1 // SPDX-License-Identifier: GPL-2.0-only 2 /* 3 * AT and PS/2 keyboard driver 4 * 5 * Copyright (c) 1999-2002 Vojtech Pavlik 6 */ 7 8 9 /* 10 * This driver can handle standard AT keyboards and PS/2 keyboards in 11 * Translated and Raw Set 2 and Set 3, as well as AT keyboards on dumb 12 * input-only controllers and AT keyboards connected over a one way RS232 13 * converter. 14 */ 15 16 #include <linux/delay.h> 17 #include <linux/module.h> 18 #include <linux/slab.h> 19 #include <linux/interrupt.h> 20 #include <linux/init.h> 21 #include <linux/input.h> 22 #include <linux/input/vivaldi-fmap.h> 23 #include <linux/serio.h> 24 #include <linux/workqueue.h> 25 #include <linux/libps2.h> 26 #include <linux/mutex.h> 27 #include <linux/dmi.h> 28 #include <linux/property.h> 29 30 #define DRIVER_DESC "AT and PS/2 keyboard driver" 31 32 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>"); 33 MODULE_DESCRIPTION(DRIVER_DESC); 34 MODULE_LICENSE("GPL"); 35 36 static int atkbd_set = 2; 37 module_param_named(set, atkbd_set, int, 0); 38 MODULE_PARM_DESC(set, "Select keyboard code set (2 = default, 3 = PS/2 native)"); 39 40 #if defined(__i386__) || defined(__x86_64__) || defined(__hppa__) 41 static bool atkbd_reset; 42 #else 43 static bool atkbd_reset = true; 44 #endif 45 module_param_named(reset, atkbd_reset, bool, 0); 46 MODULE_PARM_DESC(reset, "Reset keyboard during initialization"); 47 48 static bool atkbd_softrepeat; 49 module_param_named(softrepeat, atkbd_softrepeat, bool, 0); 50 MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat"); 51 52 static bool atkbd_softraw = true; 53 module_param_named(softraw, atkbd_softraw, bool, 0); 54 MODULE_PARM_DESC(softraw, "Use software generated rawmode"); 55 56 static bool atkbd_scroll; 57 module_param_named(scroll, atkbd_scroll, bool, 0); 58 MODULE_PARM_DESC(scroll, "Enable scroll-wheel on MS Office and similar keyboards"); 59 60 static bool atkbd_extra; 61 module_param_named(extra, atkbd_extra, bool, 0); 62 MODULE_PARM_DESC(extra, "Enable extra LEDs and keys on IBM RapidAcces, EzKey and similar keyboards"); 63 64 static bool atkbd_terminal; 65 module_param_named(terminal, atkbd_terminal, bool, 0); 66 MODULE_PARM_DESC(terminal, "Enable break codes on an IBM Terminal keyboard connected via AT/PS2"); 67 68 #define SCANCODE(keymap) ((keymap >> 16) & 0xFFFF) 69 #define KEYCODE(keymap) (keymap & 0xFFFF) 70 71 /* 72 * Scancode to keycode tables. These are just the default setting, and 73 * are loadable via a userland utility. 74 */ 75 76 #define ATKBD_KEYMAP_SIZE 512 77 78 static const unsigned short atkbd_set2_keycode[ATKBD_KEYMAP_SIZE] = { 79 80 #ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES 81 82 /* XXX: need a more general approach */ 83 84 #include "hpps2atkbd.h" /* include the keyboard scancodes */ 85 86 #else 87 0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117, 88 0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0, 89 0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183, 90 0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185, 91 0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0, 92 0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85, 93 0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0, 94 82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99, 95 96 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 97 217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125, 98 173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127, 99 159, 0,115, 0,164, 0, 0,116,158, 0,172,166, 0, 0, 0,142, 100 157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0, 101 226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0, 102 0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112, 103 110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0, 104 105 0, 0, 0, 65, 99, 106 #endif 107 }; 108 109 static const unsigned short atkbd_set3_keycode[ATKBD_KEYMAP_SIZE] = { 110 111 0, 0, 0, 0, 0, 0, 0, 59, 1,138,128,129,130, 15, 41, 60, 112 131, 29, 42, 86, 58, 16, 2, 61,133, 56, 44, 31, 30, 17, 3, 62, 113 134, 46, 45, 32, 18, 5, 4, 63,135, 57, 47, 33, 20, 19, 6, 64, 114 136, 49, 48, 35, 34, 21, 7, 65,137,100, 50, 36, 22, 8, 9, 66, 115 125, 51, 37, 23, 24, 11, 10, 67,126, 52, 53, 38, 39, 25, 12, 68, 116 113,114, 40, 43, 26, 13, 87, 99, 97, 54, 28, 27, 43, 43, 88, 70, 117 108,105,119,103,111,107, 14,110, 0, 79,106, 75, 71,109,102,104, 118 82, 83, 80, 76, 77, 72, 69, 98, 0, 96, 81, 0, 78, 73, 55,183, 119 120 184,185,186,187, 74, 94, 92, 93, 0, 0, 0,125,126,127,112, 0, 121 0,139,172,163,165,115,152,172,166,140,160,154,113,114,167,168, 122 148,149,147,140 123 }; 124 125 static const unsigned short atkbd_unxlate_table[128] = { 126 0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13, 127 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27, 128 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42, 129 50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3, 130 11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105, 131 114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63, 132 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111, 133 19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110 134 }; 135 136 #define ATKBD_CMD_SETLEDS 0x10ed 137 #define ATKBD_CMD_GSCANSET 0x11f0 138 #define ATKBD_CMD_SSCANSET 0x10f0 139 #define ATKBD_CMD_GETID 0x02f2 140 #define ATKBD_CMD_SETREP 0x10f3 141 #define ATKBD_CMD_ENABLE 0x00f4 142 #define ATKBD_CMD_RESET_DIS 0x00f5 /* Reset to defaults and disable */ 143 #define ATKBD_CMD_RESET_DEF 0x00f6 /* Reset to defaults */ 144 #define ATKBD_CMD_SETALL_MB 0x00f8 /* Set all keys to give break codes */ 145 #define ATKBD_CMD_SETALL_MBR 0x00fa /* ... and repeat */ 146 #define ATKBD_CMD_RESET_BAT 0x02ff 147 #define ATKBD_CMD_RESEND 0x00fe 148 #define ATKBD_CMD_EX_ENABLE 0x10ea 149 #define ATKBD_CMD_EX_SETLEDS 0x20eb 150 #define ATKBD_CMD_OK_GETID 0x02e8 151 152 #define ATKBD_RET_ACK 0xfa 153 #define ATKBD_RET_NAK 0xfe 154 #define ATKBD_RET_BAT 0xaa 155 #define ATKBD_RET_EMUL0 0xe0 156 #define ATKBD_RET_EMUL1 0xe1 157 #define ATKBD_RET_RELEASE 0xf0 158 #define ATKBD_RET_HANJA 0xf1 159 #define ATKBD_RET_HANGEUL 0xf2 160 #define ATKBD_RET_ERR 0xff 161 162 #define ATKBD_KEY_UNKNOWN 0 163 #define ATKBD_KEY_NULL 255 164 165 #define ATKBD_SCR_1 0xfffe 166 #define ATKBD_SCR_2 0xfffd 167 #define ATKBD_SCR_4 0xfffc 168 #define ATKBD_SCR_8 0xfffb 169 #define ATKBD_SCR_CLICK 0xfffa 170 #define ATKBD_SCR_LEFT 0xfff9 171 #define ATKBD_SCR_RIGHT 0xfff8 172 173 #define ATKBD_SPECIAL ATKBD_SCR_RIGHT 174 175 #define ATKBD_LED_EVENT_BIT 0 176 #define ATKBD_REP_EVENT_BIT 1 177 178 #define ATKBD_XL_ERR 0x01 179 #define ATKBD_XL_BAT 0x02 180 #define ATKBD_XL_ACK 0x04 181 #define ATKBD_XL_NAK 0x08 182 #define ATKBD_XL_HANGEUL 0x10 183 #define ATKBD_XL_HANJA 0x20 184 185 static const struct { 186 unsigned short keycode; 187 unsigned char set2; 188 } atkbd_scroll_keys[] = { 189 { ATKBD_SCR_1, 0xc5 }, 190 { ATKBD_SCR_2, 0x9d }, 191 { ATKBD_SCR_4, 0xa4 }, 192 { ATKBD_SCR_8, 0x9b }, 193 { ATKBD_SCR_CLICK, 0xe0 }, 194 { ATKBD_SCR_LEFT, 0xcb }, 195 { ATKBD_SCR_RIGHT, 0xd2 }, 196 }; 197 198 /* 199 * The atkbd control structure 200 */ 201 202 struct atkbd { 203 204 struct ps2dev ps2dev; 205 struct input_dev *dev; 206 207 /* Written only during init */ 208 char name[64]; 209 char phys[32]; 210 211 unsigned short id; 212 unsigned short keycode[ATKBD_KEYMAP_SIZE]; 213 DECLARE_BITMAP(force_release_mask, ATKBD_KEYMAP_SIZE); 214 unsigned char set; 215 bool translated; 216 bool extra; 217 bool write; 218 bool softrepeat; 219 bool softraw; 220 bool scroll; 221 bool enabled; 222 223 /* Accessed only from interrupt */ 224 unsigned char emul; 225 bool resend; 226 bool release; 227 unsigned long xl_bit; 228 unsigned int last; 229 unsigned long time; 230 unsigned long err_count; 231 232 struct delayed_work event_work; 233 unsigned long event_jiffies; 234 unsigned long event_mask; 235 236 /* Serializes reconnect(), attr->set() and event work */ 237 struct mutex mutex; 238 239 struct vivaldi_data vdata; 240 }; 241 242 /* 243 * System-specific keymap fixup routine 244 */ 245 static void (*atkbd_platform_fixup)(struct atkbd *, const void *data); 246 static void *atkbd_platform_fixup_data; 247 static unsigned int (*atkbd_platform_scancode_fixup)(struct atkbd *, unsigned int); 248 249 /* 250 * Certain keyboards to not like ATKBD_CMD_RESET_DIS and stop responding 251 * to many commands until full reset (ATKBD_CMD_RESET_BAT) is performed. 252 */ 253 static bool atkbd_skip_deactivate; 254 255 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf, 256 ssize_t (*handler)(struct atkbd *, char *)); 257 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count, 258 ssize_t (*handler)(struct atkbd *, const char *, size_t)); 259 #define ATKBD_DEFINE_ATTR(_name) \ 260 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \ 261 static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \ 262 static ssize_t atkbd_do_show_##_name(struct device *d, \ 263 struct device_attribute *attr, char *b) \ 264 { \ 265 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \ 266 } \ 267 static ssize_t atkbd_do_set_##_name(struct device *d, \ 268 struct device_attribute *attr, const char *b, size_t s) \ 269 { \ 270 return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name); \ 271 } \ 272 static struct device_attribute atkbd_attr_##_name = \ 273 __ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name); 274 275 ATKBD_DEFINE_ATTR(extra); 276 ATKBD_DEFINE_ATTR(force_release); 277 ATKBD_DEFINE_ATTR(scroll); 278 ATKBD_DEFINE_ATTR(set); 279 ATKBD_DEFINE_ATTR(softrepeat); 280 ATKBD_DEFINE_ATTR(softraw); 281 282 #define ATKBD_DEFINE_RO_ATTR(_name) \ 283 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \ 284 static ssize_t atkbd_do_show_##_name(struct device *d, \ 285 struct device_attribute *attr, char *b) \ 286 { \ 287 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \ 288 } \ 289 static struct device_attribute atkbd_attr_##_name = \ 290 __ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL); 291 292 ATKBD_DEFINE_RO_ATTR(err_count); 293 ATKBD_DEFINE_RO_ATTR(function_row_physmap); 294 295 static struct attribute *atkbd_attributes[] = { 296 &atkbd_attr_extra.attr, 297 &atkbd_attr_force_release.attr, 298 &atkbd_attr_scroll.attr, 299 &atkbd_attr_set.attr, 300 &atkbd_attr_softrepeat.attr, 301 &atkbd_attr_softraw.attr, 302 &atkbd_attr_err_count.attr, 303 &atkbd_attr_function_row_physmap.attr, 304 NULL 305 }; 306 307 static ssize_t atkbd_show_function_row_physmap(struct atkbd *atkbd, char *buf) 308 { 309 return vivaldi_function_row_physmap_show(&atkbd->vdata, buf); 310 } 311 312 static struct atkbd *atkbd_from_serio(struct serio *serio) 313 { 314 struct ps2dev *ps2dev = serio_get_drvdata(serio); 315 316 return container_of(ps2dev, struct atkbd, ps2dev); 317 } 318 319 static umode_t atkbd_attr_is_visible(struct kobject *kobj, 320 struct attribute *attr, int i) 321 { 322 struct device *dev = kobj_to_dev(kobj); 323 struct serio *serio = to_serio_port(dev); 324 struct atkbd *atkbd = atkbd_from_serio(serio); 325 326 if (attr == &atkbd_attr_function_row_physmap.attr && 327 !atkbd->vdata.num_function_row_keys) 328 return 0; 329 330 return attr->mode; 331 } 332 333 static const struct attribute_group atkbd_attribute_group = { 334 .attrs = atkbd_attributes, 335 .is_visible = atkbd_attr_is_visible, 336 }; 337 338 __ATTRIBUTE_GROUPS(atkbd_attribute); 339 340 static const unsigned int xl_table[] = { 341 ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK, 342 ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL, 343 }; 344 345 /* 346 * Checks if we should mangle the scancode to extract 'release' bit 347 * in translated mode. 348 */ 349 static bool atkbd_need_xlate(unsigned long xl_bit, unsigned char code) 350 { 351 int i; 352 353 if (code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1) 354 return false; 355 356 for (i = 0; i < ARRAY_SIZE(xl_table); i++) 357 if (code == xl_table[i]) 358 return test_bit(i, &xl_bit); 359 360 return true; 361 } 362 363 /* 364 * Calculates new value of xl_bit so the driver can distinguish 365 * between make/break pair of scancodes for select keys and PS/2 366 * protocol responses. 367 */ 368 static void atkbd_calculate_xl_bit(struct atkbd *atkbd, unsigned char code) 369 { 370 int i; 371 372 for (i = 0; i < ARRAY_SIZE(xl_table); i++) { 373 if (!((code ^ xl_table[i]) & 0x7f)) { 374 if (code & 0x80) 375 __clear_bit(i, &atkbd->xl_bit); 376 else 377 __set_bit(i, &atkbd->xl_bit); 378 break; 379 } 380 } 381 } 382 383 /* 384 * Encode the scancode, 0xe0 prefix, and high bit into a single integer, 385 * keeping kernel 2.4 compatibility for set 2 386 */ 387 static unsigned int atkbd_compat_scancode(struct atkbd *atkbd, unsigned int code) 388 { 389 if (atkbd->set == 3) { 390 if (atkbd->emul == 1) 391 code |= 0x100; 392 } else { 393 code = (code & 0x7f) | ((code & 0x80) << 1); 394 if (atkbd->emul == 1) 395 code |= 0x80; 396 } 397 398 return code; 399 } 400 401 /* 402 * Tries to handle frame or parity error by requesting the keyboard controller 403 * to resend the last byte. This historically not done on x86 as controllers 404 * there typically do not implement this command. 405 */ 406 static bool __maybe_unused atkbd_handle_frame_error(struct ps2dev *ps2dev, 407 u8 data, unsigned int flags) 408 { 409 struct atkbd *atkbd = container_of(ps2dev, struct atkbd, ps2dev); 410 struct serio *serio = ps2dev->serio; 411 412 if ((flags & (SERIO_FRAME | SERIO_PARITY)) && 413 (~flags & SERIO_TIMEOUT) && 414 !atkbd->resend && atkbd->write) { 415 dev_warn(&serio->dev, "Frame/parity error: %02x\n", flags); 416 serio_write(serio, ATKBD_CMD_RESEND); 417 atkbd->resend = true; 418 return true; 419 } 420 421 if (!flags && data == ATKBD_RET_ACK) 422 atkbd->resend = false; 423 424 return false; 425 } 426 427 static enum ps2_disposition atkbd_pre_receive_byte(struct ps2dev *ps2dev, 428 u8 data, unsigned int flags) 429 { 430 struct serio *serio = ps2dev->serio; 431 432 dev_dbg(&serio->dev, "Received %02x flags %02x\n", data, flags); 433 434 #if !defined(__i386__) && !defined (__x86_64__) 435 if (atkbd_handle_frame_error(ps2dev, data, flags)) 436 return PS2_IGNORE; 437 #endif 438 439 return PS2_PROCESS; 440 } 441 442 static void atkbd_receive_byte(struct ps2dev *ps2dev, u8 data) 443 { 444 struct serio *serio = ps2dev->serio; 445 struct atkbd *atkbd = container_of(ps2dev, struct atkbd, ps2dev); 446 struct input_dev *dev = atkbd->dev; 447 unsigned int code = data; 448 int scroll = 0, hscroll = 0, click = -1; 449 int value; 450 unsigned short keycode; 451 452 pm_wakeup_event(&serio->dev, 0); 453 454 if (!atkbd->enabled) 455 return; 456 457 input_event(dev, EV_MSC, MSC_RAW, code); 458 459 if (atkbd_platform_scancode_fixup) 460 code = atkbd_platform_scancode_fixup(atkbd, code); 461 462 if (atkbd->translated) { 463 464 if (atkbd->emul || atkbd_need_xlate(atkbd->xl_bit, code)) { 465 atkbd->release = code >> 7; 466 code &= 0x7f; 467 } 468 469 if (!atkbd->emul) 470 atkbd_calculate_xl_bit(atkbd, data); 471 } 472 473 switch (code) { 474 case ATKBD_RET_BAT: 475 atkbd->enabled = false; 476 serio_reconnect(atkbd->ps2dev.serio); 477 return; 478 case ATKBD_RET_EMUL0: 479 atkbd->emul = 1; 480 return; 481 case ATKBD_RET_EMUL1: 482 atkbd->emul = 2; 483 return; 484 case ATKBD_RET_RELEASE: 485 atkbd->release = true; 486 return; 487 case ATKBD_RET_ACK: 488 case ATKBD_RET_NAK: 489 if (printk_ratelimit()) 490 dev_warn(&serio->dev, 491 "Spurious %s on %s. " 492 "Some program might be trying to access hardware directly.\n", 493 data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys); 494 return; 495 case ATKBD_RET_ERR: 496 atkbd->err_count++; 497 dev_dbg(&serio->dev, "Keyboard on %s reports too many keys pressed.\n", 498 serio->phys); 499 return; 500 } 501 502 code = atkbd_compat_scancode(atkbd, code); 503 504 if (atkbd->emul && --atkbd->emul) 505 return; 506 507 keycode = atkbd->keycode[code]; 508 509 if (!(atkbd->release && test_bit(code, atkbd->force_release_mask))) 510 if (keycode != ATKBD_KEY_NULL) 511 input_event(dev, EV_MSC, MSC_SCAN, code); 512 513 switch (keycode) { 514 case ATKBD_KEY_NULL: 515 break; 516 case ATKBD_KEY_UNKNOWN: 517 dev_warn(&serio->dev, 518 "Unknown key %s (%s set %d, code %#x on %s).\n", 519 atkbd->release ? "released" : "pressed", 520 atkbd->translated ? "translated" : "raw", 521 atkbd->set, code, serio->phys); 522 dev_warn(&serio->dev, 523 "Use 'setkeycodes %s%02x <keycode>' to make it known.\n", 524 code & 0x80 ? "e0" : "", code & 0x7f); 525 input_sync(dev); 526 break; 527 case ATKBD_SCR_1: 528 scroll = 1; 529 break; 530 case ATKBD_SCR_2: 531 scroll = 2; 532 break; 533 case ATKBD_SCR_4: 534 scroll = 4; 535 break; 536 case ATKBD_SCR_8: 537 scroll = 8; 538 break; 539 case ATKBD_SCR_CLICK: 540 click = !atkbd->release; 541 break; 542 case ATKBD_SCR_LEFT: 543 hscroll = -1; 544 break; 545 case ATKBD_SCR_RIGHT: 546 hscroll = 1; 547 break; 548 default: 549 if (atkbd->release) { 550 value = 0; 551 atkbd->last = 0; 552 } else if (!atkbd->softrepeat && test_bit(keycode, dev->key)) { 553 /* Workaround Toshiba laptop multiple keypress */ 554 value = time_before(jiffies, atkbd->time) && atkbd->last == code ? 1 : 2; 555 } else { 556 value = 1; 557 atkbd->last = code; 558 atkbd->time = jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]) / 2; 559 } 560 561 input_event(dev, EV_KEY, keycode, value); 562 input_sync(dev); 563 564 if (value && test_bit(code, atkbd->force_release_mask)) { 565 input_event(dev, EV_MSC, MSC_SCAN, code); 566 input_report_key(dev, keycode, 0); 567 input_sync(dev); 568 } 569 } 570 571 if (atkbd->scroll) { 572 if (click != -1) 573 input_report_key(dev, BTN_MIDDLE, click); 574 input_report_rel(dev, REL_WHEEL, 575 atkbd->release ? -scroll : scroll); 576 input_report_rel(dev, REL_HWHEEL, hscroll); 577 input_sync(dev); 578 } 579 580 atkbd->release = false; 581 } 582 583 static int atkbd_set_repeat_rate(struct atkbd *atkbd) 584 { 585 const short period[32] = 586 { 33, 37, 42, 46, 50, 54, 58, 63, 67, 75, 83, 92, 100, 109, 116, 125, 587 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 }; 588 const short delay[4] = 589 { 250, 500, 750, 1000 }; 590 591 struct input_dev *dev = atkbd->dev; 592 unsigned char param; 593 int i = 0, j = 0; 594 595 while (i < ARRAY_SIZE(period) - 1 && period[i] < dev->rep[REP_PERIOD]) 596 i++; 597 dev->rep[REP_PERIOD] = period[i]; 598 599 while (j < ARRAY_SIZE(delay) - 1 && delay[j] < dev->rep[REP_DELAY]) 600 j++; 601 dev->rep[REP_DELAY] = delay[j]; 602 603 param = i | (j << 5); 604 return ps2_command(&atkbd->ps2dev, ¶m, ATKBD_CMD_SETREP); 605 } 606 607 static int atkbd_set_leds(struct atkbd *atkbd) 608 { 609 struct input_dev *dev = atkbd->dev; 610 unsigned char param[2]; 611 612 param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0) 613 | (test_bit(LED_NUML, dev->led) ? 2 : 0) 614 | (test_bit(LED_CAPSL, dev->led) ? 4 : 0); 615 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS)) 616 return -1; 617 618 if (atkbd->extra) { 619 param[0] = 0; 620 param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0) 621 | (test_bit(LED_SLEEP, dev->led) ? 0x02 : 0) 622 | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0) 623 | (test_bit(LED_MISC, dev->led) ? 0x10 : 0) 624 | (test_bit(LED_MUTE, dev->led) ? 0x20 : 0); 625 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS)) 626 return -1; 627 } 628 629 return 0; 630 } 631 632 /* 633 * atkbd_event_work() is used to complete processing of events that 634 * can not be processed by input_event() which is often called from 635 * interrupt context. 636 */ 637 638 static void atkbd_event_work(struct work_struct *work) 639 { 640 struct atkbd *atkbd = container_of(work, struct atkbd, event_work.work); 641 642 mutex_lock(&atkbd->mutex); 643 644 if (!atkbd->enabled) { 645 /* 646 * Serio ports are resumed asynchronously so while driver core 647 * thinks that device is already fully operational in reality 648 * it may not be ready yet. In this case we need to keep 649 * rescheduling till reconnect completes. 650 */ 651 schedule_delayed_work(&atkbd->event_work, 652 msecs_to_jiffies(100)); 653 } else { 654 if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask)) 655 atkbd_set_leds(atkbd); 656 657 if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask)) 658 atkbd_set_repeat_rate(atkbd); 659 } 660 661 mutex_unlock(&atkbd->mutex); 662 } 663 664 /* 665 * Schedule switch for execution. We need to throttle requests, 666 * otherwise keyboard may become unresponsive. 667 */ 668 static void atkbd_schedule_event_work(struct atkbd *atkbd, int event_bit) 669 { 670 unsigned long delay = msecs_to_jiffies(50); 671 672 if (time_after(jiffies, atkbd->event_jiffies + delay)) 673 delay = 0; 674 675 atkbd->event_jiffies = jiffies; 676 set_bit(event_bit, &atkbd->event_mask); 677 mb(); 678 schedule_delayed_work(&atkbd->event_work, delay); 679 } 680 681 /* 682 * Event callback from the input module. Events that change the state of 683 * the hardware are processed here. If action can not be performed in 684 * interrupt context it is offloaded to atkbd_event_work. 685 */ 686 687 static int atkbd_event(struct input_dev *dev, 688 unsigned int type, unsigned int code, int value) 689 { 690 struct atkbd *atkbd = input_get_drvdata(dev); 691 692 if (!atkbd->write) 693 return -1; 694 695 switch (type) { 696 697 case EV_LED: 698 atkbd_schedule_event_work(atkbd, ATKBD_LED_EVENT_BIT); 699 return 0; 700 701 case EV_REP: 702 if (!atkbd->softrepeat) 703 atkbd_schedule_event_work(atkbd, ATKBD_REP_EVENT_BIT); 704 return 0; 705 706 default: 707 return -1; 708 } 709 } 710 711 /* 712 * atkbd_enable() signals that interrupt handler is allowed to 713 * generate input events. 714 */ 715 716 static inline void atkbd_enable(struct atkbd *atkbd) 717 { 718 serio_pause_rx(atkbd->ps2dev.serio); 719 atkbd->enabled = true; 720 serio_continue_rx(atkbd->ps2dev.serio); 721 } 722 723 /* 724 * atkbd_disable() tells input handler that all incoming data except 725 * for ACKs and command response should be dropped. 726 */ 727 728 static inline void atkbd_disable(struct atkbd *atkbd) 729 { 730 serio_pause_rx(atkbd->ps2dev.serio); 731 atkbd->enabled = false; 732 serio_continue_rx(atkbd->ps2dev.serio); 733 } 734 735 static int atkbd_activate(struct atkbd *atkbd) 736 { 737 struct ps2dev *ps2dev = &atkbd->ps2dev; 738 739 /* 740 * Enable the keyboard to receive keystrokes. 741 */ 742 743 if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) { 744 dev_err(&ps2dev->serio->dev, 745 "Failed to enable keyboard on %s\n", 746 ps2dev->serio->phys); 747 return -1; 748 } 749 750 return 0; 751 } 752 753 /* 754 * atkbd_deactivate() resets and disables the keyboard from sending 755 * keystrokes. 756 */ 757 758 static void atkbd_deactivate(struct atkbd *atkbd) 759 { 760 struct ps2dev *ps2dev = &atkbd->ps2dev; 761 762 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_DIS)) 763 dev_err(&ps2dev->serio->dev, 764 "Failed to deactivate keyboard on %s\n", 765 ps2dev->serio->phys); 766 } 767 768 #ifdef CONFIG_X86 769 static bool atkbd_is_portable_device(void) 770 { 771 static const char * const chassis_types[] = { 772 "8", /* Portable */ 773 "9", /* Laptop */ 774 "10", /* Notebook */ 775 "14", /* Sub-Notebook */ 776 "31", /* Convertible */ 777 "32", /* Detachable */ 778 }; 779 int i; 780 781 for (i = 0; i < ARRAY_SIZE(chassis_types); i++) 782 if (dmi_match(DMI_CHASSIS_TYPE, chassis_types[i])) 783 return true; 784 785 return false; 786 } 787 788 /* 789 * On many modern laptops ATKBD_CMD_GETID may cause problems, on these laptops 790 * the controller is always in translated mode. In this mode mice/touchpads will 791 * not work. So in this case simply assume a keyboard is connected to avoid 792 * confusing some laptop keyboards. 793 * 794 * Skipping ATKBD_CMD_GETID ends up using a fake keyboard id. Using the standard 795 * 0xab83 id is ok in translated mode, only atkbd_select_set() checks atkbd->id 796 * and in translated mode that is a no-op. 797 */ 798 static bool atkbd_skip_getid(struct atkbd *atkbd) 799 { 800 return atkbd->translated && atkbd_is_portable_device(); 801 } 802 #else 803 static inline bool atkbd_skip_getid(struct atkbd *atkbd) { return false; } 804 #endif 805 806 /* 807 * atkbd_probe() probes for an AT keyboard on a serio port. 808 */ 809 810 static int atkbd_probe(struct atkbd *atkbd) 811 { 812 struct ps2dev *ps2dev = &atkbd->ps2dev; 813 unsigned char param[2]; 814 bool skip_getid; 815 816 /* 817 * Some systems, where the bit-twiddling when testing the io-lines of the 818 * controller may confuse the keyboard need a full reset of the keyboard. On 819 * these systems the BIOS also usually doesn't do it for us. 820 */ 821 822 if (atkbd_reset) 823 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT)) 824 dev_warn(&ps2dev->serio->dev, 825 "keyboard reset failed on %s\n", 826 ps2dev->serio->phys); 827 828 /* 829 * Then we check the keyboard ID. We should get 0xab83 under normal conditions. 830 * Some keyboards report different values, but the first byte is always 0xab or 831 * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this 832 * should make sure we don't try to set the LEDs on it. 833 */ 834 835 param[0] = param[1] = 0xa5; /* initialize with invalid values */ 836 skip_getid = atkbd_skip_getid(atkbd); 837 if (skip_getid || ps2_command(ps2dev, param, ATKBD_CMD_GETID)) { 838 839 /* 840 * If the get ID command was skipped or failed, we check if we can at least set 841 * the LEDs on the keyboard. This should work on every keyboard out there. 842 * It also turns the LEDs off, which we want anyway. 843 */ 844 param[0] = 0; 845 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS)) 846 return -1; 847 atkbd->id = skip_getid ? 0xab83 : 0xabba; 848 return 0; 849 } 850 851 if (!ps2_is_keyboard_id(param[0])) 852 return -1; 853 854 atkbd->id = (param[0] << 8) | param[1]; 855 856 if (atkbd->id == 0xaca1 && atkbd->translated) { 857 dev_err(&ps2dev->serio->dev, 858 "NCD terminal keyboards are only supported on non-translating controllers. " 859 "Use i8042.direct=1 to disable translation.\n"); 860 return -1; 861 } 862 863 /* 864 * Make sure nothing is coming from the keyboard and disturbs our 865 * internal state. 866 */ 867 if (!atkbd_skip_deactivate) 868 atkbd_deactivate(atkbd); 869 870 return 0; 871 } 872 873 /* 874 * atkbd_select_set checks if a keyboard has a working Set 3 support, and 875 * sets it into that. Unfortunately there are keyboards that can be switched 876 * to Set 3, but don't work well in that (BTC Multimedia ...) 877 */ 878 879 static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra) 880 { 881 struct ps2dev *ps2dev = &atkbd->ps2dev; 882 unsigned char param[2]; 883 884 atkbd->extra = false; 885 /* 886 * For known special keyboards we can go ahead and set the correct set. 887 * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and 888 * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards. 889 */ 890 891 if (atkbd->translated) 892 return 2; 893 894 if (atkbd->id == 0xaca1) { 895 param[0] = 3; 896 ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET); 897 return 3; 898 } 899 900 if (allow_extra) { 901 param[0] = 0x71; 902 if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) { 903 atkbd->extra = true; 904 return 2; 905 } 906 } 907 908 if (atkbd_terminal) { 909 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MB); 910 return 3; 911 } 912 913 if (target_set != 3) 914 return 2; 915 916 if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) { 917 atkbd->id = param[0] << 8 | param[1]; 918 return 2; 919 } 920 921 param[0] = 3; 922 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET)) 923 return 2; 924 925 param[0] = 0; 926 if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET)) 927 return 2; 928 929 if (param[0] != 3) { 930 param[0] = 2; 931 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET)) 932 return 2; 933 } 934 935 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR); 936 937 return 3; 938 } 939 940 static int atkbd_reset_state(struct atkbd *atkbd) 941 { 942 struct ps2dev *ps2dev = &atkbd->ps2dev; 943 unsigned char param[1]; 944 945 /* 946 * Set the LEDs to a predefined state (all off). 947 */ 948 949 param[0] = 0; 950 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS)) 951 return -1; 952 953 /* 954 * Set autorepeat to fastest possible. 955 */ 956 957 param[0] = 0; 958 if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP)) 959 return -1; 960 961 return 0; 962 } 963 964 /* 965 * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a 966 * reboot. 967 */ 968 969 static void atkbd_cleanup(struct serio *serio) 970 { 971 struct atkbd *atkbd = atkbd_from_serio(serio); 972 973 atkbd_disable(atkbd); 974 ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_DEF); 975 } 976 977 978 /* 979 * atkbd_disconnect() closes and frees. 980 */ 981 982 static void atkbd_disconnect(struct serio *serio) 983 { 984 struct atkbd *atkbd = atkbd_from_serio(serio); 985 986 atkbd_disable(atkbd); 987 988 input_unregister_device(atkbd->dev); 989 990 /* 991 * Make sure we don't have a command in flight. 992 * Note that since atkbd->enabled is false event work will keep 993 * rescheduling itself until it gets canceled and will not try 994 * accessing freed input device or serio port. 995 */ 996 cancel_delayed_work_sync(&atkbd->event_work); 997 998 serio_close(serio); 999 serio_set_drvdata(serio, NULL); 1000 kfree(atkbd); 1001 } 1002 1003 /* 1004 * generate release events for the keycodes given in data 1005 */ 1006 static void atkbd_apply_forced_release_keylist(struct atkbd* atkbd, 1007 const void *data) 1008 { 1009 const unsigned int *keys = data; 1010 unsigned int i; 1011 1012 if (atkbd->set == 2) 1013 for (i = 0; keys[i] != -1U; i++) 1014 __set_bit(keys[i], atkbd->force_release_mask); 1015 } 1016 1017 /* 1018 * Most special keys (Fn+F?) on Dell laptops do not generate release 1019 * events so we have to do it ourselves. 1020 */ 1021 static unsigned int atkbd_dell_laptop_forced_release_keys[] = { 1022 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8f, 0x93, -1U 1023 }; 1024 1025 /* 1026 * Perform fixup for HP system that doesn't generate release 1027 * for its video switch 1028 */ 1029 static unsigned int atkbd_hp_forced_release_keys[] = { 1030 0x94, -1U 1031 }; 1032 1033 /* 1034 * Samsung NC10,NC20 with Fn+F? key release not working 1035 */ 1036 static unsigned int atkbd_samsung_forced_release_keys[] = { 1037 0x82, 0x83, 0x84, 0x86, 0x88, 0x89, 0xb3, 0xf7, 0xf9, -1U 1038 }; 1039 1040 /* 1041 * Amilo Pi 3525 key release for Fn+Volume keys not working 1042 */ 1043 static unsigned int atkbd_amilo_pi3525_forced_release_keys[] = { 1044 0x20, 0xa0, 0x2e, 0xae, 0x30, 0xb0, -1U 1045 }; 1046 1047 /* 1048 * Amilo Xi 3650 key release for light touch bar not working 1049 */ 1050 static unsigned int atkbd_amilo_xi3650_forced_release_keys[] = { 1051 0x67, 0xed, 0x90, 0xa2, 0x99, 0xa4, 0xae, 0xb0, -1U 1052 }; 1053 1054 /* 1055 * Soltech TA12 system with broken key release on volume keys and mute key 1056 */ 1057 static unsigned int atkdb_soltech_ta12_forced_release_keys[] = { 1058 0xa0, 0xae, 0xb0, -1U 1059 }; 1060 1061 /* 1062 * Many notebooks don't send key release event for volume up/down 1063 * keys, with key list below common among them 1064 */ 1065 static unsigned int atkbd_volume_forced_release_keys[] = { 1066 0xae, 0xb0, -1U 1067 }; 1068 1069 /* 1070 * OQO 01+ multimedia keys (64--66) generate e0 6x upon release whereas 1071 * they should be generating e4-e6 (0x80 | code). 1072 */ 1073 static unsigned int atkbd_oqo_01plus_scancode_fixup(struct atkbd *atkbd, 1074 unsigned int code) 1075 { 1076 if (atkbd->translated && atkbd->emul == 1 && 1077 (code == 0x64 || code == 0x65 || code == 0x66)) { 1078 atkbd->emul = 0; 1079 code |= 0x80; 1080 } 1081 1082 return code; 1083 } 1084 1085 static int atkbd_get_keymap_from_fwnode(struct atkbd *atkbd) 1086 { 1087 struct device *dev = &atkbd->ps2dev.serio->dev; 1088 int i, n; 1089 u32 *ptr; 1090 u16 scancode, keycode; 1091 1092 /* Parse "linux,keymap" property */ 1093 n = device_property_count_u32(dev, "linux,keymap"); 1094 if (n <= 0 || n > ATKBD_KEYMAP_SIZE) 1095 return -ENXIO; 1096 1097 ptr = kcalloc(n, sizeof(u32), GFP_KERNEL); 1098 if (!ptr) 1099 return -ENOMEM; 1100 1101 if (device_property_read_u32_array(dev, "linux,keymap", ptr, n)) { 1102 dev_err(dev, "problem parsing FW keymap property\n"); 1103 kfree(ptr); 1104 return -EINVAL; 1105 } 1106 1107 memset(atkbd->keycode, 0, sizeof(atkbd->keycode)); 1108 for (i = 0; i < n; i++) { 1109 scancode = SCANCODE(ptr[i]); 1110 keycode = KEYCODE(ptr[i]); 1111 atkbd->keycode[scancode] = keycode; 1112 } 1113 1114 kfree(ptr); 1115 return 0; 1116 } 1117 1118 /* 1119 * atkbd_set_keycode_table() initializes keyboard's keycode table 1120 * according to the selected scancode set 1121 */ 1122 1123 static void atkbd_set_keycode_table(struct atkbd *atkbd) 1124 { 1125 struct device *dev = &atkbd->ps2dev.serio->dev; 1126 unsigned int scancode; 1127 int i, j; 1128 1129 memset(atkbd->keycode, 0, sizeof(atkbd->keycode)); 1130 bitmap_zero(atkbd->force_release_mask, ATKBD_KEYMAP_SIZE); 1131 1132 if (!atkbd_get_keymap_from_fwnode(atkbd)) { 1133 dev_dbg(dev, "Using FW keymap\n"); 1134 } else if (atkbd->translated) { 1135 for (i = 0; i < 128; i++) { 1136 scancode = atkbd_unxlate_table[i]; 1137 atkbd->keycode[i] = atkbd_set2_keycode[scancode]; 1138 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80]; 1139 if (atkbd->scroll) 1140 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++) 1141 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2) 1142 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode; 1143 } 1144 } else if (atkbd->set == 3) { 1145 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode)); 1146 } else { 1147 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode)); 1148 1149 if (atkbd->scroll) 1150 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) { 1151 scancode = atkbd_scroll_keys[i].set2; 1152 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode; 1153 } 1154 } 1155 1156 /* 1157 * HANGEUL and HANJA keys do not send release events so we need to 1158 * generate such events ourselves 1159 */ 1160 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL); 1161 atkbd->keycode[scancode] = KEY_HANGEUL; 1162 __set_bit(scancode, atkbd->force_release_mask); 1163 1164 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA); 1165 atkbd->keycode[scancode] = KEY_HANJA; 1166 __set_bit(scancode, atkbd->force_release_mask); 1167 1168 /* 1169 * Perform additional fixups 1170 */ 1171 if (atkbd_platform_fixup) 1172 atkbd_platform_fixup(atkbd, atkbd_platform_fixup_data); 1173 } 1174 1175 /* 1176 * atkbd_set_device_attrs() sets up keyboard's input device structure 1177 */ 1178 1179 static void atkbd_set_device_attrs(struct atkbd *atkbd) 1180 { 1181 struct input_dev *input_dev = atkbd->dev; 1182 int i; 1183 1184 if (atkbd->extra) 1185 snprintf(atkbd->name, sizeof(atkbd->name), 1186 "AT Set 2 Extra keyboard"); 1187 else 1188 snprintf(atkbd->name, sizeof(atkbd->name), 1189 "AT %s Set %d keyboard", 1190 atkbd->translated ? "Translated" : "Raw", atkbd->set); 1191 1192 snprintf(atkbd->phys, sizeof(atkbd->phys), 1193 "%s/input0", atkbd->ps2dev.serio->phys); 1194 1195 input_dev->name = atkbd->name; 1196 input_dev->phys = atkbd->phys; 1197 input_dev->id.bustype = BUS_I8042; 1198 input_dev->id.vendor = 0x0001; 1199 input_dev->id.product = atkbd->translated ? 1 : atkbd->set; 1200 input_dev->id.version = atkbd->id; 1201 input_dev->event = atkbd_event; 1202 input_dev->dev.parent = &atkbd->ps2dev.serio->dev; 1203 1204 input_set_drvdata(input_dev, atkbd); 1205 1206 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | 1207 BIT_MASK(EV_MSC); 1208 1209 if (atkbd->write) { 1210 input_dev->evbit[0] |= BIT_MASK(EV_LED); 1211 input_dev->ledbit[0] = BIT_MASK(LED_NUML) | 1212 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL); 1213 } 1214 1215 if (atkbd->extra) 1216 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) | 1217 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) | 1218 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC); 1219 1220 if (!atkbd->softrepeat) { 1221 input_dev->rep[REP_DELAY] = 250; 1222 input_dev->rep[REP_PERIOD] = 33; 1223 } 1224 1225 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) : 1226 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN); 1227 1228 if (atkbd->scroll) { 1229 input_dev->evbit[0] |= BIT_MASK(EV_REL); 1230 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) | 1231 BIT_MASK(REL_HWHEEL); 1232 __set_bit(BTN_MIDDLE, input_dev->keybit); 1233 } 1234 1235 input_dev->keycode = atkbd->keycode; 1236 input_dev->keycodesize = sizeof(unsigned short); 1237 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode); 1238 1239 for (i = 0; i < ATKBD_KEYMAP_SIZE; i++) { 1240 if (atkbd->keycode[i] != KEY_RESERVED && 1241 atkbd->keycode[i] != ATKBD_KEY_NULL && 1242 atkbd->keycode[i] < ATKBD_SPECIAL) { 1243 __set_bit(atkbd->keycode[i], input_dev->keybit); 1244 } 1245 } 1246 } 1247 1248 static void atkbd_parse_fwnode_data(struct serio *serio) 1249 { 1250 struct atkbd *atkbd = atkbd_from_serio(serio); 1251 struct device *dev = &serio->dev; 1252 int n; 1253 1254 /* Parse "function-row-physmap" property */ 1255 n = device_property_count_u32(dev, "function-row-physmap"); 1256 if (n > 0 && n <= VIVALDI_MAX_FUNCTION_ROW_KEYS && 1257 !device_property_read_u32_array(dev, "function-row-physmap", 1258 atkbd->vdata.function_row_physmap, 1259 n)) { 1260 atkbd->vdata.num_function_row_keys = n; 1261 dev_dbg(dev, "FW reported %d function-row key locations\n", n); 1262 } 1263 } 1264 1265 /* 1266 * atkbd_connect() is called when the serio module finds an interface 1267 * that isn't handled yet by an appropriate device driver. We check if 1268 * there is an AT keyboard out there and if yes, we register ourselves 1269 * to the input module. 1270 */ 1271 1272 static int atkbd_connect(struct serio *serio, struct serio_driver *drv) 1273 { 1274 struct atkbd *atkbd; 1275 struct input_dev *dev; 1276 int err = -ENOMEM; 1277 1278 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL); 1279 dev = input_allocate_device(); 1280 if (!atkbd || !dev) 1281 goto fail1; 1282 1283 atkbd->dev = dev; 1284 ps2_init(&atkbd->ps2dev, serio, 1285 atkbd_pre_receive_byte, atkbd_receive_byte); 1286 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work); 1287 mutex_init(&atkbd->mutex); 1288 1289 switch (serio->id.type) { 1290 1291 case SERIO_8042_XL: 1292 atkbd->translated = true; 1293 fallthrough; 1294 1295 case SERIO_8042: 1296 if (serio->write) 1297 atkbd->write = true; 1298 break; 1299 } 1300 1301 atkbd->softraw = atkbd_softraw; 1302 atkbd->softrepeat = atkbd_softrepeat; 1303 atkbd->scroll = atkbd_scroll; 1304 1305 if (atkbd->softrepeat) 1306 atkbd->softraw = true; 1307 1308 serio_set_drvdata(serio, atkbd); 1309 1310 err = serio_open(serio, drv); 1311 if (err) 1312 goto fail2; 1313 1314 if (atkbd->write) { 1315 1316 if (atkbd_probe(atkbd)) { 1317 err = -ENODEV; 1318 goto fail3; 1319 } 1320 1321 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra); 1322 atkbd_reset_state(atkbd); 1323 1324 } else { 1325 atkbd->set = 2; 1326 atkbd->id = 0xab00; 1327 } 1328 1329 atkbd_parse_fwnode_data(serio); 1330 1331 atkbd_set_keycode_table(atkbd); 1332 atkbd_set_device_attrs(atkbd); 1333 1334 atkbd_enable(atkbd); 1335 if (serio->write) 1336 atkbd_activate(atkbd); 1337 1338 err = input_register_device(atkbd->dev); 1339 if (err) 1340 goto fail3; 1341 1342 return 0; 1343 1344 fail3: serio_close(serio); 1345 fail2: serio_set_drvdata(serio, NULL); 1346 fail1: input_free_device(dev); 1347 kfree(atkbd); 1348 return err; 1349 } 1350 1351 /* 1352 * atkbd_reconnect() tries to restore keyboard into a sane state and is 1353 * most likely called on resume. 1354 */ 1355 1356 static int atkbd_reconnect(struct serio *serio) 1357 { 1358 struct atkbd *atkbd = atkbd_from_serio(serio); 1359 struct serio_driver *drv = serio->drv; 1360 int retval = -1; 1361 1362 if (!atkbd || !drv) { 1363 dev_dbg(&serio->dev, 1364 "reconnect request, but serio is disconnected, ignoring...\n"); 1365 return -1; 1366 } 1367 1368 mutex_lock(&atkbd->mutex); 1369 1370 atkbd_disable(atkbd); 1371 1372 if (atkbd->write) { 1373 if (atkbd_probe(atkbd)) 1374 goto out; 1375 1376 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra)) 1377 goto out; 1378 1379 /* 1380 * Restore LED state and repeat rate. While input core 1381 * will do this for us at resume time reconnect may happen 1382 * because user requested it via sysfs or simply because 1383 * keyboard was unplugged and plugged in again so we need 1384 * to do it ourselves here. 1385 */ 1386 atkbd_set_leds(atkbd); 1387 if (!atkbd->softrepeat) 1388 atkbd_set_repeat_rate(atkbd); 1389 1390 } 1391 1392 /* 1393 * Reset our state machine in case reconnect happened in the middle 1394 * of multi-byte scancode. 1395 */ 1396 atkbd->xl_bit = 0; 1397 atkbd->emul = 0; 1398 1399 atkbd_enable(atkbd); 1400 if (atkbd->write) 1401 atkbd_activate(atkbd); 1402 1403 retval = 0; 1404 1405 out: 1406 mutex_unlock(&atkbd->mutex); 1407 return retval; 1408 } 1409 1410 static const struct serio_device_id atkbd_serio_ids[] = { 1411 { 1412 .type = SERIO_8042, 1413 .proto = SERIO_ANY, 1414 .id = SERIO_ANY, 1415 .extra = SERIO_ANY, 1416 }, 1417 { 1418 .type = SERIO_8042_XL, 1419 .proto = SERIO_ANY, 1420 .id = SERIO_ANY, 1421 .extra = SERIO_ANY, 1422 }, 1423 { 1424 .type = SERIO_RS232, 1425 .proto = SERIO_PS2SER, 1426 .id = SERIO_ANY, 1427 .extra = SERIO_ANY, 1428 }, 1429 { 0 } 1430 }; 1431 1432 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids); 1433 1434 static struct serio_driver atkbd_drv = { 1435 .driver = { 1436 .name = "atkbd", 1437 .dev_groups = atkbd_attribute_groups, 1438 }, 1439 .description = DRIVER_DESC, 1440 .id_table = atkbd_serio_ids, 1441 .interrupt = ps2_interrupt, 1442 .connect = atkbd_connect, 1443 .reconnect = atkbd_reconnect, 1444 .disconnect = atkbd_disconnect, 1445 .cleanup = atkbd_cleanup, 1446 }; 1447 1448 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf, 1449 ssize_t (*handler)(struct atkbd *, char *)) 1450 { 1451 struct serio *serio = to_serio_port(dev); 1452 struct atkbd *atkbd = atkbd_from_serio(serio); 1453 1454 return handler(atkbd, buf); 1455 } 1456 1457 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count, 1458 ssize_t (*handler)(struct atkbd *, const char *, size_t)) 1459 { 1460 struct serio *serio = to_serio_port(dev); 1461 struct atkbd *atkbd = atkbd_from_serio(serio); 1462 int retval; 1463 1464 retval = mutex_lock_interruptible(&atkbd->mutex); 1465 if (retval) 1466 return retval; 1467 1468 atkbd_disable(atkbd); 1469 retval = handler(atkbd, buf, count); 1470 atkbd_enable(atkbd); 1471 1472 mutex_unlock(&atkbd->mutex); 1473 1474 return retval; 1475 } 1476 1477 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf) 1478 { 1479 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0); 1480 } 1481 1482 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count) 1483 { 1484 struct input_dev *old_dev, *new_dev; 1485 unsigned int value; 1486 int err; 1487 bool old_extra; 1488 unsigned char old_set; 1489 1490 if (!atkbd->write) 1491 return -EIO; 1492 1493 err = kstrtouint(buf, 10, &value); 1494 if (err) 1495 return err; 1496 1497 if (value > 1) 1498 return -EINVAL; 1499 1500 if (atkbd->extra != value) { 1501 /* 1502 * Since device's properties will change we need to 1503 * unregister old device. But allocate and register 1504 * new one first to make sure we have it. 1505 */ 1506 old_dev = atkbd->dev; 1507 old_extra = atkbd->extra; 1508 old_set = atkbd->set; 1509 1510 new_dev = input_allocate_device(); 1511 if (!new_dev) 1512 return -ENOMEM; 1513 1514 atkbd->dev = new_dev; 1515 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value); 1516 atkbd_reset_state(atkbd); 1517 atkbd_activate(atkbd); 1518 atkbd_set_keycode_table(atkbd); 1519 atkbd_set_device_attrs(atkbd); 1520 1521 err = input_register_device(atkbd->dev); 1522 if (err) { 1523 input_free_device(new_dev); 1524 1525 atkbd->dev = old_dev; 1526 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra); 1527 atkbd_set_keycode_table(atkbd); 1528 atkbd_set_device_attrs(atkbd); 1529 1530 return err; 1531 } 1532 input_unregister_device(old_dev); 1533 1534 } 1535 return count; 1536 } 1537 1538 static ssize_t atkbd_show_force_release(struct atkbd *atkbd, char *buf) 1539 { 1540 size_t len = scnprintf(buf, PAGE_SIZE - 1, "%*pbl", 1541 ATKBD_KEYMAP_SIZE, atkbd->force_release_mask); 1542 1543 buf[len++] = '\n'; 1544 buf[len] = '\0'; 1545 1546 return len; 1547 } 1548 1549 static ssize_t atkbd_set_force_release(struct atkbd *atkbd, 1550 const char *buf, size_t count) 1551 { 1552 /* 64 bytes on stack should be acceptable */ 1553 DECLARE_BITMAP(new_mask, ATKBD_KEYMAP_SIZE); 1554 int err; 1555 1556 err = bitmap_parselist(buf, new_mask, ATKBD_KEYMAP_SIZE); 1557 if (err) 1558 return err; 1559 1560 memcpy(atkbd->force_release_mask, new_mask, sizeof(atkbd->force_release_mask)); 1561 return count; 1562 } 1563 1564 1565 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf) 1566 { 1567 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0); 1568 } 1569 1570 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count) 1571 { 1572 struct input_dev *old_dev, *new_dev; 1573 unsigned int value; 1574 int err; 1575 bool old_scroll; 1576 1577 err = kstrtouint(buf, 10, &value); 1578 if (err) 1579 return err; 1580 1581 if (value > 1) 1582 return -EINVAL; 1583 1584 if (atkbd->scroll != value) { 1585 old_dev = atkbd->dev; 1586 old_scroll = atkbd->scroll; 1587 1588 new_dev = input_allocate_device(); 1589 if (!new_dev) 1590 return -ENOMEM; 1591 1592 atkbd->dev = new_dev; 1593 atkbd->scroll = value; 1594 atkbd_set_keycode_table(atkbd); 1595 atkbd_set_device_attrs(atkbd); 1596 1597 err = input_register_device(atkbd->dev); 1598 if (err) { 1599 input_free_device(new_dev); 1600 1601 atkbd->scroll = old_scroll; 1602 atkbd->dev = old_dev; 1603 atkbd_set_keycode_table(atkbd); 1604 atkbd_set_device_attrs(atkbd); 1605 1606 return err; 1607 } 1608 input_unregister_device(old_dev); 1609 } 1610 return count; 1611 } 1612 1613 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf) 1614 { 1615 return sprintf(buf, "%d\n", atkbd->set); 1616 } 1617 1618 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count) 1619 { 1620 struct input_dev *old_dev, *new_dev; 1621 unsigned int value; 1622 int err; 1623 unsigned char old_set; 1624 bool old_extra; 1625 1626 if (!atkbd->write) 1627 return -EIO; 1628 1629 err = kstrtouint(buf, 10, &value); 1630 if (err) 1631 return err; 1632 1633 if (value != 2 && value != 3) 1634 return -EINVAL; 1635 1636 if (atkbd->set != value) { 1637 old_dev = atkbd->dev; 1638 old_extra = atkbd->extra; 1639 old_set = atkbd->set; 1640 1641 new_dev = input_allocate_device(); 1642 if (!new_dev) 1643 return -ENOMEM; 1644 1645 atkbd->dev = new_dev; 1646 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra); 1647 atkbd_reset_state(atkbd); 1648 atkbd_activate(atkbd); 1649 atkbd_set_keycode_table(atkbd); 1650 atkbd_set_device_attrs(atkbd); 1651 1652 err = input_register_device(atkbd->dev); 1653 if (err) { 1654 input_free_device(new_dev); 1655 1656 atkbd->dev = old_dev; 1657 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra); 1658 atkbd_set_keycode_table(atkbd); 1659 atkbd_set_device_attrs(atkbd); 1660 1661 return err; 1662 } 1663 input_unregister_device(old_dev); 1664 } 1665 return count; 1666 } 1667 1668 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf) 1669 { 1670 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0); 1671 } 1672 1673 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count) 1674 { 1675 struct input_dev *old_dev, *new_dev; 1676 unsigned int value; 1677 int err; 1678 bool old_softrepeat, old_softraw; 1679 1680 if (!atkbd->write) 1681 return -EIO; 1682 1683 err = kstrtouint(buf, 10, &value); 1684 if (err) 1685 return err; 1686 1687 if (value > 1) 1688 return -EINVAL; 1689 1690 if (atkbd->softrepeat != value) { 1691 old_dev = atkbd->dev; 1692 old_softrepeat = atkbd->softrepeat; 1693 old_softraw = atkbd->softraw; 1694 1695 new_dev = input_allocate_device(); 1696 if (!new_dev) 1697 return -ENOMEM; 1698 1699 atkbd->dev = new_dev; 1700 atkbd->softrepeat = value; 1701 if (atkbd->softrepeat) 1702 atkbd->softraw = true; 1703 atkbd_set_device_attrs(atkbd); 1704 1705 err = input_register_device(atkbd->dev); 1706 if (err) { 1707 input_free_device(new_dev); 1708 1709 atkbd->dev = old_dev; 1710 atkbd->softrepeat = old_softrepeat; 1711 atkbd->softraw = old_softraw; 1712 atkbd_set_device_attrs(atkbd); 1713 1714 return err; 1715 } 1716 input_unregister_device(old_dev); 1717 } 1718 return count; 1719 } 1720 1721 1722 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf) 1723 { 1724 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0); 1725 } 1726 1727 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count) 1728 { 1729 struct input_dev *old_dev, *new_dev; 1730 unsigned int value; 1731 int err; 1732 bool old_softraw; 1733 1734 err = kstrtouint(buf, 10, &value); 1735 if (err) 1736 return err; 1737 1738 if (value > 1) 1739 return -EINVAL; 1740 1741 if (atkbd->softraw != value) { 1742 old_dev = atkbd->dev; 1743 old_softraw = atkbd->softraw; 1744 1745 new_dev = input_allocate_device(); 1746 if (!new_dev) 1747 return -ENOMEM; 1748 1749 atkbd->dev = new_dev; 1750 atkbd->softraw = value; 1751 atkbd_set_device_attrs(atkbd); 1752 1753 err = input_register_device(atkbd->dev); 1754 if (err) { 1755 input_free_device(new_dev); 1756 1757 atkbd->dev = old_dev; 1758 atkbd->softraw = old_softraw; 1759 atkbd_set_device_attrs(atkbd); 1760 1761 return err; 1762 } 1763 input_unregister_device(old_dev); 1764 } 1765 return count; 1766 } 1767 1768 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf) 1769 { 1770 return sprintf(buf, "%lu\n", atkbd->err_count); 1771 } 1772 1773 static int __init atkbd_setup_forced_release(const struct dmi_system_id *id) 1774 { 1775 atkbd_platform_fixup = atkbd_apply_forced_release_keylist; 1776 atkbd_platform_fixup_data = id->driver_data; 1777 1778 return 1; 1779 } 1780 1781 static int __init atkbd_setup_scancode_fixup(const struct dmi_system_id *id) 1782 { 1783 atkbd_platform_scancode_fixup = id->driver_data; 1784 1785 return 1; 1786 } 1787 1788 static int __init atkbd_deactivate_fixup(const struct dmi_system_id *id) 1789 { 1790 atkbd_skip_deactivate = true; 1791 return 1; 1792 } 1793 1794 /* 1795 * NOTE: do not add any more "force release" quirks to this table. The 1796 * task of adjusting list of keys that should be "released" automatically 1797 * by the driver is now delegated to userspace tools, such as udev, so 1798 * submit such quirks there. 1799 */ 1800 static const struct dmi_system_id atkbd_dmi_quirk_table[] __initconst = { 1801 { 1802 .matches = { 1803 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 1804 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */ 1805 }, 1806 .callback = atkbd_setup_forced_release, 1807 .driver_data = atkbd_dell_laptop_forced_release_keys, 1808 }, 1809 { 1810 .matches = { 1811 DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"), 1812 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */ 1813 }, 1814 .callback = atkbd_setup_forced_release, 1815 .driver_data = atkbd_dell_laptop_forced_release_keys, 1816 }, 1817 { 1818 .matches = { 1819 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1820 DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"), 1821 }, 1822 .callback = atkbd_setup_forced_release, 1823 .driver_data = atkbd_hp_forced_release_keys, 1824 }, 1825 { 1826 .matches = { 1827 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1828 DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion ZV6100"), 1829 }, 1830 .callback = atkbd_setup_forced_release, 1831 .driver_data = atkbd_volume_forced_release_keys, 1832 }, 1833 { 1834 .matches = { 1835 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1836 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4000"), 1837 }, 1838 .callback = atkbd_setup_forced_release, 1839 .driver_data = atkbd_volume_forced_release_keys, 1840 }, 1841 { 1842 .matches = { 1843 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1844 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4100"), 1845 }, 1846 .callback = atkbd_setup_forced_release, 1847 .driver_data = atkbd_volume_forced_release_keys, 1848 }, 1849 { 1850 .matches = { 1851 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1852 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4200"), 1853 }, 1854 .callback = atkbd_setup_forced_release, 1855 .driver_data = atkbd_volume_forced_release_keys, 1856 }, 1857 { 1858 /* Inventec Symphony */ 1859 .matches = { 1860 DMI_MATCH(DMI_SYS_VENDOR, "INVENTEC"), 1861 DMI_MATCH(DMI_PRODUCT_NAME, "SYMPHONY 6.0/7.0"), 1862 }, 1863 .callback = atkbd_setup_forced_release, 1864 .driver_data = atkbd_volume_forced_release_keys, 1865 }, 1866 { 1867 /* Samsung NC10 */ 1868 .matches = { 1869 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), 1870 DMI_MATCH(DMI_PRODUCT_NAME, "NC10"), 1871 }, 1872 .callback = atkbd_setup_forced_release, 1873 .driver_data = atkbd_samsung_forced_release_keys, 1874 }, 1875 { 1876 /* Samsung NC20 */ 1877 .matches = { 1878 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), 1879 DMI_MATCH(DMI_PRODUCT_NAME, "NC20"), 1880 }, 1881 .callback = atkbd_setup_forced_release, 1882 .driver_data = atkbd_samsung_forced_release_keys, 1883 }, 1884 { 1885 /* Samsung SQ45S70S */ 1886 .matches = { 1887 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), 1888 DMI_MATCH(DMI_PRODUCT_NAME, "SQ45S70S"), 1889 }, 1890 .callback = atkbd_setup_forced_release, 1891 .driver_data = atkbd_samsung_forced_release_keys, 1892 }, 1893 { 1894 /* Fujitsu Amilo PA 1510 */ 1895 .matches = { 1896 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1897 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 1510"), 1898 }, 1899 .callback = atkbd_setup_forced_release, 1900 .driver_data = atkbd_volume_forced_release_keys, 1901 }, 1902 { 1903 /* Fujitsu Amilo Pi 3525 */ 1904 .matches = { 1905 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1906 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 3525"), 1907 }, 1908 .callback = atkbd_setup_forced_release, 1909 .driver_data = atkbd_amilo_pi3525_forced_release_keys, 1910 }, 1911 { 1912 /* Fujitsu Amilo Xi 3650 */ 1913 .matches = { 1914 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1915 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 3650"), 1916 }, 1917 .callback = atkbd_setup_forced_release, 1918 .driver_data = atkbd_amilo_xi3650_forced_release_keys, 1919 }, 1920 { 1921 .matches = { 1922 DMI_MATCH(DMI_SYS_VENDOR, "Soltech Corporation"), 1923 DMI_MATCH(DMI_PRODUCT_NAME, "TA12"), 1924 }, 1925 .callback = atkbd_setup_forced_release, 1926 .driver_data = atkdb_soltech_ta12_forced_release_keys, 1927 }, 1928 { 1929 /* OQO Model 01+ */ 1930 .matches = { 1931 DMI_MATCH(DMI_SYS_VENDOR, "OQO"), 1932 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPTO"), 1933 }, 1934 .callback = atkbd_setup_scancode_fixup, 1935 .driver_data = atkbd_oqo_01plus_scancode_fixup, 1936 }, 1937 { 1938 .matches = { 1939 DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"), 1940 }, 1941 .callback = atkbd_deactivate_fixup, 1942 }, 1943 { } 1944 }; 1945 1946 static int __init atkbd_init(void) 1947 { 1948 dmi_check_system(atkbd_dmi_quirk_table); 1949 1950 return serio_register_driver(&atkbd_drv); 1951 } 1952 1953 static void __exit atkbd_exit(void) 1954 { 1955 serio_unregister_driver(&atkbd_drv); 1956 } 1957 1958 module_init(atkbd_init); 1959 module_exit(atkbd_exit); 1960