1 /* 2 * AT and PS/2 keyboard driver 3 * 4 * Copyright (c) 1999-2002 Vojtech Pavlik 5 */ 6 7 /* 8 * This program is free software; you can redistribute it and/or modify it 9 * under the terms of the GNU General Public License version 2 as published by 10 * the Free Software Foundation. 11 */ 12 13 /* 14 * This driver can handle standard AT keyboards and PS/2 keyboards in 15 * Translated and Raw Set 2 and Set 3, as well as AT keyboards on dumb 16 * input-only controllers and AT keyboards connected over a one way RS232 17 * converter. 18 */ 19 20 #include <linux/delay.h> 21 #include <linux/module.h> 22 #include <linux/slab.h> 23 #include <linux/interrupt.h> 24 #include <linux/init.h> 25 #include <linux/input.h> 26 #include <linux/serio.h> 27 #include <linux/workqueue.h> 28 #include <linux/libps2.h> 29 #include <linux/mutex.h> 30 #include <linux/dmi.h> 31 32 #define DRIVER_DESC "AT and PS/2 keyboard driver" 33 34 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>"); 35 MODULE_DESCRIPTION(DRIVER_DESC); 36 MODULE_LICENSE("GPL"); 37 38 static int atkbd_set = 2; 39 module_param_named(set, atkbd_set, int, 0); 40 MODULE_PARM_DESC(set, "Select keyboard code set (2 = default, 3 = PS/2 native)"); 41 42 #if defined(__i386__) || defined(__x86_64__) || defined(__hppa__) 43 static bool atkbd_reset; 44 #else 45 static bool atkbd_reset = true; 46 #endif 47 module_param_named(reset, atkbd_reset, bool, 0); 48 MODULE_PARM_DESC(reset, "Reset keyboard during initialization"); 49 50 static bool atkbd_softrepeat; 51 module_param_named(softrepeat, atkbd_softrepeat, bool, 0); 52 MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat"); 53 54 static bool atkbd_softraw = true; 55 module_param_named(softraw, atkbd_softraw, bool, 0); 56 MODULE_PARM_DESC(softraw, "Use software generated rawmode"); 57 58 static bool atkbd_scroll; 59 module_param_named(scroll, atkbd_scroll, bool, 0); 60 MODULE_PARM_DESC(scroll, "Enable scroll-wheel on MS Office and similar keyboards"); 61 62 static bool atkbd_extra; 63 module_param_named(extra, atkbd_extra, bool, 0); 64 MODULE_PARM_DESC(extra, "Enable extra LEDs and keys on IBM RapidAcces, EzKey and similar keyboards"); 65 66 static bool atkbd_terminal; 67 module_param_named(terminal, atkbd_terminal, bool, 0); 68 MODULE_PARM_DESC(terminal, "Enable break codes on an IBM Terminal keyboard connected via AT/PS2"); 69 70 /* 71 * Scancode to keycode tables. These are just the default setting, and 72 * are loadable via a userland utility. 73 */ 74 75 #define ATKBD_KEYMAP_SIZE 512 76 77 static const unsigned short atkbd_set2_keycode[ATKBD_KEYMAP_SIZE] = { 78 79 #ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES 80 81 /* XXX: need a more general approach */ 82 83 #include "hpps2atkbd.h" /* include the keyboard scancodes */ 84 85 #else 86 0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117, 87 0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0, 88 0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183, 89 0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185, 90 0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0, 91 0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85, 92 0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0, 93 82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99, 94 95 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 96 217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125, 97 173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127, 98 159, 0,115, 0,164, 0, 0,116,158, 0,172,166, 0, 0, 0,142, 99 157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0, 100 226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0, 101 0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112, 102 110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0, 103 104 0, 0, 0, 65, 99, 105 #endif 106 }; 107 108 static const unsigned short atkbd_set3_keycode[ATKBD_KEYMAP_SIZE] = { 109 110 0, 0, 0, 0, 0, 0, 0, 59, 1,138,128,129,130, 15, 41, 60, 111 131, 29, 42, 86, 58, 16, 2, 61,133, 56, 44, 31, 30, 17, 3, 62, 112 134, 46, 45, 32, 18, 5, 4, 63,135, 57, 47, 33, 20, 19, 6, 64, 113 136, 49, 48, 35, 34, 21, 7, 65,137,100, 50, 36, 22, 8, 9, 66, 114 125, 51, 37, 23, 24, 11, 10, 67,126, 52, 53, 38, 39, 25, 12, 68, 115 113,114, 40, 43, 26, 13, 87, 99, 97, 54, 28, 27, 43, 43, 88, 70, 116 108,105,119,103,111,107, 14,110, 0, 79,106, 75, 71,109,102,104, 117 82, 83, 80, 76, 77, 72, 69, 98, 0, 96, 81, 0, 78, 73, 55,183, 118 119 184,185,186,187, 74, 94, 92, 93, 0, 0, 0,125,126,127,112, 0, 120 0,139,172,163,165,115,152,172,166,140,160,154,113,114,167,168, 121 148,149,147,140 122 }; 123 124 static const unsigned short atkbd_unxlate_table[128] = { 125 0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13, 126 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27, 127 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42, 128 50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3, 129 11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105, 130 114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63, 131 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111, 132 19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110 133 }; 134 135 #define ATKBD_CMD_SETLEDS 0x10ed 136 #define ATKBD_CMD_GSCANSET 0x11f0 137 #define ATKBD_CMD_SSCANSET 0x10f0 138 #define ATKBD_CMD_GETID 0x02f2 139 #define ATKBD_CMD_SETREP 0x10f3 140 #define ATKBD_CMD_ENABLE 0x00f4 141 #define ATKBD_CMD_RESET_DIS 0x00f5 /* Reset to defaults and disable */ 142 #define ATKBD_CMD_RESET_DEF 0x00f6 /* Reset to defaults */ 143 #define ATKBD_CMD_SETALL_MB 0x00f8 /* Set all keys to give break codes */ 144 #define ATKBD_CMD_SETALL_MBR 0x00fa /* ... and repeat */ 145 #define ATKBD_CMD_RESET_BAT 0x02ff 146 #define ATKBD_CMD_RESEND 0x00fe 147 #define ATKBD_CMD_EX_ENABLE 0x10ea 148 #define ATKBD_CMD_EX_SETLEDS 0x20eb 149 #define ATKBD_CMD_OK_GETID 0x02e8 150 151 #define ATKBD_RET_ACK 0xfa 152 #define ATKBD_RET_NAK 0xfe 153 #define ATKBD_RET_BAT 0xaa 154 #define ATKBD_RET_EMUL0 0xe0 155 #define ATKBD_RET_EMUL1 0xe1 156 #define ATKBD_RET_RELEASE 0xf0 157 #define ATKBD_RET_HANJA 0xf1 158 #define ATKBD_RET_HANGEUL 0xf2 159 #define ATKBD_RET_ERR 0xff 160 161 #define ATKBD_KEY_UNKNOWN 0 162 #define ATKBD_KEY_NULL 255 163 164 #define ATKBD_SCR_1 0xfffe 165 #define ATKBD_SCR_2 0xfffd 166 #define ATKBD_SCR_4 0xfffc 167 #define ATKBD_SCR_8 0xfffb 168 #define ATKBD_SCR_CLICK 0xfffa 169 #define ATKBD_SCR_LEFT 0xfff9 170 #define ATKBD_SCR_RIGHT 0xfff8 171 172 #define ATKBD_SPECIAL ATKBD_SCR_RIGHT 173 174 #define ATKBD_LED_EVENT_BIT 0 175 #define ATKBD_REP_EVENT_BIT 1 176 177 #define ATKBD_XL_ERR 0x01 178 #define ATKBD_XL_BAT 0x02 179 #define ATKBD_XL_ACK 0x04 180 #define ATKBD_XL_NAK 0x08 181 #define ATKBD_XL_HANGEUL 0x10 182 #define ATKBD_XL_HANJA 0x20 183 184 static const struct { 185 unsigned short keycode; 186 unsigned char set2; 187 } atkbd_scroll_keys[] = { 188 { ATKBD_SCR_1, 0xc5 }, 189 { ATKBD_SCR_2, 0x9d }, 190 { ATKBD_SCR_4, 0xa4 }, 191 { ATKBD_SCR_8, 0x9b }, 192 { ATKBD_SCR_CLICK, 0xe0 }, 193 { ATKBD_SCR_LEFT, 0xcb }, 194 { ATKBD_SCR_RIGHT, 0xd2 }, 195 }; 196 197 /* 198 * The atkbd control structure 199 */ 200 201 struct atkbd { 202 203 struct ps2dev ps2dev; 204 struct input_dev *dev; 205 206 /* Written only during init */ 207 char name[64]; 208 char phys[32]; 209 210 unsigned short id; 211 unsigned short keycode[ATKBD_KEYMAP_SIZE]; 212 DECLARE_BITMAP(force_release_mask, ATKBD_KEYMAP_SIZE); 213 unsigned char set; 214 bool translated; 215 bool extra; 216 bool write; 217 bool softrepeat; 218 bool softraw; 219 bool scroll; 220 bool enabled; 221 222 /* Accessed only from interrupt */ 223 unsigned char emul; 224 bool resend; 225 bool release; 226 unsigned long xl_bit; 227 unsigned int last; 228 unsigned long time; 229 unsigned long err_count; 230 231 struct delayed_work event_work; 232 unsigned long event_jiffies; 233 unsigned long event_mask; 234 235 /* Serializes reconnect(), attr->set() and event work */ 236 struct mutex mutex; 237 }; 238 239 /* 240 * System-specific keymap fixup routine 241 */ 242 static void (*atkbd_platform_fixup)(struct atkbd *, const void *data); 243 static void *atkbd_platform_fixup_data; 244 static unsigned int (*atkbd_platform_scancode_fixup)(struct atkbd *, unsigned int); 245 246 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf, 247 ssize_t (*handler)(struct atkbd *, char *)); 248 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count, 249 ssize_t (*handler)(struct atkbd *, const char *, size_t)); 250 #define ATKBD_DEFINE_ATTR(_name) \ 251 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \ 252 static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \ 253 static ssize_t atkbd_do_show_##_name(struct device *d, \ 254 struct device_attribute *attr, char *b) \ 255 { \ 256 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \ 257 } \ 258 static ssize_t atkbd_do_set_##_name(struct device *d, \ 259 struct device_attribute *attr, const char *b, size_t s) \ 260 { \ 261 return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name); \ 262 } \ 263 static struct device_attribute atkbd_attr_##_name = \ 264 __ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name); 265 266 ATKBD_DEFINE_ATTR(extra); 267 ATKBD_DEFINE_ATTR(force_release); 268 ATKBD_DEFINE_ATTR(scroll); 269 ATKBD_DEFINE_ATTR(set); 270 ATKBD_DEFINE_ATTR(softrepeat); 271 ATKBD_DEFINE_ATTR(softraw); 272 273 #define ATKBD_DEFINE_RO_ATTR(_name) \ 274 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \ 275 static ssize_t atkbd_do_show_##_name(struct device *d, \ 276 struct device_attribute *attr, char *b) \ 277 { \ 278 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \ 279 } \ 280 static struct device_attribute atkbd_attr_##_name = \ 281 __ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL); 282 283 ATKBD_DEFINE_RO_ATTR(err_count); 284 285 static struct attribute *atkbd_attributes[] = { 286 &atkbd_attr_extra.attr, 287 &atkbd_attr_force_release.attr, 288 &atkbd_attr_scroll.attr, 289 &atkbd_attr_set.attr, 290 &atkbd_attr_softrepeat.attr, 291 &atkbd_attr_softraw.attr, 292 &atkbd_attr_err_count.attr, 293 NULL 294 }; 295 296 static struct attribute_group atkbd_attribute_group = { 297 .attrs = atkbd_attributes, 298 }; 299 300 static const unsigned int xl_table[] = { 301 ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK, 302 ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL, 303 }; 304 305 /* 306 * Checks if we should mangle the scancode to extract 'release' bit 307 * in translated mode. 308 */ 309 static bool atkbd_need_xlate(unsigned long xl_bit, unsigned char code) 310 { 311 int i; 312 313 if (code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1) 314 return false; 315 316 for (i = 0; i < ARRAY_SIZE(xl_table); i++) 317 if (code == xl_table[i]) 318 return test_bit(i, &xl_bit); 319 320 return true; 321 } 322 323 /* 324 * Calculates new value of xl_bit so the driver can distinguish 325 * between make/break pair of scancodes for select keys and PS/2 326 * protocol responses. 327 */ 328 static void atkbd_calculate_xl_bit(struct atkbd *atkbd, unsigned char code) 329 { 330 int i; 331 332 for (i = 0; i < ARRAY_SIZE(xl_table); i++) { 333 if (!((code ^ xl_table[i]) & 0x7f)) { 334 if (code & 0x80) 335 __clear_bit(i, &atkbd->xl_bit); 336 else 337 __set_bit(i, &atkbd->xl_bit); 338 break; 339 } 340 } 341 } 342 343 /* 344 * Encode the scancode, 0xe0 prefix, and high bit into a single integer, 345 * keeping kernel 2.4 compatibility for set 2 346 */ 347 static unsigned int atkbd_compat_scancode(struct atkbd *atkbd, unsigned int code) 348 { 349 if (atkbd->set == 3) { 350 if (atkbd->emul == 1) 351 code |= 0x100; 352 } else { 353 code = (code & 0x7f) | ((code & 0x80) << 1); 354 if (atkbd->emul == 1) 355 code |= 0x80; 356 } 357 358 return code; 359 } 360 361 /* 362 * atkbd_interrupt(). Here takes place processing of data received from 363 * the keyboard into events. 364 */ 365 366 static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data, 367 unsigned int flags) 368 { 369 struct atkbd *atkbd = serio_get_drvdata(serio); 370 struct input_dev *dev = atkbd->dev; 371 unsigned int code = data; 372 int scroll = 0, hscroll = 0, click = -1; 373 int value; 374 unsigned short keycode; 375 376 dev_dbg(&serio->dev, "Received %02x flags %02x\n", data, flags); 377 378 #if !defined(__i386__) && !defined (__x86_64__) 379 if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) { 380 dev_warn(&serio->dev, "Frame/parity error: %02x\n", flags); 381 serio_write(serio, ATKBD_CMD_RESEND); 382 atkbd->resend = true; 383 goto out; 384 } 385 386 if (!flags && data == ATKBD_RET_ACK) 387 atkbd->resend = false; 388 #endif 389 390 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_ACK)) 391 if (ps2_handle_ack(&atkbd->ps2dev, data)) 392 goto out; 393 394 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_CMD)) 395 if (ps2_handle_response(&atkbd->ps2dev, data)) 396 goto out; 397 398 if (!atkbd->enabled) 399 goto out; 400 401 input_event(dev, EV_MSC, MSC_RAW, code); 402 403 if (atkbd_platform_scancode_fixup) 404 code = atkbd_platform_scancode_fixup(atkbd, code); 405 406 if (atkbd->translated) { 407 408 if (atkbd->emul || atkbd_need_xlate(atkbd->xl_bit, code)) { 409 atkbd->release = code >> 7; 410 code &= 0x7f; 411 } 412 413 if (!atkbd->emul) 414 atkbd_calculate_xl_bit(atkbd, data); 415 } 416 417 switch (code) { 418 case ATKBD_RET_BAT: 419 atkbd->enabled = false; 420 serio_reconnect(atkbd->ps2dev.serio); 421 goto out; 422 case ATKBD_RET_EMUL0: 423 atkbd->emul = 1; 424 goto out; 425 case ATKBD_RET_EMUL1: 426 atkbd->emul = 2; 427 goto out; 428 case ATKBD_RET_RELEASE: 429 atkbd->release = true; 430 goto out; 431 case ATKBD_RET_ACK: 432 case ATKBD_RET_NAK: 433 if (printk_ratelimit()) 434 dev_warn(&serio->dev, 435 "Spurious %s on %s. " 436 "Some program might be trying to access hardware directly.\n", 437 data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys); 438 goto out; 439 case ATKBD_RET_ERR: 440 atkbd->err_count++; 441 dev_dbg(&serio->dev, "Keyboard on %s reports too many keys pressed.\n", 442 serio->phys); 443 goto out; 444 } 445 446 code = atkbd_compat_scancode(atkbd, code); 447 448 if (atkbd->emul && --atkbd->emul) 449 goto out; 450 451 keycode = atkbd->keycode[code]; 452 453 if (keycode != ATKBD_KEY_NULL) 454 input_event(dev, EV_MSC, MSC_SCAN, code); 455 456 switch (keycode) { 457 case ATKBD_KEY_NULL: 458 break; 459 case ATKBD_KEY_UNKNOWN: 460 dev_warn(&serio->dev, 461 "Unknown key %s (%s set %d, code %#x on %s).\n", 462 atkbd->release ? "released" : "pressed", 463 atkbd->translated ? "translated" : "raw", 464 atkbd->set, code, serio->phys); 465 dev_warn(&serio->dev, 466 "Use 'setkeycodes %s%02x <keycode>' to make it known.\n", 467 code & 0x80 ? "e0" : "", code & 0x7f); 468 input_sync(dev); 469 break; 470 case ATKBD_SCR_1: 471 scroll = 1; 472 break; 473 case ATKBD_SCR_2: 474 scroll = 2; 475 break; 476 case ATKBD_SCR_4: 477 scroll = 4; 478 break; 479 case ATKBD_SCR_8: 480 scroll = 8; 481 break; 482 case ATKBD_SCR_CLICK: 483 click = !atkbd->release; 484 break; 485 case ATKBD_SCR_LEFT: 486 hscroll = -1; 487 break; 488 case ATKBD_SCR_RIGHT: 489 hscroll = 1; 490 break; 491 default: 492 if (atkbd->release) { 493 value = 0; 494 atkbd->last = 0; 495 } else if (!atkbd->softrepeat && test_bit(keycode, dev->key)) { 496 /* Workaround Toshiba laptop multiple keypress */ 497 value = time_before(jiffies, atkbd->time) && atkbd->last == code ? 1 : 2; 498 } else { 499 value = 1; 500 atkbd->last = code; 501 atkbd->time = jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]) / 2; 502 } 503 504 input_event(dev, EV_KEY, keycode, value); 505 input_sync(dev); 506 507 if (value && test_bit(code, atkbd->force_release_mask)) { 508 input_report_key(dev, keycode, 0); 509 input_sync(dev); 510 } 511 } 512 513 if (atkbd->scroll) { 514 if (click != -1) 515 input_report_key(dev, BTN_MIDDLE, click); 516 input_report_rel(dev, REL_WHEEL, 517 atkbd->release ? -scroll : scroll); 518 input_report_rel(dev, REL_HWHEEL, hscroll); 519 input_sync(dev); 520 } 521 522 atkbd->release = false; 523 out: 524 return IRQ_HANDLED; 525 } 526 527 static int atkbd_set_repeat_rate(struct atkbd *atkbd) 528 { 529 const short period[32] = 530 { 33, 37, 42, 46, 50, 54, 58, 63, 67, 75, 83, 92, 100, 109, 116, 125, 531 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 }; 532 const short delay[4] = 533 { 250, 500, 750, 1000 }; 534 535 struct input_dev *dev = atkbd->dev; 536 unsigned char param; 537 int i = 0, j = 0; 538 539 while (i < ARRAY_SIZE(period) - 1 && period[i] < dev->rep[REP_PERIOD]) 540 i++; 541 dev->rep[REP_PERIOD] = period[i]; 542 543 while (j < ARRAY_SIZE(delay) - 1 && delay[j] < dev->rep[REP_DELAY]) 544 j++; 545 dev->rep[REP_DELAY] = delay[j]; 546 547 param = i | (j << 5); 548 return ps2_command(&atkbd->ps2dev, ¶m, ATKBD_CMD_SETREP); 549 } 550 551 static int atkbd_set_leds(struct atkbd *atkbd) 552 { 553 struct input_dev *dev = atkbd->dev; 554 unsigned char param[2]; 555 556 param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0) 557 | (test_bit(LED_NUML, dev->led) ? 2 : 0) 558 | (test_bit(LED_CAPSL, dev->led) ? 4 : 0); 559 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS)) 560 return -1; 561 562 if (atkbd->extra) { 563 param[0] = 0; 564 param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0) 565 | (test_bit(LED_SLEEP, dev->led) ? 0x02 : 0) 566 | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0) 567 | (test_bit(LED_MISC, dev->led) ? 0x10 : 0) 568 | (test_bit(LED_MUTE, dev->led) ? 0x20 : 0); 569 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS)) 570 return -1; 571 } 572 573 return 0; 574 } 575 576 /* 577 * atkbd_event_work() is used to complete processing of events that 578 * can not be processed by input_event() which is often called from 579 * interrupt context. 580 */ 581 582 static void atkbd_event_work(struct work_struct *work) 583 { 584 struct atkbd *atkbd = container_of(work, struct atkbd, event_work.work); 585 586 mutex_lock(&atkbd->mutex); 587 588 if (!atkbd->enabled) { 589 /* 590 * Serio ports are resumed asynchronously so while driver core 591 * thinks that device is already fully operational in reality 592 * it may not be ready yet. In this case we need to keep 593 * rescheduling till reconnect completes. 594 */ 595 schedule_delayed_work(&atkbd->event_work, 596 msecs_to_jiffies(100)); 597 } else { 598 if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask)) 599 atkbd_set_leds(atkbd); 600 601 if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask)) 602 atkbd_set_repeat_rate(atkbd); 603 } 604 605 mutex_unlock(&atkbd->mutex); 606 } 607 608 /* 609 * Schedule switch for execution. We need to throttle requests, 610 * otherwise keyboard may become unresponsive. 611 */ 612 static void atkbd_schedule_event_work(struct atkbd *atkbd, int event_bit) 613 { 614 unsigned long delay = msecs_to_jiffies(50); 615 616 if (time_after(jiffies, atkbd->event_jiffies + delay)) 617 delay = 0; 618 619 atkbd->event_jiffies = jiffies; 620 set_bit(event_bit, &atkbd->event_mask); 621 mb(); 622 schedule_delayed_work(&atkbd->event_work, delay); 623 } 624 625 /* 626 * Event callback from the input module. Events that change the state of 627 * the hardware are processed here. If action can not be performed in 628 * interrupt context it is offloaded to atkbd_event_work. 629 */ 630 631 static int atkbd_event(struct input_dev *dev, 632 unsigned int type, unsigned int code, int value) 633 { 634 struct atkbd *atkbd = input_get_drvdata(dev); 635 636 if (!atkbd->write) 637 return -1; 638 639 switch (type) { 640 641 case EV_LED: 642 atkbd_schedule_event_work(atkbd, ATKBD_LED_EVENT_BIT); 643 return 0; 644 645 case EV_REP: 646 if (!atkbd->softrepeat) 647 atkbd_schedule_event_work(atkbd, ATKBD_REP_EVENT_BIT); 648 return 0; 649 650 default: 651 return -1; 652 } 653 } 654 655 /* 656 * atkbd_enable() signals that interrupt handler is allowed to 657 * generate input events. 658 */ 659 660 static inline void atkbd_enable(struct atkbd *atkbd) 661 { 662 serio_pause_rx(atkbd->ps2dev.serio); 663 atkbd->enabled = true; 664 serio_continue_rx(atkbd->ps2dev.serio); 665 } 666 667 /* 668 * atkbd_disable() tells input handler that all incoming data except 669 * for ACKs and command response should be dropped. 670 */ 671 672 static inline void atkbd_disable(struct atkbd *atkbd) 673 { 674 serio_pause_rx(atkbd->ps2dev.serio); 675 atkbd->enabled = false; 676 serio_continue_rx(atkbd->ps2dev.serio); 677 } 678 679 static int atkbd_activate(struct atkbd *atkbd) 680 { 681 struct ps2dev *ps2dev = &atkbd->ps2dev; 682 683 /* 684 * Enable the keyboard to receive keystrokes. 685 */ 686 687 if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) { 688 dev_err(&ps2dev->serio->dev, 689 "Failed to enable keyboard on %s\n", 690 ps2dev->serio->phys); 691 return -1; 692 } 693 694 return 0; 695 } 696 697 /* 698 * atkbd_deactivate() resets and disables the keyboard from sending 699 * keystrokes. 700 */ 701 702 static void atkbd_deactivate(struct atkbd *atkbd) 703 { 704 struct ps2dev *ps2dev = &atkbd->ps2dev; 705 706 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_DIS)) 707 dev_err(&ps2dev->serio->dev, 708 "Failed to deactivate keyboard on %s\n", 709 ps2dev->serio->phys); 710 } 711 712 /* 713 * atkbd_probe() probes for an AT keyboard on a serio port. 714 */ 715 716 static int atkbd_probe(struct atkbd *atkbd) 717 { 718 struct ps2dev *ps2dev = &atkbd->ps2dev; 719 unsigned char param[2]; 720 721 /* 722 * Some systems, where the bit-twiddling when testing the io-lines of the 723 * controller may confuse the keyboard need a full reset of the keyboard. On 724 * these systems the BIOS also usually doesn't do it for us. 725 */ 726 727 if (atkbd_reset) 728 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT)) 729 dev_warn(&ps2dev->serio->dev, 730 "keyboard reset failed on %s\n", 731 ps2dev->serio->phys); 732 733 /* 734 * Then we check the keyboard ID. We should get 0xab83 under normal conditions. 735 * Some keyboards report different values, but the first byte is always 0xab or 736 * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this 737 * should make sure we don't try to set the LEDs on it. 738 */ 739 740 param[0] = param[1] = 0xa5; /* initialize with invalid values */ 741 if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) { 742 743 /* 744 * If the get ID command failed, we check if we can at least set the LEDs on 745 * the keyboard. This should work on every keyboard out there. It also turns 746 * the LEDs off, which we want anyway. 747 */ 748 param[0] = 0; 749 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS)) 750 return -1; 751 atkbd->id = 0xabba; 752 return 0; 753 } 754 755 if (!ps2_is_keyboard_id(param[0])) 756 return -1; 757 758 atkbd->id = (param[0] << 8) | param[1]; 759 760 if (atkbd->id == 0xaca1 && atkbd->translated) { 761 dev_err(&ps2dev->serio->dev, 762 "NCD terminal keyboards are only supported on non-translating controllers. " 763 "Use i8042.direct=1 to disable translation.\n"); 764 return -1; 765 } 766 767 /* 768 * Make sure nothing is coming from the keyboard and disturbs our 769 * internal state. 770 */ 771 atkbd_deactivate(atkbd); 772 773 return 0; 774 } 775 776 /* 777 * atkbd_select_set checks if a keyboard has a working Set 3 support, and 778 * sets it into that. Unfortunately there are keyboards that can be switched 779 * to Set 3, but don't work well in that (BTC Multimedia ...) 780 */ 781 782 static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra) 783 { 784 struct ps2dev *ps2dev = &atkbd->ps2dev; 785 unsigned char param[2]; 786 787 atkbd->extra = false; 788 /* 789 * For known special keyboards we can go ahead and set the correct set. 790 * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and 791 * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards. 792 */ 793 794 if (atkbd->translated) 795 return 2; 796 797 if (atkbd->id == 0xaca1) { 798 param[0] = 3; 799 ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET); 800 return 3; 801 } 802 803 if (allow_extra) { 804 param[0] = 0x71; 805 if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) { 806 atkbd->extra = true; 807 return 2; 808 } 809 } 810 811 if (atkbd_terminal) { 812 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MB); 813 return 3; 814 } 815 816 if (target_set != 3) 817 return 2; 818 819 if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) { 820 atkbd->id = param[0] << 8 | param[1]; 821 return 2; 822 } 823 824 param[0] = 3; 825 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET)) 826 return 2; 827 828 param[0] = 0; 829 if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET)) 830 return 2; 831 832 if (param[0] != 3) { 833 param[0] = 2; 834 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET)) 835 return 2; 836 } 837 838 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR); 839 840 return 3; 841 } 842 843 static int atkbd_reset_state(struct atkbd *atkbd) 844 { 845 struct ps2dev *ps2dev = &atkbd->ps2dev; 846 unsigned char param[1]; 847 848 /* 849 * Set the LEDs to a predefined state (all off). 850 */ 851 852 param[0] = 0; 853 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS)) 854 return -1; 855 856 /* 857 * Set autorepeat to fastest possible. 858 */ 859 860 param[0] = 0; 861 if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP)) 862 return -1; 863 864 return 0; 865 } 866 867 /* 868 * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a 869 * reboot. 870 */ 871 872 static void atkbd_cleanup(struct serio *serio) 873 { 874 struct atkbd *atkbd = serio_get_drvdata(serio); 875 876 atkbd_disable(atkbd); 877 ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_DEF); 878 } 879 880 881 /* 882 * atkbd_disconnect() closes and frees. 883 */ 884 885 static void atkbd_disconnect(struct serio *serio) 886 { 887 struct atkbd *atkbd = serio_get_drvdata(serio); 888 889 sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group); 890 891 atkbd_disable(atkbd); 892 893 input_unregister_device(atkbd->dev); 894 895 /* 896 * Make sure we don't have a command in flight. 897 * Note that since atkbd->enabled is false event work will keep 898 * rescheduling itself until it gets canceled and will not try 899 * accessing freed input device or serio port. 900 */ 901 cancel_delayed_work_sync(&atkbd->event_work); 902 903 serio_close(serio); 904 serio_set_drvdata(serio, NULL); 905 kfree(atkbd); 906 } 907 908 /* 909 * generate release events for the keycodes given in data 910 */ 911 static void atkbd_apply_forced_release_keylist(struct atkbd* atkbd, 912 const void *data) 913 { 914 const unsigned int *keys = data; 915 unsigned int i; 916 917 if (atkbd->set == 2) 918 for (i = 0; keys[i] != -1U; i++) 919 __set_bit(keys[i], atkbd->force_release_mask); 920 } 921 922 /* 923 * Most special keys (Fn+F?) on Dell laptops do not generate release 924 * events so we have to do it ourselves. 925 */ 926 static unsigned int atkbd_dell_laptop_forced_release_keys[] = { 927 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8f, 0x93, -1U 928 }; 929 930 /* 931 * Perform fixup for HP system that doesn't generate release 932 * for its video switch 933 */ 934 static unsigned int atkbd_hp_forced_release_keys[] = { 935 0x94, -1U 936 }; 937 938 /* 939 * Samsung NC10,NC20 with Fn+F? key release not working 940 */ 941 static unsigned int atkbd_samsung_forced_release_keys[] = { 942 0x82, 0x83, 0x84, 0x86, 0x88, 0x89, 0xb3, 0xf7, 0xf9, -1U 943 }; 944 945 /* 946 * Amilo Pi 3525 key release for Fn+Volume keys not working 947 */ 948 static unsigned int atkbd_amilo_pi3525_forced_release_keys[] = { 949 0x20, 0xa0, 0x2e, 0xae, 0x30, 0xb0, -1U 950 }; 951 952 /* 953 * Amilo Xi 3650 key release for light touch bar not working 954 */ 955 static unsigned int atkbd_amilo_xi3650_forced_release_keys[] = { 956 0x67, 0xed, 0x90, 0xa2, 0x99, 0xa4, 0xae, 0xb0, -1U 957 }; 958 959 /* 960 * Soltech TA12 system with broken key release on volume keys and mute key 961 */ 962 static unsigned int atkdb_soltech_ta12_forced_release_keys[] = { 963 0xa0, 0xae, 0xb0, -1U 964 }; 965 966 /* 967 * Many notebooks don't send key release event for volume up/down 968 * keys, with key list below common among them 969 */ 970 static unsigned int atkbd_volume_forced_release_keys[] = { 971 0xae, 0xb0, -1U 972 }; 973 974 /* 975 * OQO 01+ multimedia keys (64--66) generate e0 6x upon release whereas 976 * they should be generating e4-e6 (0x80 | code). 977 */ 978 static unsigned int atkbd_oqo_01plus_scancode_fixup(struct atkbd *atkbd, 979 unsigned int code) 980 { 981 if (atkbd->translated && atkbd->emul == 1 && 982 (code == 0x64 || code == 0x65 || code == 0x66)) { 983 atkbd->emul = 0; 984 code |= 0x80; 985 } 986 987 return code; 988 } 989 990 /* 991 * atkbd_set_keycode_table() initializes keyboard's keycode table 992 * according to the selected scancode set 993 */ 994 995 static void atkbd_set_keycode_table(struct atkbd *atkbd) 996 { 997 unsigned int scancode; 998 int i, j; 999 1000 memset(atkbd->keycode, 0, sizeof(atkbd->keycode)); 1001 bitmap_zero(atkbd->force_release_mask, ATKBD_KEYMAP_SIZE); 1002 1003 if (atkbd->translated) { 1004 for (i = 0; i < 128; i++) { 1005 scancode = atkbd_unxlate_table[i]; 1006 atkbd->keycode[i] = atkbd_set2_keycode[scancode]; 1007 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80]; 1008 if (atkbd->scroll) 1009 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++) 1010 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2) 1011 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode; 1012 } 1013 } else if (atkbd->set == 3) { 1014 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode)); 1015 } else { 1016 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode)); 1017 1018 if (atkbd->scroll) 1019 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) { 1020 scancode = atkbd_scroll_keys[i].set2; 1021 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode; 1022 } 1023 } 1024 1025 /* 1026 * HANGEUL and HANJA keys do not send release events so we need to 1027 * generate such events ourselves 1028 */ 1029 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL); 1030 atkbd->keycode[scancode] = KEY_HANGEUL; 1031 __set_bit(scancode, atkbd->force_release_mask); 1032 1033 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA); 1034 atkbd->keycode[scancode] = KEY_HANJA; 1035 __set_bit(scancode, atkbd->force_release_mask); 1036 1037 /* 1038 * Perform additional fixups 1039 */ 1040 if (atkbd_platform_fixup) 1041 atkbd_platform_fixup(atkbd, atkbd_platform_fixup_data); 1042 } 1043 1044 /* 1045 * atkbd_set_device_attrs() sets up keyboard's input device structure 1046 */ 1047 1048 static void atkbd_set_device_attrs(struct atkbd *atkbd) 1049 { 1050 struct input_dev *input_dev = atkbd->dev; 1051 int i; 1052 1053 if (atkbd->extra) 1054 snprintf(atkbd->name, sizeof(atkbd->name), 1055 "AT Set 2 Extra keyboard"); 1056 else 1057 snprintf(atkbd->name, sizeof(atkbd->name), 1058 "AT %s Set %d keyboard", 1059 atkbd->translated ? "Translated" : "Raw", atkbd->set); 1060 1061 snprintf(atkbd->phys, sizeof(atkbd->phys), 1062 "%s/input0", atkbd->ps2dev.serio->phys); 1063 1064 input_dev->name = atkbd->name; 1065 input_dev->phys = atkbd->phys; 1066 input_dev->id.bustype = BUS_I8042; 1067 input_dev->id.vendor = 0x0001; 1068 input_dev->id.product = atkbd->translated ? 1 : atkbd->set; 1069 input_dev->id.version = atkbd->id; 1070 input_dev->event = atkbd_event; 1071 input_dev->dev.parent = &atkbd->ps2dev.serio->dev; 1072 1073 input_set_drvdata(input_dev, atkbd); 1074 1075 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | 1076 BIT_MASK(EV_MSC); 1077 1078 if (atkbd->write) { 1079 input_dev->evbit[0] |= BIT_MASK(EV_LED); 1080 input_dev->ledbit[0] = BIT_MASK(LED_NUML) | 1081 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL); 1082 } 1083 1084 if (atkbd->extra) 1085 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) | 1086 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) | 1087 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC); 1088 1089 if (!atkbd->softrepeat) { 1090 input_dev->rep[REP_DELAY] = 250; 1091 input_dev->rep[REP_PERIOD] = 33; 1092 } 1093 1094 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) : 1095 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN); 1096 1097 if (atkbd->scroll) { 1098 input_dev->evbit[0] |= BIT_MASK(EV_REL); 1099 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) | 1100 BIT_MASK(REL_HWHEEL); 1101 __set_bit(BTN_MIDDLE, input_dev->keybit); 1102 } 1103 1104 input_dev->keycode = atkbd->keycode; 1105 input_dev->keycodesize = sizeof(unsigned short); 1106 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode); 1107 1108 for (i = 0; i < ATKBD_KEYMAP_SIZE; i++) { 1109 if (atkbd->keycode[i] != KEY_RESERVED && 1110 atkbd->keycode[i] != ATKBD_KEY_NULL && 1111 atkbd->keycode[i] < ATKBD_SPECIAL) { 1112 __set_bit(atkbd->keycode[i], input_dev->keybit); 1113 } 1114 } 1115 } 1116 1117 /* 1118 * atkbd_connect() is called when the serio module finds an interface 1119 * that isn't handled yet by an appropriate device driver. We check if 1120 * there is an AT keyboard out there and if yes, we register ourselves 1121 * to the input module. 1122 */ 1123 1124 static int atkbd_connect(struct serio *serio, struct serio_driver *drv) 1125 { 1126 struct atkbd *atkbd; 1127 struct input_dev *dev; 1128 int err = -ENOMEM; 1129 1130 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL); 1131 dev = input_allocate_device(); 1132 if (!atkbd || !dev) 1133 goto fail1; 1134 1135 atkbd->dev = dev; 1136 ps2_init(&atkbd->ps2dev, serio); 1137 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work); 1138 mutex_init(&atkbd->mutex); 1139 1140 switch (serio->id.type) { 1141 1142 case SERIO_8042_XL: 1143 atkbd->translated = true; 1144 /* Fall through */ 1145 1146 case SERIO_8042: 1147 if (serio->write) 1148 atkbd->write = true; 1149 break; 1150 } 1151 1152 atkbd->softraw = atkbd_softraw; 1153 atkbd->softrepeat = atkbd_softrepeat; 1154 atkbd->scroll = atkbd_scroll; 1155 1156 if (atkbd->softrepeat) 1157 atkbd->softraw = true; 1158 1159 serio_set_drvdata(serio, atkbd); 1160 1161 err = serio_open(serio, drv); 1162 if (err) 1163 goto fail2; 1164 1165 if (atkbd->write) { 1166 1167 if (atkbd_probe(atkbd)) { 1168 err = -ENODEV; 1169 goto fail3; 1170 } 1171 1172 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra); 1173 atkbd_reset_state(atkbd); 1174 1175 } else { 1176 atkbd->set = 2; 1177 atkbd->id = 0xab00; 1178 } 1179 1180 atkbd_set_keycode_table(atkbd); 1181 atkbd_set_device_attrs(atkbd); 1182 1183 err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group); 1184 if (err) 1185 goto fail3; 1186 1187 atkbd_enable(atkbd); 1188 if (serio->write) 1189 atkbd_activate(atkbd); 1190 1191 err = input_register_device(atkbd->dev); 1192 if (err) 1193 goto fail4; 1194 1195 return 0; 1196 1197 fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group); 1198 fail3: serio_close(serio); 1199 fail2: serio_set_drvdata(serio, NULL); 1200 fail1: input_free_device(dev); 1201 kfree(atkbd); 1202 return err; 1203 } 1204 1205 /* 1206 * atkbd_reconnect() tries to restore keyboard into a sane state and is 1207 * most likely called on resume. 1208 */ 1209 1210 static int atkbd_reconnect(struct serio *serio) 1211 { 1212 struct atkbd *atkbd = serio_get_drvdata(serio); 1213 struct serio_driver *drv = serio->drv; 1214 int retval = -1; 1215 1216 if (!atkbd || !drv) { 1217 dev_dbg(&serio->dev, 1218 "reconnect request, but serio is disconnected, ignoring...\n"); 1219 return -1; 1220 } 1221 1222 mutex_lock(&atkbd->mutex); 1223 1224 atkbd_disable(atkbd); 1225 1226 if (atkbd->write) { 1227 if (atkbd_probe(atkbd)) 1228 goto out; 1229 1230 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra)) 1231 goto out; 1232 1233 /* 1234 * Restore LED state and repeat rate. While input core 1235 * will do this for us at resume time reconnect may happen 1236 * because user requested it via sysfs or simply because 1237 * keyboard was unplugged and plugged in again so we need 1238 * to do it ourselves here. 1239 */ 1240 atkbd_set_leds(atkbd); 1241 if (!atkbd->softrepeat) 1242 atkbd_set_repeat_rate(atkbd); 1243 1244 } 1245 1246 /* 1247 * Reset our state machine in case reconnect happened in the middle 1248 * of multi-byte scancode. 1249 */ 1250 atkbd->xl_bit = 0; 1251 atkbd->emul = 0; 1252 1253 atkbd_enable(atkbd); 1254 if (atkbd->write) 1255 atkbd_activate(atkbd); 1256 1257 retval = 0; 1258 1259 out: 1260 mutex_unlock(&atkbd->mutex); 1261 return retval; 1262 } 1263 1264 static struct serio_device_id atkbd_serio_ids[] = { 1265 { 1266 .type = SERIO_8042, 1267 .proto = SERIO_ANY, 1268 .id = SERIO_ANY, 1269 .extra = SERIO_ANY, 1270 }, 1271 { 1272 .type = SERIO_8042_XL, 1273 .proto = SERIO_ANY, 1274 .id = SERIO_ANY, 1275 .extra = SERIO_ANY, 1276 }, 1277 { 1278 .type = SERIO_RS232, 1279 .proto = SERIO_PS2SER, 1280 .id = SERIO_ANY, 1281 .extra = SERIO_ANY, 1282 }, 1283 { 0 } 1284 }; 1285 1286 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids); 1287 1288 static struct serio_driver atkbd_drv = { 1289 .driver = { 1290 .name = "atkbd", 1291 }, 1292 .description = DRIVER_DESC, 1293 .id_table = atkbd_serio_ids, 1294 .interrupt = atkbd_interrupt, 1295 .connect = atkbd_connect, 1296 .reconnect = atkbd_reconnect, 1297 .disconnect = atkbd_disconnect, 1298 .cleanup = atkbd_cleanup, 1299 }; 1300 1301 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf, 1302 ssize_t (*handler)(struct atkbd *, char *)) 1303 { 1304 struct serio *serio = to_serio_port(dev); 1305 struct atkbd *atkbd = serio_get_drvdata(serio); 1306 1307 return handler(atkbd, buf); 1308 } 1309 1310 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count, 1311 ssize_t (*handler)(struct atkbd *, const char *, size_t)) 1312 { 1313 struct serio *serio = to_serio_port(dev); 1314 struct atkbd *atkbd = serio_get_drvdata(serio); 1315 int retval; 1316 1317 retval = mutex_lock_interruptible(&atkbd->mutex); 1318 if (retval) 1319 return retval; 1320 1321 atkbd_disable(atkbd); 1322 retval = handler(atkbd, buf, count); 1323 atkbd_enable(atkbd); 1324 1325 mutex_unlock(&atkbd->mutex); 1326 1327 return retval; 1328 } 1329 1330 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf) 1331 { 1332 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0); 1333 } 1334 1335 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count) 1336 { 1337 struct input_dev *old_dev, *new_dev; 1338 unsigned int value; 1339 int err; 1340 bool old_extra; 1341 unsigned char old_set; 1342 1343 if (!atkbd->write) 1344 return -EIO; 1345 1346 err = kstrtouint(buf, 10, &value); 1347 if (err) 1348 return err; 1349 1350 if (value > 1) 1351 return -EINVAL; 1352 1353 if (atkbd->extra != value) { 1354 /* 1355 * Since device's properties will change we need to 1356 * unregister old device. But allocate and register 1357 * new one first to make sure we have it. 1358 */ 1359 old_dev = atkbd->dev; 1360 old_extra = atkbd->extra; 1361 old_set = atkbd->set; 1362 1363 new_dev = input_allocate_device(); 1364 if (!new_dev) 1365 return -ENOMEM; 1366 1367 atkbd->dev = new_dev; 1368 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value); 1369 atkbd_reset_state(atkbd); 1370 atkbd_activate(atkbd); 1371 atkbd_set_keycode_table(atkbd); 1372 atkbd_set_device_attrs(atkbd); 1373 1374 err = input_register_device(atkbd->dev); 1375 if (err) { 1376 input_free_device(new_dev); 1377 1378 atkbd->dev = old_dev; 1379 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra); 1380 atkbd_set_keycode_table(atkbd); 1381 atkbd_set_device_attrs(atkbd); 1382 1383 return err; 1384 } 1385 input_unregister_device(old_dev); 1386 1387 } 1388 return count; 1389 } 1390 1391 static ssize_t atkbd_show_force_release(struct atkbd *atkbd, char *buf) 1392 { 1393 size_t len = bitmap_scnlistprintf(buf, PAGE_SIZE - 2, 1394 atkbd->force_release_mask, ATKBD_KEYMAP_SIZE); 1395 1396 buf[len++] = '\n'; 1397 buf[len] = '\0'; 1398 1399 return len; 1400 } 1401 1402 static ssize_t atkbd_set_force_release(struct atkbd *atkbd, 1403 const char *buf, size_t count) 1404 { 1405 /* 64 bytes on stack should be acceptable */ 1406 DECLARE_BITMAP(new_mask, ATKBD_KEYMAP_SIZE); 1407 int err; 1408 1409 err = bitmap_parselist(buf, new_mask, ATKBD_KEYMAP_SIZE); 1410 if (err) 1411 return err; 1412 1413 memcpy(atkbd->force_release_mask, new_mask, sizeof(atkbd->force_release_mask)); 1414 return count; 1415 } 1416 1417 1418 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf) 1419 { 1420 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0); 1421 } 1422 1423 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count) 1424 { 1425 struct input_dev *old_dev, *new_dev; 1426 unsigned int value; 1427 int err; 1428 bool old_scroll; 1429 1430 err = kstrtouint(buf, 10, &value); 1431 if (err) 1432 return err; 1433 1434 if (value > 1) 1435 return -EINVAL; 1436 1437 if (atkbd->scroll != value) { 1438 old_dev = atkbd->dev; 1439 old_scroll = atkbd->scroll; 1440 1441 new_dev = input_allocate_device(); 1442 if (!new_dev) 1443 return -ENOMEM; 1444 1445 atkbd->dev = new_dev; 1446 atkbd->scroll = value; 1447 atkbd_set_keycode_table(atkbd); 1448 atkbd_set_device_attrs(atkbd); 1449 1450 err = input_register_device(atkbd->dev); 1451 if (err) { 1452 input_free_device(new_dev); 1453 1454 atkbd->scroll = old_scroll; 1455 atkbd->dev = old_dev; 1456 atkbd_set_keycode_table(atkbd); 1457 atkbd_set_device_attrs(atkbd); 1458 1459 return err; 1460 } 1461 input_unregister_device(old_dev); 1462 } 1463 return count; 1464 } 1465 1466 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf) 1467 { 1468 return sprintf(buf, "%d\n", atkbd->set); 1469 } 1470 1471 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count) 1472 { 1473 struct input_dev *old_dev, *new_dev; 1474 unsigned int value; 1475 int err; 1476 unsigned char old_set; 1477 bool old_extra; 1478 1479 if (!atkbd->write) 1480 return -EIO; 1481 1482 err = kstrtouint(buf, 10, &value); 1483 if (err) 1484 return err; 1485 1486 if (value != 2 && value != 3) 1487 return -EINVAL; 1488 1489 if (atkbd->set != value) { 1490 old_dev = atkbd->dev; 1491 old_extra = atkbd->extra; 1492 old_set = atkbd->set; 1493 1494 new_dev = input_allocate_device(); 1495 if (!new_dev) 1496 return -ENOMEM; 1497 1498 atkbd->dev = new_dev; 1499 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra); 1500 atkbd_reset_state(atkbd); 1501 atkbd_activate(atkbd); 1502 atkbd_set_keycode_table(atkbd); 1503 atkbd_set_device_attrs(atkbd); 1504 1505 err = input_register_device(atkbd->dev); 1506 if (err) { 1507 input_free_device(new_dev); 1508 1509 atkbd->dev = old_dev; 1510 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra); 1511 atkbd_set_keycode_table(atkbd); 1512 atkbd_set_device_attrs(atkbd); 1513 1514 return err; 1515 } 1516 input_unregister_device(old_dev); 1517 } 1518 return count; 1519 } 1520 1521 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf) 1522 { 1523 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0); 1524 } 1525 1526 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count) 1527 { 1528 struct input_dev *old_dev, *new_dev; 1529 unsigned int value; 1530 int err; 1531 bool old_softrepeat, old_softraw; 1532 1533 if (!atkbd->write) 1534 return -EIO; 1535 1536 err = kstrtouint(buf, 10, &value); 1537 if (err) 1538 return err; 1539 1540 if (value > 1) 1541 return -EINVAL; 1542 1543 if (atkbd->softrepeat != value) { 1544 old_dev = atkbd->dev; 1545 old_softrepeat = atkbd->softrepeat; 1546 old_softraw = atkbd->softraw; 1547 1548 new_dev = input_allocate_device(); 1549 if (!new_dev) 1550 return -ENOMEM; 1551 1552 atkbd->dev = new_dev; 1553 atkbd->softrepeat = value; 1554 if (atkbd->softrepeat) 1555 atkbd->softraw = true; 1556 atkbd_set_device_attrs(atkbd); 1557 1558 err = input_register_device(atkbd->dev); 1559 if (err) { 1560 input_free_device(new_dev); 1561 1562 atkbd->dev = old_dev; 1563 atkbd->softrepeat = old_softrepeat; 1564 atkbd->softraw = old_softraw; 1565 atkbd_set_device_attrs(atkbd); 1566 1567 return err; 1568 } 1569 input_unregister_device(old_dev); 1570 } 1571 return count; 1572 } 1573 1574 1575 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf) 1576 { 1577 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0); 1578 } 1579 1580 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count) 1581 { 1582 struct input_dev *old_dev, *new_dev; 1583 unsigned int value; 1584 int err; 1585 bool old_softraw; 1586 1587 err = kstrtouint(buf, 10, &value); 1588 if (err) 1589 return err; 1590 1591 if (value > 1) 1592 return -EINVAL; 1593 1594 if (atkbd->softraw != value) { 1595 old_dev = atkbd->dev; 1596 old_softraw = atkbd->softraw; 1597 1598 new_dev = input_allocate_device(); 1599 if (!new_dev) 1600 return -ENOMEM; 1601 1602 atkbd->dev = new_dev; 1603 atkbd->softraw = value; 1604 atkbd_set_device_attrs(atkbd); 1605 1606 err = input_register_device(atkbd->dev); 1607 if (err) { 1608 input_free_device(new_dev); 1609 1610 atkbd->dev = old_dev; 1611 atkbd->softraw = old_softraw; 1612 atkbd_set_device_attrs(atkbd); 1613 1614 return err; 1615 } 1616 input_unregister_device(old_dev); 1617 } 1618 return count; 1619 } 1620 1621 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf) 1622 { 1623 return sprintf(buf, "%lu\n", atkbd->err_count); 1624 } 1625 1626 static int __init atkbd_setup_forced_release(const struct dmi_system_id *id) 1627 { 1628 atkbd_platform_fixup = atkbd_apply_forced_release_keylist; 1629 atkbd_platform_fixup_data = id->driver_data; 1630 1631 return 1; 1632 } 1633 1634 static int __init atkbd_setup_scancode_fixup(const struct dmi_system_id *id) 1635 { 1636 atkbd_platform_scancode_fixup = id->driver_data; 1637 1638 return 1; 1639 } 1640 1641 static const struct dmi_system_id atkbd_dmi_quirk_table[] __initconst = { 1642 { 1643 .matches = { 1644 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 1645 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */ 1646 }, 1647 .callback = atkbd_setup_forced_release, 1648 .driver_data = atkbd_dell_laptop_forced_release_keys, 1649 }, 1650 { 1651 .matches = { 1652 DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"), 1653 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */ 1654 }, 1655 .callback = atkbd_setup_forced_release, 1656 .driver_data = atkbd_dell_laptop_forced_release_keys, 1657 }, 1658 { 1659 .matches = { 1660 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1661 DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"), 1662 }, 1663 .callback = atkbd_setup_forced_release, 1664 .driver_data = atkbd_hp_forced_release_keys, 1665 }, 1666 { 1667 .matches = { 1668 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1669 DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion ZV6100"), 1670 }, 1671 .callback = atkbd_setup_forced_release, 1672 .driver_data = atkbd_volume_forced_release_keys, 1673 }, 1674 { 1675 .matches = { 1676 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1677 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4000"), 1678 }, 1679 .callback = atkbd_setup_forced_release, 1680 .driver_data = atkbd_volume_forced_release_keys, 1681 }, 1682 { 1683 .matches = { 1684 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1685 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4100"), 1686 }, 1687 .callback = atkbd_setup_forced_release, 1688 .driver_data = atkbd_volume_forced_release_keys, 1689 }, 1690 { 1691 .matches = { 1692 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1693 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4200"), 1694 }, 1695 .callback = atkbd_setup_forced_release, 1696 .driver_data = atkbd_volume_forced_release_keys, 1697 }, 1698 { 1699 /* Inventec Symphony */ 1700 .matches = { 1701 DMI_MATCH(DMI_SYS_VENDOR, "INVENTEC"), 1702 DMI_MATCH(DMI_PRODUCT_NAME, "SYMPHONY 6.0/7.0"), 1703 }, 1704 .callback = atkbd_setup_forced_release, 1705 .driver_data = atkbd_volume_forced_release_keys, 1706 }, 1707 { 1708 /* Samsung NC10 */ 1709 .matches = { 1710 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), 1711 DMI_MATCH(DMI_PRODUCT_NAME, "NC10"), 1712 }, 1713 .callback = atkbd_setup_forced_release, 1714 .driver_data = atkbd_samsung_forced_release_keys, 1715 }, 1716 { 1717 /* Samsung NC20 */ 1718 .matches = { 1719 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), 1720 DMI_MATCH(DMI_PRODUCT_NAME, "NC20"), 1721 }, 1722 .callback = atkbd_setup_forced_release, 1723 .driver_data = atkbd_samsung_forced_release_keys, 1724 }, 1725 { 1726 /* Samsung SQ45S70S */ 1727 .matches = { 1728 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."), 1729 DMI_MATCH(DMI_PRODUCT_NAME, "SQ45S70S"), 1730 }, 1731 .callback = atkbd_setup_forced_release, 1732 .driver_data = atkbd_samsung_forced_release_keys, 1733 }, 1734 { 1735 /* Fujitsu Amilo PA 1510 */ 1736 .matches = { 1737 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1738 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 1510"), 1739 }, 1740 .callback = atkbd_setup_forced_release, 1741 .driver_data = atkbd_volume_forced_release_keys, 1742 }, 1743 { 1744 /* Fujitsu Amilo Pi 3525 */ 1745 .matches = { 1746 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1747 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 3525"), 1748 }, 1749 .callback = atkbd_setup_forced_release, 1750 .driver_data = atkbd_amilo_pi3525_forced_release_keys, 1751 }, 1752 { 1753 /* Fujitsu Amilo Xi 3650 */ 1754 .matches = { 1755 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"), 1756 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 3650"), 1757 }, 1758 .callback = atkbd_setup_forced_release, 1759 .driver_data = atkbd_amilo_xi3650_forced_release_keys, 1760 }, 1761 { 1762 .matches = { 1763 DMI_MATCH(DMI_SYS_VENDOR, "Soltech Corporation"), 1764 DMI_MATCH(DMI_PRODUCT_NAME, "TA12"), 1765 }, 1766 .callback = atkbd_setup_forced_release, 1767 .driver_data = atkdb_soltech_ta12_forced_release_keys, 1768 }, 1769 { 1770 /* OQO Model 01+ */ 1771 .matches = { 1772 DMI_MATCH(DMI_SYS_VENDOR, "OQO"), 1773 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPTO"), 1774 }, 1775 .callback = atkbd_setup_scancode_fixup, 1776 .driver_data = atkbd_oqo_01plus_scancode_fixup, 1777 }, 1778 { } 1779 }; 1780 1781 static int __init atkbd_init(void) 1782 { 1783 dmi_check_system(atkbd_dmi_quirk_table); 1784 1785 return serio_register_driver(&atkbd_drv); 1786 } 1787 1788 static void __exit atkbd_exit(void) 1789 { 1790 serio_unregister_driver(&atkbd_drv); 1791 } 1792 1793 module_init(atkbd_init); 1794 module_exit(atkbd_exit); 1795