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 a fake id is 795 * ok in translated mode, only atkbd_select_set() checks atkbd->id and in 796 * 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]; 814 815 /* 816 * Some systems, where the bit-twiddling when testing the io-lines of the 817 * controller may confuse the keyboard need a full reset of the keyboard. On 818 * these systems the BIOS also usually doesn't do it for us. 819 */ 820 821 if (atkbd_reset) 822 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT)) 823 dev_warn(&ps2dev->serio->dev, 824 "keyboard reset failed on %s\n", 825 ps2dev->serio->phys); 826 827 /* 828 * Then we check the keyboard ID. We should get 0xab83 under normal conditions. 829 * Some keyboards report different values, but the first byte is always 0xab or 830 * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this 831 * should make sure we don't try to set the LEDs on it. 832 */ 833 834 param[0] = param[1] = 0xa5; /* initialize with invalid values */ 835 if (atkbd_skip_getid(atkbd) || ps2_command(ps2dev, param, ATKBD_CMD_GETID)) { 836 837 /* 838 * If the get ID command was skipped or failed, we check if we can at least set 839 * the LEDs on the keyboard. This should work on every keyboard out there. 840 * It also turns the LEDs off, which we want anyway. 841 */ 842 param[0] = 0; 843 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS)) 844 return -1; 845 atkbd->id = 0xabba; 846 return 0; 847 } 848 849 if (!ps2_is_keyboard_id(param[0])) 850 return -1; 851 852 atkbd->id = (param[0] << 8) | param[1]; 853 854 if (atkbd->id == 0xaca1 && atkbd->translated) { 855 dev_err(&ps2dev->serio->dev, 856 "NCD terminal keyboards are only supported on non-translating controllers. " 857 "Use i8042.direct=1 to disable translation.\n"); 858 return -1; 859 } 860 861 /* 862 * Make sure nothing is coming from the keyboard and disturbs our 863 * internal state. 864 */ 865 if (!atkbd_skip_deactivate) 866 atkbd_deactivate(atkbd); 867 868 return 0; 869 } 870 871 /* 872 * atkbd_select_set checks if a keyboard has a working Set 3 support, and 873 * sets it into that. Unfortunately there are keyboards that can be switched 874 * to Set 3, but don't work well in that (BTC Multimedia ...) 875 */ 876 877 static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra) 878 { 879 struct ps2dev *ps2dev = &atkbd->ps2dev; 880 unsigned char param[2]; 881 882 atkbd->extra = false; 883 /* 884 * For known special keyboards we can go ahead and set the correct set. 885 * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and 886 * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards. 887 */ 888 889 if (atkbd->translated) 890 return 2; 891 892 if (atkbd->id == 0xaca1) { 893 param[0] = 3; 894 ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET); 895 return 3; 896 } 897 898 if (allow_extra) { 899 param[0] = 0x71; 900 if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) { 901 atkbd->extra = true; 902 return 2; 903 } 904 } 905 906 if (atkbd_terminal) { 907 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MB); 908 return 3; 909 } 910 911 if (target_set != 3) 912 return 2; 913 914 if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) { 915 atkbd->id = param[0] << 8 | param[1]; 916 return 2; 917 } 918 919 param[0] = 3; 920 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET)) 921 return 2; 922 923 param[0] = 0; 924 if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET)) 925 return 2; 926 927 if (param[0] != 3) { 928 param[0] = 2; 929 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET)) 930 return 2; 931 } 932 933 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR); 934 935 return 3; 936 } 937 938 static int atkbd_reset_state(struct atkbd *atkbd) 939 { 940 struct ps2dev *ps2dev = &atkbd->ps2dev; 941 unsigned char param[1]; 942 943 /* 944 * Set the LEDs to a predefined state (all off). 945 */ 946 947 param[0] = 0; 948 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS)) 949 return -1; 950 951 /* 952 * Set autorepeat to fastest possible. 953 */ 954 955 param[0] = 0; 956 if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP)) 957 return -1; 958 959 return 0; 960 } 961 962 /* 963 * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a 964 * reboot. 965 */ 966 967 static void atkbd_cleanup(struct serio *serio) 968 { 969 struct atkbd *atkbd = atkbd_from_serio(serio); 970 971 atkbd_disable(atkbd); 972 ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_DEF); 973 } 974 975 976 /* 977 * atkbd_disconnect() closes and frees. 978 */ 979 980 static void atkbd_disconnect(struct serio *serio) 981 { 982 struct atkbd *atkbd = atkbd_from_serio(serio); 983 984 atkbd_disable(atkbd); 985 986 input_unregister_device(atkbd->dev); 987 988 /* 989 * Make sure we don't have a command in flight. 990 * Note that since atkbd->enabled is false event work will keep 991 * rescheduling itself until it gets canceled and will not try 992 * accessing freed input device or serio port. 993 */ 994 cancel_delayed_work_sync(&atkbd->event_work); 995 996 serio_close(serio); 997 serio_set_drvdata(serio, NULL); 998 kfree(atkbd); 999 } 1000 1001 /* 1002 * generate release events for the keycodes given in data 1003 */ 1004 static void atkbd_apply_forced_release_keylist(struct atkbd* atkbd, 1005 const void *data) 1006 { 1007 const unsigned int *keys = data; 1008 unsigned int i; 1009 1010 if (atkbd->set == 2) 1011 for (i = 0; keys[i] != -1U; i++) 1012 __set_bit(keys[i], atkbd->force_release_mask); 1013 } 1014 1015 /* 1016 * Most special keys (Fn+F?) on Dell laptops do not generate release 1017 * events so we have to do it ourselves. 1018 */ 1019 static unsigned int atkbd_dell_laptop_forced_release_keys[] = { 1020 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8f, 0x93, -1U 1021 }; 1022 1023 /* 1024 * Perform fixup for HP system that doesn't generate release 1025 * for its video switch 1026 */ 1027 static unsigned int atkbd_hp_forced_release_keys[] = { 1028 0x94, -1U 1029 }; 1030 1031 /* 1032 * Samsung NC10,NC20 with Fn+F? key release not working 1033 */ 1034 static unsigned int atkbd_samsung_forced_release_keys[] = { 1035 0x82, 0x83, 0x84, 0x86, 0x88, 0x89, 0xb3, 0xf7, 0xf9, -1U 1036 }; 1037 1038 /* 1039 * Amilo Pi 3525 key release for Fn+Volume keys not working 1040 */ 1041 static unsigned int atkbd_amilo_pi3525_forced_release_keys[] = { 1042 0x20, 0xa0, 0x2e, 0xae, 0x30, 0xb0, -1U 1043 }; 1044 1045 /* 1046 * Amilo Xi 3650 key release for light touch bar not working 1047 */ 1048 static unsigned int atkbd_amilo_xi3650_forced_release_keys[] = { 1049 0x67, 0xed, 0x90, 0xa2, 0x99, 0xa4, 0xae, 0xb0, -1U 1050 }; 1051 1052 /* 1053 * Soltech TA12 system with broken key release on volume keys and mute key 1054 */ 1055 static unsigned int atkdb_soltech_ta12_forced_release_keys[] = { 1056 0xa0, 0xae, 0xb0, -1U 1057 }; 1058 1059 /* 1060 * Many notebooks don't send key release event for volume up/down 1061 * keys, with key list below common among them 1062 */ 1063 static unsigned int atkbd_volume_forced_release_keys[] = { 1064 0xae, 0xb0, -1U 1065 }; 1066 1067 /* 1068 * OQO 01+ multimedia keys (64--66) generate e0 6x upon release whereas 1069 * they should be generating e4-e6 (0x80 | code). 1070 */ 1071 static unsigned int atkbd_oqo_01plus_scancode_fixup(struct atkbd *atkbd, 1072 unsigned int code) 1073 { 1074 if (atkbd->translated && atkbd->emul == 1 && 1075 (code == 0x64 || code == 0x65 || code == 0x66)) { 1076 atkbd->emul = 0; 1077 code |= 0x80; 1078 } 1079 1080 return code; 1081 } 1082 1083 static int atkbd_get_keymap_from_fwnode(struct atkbd *atkbd) 1084 { 1085 struct device *dev = &atkbd->ps2dev.serio->dev; 1086 int i, n; 1087 u32 *ptr; 1088 u16 scancode, keycode; 1089 1090 /* Parse "linux,keymap" property */ 1091 n = device_property_count_u32(dev, "linux,keymap"); 1092 if (n <= 0 || n > ATKBD_KEYMAP_SIZE) 1093 return -ENXIO; 1094 1095 ptr = kcalloc(n, sizeof(u32), GFP_KERNEL); 1096 if (!ptr) 1097 return -ENOMEM; 1098 1099 if (device_property_read_u32_array(dev, "linux,keymap", ptr, n)) { 1100 dev_err(dev, "problem parsing FW keymap property\n"); 1101 kfree(ptr); 1102 return -EINVAL; 1103 } 1104 1105 memset(atkbd->keycode, 0, sizeof(atkbd->keycode)); 1106 for (i = 0; i < n; i++) { 1107 scancode = SCANCODE(ptr[i]); 1108 keycode = KEYCODE(ptr[i]); 1109 atkbd->keycode[scancode] = keycode; 1110 } 1111 1112 kfree(ptr); 1113 return 0; 1114 } 1115 1116 /* 1117 * atkbd_set_keycode_table() initializes keyboard's keycode table 1118 * according to the selected scancode set 1119 */ 1120 1121 static void atkbd_set_keycode_table(struct atkbd *atkbd) 1122 { 1123 struct device *dev = &atkbd->ps2dev.serio->dev; 1124 unsigned int scancode; 1125 int i, j; 1126 1127 memset(atkbd->keycode, 0, sizeof(atkbd->keycode)); 1128 bitmap_zero(atkbd->force_release_mask, ATKBD_KEYMAP_SIZE); 1129 1130 if (!atkbd_get_keymap_from_fwnode(atkbd)) { 1131 dev_dbg(dev, "Using FW keymap\n"); 1132 } else if (atkbd->translated) { 1133 for (i = 0; i < 128; i++) { 1134 scancode = atkbd_unxlate_table[i]; 1135 atkbd->keycode[i] = atkbd_set2_keycode[scancode]; 1136 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80]; 1137 if (atkbd->scroll) 1138 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++) 1139 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2) 1140 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode; 1141 } 1142 } else if (atkbd->set == 3) { 1143 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode)); 1144 } else { 1145 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode)); 1146 1147 if (atkbd->scroll) 1148 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) { 1149 scancode = atkbd_scroll_keys[i].set2; 1150 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode; 1151 } 1152 } 1153 1154 /* 1155 * HANGEUL and HANJA keys do not send release events so we need to 1156 * generate such events ourselves 1157 */ 1158 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL); 1159 atkbd->keycode[scancode] = KEY_HANGEUL; 1160 __set_bit(scancode, atkbd->force_release_mask); 1161 1162 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA); 1163 atkbd->keycode[scancode] = KEY_HANJA; 1164 __set_bit(scancode, atkbd->force_release_mask); 1165 1166 /* 1167 * Perform additional fixups 1168 */ 1169 if (atkbd_platform_fixup) 1170 atkbd_platform_fixup(atkbd, atkbd_platform_fixup_data); 1171 } 1172 1173 /* 1174 * atkbd_set_device_attrs() sets up keyboard's input device structure 1175 */ 1176 1177 static void atkbd_set_device_attrs(struct atkbd *atkbd) 1178 { 1179 struct input_dev *input_dev = atkbd->dev; 1180 int i; 1181 1182 if (atkbd->extra) 1183 snprintf(atkbd->name, sizeof(atkbd->name), 1184 "AT Set 2 Extra keyboard"); 1185 else 1186 snprintf(atkbd->name, sizeof(atkbd->name), 1187 "AT %s Set %d keyboard", 1188 atkbd->translated ? "Translated" : "Raw", atkbd->set); 1189 1190 snprintf(atkbd->phys, sizeof(atkbd->phys), 1191 "%s/input0", atkbd->ps2dev.serio->phys); 1192 1193 input_dev->name = atkbd->name; 1194 input_dev->phys = atkbd->phys; 1195 input_dev->id.bustype = BUS_I8042; 1196 input_dev->id.vendor = 0x0001; 1197 input_dev->id.product = atkbd->translated ? 1 : atkbd->set; 1198 input_dev->id.version = atkbd->id; 1199 input_dev->event = atkbd_event; 1200 input_dev->dev.parent = &atkbd->ps2dev.serio->dev; 1201 1202 input_set_drvdata(input_dev, atkbd); 1203 1204 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | 1205 BIT_MASK(EV_MSC); 1206 1207 if (atkbd->write) { 1208 input_dev->evbit[0] |= BIT_MASK(EV_LED); 1209 input_dev->ledbit[0] = BIT_MASK(LED_NUML) | 1210 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL); 1211 } 1212 1213 if (atkbd->extra) 1214 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) | 1215 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) | 1216 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC); 1217 1218 if (!atkbd->softrepeat) { 1219 input_dev->rep[REP_DELAY] = 250; 1220 input_dev->rep[REP_PERIOD] = 33; 1221 } 1222 1223 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) : 1224 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN); 1225 1226 if (atkbd->scroll) { 1227 input_dev->evbit[0] |= BIT_MASK(EV_REL); 1228 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) | 1229 BIT_MASK(REL_HWHEEL); 1230 __set_bit(BTN_MIDDLE, input_dev->keybit); 1231 } 1232 1233 input_dev->keycode = atkbd->keycode; 1234 input_dev->keycodesize = sizeof(unsigned short); 1235 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode); 1236 1237 for (i = 0; i < ATKBD_KEYMAP_SIZE; i++) { 1238 if (atkbd->keycode[i] != KEY_RESERVED && 1239 atkbd->keycode[i] != ATKBD_KEY_NULL && 1240 atkbd->keycode[i] < ATKBD_SPECIAL) { 1241 __set_bit(atkbd->keycode[i], input_dev->keybit); 1242 } 1243 } 1244 } 1245 1246 static void atkbd_parse_fwnode_data(struct serio *serio) 1247 { 1248 struct atkbd *atkbd = atkbd_from_serio(serio); 1249 struct device *dev = &serio->dev; 1250 int n; 1251 1252 /* Parse "function-row-physmap" property */ 1253 n = device_property_count_u32(dev, "function-row-physmap"); 1254 if (n > 0 && n <= VIVALDI_MAX_FUNCTION_ROW_KEYS && 1255 !device_property_read_u32_array(dev, "function-row-physmap", 1256 atkbd->vdata.function_row_physmap, 1257 n)) { 1258 atkbd->vdata.num_function_row_keys = n; 1259 dev_dbg(dev, "FW reported %d function-row key locations\n", n); 1260 } 1261 } 1262 1263 /* 1264 * atkbd_connect() is called when the serio module finds an interface 1265 * that isn't handled yet by an appropriate device driver. We check if 1266 * there is an AT keyboard out there and if yes, we register ourselves 1267 * to the input module. 1268 */ 1269 1270 static int atkbd_connect(struct serio *serio, struct serio_driver *drv) 1271 { 1272 struct atkbd *atkbd; 1273 struct input_dev *dev; 1274 int err = -ENOMEM; 1275 1276 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL); 1277 dev = input_allocate_device(); 1278 if (!atkbd || !dev) 1279 goto fail1; 1280 1281 atkbd->dev = dev; 1282 ps2_init(&atkbd->ps2dev, serio, 1283 atkbd_pre_receive_byte, atkbd_receive_byte); 1284 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work); 1285 mutex_init(&atkbd->mutex); 1286 1287 switch (serio->id.type) { 1288 1289 case SERIO_8042_XL: 1290 atkbd->translated = true; 1291 fallthrough; 1292 1293 case SERIO_8042: 1294 if (serio->write) 1295 atkbd->write = true; 1296 break; 1297 } 1298 1299 atkbd->softraw = atkbd_softraw; 1300 atkbd->softrepeat = atkbd_softrepeat; 1301 atkbd->scroll = atkbd_scroll; 1302 1303 if (atkbd->softrepeat) 1304 atkbd->softraw = true; 1305 1306 serio_set_drvdata(serio, atkbd); 1307 1308 err = serio_open(serio, drv); 1309 if (err) 1310 goto fail2; 1311 1312 if (atkbd->write) { 1313 1314 if (atkbd_probe(atkbd)) { 1315 err = -ENODEV; 1316 goto fail3; 1317 } 1318 1319 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra); 1320 atkbd_reset_state(atkbd); 1321 1322 } else { 1323 atkbd->set = 2; 1324 atkbd->id = 0xab00; 1325 } 1326 1327 atkbd_parse_fwnode_data(serio); 1328 1329 atkbd_set_keycode_table(atkbd); 1330 atkbd_set_device_attrs(atkbd); 1331 1332 atkbd_enable(atkbd); 1333 if (serio->write) 1334 atkbd_activate(atkbd); 1335 1336 err = input_register_device(atkbd->dev); 1337 if (err) 1338 goto fail3; 1339 1340 return 0; 1341 1342 fail3: serio_close(serio); 1343 fail2: serio_set_drvdata(serio, NULL); 1344 fail1: input_free_device(dev); 1345 kfree(atkbd); 1346 return err; 1347 } 1348 1349 /* 1350 * atkbd_reconnect() tries to restore keyboard into a sane state and is 1351 * most likely called on resume. 1352 */ 1353 1354 static int atkbd_reconnect(struct serio *serio) 1355 { 1356 struct atkbd *atkbd = atkbd_from_serio(serio); 1357 struct serio_driver *drv = serio->drv; 1358 int retval = -1; 1359 1360 if (!atkbd || !drv) { 1361 dev_dbg(&serio->dev, 1362 "reconnect request, but serio is disconnected, ignoring...\n"); 1363 return -1; 1364 } 1365 1366 mutex_lock(&atkbd->mutex); 1367 1368 atkbd_disable(atkbd); 1369 1370 if (atkbd->write) { 1371 if (atkbd_probe(atkbd)) 1372 goto out; 1373 1374 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra)) 1375 goto out; 1376 1377 /* 1378 * Restore LED state and repeat rate. While input core 1379 * will do this for us at resume time reconnect may happen 1380 * because user requested it via sysfs or simply because 1381 * keyboard was unplugged and plugged in again so we need 1382 * to do it ourselves here. 1383 */ 1384 atkbd_set_leds(atkbd); 1385 if (!atkbd->softrepeat) 1386 atkbd_set_repeat_rate(atkbd); 1387 1388 } 1389 1390 /* 1391 * Reset our state machine in case reconnect happened in the middle 1392 * of multi-byte scancode. 1393 */ 1394 atkbd->xl_bit = 0; 1395 atkbd->emul = 0; 1396 1397 atkbd_enable(atkbd); 1398 if (atkbd->write) 1399 atkbd_activate(atkbd); 1400 1401 retval = 0; 1402 1403 out: 1404 mutex_unlock(&atkbd->mutex); 1405 return retval; 1406 } 1407 1408 static const struct serio_device_id atkbd_serio_ids[] = { 1409 { 1410 .type = SERIO_8042, 1411 .proto = SERIO_ANY, 1412 .id = SERIO_ANY, 1413 .extra = SERIO_ANY, 1414 }, 1415 { 1416 .type = SERIO_8042_XL, 1417 .proto = SERIO_ANY, 1418 .id = SERIO_ANY, 1419 .extra = SERIO_ANY, 1420 }, 1421 { 1422 .type = SERIO_RS232, 1423 .proto = SERIO_PS2SER, 1424 .id = SERIO_ANY, 1425 .extra = SERIO_ANY, 1426 }, 1427 { 0 } 1428 }; 1429 1430 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids); 1431 1432 static struct serio_driver atkbd_drv = { 1433 .driver = { 1434 .name = "atkbd", 1435 .dev_groups = atkbd_attribute_groups, 1436 }, 1437 .description = DRIVER_DESC, 1438 .id_table = atkbd_serio_ids, 1439 .interrupt = ps2_interrupt, 1440 .connect = atkbd_connect, 1441 .reconnect = atkbd_reconnect, 1442 .disconnect = atkbd_disconnect, 1443 .cleanup = atkbd_cleanup, 1444 }; 1445 1446 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf, 1447 ssize_t (*handler)(struct atkbd *, char *)) 1448 { 1449 struct serio *serio = to_serio_port(dev); 1450 struct atkbd *atkbd = atkbd_from_serio(serio); 1451 1452 return handler(atkbd, buf); 1453 } 1454 1455 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count, 1456 ssize_t (*handler)(struct atkbd *, const char *, size_t)) 1457 { 1458 struct serio *serio = to_serio_port(dev); 1459 struct atkbd *atkbd = atkbd_from_serio(serio); 1460 int retval; 1461 1462 retval = mutex_lock_interruptible(&atkbd->mutex); 1463 if (retval) 1464 return retval; 1465 1466 atkbd_disable(atkbd); 1467 retval = handler(atkbd, buf, count); 1468 atkbd_enable(atkbd); 1469 1470 mutex_unlock(&atkbd->mutex); 1471 1472 return retval; 1473 } 1474 1475 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf) 1476 { 1477 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0); 1478 } 1479 1480 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count) 1481 { 1482 struct input_dev *old_dev, *new_dev; 1483 unsigned int value; 1484 int err; 1485 bool old_extra; 1486 unsigned char old_set; 1487 1488 if (!atkbd->write) 1489 return -EIO; 1490 1491 err = kstrtouint(buf, 10, &value); 1492 if (err) 1493 return err; 1494 1495 if (value > 1) 1496 return -EINVAL; 1497 1498 if (atkbd->extra != value) { 1499 /* 1500 * Since device's properties will change we need to 1501 * unregister old device. But allocate and register 1502 * new one first to make sure we have it. 1503 */ 1504 old_dev = atkbd->dev; 1505 old_extra = atkbd->extra; 1506 old_set = atkbd->set; 1507 1508 new_dev = input_allocate_device(); 1509 if (!new_dev) 1510 return -ENOMEM; 1511 1512 atkbd->dev = new_dev; 1513 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value); 1514 atkbd_reset_state(atkbd); 1515 atkbd_activate(atkbd); 1516 atkbd_set_keycode_table(atkbd); 1517 atkbd_set_device_attrs(atkbd); 1518 1519 err = input_register_device(atkbd->dev); 1520 if (err) { 1521 input_free_device(new_dev); 1522 1523 atkbd->dev = old_dev; 1524 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra); 1525 atkbd_set_keycode_table(atkbd); 1526 atkbd_set_device_attrs(atkbd); 1527 1528 return err; 1529 } 1530 input_unregister_device(old_dev); 1531 1532 } 1533 return count; 1534 } 1535 1536 static ssize_t atkbd_show_force_release(struct atkbd *atkbd, char *buf) 1537 { 1538 size_t len = scnprintf(buf, PAGE_SIZE - 1, "%*pbl", 1539 ATKBD_KEYMAP_SIZE, atkbd->force_release_mask); 1540 1541 buf[len++] = '\n'; 1542 buf[len] = '\0'; 1543 1544 return len; 1545 } 1546 1547 static ssize_t atkbd_set_force_release(struct atkbd *atkbd, 1548 const char *buf, size_t count) 1549 { 1550 /* 64 bytes on stack should be acceptable */ 1551 DECLARE_BITMAP(new_mask, ATKBD_KEYMAP_SIZE); 1552 int err; 1553 1554 err = bitmap_parselist(buf, new_mask, ATKBD_KEYMAP_SIZE); 1555 if (err) 1556 return err; 1557 1558 memcpy(atkbd->force_release_mask, new_mask, sizeof(atkbd->force_release_mask)); 1559 return count; 1560 } 1561 1562 1563 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf) 1564 { 1565 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0); 1566 } 1567 1568 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count) 1569 { 1570 struct input_dev *old_dev, *new_dev; 1571 unsigned int value; 1572 int err; 1573 bool old_scroll; 1574 1575 err = kstrtouint(buf, 10, &value); 1576 if (err) 1577 return err; 1578 1579 if (value > 1) 1580 return -EINVAL; 1581 1582 if (atkbd->scroll != value) { 1583 old_dev = atkbd->dev; 1584 old_scroll = atkbd->scroll; 1585 1586 new_dev = input_allocate_device(); 1587 if (!new_dev) 1588 return -ENOMEM; 1589 1590 atkbd->dev = new_dev; 1591 atkbd->scroll = value; 1592 atkbd_set_keycode_table(atkbd); 1593 atkbd_set_device_attrs(atkbd); 1594 1595 err = input_register_device(atkbd->dev); 1596 if (err) { 1597 input_free_device(new_dev); 1598 1599 atkbd->scroll = old_scroll; 1600 atkbd->dev = old_dev; 1601 atkbd_set_keycode_table(atkbd); 1602 atkbd_set_device_attrs(atkbd); 1603 1604 return err; 1605 } 1606 input_unregister_device(old_dev); 1607 } 1608 return count; 1609 } 1610 1611 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf) 1612 { 1613 return sprintf(buf, "%d\n", atkbd->set); 1614 } 1615 1616 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count) 1617 { 1618 struct input_dev *old_dev, *new_dev; 1619 unsigned int value; 1620 int err; 1621 unsigned char old_set; 1622 bool old_extra; 1623 1624 if (!atkbd->write) 1625 return -EIO; 1626 1627 err = kstrtouint(buf, 10, &value); 1628 if (err) 1629 return err; 1630 1631 if (value != 2 && value != 3) 1632 return -EINVAL; 1633 1634 if (atkbd->set != value) { 1635 old_dev = atkbd->dev; 1636 old_extra = atkbd->extra; 1637 old_set = atkbd->set; 1638 1639 new_dev = input_allocate_device(); 1640 if (!new_dev) 1641 return -ENOMEM; 1642 1643 atkbd->dev = new_dev; 1644 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra); 1645 atkbd_reset_state(atkbd); 1646 atkbd_activate(atkbd); 1647 atkbd_set_keycode_table(atkbd); 1648 atkbd_set_device_attrs(atkbd); 1649 1650 err = input_register_device(atkbd->dev); 1651 if (err) { 1652 input_free_device(new_dev); 1653 1654 atkbd->dev = old_dev; 1655 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra); 1656 atkbd_set_keycode_table(atkbd); 1657 atkbd_set_device_attrs(atkbd); 1658 1659 return err; 1660 } 1661 input_unregister_device(old_dev); 1662 } 1663 return count; 1664 } 1665 1666 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf) 1667 { 1668 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0); 1669 } 1670 1671 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count) 1672 { 1673 struct input_dev *old_dev, *new_dev; 1674 unsigned int value; 1675 int err; 1676 bool old_softrepeat, old_softraw; 1677 1678 if (!atkbd->write) 1679 return -EIO; 1680 1681 err = kstrtouint(buf, 10, &value); 1682 if (err) 1683 return err; 1684 1685 if (value > 1) 1686 return -EINVAL; 1687 1688 if (atkbd->softrepeat != value) { 1689 old_dev = atkbd->dev; 1690 old_softrepeat = atkbd->softrepeat; 1691 old_softraw = atkbd->softraw; 1692 1693 new_dev = input_allocate_device(); 1694 if (!new_dev) 1695 return -ENOMEM; 1696 1697 atkbd->dev = new_dev; 1698 atkbd->softrepeat = value; 1699 if (atkbd->softrepeat) 1700 atkbd->softraw = true; 1701 atkbd_set_device_attrs(atkbd); 1702 1703 err = input_register_device(atkbd->dev); 1704 if (err) { 1705 input_free_device(new_dev); 1706 1707 atkbd->dev = old_dev; 1708 atkbd->softrepeat = old_softrepeat; 1709 atkbd->softraw = old_softraw; 1710 atkbd_set_device_attrs(atkbd); 1711 1712 return err; 1713 } 1714 input_unregister_device(old_dev); 1715 } 1716 return count; 1717 } 1718 1719 1720 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf) 1721 { 1722 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0); 1723 } 1724 1725 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count) 1726 { 1727 struct input_dev *old_dev, *new_dev; 1728 unsigned int value; 1729 int err; 1730 bool old_softraw; 1731 1732 err = kstrtouint(buf, 10, &value); 1733 if (err) 1734 return err; 1735 1736 if (value > 1) 1737 return -EINVAL; 1738 1739 if (atkbd->softraw != value) { 1740 old_dev = atkbd->dev; 1741 old_softraw = atkbd->softraw; 1742 1743 new_dev = input_allocate_device(); 1744 if (!new_dev) 1745 return -ENOMEM; 1746 1747 atkbd->dev = new_dev; 1748 atkbd->softraw = value; 1749 atkbd_set_device_attrs(atkbd); 1750 1751 err = input_register_device(atkbd->dev); 1752 if (err) { 1753 input_free_device(new_dev); 1754 1755 atkbd->dev = old_dev; 1756 atkbd->softraw = old_softraw; 1757 atkbd_set_device_attrs(atkbd); 1758 1759 return err; 1760 } 1761 input_unregister_device(old_dev); 1762 } 1763 return count; 1764 } 1765 1766 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf) 1767 { 1768 return sprintf(buf, "%lu\n", atkbd->err_count); 1769 } 1770 1771 static int __init atkbd_setup_forced_release(const struct dmi_system_id *id) 1772 { 1773 atkbd_platform_fixup = atkbd_apply_forced_release_keylist; 1774 atkbd_platform_fixup_data = id->driver_data; 1775 1776 return 1; 1777 } 1778 1779 static int __init atkbd_setup_scancode_fixup(const struct dmi_system_id *id) 1780 { 1781 atkbd_platform_scancode_fixup = id->driver_data; 1782 1783 return 1; 1784 } 1785 1786 static int __init atkbd_deactivate_fixup(const struct dmi_system_id *id) 1787 { 1788 atkbd_skip_deactivate = true; 1789 return 1; 1790 } 1791 1792 /* 1793 * NOTE: do not add any more "force release" quirks to this table. The 1794 * task of adjusting list of keys that should be "released" automatically 1795 * by the driver is now delegated to userspace tools, such as udev, so 1796 * submit such quirks there. 1797 */ 1798 static const struct dmi_system_id atkbd_dmi_quirk_table[] __initconst = { 1799 { 1800 .matches = { 1801 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 1802 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */ 1803 }, 1804 .callback = atkbd_setup_forced_release, 1805 .driver_data = atkbd_dell_laptop_forced_release_keys, 1806 }, 1807 { 1808 .matches = { 1809 DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"), 1810 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */ 1811 }, 1812 .callback = atkbd_setup_forced_release, 1813 .driver_data = atkbd_dell_laptop_forced_release_keys, 1814 }, 1815 { 1816 .matches = { 1817 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1818 DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"), 1819 }, 1820 .callback = atkbd_setup_forced_release, 1821 .driver_data = atkbd_hp_forced_release_keys, 1822 }, 1823 { 1824 .matches = { 1825 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1826 DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion ZV6100"), 1827 }, 1828 .callback = atkbd_setup_forced_release, 1829 .driver_data = atkbd_volume_forced_release_keys, 1830 }, 1831 { 1832 .matches = { 1833 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1834 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4000"), 1835 }, 1836 .callback = atkbd_setup_forced_release, 1837 .driver_data = atkbd_volume_forced_release_keys, 1838 }, 1839 { 1840 .matches = { 1841 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1842 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4100"), 1843 }, 1844 .callback = atkbd_setup_forced_release, 1845 .driver_data = atkbd_volume_forced_release_keys, 1846 }, 1847 { 1848 .matches = { 1849 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1850 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4200"), 1851 }, 1852 .callback = atkbd_setup_forced_release, 1853 .driver_data = atkbd_volume_forced_release_keys, 1854 }, 1855 { 1856 /* Inventec Symphony */ 1857 .matches = { 1858 DMI_MATCH(DMI_SYS_VENDOR, "INVENTEC"), 1859 DMI_MATCH(DMI_PRODUCT_NAME, "SYMPHONY 6.0/7.0"), 1860 }, 1861 .callback = atkbd_setup_forced_release, 1862 .driver_data = atkbd_volume_forced_release_keys, 1863 }, 1864 { 1865 /* Samsung NC10 */ 1866 .matches = { 1867 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), 1868 DMI_MATCH(DMI_PRODUCT_NAME, "NC10"), 1869 }, 1870 .callback = atkbd_setup_forced_release, 1871 .driver_data = atkbd_samsung_forced_release_keys, 1872 }, 1873 { 1874 /* Samsung NC20 */ 1875 .matches = { 1876 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), 1877 DMI_MATCH(DMI_PRODUCT_NAME, "NC20"), 1878 }, 1879 .callback = atkbd_setup_forced_release, 1880 .driver_data = atkbd_samsung_forced_release_keys, 1881 }, 1882 { 1883 /* Samsung SQ45S70S */ 1884 .matches = { 1885 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), 1886 DMI_MATCH(DMI_PRODUCT_NAME, "SQ45S70S"), 1887 }, 1888 .callback = atkbd_setup_forced_release, 1889 .driver_data = atkbd_samsung_forced_release_keys, 1890 }, 1891 { 1892 /* Fujitsu Amilo PA 1510 */ 1893 .matches = { 1894 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1895 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 1510"), 1896 }, 1897 .callback = atkbd_setup_forced_release, 1898 .driver_data = atkbd_volume_forced_release_keys, 1899 }, 1900 { 1901 /* Fujitsu Amilo Pi 3525 */ 1902 .matches = { 1903 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1904 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 3525"), 1905 }, 1906 .callback = atkbd_setup_forced_release, 1907 .driver_data = atkbd_amilo_pi3525_forced_release_keys, 1908 }, 1909 { 1910 /* Fujitsu Amilo Xi 3650 */ 1911 .matches = { 1912 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1913 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 3650"), 1914 }, 1915 .callback = atkbd_setup_forced_release, 1916 .driver_data = atkbd_amilo_xi3650_forced_release_keys, 1917 }, 1918 { 1919 .matches = { 1920 DMI_MATCH(DMI_SYS_VENDOR, "Soltech Corporation"), 1921 DMI_MATCH(DMI_PRODUCT_NAME, "TA12"), 1922 }, 1923 .callback = atkbd_setup_forced_release, 1924 .driver_data = atkdb_soltech_ta12_forced_release_keys, 1925 }, 1926 { 1927 /* OQO Model 01+ */ 1928 .matches = { 1929 DMI_MATCH(DMI_SYS_VENDOR, "OQO"), 1930 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPTO"), 1931 }, 1932 .callback = atkbd_setup_scancode_fixup, 1933 .driver_data = atkbd_oqo_01plus_scancode_fixup, 1934 }, 1935 { 1936 .matches = { 1937 DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"), 1938 }, 1939 .callback = atkbd_deactivate_fixup, 1940 }, 1941 { } 1942 }; 1943 1944 static int __init atkbd_init(void) 1945 { 1946 dmi_check_system(atkbd_dmi_quirk_table); 1947 1948 return serio_register_driver(&atkbd_drv); 1949 } 1950 1951 static void __exit atkbd_exit(void) 1952 { 1953 serio_unregister_driver(&atkbd_drv); 1954 } 1955 1956 module_init(atkbd_init); 1957 module_exit(atkbd_exit); 1958