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/serio.h> 23 #include <linux/workqueue.h> 24 #include <linux/libps2.h> 25 #include <linux/mutex.h> 26 #include <linux/dmi.h> 27 28 #define DRIVER_DESC "AT and PS/2 keyboard driver" 29 30 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>"); 31 MODULE_DESCRIPTION(DRIVER_DESC); 32 MODULE_LICENSE("GPL"); 33 34 static int atkbd_set = 2; 35 module_param_named(set, atkbd_set, int, 0); 36 MODULE_PARM_DESC(set, "Select keyboard code set (2 = default, 3 = PS/2 native)"); 37 38 #if defined(__i386__) || defined(__x86_64__) || defined(__hppa__) 39 static bool atkbd_reset; 40 #else 41 static bool atkbd_reset = true; 42 #endif 43 module_param_named(reset, atkbd_reset, bool, 0); 44 MODULE_PARM_DESC(reset, "Reset keyboard during initialization"); 45 46 static bool atkbd_softrepeat; 47 module_param_named(softrepeat, atkbd_softrepeat, bool, 0); 48 MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat"); 49 50 static bool atkbd_softraw = true; 51 module_param_named(softraw, atkbd_softraw, bool, 0); 52 MODULE_PARM_DESC(softraw, "Use software generated rawmode"); 53 54 static bool atkbd_scroll; 55 module_param_named(scroll, atkbd_scroll, bool, 0); 56 MODULE_PARM_DESC(scroll, "Enable scroll-wheel on MS Office and similar keyboards"); 57 58 static bool atkbd_extra; 59 module_param_named(extra, atkbd_extra, bool, 0); 60 MODULE_PARM_DESC(extra, "Enable extra LEDs and keys on IBM RapidAcces, EzKey and similar keyboards"); 61 62 static bool atkbd_terminal; 63 module_param_named(terminal, atkbd_terminal, bool, 0); 64 MODULE_PARM_DESC(terminal, "Enable break codes on an IBM Terminal keyboard connected via AT/PS2"); 65 66 /* 67 * Scancode to keycode tables. These are just the default setting, and 68 * are loadable via a userland utility. 69 */ 70 71 #define ATKBD_KEYMAP_SIZE 512 72 73 static const unsigned short atkbd_set2_keycode[ATKBD_KEYMAP_SIZE] = { 74 75 #ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES 76 77 /* XXX: need a more general approach */ 78 79 #include "hpps2atkbd.h" /* include the keyboard scancodes */ 80 81 #else 82 0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117, 83 0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0, 84 0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183, 85 0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185, 86 0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0, 87 0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85, 88 0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0, 89 82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99, 90 91 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 92 217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125, 93 173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127, 94 159, 0,115, 0,164, 0, 0,116,158, 0,172,166, 0, 0, 0,142, 95 157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0, 96 226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0, 97 0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112, 98 110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0, 99 100 0, 0, 0, 65, 99, 101 #endif 102 }; 103 104 static const unsigned short atkbd_set3_keycode[ATKBD_KEYMAP_SIZE] = { 105 106 0, 0, 0, 0, 0, 0, 0, 59, 1,138,128,129,130, 15, 41, 60, 107 131, 29, 42, 86, 58, 16, 2, 61,133, 56, 44, 31, 30, 17, 3, 62, 108 134, 46, 45, 32, 18, 5, 4, 63,135, 57, 47, 33, 20, 19, 6, 64, 109 136, 49, 48, 35, 34, 21, 7, 65,137,100, 50, 36, 22, 8, 9, 66, 110 125, 51, 37, 23, 24, 11, 10, 67,126, 52, 53, 38, 39, 25, 12, 68, 111 113,114, 40, 43, 26, 13, 87, 99, 97, 54, 28, 27, 43, 43, 88, 70, 112 108,105,119,103,111,107, 14,110, 0, 79,106, 75, 71,109,102,104, 113 82, 83, 80, 76, 77, 72, 69, 98, 0, 96, 81, 0, 78, 73, 55,183, 114 115 184,185,186,187, 74, 94, 92, 93, 0, 0, 0,125,126,127,112, 0, 116 0,139,172,163,165,115,152,172,166,140,160,154,113,114,167,168, 117 148,149,147,140 118 }; 119 120 static const unsigned short atkbd_unxlate_table[128] = { 121 0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13, 122 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27, 123 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42, 124 50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3, 125 11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105, 126 114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63, 127 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111, 128 19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110 129 }; 130 131 #define ATKBD_CMD_SETLEDS 0x10ed 132 #define ATKBD_CMD_GSCANSET 0x11f0 133 #define ATKBD_CMD_SSCANSET 0x10f0 134 #define ATKBD_CMD_GETID 0x02f2 135 #define ATKBD_CMD_SETREP 0x10f3 136 #define ATKBD_CMD_ENABLE 0x00f4 137 #define ATKBD_CMD_RESET_DIS 0x00f5 /* Reset to defaults and disable */ 138 #define ATKBD_CMD_RESET_DEF 0x00f6 /* Reset to defaults */ 139 #define ATKBD_CMD_SETALL_MB 0x00f8 /* Set all keys to give break codes */ 140 #define ATKBD_CMD_SETALL_MBR 0x00fa /* ... and repeat */ 141 #define ATKBD_CMD_RESET_BAT 0x02ff 142 #define ATKBD_CMD_RESEND 0x00fe 143 #define ATKBD_CMD_EX_ENABLE 0x10ea 144 #define ATKBD_CMD_EX_SETLEDS 0x20eb 145 #define ATKBD_CMD_OK_GETID 0x02e8 146 147 #define ATKBD_RET_ACK 0xfa 148 #define ATKBD_RET_NAK 0xfe 149 #define ATKBD_RET_BAT 0xaa 150 #define ATKBD_RET_EMUL0 0xe0 151 #define ATKBD_RET_EMUL1 0xe1 152 #define ATKBD_RET_RELEASE 0xf0 153 #define ATKBD_RET_HANJA 0xf1 154 #define ATKBD_RET_HANGEUL 0xf2 155 #define ATKBD_RET_ERR 0xff 156 157 #define ATKBD_KEY_UNKNOWN 0 158 #define ATKBD_KEY_NULL 255 159 160 #define ATKBD_SCR_1 0xfffe 161 #define ATKBD_SCR_2 0xfffd 162 #define ATKBD_SCR_4 0xfffc 163 #define ATKBD_SCR_8 0xfffb 164 #define ATKBD_SCR_CLICK 0xfffa 165 #define ATKBD_SCR_LEFT 0xfff9 166 #define ATKBD_SCR_RIGHT 0xfff8 167 168 #define ATKBD_SPECIAL ATKBD_SCR_RIGHT 169 170 #define ATKBD_LED_EVENT_BIT 0 171 #define ATKBD_REP_EVENT_BIT 1 172 173 #define ATKBD_XL_ERR 0x01 174 #define ATKBD_XL_BAT 0x02 175 #define ATKBD_XL_ACK 0x04 176 #define ATKBD_XL_NAK 0x08 177 #define ATKBD_XL_HANGEUL 0x10 178 #define ATKBD_XL_HANJA 0x20 179 180 static const struct { 181 unsigned short keycode; 182 unsigned char set2; 183 } atkbd_scroll_keys[] = { 184 { ATKBD_SCR_1, 0xc5 }, 185 { ATKBD_SCR_2, 0x9d }, 186 { ATKBD_SCR_4, 0xa4 }, 187 { ATKBD_SCR_8, 0x9b }, 188 { ATKBD_SCR_CLICK, 0xe0 }, 189 { ATKBD_SCR_LEFT, 0xcb }, 190 { ATKBD_SCR_RIGHT, 0xd2 }, 191 }; 192 193 /* 194 * The atkbd control structure 195 */ 196 197 struct atkbd { 198 199 struct ps2dev ps2dev; 200 struct input_dev *dev; 201 202 /* Written only during init */ 203 char name[64]; 204 char phys[32]; 205 206 unsigned short id; 207 unsigned short keycode[ATKBD_KEYMAP_SIZE]; 208 DECLARE_BITMAP(force_release_mask, ATKBD_KEYMAP_SIZE); 209 unsigned char set; 210 bool translated; 211 bool extra; 212 bool write; 213 bool softrepeat; 214 bool softraw; 215 bool scroll; 216 bool enabled; 217 218 /* Accessed only from interrupt */ 219 unsigned char emul; 220 bool resend; 221 bool release; 222 unsigned long xl_bit; 223 unsigned int last; 224 unsigned long time; 225 unsigned long err_count; 226 227 struct delayed_work event_work; 228 unsigned long event_jiffies; 229 unsigned long event_mask; 230 231 /* Serializes reconnect(), attr->set() and event work */ 232 struct mutex mutex; 233 }; 234 235 /* 236 * System-specific keymap fixup routine 237 */ 238 static void (*atkbd_platform_fixup)(struct atkbd *, const void *data); 239 static void *atkbd_platform_fixup_data; 240 static unsigned int (*atkbd_platform_scancode_fixup)(struct atkbd *, unsigned int); 241 242 /* 243 * Certain keyboards to not like ATKBD_CMD_RESET_DIS and stop responding 244 * to many commands until full reset (ATKBD_CMD_RESET_BAT) is performed. 245 */ 246 static bool atkbd_skip_deactivate; 247 248 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf, 249 ssize_t (*handler)(struct atkbd *, char *)); 250 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count, 251 ssize_t (*handler)(struct atkbd *, const char *, size_t)); 252 #define ATKBD_DEFINE_ATTR(_name) \ 253 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \ 254 static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \ 255 static ssize_t atkbd_do_show_##_name(struct device *d, \ 256 struct device_attribute *attr, char *b) \ 257 { \ 258 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \ 259 } \ 260 static ssize_t atkbd_do_set_##_name(struct device *d, \ 261 struct device_attribute *attr, const char *b, size_t s) \ 262 { \ 263 return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name); \ 264 } \ 265 static struct device_attribute atkbd_attr_##_name = \ 266 __ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name); 267 268 ATKBD_DEFINE_ATTR(extra); 269 ATKBD_DEFINE_ATTR(force_release); 270 ATKBD_DEFINE_ATTR(scroll); 271 ATKBD_DEFINE_ATTR(set); 272 ATKBD_DEFINE_ATTR(softrepeat); 273 ATKBD_DEFINE_ATTR(softraw); 274 275 #define ATKBD_DEFINE_RO_ATTR(_name) \ 276 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \ 277 static ssize_t atkbd_do_show_##_name(struct device *d, \ 278 struct device_attribute *attr, char *b) \ 279 { \ 280 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \ 281 } \ 282 static struct device_attribute atkbd_attr_##_name = \ 283 __ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL); 284 285 ATKBD_DEFINE_RO_ATTR(err_count); 286 287 static struct attribute *atkbd_attributes[] = { 288 &atkbd_attr_extra.attr, 289 &atkbd_attr_force_release.attr, 290 &atkbd_attr_scroll.attr, 291 &atkbd_attr_set.attr, 292 &atkbd_attr_softrepeat.attr, 293 &atkbd_attr_softraw.attr, 294 &atkbd_attr_err_count.attr, 295 NULL 296 }; 297 298 static struct attribute_group atkbd_attribute_group = { 299 .attrs = atkbd_attributes, 300 }; 301 302 static const unsigned int xl_table[] = { 303 ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK, 304 ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL, 305 }; 306 307 /* 308 * Checks if we should mangle the scancode to extract 'release' bit 309 * in translated mode. 310 */ 311 static bool atkbd_need_xlate(unsigned long xl_bit, unsigned char code) 312 { 313 int i; 314 315 if (code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1) 316 return false; 317 318 for (i = 0; i < ARRAY_SIZE(xl_table); i++) 319 if (code == xl_table[i]) 320 return test_bit(i, &xl_bit); 321 322 return true; 323 } 324 325 /* 326 * Calculates new value of xl_bit so the driver can distinguish 327 * between make/break pair of scancodes for select keys and PS/2 328 * protocol responses. 329 */ 330 static void atkbd_calculate_xl_bit(struct atkbd *atkbd, unsigned char code) 331 { 332 int i; 333 334 for (i = 0; i < ARRAY_SIZE(xl_table); i++) { 335 if (!((code ^ xl_table[i]) & 0x7f)) { 336 if (code & 0x80) 337 __clear_bit(i, &atkbd->xl_bit); 338 else 339 __set_bit(i, &atkbd->xl_bit); 340 break; 341 } 342 } 343 } 344 345 /* 346 * Encode the scancode, 0xe0 prefix, and high bit into a single integer, 347 * keeping kernel 2.4 compatibility for set 2 348 */ 349 static unsigned int atkbd_compat_scancode(struct atkbd *atkbd, unsigned int code) 350 { 351 if (atkbd->set == 3) { 352 if (atkbd->emul == 1) 353 code |= 0x100; 354 } else { 355 code = (code & 0x7f) | ((code & 0x80) << 1); 356 if (atkbd->emul == 1) 357 code |= 0x80; 358 } 359 360 return code; 361 } 362 363 /* 364 * atkbd_interrupt(). Here takes place processing of data received from 365 * the keyboard into events. 366 */ 367 368 static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data, 369 unsigned int flags) 370 { 371 struct atkbd *atkbd = serio_get_drvdata(serio); 372 struct input_dev *dev = atkbd->dev; 373 unsigned int code = data; 374 int scroll = 0, hscroll = 0, click = -1; 375 int value; 376 unsigned short keycode; 377 378 dev_dbg(&serio->dev, "Received %02x flags %02x\n", data, flags); 379 380 #if !defined(__i386__) && !defined (__x86_64__) 381 if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) { 382 dev_warn(&serio->dev, "Frame/parity error: %02x\n", flags); 383 serio_write(serio, ATKBD_CMD_RESEND); 384 atkbd->resend = true; 385 goto out; 386 } 387 388 if (!flags && data == ATKBD_RET_ACK) 389 atkbd->resend = false; 390 #endif 391 392 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_ACK)) 393 if (ps2_handle_ack(&atkbd->ps2dev, data)) 394 goto out; 395 396 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_CMD)) 397 if (ps2_handle_response(&atkbd->ps2dev, data)) 398 goto out; 399 400 pm_wakeup_event(&serio->dev, 0); 401 402 if (!atkbd->enabled) 403 goto out; 404 405 input_event(dev, EV_MSC, MSC_RAW, code); 406 407 if (atkbd_platform_scancode_fixup) 408 code = atkbd_platform_scancode_fixup(atkbd, code); 409 410 if (atkbd->translated) { 411 412 if (atkbd->emul || atkbd_need_xlate(atkbd->xl_bit, code)) { 413 atkbd->release = code >> 7; 414 code &= 0x7f; 415 } 416 417 if (!atkbd->emul) 418 atkbd_calculate_xl_bit(atkbd, data); 419 } 420 421 switch (code) { 422 case ATKBD_RET_BAT: 423 atkbd->enabled = false; 424 serio_reconnect(atkbd->ps2dev.serio); 425 goto out; 426 case ATKBD_RET_EMUL0: 427 atkbd->emul = 1; 428 goto out; 429 case ATKBD_RET_EMUL1: 430 atkbd->emul = 2; 431 goto out; 432 case ATKBD_RET_RELEASE: 433 atkbd->release = true; 434 goto out; 435 case ATKBD_RET_ACK: 436 case ATKBD_RET_NAK: 437 if (printk_ratelimit()) 438 dev_warn(&serio->dev, 439 "Spurious %s on %s. " 440 "Some program might be trying to access hardware directly.\n", 441 data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys); 442 goto out; 443 case ATKBD_RET_ERR: 444 atkbd->err_count++; 445 dev_dbg(&serio->dev, "Keyboard on %s reports too many keys pressed.\n", 446 serio->phys); 447 goto out; 448 } 449 450 code = atkbd_compat_scancode(atkbd, code); 451 452 if (atkbd->emul && --atkbd->emul) 453 goto out; 454 455 keycode = atkbd->keycode[code]; 456 457 if (!(atkbd->release && test_bit(code, atkbd->force_release_mask))) 458 if (keycode != ATKBD_KEY_NULL) 459 input_event(dev, EV_MSC, MSC_SCAN, code); 460 461 switch (keycode) { 462 case ATKBD_KEY_NULL: 463 break; 464 case ATKBD_KEY_UNKNOWN: 465 dev_warn(&serio->dev, 466 "Unknown key %s (%s set %d, code %#x on %s).\n", 467 atkbd->release ? "released" : "pressed", 468 atkbd->translated ? "translated" : "raw", 469 atkbd->set, code, serio->phys); 470 dev_warn(&serio->dev, 471 "Use 'setkeycodes %s%02x <keycode>' to make it known.\n", 472 code & 0x80 ? "e0" : "", code & 0x7f); 473 input_sync(dev); 474 break; 475 case ATKBD_SCR_1: 476 scroll = 1; 477 break; 478 case ATKBD_SCR_2: 479 scroll = 2; 480 break; 481 case ATKBD_SCR_4: 482 scroll = 4; 483 break; 484 case ATKBD_SCR_8: 485 scroll = 8; 486 break; 487 case ATKBD_SCR_CLICK: 488 click = !atkbd->release; 489 break; 490 case ATKBD_SCR_LEFT: 491 hscroll = -1; 492 break; 493 case ATKBD_SCR_RIGHT: 494 hscroll = 1; 495 break; 496 default: 497 if (atkbd->release) { 498 value = 0; 499 atkbd->last = 0; 500 } else if (!atkbd->softrepeat && test_bit(keycode, dev->key)) { 501 /* Workaround Toshiba laptop multiple keypress */ 502 value = time_before(jiffies, atkbd->time) && atkbd->last == code ? 1 : 2; 503 } else { 504 value = 1; 505 atkbd->last = code; 506 atkbd->time = jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]) / 2; 507 } 508 509 input_event(dev, EV_KEY, keycode, value); 510 input_sync(dev); 511 512 if (value && test_bit(code, atkbd->force_release_mask)) { 513 input_event(dev, EV_MSC, MSC_SCAN, code); 514 input_report_key(dev, keycode, 0); 515 input_sync(dev); 516 } 517 } 518 519 if (atkbd->scroll) { 520 if (click != -1) 521 input_report_key(dev, BTN_MIDDLE, click); 522 input_report_rel(dev, REL_WHEEL, 523 atkbd->release ? -scroll : scroll); 524 input_report_rel(dev, REL_HWHEEL, hscroll); 525 input_sync(dev); 526 } 527 528 atkbd->release = false; 529 out: 530 return IRQ_HANDLED; 531 } 532 533 static int atkbd_set_repeat_rate(struct atkbd *atkbd) 534 { 535 const short period[32] = 536 { 33, 37, 42, 46, 50, 54, 58, 63, 67, 75, 83, 92, 100, 109, 116, 125, 537 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 }; 538 const short delay[4] = 539 { 250, 500, 750, 1000 }; 540 541 struct input_dev *dev = atkbd->dev; 542 unsigned char param; 543 int i = 0, j = 0; 544 545 while (i < ARRAY_SIZE(period) - 1 && period[i] < dev->rep[REP_PERIOD]) 546 i++; 547 dev->rep[REP_PERIOD] = period[i]; 548 549 while (j < ARRAY_SIZE(delay) - 1 && delay[j] < dev->rep[REP_DELAY]) 550 j++; 551 dev->rep[REP_DELAY] = delay[j]; 552 553 param = i | (j << 5); 554 return ps2_command(&atkbd->ps2dev, ¶m, ATKBD_CMD_SETREP); 555 } 556 557 static int atkbd_set_leds(struct atkbd *atkbd) 558 { 559 struct input_dev *dev = atkbd->dev; 560 unsigned char param[2]; 561 562 param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0) 563 | (test_bit(LED_NUML, dev->led) ? 2 : 0) 564 | (test_bit(LED_CAPSL, dev->led) ? 4 : 0); 565 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS)) 566 return -1; 567 568 if (atkbd->extra) { 569 param[0] = 0; 570 param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0) 571 | (test_bit(LED_SLEEP, dev->led) ? 0x02 : 0) 572 | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0) 573 | (test_bit(LED_MISC, dev->led) ? 0x10 : 0) 574 | (test_bit(LED_MUTE, dev->led) ? 0x20 : 0); 575 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS)) 576 return -1; 577 } 578 579 return 0; 580 } 581 582 /* 583 * atkbd_event_work() is used to complete processing of events that 584 * can not be processed by input_event() which is often called from 585 * interrupt context. 586 */ 587 588 static void atkbd_event_work(struct work_struct *work) 589 { 590 struct atkbd *atkbd = container_of(work, struct atkbd, event_work.work); 591 592 mutex_lock(&atkbd->mutex); 593 594 if (!atkbd->enabled) { 595 /* 596 * Serio ports are resumed asynchronously so while driver core 597 * thinks that device is already fully operational in reality 598 * it may not be ready yet. In this case we need to keep 599 * rescheduling till reconnect completes. 600 */ 601 schedule_delayed_work(&atkbd->event_work, 602 msecs_to_jiffies(100)); 603 } else { 604 if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask)) 605 atkbd_set_leds(atkbd); 606 607 if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask)) 608 atkbd_set_repeat_rate(atkbd); 609 } 610 611 mutex_unlock(&atkbd->mutex); 612 } 613 614 /* 615 * Schedule switch for execution. We need to throttle requests, 616 * otherwise keyboard may become unresponsive. 617 */ 618 static void atkbd_schedule_event_work(struct atkbd *atkbd, int event_bit) 619 { 620 unsigned long delay = msecs_to_jiffies(50); 621 622 if (time_after(jiffies, atkbd->event_jiffies + delay)) 623 delay = 0; 624 625 atkbd->event_jiffies = jiffies; 626 set_bit(event_bit, &atkbd->event_mask); 627 mb(); 628 schedule_delayed_work(&atkbd->event_work, delay); 629 } 630 631 /* 632 * Event callback from the input module. Events that change the state of 633 * the hardware are processed here. If action can not be performed in 634 * interrupt context it is offloaded to atkbd_event_work. 635 */ 636 637 static int atkbd_event(struct input_dev *dev, 638 unsigned int type, unsigned int code, int value) 639 { 640 struct atkbd *atkbd = input_get_drvdata(dev); 641 642 if (!atkbd->write) 643 return -1; 644 645 switch (type) { 646 647 case EV_LED: 648 atkbd_schedule_event_work(atkbd, ATKBD_LED_EVENT_BIT); 649 return 0; 650 651 case EV_REP: 652 if (!atkbd->softrepeat) 653 atkbd_schedule_event_work(atkbd, ATKBD_REP_EVENT_BIT); 654 return 0; 655 656 default: 657 return -1; 658 } 659 } 660 661 /* 662 * atkbd_enable() signals that interrupt handler is allowed to 663 * generate input events. 664 */ 665 666 static inline void atkbd_enable(struct atkbd *atkbd) 667 { 668 serio_pause_rx(atkbd->ps2dev.serio); 669 atkbd->enabled = true; 670 serio_continue_rx(atkbd->ps2dev.serio); 671 } 672 673 /* 674 * atkbd_disable() tells input handler that all incoming data except 675 * for ACKs and command response should be dropped. 676 */ 677 678 static inline void atkbd_disable(struct atkbd *atkbd) 679 { 680 serio_pause_rx(atkbd->ps2dev.serio); 681 atkbd->enabled = false; 682 serio_continue_rx(atkbd->ps2dev.serio); 683 } 684 685 static int atkbd_activate(struct atkbd *atkbd) 686 { 687 struct ps2dev *ps2dev = &atkbd->ps2dev; 688 689 /* 690 * Enable the keyboard to receive keystrokes. 691 */ 692 693 if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) { 694 dev_err(&ps2dev->serio->dev, 695 "Failed to enable keyboard on %s\n", 696 ps2dev->serio->phys); 697 return -1; 698 } 699 700 return 0; 701 } 702 703 /* 704 * atkbd_deactivate() resets and disables the keyboard from sending 705 * keystrokes. 706 */ 707 708 static void atkbd_deactivate(struct atkbd *atkbd) 709 { 710 struct ps2dev *ps2dev = &atkbd->ps2dev; 711 712 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_DIS)) 713 dev_err(&ps2dev->serio->dev, 714 "Failed to deactivate keyboard on %s\n", 715 ps2dev->serio->phys); 716 } 717 718 /* 719 * atkbd_probe() probes for an AT keyboard on a serio port. 720 */ 721 722 static int atkbd_probe(struct atkbd *atkbd) 723 { 724 struct ps2dev *ps2dev = &atkbd->ps2dev; 725 unsigned char param[2]; 726 727 /* 728 * Some systems, where the bit-twiddling when testing the io-lines of the 729 * controller may confuse the keyboard need a full reset of the keyboard. On 730 * these systems the BIOS also usually doesn't do it for us. 731 */ 732 733 if (atkbd_reset) 734 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT)) 735 dev_warn(&ps2dev->serio->dev, 736 "keyboard reset failed on %s\n", 737 ps2dev->serio->phys); 738 739 /* 740 * Then we check the keyboard ID. We should get 0xab83 under normal conditions. 741 * Some keyboards report different values, but the first byte is always 0xab or 742 * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this 743 * should make sure we don't try to set the LEDs on it. 744 */ 745 746 param[0] = param[1] = 0xa5; /* initialize with invalid values */ 747 if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) { 748 749 /* 750 * If the get ID command failed, we check if we can at least set the LEDs on 751 * the keyboard. This should work on every keyboard out there. It also turns 752 * the LEDs off, which we want anyway. 753 */ 754 param[0] = 0; 755 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS)) 756 return -1; 757 atkbd->id = 0xabba; 758 return 0; 759 } 760 761 if (!ps2_is_keyboard_id(param[0])) 762 return -1; 763 764 atkbd->id = (param[0] << 8) | param[1]; 765 766 if (atkbd->id == 0xaca1 && atkbd->translated) { 767 dev_err(&ps2dev->serio->dev, 768 "NCD terminal keyboards are only supported on non-translating controllers. " 769 "Use i8042.direct=1 to disable translation.\n"); 770 return -1; 771 } 772 773 /* 774 * Make sure nothing is coming from the keyboard and disturbs our 775 * internal state. 776 */ 777 if (!atkbd_skip_deactivate) 778 atkbd_deactivate(atkbd); 779 780 return 0; 781 } 782 783 /* 784 * atkbd_select_set checks if a keyboard has a working Set 3 support, and 785 * sets it into that. Unfortunately there are keyboards that can be switched 786 * to Set 3, but don't work well in that (BTC Multimedia ...) 787 */ 788 789 static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra) 790 { 791 struct ps2dev *ps2dev = &atkbd->ps2dev; 792 unsigned char param[2]; 793 794 atkbd->extra = false; 795 /* 796 * For known special keyboards we can go ahead and set the correct set. 797 * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and 798 * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards. 799 */ 800 801 if (atkbd->translated) 802 return 2; 803 804 if (atkbd->id == 0xaca1) { 805 param[0] = 3; 806 ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET); 807 return 3; 808 } 809 810 if (allow_extra) { 811 param[0] = 0x71; 812 if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) { 813 atkbd->extra = true; 814 return 2; 815 } 816 } 817 818 if (atkbd_terminal) { 819 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MB); 820 return 3; 821 } 822 823 if (target_set != 3) 824 return 2; 825 826 if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) { 827 atkbd->id = param[0] << 8 | param[1]; 828 return 2; 829 } 830 831 param[0] = 3; 832 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET)) 833 return 2; 834 835 param[0] = 0; 836 if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET)) 837 return 2; 838 839 if (param[0] != 3) { 840 param[0] = 2; 841 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET)) 842 return 2; 843 } 844 845 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR); 846 847 return 3; 848 } 849 850 static int atkbd_reset_state(struct atkbd *atkbd) 851 { 852 struct ps2dev *ps2dev = &atkbd->ps2dev; 853 unsigned char param[1]; 854 855 /* 856 * Set the LEDs to a predefined state (all off). 857 */ 858 859 param[0] = 0; 860 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS)) 861 return -1; 862 863 /* 864 * Set autorepeat to fastest possible. 865 */ 866 867 param[0] = 0; 868 if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP)) 869 return -1; 870 871 return 0; 872 } 873 874 /* 875 * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a 876 * reboot. 877 */ 878 879 static void atkbd_cleanup(struct serio *serio) 880 { 881 struct atkbd *atkbd = serio_get_drvdata(serio); 882 883 atkbd_disable(atkbd); 884 ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_DEF); 885 } 886 887 888 /* 889 * atkbd_disconnect() closes and frees. 890 */ 891 892 static void atkbd_disconnect(struct serio *serio) 893 { 894 struct atkbd *atkbd = serio_get_drvdata(serio); 895 896 sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group); 897 898 atkbd_disable(atkbd); 899 900 input_unregister_device(atkbd->dev); 901 902 /* 903 * Make sure we don't have a command in flight. 904 * Note that since atkbd->enabled is false event work will keep 905 * rescheduling itself until it gets canceled and will not try 906 * accessing freed input device or serio port. 907 */ 908 cancel_delayed_work_sync(&atkbd->event_work); 909 910 serio_close(serio); 911 serio_set_drvdata(serio, NULL); 912 kfree(atkbd); 913 } 914 915 /* 916 * generate release events for the keycodes given in data 917 */ 918 static void atkbd_apply_forced_release_keylist(struct atkbd* atkbd, 919 const void *data) 920 { 921 const unsigned int *keys = data; 922 unsigned int i; 923 924 if (atkbd->set == 2) 925 for (i = 0; keys[i] != -1U; i++) 926 __set_bit(keys[i], atkbd->force_release_mask); 927 } 928 929 /* 930 * Most special keys (Fn+F?) on Dell laptops do not generate release 931 * events so we have to do it ourselves. 932 */ 933 static unsigned int atkbd_dell_laptop_forced_release_keys[] = { 934 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8f, 0x93, -1U 935 }; 936 937 /* 938 * Perform fixup for HP system that doesn't generate release 939 * for its video switch 940 */ 941 static unsigned int atkbd_hp_forced_release_keys[] = { 942 0x94, -1U 943 }; 944 945 /* 946 * Samsung NC10,NC20 with Fn+F? key release not working 947 */ 948 static unsigned int atkbd_samsung_forced_release_keys[] = { 949 0x82, 0x83, 0x84, 0x86, 0x88, 0x89, 0xb3, 0xf7, 0xf9, -1U 950 }; 951 952 /* 953 * Amilo Pi 3525 key release for Fn+Volume keys not working 954 */ 955 static unsigned int atkbd_amilo_pi3525_forced_release_keys[] = { 956 0x20, 0xa0, 0x2e, 0xae, 0x30, 0xb0, -1U 957 }; 958 959 /* 960 * Amilo Xi 3650 key release for light touch bar not working 961 */ 962 static unsigned int atkbd_amilo_xi3650_forced_release_keys[] = { 963 0x67, 0xed, 0x90, 0xa2, 0x99, 0xa4, 0xae, 0xb0, -1U 964 }; 965 966 /* 967 * Soltech TA12 system with broken key release on volume keys and mute key 968 */ 969 static unsigned int atkdb_soltech_ta12_forced_release_keys[] = { 970 0xa0, 0xae, 0xb0, -1U 971 }; 972 973 /* 974 * Many notebooks don't send key release event for volume up/down 975 * keys, with key list below common among them 976 */ 977 static unsigned int atkbd_volume_forced_release_keys[] = { 978 0xae, 0xb0, -1U 979 }; 980 981 /* 982 * OQO 01+ multimedia keys (64--66) generate e0 6x upon release whereas 983 * they should be generating e4-e6 (0x80 | code). 984 */ 985 static unsigned int atkbd_oqo_01plus_scancode_fixup(struct atkbd *atkbd, 986 unsigned int code) 987 { 988 if (atkbd->translated && atkbd->emul == 1 && 989 (code == 0x64 || code == 0x65 || code == 0x66)) { 990 atkbd->emul = 0; 991 code |= 0x80; 992 } 993 994 return code; 995 } 996 997 /* 998 * atkbd_set_keycode_table() initializes keyboard's keycode table 999 * according to the selected scancode set 1000 */ 1001 1002 static void atkbd_set_keycode_table(struct atkbd *atkbd) 1003 { 1004 unsigned int scancode; 1005 int i, j; 1006 1007 memset(atkbd->keycode, 0, sizeof(atkbd->keycode)); 1008 bitmap_zero(atkbd->force_release_mask, ATKBD_KEYMAP_SIZE); 1009 1010 if (atkbd->translated) { 1011 for (i = 0; i < 128; i++) { 1012 scancode = atkbd_unxlate_table[i]; 1013 atkbd->keycode[i] = atkbd_set2_keycode[scancode]; 1014 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80]; 1015 if (atkbd->scroll) 1016 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++) 1017 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2) 1018 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode; 1019 } 1020 } else if (atkbd->set == 3) { 1021 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode)); 1022 } else { 1023 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode)); 1024 1025 if (atkbd->scroll) 1026 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) { 1027 scancode = atkbd_scroll_keys[i].set2; 1028 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode; 1029 } 1030 } 1031 1032 /* 1033 * HANGEUL and HANJA keys do not send release events so we need to 1034 * generate such events ourselves 1035 */ 1036 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL); 1037 atkbd->keycode[scancode] = KEY_HANGEUL; 1038 __set_bit(scancode, atkbd->force_release_mask); 1039 1040 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA); 1041 atkbd->keycode[scancode] = KEY_HANJA; 1042 __set_bit(scancode, atkbd->force_release_mask); 1043 1044 /* 1045 * Perform additional fixups 1046 */ 1047 if (atkbd_platform_fixup) 1048 atkbd_platform_fixup(atkbd, atkbd_platform_fixup_data); 1049 } 1050 1051 /* 1052 * atkbd_set_device_attrs() sets up keyboard's input device structure 1053 */ 1054 1055 static void atkbd_set_device_attrs(struct atkbd *atkbd) 1056 { 1057 struct input_dev *input_dev = atkbd->dev; 1058 int i; 1059 1060 if (atkbd->extra) 1061 snprintf(atkbd->name, sizeof(atkbd->name), 1062 "AT Set 2 Extra keyboard"); 1063 else 1064 snprintf(atkbd->name, sizeof(atkbd->name), 1065 "AT %s Set %d keyboard", 1066 atkbd->translated ? "Translated" : "Raw", atkbd->set); 1067 1068 snprintf(atkbd->phys, sizeof(atkbd->phys), 1069 "%s/input0", atkbd->ps2dev.serio->phys); 1070 1071 input_dev->name = atkbd->name; 1072 input_dev->phys = atkbd->phys; 1073 input_dev->id.bustype = BUS_I8042; 1074 input_dev->id.vendor = 0x0001; 1075 input_dev->id.product = atkbd->translated ? 1 : atkbd->set; 1076 input_dev->id.version = atkbd->id; 1077 input_dev->event = atkbd_event; 1078 input_dev->dev.parent = &atkbd->ps2dev.serio->dev; 1079 1080 input_set_drvdata(input_dev, atkbd); 1081 1082 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | 1083 BIT_MASK(EV_MSC); 1084 1085 if (atkbd->write) { 1086 input_dev->evbit[0] |= BIT_MASK(EV_LED); 1087 input_dev->ledbit[0] = BIT_MASK(LED_NUML) | 1088 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL); 1089 } 1090 1091 if (atkbd->extra) 1092 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) | 1093 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) | 1094 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC); 1095 1096 if (!atkbd->softrepeat) { 1097 input_dev->rep[REP_DELAY] = 250; 1098 input_dev->rep[REP_PERIOD] = 33; 1099 } 1100 1101 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) : 1102 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN); 1103 1104 if (atkbd->scroll) { 1105 input_dev->evbit[0] |= BIT_MASK(EV_REL); 1106 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) | 1107 BIT_MASK(REL_HWHEEL); 1108 __set_bit(BTN_MIDDLE, input_dev->keybit); 1109 } 1110 1111 input_dev->keycode = atkbd->keycode; 1112 input_dev->keycodesize = sizeof(unsigned short); 1113 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode); 1114 1115 for (i = 0; i < ATKBD_KEYMAP_SIZE; i++) { 1116 if (atkbd->keycode[i] != KEY_RESERVED && 1117 atkbd->keycode[i] != ATKBD_KEY_NULL && 1118 atkbd->keycode[i] < ATKBD_SPECIAL) { 1119 __set_bit(atkbd->keycode[i], input_dev->keybit); 1120 } 1121 } 1122 } 1123 1124 /* 1125 * atkbd_connect() is called when the serio module finds an interface 1126 * that isn't handled yet by an appropriate device driver. We check if 1127 * there is an AT keyboard out there and if yes, we register ourselves 1128 * to the input module. 1129 */ 1130 1131 static int atkbd_connect(struct serio *serio, struct serio_driver *drv) 1132 { 1133 struct atkbd *atkbd; 1134 struct input_dev *dev; 1135 int err = -ENOMEM; 1136 1137 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL); 1138 dev = input_allocate_device(); 1139 if (!atkbd || !dev) 1140 goto fail1; 1141 1142 atkbd->dev = dev; 1143 ps2_init(&atkbd->ps2dev, serio); 1144 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work); 1145 mutex_init(&atkbd->mutex); 1146 1147 switch (serio->id.type) { 1148 1149 case SERIO_8042_XL: 1150 atkbd->translated = true; 1151 /* Fall through */ 1152 1153 case SERIO_8042: 1154 if (serio->write) 1155 atkbd->write = true; 1156 break; 1157 } 1158 1159 atkbd->softraw = atkbd_softraw; 1160 atkbd->softrepeat = atkbd_softrepeat; 1161 atkbd->scroll = atkbd_scroll; 1162 1163 if (atkbd->softrepeat) 1164 atkbd->softraw = true; 1165 1166 serio_set_drvdata(serio, atkbd); 1167 1168 err = serio_open(serio, drv); 1169 if (err) 1170 goto fail2; 1171 1172 if (atkbd->write) { 1173 1174 if (atkbd_probe(atkbd)) { 1175 err = -ENODEV; 1176 goto fail3; 1177 } 1178 1179 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra); 1180 atkbd_reset_state(atkbd); 1181 1182 } else { 1183 atkbd->set = 2; 1184 atkbd->id = 0xab00; 1185 } 1186 1187 atkbd_set_keycode_table(atkbd); 1188 atkbd_set_device_attrs(atkbd); 1189 1190 err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group); 1191 if (err) 1192 goto fail3; 1193 1194 atkbd_enable(atkbd); 1195 if (serio->write) 1196 atkbd_activate(atkbd); 1197 1198 err = input_register_device(atkbd->dev); 1199 if (err) 1200 goto fail4; 1201 1202 return 0; 1203 1204 fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group); 1205 fail3: serio_close(serio); 1206 fail2: serio_set_drvdata(serio, NULL); 1207 fail1: input_free_device(dev); 1208 kfree(atkbd); 1209 return err; 1210 } 1211 1212 /* 1213 * atkbd_reconnect() tries to restore keyboard into a sane state and is 1214 * most likely called on resume. 1215 */ 1216 1217 static int atkbd_reconnect(struct serio *serio) 1218 { 1219 struct atkbd *atkbd = serio_get_drvdata(serio); 1220 struct serio_driver *drv = serio->drv; 1221 int retval = -1; 1222 1223 if (!atkbd || !drv) { 1224 dev_dbg(&serio->dev, 1225 "reconnect request, but serio is disconnected, ignoring...\n"); 1226 return -1; 1227 } 1228 1229 mutex_lock(&atkbd->mutex); 1230 1231 atkbd_disable(atkbd); 1232 1233 if (atkbd->write) { 1234 if (atkbd_probe(atkbd)) 1235 goto out; 1236 1237 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra)) 1238 goto out; 1239 1240 /* 1241 * Restore LED state and repeat rate. While input core 1242 * will do this for us at resume time reconnect may happen 1243 * because user requested it via sysfs or simply because 1244 * keyboard was unplugged and plugged in again so we need 1245 * to do it ourselves here. 1246 */ 1247 atkbd_set_leds(atkbd); 1248 if (!atkbd->softrepeat) 1249 atkbd_set_repeat_rate(atkbd); 1250 1251 } 1252 1253 /* 1254 * Reset our state machine in case reconnect happened in the middle 1255 * of multi-byte scancode. 1256 */ 1257 atkbd->xl_bit = 0; 1258 atkbd->emul = 0; 1259 1260 atkbd_enable(atkbd); 1261 if (atkbd->write) 1262 atkbd_activate(atkbd); 1263 1264 retval = 0; 1265 1266 out: 1267 mutex_unlock(&atkbd->mutex); 1268 return retval; 1269 } 1270 1271 static const struct serio_device_id atkbd_serio_ids[] = { 1272 { 1273 .type = SERIO_8042, 1274 .proto = SERIO_ANY, 1275 .id = SERIO_ANY, 1276 .extra = SERIO_ANY, 1277 }, 1278 { 1279 .type = SERIO_8042_XL, 1280 .proto = SERIO_ANY, 1281 .id = SERIO_ANY, 1282 .extra = SERIO_ANY, 1283 }, 1284 { 1285 .type = SERIO_RS232, 1286 .proto = SERIO_PS2SER, 1287 .id = SERIO_ANY, 1288 .extra = SERIO_ANY, 1289 }, 1290 { 0 } 1291 }; 1292 1293 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids); 1294 1295 static struct serio_driver atkbd_drv = { 1296 .driver = { 1297 .name = "atkbd", 1298 }, 1299 .description = DRIVER_DESC, 1300 .id_table = atkbd_serio_ids, 1301 .interrupt = atkbd_interrupt, 1302 .connect = atkbd_connect, 1303 .reconnect = atkbd_reconnect, 1304 .disconnect = atkbd_disconnect, 1305 .cleanup = atkbd_cleanup, 1306 }; 1307 1308 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf, 1309 ssize_t (*handler)(struct atkbd *, char *)) 1310 { 1311 struct serio *serio = to_serio_port(dev); 1312 struct atkbd *atkbd = serio_get_drvdata(serio); 1313 1314 return handler(atkbd, buf); 1315 } 1316 1317 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count, 1318 ssize_t (*handler)(struct atkbd *, const char *, size_t)) 1319 { 1320 struct serio *serio = to_serio_port(dev); 1321 struct atkbd *atkbd = serio_get_drvdata(serio); 1322 int retval; 1323 1324 retval = mutex_lock_interruptible(&atkbd->mutex); 1325 if (retval) 1326 return retval; 1327 1328 atkbd_disable(atkbd); 1329 retval = handler(atkbd, buf, count); 1330 atkbd_enable(atkbd); 1331 1332 mutex_unlock(&atkbd->mutex); 1333 1334 return retval; 1335 } 1336 1337 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf) 1338 { 1339 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0); 1340 } 1341 1342 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count) 1343 { 1344 struct input_dev *old_dev, *new_dev; 1345 unsigned int value; 1346 int err; 1347 bool old_extra; 1348 unsigned char old_set; 1349 1350 if (!atkbd->write) 1351 return -EIO; 1352 1353 err = kstrtouint(buf, 10, &value); 1354 if (err) 1355 return err; 1356 1357 if (value > 1) 1358 return -EINVAL; 1359 1360 if (atkbd->extra != value) { 1361 /* 1362 * Since device's properties will change we need to 1363 * unregister old device. But allocate and register 1364 * new one first to make sure we have it. 1365 */ 1366 old_dev = atkbd->dev; 1367 old_extra = atkbd->extra; 1368 old_set = atkbd->set; 1369 1370 new_dev = input_allocate_device(); 1371 if (!new_dev) 1372 return -ENOMEM; 1373 1374 atkbd->dev = new_dev; 1375 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value); 1376 atkbd_reset_state(atkbd); 1377 atkbd_activate(atkbd); 1378 atkbd_set_keycode_table(atkbd); 1379 atkbd_set_device_attrs(atkbd); 1380 1381 err = input_register_device(atkbd->dev); 1382 if (err) { 1383 input_free_device(new_dev); 1384 1385 atkbd->dev = old_dev; 1386 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra); 1387 atkbd_set_keycode_table(atkbd); 1388 atkbd_set_device_attrs(atkbd); 1389 1390 return err; 1391 } 1392 input_unregister_device(old_dev); 1393 1394 } 1395 return count; 1396 } 1397 1398 static ssize_t atkbd_show_force_release(struct atkbd *atkbd, char *buf) 1399 { 1400 size_t len = scnprintf(buf, PAGE_SIZE - 1, "%*pbl", 1401 ATKBD_KEYMAP_SIZE, atkbd->force_release_mask); 1402 1403 buf[len++] = '\n'; 1404 buf[len] = '\0'; 1405 1406 return len; 1407 } 1408 1409 static ssize_t atkbd_set_force_release(struct atkbd *atkbd, 1410 const char *buf, size_t count) 1411 { 1412 /* 64 bytes on stack should be acceptable */ 1413 DECLARE_BITMAP(new_mask, ATKBD_KEYMAP_SIZE); 1414 int err; 1415 1416 err = bitmap_parselist(buf, new_mask, ATKBD_KEYMAP_SIZE); 1417 if (err) 1418 return err; 1419 1420 memcpy(atkbd->force_release_mask, new_mask, sizeof(atkbd->force_release_mask)); 1421 return count; 1422 } 1423 1424 1425 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf) 1426 { 1427 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0); 1428 } 1429 1430 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count) 1431 { 1432 struct input_dev *old_dev, *new_dev; 1433 unsigned int value; 1434 int err; 1435 bool old_scroll; 1436 1437 err = kstrtouint(buf, 10, &value); 1438 if (err) 1439 return err; 1440 1441 if (value > 1) 1442 return -EINVAL; 1443 1444 if (atkbd->scroll != value) { 1445 old_dev = atkbd->dev; 1446 old_scroll = atkbd->scroll; 1447 1448 new_dev = input_allocate_device(); 1449 if (!new_dev) 1450 return -ENOMEM; 1451 1452 atkbd->dev = new_dev; 1453 atkbd->scroll = value; 1454 atkbd_set_keycode_table(atkbd); 1455 atkbd_set_device_attrs(atkbd); 1456 1457 err = input_register_device(atkbd->dev); 1458 if (err) { 1459 input_free_device(new_dev); 1460 1461 atkbd->scroll = old_scroll; 1462 atkbd->dev = old_dev; 1463 atkbd_set_keycode_table(atkbd); 1464 atkbd_set_device_attrs(atkbd); 1465 1466 return err; 1467 } 1468 input_unregister_device(old_dev); 1469 } 1470 return count; 1471 } 1472 1473 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf) 1474 { 1475 return sprintf(buf, "%d\n", atkbd->set); 1476 } 1477 1478 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count) 1479 { 1480 struct input_dev *old_dev, *new_dev; 1481 unsigned int value; 1482 int err; 1483 unsigned char old_set; 1484 bool old_extra; 1485 1486 if (!atkbd->write) 1487 return -EIO; 1488 1489 err = kstrtouint(buf, 10, &value); 1490 if (err) 1491 return err; 1492 1493 if (value != 2 && value != 3) 1494 return -EINVAL; 1495 1496 if (atkbd->set != value) { 1497 old_dev = atkbd->dev; 1498 old_extra = atkbd->extra; 1499 old_set = atkbd->set; 1500 1501 new_dev = input_allocate_device(); 1502 if (!new_dev) 1503 return -ENOMEM; 1504 1505 atkbd->dev = new_dev; 1506 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra); 1507 atkbd_reset_state(atkbd); 1508 atkbd_activate(atkbd); 1509 atkbd_set_keycode_table(atkbd); 1510 atkbd_set_device_attrs(atkbd); 1511 1512 err = input_register_device(atkbd->dev); 1513 if (err) { 1514 input_free_device(new_dev); 1515 1516 atkbd->dev = old_dev; 1517 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra); 1518 atkbd_set_keycode_table(atkbd); 1519 atkbd_set_device_attrs(atkbd); 1520 1521 return err; 1522 } 1523 input_unregister_device(old_dev); 1524 } 1525 return count; 1526 } 1527 1528 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf) 1529 { 1530 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0); 1531 } 1532 1533 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count) 1534 { 1535 struct input_dev *old_dev, *new_dev; 1536 unsigned int value; 1537 int err; 1538 bool old_softrepeat, old_softraw; 1539 1540 if (!atkbd->write) 1541 return -EIO; 1542 1543 err = kstrtouint(buf, 10, &value); 1544 if (err) 1545 return err; 1546 1547 if (value > 1) 1548 return -EINVAL; 1549 1550 if (atkbd->softrepeat != value) { 1551 old_dev = atkbd->dev; 1552 old_softrepeat = atkbd->softrepeat; 1553 old_softraw = atkbd->softraw; 1554 1555 new_dev = input_allocate_device(); 1556 if (!new_dev) 1557 return -ENOMEM; 1558 1559 atkbd->dev = new_dev; 1560 atkbd->softrepeat = value; 1561 if (atkbd->softrepeat) 1562 atkbd->softraw = true; 1563 atkbd_set_device_attrs(atkbd); 1564 1565 err = input_register_device(atkbd->dev); 1566 if (err) { 1567 input_free_device(new_dev); 1568 1569 atkbd->dev = old_dev; 1570 atkbd->softrepeat = old_softrepeat; 1571 atkbd->softraw = old_softraw; 1572 atkbd_set_device_attrs(atkbd); 1573 1574 return err; 1575 } 1576 input_unregister_device(old_dev); 1577 } 1578 return count; 1579 } 1580 1581 1582 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf) 1583 { 1584 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0); 1585 } 1586 1587 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count) 1588 { 1589 struct input_dev *old_dev, *new_dev; 1590 unsigned int value; 1591 int err; 1592 bool old_softraw; 1593 1594 err = kstrtouint(buf, 10, &value); 1595 if (err) 1596 return err; 1597 1598 if (value > 1) 1599 return -EINVAL; 1600 1601 if (atkbd->softraw != value) { 1602 old_dev = atkbd->dev; 1603 old_softraw = atkbd->softraw; 1604 1605 new_dev = input_allocate_device(); 1606 if (!new_dev) 1607 return -ENOMEM; 1608 1609 atkbd->dev = new_dev; 1610 atkbd->softraw = value; 1611 atkbd_set_device_attrs(atkbd); 1612 1613 err = input_register_device(atkbd->dev); 1614 if (err) { 1615 input_free_device(new_dev); 1616 1617 atkbd->dev = old_dev; 1618 atkbd->softraw = old_softraw; 1619 atkbd_set_device_attrs(atkbd); 1620 1621 return err; 1622 } 1623 input_unregister_device(old_dev); 1624 } 1625 return count; 1626 } 1627 1628 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf) 1629 { 1630 return sprintf(buf, "%lu\n", atkbd->err_count); 1631 } 1632 1633 static int __init atkbd_setup_forced_release(const struct dmi_system_id *id) 1634 { 1635 atkbd_platform_fixup = atkbd_apply_forced_release_keylist; 1636 atkbd_platform_fixup_data = id->driver_data; 1637 1638 return 1; 1639 } 1640 1641 static int __init atkbd_setup_scancode_fixup(const struct dmi_system_id *id) 1642 { 1643 atkbd_platform_scancode_fixup = id->driver_data; 1644 1645 return 1; 1646 } 1647 1648 static int __init atkbd_deactivate_fixup(const struct dmi_system_id *id) 1649 { 1650 atkbd_skip_deactivate = true; 1651 return 1; 1652 } 1653 1654 /* 1655 * NOTE: do not add any more "force release" quirks to this table. The 1656 * task of adjusting list of keys that should be "released" automatically 1657 * by the driver is now delegated to userspace tools, such as udev, so 1658 * submit such quirks there. 1659 */ 1660 static const struct dmi_system_id atkbd_dmi_quirk_table[] __initconst = { 1661 { 1662 .matches = { 1663 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 1664 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */ 1665 }, 1666 .callback = atkbd_setup_forced_release, 1667 .driver_data = atkbd_dell_laptop_forced_release_keys, 1668 }, 1669 { 1670 .matches = { 1671 DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"), 1672 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */ 1673 }, 1674 .callback = atkbd_setup_forced_release, 1675 .driver_data = atkbd_dell_laptop_forced_release_keys, 1676 }, 1677 { 1678 .matches = { 1679 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1680 DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"), 1681 }, 1682 .callback = atkbd_setup_forced_release, 1683 .driver_data = atkbd_hp_forced_release_keys, 1684 }, 1685 { 1686 .matches = { 1687 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1688 DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion ZV6100"), 1689 }, 1690 .callback = atkbd_setup_forced_release, 1691 .driver_data = atkbd_volume_forced_release_keys, 1692 }, 1693 { 1694 .matches = { 1695 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1696 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4000"), 1697 }, 1698 .callback = atkbd_setup_forced_release, 1699 .driver_data = atkbd_volume_forced_release_keys, 1700 }, 1701 { 1702 .matches = { 1703 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1704 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4100"), 1705 }, 1706 .callback = atkbd_setup_forced_release, 1707 .driver_data = atkbd_volume_forced_release_keys, 1708 }, 1709 { 1710 .matches = { 1711 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1712 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4200"), 1713 }, 1714 .callback = atkbd_setup_forced_release, 1715 .driver_data = atkbd_volume_forced_release_keys, 1716 }, 1717 { 1718 /* Inventec Symphony */ 1719 .matches = { 1720 DMI_MATCH(DMI_SYS_VENDOR, "INVENTEC"), 1721 DMI_MATCH(DMI_PRODUCT_NAME, "SYMPHONY 6.0/7.0"), 1722 }, 1723 .callback = atkbd_setup_forced_release, 1724 .driver_data = atkbd_volume_forced_release_keys, 1725 }, 1726 { 1727 /* Samsung NC10 */ 1728 .matches = { 1729 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), 1730 DMI_MATCH(DMI_PRODUCT_NAME, "NC10"), 1731 }, 1732 .callback = atkbd_setup_forced_release, 1733 .driver_data = atkbd_samsung_forced_release_keys, 1734 }, 1735 { 1736 /* Samsung NC20 */ 1737 .matches = { 1738 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), 1739 DMI_MATCH(DMI_PRODUCT_NAME, "NC20"), 1740 }, 1741 .callback = atkbd_setup_forced_release, 1742 .driver_data = atkbd_samsung_forced_release_keys, 1743 }, 1744 { 1745 /* Samsung SQ45S70S */ 1746 .matches = { 1747 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), 1748 DMI_MATCH(DMI_PRODUCT_NAME, "SQ45S70S"), 1749 }, 1750 .callback = atkbd_setup_forced_release, 1751 .driver_data = atkbd_samsung_forced_release_keys, 1752 }, 1753 { 1754 /* Fujitsu Amilo PA 1510 */ 1755 .matches = { 1756 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1757 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 1510"), 1758 }, 1759 .callback = atkbd_setup_forced_release, 1760 .driver_data = atkbd_volume_forced_release_keys, 1761 }, 1762 { 1763 /* Fujitsu Amilo Pi 3525 */ 1764 .matches = { 1765 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1766 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 3525"), 1767 }, 1768 .callback = atkbd_setup_forced_release, 1769 .driver_data = atkbd_amilo_pi3525_forced_release_keys, 1770 }, 1771 { 1772 /* Fujitsu Amilo Xi 3650 */ 1773 .matches = { 1774 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1775 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 3650"), 1776 }, 1777 .callback = atkbd_setup_forced_release, 1778 .driver_data = atkbd_amilo_xi3650_forced_release_keys, 1779 }, 1780 { 1781 .matches = { 1782 DMI_MATCH(DMI_SYS_VENDOR, "Soltech Corporation"), 1783 DMI_MATCH(DMI_PRODUCT_NAME, "TA12"), 1784 }, 1785 .callback = atkbd_setup_forced_release, 1786 .driver_data = atkdb_soltech_ta12_forced_release_keys, 1787 }, 1788 { 1789 /* OQO Model 01+ */ 1790 .matches = { 1791 DMI_MATCH(DMI_SYS_VENDOR, "OQO"), 1792 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPTO"), 1793 }, 1794 .callback = atkbd_setup_scancode_fixup, 1795 .driver_data = atkbd_oqo_01plus_scancode_fixup, 1796 }, 1797 { 1798 .matches = { 1799 DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"), 1800 }, 1801 .callback = atkbd_deactivate_fixup, 1802 }, 1803 { } 1804 }; 1805 1806 static int __init atkbd_init(void) 1807 { 1808 dmi_check_system(atkbd_dmi_quirk_table); 1809 1810 return serio_register_driver(&atkbd_drv); 1811 } 1812 1813 static void __exit atkbd_exit(void) 1814 { 1815 serio_unregister_driver(&atkbd_drv); 1816 } 1817 1818 module_init(atkbd_init); 1819 module_exit(atkbd_exit); 1820