xref: /openbmc/linux/drivers/input/keyboard/atkbd.c (revision 8c61e3be)
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3  * AT and PS/2 keyboard driver
4  *
5  * Copyright (c) 1999-2002 Vojtech Pavlik
6  */
7 
8 
9 /*
10  * This driver can handle standard AT keyboards and PS/2 keyboards in
11  * Translated and Raw Set 2 and Set 3, as well as AT keyboards on dumb
12  * input-only controllers and AT keyboards connected over a one way RS232
13  * converter.
14  */
15 
16 #include <linux/delay.h>
17 #include <linux/module.h>
18 #include <linux/slab.h>
19 #include <linux/interrupt.h>
20 #include <linux/init.h>
21 #include <linux/input.h>
22 #include <linux/input/vivaldi-fmap.h>
23 #include <linux/serio.h>
24 #include <linux/workqueue.h>
25 #include <linux/libps2.h>
26 #include <linux/mutex.h>
27 #include <linux/dmi.h>
28 #include <linux/property.h>
29 
30 #define DRIVER_DESC	"AT and PS/2 keyboard driver"
31 
32 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
33 MODULE_DESCRIPTION(DRIVER_DESC);
34 MODULE_LICENSE("GPL");
35 
36 static int atkbd_set = 2;
37 module_param_named(set, atkbd_set, int, 0);
38 MODULE_PARM_DESC(set, "Select keyboard code set (2 = default, 3 = PS/2 native)");
39 
40 #if defined(__i386__) || defined(__x86_64__) || defined(__hppa__)
41 static bool atkbd_reset;
42 #else
43 static bool atkbd_reset = true;
44 #endif
45 module_param_named(reset, atkbd_reset, bool, 0);
46 MODULE_PARM_DESC(reset, "Reset keyboard during initialization");
47 
48 static bool atkbd_softrepeat;
49 module_param_named(softrepeat, atkbd_softrepeat, bool, 0);
50 MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat");
51 
52 static bool atkbd_softraw = true;
53 module_param_named(softraw, atkbd_softraw, bool, 0);
54 MODULE_PARM_DESC(softraw, "Use software generated rawmode");
55 
56 static bool atkbd_scroll;
57 module_param_named(scroll, atkbd_scroll, bool, 0);
58 MODULE_PARM_DESC(scroll, "Enable scroll-wheel on MS Office and similar keyboards");
59 
60 static bool atkbd_extra;
61 module_param_named(extra, atkbd_extra, bool, 0);
62 MODULE_PARM_DESC(extra, "Enable extra LEDs and keys on IBM RapidAcces, EzKey and similar keyboards");
63 
64 static bool atkbd_terminal;
65 module_param_named(terminal, atkbd_terminal, bool, 0);
66 MODULE_PARM_DESC(terminal, "Enable break codes on an IBM Terminal keyboard connected via AT/PS2");
67 
68 #define SCANCODE(keymap)	((keymap >> 16) & 0xFFFF)
69 #define KEYCODE(keymap)		(keymap & 0xFFFF)
70 
71 /*
72  * Scancode to keycode tables. These are just the default setting, and
73  * are loadable via a userland utility.
74  */
75 
76 #define ATKBD_KEYMAP_SIZE	512
77 
78 static const unsigned short atkbd_set2_keycode[ATKBD_KEYMAP_SIZE] = {
79 
80 #ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES
81 
82 /* XXX: need a more general approach */
83 
84 #include "hpps2atkbd.h"	/* include the keyboard scancodes */
85 
86 #else
87 	  0, 67, 65, 63, 61, 59, 60, 88,  0, 68, 66, 64, 62, 15, 41,117,
88 	  0, 56, 42, 93, 29, 16,  2,  0,  0,  0, 44, 31, 30, 17,  3,  0,
89 	  0, 46, 45, 32, 18,  5,  4, 95,  0, 57, 47, 33, 20, 19,  6,183,
90 	  0, 49, 48, 35, 34, 21,  7,184,  0,  0, 50, 36, 22,  8,  9,185,
91 	  0, 51, 37, 23, 24, 11, 10,  0,  0, 52, 53, 38, 39, 25, 12,  0,
92 	  0, 89, 40,  0, 26, 13,  0,  0, 58, 54, 28, 27,  0, 43,  0, 85,
93 	  0, 86, 91, 90, 92,  0, 14, 94,  0, 79,124, 75, 71,121,  0,  0,
94 	 82, 83, 80, 76, 77, 72,  1, 69, 87, 78, 81, 74, 55, 73, 70, 99,
95 
96 	  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,  0,
97 	217,100,255,  0, 97,165,  0,  0,156,  0,  0,  0,  0,  0,  0,125,
98 	173,114,  0,113,  0,  0,  0,126,128,  0,  0,140,  0,  0,  0,127,
99 	159,  0,115,  0,164,  0,  0,116,158,  0,172,166,  0,  0,  0,142,
100 	157,  0,  0,  0,  0,  0,  0,  0,155,  0, 98,  0,  0,163,  0,  0,
101 	226,  0,  0,  0,  0,  0,  0,  0,  0,255, 96,  0,  0,  0,143,  0,
102 	  0,  0,  0,  0,  0,  0,  0,  0,  0,107,  0,105,102,  0,  0,112,
103 	110,111,108,112,106,103,  0,119,  0,118,109,  0, 99,104,119,  0,
104 
105 	  0,  0,  0, 65, 99,
106 #endif
107 };
108 
109 static const unsigned short atkbd_set3_keycode[ATKBD_KEYMAP_SIZE] = {
110 
111 	  0,  0,  0,  0,  0,  0,  0, 59,  1,138,128,129,130, 15, 41, 60,
112 	131, 29, 42, 86, 58, 16,  2, 61,133, 56, 44, 31, 30, 17,  3, 62,
113 	134, 46, 45, 32, 18,  5,  4, 63,135, 57, 47, 33, 20, 19,  6, 64,
114 	136, 49, 48, 35, 34, 21,  7, 65,137,100, 50, 36, 22,  8,  9, 66,
115 	125, 51, 37, 23, 24, 11, 10, 67,126, 52, 53, 38, 39, 25, 12, 68,
116 	113,114, 40, 43, 26, 13, 87, 99, 97, 54, 28, 27, 43, 43, 88, 70,
117 	108,105,119,103,111,107, 14,110,  0, 79,106, 75, 71,109,102,104,
118 	 82, 83, 80, 76, 77, 72, 69, 98,  0, 96, 81,  0, 78, 73, 55,183,
119 
120 	184,185,186,187, 74, 94, 92, 93,  0,  0,  0,125,126,127,112,  0,
121 	  0,139,172,163,165,115,152,172,166,140,160,154,113,114,167,168,
122 	148,149,147,140
123 };
124 
125 static const unsigned short atkbd_unxlate_table[128] = {
126           0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13,
127          21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27,
128          35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42,
129          50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88,  5,  6,  4, 12,  3,
130          11,  2, 10,  1,  9,119,126,108,117,125,123,107,115,116,121,105,
131         114,122,112,113,127, 96, 97,120,  7, 15, 23, 31, 39, 47, 55, 63,
132          71, 79, 86, 94,  8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111,
133          19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110
134 };
135 
136 #define ATKBD_CMD_SETLEDS	0x10ed
137 #define ATKBD_CMD_GSCANSET	0x11f0
138 #define ATKBD_CMD_SSCANSET	0x10f0
139 #define ATKBD_CMD_GETID		0x02f2
140 #define ATKBD_CMD_SETREP	0x10f3
141 #define ATKBD_CMD_ENABLE	0x00f4
142 #define ATKBD_CMD_RESET_DIS	0x00f5	/* Reset to defaults and disable */
143 #define ATKBD_CMD_RESET_DEF	0x00f6	/* Reset to defaults */
144 #define ATKBD_CMD_SETALL_MB	0x00f8	/* Set all keys to give break codes */
145 #define ATKBD_CMD_SETALL_MBR	0x00fa  /* ... and repeat */
146 #define ATKBD_CMD_RESET_BAT	0x02ff
147 #define ATKBD_CMD_RESEND	0x00fe
148 #define ATKBD_CMD_EX_ENABLE	0x10ea
149 #define ATKBD_CMD_EX_SETLEDS	0x20eb
150 #define ATKBD_CMD_OK_GETID	0x02e8
151 
152 #define ATKBD_RET_ACK		0xfa
153 #define ATKBD_RET_NAK		0xfe
154 #define ATKBD_RET_BAT		0xaa
155 #define ATKBD_RET_EMUL0		0xe0
156 #define ATKBD_RET_EMUL1		0xe1
157 #define ATKBD_RET_RELEASE	0xf0
158 #define ATKBD_RET_HANJA		0xf1
159 #define ATKBD_RET_HANGEUL	0xf2
160 #define ATKBD_RET_ERR		0xff
161 
162 #define ATKBD_KEY_UNKNOWN	0
163 #define ATKBD_KEY_NULL		255
164 
165 #define ATKBD_SCR_1		0xfffe
166 #define ATKBD_SCR_2		0xfffd
167 #define ATKBD_SCR_4		0xfffc
168 #define ATKBD_SCR_8		0xfffb
169 #define ATKBD_SCR_CLICK		0xfffa
170 #define ATKBD_SCR_LEFT		0xfff9
171 #define ATKBD_SCR_RIGHT		0xfff8
172 
173 #define ATKBD_SPECIAL		ATKBD_SCR_RIGHT
174 
175 #define ATKBD_LED_EVENT_BIT	0
176 #define ATKBD_REP_EVENT_BIT	1
177 
178 #define ATKBD_XL_ERR		0x01
179 #define ATKBD_XL_BAT		0x02
180 #define ATKBD_XL_ACK		0x04
181 #define ATKBD_XL_NAK		0x08
182 #define ATKBD_XL_HANGEUL	0x10
183 #define ATKBD_XL_HANJA		0x20
184 
185 static const struct {
186 	unsigned short keycode;
187 	unsigned char set2;
188 } atkbd_scroll_keys[] = {
189 	{ ATKBD_SCR_1,     0xc5 },
190 	{ ATKBD_SCR_2,     0x9d },
191 	{ ATKBD_SCR_4,     0xa4 },
192 	{ ATKBD_SCR_8,     0x9b },
193 	{ ATKBD_SCR_CLICK, 0xe0 },
194 	{ ATKBD_SCR_LEFT,  0xcb },
195 	{ ATKBD_SCR_RIGHT, 0xd2 },
196 };
197 
198 /*
199  * The atkbd control structure
200  */
201 
202 struct atkbd {
203 
204 	struct ps2dev ps2dev;
205 	struct input_dev *dev;
206 
207 	/* Written only during init */
208 	char name[64];
209 	char phys[32];
210 
211 	unsigned short id;
212 	unsigned short keycode[ATKBD_KEYMAP_SIZE];
213 	DECLARE_BITMAP(force_release_mask, ATKBD_KEYMAP_SIZE);
214 	unsigned char set;
215 	bool translated;
216 	bool extra;
217 	bool write;
218 	bool softrepeat;
219 	bool softraw;
220 	bool scroll;
221 	bool enabled;
222 
223 	/* Accessed only from interrupt */
224 	unsigned char emul;
225 	bool resend;
226 	bool release;
227 	unsigned long xl_bit;
228 	unsigned int last;
229 	unsigned long time;
230 	unsigned long err_count;
231 
232 	struct delayed_work event_work;
233 	unsigned long event_jiffies;
234 	unsigned long event_mask;
235 
236 	/* Serializes reconnect(), attr->set() and event work */
237 	struct mutex mutex;
238 
239 	struct vivaldi_data vdata;
240 };
241 
242 /*
243  * System-specific keymap fixup routine
244  */
245 static void (*atkbd_platform_fixup)(struct atkbd *, const void *data);
246 static void *atkbd_platform_fixup_data;
247 static unsigned int (*atkbd_platform_scancode_fixup)(struct atkbd *, unsigned int);
248 
249 /*
250  * Certain keyboards to not like ATKBD_CMD_RESET_DIS and stop responding
251  * to many commands until full reset (ATKBD_CMD_RESET_BAT) is performed.
252  */
253 static bool atkbd_skip_deactivate;
254 
255 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
256 				ssize_t (*handler)(struct atkbd *, char *));
257 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
258 				ssize_t (*handler)(struct atkbd *, const char *, size_t));
259 #define ATKBD_DEFINE_ATTR(_name)						\
260 static ssize_t atkbd_show_##_name(struct atkbd *, char *);			\
261 static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t);		\
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 ssize_t atkbd_do_set_##_name(struct device *d,				\
268 			struct device_attribute *attr, const char *b, size_t s)	\
269 {										\
270 	return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name);		\
271 }										\
272 static struct device_attribute atkbd_attr_##_name =				\
273 	__ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name);
274 
275 ATKBD_DEFINE_ATTR(extra);
276 ATKBD_DEFINE_ATTR(force_release);
277 ATKBD_DEFINE_ATTR(scroll);
278 ATKBD_DEFINE_ATTR(set);
279 ATKBD_DEFINE_ATTR(softrepeat);
280 ATKBD_DEFINE_ATTR(softraw);
281 
282 #define ATKBD_DEFINE_RO_ATTR(_name)						\
283 static ssize_t atkbd_show_##_name(struct atkbd *, char *);			\
284 static ssize_t atkbd_do_show_##_name(struct device *d,				\
285 				struct device_attribute *attr, char *b)		\
286 {										\
287 	return atkbd_attr_show_helper(d, b, atkbd_show_##_name);		\
288 }										\
289 static struct device_attribute atkbd_attr_##_name =				\
290 	__ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL);
291 
292 ATKBD_DEFINE_RO_ATTR(err_count);
293 ATKBD_DEFINE_RO_ATTR(function_row_physmap);
294 
295 static struct attribute *atkbd_attributes[] = {
296 	&atkbd_attr_extra.attr,
297 	&atkbd_attr_force_release.attr,
298 	&atkbd_attr_scroll.attr,
299 	&atkbd_attr_set.attr,
300 	&atkbd_attr_softrepeat.attr,
301 	&atkbd_attr_softraw.attr,
302 	&atkbd_attr_err_count.attr,
303 	&atkbd_attr_function_row_physmap.attr,
304 	NULL
305 };
306 
307 static ssize_t atkbd_show_function_row_physmap(struct atkbd *atkbd, char *buf)
308 {
309 	return vivaldi_function_row_physmap_show(&atkbd->vdata, buf);
310 }
311 
312 static struct atkbd *atkbd_from_serio(struct serio *serio)
313 {
314 	struct ps2dev *ps2dev = serio_get_drvdata(serio);
315 
316 	return container_of(ps2dev, struct atkbd, ps2dev);
317 }
318 
319 static umode_t atkbd_attr_is_visible(struct kobject *kobj,
320 				struct attribute *attr, int i)
321 {
322 	struct device *dev = kobj_to_dev(kobj);
323 	struct serio *serio = to_serio_port(dev);
324 	struct atkbd *atkbd = atkbd_from_serio(serio);
325 
326 	if (attr == &atkbd_attr_function_row_physmap.attr &&
327 	    !atkbd->vdata.num_function_row_keys)
328 		return 0;
329 
330 	return attr->mode;
331 }
332 
333 static const struct attribute_group atkbd_attribute_group = {
334 	.attrs	= atkbd_attributes,
335 	.is_visible = atkbd_attr_is_visible,
336 };
337 
338 __ATTRIBUTE_GROUPS(atkbd_attribute);
339 
340 static const unsigned int xl_table[] = {
341 	ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK,
342 	ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL,
343 };
344 
345 /*
346  * Checks if we should mangle the scancode to extract 'release' bit
347  * in translated mode.
348  */
349 static bool atkbd_need_xlate(unsigned long xl_bit, unsigned char code)
350 {
351 	int i;
352 
353 	if (code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1)
354 		return false;
355 
356 	for (i = 0; i < ARRAY_SIZE(xl_table); i++)
357 		if (code == xl_table[i])
358 			return test_bit(i, &xl_bit);
359 
360 	return true;
361 }
362 
363 /*
364  * Calculates new value of xl_bit so the driver can distinguish
365  * between make/break pair of scancodes for select keys and PS/2
366  * protocol responses.
367  */
368 static void atkbd_calculate_xl_bit(struct atkbd *atkbd, unsigned char code)
369 {
370 	int i;
371 
372 	for (i = 0; i < ARRAY_SIZE(xl_table); i++) {
373 		if (!((code ^ xl_table[i]) & 0x7f)) {
374 			if (code & 0x80)
375 				__clear_bit(i, &atkbd->xl_bit);
376 			else
377 				__set_bit(i, &atkbd->xl_bit);
378 			break;
379 		}
380 	}
381 }
382 
383 /*
384  * Encode the scancode, 0xe0 prefix, and high bit into a single integer,
385  * keeping kernel 2.4 compatibility for set 2
386  */
387 static unsigned int atkbd_compat_scancode(struct atkbd *atkbd, unsigned int code)
388 {
389 	if (atkbd->set == 3) {
390 		if (atkbd->emul == 1)
391 			code |= 0x100;
392         } else {
393 		code = (code & 0x7f) | ((code & 0x80) << 1);
394 		if (atkbd->emul == 1)
395 			code |= 0x80;
396 	}
397 
398 	return code;
399 }
400 
401 /*
402  * Tries to handle frame or parity error by requesting the keyboard controller
403  * to resend the last byte. This historically not done on x86 as controllers
404  * there typically do not implement this command.
405  */
406 static bool __maybe_unused atkbd_handle_frame_error(struct ps2dev *ps2dev,
407 						    u8 data, unsigned int flags)
408 {
409 	struct atkbd *atkbd = container_of(ps2dev, struct atkbd, ps2dev);
410 	struct serio *serio = ps2dev->serio;
411 
412 	if ((flags & (SERIO_FRAME | SERIO_PARITY)) &&
413 	    (~flags & SERIO_TIMEOUT) &&
414 	    !atkbd->resend && atkbd->write) {
415 		dev_warn(&serio->dev, "Frame/parity error: %02x\n", flags);
416 		serio_write(serio, ATKBD_CMD_RESEND);
417 		atkbd->resend = true;
418 		return true;
419 	}
420 
421 	if (!flags && data == ATKBD_RET_ACK)
422 		atkbd->resend = false;
423 
424 	return false;
425 }
426 
427 static enum ps2_disposition atkbd_pre_receive_byte(struct ps2dev *ps2dev,
428 						   u8 data, unsigned int flags)
429 {
430 	struct serio *serio = ps2dev->serio;
431 
432 	dev_dbg(&serio->dev, "Received %02x flags %02x\n", data, flags);
433 
434 #if !defined(__i386__) && !defined (__x86_64__)
435 	if (atkbd_handle_frame_error(ps2dev, data, flags))
436 		return PS2_IGNORE;
437 #endif
438 
439 	return PS2_PROCESS;
440 }
441 
442 static void atkbd_receive_byte(struct ps2dev *ps2dev, u8 data)
443 {
444 	struct serio *serio = ps2dev->serio;
445 	struct atkbd *atkbd = container_of(ps2dev, struct atkbd, ps2dev);
446 	struct input_dev *dev = atkbd->dev;
447 	unsigned int code = data;
448 	int scroll = 0, hscroll = 0, click = -1;
449 	int value;
450 	unsigned short keycode;
451 
452 	pm_wakeup_event(&serio->dev, 0);
453 
454 	if (!atkbd->enabled)
455 		return;
456 
457 	input_event(dev, EV_MSC, MSC_RAW, code);
458 
459 	if (atkbd_platform_scancode_fixup)
460 		code = atkbd_platform_scancode_fixup(atkbd, code);
461 
462 	if (atkbd->translated) {
463 
464 		if (atkbd->emul || atkbd_need_xlate(atkbd->xl_bit, code)) {
465 			atkbd->release = code >> 7;
466 			code &= 0x7f;
467 		}
468 
469 		if (!atkbd->emul)
470 			atkbd_calculate_xl_bit(atkbd, data);
471 	}
472 
473 	switch (code) {
474 	case ATKBD_RET_BAT:
475 		atkbd->enabled = false;
476 		serio_reconnect(atkbd->ps2dev.serio);
477 		return;
478 	case ATKBD_RET_EMUL0:
479 		atkbd->emul = 1;
480 		return;
481 	case ATKBD_RET_EMUL1:
482 		atkbd->emul = 2;
483 		return;
484 	case ATKBD_RET_RELEASE:
485 		atkbd->release = true;
486 		return;
487 	case ATKBD_RET_ACK:
488 	case ATKBD_RET_NAK:
489 		if (printk_ratelimit())
490 			dev_warn(&serio->dev,
491 				 "Spurious %s on %s. "
492 				 "Some program might be trying to access hardware directly.\n",
493 				 data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys);
494 		return;
495 	case ATKBD_RET_ERR:
496 		atkbd->err_count++;
497 		dev_dbg(&serio->dev, "Keyboard on %s reports too many keys pressed.\n",
498 			serio->phys);
499 		return;
500 	}
501 
502 	code = atkbd_compat_scancode(atkbd, code);
503 
504 	if (atkbd->emul && --atkbd->emul)
505 		return;
506 
507 	keycode = atkbd->keycode[code];
508 
509 	if (!(atkbd->release && test_bit(code, atkbd->force_release_mask)))
510 		if (keycode != ATKBD_KEY_NULL)
511 			input_event(dev, EV_MSC, MSC_SCAN, code);
512 
513 	switch (keycode) {
514 	case ATKBD_KEY_NULL:
515 		break;
516 	case ATKBD_KEY_UNKNOWN:
517 		dev_warn(&serio->dev,
518 			 "Unknown key %s (%s set %d, code %#x on %s).\n",
519 			 atkbd->release ? "released" : "pressed",
520 			 atkbd->translated ? "translated" : "raw",
521 			 atkbd->set, code, serio->phys);
522 		dev_warn(&serio->dev,
523 			 "Use 'setkeycodes %s%02x <keycode>' to make it known.\n",
524 			 code & 0x80 ? "e0" : "", code & 0x7f);
525 		input_sync(dev);
526 		break;
527 	case ATKBD_SCR_1:
528 		scroll = 1;
529 		break;
530 	case ATKBD_SCR_2:
531 		scroll = 2;
532 		break;
533 	case ATKBD_SCR_4:
534 		scroll = 4;
535 		break;
536 	case ATKBD_SCR_8:
537 		scroll = 8;
538 		break;
539 	case ATKBD_SCR_CLICK:
540 		click = !atkbd->release;
541 		break;
542 	case ATKBD_SCR_LEFT:
543 		hscroll = -1;
544 		break;
545 	case ATKBD_SCR_RIGHT:
546 		hscroll = 1;
547 		break;
548 	default:
549 		if (atkbd->release) {
550 			value = 0;
551 			atkbd->last = 0;
552 		} else if (!atkbd->softrepeat && test_bit(keycode, dev->key)) {
553 			/* Workaround Toshiba laptop multiple keypress */
554 			value = time_before(jiffies, atkbd->time) && atkbd->last == code ? 1 : 2;
555 		} else {
556 			value = 1;
557 			atkbd->last = code;
558 			atkbd->time = jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]) / 2;
559 		}
560 
561 		input_event(dev, EV_KEY, keycode, value);
562 		input_sync(dev);
563 
564 		if (value && test_bit(code, atkbd->force_release_mask)) {
565 			input_event(dev, EV_MSC, MSC_SCAN, code);
566 			input_report_key(dev, keycode, 0);
567 			input_sync(dev);
568 		}
569 	}
570 
571 	if (atkbd->scroll) {
572 		if (click != -1)
573 			input_report_key(dev, BTN_MIDDLE, click);
574 		input_report_rel(dev, REL_WHEEL,
575 				 atkbd->release ? -scroll : scroll);
576 		input_report_rel(dev, REL_HWHEEL, hscroll);
577 		input_sync(dev);
578 	}
579 
580 	atkbd->release = false;
581 }
582 
583 static int atkbd_set_repeat_rate(struct atkbd *atkbd)
584 {
585 	const short period[32] =
586 		{ 33,  37,  42,  46,  50,  54,  58,  63,  67,  75,  83,  92, 100, 109, 116, 125,
587 		 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 };
588 	const short delay[4] =
589 		{ 250, 500, 750, 1000 };
590 
591 	struct input_dev *dev = atkbd->dev;
592 	unsigned char param;
593 	int i = 0, j = 0;
594 
595 	while (i < ARRAY_SIZE(period) - 1 && period[i] < dev->rep[REP_PERIOD])
596 		i++;
597 	dev->rep[REP_PERIOD] = period[i];
598 
599 	while (j < ARRAY_SIZE(delay) - 1 && delay[j] < dev->rep[REP_DELAY])
600 		j++;
601 	dev->rep[REP_DELAY] = delay[j];
602 
603 	param = i | (j << 5);
604 	return ps2_command(&atkbd->ps2dev, &param, ATKBD_CMD_SETREP);
605 }
606 
607 static int atkbd_set_leds(struct atkbd *atkbd)
608 {
609 	struct input_dev *dev = atkbd->dev;
610 	unsigned char param[2];
611 
612 	param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0)
613 		 | (test_bit(LED_NUML,    dev->led) ? 2 : 0)
614 		 | (test_bit(LED_CAPSL,   dev->led) ? 4 : 0);
615 	if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS))
616 		return -1;
617 
618 	if (atkbd->extra) {
619 		param[0] = 0;
620 		param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0)
621 			 | (test_bit(LED_SLEEP,   dev->led) ? 0x02 : 0)
622 			 | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0)
623 			 | (test_bit(LED_MISC,    dev->led) ? 0x10 : 0)
624 			 | (test_bit(LED_MUTE,    dev->led) ? 0x20 : 0);
625 		if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS))
626 			return -1;
627 	}
628 
629 	return 0;
630 }
631 
632 /*
633  * atkbd_event_work() is used to complete processing of events that
634  * can not be processed by input_event() which is often called from
635  * interrupt context.
636  */
637 
638 static void atkbd_event_work(struct work_struct *work)
639 {
640 	struct atkbd *atkbd = container_of(work, struct atkbd, event_work.work);
641 
642 	mutex_lock(&atkbd->mutex);
643 
644 	if (!atkbd->enabled) {
645 		/*
646 		 * Serio ports are resumed asynchronously so while driver core
647 		 * thinks that device is already fully operational in reality
648 		 * it may not be ready yet. In this case we need to keep
649 		 * rescheduling till reconnect completes.
650 		 */
651 		schedule_delayed_work(&atkbd->event_work,
652 					msecs_to_jiffies(100));
653 	} else {
654 		if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask))
655 			atkbd_set_leds(atkbd);
656 
657 		if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask))
658 			atkbd_set_repeat_rate(atkbd);
659 	}
660 
661 	mutex_unlock(&atkbd->mutex);
662 }
663 
664 /*
665  * Schedule switch for execution. We need to throttle requests,
666  * otherwise keyboard may become unresponsive.
667  */
668 static void atkbd_schedule_event_work(struct atkbd *atkbd, int event_bit)
669 {
670 	unsigned long delay = msecs_to_jiffies(50);
671 
672 	if (time_after(jiffies, atkbd->event_jiffies + delay))
673 		delay = 0;
674 
675 	atkbd->event_jiffies = jiffies;
676 	set_bit(event_bit, &atkbd->event_mask);
677 	mb();
678 	schedule_delayed_work(&atkbd->event_work, delay);
679 }
680 
681 /*
682  * Event callback from the input module. Events that change the state of
683  * the hardware are processed here. If action can not be performed in
684  * interrupt context it is offloaded to atkbd_event_work.
685  */
686 
687 static int atkbd_event(struct input_dev *dev,
688 			unsigned int type, unsigned int code, int value)
689 {
690 	struct atkbd *atkbd = input_get_drvdata(dev);
691 
692 	if (!atkbd->write)
693 		return -1;
694 
695 	switch (type) {
696 
697 	case EV_LED:
698 		atkbd_schedule_event_work(atkbd, ATKBD_LED_EVENT_BIT);
699 		return 0;
700 
701 	case EV_REP:
702 		if (!atkbd->softrepeat)
703 			atkbd_schedule_event_work(atkbd, ATKBD_REP_EVENT_BIT);
704 		return 0;
705 
706 	default:
707 		return -1;
708 	}
709 }
710 
711 /*
712  * atkbd_enable() signals that interrupt handler is allowed to
713  * generate input events.
714  */
715 
716 static inline void atkbd_enable(struct atkbd *atkbd)
717 {
718 	serio_pause_rx(atkbd->ps2dev.serio);
719 	atkbd->enabled = true;
720 	serio_continue_rx(atkbd->ps2dev.serio);
721 }
722 
723 /*
724  * atkbd_disable() tells input handler that all incoming data except
725  * for ACKs and command response should be dropped.
726  */
727 
728 static inline void atkbd_disable(struct atkbd *atkbd)
729 {
730 	serio_pause_rx(atkbd->ps2dev.serio);
731 	atkbd->enabled = false;
732 	serio_continue_rx(atkbd->ps2dev.serio);
733 }
734 
735 static int atkbd_activate(struct atkbd *atkbd)
736 {
737 	struct ps2dev *ps2dev = &atkbd->ps2dev;
738 
739 /*
740  * Enable the keyboard to receive keystrokes.
741  */
742 
743 	if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) {
744 		dev_err(&ps2dev->serio->dev,
745 			"Failed to enable keyboard on %s\n",
746 			ps2dev->serio->phys);
747 		return -1;
748 	}
749 
750 	return 0;
751 }
752 
753 /*
754  * atkbd_deactivate() resets and disables the keyboard from sending
755  * keystrokes.
756  */
757 
758 static void atkbd_deactivate(struct atkbd *atkbd)
759 {
760 	struct ps2dev *ps2dev = &atkbd->ps2dev;
761 
762 	if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_DIS))
763 		dev_err(&ps2dev->serio->dev,
764 			"Failed to deactivate keyboard on %s\n",
765 			ps2dev->serio->phys);
766 }
767 
768 #ifdef CONFIG_X86
769 static bool atkbd_is_portable_device(void)
770 {
771 	static const char * const chassis_types[] = {
772 		"8",	/* Portable */
773 		"9",	/* Laptop */
774 		"10",	/* Notebook */
775 		"14",	/* Sub-Notebook */
776 		"31",	/* Convertible */
777 		"32",	/* Detachable */
778 	};
779 	int i;
780 
781 	for (i = 0; i < ARRAY_SIZE(chassis_types); i++)
782 		if (dmi_match(DMI_CHASSIS_TYPE, chassis_types[i]))
783 			return true;
784 
785 	return false;
786 }
787 
788 /*
789  * On many modern laptops ATKBD_CMD_GETID may cause problems, on these laptops
790  * the controller is always in translated mode. In this mode mice/touchpads will
791  * not work. So in this case simply assume a keyboard is connected to avoid
792  * confusing some laptop keyboards.
793  *
794  * Skipping ATKBD_CMD_GETID ends up using a fake keyboard id. Using the standard
795  * 0xab83 id is ok in translated mode, only atkbd_select_set() checks atkbd->id
796  * and in translated mode that is a no-op.
797  */
798 static bool atkbd_skip_getid(struct atkbd *atkbd)
799 {
800 	return atkbd->translated && atkbd_is_portable_device();
801 }
802 #else
803 static inline bool atkbd_skip_getid(struct atkbd *atkbd) { return false; }
804 #endif
805 
806 /*
807  * atkbd_probe() probes for an AT keyboard on a serio port.
808  */
809 
810 static int atkbd_probe(struct atkbd *atkbd)
811 {
812 	struct ps2dev *ps2dev = &atkbd->ps2dev;
813 	unsigned char param[2];
814 
815 /*
816  * Some systems, where the bit-twiddling when testing the io-lines of the
817  * controller may confuse the keyboard need a full reset of the keyboard. On
818  * these systems the BIOS also usually doesn't do it for us.
819  */
820 
821 	if (atkbd_reset)
822 		if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT))
823 			dev_warn(&ps2dev->serio->dev,
824 				 "keyboard reset failed on %s\n",
825 				 ps2dev->serio->phys);
826 
827 	if (atkbd_skip_getid(atkbd)) {
828 		atkbd->id = 0xab83;
829 		return 0;
830 	}
831 
832 /*
833  * Then we check the keyboard ID. We should get 0xab83 under normal conditions.
834  * Some keyboards report different values, but the first byte is always 0xab or
835  * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this
836  * should make sure we don't try to set the LEDs on it.
837  */
838 
839 	param[0] = param[1] = 0xa5;	/* initialize with invalid values */
840 	if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) {
841 
842 /*
843  * If the get ID command failed, we check if we can at least set
844  * the LEDs on the keyboard. This should work on every keyboard out there.
845  * It also turns the LEDs off, which we want anyway.
846  */
847 		param[0] = 0;
848 		if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
849 			return -1;
850 		atkbd->id = 0xabba;
851 		return 0;
852 	}
853 
854 	if (!ps2_is_keyboard_id(param[0]))
855 		return -1;
856 
857 	atkbd->id = (param[0] << 8) | param[1];
858 
859 	if (atkbd->id == 0xaca1 && atkbd->translated) {
860 		dev_err(&ps2dev->serio->dev,
861 			"NCD terminal keyboards are only supported on non-translating controllers. "
862 			"Use i8042.direct=1 to disable translation.\n");
863 		return -1;
864 	}
865 
866 /*
867  * Make sure nothing is coming from the keyboard and disturbs our
868  * internal state.
869  */
870 	if (!atkbd_skip_deactivate)
871 		atkbd_deactivate(atkbd);
872 
873 	return 0;
874 }
875 
876 /*
877  * atkbd_select_set checks if a keyboard has a working Set 3 support, and
878  * sets it into that. Unfortunately there are keyboards that can be switched
879  * to Set 3, but don't work well in that (BTC Multimedia ...)
880  */
881 
882 static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra)
883 {
884 	struct ps2dev *ps2dev = &atkbd->ps2dev;
885 	unsigned char param[2];
886 
887 	atkbd->extra = false;
888 /*
889  * For known special keyboards we can go ahead and set the correct set.
890  * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and
891  * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards.
892  */
893 
894 	if (atkbd->translated)
895 		return 2;
896 
897 	if (atkbd->id == 0xaca1) {
898 		param[0] = 3;
899 		ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET);
900 		return 3;
901 	}
902 
903 	if (allow_extra) {
904 		param[0] = 0x71;
905 		if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) {
906 			atkbd->extra = true;
907 			return 2;
908 		}
909 	}
910 
911 	if (atkbd_terminal) {
912 		ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MB);
913 		return 3;
914 	}
915 
916 	if (target_set != 3)
917 		return 2;
918 
919 	if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) {
920 		atkbd->id = param[0] << 8 | param[1];
921 		return 2;
922 	}
923 
924 	param[0] = 3;
925 	if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
926 		return 2;
927 
928 	param[0] = 0;
929 	if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET))
930 		return 2;
931 
932 	if (param[0] != 3) {
933 		param[0] = 2;
934 		if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
935 			return 2;
936 	}
937 
938 	ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR);
939 
940 	return 3;
941 }
942 
943 static int atkbd_reset_state(struct atkbd *atkbd)
944 {
945         struct ps2dev *ps2dev = &atkbd->ps2dev;
946 	unsigned char param[1];
947 
948 /*
949  * Set the LEDs to a predefined state (all off).
950  */
951 
952 	param[0] = 0;
953 	if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
954 		return -1;
955 
956 /*
957  * Set autorepeat to fastest possible.
958  */
959 
960 	param[0] = 0;
961 	if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP))
962 		return -1;
963 
964 	return 0;
965 }
966 
967 /*
968  * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a
969  * reboot.
970  */
971 
972 static void atkbd_cleanup(struct serio *serio)
973 {
974 	struct atkbd *atkbd = atkbd_from_serio(serio);
975 
976 	atkbd_disable(atkbd);
977 	ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_DEF);
978 }
979 
980 
981 /*
982  * atkbd_disconnect() closes and frees.
983  */
984 
985 static void atkbd_disconnect(struct serio *serio)
986 {
987 	struct atkbd *atkbd = atkbd_from_serio(serio);
988 
989 	atkbd_disable(atkbd);
990 
991 	input_unregister_device(atkbd->dev);
992 
993 	/*
994 	 * Make sure we don't have a command in flight.
995 	 * Note that since atkbd->enabled is false event work will keep
996 	 * rescheduling itself until it gets canceled and will not try
997 	 * accessing freed input device or serio port.
998 	 */
999 	cancel_delayed_work_sync(&atkbd->event_work);
1000 
1001 	serio_close(serio);
1002 	serio_set_drvdata(serio, NULL);
1003 	kfree(atkbd);
1004 }
1005 
1006 /*
1007  * generate release events for the keycodes given in data
1008  */
1009 static void atkbd_apply_forced_release_keylist(struct atkbd* atkbd,
1010 						const void *data)
1011 {
1012 	const unsigned int *keys = data;
1013 	unsigned int i;
1014 
1015 	if (atkbd->set == 2)
1016 		for (i = 0; keys[i] != -1U; i++)
1017 			__set_bit(keys[i], atkbd->force_release_mask);
1018 }
1019 
1020 /*
1021  * Most special keys (Fn+F?) on Dell laptops do not generate release
1022  * events so we have to do it ourselves.
1023  */
1024 static unsigned int atkbd_dell_laptop_forced_release_keys[] = {
1025 	0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8f, 0x93, -1U
1026 };
1027 
1028 /*
1029  * Perform fixup for HP system that doesn't generate release
1030  * for its video switch
1031  */
1032 static unsigned int atkbd_hp_forced_release_keys[] = {
1033 	0x94, -1U
1034 };
1035 
1036 /*
1037  * Samsung NC10,NC20 with Fn+F? key release not working
1038  */
1039 static unsigned int atkbd_samsung_forced_release_keys[] = {
1040 	0x82, 0x83, 0x84, 0x86, 0x88, 0x89, 0xb3, 0xf7, 0xf9, -1U
1041 };
1042 
1043 /*
1044  * Amilo Pi 3525 key release for Fn+Volume keys not working
1045  */
1046 static unsigned int atkbd_amilo_pi3525_forced_release_keys[] = {
1047 	0x20, 0xa0, 0x2e, 0xae, 0x30, 0xb0, -1U
1048 };
1049 
1050 /*
1051  * Amilo Xi 3650 key release for light touch bar not working
1052  */
1053 static unsigned int atkbd_amilo_xi3650_forced_release_keys[] = {
1054 	0x67, 0xed, 0x90, 0xa2, 0x99, 0xa4, 0xae, 0xb0, -1U
1055 };
1056 
1057 /*
1058  * Soltech TA12 system with broken key release on volume keys and mute key
1059  */
1060 static unsigned int atkdb_soltech_ta12_forced_release_keys[] = {
1061 	0xa0, 0xae, 0xb0, -1U
1062 };
1063 
1064 /*
1065  * Many notebooks don't send key release event for volume up/down
1066  * keys, with key list below common among them
1067  */
1068 static unsigned int atkbd_volume_forced_release_keys[] = {
1069 	0xae, 0xb0, -1U
1070 };
1071 
1072 /*
1073  * OQO 01+ multimedia keys (64--66) generate e0 6x upon release whereas
1074  * they should be generating e4-e6 (0x80 | code).
1075  */
1076 static unsigned int atkbd_oqo_01plus_scancode_fixup(struct atkbd *atkbd,
1077 						    unsigned int code)
1078 {
1079 	if (atkbd->translated && atkbd->emul == 1 &&
1080 	    (code == 0x64 || code == 0x65 || code == 0x66)) {
1081 		atkbd->emul = 0;
1082 		code |= 0x80;
1083 	}
1084 
1085 	return code;
1086 }
1087 
1088 static int atkbd_get_keymap_from_fwnode(struct atkbd *atkbd)
1089 {
1090 	struct device *dev = &atkbd->ps2dev.serio->dev;
1091 	int i, n;
1092 	u32 *ptr;
1093 	u16 scancode, keycode;
1094 
1095 	/* Parse "linux,keymap" property */
1096 	n = device_property_count_u32(dev, "linux,keymap");
1097 	if (n <= 0 || n > ATKBD_KEYMAP_SIZE)
1098 		return -ENXIO;
1099 
1100 	ptr = kcalloc(n, sizeof(u32), GFP_KERNEL);
1101 	if (!ptr)
1102 		return -ENOMEM;
1103 
1104 	if (device_property_read_u32_array(dev, "linux,keymap", ptr, n)) {
1105 		dev_err(dev, "problem parsing FW keymap property\n");
1106 		kfree(ptr);
1107 		return -EINVAL;
1108 	}
1109 
1110 	memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
1111 	for (i = 0; i < n; i++) {
1112 		scancode = SCANCODE(ptr[i]);
1113 		keycode = KEYCODE(ptr[i]);
1114 		atkbd->keycode[scancode] = keycode;
1115 	}
1116 
1117 	kfree(ptr);
1118 	return 0;
1119 }
1120 
1121 /*
1122  * atkbd_set_keycode_table() initializes keyboard's keycode table
1123  * according to the selected scancode set
1124  */
1125 
1126 static void atkbd_set_keycode_table(struct atkbd *atkbd)
1127 {
1128 	struct device *dev = &atkbd->ps2dev.serio->dev;
1129 	unsigned int scancode;
1130 	int i, j;
1131 
1132 	memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
1133 	bitmap_zero(atkbd->force_release_mask, ATKBD_KEYMAP_SIZE);
1134 
1135 	if (!atkbd_get_keymap_from_fwnode(atkbd)) {
1136 		dev_dbg(dev, "Using FW keymap\n");
1137 	} else if (atkbd->translated) {
1138 		for (i = 0; i < 128; i++) {
1139 			scancode = atkbd_unxlate_table[i];
1140 			atkbd->keycode[i] = atkbd_set2_keycode[scancode];
1141 			atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80];
1142 			if (atkbd->scroll)
1143 				for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
1144 					if ((scancode | 0x80) == atkbd_scroll_keys[j].set2)
1145 						atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
1146 		}
1147 	} else if (atkbd->set == 3) {
1148 		memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
1149 	} else {
1150 		memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
1151 
1152 		if (atkbd->scroll)
1153 			for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) {
1154 				scancode = atkbd_scroll_keys[i].set2;
1155 				atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode;
1156 		}
1157 	}
1158 
1159 /*
1160  * HANGEUL and HANJA keys do not send release events so we need to
1161  * generate such events ourselves
1162  */
1163 	scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL);
1164 	atkbd->keycode[scancode] = KEY_HANGEUL;
1165 	__set_bit(scancode, atkbd->force_release_mask);
1166 
1167 	scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA);
1168 	atkbd->keycode[scancode] = KEY_HANJA;
1169 	__set_bit(scancode, atkbd->force_release_mask);
1170 
1171 /*
1172  * Perform additional fixups
1173  */
1174 	if (atkbd_platform_fixup)
1175 		atkbd_platform_fixup(atkbd, atkbd_platform_fixup_data);
1176 }
1177 
1178 /*
1179  * atkbd_set_device_attrs() sets up keyboard's input device structure
1180  */
1181 
1182 static void atkbd_set_device_attrs(struct atkbd *atkbd)
1183 {
1184 	struct input_dev *input_dev = atkbd->dev;
1185 	int i;
1186 
1187 	if (atkbd->extra)
1188 		snprintf(atkbd->name, sizeof(atkbd->name),
1189 			 "AT Set 2 Extra keyboard");
1190 	else
1191 		snprintf(atkbd->name, sizeof(atkbd->name),
1192 			 "AT %s Set %d keyboard",
1193 			 atkbd->translated ? "Translated" : "Raw", atkbd->set);
1194 
1195 	snprintf(atkbd->phys, sizeof(atkbd->phys),
1196 		 "%s/input0", atkbd->ps2dev.serio->phys);
1197 
1198 	input_dev->name = atkbd->name;
1199 	input_dev->phys = atkbd->phys;
1200 	input_dev->id.bustype = BUS_I8042;
1201 	input_dev->id.vendor = 0x0001;
1202 	input_dev->id.product = atkbd->translated ? 1 : atkbd->set;
1203 	input_dev->id.version = atkbd->id;
1204 	input_dev->event = atkbd_event;
1205 	input_dev->dev.parent = &atkbd->ps2dev.serio->dev;
1206 
1207 	input_set_drvdata(input_dev, atkbd);
1208 
1209 	input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
1210 		BIT_MASK(EV_MSC);
1211 
1212 	if (atkbd->write) {
1213 		input_dev->evbit[0] |= BIT_MASK(EV_LED);
1214 		input_dev->ledbit[0] = BIT_MASK(LED_NUML) |
1215 			BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL);
1216 	}
1217 
1218 	if (atkbd->extra)
1219 		input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) |
1220 			BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) |
1221 			BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC);
1222 
1223 	if (!atkbd->softrepeat) {
1224 		input_dev->rep[REP_DELAY] = 250;
1225 		input_dev->rep[REP_PERIOD] = 33;
1226 	}
1227 
1228 	input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) :
1229 		BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN);
1230 
1231 	if (atkbd->scroll) {
1232 		input_dev->evbit[0] |= BIT_MASK(EV_REL);
1233 		input_dev->relbit[0] = BIT_MASK(REL_WHEEL) |
1234 			BIT_MASK(REL_HWHEEL);
1235 		__set_bit(BTN_MIDDLE, input_dev->keybit);
1236 	}
1237 
1238 	input_dev->keycode = atkbd->keycode;
1239 	input_dev->keycodesize = sizeof(unsigned short);
1240 	input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
1241 
1242 	for (i = 0; i < ATKBD_KEYMAP_SIZE; i++) {
1243 		if (atkbd->keycode[i] != KEY_RESERVED &&
1244 		    atkbd->keycode[i] != ATKBD_KEY_NULL &&
1245 		    atkbd->keycode[i] < ATKBD_SPECIAL) {
1246 			__set_bit(atkbd->keycode[i], input_dev->keybit);
1247 		}
1248 	}
1249 }
1250 
1251 static void atkbd_parse_fwnode_data(struct serio *serio)
1252 {
1253 	struct atkbd *atkbd = atkbd_from_serio(serio);
1254 	struct device *dev = &serio->dev;
1255 	int n;
1256 
1257 	/* Parse "function-row-physmap" property */
1258 	n = device_property_count_u32(dev, "function-row-physmap");
1259 	if (n > 0 && n <= VIVALDI_MAX_FUNCTION_ROW_KEYS &&
1260 	    !device_property_read_u32_array(dev, "function-row-physmap",
1261 					    atkbd->vdata.function_row_physmap,
1262 					    n)) {
1263 		atkbd->vdata.num_function_row_keys = n;
1264 		dev_dbg(dev, "FW reported %d function-row key locations\n", n);
1265 	}
1266 }
1267 
1268 /*
1269  * atkbd_connect() is called when the serio module finds an interface
1270  * that isn't handled yet by an appropriate device driver. We check if
1271  * there is an AT keyboard out there and if yes, we register ourselves
1272  * to the input module.
1273  */
1274 
1275 static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
1276 {
1277 	struct atkbd *atkbd;
1278 	struct input_dev *dev;
1279 	int err = -ENOMEM;
1280 
1281 	atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL);
1282 	dev = input_allocate_device();
1283 	if (!atkbd || !dev)
1284 		goto fail1;
1285 
1286 	atkbd->dev = dev;
1287 	ps2_init(&atkbd->ps2dev, serio,
1288 		 atkbd_pre_receive_byte, atkbd_receive_byte);
1289 	INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work);
1290 	mutex_init(&atkbd->mutex);
1291 
1292 	switch (serio->id.type) {
1293 
1294 	case SERIO_8042_XL:
1295 		atkbd->translated = true;
1296 		fallthrough;
1297 
1298 	case SERIO_8042:
1299 		if (serio->write)
1300 			atkbd->write = true;
1301 		break;
1302 	}
1303 
1304 	atkbd->softraw = atkbd_softraw;
1305 	atkbd->softrepeat = atkbd_softrepeat;
1306 	atkbd->scroll = atkbd_scroll;
1307 
1308 	if (atkbd->softrepeat)
1309 		atkbd->softraw = true;
1310 
1311 	serio_set_drvdata(serio, atkbd);
1312 
1313 	err = serio_open(serio, drv);
1314 	if (err)
1315 		goto fail2;
1316 
1317 	if (atkbd->write) {
1318 
1319 		if (atkbd_probe(atkbd)) {
1320 			err = -ENODEV;
1321 			goto fail3;
1322 		}
1323 
1324 		atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
1325 		atkbd_reset_state(atkbd);
1326 
1327 	} else {
1328 		atkbd->set = 2;
1329 		atkbd->id = 0xab00;
1330 	}
1331 
1332 	atkbd_parse_fwnode_data(serio);
1333 
1334 	atkbd_set_keycode_table(atkbd);
1335 	atkbd_set_device_attrs(atkbd);
1336 
1337 	atkbd_enable(atkbd);
1338 	if (serio->write)
1339 		atkbd_activate(atkbd);
1340 
1341 	err = input_register_device(atkbd->dev);
1342 	if (err)
1343 		goto fail3;
1344 
1345 	return 0;
1346 
1347  fail3:	serio_close(serio);
1348  fail2:	serio_set_drvdata(serio, NULL);
1349  fail1:	input_free_device(dev);
1350 	kfree(atkbd);
1351 	return err;
1352 }
1353 
1354 /*
1355  * atkbd_reconnect() tries to restore keyboard into a sane state and is
1356  * most likely called on resume.
1357  */
1358 
1359 static int atkbd_reconnect(struct serio *serio)
1360 {
1361 	struct atkbd *atkbd = atkbd_from_serio(serio);
1362 	struct serio_driver *drv = serio->drv;
1363 	int retval = -1;
1364 
1365 	if (!atkbd || !drv) {
1366 		dev_dbg(&serio->dev,
1367 			"reconnect request, but serio is disconnected, ignoring...\n");
1368 		return -1;
1369 	}
1370 
1371 	mutex_lock(&atkbd->mutex);
1372 
1373 	atkbd_disable(atkbd);
1374 
1375 	if (atkbd->write) {
1376 		if (atkbd_probe(atkbd))
1377 			goto out;
1378 
1379 		if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
1380 			goto out;
1381 
1382 		/*
1383 		 * Restore LED state and repeat rate. While input core
1384 		 * will do this for us at resume time reconnect may happen
1385 		 * because user requested it via sysfs or simply because
1386 		 * keyboard was unplugged and plugged in again so we need
1387 		 * to do it ourselves here.
1388 		 */
1389 		atkbd_set_leds(atkbd);
1390 		if (!atkbd->softrepeat)
1391 			atkbd_set_repeat_rate(atkbd);
1392 
1393 	}
1394 
1395 	/*
1396 	 * Reset our state machine in case reconnect happened in the middle
1397 	 * of multi-byte scancode.
1398 	 */
1399 	atkbd->xl_bit = 0;
1400 	atkbd->emul = 0;
1401 
1402 	atkbd_enable(atkbd);
1403 	if (atkbd->write)
1404 		atkbd_activate(atkbd);
1405 
1406 	retval = 0;
1407 
1408  out:
1409 	mutex_unlock(&atkbd->mutex);
1410 	return retval;
1411 }
1412 
1413 static const struct serio_device_id atkbd_serio_ids[] = {
1414 	{
1415 		.type	= SERIO_8042,
1416 		.proto	= SERIO_ANY,
1417 		.id	= SERIO_ANY,
1418 		.extra	= SERIO_ANY,
1419 	},
1420 	{
1421 		.type	= SERIO_8042_XL,
1422 		.proto	= SERIO_ANY,
1423 		.id	= SERIO_ANY,
1424 		.extra	= SERIO_ANY,
1425 	},
1426 	{
1427 		.type	= SERIO_RS232,
1428 		.proto	= SERIO_PS2SER,
1429 		.id	= SERIO_ANY,
1430 		.extra	= SERIO_ANY,
1431 	},
1432 	{ 0 }
1433 };
1434 
1435 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
1436 
1437 static struct serio_driver atkbd_drv = {
1438 	.driver		= {
1439 		.name		= "atkbd",
1440 		.dev_groups	= atkbd_attribute_groups,
1441 	},
1442 	.description	= DRIVER_DESC,
1443 	.id_table	= atkbd_serio_ids,
1444 	.interrupt	= ps2_interrupt,
1445 	.connect	= atkbd_connect,
1446 	.reconnect	= atkbd_reconnect,
1447 	.disconnect	= atkbd_disconnect,
1448 	.cleanup	= atkbd_cleanup,
1449 };
1450 
1451 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
1452 				ssize_t (*handler)(struct atkbd *, char *))
1453 {
1454 	struct serio *serio = to_serio_port(dev);
1455 	struct atkbd *atkbd = atkbd_from_serio(serio);
1456 
1457 	return handler(atkbd, buf);
1458 }
1459 
1460 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
1461 				ssize_t (*handler)(struct atkbd *, const char *, size_t))
1462 {
1463 	struct serio *serio = to_serio_port(dev);
1464 	struct atkbd *atkbd = atkbd_from_serio(serio);
1465 	int retval;
1466 
1467 	retval = mutex_lock_interruptible(&atkbd->mutex);
1468 	if (retval)
1469 		return retval;
1470 
1471 	atkbd_disable(atkbd);
1472 	retval = handler(atkbd, buf, count);
1473 	atkbd_enable(atkbd);
1474 
1475 	mutex_unlock(&atkbd->mutex);
1476 
1477 	return retval;
1478 }
1479 
1480 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
1481 {
1482 	return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
1483 }
1484 
1485 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
1486 {
1487 	struct input_dev *old_dev, *new_dev;
1488 	unsigned int value;
1489 	int err;
1490 	bool old_extra;
1491 	unsigned char old_set;
1492 
1493 	if (!atkbd->write)
1494 		return -EIO;
1495 
1496 	err = kstrtouint(buf, 10, &value);
1497 	if (err)
1498 		return err;
1499 
1500 	if (value > 1)
1501 		return -EINVAL;
1502 
1503 	if (atkbd->extra != value) {
1504 		/*
1505 		 * Since device's properties will change we need to
1506 		 * unregister old device. But allocate and register
1507 		 * new one first to make sure we have it.
1508 		 */
1509 		old_dev = atkbd->dev;
1510 		old_extra = atkbd->extra;
1511 		old_set = atkbd->set;
1512 
1513 		new_dev = input_allocate_device();
1514 		if (!new_dev)
1515 			return -ENOMEM;
1516 
1517 		atkbd->dev = new_dev;
1518 		atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
1519 		atkbd_reset_state(atkbd);
1520 		atkbd_activate(atkbd);
1521 		atkbd_set_keycode_table(atkbd);
1522 		atkbd_set_device_attrs(atkbd);
1523 
1524 		err = input_register_device(atkbd->dev);
1525 		if (err) {
1526 			input_free_device(new_dev);
1527 
1528 			atkbd->dev = old_dev;
1529 			atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1530 			atkbd_set_keycode_table(atkbd);
1531 			atkbd_set_device_attrs(atkbd);
1532 
1533 			return err;
1534 		}
1535 		input_unregister_device(old_dev);
1536 
1537 	}
1538 	return count;
1539 }
1540 
1541 static ssize_t atkbd_show_force_release(struct atkbd *atkbd, char *buf)
1542 {
1543 	size_t len = scnprintf(buf, PAGE_SIZE - 1, "%*pbl",
1544 			       ATKBD_KEYMAP_SIZE, atkbd->force_release_mask);
1545 
1546 	buf[len++] = '\n';
1547 	buf[len] = '\0';
1548 
1549 	return len;
1550 }
1551 
1552 static ssize_t atkbd_set_force_release(struct atkbd *atkbd,
1553 					const char *buf, size_t count)
1554 {
1555 	/* 64 bytes on stack should be acceptable */
1556 	DECLARE_BITMAP(new_mask, ATKBD_KEYMAP_SIZE);
1557 	int err;
1558 
1559 	err = bitmap_parselist(buf, new_mask, ATKBD_KEYMAP_SIZE);
1560 	if (err)
1561 		return err;
1562 
1563 	memcpy(atkbd->force_release_mask, new_mask, sizeof(atkbd->force_release_mask));
1564 	return count;
1565 }
1566 
1567 
1568 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
1569 {
1570 	return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
1571 }
1572 
1573 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
1574 {
1575 	struct input_dev *old_dev, *new_dev;
1576 	unsigned int value;
1577 	int err;
1578 	bool old_scroll;
1579 
1580 	err = kstrtouint(buf, 10, &value);
1581 	if (err)
1582 		return err;
1583 
1584 	if (value > 1)
1585 		return -EINVAL;
1586 
1587 	if (atkbd->scroll != value) {
1588 		old_dev = atkbd->dev;
1589 		old_scroll = atkbd->scroll;
1590 
1591 		new_dev = input_allocate_device();
1592 		if (!new_dev)
1593 			return -ENOMEM;
1594 
1595 		atkbd->dev = new_dev;
1596 		atkbd->scroll = value;
1597 		atkbd_set_keycode_table(atkbd);
1598 		atkbd_set_device_attrs(atkbd);
1599 
1600 		err = input_register_device(atkbd->dev);
1601 		if (err) {
1602 			input_free_device(new_dev);
1603 
1604 			atkbd->scroll = old_scroll;
1605 			atkbd->dev = old_dev;
1606 			atkbd_set_keycode_table(atkbd);
1607 			atkbd_set_device_attrs(atkbd);
1608 
1609 			return err;
1610 		}
1611 		input_unregister_device(old_dev);
1612 	}
1613 	return count;
1614 }
1615 
1616 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
1617 {
1618 	return sprintf(buf, "%d\n", atkbd->set);
1619 }
1620 
1621 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
1622 {
1623 	struct input_dev *old_dev, *new_dev;
1624 	unsigned int value;
1625 	int err;
1626 	unsigned char old_set;
1627 	bool old_extra;
1628 
1629 	if (!atkbd->write)
1630 		return -EIO;
1631 
1632 	err = kstrtouint(buf, 10, &value);
1633 	if (err)
1634 		return err;
1635 
1636 	if (value != 2 && value != 3)
1637 		return -EINVAL;
1638 
1639 	if (atkbd->set != value) {
1640 		old_dev = atkbd->dev;
1641 		old_extra = atkbd->extra;
1642 		old_set = atkbd->set;
1643 
1644 		new_dev = input_allocate_device();
1645 		if (!new_dev)
1646 			return -ENOMEM;
1647 
1648 		atkbd->dev = new_dev;
1649 		atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra);
1650 		atkbd_reset_state(atkbd);
1651 		atkbd_activate(atkbd);
1652 		atkbd_set_keycode_table(atkbd);
1653 		atkbd_set_device_attrs(atkbd);
1654 
1655 		err = input_register_device(atkbd->dev);
1656 		if (err) {
1657 			input_free_device(new_dev);
1658 
1659 			atkbd->dev = old_dev;
1660 			atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1661 			atkbd_set_keycode_table(atkbd);
1662 			atkbd_set_device_attrs(atkbd);
1663 
1664 			return err;
1665 		}
1666 		input_unregister_device(old_dev);
1667 	}
1668 	return count;
1669 }
1670 
1671 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
1672 {
1673 	return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
1674 }
1675 
1676 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
1677 {
1678 	struct input_dev *old_dev, *new_dev;
1679 	unsigned int value;
1680 	int err;
1681 	bool old_softrepeat, old_softraw;
1682 
1683 	if (!atkbd->write)
1684 		return -EIO;
1685 
1686 	err = kstrtouint(buf, 10, &value);
1687 	if (err)
1688 		return err;
1689 
1690 	if (value > 1)
1691 		return -EINVAL;
1692 
1693 	if (atkbd->softrepeat != value) {
1694 		old_dev = atkbd->dev;
1695 		old_softrepeat = atkbd->softrepeat;
1696 		old_softraw = atkbd->softraw;
1697 
1698 		new_dev = input_allocate_device();
1699 		if (!new_dev)
1700 			return -ENOMEM;
1701 
1702 		atkbd->dev = new_dev;
1703 		atkbd->softrepeat = value;
1704 		if (atkbd->softrepeat)
1705 			atkbd->softraw = true;
1706 		atkbd_set_device_attrs(atkbd);
1707 
1708 		err = input_register_device(atkbd->dev);
1709 		if (err) {
1710 			input_free_device(new_dev);
1711 
1712 			atkbd->dev = old_dev;
1713 			atkbd->softrepeat = old_softrepeat;
1714 			atkbd->softraw = old_softraw;
1715 			atkbd_set_device_attrs(atkbd);
1716 
1717 			return err;
1718 		}
1719 		input_unregister_device(old_dev);
1720 	}
1721 	return count;
1722 }
1723 
1724 
1725 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
1726 {
1727 	return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
1728 }
1729 
1730 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
1731 {
1732 	struct input_dev *old_dev, *new_dev;
1733 	unsigned int value;
1734 	int err;
1735 	bool old_softraw;
1736 
1737 	err = kstrtouint(buf, 10, &value);
1738 	if (err)
1739 		return err;
1740 
1741 	if (value > 1)
1742 		return -EINVAL;
1743 
1744 	if (atkbd->softraw != value) {
1745 		old_dev = atkbd->dev;
1746 		old_softraw = atkbd->softraw;
1747 
1748 		new_dev = input_allocate_device();
1749 		if (!new_dev)
1750 			return -ENOMEM;
1751 
1752 		atkbd->dev = new_dev;
1753 		atkbd->softraw = value;
1754 		atkbd_set_device_attrs(atkbd);
1755 
1756 		err = input_register_device(atkbd->dev);
1757 		if (err) {
1758 			input_free_device(new_dev);
1759 
1760 			atkbd->dev = old_dev;
1761 			atkbd->softraw = old_softraw;
1762 			atkbd_set_device_attrs(atkbd);
1763 
1764 			return err;
1765 		}
1766 		input_unregister_device(old_dev);
1767 	}
1768 	return count;
1769 }
1770 
1771 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
1772 {
1773 	return sprintf(buf, "%lu\n", atkbd->err_count);
1774 }
1775 
1776 static int __init atkbd_setup_forced_release(const struct dmi_system_id *id)
1777 {
1778 	atkbd_platform_fixup = atkbd_apply_forced_release_keylist;
1779 	atkbd_platform_fixup_data = id->driver_data;
1780 
1781 	return 1;
1782 }
1783 
1784 static int __init atkbd_setup_scancode_fixup(const struct dmi_system_id *id)
1785 {
1786 	atkbd_platform_scancode_fixup = id->driver_data;
1787 
1788 	return 1;
1789 }
1790 
1791 static int __init atkbd_deactivate_fixup(const struct dmi_system_id *id)
1792 {
1793 	atkbd_skip_deactivate = true;
1794 	return 1;
1795 }
1796 
1797 /*
1798  * NOTE: do not add any more "force release" quirks to this table.  The
1799  * task of adjusting list of keys that should be "released" automatically
1800  * by the driver is now delegated to userspace tools, such as udev, so
1801  * submit such quirks there.
1802  */
1803 static const struct dmi_system_id atkbd_dmi_quirk_table[] __initconst = {
1804 	{
1805 		.matches = {
1806 			DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
1807 			DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1808 		},
1809 		.callback = atkbd_setup_forced_release,
1810 		.driver_data = atkbd_dell_laptop_forced_release_keys,
1811 	},
1812 	{
1813 		.matches = {
1814 			DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
1815 			DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1816 		},
1817 		.callback = atkbd_setup_forced_release,
1818 		.driver_data = atkbd_dell_laptop_forced_release_keys,
1819 	},
1820 	{
1821 		.matches = {
1822 			DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1823 			DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"),
1824 		},
1825 		.callback = atkbd_setup_forced_release,
1826 		.driver_data = atkbd_hp_forced_release_keys,
1827 	},
1828 	{
1829 		.matches = {
1830 			DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1831 			DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion ZV6100"),
1832 		},
1833 		.callback = atkbd_setup_forced_release,
1834 		.driver_data = atkbd_volume_forced_release_keys,
1835 	},
1836 	{
1837 		.matches = {
1838 			DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1839 			DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4000"),
1840 		},
1841 		.callback = atkbd_setup_forced_release,
1842 		.driver_data = atkbd_volume_forced_release_keys,
1843 	},
1844 	{
1845 		.matches = {
1846 			DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1847 			DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4100"),
1848 		},
1849 		.callback = atkbd_setup_forced_release,
1850 		.driver_data = atkbd_volume_forced_release_keys,
1851 	},
1852 	{
1853 		.matches = {
1854 			DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1855 			DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4200"),
1856 		},
1857 		.callback = atkbd_setup_forced_release,
1858 		.driver_data = atkbd_volume_forced_release_keys,
1859 	},
1860 	{
1861 		/* Inventec Symphony */
1862 		.matches = {
1863 			DMI_MATCH(DMI_SYS_VENDOR, "INVENTEC"),
1864 			DMI_MATCH(DMI_PRODUCT_NAME, "SYMPHONY 6.0/7.0"),
1865 		},
1866 		.callback = atkbd_setup_forced_release,
1867 		.driver_data = atkbd_volume_forced_release_keys,
1868 	},
1869 	{
1870 		/* Samsung NC10 */
1871 		.matches = {
1872 			DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1873 			DMI_MATCH(DMI_PRODUCT_NAME, "NC10"),
1874 		},
1875 		.callback = atkbd_setup_forced_release,
1876 		.driver_data = atkbd_samsung_forced_release_keys,
1877 	},
1878 	{
1879 		/* Samsung NC20 */
1880 		.matches = {
1881 			DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1882 			DMI_MATCH(DMI_PRODUCT_NAME, "NC20"),
1883 		},
1884 		.callback = atkbd_setup_forced_release,
1885 		.driver_data = atkbd_samsung_forced_release_keys,
1886 	},
1887 	{
1888 		/* Samsung SQ45S70S */
1889 		.matches = {
1890 			DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1891 			DMI_MATCH(DMI_PRODUCT_NAME, "SQ45S70S"),
1892 		},
1893 		.callback = atkbd_setup_forced_release,
1894 		.driver_data = atkbd_samsung_forced_release_keys,
1895 	},
1896 	{
1897 		/* Fujitsu Amilo PA 1510 */
1898 		.matches = {
1899 			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1900 			DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 1510"),
1901 		},
1902 		.callback = atkbd_setup_forced_release,
1903 		.driver_data = atkbd_volume_forced_release_keys,
1904 	},
1905 	{
1906 		/* Fujitsu Amilo Pi 3525 */
1907 		.matches = {
1908 			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1909 			DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 3525"),
1910 		},
1911 		.callback = atkbd_setup_forced_release,
1912 		.driver_data = atkbd_amilo_pi3525_forced_release_keys,
1913 	},
1914 	{
1915 		/* Fujitsu Amilo Xi 3650 */
1916 		.matches = {
1917 			DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1918 			DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 3650"),
1919 		},
1920 		.callback = atkbd_setup_forced_release,
1921 		.driver_data = atkbd_amilo_xi3650_forced_release_keys,
1922 	},
1923 	{
1924 		.matches = {
1925 			DMI_MATCH(DMI_SYS_VENDOR, "Soltech Corporation"),
1926 			DMI_MATCH(DMI_PRODUCT_NAME, "TA12"),
1927 		},
1928 		.callback = atkbd_setup_forced_release,
1929 		.driver_data = atkdb_soltech_ta12_forced_release_keys,
1930 	},
1931 	{
1932 		/* OQO Model 01+ */
1933 		.matches = {
1934 			DMI_MATCH(DMI_SYS_VENDOR, "OQO"),
1935 			DMI_MATCH(DMI_PRODUCT_NAME, "ZEPTO"),
1936 		},
1937 		.callback = atkbd_setup_scancode_fixup,
1938 		.driver_data = atkbd_oqo_01plus_scancode_fixup,
1939 	},
1940 	{
1941 		.matches = {
1942 			DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"),
1943 		},
1944 		.callback = atkbd_deactivate_fixup,
1945 	},
1946 	{ }
1947 };
1948 
1949 static int __init atkbd_init(void)
1950 {
1951 	dmi_check_system(atkbd_dmi_quirk_table);
1952 
1953 	return serio_register_driver(&atkbd_drv);
1954 }
1955 
1956 static void __exit atkbd_exit(void)
1957 {
1958 	serio_unregister_driver(&atkbd_drv);
1959 }
1960 
1961 module_init(atkbd_init);
1962 module_exit(atkbd_exit);
1963