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 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 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 * atkbd_set_keycode_table() initializes keyboard's keycode table 872 * according to the selected scancode set 873 */ 874 875 static void atkbd_set_keycode_table(struct atkbd *atkbd) 876 { 877 unsigned int scancode; 878 int i, j; 879 880 memset(atkbd->keycode, 0, sizeof(atkbd->keycode)); 881 bitmap_zero(atkbd->force_release_mask, 512); 882 883 if (atkbd->translated) { 884 for (i = 0; i < 128; i++) { 885 scancode = atkbd_unxlate_table[i]; 886 atkbd->keycode[i] = atkbd_set2_keycode[scancode]; 887 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80]; 888 if (atkbd->scroll) 889 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++) 890 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2) 891 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode; 892 } 893 } else if (atkbd->set == 3) { 894 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode)); 895 } else { 896 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode)); 897 898 if (atkbd->scroll) 899 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) { 900 scancode = atkbd_scroll_keys[i].set2; 901 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode; 902 } 903 } 904 905 /* 906 * HANGEUL and HANJA keys do not send release events so we need to 907 * generate such events ourselves 908 */ 909 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL); 910 atkbd->keycode[scancode] = KEY_HANGEUL; 911 __set_bit(scancode, atkbd->force_release_mask); 912 913 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA); 914 atkbd->keycode[scancode] = KEY_HANJA; 915 __set_bit(scancode, atkbd->force_release_mask); 916 917 /* 918 * Perform additional fixups 919 */ 920 if (atkbd_platform_fixup) 921 atkbd_platform_fixup(atkbd); 922 } 923 924 /* 925 * atkbd_set_device_attrs() sets up keyboard's input device structure 926 */ 927 928 static void atkbd_set_device_attrs(struct atkbd *atkbd) 929 { 930 struct input_dev *input_dev = atkbd->dev; 931 int i; 932 933 if (atkbd->extra) 934 snprintf(atkbd->name, sizeof(atkbd->name), 935 "AT Set 2 Extra keyboard"); 936 else 937 snprintf(atkbd->name, sizeof(atkbd->name), 938 "AT %s Set %d keyboard", 939 atkbd->translated ? "Translated" : "Raw", atkbd->set); 940 941 snprintf(atkbd->phys, sizeof(atkbd->phys), 942 "%s/input0", atkbd->ps2dev.serio->phys); 943 944 input_dev->name = atkbd->name; 945 input_dev->phys = atkbd->phys; 946 input_dev->id.bustype = BUS_I8042; 947 input_dev->id.vendor = 0x0001; 948 input_dev->id.product = atkbd->translated ? 1 : atkbd->set; 949 input_dev->id.version = atkbd->id; 950 input_dev->event = atkbd_event; 951 input_dev->dev.parent = &atkbd->ps2dev.serio->dev; 952 953 input_set_drvdata(input_dev, atkbd); 954 955 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) | 956 BIT_MASK(EV_MSC); 957 958 if (atkbd->write) { 959 input_dev->evbit[0] |= BIT_MASK(EV_LED); 960 input_dev->ledbit[0] = BIT_MASK(LED_NUML) | 961 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL); 962 } 963 964 if (atkbd->extra) 965 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) | 966 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) | 967 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC); 968 969 if (!atkbd->softrepeat) { 970 input_dev->rep[REP_DELAY] = 250; 971 input_dev->rep[REP_PERIOD] = 33; 972 } 973 974 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) : 975 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN); 976 977 if (atkbd->scroll) { 978 input_dev->evbit[0] |= BIT_MASK(EV_REL); 979 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) | 980 BIT_MASK(REL_HWHEEL); 981 __set_bit(BTN_MIDDLE, input_dev->keybit); 982 } 983 984 input_dev->keycode = atkbd->keycode; 985 input_dev->keycodesize = sizeof(unsigned short); 986 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode); 987 988 for (i = 0; i < 512; i++) 989 if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL) 990 __set_bit(atkbd->keycode[i], input_dev->keybit); 991 } 992 993 /* 994 * atkbd_connect() is called when the serio module finds an interface 995 * that isn't handled yet by an appropriate device driver. We check if 996 * there is an AT keyboard out there and if yes, we register ourselves 997 * to the input module. 998 */ 999 1000 static int atkbd_connect(struct serio *serio, struct serio_driver *drv) 1001 { 1002 struct atkbd *atkbd; 1003 struct input_dev *dev; 1004 int err = -ENOMEM; 1005 1006 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL); 1007 dev = input_allocate_device(); 1008 if (!atkbd || !dev) 1009 goto fail1; 1010 1011 atkbd->dev = dev; 1012 ps2_init(&atkbd->ps2dev, serio); 1013 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work); 1014 mutex_init(&atkbd->event_mutex); 1015 1016 switch (serio->id.type) { 1017 1018 case SERIO_8042_XL: 1019 atkbd->translated = 1; 1020 case SERIO_8042: 1021 if (serio->write) 1022 atkbd->write = 1; 1023 break; 1024 } 1025 1026 atkbd->softraw = atkbd_softraw; 1027 atkbd->softrepeat = atkbd_softrepeat; 1028 atkbd->scroll = atkbd_scroll; 1029 1030 if (atkbd->softrepeat) 1031 atkbd->softraw = 1; 1032 1033 serio_set_drvdata(serio, atkbd); 1034 1035 err = serio_open(serio, drv); 1036 if (err) 1037 goto fail2; 1038 1039 if (atkbd->write) { 1040 1041 if (atkbd_probe(atkbd)) { 1042 err = -ENODEV; 1043 goto fail3; 1044 } 1045 1046 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra); 1047 atkbd_activate(atkbd); 1048 1049 } else { 1050 atkbd->set = 2; 1051 atkbd->id = 0xab00; 1052 } 1053 1054 atkbd_set_keycode_table(atkbd); 1055 atkbd_set_device_attrs(atkbd); 1056 1057 err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group); 1058 if (err) 1059 goto fail3; 1060 1061 atkbd_enable(atkbd); 1062 1063 err = input_register_device(atkbd->dev); 1064 if (err) 1065 goto fail4; 1066 1067 return 0; 1068 1069 fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group); 1070 fail3: serio_close(serio); 1071 fail2: serio_set_drvdata(serio, NULL); 1072 fail1: input_free_device(dev); 1073 kfree(atkbd); 1074 return err; 1075 } 1076 1077 /* 1078 * atkbd_reconnect() tries to restore keyboard into a sane state and is 1079 * most likely called on resume. 1080 */ 1081 1082 static int atkbd_reconnect(struct serio *serio) 1083 { 1084 struct atkbd *atkbd = serio_get_drvdata(serio); 1085 struct serio_driver *drv = serio->drv; 1086 1087 if (!atkbd || !drv) { 1088 printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n"); 1089 return -1; 1090 } 1091 1092 atkbd_disable(atkbd); 1093 1094 if (atkbd->write) { 1095 if (atkbd_probe(atkbd)) 1096 return -1; 1097 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra)) 1098 return -1; 1099 1100 atkbd_activate(atkbd); 1101 1102 /* 1103 * Restore repeat rate and LEDs (that were reset by atkbd_activate) 1104 * to pre-resume state 1105 */ 1106 if (!atkbd->softrepeat) 1107 atkbd_set_repeat_rate(atkbd); 1108 atkbd_set_leds(atkbd); 1109 } 1110 1111 atkbd_enable(atkbd); 1112 1113 return 0; 1114 } 1115 1116 static struct serio_device_id atkbd_serio_ids[] = { 1117 { 1118 .type = SERIO_8042, 1119 .proto = SERIO_ANY, 1120 .id = SERIO_ANY, 1121 .extra = SERIO_ANY, 1122 }, 1123 { 1124 .type = SERIO_8042_XL, 1125 .proto = SERIO_ANY, 1126 .id = SERIO_ANY, 1127 .extra = SERIO_ANY, 1128 }, 1129 { 1130 .type = SERIO_RS232, 1131 .proto = SERIO_PS2SER, 1132 .id = SERIO_ANY, 1133 .extra = SERIO_ANY, 1134 }, 1135 { 0 } 1136 }; 1137 1138 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids); 1139 1140 static struct serio_driver atkbd_drv = { 1141 .driver = { 1142 .name = "atkbd", 1143 }, 1144 .description = DRIVER_DESC, 1145 .id_table = atkbd_serio_ids, 1146 .interrupt = atkbd_interrupt, 1147 .connect = atkbd_connect, 1148 .reconnect = atkbd_reconnect, 1149 .disconnect = atkbd_disconnect, 1150 .cleanup = atkbd_cleanup, 1151 }; 1152 1153 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf, 1154 ssize_t (*handler)(struct atkbd *, char *)) 1155 { 1156 struct serio *serio = to_serio_port(dev); 1157 int retval; 1158 1159 retval = serio_pin_driver(serio); 1160 if (retval) 1161 return retval; 1162 1163 if (serio->drv != &atkbd_drv) { 1164 retval = -ENODEV; 1165 goto out; 1166 } 1167 1168 retval = handler((struct atkbd *)serio_get_drvdata(serio), buf); 1169 1170 out: 1171 serio_unpin_driver(serio); 1172 return retval; 1173 } 1174 1175 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count, 1176 ssize_t (*handler)(struct atkbd *, const char *, size_t)) 1177 { 1178 struct serio *serio = to_serio_port(dev); 1179 struct atkbd *atkbd; 1180 int retval; 1181 1182 retval = serio_pin_driver(serio); 1183 if (retval) 1184 return retval; 1185 1186 if (serio->drv != &atkbd_drv) { 1187 retval = -ENODEV; 1188 goto out; 1189 } 1190 1191 atkbd = serio_get_drvdata(serio); 1192 atkbd_disable(atkbd); 1193 retval = handler(atkbd, buf, count); 1194 atkbd_enable(atkbd); 1195 1196 out: 1197 serio_unpin_driver(serio); 1198 return retval; 1199 } 1200 1201 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf) 1202 { 1203 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0); 1204 } 1205 1206 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count) 1207 { 1208 struct input_dev *old_dev, *new_dev; 1209 unsigned long value; 1210 int err; 1211 unsigned char old_extra, old_set; 1212 1213 if (!atkbd->write) 1214 return -EIO; 1215 1216 if (strict_strtoul(buf, 10, &value) || value > 1) 1217 return -EINVAL; 1218 1219 if (atkbd->extra != value) { 1220 /* 1221 * Since device's properties will change we need to 1222 * unregister old device. But allocate and register 1223 * new one first to make sure we have it. 1224 */ 1225 old_dev = atkbd->dev; 1226 old_extra = atkbd->extra; 1227 old_set = atkbd->set; 1228 1229 new_dev = input_allocate_device(); 1230 if (!new_dev) 1231 return -ENOMEM; 1232 1233 atkbd->dev = new_dev; 1234 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value); 1235 atkbd_activate(atkbd); 1236 atkbd_set_keycode_table(atkbd); 1237 atkbd_set_device_attrs(atkbd); 1238 1239 err = input_register_device(atkbd->dev); 1240 if (err) { 1241 input_free_device(new_dev); 1242 1243 atkbd->dev = old_dev; 1244 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra); 1245 atkbd_set_keycode_table(atkbd); 1246 atkbd_set_device_attrs(atkbd); 1247 1248 return err; 1249 } 1250 input_unregister_device(old_dev); 1251 1252 } 1253 return count; 1254 } 1255 1256 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf) 1257 { 1258 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0); 1259 } 1260 1261 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count) 1262 { 1263 struct input_dev *old_dev, *new_dev; 1264 unsigned long value; 1265 int err; 1266 unsigned char old_scroll; 1267 1268 if (strict_strtoul(buf, 10, &value) || value > 1) 1269 return -EINVAL; 1270 1271 if (atkbd->scroll != value) { 1272 old_dev = atkbd->dev; 1273 old_scroll = atkbd->scroll; 1274 1275 new_dev = input_allocate_device(); 1276 if (!new_dev) 1277 return -ENOMEM; 1278 1279 atkbd->dev = new_dev; 1280 atkbd->scroll = value; 1281 atkbd_set_keycode_table(atkbd); 1282 atkbd_set_device_attrs(atkbd); 1283 1284 err = input_register_device(atkbd->dev); 1285 if (err) { 1286 input_free_device(new_dev); 1287 1288 atkbd->scroll = old_scroll; 1289 atkbd->dev = old_dev; 1290 atkbd_set_keycode_table(atkbd); 1291 atkbd_set_device_attrs(atkbd); 1292 1293 return err; 1294 } 1295 input_unregister_device(old_dev); 1296 } 1297 return count; 1298 } 1299 1300 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf) 1301 { 1302 return sprintf(buf, "%d\n", atkbd->set); 1303 } 1304 1305 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count) 1306 { 1307 struct input_dev *old_dev, *new_dev; 1308 unsigned long value; 1309 int err; 1310 unsigned char old_set, old_extra; 1311 1312 if (!atkbd->write) 1313 return -EIO; 1314 1315 if (strict_strtoul(buf, 10, &value) || (value != 2 && value != 3)) 1316 return -EINVAL; 1317 1318 if (atkbd->set != value) { 1319 old_dev = atkbd->dev; 1320 old_extra = atkbd->extra; 1321 old_set = atkbd->set; 1322 1323 new_dev = input_allocate_device(); 1324 if (!new_dev) 1325 return -ENOMEM; 1326 1327 atkbd->dev = new_dev; 1328 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra); 1329 atkbd_activate(atkbd); 1330 atkbd_set_keycode_table(atkbd); 1331 atkbd_set_device_attrs(atkbd); 1332 1333 err = input_register_device(atkbd->dev); 1334 if (err) { 1335 input_free_device(new_dev); 1336 1337 atkbd->dev = old_dev; 1338 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra); 1339 atkbd_set_keycode_table(atkbd); 1340 atkbd_set_device_attrs(atkbd); 1341 1342 return err; 1343 } 1344 input_unregister_device(old_dev); 1345 } 1346 return count; 1347 } 1348 1349 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf) 1350 { 1351 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0); 1352 } 1353 1354 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count) 1355 { 1356 struct input_dev *old_dev, *new_dev; 1357 unsigned long value; 1358 int err; 1359 unsigned char old_softrepeat, old_softraw; 1360 1361 if (!atkbd->write) 1362 return -EIO; 1363 1364 if (strict_strtoul(buf, 10, &value) || value > 1) 1365 return -EINVAL; 1366 1367 if (atkbd->softrepeat != value) { 1368 old_dev = atkbd->dev; 1369 old_softrepeat = atkbd->softrepeat; 1370 old_softraw = atkbd->softraw; 1371 1372 new_dev = input_allocate_device(); 1373 if (!new_dev) 1374 return -ENOMEM; 1375 1376 atkbd->dev = new_dev; 1377 atkbd->softrepeat = value; 1378 if (atkbd->softrepeat) 1379 atkbd->softraw = 1; 1380 atkbd_set_device_attrs(atkbd); 1381 1382 err = input_register_device(atkbd->dev); 1383 if (err) { 1384 input_free_device(new_dev); 1385 1386 atkbd->dev = old_dev; 1387 atkbd->softrepeat = old_softrepeat; 1388 atkbd->softraw = old_softraw; 1389 atkbd_set_device_attrs(atkbd); 1390 1391 return err; 1392 } 1393 input_unregister_device(old_dev); 1394 } 1395 return count; 1396 } 1397 1398 1399 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf) 1400 { 1401 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0); 1402 } 1403 1404 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count) 1405 { 1406 struct input_dev *old_dev, *new_dev; 1407 unsigned long value; 1408 int err; 1409 unsigned char old_softraw; 1410 1411 if (strict_strtoul(buf, 10, &value) || value > 1) 1412 return -EINVAL; 1413 1414 if (atkbd->softraw != value) { 1415 old_dev = atkbd->dev; 1416 old_softraw = atkbd->softraw; 1417 1418 new_dev = input_allocate_device(); 1419 if (!new_dev) 1420 return -ENOMEM; 1421 1422 atkbd->dev = new_dev; 1423 atkbd->softraw = value; 1424 atkbd_set_device_attrs(atkbd); 1425 1426 err = input_register_device(atkbd->dev); 1427 if (err) { 1428 input_free_device(new_dev); 1429 1430 atkbd->dev = old_dev; 1431 atkbd->softraw = old_softraw; 1432 atkbd_set_device_attrs(atkbd); 1433 1434 return err; 1435 } 1436 input_unregister_device(old_dev); 1437 } 1438 return count; 1439 } 1440 1441 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf) 1442 { 1443 return sprintf(buf, "%lu\n", atkbd->err_count); 1444 } 1445 1446 static int __init atkbd_setup_fixup(const struct dmi_system_id *id) 1447 { 1448 atkbd_platform_fixup = id->driver_data; 1449 return 0; 1450 } 1451 1452 static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = { 1453 { 1454 .ident = "Dell Laptop", 1455 .matches = { 1456 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."), 1457 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */ 1458 }, 1459 .callback = atkbd_setup_fixup, 1460 .driver_data = atkbd_dell_laptop_keymap_fixup, 1461 }, 1462 { 1463 .ident = "HP 2133", 1464 .matches = { 1465 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"), 1466 DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"), 1467 }, 1468 .callback = atkbd_setup_fixup, 1469 .driver_data = atkbd_hp_keymap_fixup, 1470 }, 1471 { } 1472 }; 1473 1474 static int __init atkbd_init(void) 1475 { 1476 dmi_check_system(atkbd_dmi_quirk_table); 1477 1478 return serio_register_driver(&atkbd_drv); 1479 } 1480 1481 static void __exit atkbd_exit(void) 1482 { 1483 serio_unregister_driver(&atkbd_drv); 1484 } 1485 1486 module_init(atkbd_init); 1487 module_exit(atkbd_exit); 1488