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 		.matches = {
434 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
435 			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 1360"),
436 		},
437 	},
438 	{
439 		/* Acer Aspire 5710 */
440 		.matches = {
441 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
442 			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5710"),
443 		},
444 	},
445 	{
446 		/* Acer Aspire 7738 */
447 		.matches = {
448 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
449 			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 7738"),
450 		},
451 	},
452 	{
453 		/* Gericom Bellagio */
454 		.matches = {
455 			DMI_MATCH(DMI_SYS_VENDOR, "Gericom"),
456 			DMI_MATCH(DMI_PRODUCT_NAME, "N34AS6"),
457 		},
458 	},
459 	{
460 		/* IBM 2656 */
461 		.matches = {
462 			DMI_MATCH(DMI_SYS_VENDOR, "IBM"),
463 			DMI_MATCH(DMI_PRODUCT_NAME, "2656"),
464 		},
465 	},
466 	{
467 		/* Dell XPS M1530 */
468 		.matches = {
469 			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
470 			DMI_MATCH(DMI_PRODUCT_NAME, "XPS M1530"),
471 		},
472 	},
473 	{
474 		/* Compal HEL80I */
475 		.matches = {
476 			DMI_MATCH(DMI_SYS_VENDOR, "COMPAL"),
477 			DMI_MATCH(DMI_PRODUCT_NAME, "HEL80I"),
478 		},
479 	},
480 	{
481 		/* Dell Vostro 1510 */
482 		.matches = {
483 			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
484 			DMI_MATCH(DMI_PRODUCT_NAME, "Vostro1510"),
485 		},
486 	},
487 	{
488 		/* Acer Aspire 5536 */
489 		.matches = {
490 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
491 			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5536"),
492 			DMI_MATCH(DMI_PRODUCT_VERSION, "0100"),
493 		},
494 	},
495 	{
496 		/* Dell Vostro V13 */
497 		.matches = {
498 			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
499 			DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V13"),
500 		},
501 	},
502 	{
503 		/* Newer HP Pavilion dv4 models */
504 		.matches = {
505 			DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
506 			DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv4 Notebook PC"),
507 		},
508 	},
509 	{
510 		/* Asus X450LCP */
511 		.matches = {
512 			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
513 			DMI_MATCH(DMI_PRODUCT_NAME, "X450LCP"),
514 		},
515 	},
516 	{
517 		/* Avatar AVIU-145A6 */
518 		.matches = {
519 			DMI_MATCH(DMI_SYS_VENDOR, "Intel"),
520 			DMI_MATCH(DMI_PRODUCT_NAME, "IC4I"),
521 		},
522 	},
523 	{
524 		/* TUXEDO BU1406 */
525 		.matches = {
526 			DMI_MATCH(DMI_SYS_VENDOR, "Notebook"),
527 			DMI_MATCH(DMI_PRODUCT_NAME, "N24_25BU"),
528 		},
529 	},
530 	{
531 		/* Lenovo LaVie Z */
532 		.matches = {
533 			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
534 			DMI_MATCH(DMI_PRODUCT_VERSION, "Lenovo LaVie Z"),
535 		},
536 	},
537 	{ }
538 };
539 
540 static const struct dmi_system_id i8042_dmi_forcemux_table[] __initconst = {
541 	{
542 		/*
543 		 * Sony Vaio VGN-CS series require MUX or the touch sensor
544 		 * buttons will disturb touchpad operation
545 		 */
546 		.matches = {
547 			DMI_MATCH(DMI_SYS_VENDOR, "Sony Corporation"),
548 			DMI_MATCH(DMI_PRODUCT_NAME, "VGN-CS"),
549 		},
550 	},
551 	{ }
552 };
553 
554 /*
555  * On some Asus laptops, just running self tests cause problems.
556  */
557 static const struct dmi_system_id i8042_dmi_noselftest_table[] = {
558 	{
559 		.matches = {
560 			DMI_MATCH(DMI_SYS_VENDOR, "ASUSTeK COMPUTER INC."),
561 			DMI_MATCH(DMI_CHASSIS_TYPE, "10"), /* Notebook */
562 		},
563 	},
564 	{ }
565 };
566 static const struct dmi_system_id __initconst i8042_dmi_reset_table[] = {
567 	{
568 		/* MSI Wind U-100 */
569 		.matches = {
570 			DMI_MATCH(DMI_BOARD_NAME, "U-100"),
571 			DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"),
572 		},
573 	},
574 	{
575 		/* LG Electronics X110 */
576 		.matches = {
577 			DMI_MATCH(DMI_BOARD_NAME, "X110"),
578 			DMI_MATCH(DMI_BOARD_VENDOR, "LG Electronics Inc."),
579 		},
580 	},
581 	{
582 		/* Acer Aspire One 150 */
583 		.matches = {
584 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
585 			DMI_MATCH(DMI_PRODUCT_NAME, "AOA150"),
586 		},
587 	},
588 	{
589 		/* Advent 4211 */
590 		.matches = {
591 			DMI_MATCH(DMI_SYS_VENDOR, "DIXONSXP"),
592 			DMI_MATCH(DMI_PRODUCT_NAME, "Advent 4211"),
593 		},
594 	},
595 	{
596 		/* Medion Akoya Mini E1210 */
597 		.matches = {
598 			DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
599 			DMI_MATCH(DMI_PRODUCT_NAME, "E1210"),
600 		},
601 	},
602 	{
603 		/* Medion Akoya E1222 */
604 		.matches = {
605 			DMI_MATCH(DMI_SYS_VENDOR, "MEDION"),
606 			DMI_MATCH(DMI_PRODUCT_NAME, "E122X"),
607 		},
608 	},
609 	{
610 		/* Mivvy M310 */
611 		.matches = {
612 			DMI_MATCH(DMI_SYS_VENDOR, "VIOOO"),
613 			DMI_MATCH(DMI_PRODUCT_NAME, "N10"),
614 		},
615 	},
616 	{
617 		/* Dell Vostro 1320 */
618 		.matches = {
619 			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
620 			DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1320"),
621 		},
622 	},
623 	{
624 		/* Dell Vostro 1520 */
625 		.matches = {
626 			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
627 			DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1520"),
628 		},
629 	},
630 	{
631 		/* Dell Vostro 1720 */
632 		.matches = {
633 			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
634 			DMI_MATCH(DMI_PRODUCT_NAME, "Vostro 1720"),
635 		},
636 	},
637 	{
638 		/* Lenovo Ideapad U455 */
639 		.matches = {
640 			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
641 			DMI_MATCH(DMI_PRODUCT_NAME, "20046"),
642 		},
643 	},
644 	{
645 		/* Lenovo ThinkPad L460 */
646 		.matches = {
647 			DMI_MATCH(DMI_SYS_VENDOR, "LENOVO"),
648 			DMI_MATCH(DMI_PRODUCT_VERSION, "ThinkPad L460"),
649 		},
650 	},
651 	{
652 		/* Clevo P650RS, 650RP6, Sager NP8152-S, and others */
653 		.matches = {
654 			DMI_MATCH(DMI_SYS_VENDOR, "Notebook"),
655 			DMI_MATCH(DMI_PRODUCT_NAME, "P65xRP"),
656 		},
657 	},
658 	{ }
659 };
660 
661 #ifdef CONFIG_PNP
662 static const struct dmi_system_id __initconst i8042_dmi_nopnp_table[] = {
663 	{
664 		/* Intel MBO Desktop D845PESV */
665 		.matches = {
666 			DMI_MATCH(DMI_BOARD_NAME, "D845PESV"),
667 			DMI_MATCH(DMI_BOARD_VENDOR, "Intel Corporation"),
668 		},
669 	},
670 	{
671 		/*
672 		 * Intel NUC D54250WYK - does not have i8042 controller but
673 		 * declares PS/2 devices in DSDT.
674 		 */
675 		.matches = {
676 			DMI_MATCH(DMI_BOARD_NAME, "D54250WYK"),
677 			DMI_MATCH(DMI_BOARD_VENDOR, "Intel Corporation"),
678 		},
679 	},
680 	{
681 		/* MSI Wind U-100 */
682 		.matches = {
683 			DMI_MATCH(DMI_BOARD_NAME, "U-100"),
684 			DMI_MATCH(DMI_BOARD_VENDOR, "MICRO-STAR INTERNATIONAL CO., LTD"),
685 		},
686 	},
687 	{ }
688 };
689 
690 static const struct dmi_system_id __initconst i8042_dmi_laptop_table[] = {
691 	{
692 		.matches = {
693 			DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
694 		},
695 	},
696 	{
697 		.matches = {
698 			DMI_MATCH(DMI_CHASSIS_TYPE, "9"), /* Laptop */
699 		},
700 	},
701 	{
702 		.matches = {
703 			DMI_MATCH(DMI_CHASSIS_TYPE, "10"), /* Notebook */
704 		},
705 	},
706 	{
707 		.matches = {
708 			DMI_MATCH(DMI_CHASSIS_TYPE, "14"), /* Sub-Notebook */
709 		},
710 	},
711 	{ }
712 };
713 #endif
714 
715 static const struct dmi_system_id __initconst i8042_dmi_notimeout_table[] = {
716 	{
717 		/* Dell Vostro V13 */
718 		.matches = {
719 			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
720 			DMI_MATCH(DMI_PRODUCT_NAME, "Vostro V13"),
721 		},
722 	},
723 	{
724 		/* Newer HP Pavilion dv4 models */
725 		.matches = {
726 			DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
727 			DMI_MATCH(DMI_PRODUCT_NAME, "HP Pavilion dv4 Notebook PC"),
728 		},
729 	},
730 	{
731 		/* Fujitsu A544 laptop */
732 		/* https://bugzilla.redhat.com/show_bug.cgi?id=1111138 */
733 		.matches = {
734 			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
735 			DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK A544"),
736 		},
737 	},
738 	{
739 		/* Fujitsu AH544 laptop */
740 		/* https://bugzilla.kernel.org/show_bug.cgi?id=69731 */
741 		.matches = {
742 			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
743 			DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK AH544"),
744 		},
745 	},
746 	{
747 		/* Fujitsu U574 laptop */
748 		/* https://bugzilla.kernel.org/show_bug.cgi?id=69731 */
749 		.matches = {
750 			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
751 			DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK U574"),
752 		},
753 	},
754 	{
755 		/* Fujitsu UH554 laptop */
756 		.matches = {
757 			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU"),
758 			DMI_MATCH(DMI_PRODUCT_NAME, "LIFEBOOK UH544"),
759 		},
760 	},
761 	{ }
762 };
763 
764 /*
765  * Some Wistron based laptops need us to explicitly enable the 'Dritek
766  * keyboard extension' to make their extra keys start generating scancodes.
767  * Originally, this was just confined to older laptops, but a few Acer laptops
768  * have turned up in 2007 that also need this again.
769  */
770 static const struct dmi_system_id __initconst i8042_dmi_dritek_table[] = {
771 	{
772 		/* Acer Aspire 5100 */
773 		.matches = {
774 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
775 			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5100"),
776 		},
777 	},
778 	{
779 		/* Acer Aspire 5610 */
780 		.matches = {
781 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
782 			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5610"),
783 		},
784 	},
785 	{
786 		/* Acer Aspire 5630 */
787 		.matches = {
788 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
789 			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5630"),
790 		},
791 	},
792 	{
793 		/* Acer Aspire 5650 */
794 		.matches = {
795 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
796 			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5650"),
797 		},
798 	},
799 	{
800 		/* Acer Aspire 5680 */
801 		.matches = {
802 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
803 			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5680"),
804 		},
805 	},
806 	{
807 		/* Acer Aspire 5720 */
808 		.matches = {
809 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
810 			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 5720"),
811 		},
812 	},
813 	{
814 		/* Acer Aspire 9110 */
815 		.matches = {
816 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
817 			DMI_MATCH(DMI_PRODUCT_NAME, "Aspire 9110"),
818 		},
819 	},
820 	{
821 		/* Acer TravelMate 660 */
822 		.matches = {
823 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
824 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 660"),
825 		},
826 	},
827 	{
828 		/* Acer TravelMate 2490 */
829 		.matches = {
830 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
831 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 2490"),
832 		},
833 	},
834 	{
835 		/* Acer TravelMate 4280 */
836 		.matches = {
837 			DMI_MATCH(DMI_SYS_VENDOR, "Acer"),
838 			DMI_MATCH(DMI_PRODUCT_NAME, "TravelMate 4280"),
839 		},
840 	},
841 	{ }
842 };
843 
844 /*
845  * Some laptops need keyboard reset before probing for the trackpad to get
846  * it detected, initialised & finally work.
847  */
848 static const struct dmi_system_id __initconst i8042_dmi_kbdreset_table[] = {
849 	{
850 		/* Gigabyte P35 v2 - Elantech touchpad */
851 		.matches = {
852 			DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
853 			DMI_MATCH(DMI_PRODUCT_NAME, "P35V2"),
854 		},
855 	},
856 		{
857 		/* Aorus branded Gigabyte X3 Plus - Elantech touchpad */
858 		.matches = {
859 			DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
860 			DMI_MATCH(DMI_PRODUCT_NAME, "X3"),
861 		},
862 	},
863 	{
864 		/* Gigabyte P34 - Elantech touchpad */
865 		.matches = {
866 			DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
867 			DMI_MATCH(DMI_PRODUCT_NAME, "P34"),
868 		},
869 	},
870 	{
871 		/* Gigabyte P57 - Elantech touchpad */
872 		.matches = {
873 			DMI_MATCH(DMI_SYS_VENDOR, "GIGABYTE"),
874 			DMI_MATCH(DMI_PRODUCT_NAME, "P57"),
875 		},
876 	},
877 	{
878 		/* Schenker XMG C504 - Elantech touchpad */
879 		.matches = {
880 			DMI_MATCH(DMI_SYS_VENDOR, "XMG"),
881 			DMI_MATCH(DMI_PRODUCT_NAME, "C504"),
882 		},
883 	},
884 	{ }
885 };
886 
887 #endif /* CONFIG_X86 */
888 
889 #ifdef CONFIG_PNP
890 #include <linux/pnp.h>
891 
892 static bool i8042_pnp_kbd_registered;
893 static unsigned int i8042_pnp_kbd_devices;
894 static bool i8042_pnp_aux_registered;
895 static unsigned int i8042_pnp_aux_devices;
896 
897 static int i8042_pnp_command_reg;
898 static int i8042_pnp_data_reg;
899 static int i8042_pnp_kbd_irq;
900 static int i8042_pnp_aux_irq;
901 
902 static char i8042_pnp_kbd_name[32];
903 static char i8042_pnp_aux_name[32];
904 
i8042_pnp_id_to_string(struct pnp_id * id,char * dst,int dst_size)905 static void i8042_pnp_id_to_string(struct pnp_id *id, char *dst, int dst_size)
906 {
907 	strlcpy(dst, "PNP:", dst_size);
908 
909 	while (id) {
910 		strlcat(dst, " ", dst_size);
911 		strlcat(dst, id->id, dst_size);
912 		id = id->next;
913 	}
914 }
915 
i8042_pnp_kbd_probe(struct pnp_dev * dev,const struct pnp_device_id * did)916 static int i8042_pnp_kbd_probe(struct pnp_dev *dev, const struct pnp_device_id *did)
917 {
918 	if (pnp_port_valid(dev, 0) && pnp_port_len(dev, 0) == 1)
919 		i8042_pnp_data_reg = pnp_port_start(dev,0);
920 
921 	if (pnp_port_valid(dev, 1) && pnp_port_len(dev, 1) == 1)
922 		i8042_pnp_command_reg = pnp_port_start(dev, 1);
923 
924 	if (pnp_irq_valid(dev,0))
925 		i8042_pnp_kbd_irq = pnp_irq(dev, 0);
926 
927 	strlcpy(i8042_pnp_kbd_name, did->id, sizeof(i8042_pnp_kbd_name));
928 	if (strlen(pnp_dev_name(dev))) {
929 		strlcat(i8042_pnp_kbd_name, ":", sizeof(i8042_pnp_kbd_name));
930 		strlcat(i8042_pnp_kbd_name, pnp_dev_name(dev), sizeof(i8042_pnp_kbd_name));
931 	}
932 	i8042_pnp_id_to_string(dev->id, i8042_kbd_firmware_id,
933 			       sizeof(i8042_kbd_firmware_id));
934 
935 	/* Keyboard ports are always supposed to be wakeup-enabled */
936 	device_set_wakeup_enable(&dev->dev, true);
937 
938 	i8042_pnp_kbd_devices++;
939 	return 0;
940 }
941 
i8042_pnp_aux_probe(struct pnp_dev * dev,const struct pnp_device_id * did)942 static int i8042_pnp_aux_probe(struct pnp_dev *dev, const struct pnp_device_id *did)
943 {
944 	if (pnp_port_valid(dev, 0) && pnp_port_len(dev, 0) == 1)
945 		i8042_pnp_data_reg = pnp_port_start(dev,0);
946 
947 	if (pnp_port_valid(dev, 1) && pnp_port_len(dev, 1) == 1)
948 		i8042_pnp_command_reg = pnp_port_start(dev, 1);
949 
950 	if (pnp_irq_valid(dev, 0))
951 		i8042_pnp_aux_irq = pnp_irq(dev, 0);
952 
953 	strlcpy(i8042_pnp_aux_name, did->id, sizeof(i8042_pnp_aux_name));
954 	if (strlen(pnp_dev_name(dev))) {
955 		strlcat(i8042_pnp_aux_name, ":", sizeof(i8042_pnp_aux_name));
956 		strlcat(i8042_pnp_aux_name, pnp_dev_name(dev), sizeof(i8042_pnp_aux_name));
957 	}
958 	i8042_pnp_id_to_string(dev->id, i8042_aux_firmware_id,
959 			       sizeof(i8042_aux_firmware_id));
960 
961 	i8042_pnp_aux_devices++;
962 	return 0;
963 }
964 
965 static const struct pnp_device_id pnp_kbd_devids[] = {
966 	{ .id = "PNP0300", .driver_data = 0 },
967 	{ .id = "PNP0301", .driver_data = 0 },
968 	{ .id = "PNP0302", .driver_data = 0 },
969 	{ .id = "PNP0303", .driver_data = 0 },
970 	{ .id = "PNP0304", .driver_data = 0 },
971 	{ .id = "PNP0305", .driver_data = 0 },
972 	{ .id = "PNP0306", .driver_data = 0 },
973 	{ .id = "PNP0309", .driver_data = 0 },
974 	{ .id = "PNP030a", .driver_data = 0 },
975 	{ .id = "PNP030b", .driver_data = 0 },
976 	{ .id = "PNP0320", .driver_data = 0 },
977 	{ .id = "PNP0343", .driver_data = 0 },
978 	{ .id = "PNP0344", .driver_data = 0 },
979 	{ .id = "PNP0345", .driver_data = 0 },
980 	{ .id = "CPQA0D7", .driver_data = 0 },
981 	{ .id = "", },
982 };
983 MODULE_DEVICE_TABLE(pnp, pnp_kbd_devids);
984 
985 static struct pnp_driver i8042_pnp_kbd_driver = {
986 	.name           = "i8042 kbd",
987 	.id_table       = pnp_kbd_devids,
988 	.probe          = i8042_pnp_kbd_probe,
989 	.driver         = {
990 		.probe_type = PROBE_FORCE_SYNCHRONOUS,
991 		.suppress_bind_attrs = true,
992 	},
993 };
994 
995 static const struct pnp_device_id pnp_aux_devids[] = {
996 	{ .id = "AUI0200", .driver_data = 0 },
997 	{ .id = "FJC6000", .driver_data = 0 },
998 	{ .id = "FJC6001", .driver_data = 0 },
999 	{ .id = "PNP0f03", .driver_data = 0 },
1000 	{ .id = "PNP0f0b", .driver_data = 0 },
1001 	{ .id = "PNP0f0e", .driver_data = 0 },
1002 	{ .id = "PNP0f12", .driver_data = 0 },
1003 	{ .id = "PNP0f13", .driver_data = 0 },
1004 	{ .id = "PNP0f19", .driver_data = 0 },
1005 	{ .id = "PNP0f1c", .driver_data = 0 },
1006 	{ .id = "SYN0801", .driver_data = 0 },
1007 	{ .id = "", },
1008 };
1009 MODULE_DEVICE_TABLE(pnp, pnp_aux_devids);
1010 
1011 static struct pnp_driver i8042_pnp_aux_driver = {
1012 	.name           = "i8042 aux",
1013 	.id_table       = pnp_aux_devids,
1014 	.probe          = i8042_pnp_aux_probe,
1015 	.driver         = {
1016 		.probe_type = PROBE_FORCE_SYNCHRONOUS,
1017 		.suppress_bind_attrs = true,
1018 	},
1019 };
1020 
i8042_pnp_exit(void)1021 static void i8042_pnp_exit(void)
1022 {
1023 	if (i8042_pnp_kbd_registered) {
1024 		i8042_pnp_kbd_registered = false;
1025 		pnp_unregister_driver(&i8042_pnp_kbd_driver);
1026 	}
1027 
1028 	if (i8042_pnp_aux_registered) {
1029 		i8042_pnp_aux_registered = false;
1030 		pnp_unregister_driver(&i8042_pnp_aux_driver);
1031 	}
1032 }
1033 
i8042_pnp_init(void)1034 static int __init i8042_pnp_init(void)
1035 {
1036 	char kbd_irq_str[4] = { 0 }, aux_irq_str[4] = { 0 };
1037 	bool pnp_data_busted = false;
1038 	int err;
1039 
1040 #ifdef CONFIG_X86
1041 	if (dmi_check_system(i8042_dmi_nopnp_table))
1042 		i8042_nopnp = true;
1043 #endif
1044 
1045 	if (i8042_nopnp) {
1046 		pr_info("PNP detection disabled\n");
1047 		return 0;
1048 	}
1049 
1050 	err = pnp_register_driver(&i8042_pnp_kbd_driver);
1051 	if (!err)
1052 		i8042_pnp_kbd_registered = true;
1053 
1054 	err = pnp_register_driver(&i8042_pnp_aux_driver);
1055 	if (!err)
1056 		i8042_pnp_aux_registered = true;
1057 
1058 	if (!i8042_pnp_kbd_devices && !i8042_pnp_aux_devices) {
1059 		i8042_pnp_exit();
1060 #if defined(__ia64__)
1061 		return -ENODEV;
1062 #else
1063 		pr_info("PNP: No PS/2 controller found.\n");
1064 		if (x86_platform.legacy.i8042 !=
1065 				X86_LEGACY_I8042_EXPECTED_PRESENT)
1066 			return -ENODEV;
1067 		pr_info("Probing ports directly.\n");
1068 		return 0;
1069 #endif
1070 	}
1071 
1072 	if (i8042_pnp_kbd_devices)
1073 		snprintf(kbd_irq_str, sizeof(kbd_irq_str),
1074 			"%d", i8042_pnp_kbd_irq);
1075 	if (i8042_pnp_aux_devices)
1076 		snprintf(aux_irq_str, sizeof(aux_irq_str),
1077 			"%d", i8042_pnp_aux_irq);
1078 
1079 	pr_info("PNP: PS/2 Controller [%s%s%s] at %#x,%#x irq %s%s%s\n",
1080 		i8042_pnp_kbd_name, (i8042_pnp_kbd_devices && i8042_pnp_aux_devices) ? "," : "",
1081 		i8042_pnp_aux_name,
1082 		i8042_pnp_data_reg, i8042_pnp_command_reg,
1083 		kbd_irq_str, (i8042_pnp_kbd_devices && i8042_pnp_aux_devices) ? "," : "",
1084 		aux_irq_str);
1085 
1086 #if defined(__ia64__)
1087 	if (!i8042_pnp_kbd_devices)
1088 		i8042_nokbd = true;
1089 	if (!i8042_pnp_aux_devices)
1090 		i8042_noaux = true;
1091 #endif
1092 
1093 	if (((i8042_pnp_data_reg & ~0xf) == (i8042_data_reg & ~0xf) &&
1094 	      i8042_pnp_data_reg != i8042_data_reg) ||
1095 	    !i8042_pnp_data_reg) {
1096 		pr_warn("PNP: PS/2 controller has invalid data port %#x; using default %#x\n",
1097 			i8042_pnp_data_reg, i8042_data_reg);
1098 		i8042_pnp_data_reg = i8042_data_reg;
1099 		pnp_data_busted = true;
1100 	}
1101 
1102 	if (((i8042_pnp_command_reg & ~0xf) == (i8042_command_reg & ~0xf) &&
1103 	      i8042_pnp_command_reg != i8042_command_reg) ||
1104 	    !i8042_pnp_command_reg) {
1105 		pr_warn("PNP: PS/2 controller has invalid command port %#x; using default %#x\n",
1106 			i8042_pnp_command_reg, i8042_command_reg);
1107 		i8042_pnp_command_reg = i8042_command_reg;
1108 		pnp_data_busted = true;
1109 	}
1110 
1111 	if (!i8042_nokbd && !i8042_pnp_kbd_irq) {
1112 		pr_warn("PNP: PS/2 controller doesn't have KBD irq; using default %d\n",
1113 			i8042_kbd_irq);
1114 		i8042_pnp_kbd_irq = i8042_kbd_irq;
1115 		pnp_data_busted = true;
1116 	}
1117 
1118 	if (!i8042_noaux && !i8042_pnp_aux_irq) {
1119 		if (!pnp_data_busted && i8042_pnp_kbd_irq) {
1120 			pr_warn("PNP: PS/2 appears to have AUX port disabled, "
1121 				"if this is incorrect please boot with i8042.nopnp\n");
1122 			i8042_noaux = true;
1123 		} else {
1124 			pr_warn("PNP: PS/2 controller doesn't have AUX irq; using default %d\n",
1125 				i8042_aux_irq);
1126 			i8042_pnp_aux_irq = i8042_aux_irq;
1127 		}
1128 	}
1129 
1130 	i8042_data_reg = i8042_pnp_data_reg;
1131 	i8042_command_reg = i8042_pnp_command_reg;
1132 	i8042_kbd_irq = i8042_pnp_kbd_irq;
1133 	i8042_aux_irq = i8042_pnp_aux_irq;
1134 
1135 #ifdef CONFIG_X86
1136 	i8042_bypass_aux_irq_test = !pnp_data_busted &&
1137 				    dmi_check_system(i8042_dmi_laptop_table);
1138 #endif
1139 
1140 	return 0;
1141 }
1142 
1143 #else  /* !CONFIG_PNP */
i8042_pnp_init(void)1144 static inline int i8042_pnp_init(void) { return 0; }
i8042_pnp_exit(void)1145 static inline void i8042_pnp_exit(void) { }
1146 #endif /* CONFIG_PNP */
1147 
i8042_platform_init(void)1148 static int __init i8042_platform_init(void)
1149 {
1150 	int retval;
1151 
1152 #ifdef CONFIG_X86
1153 	u8 a20_on = 0xdf;
1154 	/* Just return if platform does not have i8042 controller */
1155 	if (x86_platform.legacy.i8042 == X86_LEGACY_I8042_PLATFORM_ABSENT)
1156 		return -ENODEV;
1157 #endif
1158 
1159 /*
1160  * On ix86 platforms touching the i8042 data register region can do really
1161  * bad things. Because of this the region is always reserved on ix86 boxes.
1162  *
1163  *	if (!request_region(I8042_DATA_REG, 16, "i8042"))
1164  *		return -EBUSY;
1165  */
1166 
1167 	i8042_kbd_irq = I8042_MAP_IRQ(1);
1168 	i8042_aux_irq = I8042_MAP_IRQ(12);
1169 
1170 	retval = i8042_pnp_init();
1171 	if (retval)
1172 		return retval;
1173 
1174 #if defined(__ia64__)
1175         i8042_reset = I8042_RESET_ALWAYS;
1176 #endif
1177 
1178 #ifdef CONFIG_X86
1179 	/* Honor module parameter when value is not default */
1180 	if (i8042_reset == I8042_RESET_DEFAULT) {
1181 		if (dmi_check_system(i8042_dmi_reset_table))
1182 			i8042_reset = I8042_RESET_ALWAYS;
1183 
1184 		if (dmi_check_system(i8042_dmi_noselftest_table))
1185 			i8042_reset = I8042_RESET_NEVER;
1186 	}
1187 
1188 	if (dmi_check_system(i8042_dmi_noloop_table))
1189 		i8042_noloop = true;
1190 
1191 	if (dmi_check_system(i8042_dmi_nomux_table))
1192 		i8042_nomux = true;
1193 
1194 	if (dmi_check_system(i8042_dmi_forcemux_table))
1195 		i8042_nomux = false;
1196 
1197 	if (dmi_check_system(i8042_dmi_notimeout_table))
1198 		i8042_notimeout = true;
1199 
1200 	if (dmi_check_system(i8042_dmi_dritek_table))
1201 		i8042_dritek = true;
1202 
1203 	if (dmi_check_system(i8042_dmi_kbdreset_table))
1204 		i8042_kbdreset = true;
1205 
1206 	/*
1207 	 * A20 was already enabled during early kernel init. But some buggy
1208 	 * BIOSes (in MSI Laptops) require A20 to be enabled using 8042 to
1209 	 * resume from S3. So we do it here and hope that nothing breaks.
1210 	 */
1211 	i8042_command(&a20_on, 0x10d1);
1212 	i8042_command(NULL, 0x00ff);	/* Null command for SMM firmware */
1213 #endif /* CONFIG_X86 */
1214 
1215 	return retval;
1216 }
1217 
i8042_platform_exit(void)1218 static inline void i8042_platform_exit(void)
1219 {
1220 	i8042_pnp_exit();
1221 }
1222 
1223 #endif /* _I8042_X86IA64IO_H */
1224