1 #ifndef _I8042_X86IA64IO_H
2 #define _I8042_X86IA64IO_H
3
4 /*
5 * This program is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 as published by
7 * the Free Software Foundation.
8 */
9
10 #ifdef CONFIG_X86
11 #include <asm/x86_init.h>
12 #endif
13
14 /*
15 * Names.
16 */
17
18 #define I8042_KBD_PHYS_DESC "isa0060/serio0"
19 #define I8042_AUX_PHYS_DESC "isa0060/serio1"
20 #define I8042_MUX_PHYS_DESC "isa0060/serio%d"
21
22 /*
23 * IRQs.
24 */
25
26 #if defined(__ia64__)
27 # define I8042_MAP_IRQ(x) isa_irq_to_vector((x))
28 #else
29 # define I8042_MAP_IRQ(x) (x)
30 #endif
31
32 #define I8042_KBD_IRQ i8042_kbd_irq
33 #define I8042_AUX_IRQ i8042_aux_irq
34
35 static int i8042_kbd_irq;
36 static int i8042_aux_irq;
37
38 /*
39 * Register numbers.
40 */
41
42 #define I8042_COMMAND_REG i8042_command_reg
43 #define I8042_STATUS_REG i8042_command_reg
44 #define I8042_DATA_REG i8042_data_reg
45
46 static int i8042_command_reg = 0x64;
47 static int i8042_data_reg = 0x60;
48
49
i8042_read_data(void)50 static inline int i8042_read_data(void)
51 {
52 return inb(I8042_DATA_REG);
53 }
54
i8042_read_status(void)55 static inline int i8042_read_status(void)
56 {
57 return inb(I8042_STATUS_REG);
58 }
59
i8042_write_data(int val)60 static inline void i8042_write_data(int val)
61 {
62 outb(val, I8042_DATA_REG);
63 }
64
i8042_write_command(int val)65 static inline void i8042_write_command(int val)
66 {
67 outb(val, I8042_COMMAND_REG);
68 }
69
70 #ifdef CONFIG_X86
71
72 #include <linux/dmi.h>
73
74 static const struct dmi_system_id __initconst i8042_dmi_noloop_table[] = {
75 {
76 /*
77 * Arima-Rioworks HDAMB -
78 * AUX LOOP command does not raise AUX IRQ
79 */
80 .matches = {
81 DMI_MATCH(DMI_BOARD_VENDOR, "RIOWORKS"),
82 DMI_MATCH(DMI_BOARD_NAME, "HDAMB"),
83 DMI_MATCH(DMI_BOARD_VERSION, "Rev E"),
84 },
85 },
86 {
87 /* ASUS G1S */
88 .matches = {
89 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer Inc."),
90 DMI_MATCH(DMI_BOARD_NAME, "G1S"),
91 DMI_MATCH(DMI_BOARD_VERSION, "1.0"),
92 },
93 },
94 {
95 /* ASUS P65UP5 - AUX LOOP command does not raise AUX IRQ */
96 .matches = {
97 DMI_MATCH(DMI_BOARD_VENDOR, "ASUSTeK Computer INC."),
98 DMI_MATCH(DMI_BOARD_NAME, "P/I-P65UP5"),
99 DMI_MATCH(DMI_BOARD_VERSION, "REV 2.X"),
100 },
101 },
102 {
103 .matches = {
104 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
105 DMI_MATCH(DMI_PRODUCT_NAME, "X750LN"),
106 },
107 },
108 {
109 .matches = {
110 DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
111 DMI_MATCH(DMI_PRODUCT_NAME , "ProLiant"),
112 DMI_MATCH(DMI_PRODUCT_VERSION, "8500"),
113 },
114 },
115 {
116 .matches = {
117 DMI_MATCH(DMI_SYS_VENDOR, "Compaq"),
118 DMI_MATCH(DMI_PRODUCT_NAME , "ProLiant"),
119 DMI_MATCH(DMI_PRODUCT_VERSION, "DL760"),
120 },
121 },
122 {
123 /* Dell Embedded Box PC 3000 */
124 .matches = {
125 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
126 DMI_MATCH(DMI_PRODUCT_NAME, "Embedded Box PC 3000"),
127 },
128 },
129 {
130 /* OQO Model 01 */
131 .matches = {
132 DMI_MATCH(DMI_SYS_VENDOR, "OQO"),
133 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPTO"),
134 DMI_MATCH(DMI_PRODUCT_VERSION, "00"),
135 },
136 },
137 {
138 /* ULI EV4873 - AUX LOOP does not work properly */
139 .matches = {
140 DMI_MATCH(DMI_SYS_VENDOR, "ULI"),
141 DMI_MATCH(DMI_PRODUCT_NAME, "EV4873"),
142 DMI_MATCH(DMI_PRODUCT_VERSION, "5a"),
143 },
144 },
145 {
146 /* Microsoft Virtual Machine */
147 .matches = {
148 DMI_MATCH(DMI_SYS_VENDOR, "Microsoft Corporation"),
149 DMI_MATCH(DMI_PRODUCT_NAME, "Virtual Machine"),
150 DMI_MATCH(DMI_PRODUCT_VERSION, "VS2005R2"),
151 },
152 },
153 {
154 /* Medion MAM 2070 */
155 .matches = {
156 DMI_MATCH(DMI_SYS_VENDOR, "Notebook"),
157 DMI_MATCH(DMI_PRODUCT_NAME, "MAM 2070"),
158 DMI_MATCH(DMI_PRODUCT_VERSION, "5a"),
159 },
160 },
161 {
162 /* Medion Akoya E7225 */
163 .matches = {
164 DMI_MATCH(DMI_SYS_VENDOR, "Medion"),
165 DMI_MATCH(DMI_PRODUCT_NAME, "Akoya E7225"),
166 DMI_MATCH(DMI_PRODUCT_VERSION, "1.0"),
167 },
168 },
169 {
170 /* Blue FB5601 */
171 .matches = {
172 DMI_MATCH(DMI_SYS_VENDOR, "blue"),
173 DMI_MATCH(DMI_PRODUCT_NAME, "FB5601"),
174 DMI_MATCH(DMI_PRODUCT_VERSION, "M606"),
175 },
176 },
177 {
178 /* Gigabyte M912 */
179 .matches = {
180 DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
181 DMI_MATCH(DMI_PRODUCT_NAME, "M912"),
182 DMI_MATCH(DMI_PRODUCT_VERSION, "01"),
183 },
184 },
185 {
186 /* Gigabyte M1022M netbook */
187 .matches = {
188 DMI_MATCH(DMI_BOARD_VENDOR, "Gigabyte Technology Co.,Ltd."),
189 DMI_MATCH(DMI_BOARD_NAME, "M1022E"),
190 DMI_MATCH(DMI_BOARD_VERSION, "1.02"),
191 },
192 },
193 {
194 /* Gigabyte Spring Peak - defines wrong chassis type */
195 .matches = {
196 DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
197 DMI_MATCH(DMI_PRODUCT_NAME, "Spring Peak"),
198 },
199 },
200 {
201 /* Gigabyte T1005 - defines wrong chassis type ("Other") */
202 .matches = {
203 DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
204 DMI_MATCH(DMI_PRODUCT_NAME, "T1005"),
205 },
206 },
207 {
208 /* Gigabyte T1005M/P - defines wrong chassis type ("Other") */
209 .matches = {
210 DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
211 DMI_MATCH(DMI_PRODUCT_NAME, "T1005M/P"),
212 },
213 },
214 {
215 .matches = {
216 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
217 DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv9700"),
218 DMI_MATCH(DMI_PRODUCT_VERSION, "Rev 1"),
219 },
220 },
221 {
222 .matches = {
223 DMI_MATCH(DMI_SYS_VENDOR, "PEGATRON CORPORATION"),
224 DMI_MATCH(DMI_PRODUCT_NAME, "C15B"),
225 },
226 },
227 { }
228 };
229
230 /*
231 * Some Fujitsu notebooks are having trouble with touchpads if
232 * active multiplexing mode is activated. Luckily they don't have
233 * external PS/2 ports so we can safely disable it.
234 * ... apparently some Toshibas don't like MUX mode either and
235 * die horrible death on reboot.
236 */
237 static const struct dmi_system_id __initconst i8042_dmi_nomux_table[] = {
238 {
239 /* Fujitsu Lifebook P7010/P7010D */
240 .matches = {
241 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
242 DMI_MATCH(DMI_PRODUCT_NAME, "P7010"),
243 },
244 },
245 {
246 /* Fujitsu Lifebook P7010 */
247 .matches = {
248 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
249 DMI_MATCH(DMI_PRODUCT_NAME, "0000000000"),
250 },
251 },
252 {
253 /* Fujitsu Lifebook P5020D */
254 .matches = {
255 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
256 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook P Series"),
257 },
258 },
259 {
260 /* Fujitsu Lifebook S2000 */
261 .matches = {
262 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
263 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook S Series"),
264 },
265 },
266 {
267 /* Fujitsu Lifebook S6230 */
268 .matches = {
269 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
270 DMI_MATCH(DMI_PRODUCT_NAME, "LifeBook S6230"),
271 },
272 },
273 {
274 /* Fujitsu Lifebook U745 */
275 .matches = {
276 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
277 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK U745"),
278 },
279 },
280 {
281 /* Fujitsu T70H */
282 .matches = {
283 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
284 DMI_MATCH(DMI_PRODUCT_NAME, "FMVLT70H"),
285 },
286 },
287 {
288 /* Fujitsu-Siemens Lifebook T3010 */
289 .matches = {
290 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
291 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK T3010"),
292 },
293 },
294 {
295 /* Fujitsu-Siemens Lifebook E4010 */
296 .matches = {
297 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
298 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK E4010"),
299 },
300 },
301 {
302 /* Fujitsu-Siemens Amilo Pro 2010 */
303 .matches = {
304 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
305 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pro V2010"),
306 },
307 },
308 {
309 /* Fujitsu-Siemens Amilo Pro 2030 */
310 .matches = {
311 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
312 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO PRO V2030"),
313 },
314 },
315 {
316 /*
317 * No data is coming from the touchscreen unless KBC
318 * is in legacy mode.
319 */
320 /* Panasonic CF-29 */
321 .matches = {
322 DMI_MATCH(DMI_SYS_VENDOR, "Matsushita"),
323 DMI_MATCH(DMI_PRODUCT_NAME, "CF-29"),
324 },
325 },
326 {
327 /*
328 * HP Pavilion DV4017EA -
329 * errors on MUX ports are reported without raising AUXDATA
330 * causing "spurious NAK" messages.
331 */
332 .matches = {
333 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
334 DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion dv4000 (EA032EA#ABF)"),
335 },
336 },
337 {
338 /*
339 * HP Pavilion ZT1000 -
340 * like DV4017EA does not raise AUXERR for errors on MUX ports.
341 */
342 .matches = {
343 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
344 DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion Notebook PC"),
345 DMI_MATCH(DMI_PRODUCT_VERSION, "HP Pavilion Notebook ZT1000"),
346 },
347 },
348 {
349 /*
350 * HP Pavilion DV4270ca -
351 * like DV4017EA does not raise AUXERR for errors on MUX ports.
352 */
353 .matches = {
354 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
355 DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion dv4000 (EH476UA#ABL)"),
356 },
357 },
358 {
359 .matches = {
360 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
361 DMI_MATCH(DMI_PRODUCT_NAME, "Satellite P10"),
362 },
363 },
364 {
365 .matches = {
366 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
367 DMI_MATCH(DMI_PRODUCT_NAME, "EQUIUM A110"),
368 },
369 },
370 {
371 .matches = {
372 DMI_MATCH(DMI_SYS_VENDOR, "TOSHIBA"),
373 DMI_MATCH(DMI_PRODUCT_NAME, "SATELLITE C850D"),
374 },
375 },
376 {
377 .matches = {
378 DMI_MATCH(DMI_SYS_VENDOR, "ALIENWARE"),
379 DMI_MATCH(DMI_PRODUCT_NAME, "Sentia"),
380 },
381 },
382 {
383 /* Sharp Actius MM20 */
384 .matches = {
385 DMI_MATCH(DMI_SYS_VENDOR, "SHARP"),
386 DMI_MATCH(DMI_PRODUCT_NAME, "PC-MM20 Series"),
387 },
388 },
389 {
390 /* Sony Vaio FS-115b */
391 .matches = {
392 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
393 DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FS115B"),
394 },
395 },
396 {
397 /*
398 * Sony Vaio FZ-240E -
399 * reset and GET ID commands issued via KBD port are
400 * sometimes being delivered to AUX3.
401 */
402 .matches = {
403 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
404 DMI_MATCH(DMI_PRODUCT_NAME, "VGN-FZ240E"),
405 },
406 },
407 {
408 /*
409 * Most (all?) VAIOs do not have external PS/2 ports nor
410 * they implement active multiplexing properly, and
411 * MUX discovery usually messes up keyboard/touchpad.
412 */
413 .matches = {
414 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
415 DMI_MATCH(DMI_BOARD_NAME, "VAIO"),
416 },
417 },
418 {
419 /* Amoi M636/A737 */
420 .matches = {
421 DMI_MATCH(DMI_SYS_VENDOR, "Amoi Electronics CO.,LTD."),
422 DMI_MATCH(DMI_PRODUCT_NAME, "M636/A737 platform"),
423 },
424 },
425 {
426 /* Lenovo 3000 n100 */
427 .matches = {
428 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
429 DMI_MATCH(DMI_PRODUCT_NAME, "076804U"),
430 },
431 },
432 {
433 /* Lenovo XiaoXin Air 12 */
434 .matches = {
435 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
436 DMI_MATCH(DMI_PRODUCT_NAME, "80UN"),
437 },
438 },
439 {
440 .matches = {
441 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
442 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
443 },
444 },
445 {
446 /* Acer Aspire 5710 */
447 .matches = {
448 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
449 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5710"),
450 },
451 },
452 {
453 /* Acer Aspire 7738 */
454 .matches = {
455 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
456 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7738"),
457 },
458 },
459 {
460 /* Gericom Bellagio */
461 .matches = {
462 DMI_MATCH(DMI_SYS_VENDOR, "Gericom"),
463 DMI_MATCH(DMI_PRODUCT_NAME, "N34AS6"),
464 },
465 },
466 {
467 /* IBM 2656 */
468 .matches = {
469 DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
470 DMI_MATCH(DMI_PRODUCT_NAME, "2656"),
471 },
472 },
473 {
474 /* Dell XPS M1530 */
475 .matches = {
476 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
477 DMI_MATCH(DMI_PRODUCT_NAME, "XPS M1530"),
478 },
479 },
480 {
481 /* Compal HEL80I */
482 .matches = {
483 DMI_MATCH(DMI_SYS_VENDOR, "COMPAL"),
484 DMI_MATCH(DMI_PRODUCT_NAME, "HEL80I"),
485 },
486 },
487 {
488 /* Dell Vostro 1510 */
489 .matches = {
490 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
491 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro1510"),
492 },
493 },
494 {
495 /* Acer Aspire 5536 */
496 .matches = {
497 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
498 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5536"),
499 DMI_MATCH(DMI_PRODUCT_VERSION, "0100"),
500 },
501 },
502 {
503 /* Dell Vostro V13 */
504 .matches = {
505 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
506 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V13"),
507 },
508 },
509 {
510 /* Newer HP Pavilion dv4 models */
511 .matches = {
512 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
513 DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv4 Notebook PC"),
514 },
515 },
516 {
517 /* Asus X450LCP */
518 .matches = {
519 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
520 DMI_MATCH(DMI_PRODUCT_NAME, "X450LCP"),
521 },
522 },
523 {
524 /* Avatar AVIU-145A6 */
525 .matches = {
526 DMI_MATCH(DMI_SYS_VENDOR, "Intel"),
527 DMI_MATCH(DMI_PRODUCT_NAME, "IC4I"),
528 },
529 },
530 {
531 /* TUXEDO BU1406 */
532 .matches = {
533 DMI_MATCH(DMI_SYS_VENDOR, "Notebook"),
534 DMI_MATCH(DMI_PRODUCT_NAME, "N24_25BU"),
535 },
536 },
537 {
538 /* Lenovo LaVie Z */
539 .matches = {
540 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
541 DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo LaVie Z"),
542 },
543 },
544 {
545 /*
546 * Acer Aspire 5738z
547 * Touchpad stops working in mux mode when dis- + re-enabled
548 * with the touchpad enable/disable toggle hotkey
549 */
550 .matches = {
551 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
552 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5738"),
553 },
554 },
555 {
556 /* Entroware Proteus */
557 .matches = {
558 DMI_MATCH(DMI_SYS_VENDOR, "Entroware"),
559 DMI_MATCH(DMI_PRODUCT_NAME, "Proteus"),
560 DMI_MATCH(DMI_PRODUCT_VERSION, "EL07R4"),
561 },
562 },
563 { }
564 };
565
566 static const struct dmi_system_id i8042_dmi_forcemux_table[] __initconst = {
567 {
568 /*
569 * Sony Vaio VGN-CS series require MUX or the touch sensor
570 * buttons will disturb touchpad operation
571 */
572 .matches = {
573 DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
574 DMI_MATCH(DMI_PRODUCT_NAME, "VGN-CS"),
575 },
576 },
577 { }
578 };
579
580 /*
581 * On some Asus laptops, just running self tests cause problems.
582 */
583 static const struct dmi_system_id i8042_dmi_noselftest_table[] = {
584 {
585 .matches = {
586 DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
587 DMI_MATCH(DMI_CHASSIS_TYPE, "10"), /* Notebook */
588 },
589 },
590 { }
591 };
592 static const struct dmi_system_id __initconst i8042_dmi_reset_table[] = {
593 {
594 /* MSI Wind U-100 */
595 .matches = {
596 DMI_MATCH(DMI_BOARD_NAME, "U-100"),
597 DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"),
598 },
599 },
600 {
601 /* LG Electronics X110 */
602 .matches = {
603 DMI_MATCH(DMI_BOARD_NAME, "X110"),
604 DMI_MATCH(DMI_BOARD_VENDOR, "LG Electronics Inc."),
605 },
606 },
607 {
608 /* Acer Aspire One 150 */
609 .matches = {
610 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
611 DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
612 },
613 },
614 {
615 /* Advent 4211 */
616 .matches = {
617 DMI_MATCH(DMI_SYS_VENDOR, "DIXONSXP"),
618 DMI_MATCH(DMI_PRODUCT_NAME, "Advent 4211"),
619 },
620 },
621 {
622 /* Medion Akoya Mini E1210 */
623 .matches = {
624 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
625 DMI_MATCH(DMI_PRODUCT_NAME, "E1210"),
626 },
627 },
628 {
629 /* Medion Akoya E1222 */
630 .matches = {
631 DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
632 DMI_MATCH(DMI_PRODUCT_NAME, "E122X"),
633 },
634 },
635 {
636 /* Mivvy M310 */
637 .matches = {
638 DMI_MATCH(DMI_SYS_VENDOR, "VIOOO"),
639 DMI_MATCH(DMI_PRODUCT_NAME, "N10"),
640 },
641 },
642 {
643 /* Dell Vostro 1320 */
644 .matches = {
645 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
646 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1320"),
647 },
648 },
649 {
650 /* Dell Vostro 1520 */
651 .matches = {
652 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
653 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1520"),
654 },
655 },
656 {
657 /* Dell Vostro 1720 */
658 .matches = {
659 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
660 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1720"),
661 },
662 },
663 {
664 /* Lenovo Ideapad U455 */
665 .matches = {
666 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
667 DMI_MATCH(DMI_PRODUCT_NAME, "20046"),
668 },
669 },
670 {
671 /* Lenovo ThinkPad L460 */
672 .matches = {
673 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
674 DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L460"),
675 },
676 },
677 {
678 /* Clevo P650RS, 650RP6, Sager NP8152-S, and others */
679 .matches = {
680 DMI_MATCH(DMI_SYS_VENDOR, "Notebook"),
681 DMI_MATCH(DMI_PRODUCT_NAME, "P65xRP"),
682 },
683 },
684 {
685 /* Lenovo ThinkPad Twist S230u */
686 .matches = {
687 DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
688 DMI_MATCH(DMI_PRODUCT_NAME, "33474HU"),
689 },
690 },
691 {
692 /* Entroware Proteus */
693 .matches = {
694 DMI_MATCH(DMI_SYS_VENDOR, "Entroware"),
695 DMI_MATCH(DMI_PRODUCT_NAME, "Proteus"),
696 DMI_MATCH(DMI_PRODUCT_VERSION, "EL07R4"),
697 },
698 },
699 { }
700 };
701
702 #ifdef CONFIG_PNP
703 static const struct dmi_system_id __initconst i8042_dmi_nopnp_table[] = {
704 {
705 /* Intel MBO Desktop D845PESV */
706 .matches = {
707 DMI_MATCH(DMI_BOARD_NAME, "D845PESV"),
708 DMI_MATCH(DMI_BOARD_VENDOR, "Intel Corporation"),
709 },
710 },
711 {
712 /*
713 * Intel NUC D54250WYK - does not have i8042 controller but
714 * declares PS/2 devices in DSDT.
715 */
716 .matches = {
717 DMI_MATCH(DMI_BOARD_NAME, "D54250WYK"),
718 DMI_MATCH(DMI_BOARD_VENDOR, "Intel Corporation"),
719 },
720 },
721 {
722 /* MSI Wind U-100 */
723 .matches = {
724 DMI_MATCH(DMI_BOARD_NAME, "U-100"),
725 DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"),
726 },
727 },
728 {
729 /* Acer Aspire 5 A515 */
730 .matches = {
731 DMI_MATCH(DMI_BOARD_NAME, "Grumpy_PK"),
732 DMI_MATCH(DMI_BOARD_VENDOR, "PK"),
733 },
734 },
735 { }
736 };
737
738 static const struct dmi_system_id __initconst i8042_dmi_laptop_table[] = {
739 {
740 .matches = {
741 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
742 },
743 },
744 {
745 .matches = {
746 DMI_MATCH(DMI_CHASSIS_TYPE, "9"), /* Laptop */
747 },
748 },
749 {
750 .matches = {
751 DMI_MATCH(DMI_CHASSIS_TYPE, "10"), /* Notebook */
752 },
753 },
754 {
755 .matches = {
756 DMI_MATCH(DMI_CHASSIS_TYPE, "14"), /* Sub-Notebook */
757 },
758 },
759 { }
760 };
761 #endif
762
763 static const struct dmi_system_id __initconst i8042_dmi_notimeout_table[] = {
764 {
765 /* Dell Vostro V13 */
766 .matches = {
767 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
768 DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V13"),
769 },
770 },
771 {
772 /* Newer HP Pavilion dv4 models */
773 .matches = {
774 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
775 DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv4 Notebook PC"),
776 },
777 },
778 {
779 /* Fujitsu A544 laptop */
780 /* https://bugzilla.redhat.com/show_bug.cgi?id=1111138 */
781 .matches = {
782 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
783 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK A544"),
784 },
785 },
786 {
787 /* Fujitsu AH544 laptop */
788 /* https://bugzilla.kernel.org/show_bug.cgi?id=69731 */
789 .matches = {
790 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
791 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK AH544"),
792 },
793 },
794 {
795 /* Fujitsu U574 laptop */
796 /* https://bugzilla.kernel.org/show_bug.cgi?id=69731 */
797 .matches = {
798 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
799 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK U574"),
800 },
801 },
802 {
803 /* Fujitsu UH554 laptop */
804 .matches = {
805 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
806 DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK UH544"),
807 },
808 },
809 { }
810 };
811
812 /*
813 * Some Wistron based laptops need us to explicitly enable the 'Dritek
814 * keyboard extension' to make their extra keys start generating scancodes.
815 * Originally, this was just confined to older laptops, but a few Acer laptops
816 * have turned up in 2007 that also need this again.
817 */
818 static const struct dmi_system_id __initconst i8042_dmi_dritek_table[] = {
819 {
820 /* Acer Aspire 5100 */
821 .matches = {
822 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
823 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
824 },
825 },
826 {
827 /* Acer Aspire 5610 */
828 .matches = {
829 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
830 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
831 },
832 },
833 {
834 /* Acer Aspire 5630 */
835 .matches = {
836 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
837 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
838 },
839 },
840 {
841 /* Acer Aspire 5650 */
842 .matches = {
843 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
844 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
845 },
846 },
847 {
848 /* Acer Aspire 5680 */
849 .matches = {
850 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
851 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
852 },
853 },
854 {
855 /* Acer Aspire 5720 */
856 .matches = {
857 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
858 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5720"),
859 },
860 },
861 {
862 /* Acer Aspire 9110 */
863 .matches = {
864 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
865 DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
866 },
867 },
868 {
869 /* Acer TravelMate 660 */
870 .matches = {
871 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
872 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 660"),
873 },
874 },
875 {
876 /* Acer TravelMate 2490 */
877 .matches = {
878 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
879 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
880 },
881 },
882 {
883 /* Acer TravelMate 4280 */
884 .matches = {
885 DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
886 DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4280"),
887 },
888 },
889 { }
890 };
891
892 /*
893 * Some laptops need keyboard reset before probing for the trackpad to get
894 * it detected, initialised & finally work.
895 */
896 static const struct dmi_system_id __initconst i8042_dmi_kbdreset_table[] = {
897 {
898 /* Gigabyte P35 v2 - Elantech touchpad */
899 .matches = {
900 DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
901 DMI_MATCH(DMI_PRODUCT_NAME, "P35V2"),
902 },
903 },
904 {
905 /* Aorus branded Gigabyte X3 Plus - Elantech touchpad */
906 .matches = {
907 DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
908 DMI_MATCH(DMI_PRODUCT_NAME, "X3"),
909 },
910 },
911 {
912 /* Gigabyte P34 - Elantech touchpad */
913 .matches = {
914 DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
915 DMI_MATCH(DMI_PRODUCT_NAME, "P34"),
916 },
917 },
918 {
919 /* Gigabyte P57 - Elantech touchpad */
920 .matches = {
921 DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
922 DMI_MATCH(DMI_PRODUCT_NAME, "P57"),
923 },
924 },
925 {
926 /* Schenker XMG C504 - Elantech touchpad */
927 .matches = {
928 DMI_MATCH(DMI_SYS_VENDOR, "XMG"),
929 DMI_MATCH(DMI_PRODUCT_NAME, "C504"),
930 },
931 },
932 { }
933 };
934
935 #endif /* CONFIG_X86 */
936
937 #ifdef CONFIG_PNP
938 #include <linux/pnp.h>
939
940 static bool i8042_pnp_kbd_registered;
941 static unsigned int i8042_pnp_kbd_devices;
942 static bool i8042_pnp_aux_registered;
943 static unsigned int i8042_pnp_aux_devices;
944
945 static int i8042_pnp_command_reg;
946 static int i8042_pnp_data_reg;
947 static int i8042_pnp_kbd_irq;
948 static int i8042_pnp_aux_irq;
949
950 static char i8042_pnp_kbd_name[32];
951 static char i8042_pnp_aux_name[32];
952
i8042_pnp_id_to_string(struct pnp_id * id,char * dst,int dst_size)953 static void i8042_pnp_id_to_string(struct pnp_id *id, char *dst, int dst_size)
954 {
955 strlcpy(dst, "PNP:", dst_size);
956
957 while (id) {
958 strlcat(dst, " ", dst_size);
959 strlcat(dst, id->id, dst_size);
960 id = id->next;
961 }
962 }
963
i8042_pnp_kbd_probe(struct pnp_dev * dev,const struct pnp_device_id * did)964 static int i8042_pnp_kbd_probe(struct pnp_dev *dev, const struct pnp_device_id *did)
965 {
966 if (pnp_port_valid(dev, 0) && pnp_port_len(dev, 0) == 1)
967 i8042_pnp_data_reg = pnp_port_start(dev,0);
968
969 if (pnp_port_valid(dev, 1) && pnp_port_len(dev, 1) == 1)
970 i8042_pnp_command_reg = pnp_port_start(dev, 1);
971
972 if (pnp_irq_valid(dev,0))
973 i8042_pnp_kbd_irq = pnp_irq(dev, 0);
974
975 strlcpy(i8042_pnp_kbd_name, did->id, sizeof(i8042_pnp_kbd_name));
976 if (strlen(pnp_dev_name(dev))) {
977 strlcat(i8042_pnp_kbd_name, ":", sizeof(i8042_pnp_kbd_name));
978 strlcat(i8042_pnp_kbd_name, pnp_dev_name(dev), sizeof(i8042_pnp_kbd_name));
979 }
980 i8042_pnp_id_to_string(dev->id, i8042_kbd_firmware_id,
981 sizeof(i8042_kbd_firmware_id));
982
983 /* Keyboard ports are always supposed to be wakeup-enabled */
984 device_set_wakeup_enable(&dev->dev, true);
985
986 i8042_pnp_kbd_devices++;
987 return 0;
988 }
989
i8042_pnp_aux_probe(struct pnp_dev * dev,const struct pnp_device_id * did)990 static int i8042_pnp_aux_probe(struct pnp_dev *dev, const struct pnp_device_id *did)
991 {
992 if (pnp_port_valid(dev, 0) && pnp_port_len(dev, 0) == 1)
993 i8042_pnp_data_reg = pnp_port_start(dev,0);
994
995 if (pnp_port_valid(dev, 1) && pnp_port_len(dev, 1) == 1)
996 i8042_pnp_command_reg = pnp_port_start(dev, 1);
997
998 if (pnp_irq_valid(dev, 0))
999 i8042_pnp_aux_irq = pnp_irq(dev, 0);
1000
1001 strlcpy(i8042_pnp_aux_name, did->id, sizeof(i8042_pnp_aux_name));
1002 if (strlen(pnp_dev_name(dev))) {
1003 strlcat(i8042_pnp_aux_name, ":", sizeof(i8042_pnp_aux_name));
1004 strlcat(i8042_pnp_aux_name, pnp_dev_name(dev), sizeof(i8042_pnp_aux_name));
1005 }
1006 i8042_pnp_id_to_string(dev->id, i8042_aux_firmware_id,
1007 sizeof(i8042_aux_firmware_id));
1008
1009 i8042_pnp_aux_devices++;
1010 return 0;
1011 }
1012
1013 static const struct pnp_device_id pnp_kbd_devids[] = {
1014 { .id = "PNP0300", .driver_data = 0 },
1015 { .id = "PNP0301", .driver_data = 0 },
1016 { .id = "PNP0302", .driver_data = 0 },
1017 { .id = "PNP0303", .driver_data = 0 },
1018 { .id = "PNP0304", .driver_data = 0 },
1019 { .id = "PNP0305", .driver_data = 0 },
1020 { .id = "PNP0306", .driver_data = 0 },
1021 { .id = "PNP0309", .driver_data = 0 },
1022 { .id = "PNP030a", .driver_data = 0 },
1023 { .id = "PNP030b", .driver_data = 0 },
1024 { .id = "PNP0320", .driver_data = 0 },
1025 { .id = "PNP0343", .driver_data = 0 },
1026 { .id = "PNP0344", .driver_data = 0 },
1027 { .id = "PNP0345", .driver_data = 0 },
1028 { .id = "CPQA0D7", .driver_data = 0 },
1029 { .id = "", },
1030 };
1031 MODULE_DEVICE_TABLE(pnp, pnp_kbd_devids);
1032
1033 static struct pnp_driver i8042_pnp_kbd_driver = {
1034 .name = "i8042 kbd",
1035 .id_table = pnp_kbd_devids,
1036 .probe = i8042_pnp_kbd_probe,
1037 .driver = {
1038 .probe_type = PROBE_FORCE_SYNCHRONOUS,
1039 .suppress_bind_attrs = true,
1040 },
1041 };
1042
1043 static const struct pnp_device_id pnp_aux_devids[] = {
1044 { .id = "AUI0200", .driver_data = 0 },
1045 { .id = "FJC6000", .driver_data = 0 },
1046 { .id = "FJC6001", .driver_data = 0 },
1047 { .id = "PNP0f03", .driver_data = 0 },
1048 { .id = "PNP0f0b", .driver_data = 0 },
1049 { .id = "PNP0f0e", .driver_data = 0 },
1050 { .id = "PNP0f12", .driver_data = 0 },
1051 { .id = "PNP0f13", .driver_data = 0 },
1052 { .id = "PNP0f19", .driver_data = 0 },
1053 { .id = "PNP0f1c", .driver_data = 0 },
1054 { .id = "SYN0801", .driver_data = 0 },
1055 { .id = "", },
1056 };
1057 MODULE_DEVICE_TABLE(pnp, pnp_aux_devids);
1058
1059 static struct pnp_driver i8042_pnp_aux_driver = {
1060 .name = "i8042 aux",
1061 .id_table = pnp_aux_devids,
1062 .probe = i8042_pnp_aux_probe,
1063 .driver = {
1064 .probe_type = PROBE_FORCE_SYNCHRONOUS,
1065 .suppress_bind_attrs = true,
1066 },
1067 };
1068
i8042_pnp_exit(void)1069 static void i8042_pnp_exit(void)
1070 {
1071 if (i8042_pnp_kbd_registered) {
1072 i8042_pnp_kbd_registered = false;
1073 pnp_unregister_driver(&i8042_pnp_kbd_driver);
1074 }
1075
1076 if (i8042_pnp_aux_registered) {
1077 i8042_pnp_aux_registered = false;
1078 pnp_unregister_driver(&i8042_pnp_aux_driver);
1079 }
1080 }
1081
i8042_pnp_init(void)1082 static int __init i8042_pnp_init(void)
1083 {
1084 char kbd_irq_str[4] = { 0 }, aux_irq_str[4] = { 0 };
1085 bool pnp_data_busted = false;
1086 int err;
1087
1088 #ifdef CONFIG_X86
1089 if (dmi_check_system(i8042_dmi_nopnp_table))
1090 i8042_nopnp = true;
1091 #endif
1092
1093 if (i8042_nopnp) {
1094 pr_info("PNP detection disabled\n");
1095 return 0;
1096 }
1097
1098 err = pnp_register_driver(&i8042_pnp_kbd_driver);
1099 if (!err)
1100 i8042_pnp_kbd_registered = true;
1101
1102 err = pnp_register_driver(&i8042_pnp_aux_driver);
1103 if (!err)
1104 i8042_pnp_aux_registered = true;
1105
1106 if (!i8042_pnp_kbd_devices && !i8042_pnp_aux_devices) {
1107 i8042_pnp_exit();
1108 #if defined(__ia64__)
1109 return -ENODEV;
1110 #else
1111 pr_info("PNP: No PS/2 controller found.\n");
1112 if (x86_platform.legacy.i8042 !=
1113 X86_LEGACY_I8042_EXPECTED_PRESENT)
1114 return -ENODEV;
1115 pr_info("Probing ports directly.\n");
1116 return 0;
1117 #endif
1118 }
1119
1120 if (i8042_pnp_kbd_devices)
1121 snprintf(kbd_irq_str, sizeof(kbd_irq_str),
1122 "%d", i8042_pnp_kbd_irq);
1123 if (i8042_pnp_aux_devices)
1124 snprintf(aux_irq_str, sizeof(aux_irq_str),
1125 "%d", i8042_pnp_aux_irq);
1126
1127 pr_info("PNP: PS/2 Controller [%s%s%s] at %#x,%#x irq %s%s%s\n",
1128 i8042_pnp_kbd_name, (i8042_pnp_kbd_devices && i8042_pnp_aux_devices) ? "," : "",
1129 i8042_pnp_aux_name,
1130 i8042_pnp_data_reg, i8042_pnp_command_reg,
1131 kbd_irq_str, (i8042_pnp_kbd_devices && i8042_pnp_aux_devices) ? "," : "",
1132 aux_irq_str);
1133
1134 #if defined(__ia64__)
1135 if (!i8042_pnp_kbd_devices)
1136 i8042_nokbd = true;
1137 if (!i8042_pnp_aux_devices)
1138 i8042_noaux = true;
1139 #endif
1140
1141 if (((i8042_pnp_data_reg & ~0xf) == (i8042_data_reg & ~0xf) &&
1142 i8042_pnp_data_reg != i8042_data_reg) ||
1143 !i8042_pnp_data_reg) {
1144 pr_warn("PNP: PS/2 controller has invalid data port %#x; using default %#x\n",
1145 i8042_pnp_data_reg, i8042_data_reg);
1146 i8042_pnp_data_reg = i8042_data_reg;
1147 pnp_data_busted = true;
1148 }
1149
1150 if (((i8042_pnp_command_reg & ~0xf) == (i8042_command_reg & ~0xf) &&
1151 i8042_pnp_command_reg != i8042_command_reg) ||
1152 !i8042_pnp_command_reg) {
1153 pr_warn("PNP: PS/2 controller has invalid command port %#x; using default %#x\n",
1154 i8042_pnp_command_reg, i8042_command_reg);
1155 i8042_pnp_command_reg = i8042_command_reg;
1156 pnp_data_busted = true;
1157 }
1158
1159 if (!i8042_nokbd && !i8042_pnp_kbd_irq) {
1160 pr_warn("PNP: PS/2 controller doesn't have KBD irq; using default %d\n",
1161 i8042_kbd_irq);
1162 i8042_pnp_kbd_irq = i8042_kbd_irq;
1163 pnp_data_busted = true;
1164 }
1165
1166 if (!i8042_noaux && !i8042_pnp_aux_irq) {
1167 if (!pnp_data_busted && i8042_pnp_kbd_irq) {
1168 pr_warn("PNP: PS/2 appears to have AUX port disabled, "
1169 "if this is incorrect please boot with i8042.nopnp\n");
1170 i8042_noaux = true;
1171 } else {
1172 pr_warn("PNP: PS/2 controller doesn't have AUX irq; using default %d\n",
1173 i8042_aux_irq);
1174 i8042_pnp_aux_irq = i8042_aux_irq;
1175 }
1176 }
1177
1178 i8042_data_reg = i8042_pnp_data_reg;
1179 i8042_command_reg = i8042_pnp_command_reg;
1180 i8042_kbd_irq = i8042_pnp_kbd_irq;
1181 i8042_aux_irq = i8042_pnp_aux_irq;
1182
1183 #ifdef CONFIG_X86
1184 i8042_bypass_aux_irq_test = !pnp_data_busted &&
1185 dmi_check_system(i8042_dmi_laptop_table);
1186 #endif
1187
1188 return 0;
1189 }
1190
1191 #else /* !CONFIG_PNP */
i8042_pnp_init(void)1192 static inline int i8042_pnp_init(void) { return 0; }
i8042_pnp_exit(void)1193 static inline void i8042_pnp_exit(void) { }
1194 #endif /* CONFIG_PNP */
1195
i8042_platform_init(void)1196 static int __init i8042_platform_init(void)
1197 {
1198 int retval;
1199
1200 #ifdef CONFIG_X86
1201 u8 a20_on = 0xdf;
1202 /* Just return if platform does not have i8042 controller */
1203 if (x86_platform.legacy.i8042 == X86_LEGACY_I8042_PLATFORM_ABSENT)
1204 return -ENODEV;
1205 #endif
1206
1207 /*
1208 * On ix86 platforms touching the i8042 data register region can do really
1209 * bad things. Because of this the region is always reserved on ix86 boxes.
1210 *
1211 * if (!request_region(I8042_DATA_REG, 16, "i8042"))
1212 * return -EBUSY;
1213 */
1214
1215 i8042_kbd_irq = I8042_MAP_IRQ(1);
1216 i8042_aux_irq = I8042_MAP_IRQ(12);
1217
1218 retval = i8042_pnp_init();
1219 if (retval)
1220 return retval;
1221
1222 #if defined(__ia64__)
1223 i8042_reset = I8042_RESET_ALWAYS;
1224 #endif
1225
1226 #ifdef CONFIG_X86
1227 /* Honor module parameter when value is not default */
1228 if (i8042_reset == I8042_RESET_DEFAULT) {
1229 if (dmi_check_system(i8042_dmi_reset_table))
1230 i8042_reset = I8042_RESET_ALWAYS;
1231
1232 if (dmi_check_system(i8042_dmi_noselftest_table))
1233 i8042_reset = I8042_RESET_NEVER;
1234 }
1235
1236 if (dmi_check_system(i8042_dmi_noloop_table))
1237 i8042_noloop = true;
1238
1239 if (dmi_check_system(i8042_dmi_nomux_table))
1240 i8042_nomux = true;
1241
1242 if (dmi_check_system(i8042_dmi_forcemux_table))
1243 i8042_nomux = false;
1244
1245 if (dmi_check_system(i8042_dmi_notimeout_table))
1246 i8042_notimeout = true;
1247
1248 if (dmi_check_system(i8042_dmi_dritek_table))
1249 i8042_dritek = true;
1250
1251 if (dmi_check_system(i8042_dmi_kbdreset_table))
1252 i8042_kbdreset = true;
1253
1254 /*
1255 * A20 was already enabled during early kernel init. But some buggy
1256 * BIOSes (in MSI Laptops) require A20 to be enabled using 8042 to
1257 * resume from S3. So we do it here and hope that nothing breaks.
1258 */
1259 i8042_command(&a20_on, 0x10d1);
1260 i8042_command(NULL, 0x00ff); /* Null command for SMM firmware */
1261 #endif /* CONFIG_X86 */
1262
1263 return retval;
1264 }
1265
i8042_platform_exit(void)1266 static inline void i8042_platform_exit(void)
1267 {
1268 i8042_pnp_exit();
1269 }
1270
1271 #endif /* _I8042_X86IA64IO_H */
1272