hid_usage *usage, 81 unsigned long **bit, int *max) 82 { 83 struct input_dev *input = hi->input; 84 85 if ((usage->hid & HID_USAGE_PAGE) == HID_UP_CONSUMER) { 86 switch (usage->hid & HID_USAGE) { 87 /* 88 * Microsoft uses these 2 reserved usage ids for 2 keys on 89 * the MS office kb labelled "Office Home" and "Task Pane". 90 */ 91 case 0x29d: 92 ms_map_key_clear(KEY_PROG1); 93 return 1; 94 case 0x29e: 95 ms_map_key_clear(KEY_PROG2); 96 return 1; 97 } 98 return 0; 99 } 100 101 if ((usage->hid & HID_USAGE_PAGE) != HID_UP_MSVENDOR) 102 return 0; 103 104 switch (usage->hid & HID_USAGE) { 105 case 0xfd06: ms_map_key_clear(KEY_CHAT); break; 106 case 0xfd07: ms_map_key_clear(KEY_PHONE); break; 107 case 0xff00: 108 /* Special keypad keys */ 109 ms_map_key_clear(KEY_KPEQUAL); 110 set_bit(KEY_KPLEFTPAREN, input->keybit); 111 set_bit(KEY_KPRIGHTPAREN, input->keybit); 112 break; 113 case 0xff01: 114 /* Scroll wheel */ 115 hid_map_usage_clear(hi, usage, bit, max, EV_REL, REL_WHEEL); 116 break; 117 case 0xff02: 118 /* 119 * This byte contains a copy of the modifier keys byte of a 120 * standard hid keyboard report, as send by interface 0 121 * (this usage is found on interface 1). 122 * 123 * This byte only gets send when another key in the same report 124 * changes state, and as such is useless, ignore it. 125 */ 126 return -1; 127 case 0xff05: 128 set_bit(EV_REP, input->evbit); 129 ms_map_key_clear(KEY_F13); 130 set_bit(KEY_F14, input->keybit); 131 set_bit(KEY_F15, input->keybit); 132 set_bit(KEY_F16, input->keybit); 133 set_bit(KEY_F17, input->keybit); 134 set_bit(KEY_F18, input->keybit); 135 break; 136 default: 137 return 0; 138 } 139 return 1; 140 } 141 142 static int ms_presenter_8k_quirk(struct hid_input *hi, struct hid_usage *usage, 143 unsigned long **bit, int *max) 144 { 145 if ((usage->hid & HID_USAGE_PAGE) != HID_UP_MSVENDOR) 146 return 0; 147 148 set_bit(EV_REP, hi->input->evbit); 149 switch (usage->hid & HID_USAGE) { 150 case 0xfd08: ms_map_key_clear(KEY_FORWARD); break; 151 case 0xfd09: ms_map_key_clear(KEY_BACK); break; 152 case 0xfd0b: ms_map_key_clear(KEY_PLAYPAUSE); break; 153 case 0xfd0e: ms_map_key_clear(KEY_CLOSE); break; 154 case 0xfd0f: ms_map_key_clear(KEY_PLAY); break; 155 default: 156 return 0; 157 } 158 return 1; 159 } 160 161 static int ms_surface_dial_quirk(struct hid_input *hi, struct hid_field *field, 162 struct hid_usage *usage, unsigned long **bit, int *max) 163 { 164 switch (usage->hid & HID_USAGE_PAGE) { 165 case 0xff070000: 166 /* fall-through */ 167 case HID_UP_DIGITIZER: 168 /* ignore those axis */ 169 return -1; 170 case HID_UP_GENDESK: 171 switch (usage->hid) { 172 case HID_GD_X: 173 /* fall-through */ 174 case HID_GD_Y: 175 /* fall-through */ 176 case HID_GD_RFKILL_BTN: 177 /* ignore those axis */ 178 return -1; 179 } 180 } 181 182 return 0; 183 } 184 185 static int ms_input_mapping(struct hid_device *hdev, struct hid_input *hi, 186 struct hid_field *field, struct hid_usage *usage, 187 unsigned long **bit, int *max) 188 { 189 struct ms_data *ms = hid_get_drvdata(hdev); 190 unsigned long quirks = ms->quirks; 191 192 if (quirks & MS_ERGONOMY) { 193 int ret = ms_ergonomy_kb_quirk(hi, usage, bit, max); 194 if (ret) 195 return ret; 196 } 197 198 if ((quirks & MS_PRESENTER) && 199 ms_presenter_8k_quirk(hi, usage, bit, max)) 200 return 1; 201 202 if (quirks & MS_SURFACE_DIAL) { 203 int ret = ms_surface_dial_quirk(hi, field, usage, bit, max); 204 205 if (ret) 206 return ret; 207 } 208 209 return 0; 210 } 211 212 static int ms_input_mapped(struct hid_device *hdev, struct hid_input *hi, 213 struct hid_field *field, struct hid_usage *usage, 214 unsigned long **bit, int *max) 215 { 216 struct ms_data *ms = hid_get_drvdata(hdev); 217 unsigned long quirks = ms->quirks; 218 219 if (quirks & MS_DUPLICATE_USAGES) 220 clear_bit(usage->code, *bit); 221 222 return 0; 223 } 224 225 static int ms_event(struct hid_device *hdev, struct hid_field *field, 226 struct hid_usage *usage, __s32 value) 227 { 228 struct ms_data *ms = hid_get_drvdata(hdev); 229 unsigned long quirks = ms->quirks; 230 struct input_dev *input; 231 232 if (!(hdev->claimed & HID_CLAIMED_INPUT) || !field->hidinput || 233 !usage->type) 234 return 0; 235 236 input = field->hidinput->input; 237 238 /* Handling MS keyboards special buttons */ 239 if (quirks & MS_ERGONOMY && usage->hid == (HID_UP_MSVENDOR | 0xff00)) { 240 /* Special keypad keys */ 241 input_report_key(input, KEY_KPEQUAL, value & 0x01); 242 input_report_key(input, KEY_KPLEFTPAREN, value & 0x02); 243 input_report_key(input, KEY_KPRIGHTPAREN, value & 0x04); 244 return 1; 245 } 246 247 if (quirks & MS_ERGONOMY && usage->hid == (HID_UP_MSVENDOR | 0xff01)) { 248 /* Scroll wheel */ 249 int step = ((value & 0x60) >> 5) + 1; 250 251 switch (value & 0x1f) { 252 case 0x01: 253 input_report_rel(input, REL_WHEEL, step); 254 break; 255 case 0x1f: 256 input_report_rel(input, REL_WHEEL, -step); 257 break; 258 } 259 return 1; 260 } 261 262 if (quirks & MS_ERGONOMY && usage->hid == (HID_UP_MSVENDOR | 0xff05)) { 263 static unsigned int last_key = 0; 264 unsigned int key = 0; 265 switch (value) { 266 case 0x01: key = KEY_F14; break; 267 case 0x02: key = KEY_F15; break; 268 case 0x04: key = KEY_F16; break; 269 case 0x08: key = KEY_F17; break; 270 case 0x10: key = KEY_F18; break; 271 } 272 if (key) { 273 input_event(input, usage->type, key, 1); 274 last_key = key; 275 } else 276 input_event(input, usage->type, last_key, 0); 277 278 return 1; 279 } 280 281 return 0; 282 } 283 284 static void ms_ff_worker(struct work_struct *work) 285 { 286 struct ms_data *ms = container_of(work, struct ms_data, ff_worker); 287 struct hid_device *hdev = ms->hdev; 288 struct xb1s_ff_report *r = ms->output_report_dmabuf; 289 int ret; 290 291 memset(r, 0, sizeof(*r)); 292 293 r->report_id = XB1S_FF_REPORT; 294 r->enable = ENABLE_WEAK | ENABLE_STRONG; 295 /* 296 * Specifying maximum duration and maximum loop count should 297 * cover maximum duration of a single effect, which is 65536 298 * ms 299 */ 300 r->duration_10ms = U8_MAX; 301 r->loop_count = U8_MAX; 302 r->magnitude[MAGNITUDE_STRONG] = ms->strong; /* left actuator */ 303 r->magnitude[MAGNITUDE_WEAK] = ms->weak; /* right actuator */ 304 305 ret = hid_hw_output_report(hdev, (__u8 *)r, sizeof(*r)); 306 if (ret < 0) 307 hid_warn(hdev, "failed to send FF report\n"); 308 } 309 310 static int ms_play_effect(struct input_dev *dev, void *data, 311 struct ff_effect *effect) 312 { 313 struct hid_device *hid = input_get_drvdata(dev); 314 struct ms_data *ms = hid_get_drvdata(hid); 315 316 if (effect->type != FF_RUMBLE) 317 return 0; 318 319 /* 320 * Magnitude is 0..100 so scale the 16-bit input here 321 */ 322 ms->strong = ((u32) effect->u.rumble.strong_magnitude * 100) / U16_MAX; 323 ms->weak = ((u32) effect->u.rumble.weak_magnitude * 100) / U16_MAX; 324 325 schedule_work(&ms->ff_worker); 326 return 0; 327 } 328 329 static int ms_init_ff(struct hid_device *hdev) 330 { 331 struct hid_input *hidinput; 332 struct input_dev *input_dev; 333 struct ms_data *ms = hid_get_drvdata(hdev); 334 335 if (list_empty(&hdev->inputs)) { 336 hid_err(hdev, "no inputs found\n"); 337 return -ENODEV; 338 } 339 hidinput = list_entry(hdev->inputs.next, struct hid_input, list); 340 input_dev = hidinput->input; 341 342 if (!(ms->quirks & MS_QUIRK_FF)) 343 return 0; 344 345 ms->hdev = hdev; 346 INIT_WORK(&ms->ff_worker, ms_ff_worker); 347 348 ms->output_report_dmabuf = devm_kzalloc(&hdev->dev, 349 sizeof(struct xb1s_ff_report), 350 GFP_KERNEL); 351 if (ms->output_report_dmabuf == NULL) 352 return -ENOMEM; 353 354 input_set_capability(input_dev, EV_FF, FF_RUMBLE); 355 return input_ff_create_memless(input_dev, NULL, ms_play_effect); 356 } 357 358 static void ms_remove_ff(struct hid_device *hdev) 359 { 360 struct ms_data *ms = hid_get_drvdata(hdev); 361 362 if (!(ms->quirks & MS_QUIRK_FF)) 363 return; 364 365 cancel_work_sync(&ms->ff_worker); 366 } 367 368 static int ms_probe(struct hid_device *hdev, const struct hid_device_id *id) 369 { 370 unsigned long quirks = id->driver_data; 371 struct ms_data *ms; 372 int ret; 373 374 ms = devm_kzalloc(&hdev->dev, sizeof(*ms), GFP_KERNEL); 375 if (ms == NULL) 376 return -ENOMEM; 377 378 ms->quirks = quirks; 379 380 hid_set_drvdata(hdev, ms); 381 382 if (quirks & MS_NOGET) 383 hdev->quirks |= HID_QUIRK_NOGET; 384 385 if (quirks & MS_SURFACE_DIAL) 386 hdev->quirks |= HID_QUIRK_INPUT_PER_APP; 387 388 ret = hid_parse(hdev); 389 if (ret) { 390 hid_err(hdev, "parse failed\n"); 391 goto err_free; 392 } 393 394 ret = hid_hw_start(hdev, HID_CONNECT_DEFAULT | ((quirks & MS_HIDINPUT) ? 395 HID_CONNECT_HIDINPUT_FORCE : 0)); 396 if (ret) { 397 hid_err(hdev, "hw start failed\n"); 398 goto err_free; 399 } 400 401 ret = ms_init_ff(hdev); 402 if (ret) 403 hid_err(hdev, "could not initialize ff, continuing anyway"); 404 405 return 0; 406 err_free: 407 return ret; 408 } 409 410 static void ms_remove(struct hid_device *hdev) 411 { 412 hid_hw_stop(hdev); 413 ms_remove_ff(hdev); 414 } 415 416 static const struct hid_device_id ms_devices[] = { 417 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_SIDEWINDER_GV), 418 .driver_data = MS_HIDINPUT }, 419 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_OFFICE_KB), 420 .driver_data = MS_ERGONOMY }, 421 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K), 422 .driver_data = MS_ERGONOMY }, 423 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE4K_JP), 424 .driver_data = MS_ERGONOMY }, 425 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_NE7K), 426 .driver_data = MS_ERGONOMY }, 427 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_LK6K), 428 .driver_data = MS_ERGONOMY | MS_RDESC }, 429 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_USB), 430 .driver_data = MS_PRESENTER }, 431 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3K), 432 .driver_data = MS_ERGONOMY }, 433 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_7K), 434 .driver_data = MS_ERGONOMY }, 435 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_600), 436 .driver_data = MS_ERGONOMY }, 437 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_DIGITAL_MEDIA_3KV1), 438 .driver_data = MS_ERGONOMY }, 439 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_WIRELESS_OPTICAL_DESKTOP_3_0), 440 .driver_data = MS_NOGET }, 441 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_MOUSE_4500), 442 .driver_data = MS_DUPLICATE_USAGES }, 443 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_POWER_COVER), 444 .driver_data = MS_HIDINPUT }, 445 { HID_USB_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_COMFORT_KEYBOARD), 446 .driver_data = MS_ERGONOMY}, 447 448 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_PRESENTER_8K_BT), 449 .driver_data = MS_PRESENTER }, 450 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, 0x091B), 451 .driver_data = MS_SURFACE_DIAL }, 452 { HID_BLUETOOTH_DEVICE(USB_VENDOR_ID_MICROSOFT, USB_DEVICE_ID_MS_XBOX_ONE_S_CONTROLLER), 453 .driver_data = MS_QUIRK_FF }, 454 { } 455 }; 456 MODULE_DEVICE_TABLE(hid, ms_devices); 457 458 static struct hid_driver ms_driver = { 459 .name = "microsoft", 460 .id_table = ms_devices, 461 .report_fixup = ms_report_fixup, 462 .input_mapping = ms_input_mapping, 463 .input_mapped = ms_input_mapped, 464 .event = ms_event, 465 .probe = ms_probe, 466 .remove = ms_remove, 467 }; 468 module_hid_driver(ms_driver); 469 470 MODULE_LICENSE("GPL"); 471