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 unsigned char 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 unsigned char 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 unsigned char 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 248 165 166 #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 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 char 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 char 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 flush_scheduled_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 Latitudes do not generate release 838 * events so we have to do it ourselves. 839 */ 840 static void atkbd_latitude_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 * atkbd_set_keycode_table() initializes keyboard's keycode table 855 * according to the selected scancode set 856 */ 857 858 static void atkbd_set_keycode_table(struct atkbd *atkbd) 859 { 860 unsigned int scancode; 861 int i, j; 862 863 memset(atkbd->keycode, 0, sizeof(atkbd->keycode)); 864 bitmap_zero(atkbd->force_release_mask, 512); 865 866 if (atkbd->translated) { 867 for (i = 0; i < 128; i++) { 868 scancode = atkbd_unxlate_table[i]; 869 atkbd->keycode[i] = atkbd_set2_keycode[scancode]; 870 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80]; 871 if (atkbd->scroll) 872 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++) 873 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2) 874 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode; 875 } 876 } else if (atkbd->set == 3) { 877 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode)); 878 } else { 879 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode)); 880 881 if (atkbd->scroll) 882 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) { 883 scancode = atkbd_scroll_keys[i].set2; 884 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode; 885 } 886 } 887 888 /* 889 * HANGEUL and HANJA keys do not send release events so we need to 890 * generate such events ourselves 891 */ 892 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL); 893 atkbd->keycode[scancode] = KEY_HANGEUL; 894 __set_bit(scancode, atkbd->force_release_mask); 895 896 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA); 897 atkbd->keycode[scancode] = KEY_HANJA; 898 __set_bit(scancode, atkbd->force_release_mask); 899 900 /* 901 * Perform additional fixups 902 */ 903 if (atkbd_platform_fixup) 904 atkbd_platform_fixup(atkbd); 905 } 906 907 /* 908 * atkbd_set_device_attrs() sets up keyboard's input device structure 909 */ 910 911 static void atkbd_set_device_attrs(struct atkbd *atkbd) 912 { 913 struct input_dev *input_dev = atkbd->dev; 914 int i; 915 916 if (atkbd->extra) 917 snprintf(atkbd->name, sizeof(atkbd->name), 918 "AT Set 2 Extra keyboard"); 919 else 920 snprintf(atkbd->name, sizeof(atkbd->name), 921 "AT %s Set %d keyboard", 922 atkbd->translated ? "Translated" : "Raw", atkbd->set); 923 924 snprintf(atkbd->phys, sizeof(atkbd->phys), 925 "%s/input0", atkbd->ps2dev.serio->phys); 926 927 input_dev->name = atkbd->name; 928 input_dev->phys = atkbd->phys; 929 input_dev->id.bustype = BUS_I8042; 930 input_dev->id.vendor = 0x0001; 931 input_dev->id.product = atkbd->translated ? 1 : atkbd->set; 932 input_dev->id.version = atkbd->id; 933 input_dev->event = atkbd_event; 934 input_dev->dev.parent = &atkbd->ps2dev.serio->dev; 935 936 input_set_drvdata(input_dev, atkbd); 937 938 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | 939 BIT_MASK(EV_MSC); 940 941 if (atkbd->write) { 942 input_dev->evbit[0] |= BIT_MASK(EV_LED); 943 input_dev->ledbit[0] = BIT_MASK(LED_NUML) | 944 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL); 945 } 946 947 if (atkbd->extra) 948 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) | 949 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) | 950 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC); 951 952 if (!atkbd->softrepeat) { 953 input_dev->rep[REP_DELAY] = 250; 954 input_dev->rep[REP_PERIOD] = 33; 955 } 956 957 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) : 958 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN); 959 960 if (atkbd->scroll) { 961 input_dev->evbit[0] |= BIT_MASK(EV_REL); 962 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) | 963 BIT_MASK(REL_HWHEEL); 964 set_bit(BTN_MIDDLE, input_dev->keybit); 965 } 966 967 input_dev->keycode = atkbd->keycode; 968 input_dev->keycodesize = sizeof(unsigned char); 969 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode); 970 971 for (i = 0; i < 512; i++) 972 if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL) 973 set_bit(atkbd->keycode[i], input_dev->keybit); 974 } 975 976 /* 977 * atkbd_connect() is called when the serio module finds an interface 978 * that isn't handled yet by an appropriate device driver. We check if 979 * there is an AT keyboard out there and if yes, we register ourselves 980 * to the input module. 981 */ 982 983 static int atkbd_connect(struct serio *serio, struct serio_driver *drv) 984 { 985 struct atkbd *atkbd; 986 struct input_dev *dev; 987 int err = -ENOMEM; 988 989 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL); 990 dev = input_allocate_device(); 991 if (!atkbd || !dev) 992 goto fail1; 993 994 atkbd->dev = dev; 995 ps2_init(&atkbd->ps2dev, serio); 996 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work); 997 mutex_init(&atkbd->event_mutex); 998 999 switch (serio->id.type) { 1000 1001 case SERIO_8042_XL: 1002 atkbd->translated = 1; 1003 case SERIO_8042: 1004 if (serio->write) 1005 atkbd->write = 1; 1006 break; 1007 } 1008 1009 atkbd->softraw = atkbd_softraw; 1010 atkbd->softrepeat = atkbd_softrepeat; 1011 atkbd->scroll = atkbd_scroll; 1012 1013 if (atkbd->softrepeat) 1014 atkbd->softraw = 1; 1015 1016 serio_set_drvdata(serio, atkbd); 1017 1018 err = serio_open(serio, drv); 1019 if (err) 1020 goto fail2; 1021 1022 if (atkbd->write) { 1023 1024 if (atkbd_probe(atkbd)) { 1025 err = -ENODEV; 1026 goto fail3; 1027 } 1028 1029 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra); 1030 atkbd_activate(atkbd); 1031 1032 } else { 1033 atkbd->set = 2; 1034 atkbd->id = 0xab00; 1035 } 1036 1037 atkbd_set_keycode_table(atkbd); 1038 atkbd_set_device_attrs(atkbd); 1039 1040 err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group); 1041 if (err) 1042 goto fail3; 1043 1044 atkbd_enable(atkbd); 1045 1046 err = input_register_device(atkbd->dev); 1047 if (err) 1048 goto fail4; 1049 1050 return 0; 1051 1052 fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group); 1053 fail3: serio_close(serio); 1054 fail2: serio_set_drvdata(serio, NULL); 1055 fail1: input_free_device(dev); 1056 kfree(atkbd); 1057 return err; 1058 } 1059 1060 /* 1061 * atkbd_reconnect() tries to restore keyboard into a sane state and is 1062 * most likely called on resume. 1063 */ 1064 1065 static int atkbd_reconnect(struct serio *serio) 1066 { 1067 struct atkbd *atkbd = serio_get_drvdata(serio); 1068 struct serio_driver *drv = serio->drv; 1069 1070 if (!atkbd || !drv) { 1071 printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n"); 1072 return -1; 1073 } 1074 1075 atkbd_disable(atkbd); 1076 1077 if (atkbd->write) { 1078 if (atkbd_probe(atkbd)) 1079 return -1; 1080 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra)) 1081 return -1; 1082 1083 atkbd_activate(atkbd); 1084 1085 /* 1086 * Restore repeat rate and LEDs (that were reset by atkbd_activate) 1087 * to pre-resume state 1088 */ 1089 if (!atkbd->softrepeat) 1090 atkbd_set_repeat_rate(atkbd); 1091 atkbd_set_leds(atkbd); 1092 } 1093 1094 atkbd_enable(atkbd); 1095 1096 return 0; 1097 } 1098 1099 static struct serio_device_id atkbd_serio_ids[] = { 1100 { 1101 .type = SERIO_8042, 1102 .proto = SERIO_ANY, 1103 .id = SERIO_ANY, 1104 .extra = SERIO_ANY, 1105 }, 1106 { 1107 .type = SERIO_8042_XL, 1108 .proto = SERIO_ANY, 1109 .id = SERIO_ANY, 1110 .extra = SERIO_ANY, 1111 }, 1112 { 1113 .type = SERIO_RS232, 1114 .proto = SERIO_PS2SER, 1115 .id = SERIO_ANY, 1116 .extra = SERIO_ANY, 1117 }, 1118 { 0 } 1119 }; 1120 1121 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids); 1122 1123 static struct serio_driver atkbd_drv = { 1124 .driver = { 1125 .name = "atkbd", 1126 }, 1127 .description = DRIVER_DESC, 1128 .id_table = atkbd_serio_ids, 1129 .interrupt = atkbd_interrupt, 1130 .connect = atkbd_connect, 1131 .reconnect = atkbd_reconnect, 1132 .disconnect = atkbd_disconnect, 1133 .cleanup = atkbd_cleanup, 1134 }; 1135 1136 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf, 1137 ssize_t (*handler)(struct atkbd *, char *)) 1138 { 1139 struct serio *serio = to_serio_port(dev); 1140 int retval; 1141 1142 retval = serio_pin_driver(serio); 1143 if (retval) 1144 return retval; 1145 1146 if (serio->drv != &atkbd_drv) { 1147 retval = -ENODEV; 1148 goto out; 1149 } 1150 1151 retval = handler((struct atkbd *)serio_get_drvdata(serio), buf); 1152 1153 out: 1154 serio_unpin_driver(serio); 1155 return retval; 1156 } 1157 1158 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count, 1159 ssize_t (*handler)(struct atkbd *, const char *, size_t)) 1160 { 1161 struct serio *serio = to_serio_port(dev); 1162 struct atkbd *atkbd; 1163 int retval; 1164 1165 retval = serio_pin_driver(serio); 1166 if (retval) 1167 return retval; 1168 1169 if (serio->drv != &atkbd_drv) { 1170 retval = -ENODEV; 1171 goto out; 1172 } 1173 1174 atkbd = serio_get_drvdata(serio); 1175 atkbd_disable(atkbd); 1176 retval = handler(atkbd, buf, count); 1177 atkbd_enable(atkbd); 1178 1179 out: 1180 serio_unpin_driver(serio); 1181 return retval; 1182 } 1183 1184 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf) 1185 { 1186 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0); 1187 } 1188 1189 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count) 1190 { 1191 struct input_dev *old_dev, *new_dev; 1192 unsigned long value; 1193 char *rest; 1194 int err; 1195 unsigned char old_extra, old_set; 1196 1197 if (!atkbd->write) 1198 return -EIO; 1199 1200 value = simple_strtoul(buf, &rest, 10); 1201 if (*rest || value > 1) 1202 return -EINVAL; 1203 1204 if (atkbd->extra != value) { 1205 /* 1206 * Since device's properties will change we need to 1207 * unregister old device. But allocate and register 1208 * new one first to make sure we have it. 1209 */ 1210 old_dev = atkbd->dev; 1211 old_extra = atkbd->extra; 1212 old_set = atkbd->set; 1213 1214 new_dev = input_allocate_device(); 1215 if (!new_dev) 1216 return -ENOMEM; 1217 1218 atkbd->dev = new_dev; 1219 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value); 1220 atkbd_activate(atkbd); 1221 atkbd_set_keycode_table(atkbd); 1222 atkbd_set_device_attrs(atkbd); 1223 1224 err = input_register_device(atkbd->dev); 1225 if (err) { 1226 input_free_device(new_dev); 1227 1228 atkbd->dev = old_dev; 1229 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra); 1230 atkbd_set_keycode_table(atkbd); 1231 atkbd_set_device_attrs(atkbd); 1232 1233 return err; 1234 } 1235 input_unregister_device(old_dev); 1236 1237 } 1238 return count; 1239 } 1240 1241 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf) 1242 { 1243 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0); 1244 } 1245 1246 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count) 1247 { 1248 struct input_dev *old_dev, *new_dev; 1249 unsigned long value; 1250 char *rest; 1251 int err; 1252 unsigned char old_scroll; 1253 1254 value = simple_strtoul(buf, &rest, 10); 1255 if (*rest || value > 1) 1256 return -EINVAL; 1257 1258 if (atkbd->scroll != value) { 1259 old_dev = atkbd->dev; 1260 old_scroll = atkbd->scroll; 1261 1262 new_dev = input_allocate_device(); 1263 if (!new_dev) 1264 return -ENOMEM; 1265 1266 atkbd->dev = new_dev; 1267 atkbd->scroll = value; 1268 atkbd_set_keycode_table(atkbd); 1269 atkbd_set_device_attrs(atkbd); 1270 1271 err = input_register_device(atkbd->dev); 1272 if (err) { 1273 input_free_device(new_dev); 1274 1275 atkbd->scroll = old_scroll; 1276 atkbd->dev = old_dev; 1277 atkbd_set_keycode_table(atkbd); 1278 atkbd_set_device_attrs(atkbd); 1279 1280 return err; 1281 } 1282 input_unregister_device(old_dev); 1283 } 1284 return count; 1285 } 1286 1287 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf) 1288 { 1289 return sprintf(buf, "%d\n", atkbd->set); 1290 } 1291 1292 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count) 1293 { 1294 struct input_dev *old_dev, *new_dev; 1295 unsigned long value; 1296 char *rest; 1297 int err; 1298 unsigned char old_set, old_extra; 1299 1300 if (!atkbd->write) 1301 return -EIO; 1302 1303 value = simple_strtoul(buf, &rest, 10); 1304 if (*rest || (value != 2 && value != 3)) 1305 return -EINVAL; 1306 1307 if (atkbd->set != value) { 1308 old_dev = atkbd->dev; 1309 old_extra = atkbd->extra; 1310 old_set = atkbd->set; 1311 1312 new_dev = input_allocate_device(); 1313 if (!new_dev) 1314 return -ENOMEM; 1315 1316 atkbd->dev = new_dev; 1317 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra); 1318 atkbd_activate(atkbd); 1319 atkbd_set_keycode_table(atkbd); 1320 atkbd_set_device_attrs(atkbd); 1321 1322 err = input_register_device(atkbd->dev); 1323 if (err) { 1324 input_free_device(new_dev); 1325 1326 atkbd->dev = old_dev; 1327 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra); 1328 atkbd_set_keycode_table(atkbd); 1329 atkbd_set_device_attrs(atkbd); 1330 1331 return err; 1332 } 1333 input_unregister_device(old_dev); 1334 } 1335 return count; 1336 } 1337 1338 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf) 1339 { 1340 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0); 1341 } 1342 1343 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count) 1344 { 1345 struct input_dev *old_dev, *new_dev; 1346 unsigned long value; 1347 char *rest; 1348 int err; 1349 unsigned char old_softrepeat, old_softraw; 1350 1351 if (!atkbd->write) 1352 return -EIO; 1353 1354 value = simple_strtoul(buf, &rest, 10); 1355 if (*rest || value > 1) 1356 return -EINVAL; 1357 1358 if (atkbd->softrepeat != value) { 1359 old_dev = atkbd->dev; 1360 old_softrepeat = atkbd->softrepeat; 1361 old_softraw = atkbd->softraw; 1362 1363 new_dev = input_allocate_device(); 1364 if (!new_dev) 1365 return -ENOMEM; 1366 1367 atkbd->dev = new_dev; 1368 atkbd->softrepeat = value; 1369 if (atkbd->softrepeat) 1370 atkbd->softraw = 1; 1371 atkbd_set_device_attrs(atkbd); 1372 1373 err = input_register_device(atkbd->dev); 1374 if (err) { 1375 input_free_device(new_dev); 1376 1377 atkbd->dev = old_dev; 1378 atkbd->softrepeat = old_softrepeat; 1379 atkbd->softraw = old_softraw; 1380 atkbd_set_device_attrs(atkbd); 1381 1382 return err; 1383 } 1384 input_unregister_device(old_dev); 1385 } 1386 return count; 1387 } 1388 1389 1390 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf) 1391 { 1392 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0); 1393 } 1394 1395 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count) 1396 { 1397 struct input_dev *old_dev, *new_dev; 1398 unsigned long value; 1399 char *rest; 1400 int err; 1401 unsigned char old_softraw; 1402 1403 value = simple_strtoul(buf, &rest, 10); 1404 if (*rest || value > 1) 1405 return -EINVAL; 1406 1407 if (atkbd->softraw != value) { 1408 old_dev = atkbd->dev; 1409 old_softraw = atkbd->softraw; 1410 1411 new_dev = input_allocate_device(); 1412 if (!new_dev) 1413 return -ENOMEM; 1414 1415 atkbd->dev = new_dev; 1416 atkbd->softraw = value; 1417 atkbd_set_device_attrs(atkbd); 1418 1419 err = input_register_device(atkbd->dev); 1420 if (err) { 1421 input_free_device(new_dev); 1422 1423 atkbd->dev = old_dev; 1424 atkbd->softraw = old_softraw; 1425 atkbd_set_device_attrs(atkbd); 1426 1427 return err; 1428 } 1429 input_unregister_device(old_dev); 1430 } 1431 return count; 1432 } 1433 1434 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf) 1435 { 1436 return sprintf(buf, "%lu\n", atkbd->err_count); 1437 } 1438 1439 static int __init atkbd_setup_fixup(const struct dmi_system_id *id) 1440 { 1441 atkbd_platform_fixup = id->driver_data; 1442 return 0; 1443 } 1444 1445 static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = { 1446 { 1447 .ident = "Dell Latitude series", 1448 .matches = { 1449 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 1450 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude"), 1451 }, 1452 .callback = atkbd_setup_fixup, 1453 .driver_data = atkbd_latitude_keymap_fixup, 1454 }, 1455 { } 1456 }; 1457 1458 static int __init atkbd_init(void) 1459 { 1460 dmi_check_system(atkbd_dmi_quirk_table); 1461 1462 return serio_register_driver(&atkbd_drv); 1463 } 1464 1465 static void __exit atkbd_exit(void) 1466 { 1467 serio_unregister_driver(&atkbd_drv); 1468 } 1469 1470 module_init(atkbd_init); 1471 module_exit(atkbd_exit); 1472