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