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1/*
2 * AT and PS/2 keyboard driver
3 *
4 * Copyright (c) 1999-2002 Vojtech Pavlik
5 */
6
7/*
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License version 2 as published by
10 * the Free Software Foundation.
11 */
12
13/*
14 * This driver can handle standard AT keyboards and PS/2 keyboards in
15 * Translated and Raw Set 2 and Set 3, as well as AT keyboards on dumb
16 * input-only controllers and AT keyboards connected over a one way RS232
17 * converter.
18 */
19
20#include <linux/delay.h>
21#include <linux/module.h>
22#include <linux/slab.h>
23#include <linux/interrupt.h>
24#include <linux/init.h>
25#include <linux/input.h>
26#include <linux/serio.h>
27#include <linux/workqueue.h>
28#include <linux/libps2.h>
29#include <linux/mutex.h>
30#include <linux/dmi.h>
31
32#define DRIVER_DESC "AT and PS/2 keyboard driver"
33
34MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
35MODULE_DESCRIPTION(DRIVER_DESC);
36MODULE_LICENSE("GPL");
37
38static int atkbd_set = 2;
39module_param_named(set, atkbd_set, int, 0);
40MODULE_PARM_DESC(set, "Select keyboard code set (2 = default, 3 = PS/2 native)");
41
42#if defined(__i386__) || defined(__x86_64__) || defined(__hppa__)
43static bool atkbd_reset;
44#else
45static bool atkbd_reset = true;
46#endif
47module_param_named(reset, atkbd_reset, bool, 0);
48MODULE_PARM_DESC(reset, "Reset keyboard during initialization");
49
50static bool atkbd_softrepeat;
51module_param_named(softrepeat, atkbd_softrepeat, bool, 0);
52MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat");
53
54static bool atkbd_softraw = true;
55module_param_named(softraw, atkbd_softraw, bool, 0);
56MODULE_PARM_DESC(softraw, "Use software generated rawmode");
57
58static bool atkbd_scroll;
59module_param_named(scroll, atkbd_scroll, bool, 0);
60MODULE_PARM_DESC(scroll, "Enable scroll-wheel on MS Office and similar keyboards");
61
62static bool atkbd_extra;
63module_param_named(extra, atkbd_extra, bool, 0);
64MODULE_PARM_DESC(extra, "Enable extra LEDs and keys on IBM RapidAcces, EzKey and similar keyboards");
65
66static bool atkbd_terminal;
67module_param_named(terminal, atkbd_terminal, bool, 0);
68MODULE_PARM_DESC(terminal, "Enable break codes on an IBM Terminal keyboard connected via AT/PS2");
69
70/*
71 * Scancode to keycode tables. These are just the default setting, and
72 * are loadable via a userland utility.
73 */
74
75#define ATKBD_KEYMAP_SIZE 512
76
77static const unsigned short atkbd_set2_keycode[ATKBD_KEYMAP_SIZE] = {
78
79#ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES
80
81/* XXX: need a more general approach */
82
83#include "hpps2atkbd.h" /* include the keyboard scancodes */
84
85#else
86 0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117,
87 0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0,
88 0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183,
89 0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185,
90 0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0,
91 0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85,
92 0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0,
93 82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99,
94
95 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
96 217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125,
97 173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127,
98 159, 0,115, 0,164, 0, 0,116,158, 0,172,166, 0, 0, 0,142,
99 157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0,
100 226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0,
101 0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112,
102 110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0,
103
104 0, 0, 0, 65, 99,
105#endif
106};
107
108static const unsigned short atkbd_set3_keycode[ATKBD_KEYMAP_SIZE] = {
109
110 0, 0, 0, 0, 0, 0, 0, 59, 1,138,128,129,130, 15, 41, 60,
111 131, 29, 42, 86, 58, 16, 2, 61,133, 56, 44, 31, 30, 17, 3, 62,
112 134, 46, 45, 32, 18, 5, 4, 63,135, 57, 47, 33, 20, 19, 6, 64,
113 136, 49, 48, 35, 34, 21, 7, 65,137,100, 50, 36, 22, 8, 9, 66,
114 125, 51, 37, 23, 24, 11, 10, 67,126, 52, 53, 38, 39, 25, 12, 68,
115 113,114, 40, 43, 26, 13, 87, 99, 97, 54, 28, 27, 43, 43, 88, 70,
116 108,105,119,103,111,107, 14,110, 0, 79,106, 75, 71,109,102,104,
117 82, 83, 80, 76, 77, 72, 69, 98, 0, 96, 81, 0, 78, 73, 55,183,
118
119 184,185,186,187, 74, 94, 92, 93, 0, 0, 0,125,126,127,112, 0,
120 0,139,172,163,165,115,152,172,166,140,160,154,113,114,167,168,
121 148,149,147,140
122};
123
124static const unsigned short atkbd_unxlate_table[128] = {
125 0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13,
126 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27,
127 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42,
128 50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3,
129 11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105,
130 114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63,
131 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111,
132 19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110
133};
134
135#define ATKBD_CMD_SETLEDS 0x10ed
136#define ATKBD_CMD_GSCANSET 0x11f0
137#define ATKBD_CMD_SSCANSET 0x10f0
138#define ATKBD_CMD_GETID 0x02f2
139#define ATKBD_CMD_SETREP 0x10f3
140#define ATKBD_CMD_ENABLE 0x00f4
141#define ATKBD_CMD_RESET_DIS 0x00f5 /* Reset to defaults and disable */
142#define ATKBD_CMD_RESET_DEF 0x00f6 /* Reset to defaults */
143#define ATKBD_CMD_SETALL_MB 0x00f8 /* Set all keys to give break codes */
144#define ATKBD_CMD_SETALL_MBR 0x00fa /* ... and repeat */
145#define ATKBD_CMD_RESET_BAT 0x02ff
146#define ATKBD_CMD_RESEND 0x00fe
147#define ATKBD_CMD_EX_ENABLE 0x10ea
148#define ATKBD_CMD_EX_SETLEDS 0x20eb
149#define ATKBD_CMD_OK_GETID 0x02e8
150
151#define ATKBD_RET_ACK 0xfa
152#define ATKBD_RET_NAK 0xfe
153#define ATKBD_RET_BAT 0xaa
154#define ATKBD_RET_EMUL0 0xe0
155#define ATKBD_RET_EMUL1 0xe1
156#define ATKBD_RET_RELEASE 0xf0
157#define ATKBD_RET_HANJA 0xf1
158#define ATKBD_RET_HANGEUL 0xf2
159#define ATKBD_RET_ERR 0xff
160
161#define ATKBD_KEY_UNKNOWN 0
162#define ATKBD_KEY_NULL 255
163
164#define ATKBD_SCR_1 0xfffe
165#define ATKBD_SCR_2 0xfffd
166#define ATKBD_SCR_4 0xfffc
167#define ATKBD_SCR_8 0xfffb
168#define ATKBD_SCR_CLICK 0xfffa
169#define ATKBD_SCR_LEFT 0xfff9
170#define ATKBD_SCR_RIGHT 0xfff8
171
172#define ATKBD_SPECIAL ATKBD_SCR_RIGHT
173
174#define ATKBD_LED_EVENT_BIT 0
175#define ATKBD_REP_EVENT_BIT 1
176
177#define ATKBD_XL_ERR 0x01
178#define ATKBD_XL_BAT 0x02
179#define ATKBD_XL_ACK 0x04
180#define ATKBD_XL_NAK 0x08
181#define ATKBD_XL_HANGEUL 0x10
182#define ATKBD_XL_HANJA 0x20
183
184static const struct {
185 unsigned short keycode;
186 unsigned char set2;
187} atkbd_scroll_keys[] = {
188 { ATKBD_SCR_1, 0xc5 },
189 { ATKBD_SCR_2, 0x9d },
190 { ATKBD_SCR_4, 0xa4 },
191 { ATKBD_SCR_8, 0x9b },
192 { ATKBD_SCR_CLICK, 0xe0 },
193 { ATKBD_SCR_LEFT, 0xcb },
194 { ATKBD_SCR_RIGHT, 0xd2 },
195};
196
197/*
198 * The atkbd control structure
199 */
200
201struct atkbd {
202
203 struct ps2dev ps2dev;
204 struct input_dev *dev;
205
206 /* Written only during init */
207 char name[64];
208 char phys[32];
209
210 unsigned short id;
211 unsigned short keycode[ATKBD_KEYMAP_SIZE];
212 DECLARE_BITMAP(force_release_mask, ATKBD_KEYMAP_SIZE);
213 unsigned char set;
214 bool translated;
215 bool extra;
216 bool write;
217 bool softrepeat;
218 bool softraw;
219 bool scroll;
220 bool enabled;
221
222 /* Accessed only from interrupt */
223 unsigned char emul;
224 bool resend;
225 bool release;
226 unsigned long xl_bit;
227 unsigned int last;
228 unsigned long time;
229 unsigned long err_count;
230
231 struct delayed_work event_work;
232 unsigned long event_jiffies;
233 unsigned long event_mask;
234
235 /* Serializes reconnect(), attr->set() and event work */
236 struct mutex mutex;
237};
238
239/*
240 * System-specific keymap fixup routine
241 */
242static void (*atkbd_platform_fixup)(struct atkbd *, const void *data);
243static void *atkbd_platform_fixup_data;
244static unsigned int (*atkbd_platform_scancode_fixup)(struct atkbd *, unsigned int);
245
246static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
247 ssize_t (*handler)(struct atkbd *, char *));
248static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
249 ssize_t (*handler)(struct atkbd *, const char *, size_t));
250#define ATKBD_DEFINE_ATTR(_name) \
251static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
252static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \
253static ssize_t atkbd_do_show_##_name(struct device *d, \
254 struct device_attribute *attr, char *b) \
255{ \
256 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
257} \
258static ssize_t atkbd_do_set_##_name(struct device *d, \
259 struct device_attribute *attr, const char *b, size_t s) \
260{ \
261 return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name); \
262} \
263static struct device_attribute atkbd_attr_##_name = \
264 __ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name);
265
266ATKBD_DEFINE_ATTR(extra);
267ATKBD_DEFINE_ATTR(force_release);
268ATKBD_DEFINE_ATTR(scroll);
269ATKBD_DEFINE_ATTR(set);
270ATKBD_DEFINE_ATTR(softrepeat);
271ATKBD_DEFINE_ATTR(softraw);
272
273#define ATKBD_DEFINE_RO_ATTR(_name) \
274static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
275static ssize_t atkbd_do_show_##_name(struct device *d, \
276 struct device_attribute *attr, char *b) \
277{ \
278 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
279} \
280static struct device_attribute atkbd_attr_##_name = \
281 __ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL);
282
283ATKBD_DEFINE_RO_ATTR(err_count);
284
285static struct attribute *atkbd_attributes[] = {
286 &atkbd_attr_extra.attr,
287 &atkbd_attr_force_release.attr,
288 &atkbd_attr_scroll.attr,
289 &atkbd_attr_set.attr,
290 &atkbd_attr_softrepeat.attr,
291 &atkbd_attr_softraw.attr,
292 &atkbd_attr_err_count.attr,
293 NULL
294};
295
296static struct attribute_group atkbd_attribute_group = {
297 .attrs = atkbd_attributes,
298};
299
300static const unsigned int xl_table[] = {
301 ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK,
302 ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL,
303};
304
305/*
306 * Checks if we should mangle the scancode to extract 'release' bit
307 * in translated mode.
308 */
309static bool atkbd_need_xlate(unsigned long xl_bit, unsigned char code)
310{
311 int i;
312
313 if (code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1)
314 return false;
315
316 for (i = 0; i < ARRAY_SIZE(xl_table); i++)
317 if (code == xl_table[i])
318 return test_bit(i, &xl_bit);
319
320 return true;
321}
322
323/*
324 * Calculates new value of xl_bit so the driver can distinguish
325 * between make/break pair of scancodes for select keys and PS/2
326 * protocol responses.
327 */
328static void atkbd_calculate_xl_bit(struct atkbd *atkbd, unsigned char code)
329{
330 int i;
331
332 for (i = 0; i < ARRAY_SIZE(xl_table); i++) {
333 if (!((code ^ xl_table[i]) & 0x7f)) {
334 if (code & 0x80)
335 __clear_bit(i, &atkbd->xl_bit);
336 else
337 __set_bit(i, &atkbd->xl_bit);
338 break;
339 }
340 }
341}
342
343/*
344 * Encode the scancode, 0xe0 prefix, and high bit into a single integer,
345 * keeping kernel 2.4 compatibility for set 2
346 */
347static unsigned int atkbd_compat_scancode(struct atkbd *atkbd, unsigned int code)
348{
349 if (atkbd->set == 3) {
350 if (atkbd->emul == 1)
351 code |= 0x100;
352 } else {
353 code = (code & 0x7f) | ((code & 0x80) << 1);
354 if (atkbd->emul == 1)
355 code |= 0x80;
356 }
357
358 return code;
359}
360
361/*
362 * atkbd_interrupt(). Here takes place processing of data received from
363 * the keyboard into events.
364 */
365
366static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data,
367 unsigned int flags)
368{
369 struct atkbd *atkbd = serio_get_drvdata(serio);
370 struct input_dev *dev = atkbd->dev;
371 unsigned int code = data;
372 int scroll = 0, hscroll = 0, click = -1;
373 int value;
374 unsigned short keycode;
375
376 dev_dbg(&serio->dev, "Received %02x flags %02x\n", data, flags);
377
378#if !defined(__i386__) && !defined (__x86_64__)
379 if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) {
380 dev_warn(&serio->dev, "Frame/parity error: %02x\n", flags);
381 serio_write(serio, ATKBD_CMD_RESEND);
382 atkbd->resend = true;
383 goto out;
384 }
385
386 if (!flags && data == ATKBD_RET_ACK)
387 atkbd->resend = false;
388#endif
389
390 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_ACK))
391 if (ps2_handle_ack(&atkbd->ps2dev, data))
392 goto out;
393
394 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_CMD))
395 if (ps2_handle_response(&atkbd->ps2dev, data))
396 goto out;
397
398 if (!atkbd->enabled)
399 goto out;
400
401 input_event(dev, EV_MSC, MSC_RAW, code);
402
403 if (atkbd_platform_scancode_fixup)
404 code = atkbd_platform_scancode_fixup(atkbd, code);
405
406 if (atkbd->translated) {
407
408 if (atkbd->emul || atkbd_need_xlate(atkbd->xl_bit, code)) {
409 atkbd->release = code >> 7;
410 code &= 0x7f;
411 }
412
413 if (!atkbd->emul)
414 atkbd_calculate_xl_bit(atkbd, data);
415 }
416
417 switch (code) {
418 case ATKBD_RET_BAT:
419 atkbd->enabled = false;
420 serio_reconnect(atkbd->ps2dev.serio);
421 goto out;
422 case ATKBD_RET_EMUL0:
423 atkbd->emul = 1;
424 goto out;
425 case ATKBD_RET_EMUL1:
426 atkbd->emul = 2;
427 goto out;
428 case ATKBD_RET_RELEASE:
429 atkbd->release = true;
430 goto out;
431 case ATKBD_RET_ACK:
432 case ATKBD_RET_NAK:
433 if (printk_ratelimit())
434 dev_warn(&serio->dev,
435 "Spurious %s on %s. "
436 "Some program might be trying access hardware directly.\n",
437 data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys);
438 goto out;
439 case ATKBD_RET_ERR:
440 atkbd->err_count++;
441 dev_dbg(&serio->dev, "Keyboard on %s reports too many keys pressed.\n",
442 serio->phys);
443 goto out;
444 }
445
446 code = atkbd_compat_scancode(atkbd, code);
447
448 if (atkbd->emul && --atkbd->emul)
449 goto out;
450
451 keycode = atkbd->keycode[code];
452
453 if (keycode != ATKBD_KEY_NULL)
454 input_event(dev, EV_MSC, MSC_SCAN, code);
455
456 switch (keycode) {
457 case ATKBD_KEY_NULL:
458 break;
459 case ATKBD_KEY_UNKNOWN:
460 dev_warn(&serio->dev,
461 "Unknown key %s (%s set %d, code %#x on %s).\n",
462 atkbd->release ? "released" : "pressed",
463 atkbd->translated ? "translated" : "raw",
464 atkbd->set, code, serio->phys);
465 dev_warn(&serio->dev,
466 "Use 'setkeycodes %s%02x <keycode>' to make it known.\n",
467 code & 0x80 ? "e0" : "", code & 0x7f);
468 input_sync(dev);
469 break;
470 case ATKBD_SCR_1:
471 scroll = 1;
472 break;
473 case ATKBD_SCR_2:
474 scroll = 2;
475 break;
476 case ATKBD_SCR_4:
477 scroll = 4;
478 break;
479 case ATKBD_SCR_8:
480 scroll = 8;
481 break;
482 case ATKBD_SCR_CLICK:
483 click = !atkbd->release;
484 break;
485 case ATKBD_SCR_LEFT:
486 hscroll = -1;
487 break;
488 case ATKBD_SCR_RIGHT:
489 hscroll = 1;
490 break;
491 default:
492 if (atkbd->release) {
493 value = 0;
494 atkbd->last = 0;
495 } else if (!atkbd->softrepeat && test_bit(keycode, dev->key)) {
496 /* Workaround Toshiba laptop multiple keypress */
497 value = time_before(jiffies, atkbd->time) && atkbd->last == code ? 1 : 2;
498 } else {
499 value = 1;
500 atkbd->last = code;
501 atkbd->time = jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]) / 2;
502 }
503
504 input_event(dev, EV_KEY, keycode, value);
505 input_sync(dev);
506
507 if (value && test_bit(code, atkbd->force_release_mask)) {
508 input_report_key(dev, keycode, 0);
509 input_sync(dev);
510 }
511 }
512
513 if (atkbd->scroll) {
514 if (click != -1)
515 input_report_key(dev, BTN_MIDDLE, click);
516 input_report_rel(dev, REL_WHEEL,
517 atkbd->release ? -scroll : scroll);
518 input_report_rel(dev, REL_HWHEEL, hscroll);
519 input_sync(dev);
520 }
521
522 atkbd->release = false;
523out:
524 return IRQ_HANDLED;
525}
526
527static int atkbd_set_repeat_rate(struct atkbd *atkbd)
528{
529 const short period[32] =
530 { 33, 37, 42, 46, 50, 54, 58, 63, 67, 75, 83, 92, 100, 109, 116, 125,
531 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 };
532 const short delay[4] =
533 { 250, 500, 750, 1000 };
534
535 struct input_dev *dev = atkbd->dev;
536 unsigned char param;
537 int i = 0, j = 0;
538
539 while (i < ARRAY_SIZE(period) - 1 && period[i] < dev->rep[REP_PERIOD])
540 i++;
541 dev->rep[REP_PERIOD] = period[i];
542
543 while (j < ARRAY_SIZE(delay) - 1 && delay[j] < dev->rep[REP_DELAY])
544 j++;
545 dev->rep[REP_DELAY] = delay[j];
546
547 param = i | (j << 5);
548 return ps2_command(&atkbd->ps2dev, ¶m, ATKBD_CMD_SETREP);
549}
550
551static int atkbd_set_leds(struct atkbd *atkbd)
552{
553 struct input_dev *dev = atkbd->dev;
554 unsigned char param[2];
555
556 param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0)
557 | (test_bit(LED_NUML, dev->led) ? 2 : 0)
558 | (test_bit(LED_CAPSL, dev->led) ? 4 : 0);
559 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS))
560 return -1;
561
562 if (atkbd->extra) {
563 param[0] = 0;
564 param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0)
565 | (test_bit(LED_SLEEP, dev->led) ? 0x02 : 0)
566 | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0)
567 | (test_bit(LED_MISC, dev->led) ? 0x10 : 0)
568 | (test_bit(LED_MUTE, dev->led) ? 0x20 : 0);
569 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS))
570 return -1;
571 }
572
573 return 0;
574}
575
576/*
577 * atkbd_event_work() is used to complete processing of events that
578 * can not be processed by input_event() which is often called from
579 * interrupt context.
580 */
581
582static void atkbd_event_work(struct work_struct *work)
583{
584 struct atkbd *atkbd = container_of(work, struct atkbd, event_work.work);
585
586 mutex_lock(&atkbd->mutex);
587
588 if (!atkbd->enabled) {
589 /*
590 * Serio ports are resumed asynchronously so while driver core
591 * thinks that device is already fully operational in reality
592 * it may not be ready yet. In this case we need to keep
593 * rescheduling till reconnect completes.
594 */
595 schedule_delayed_work(&atkbd->event_work,
596 msecs_to_jiffies(100));
597 } else {
598 if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask))
599 atkbd_set_leds(atkbd);
600
601 if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask))
602 atkbd_set_repeat_rate(atkbd);
603 }
604
605 mutex_unlock(&atkbd->mutex);
606}
607
608/*
609 * Schedule switch for execution. We need to throttle requests,
610 * otherwise keyboard may become unresponsive.
611 */
612static void atkbd_schedule_event_work(struct atkbd *atkbd, int event_bit)
613{
614 unsigned long delay = msecs_to_jiffies(50);
615
616 if (time_after(jiffies, atkbd->event_jiffies + delay))
617 delay = 0;
618
619 atkbd->event_jiffies = jiffies;
620 set_bit(event_bit, &atkbd->event_mask);
621 mb();
622 schedule_delayed_work(&atkbd->event_work, delay);
623}
624
625/*
626 * Event callback from the input module. Events that change the state of
627 * the hardware are processed here. If action can not be performed in
628 * interrupt context it is offloaded to atkbd_event_work.
629 */
630
631static int atkbd_event(struct input_dev *dev,
632 unsigned int type, unsigned int code, int value)
633{
634 struct atkbd *atkbd = input_get_drvdata(dev);
635
636 if (!atkbd->write)
637 return -1;
638
639 switch (type) {
640
641 case EV_LED:
642 atkbd_schedule_event_work(atkbd, ATKBD_LED_EVENT_BIT);
643 return 0;
644
645 case EV_REP:
646 if (!atkbd->softrepeat)
647 atkbd_schedule_event_work(atkbd, ATKBD_REP_EVENT_BIT);
648 return 0;
649
650 default:
651 return -1;
652 }
653}
654
655/*
656 * atkbd_enable() signals that interrupt handler is allowed to
657 * generate input events.
658 */
659
660static inline void atkbd_enable(struct atkbd *atkbd)
661{
662 serio_pause_rx(atkbd->ps2dev.serio);
663 atkbd->enabled = true;
664 serio_continue_rx(atkbd->ps2dev.serio);
665}
666
667/*
668 * atkbd_disable() tells input handler that all incoming data except
669 * for ACKs and command response should be dropped.
670 */
671
672static inline void atkbd_disable(struct atkbd *atkbd)
673{
674 serio_pause_rx(atkbd->ps2dev.serio);
675 atkbd->enabled = false;
676 serio_continue_rx(atkbd->ps2dev.serio);
677}
678
679/*
680 * atkbd_probe() probes for an AT keyboard on a serio port.
681 */
682
683static int atkbd_probe(struct atkbd *atkbd)
684{
685 struct ps2dev *ps2dev = &atkbd->ps2dev;
686 unsigned char param[2];
687
688/*
689 * Some systems, where the bit-twiddling when testing the io-lines of the
690 * controller may confuse the keyboard need a full reset of the keyboard. On
691 * these systems the BIOS also usually doesn't do it for us.
692 */
693
694 if (atkbd_reset)
695 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT))
696 dev_warn(&ps2dev->serio->dev,
697 "keyboard reset failed on %s\n",
698 ps2dev->serio->phys);
699
700/*
701 * Then we check the keyboard ID. We should get 0xab83 under normal conditions.
702 * Some keyboards report different values, but the first byte is always 0xab or
703 * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this
704 * should make sure we don't try to set the LEDs on it.
705 */
706
707 param[0] = param[1] = 0xa5; /* initialize with invalid values */
708 if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) {
709
710/*
711 * If the get ID command failed, we check if we can at least set the LEDs on
712 * the keyboard. This should work on every keyboard out there. It also turns
713 * the LEDs off, which we want anyway.
714 */
715 param[0] = 0;
716 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
717 return -1;
718 atkbd->id = 0xabba;
719 return 0;
720 }
721
722 if (!ps2_is_keyboard_id(param[0]))
723 return -1;
724
725 atkbd->id = (param[0] << 8) | param[1];
726
727 if (atkbd->id == 0xaca1 && atkbd->translated) {
728 dev_err(&ps2dev->serio->dev,
729 "NCD terminal keyboards are only supported on non-translating controlelrs. "
730 "Use i8042.direct=1 to disable translation.\n");
731 return -1;
732 }
733
734 return 0;
735}
736
737/*
738 * atkbd_select_set checks if a keyboard has a working Set 3 support, and
739 * sets it into that. Unfortunately there are keyboards that can be switched
740 * to Set 3, but don't work well in that (BTC Multimedia ...)
741 */
742
743static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra)
744{
745 struct ps2dev *ps2dev = &atkbd->ps2dev;
746 unsigned char param[2];
747
748 atkbd->extra = false;
749/*
750 * For known special keyboards we can go ahead and set the correct set.
751 * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and
752 * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards.
753 */
754
755 if (atkbd->translated)
756 return 2;
757
758 if (atkbd->id == 0xaca1) {
759 param[0] = 3;
760 ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET);
761 return 3;
762 }
763
764 if (allow_extra) {
765 param[0] = 0x71;
766 if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) {
767 atkbd->extra = true;
768 return 2;
769 }
770 }
771
772 if (atkbd_terminal) {
773 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MB);
774 return 3;
775 }
776
777 if (target_set != 3)
778 return 2;
779
780 if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) {
781 atkbd->id = param[0] << 8 | param[1];
782 return 2;
783 }
784
785 param[0] = 3;
786 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
787 return 2;
788
789 param[0] = 0;
790 if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET))
791 return 2;
792
793 if (param[0] != 3) {
794 param[0] = 2;
795 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
796 return 2;
797 }
798
799 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR);
800
801 return 3;
802}
803
804static int atkbd_reset_state(struct atkbd *atkbd)
805{
806 struct ps2dev *ps2dev = &atkbd->ps2dev;
807 unsigned char param[1];
808
809/*
810 * Set the LEDs to a predefined state (all off).
811 */
812
813 param[0] = 0;
814 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
815 return -1;
816
817/*
818 * Set autorepeat to fastest possible.
819 */
820
821 param[0] = 0;
822 if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP))
823 return -1;
824
825 return 0;
826}
827
828static int atkbd_activate(struct atkbd *atkbd)
829{
830 struct ps2dev *ps2dev = &atkbd->ps2dev;
831
832/*
833 * Enable the keyboard to receive keystrokes.
834 */
835
836 if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) {
837 dev_err(&ps2dev->serio->dev,
838 "Failed to enable keyboard on %s\n",
839 ps2dev->serio->phys);
840 return -1;
841 }
842
843 return 0;
844}
845
846/*
847 * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a
848 * reboot.
849 */
850
851static void atkbd_cleanup(struct serio *serio)
852{
853 struct atkbd *atkbd = serio_get_drvdata(serio);
854
855 atkbd_disable(atkbd);
856 ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_DEF);
857}
858
859
860/*
861 * atkbd_disconnect() closes and frees.
862 */
863
864static void atkbd_disconnect(struct serio *serio)
865{
866 struct atkbd *atkbd = serio_get_drvdata(serio);
867
868 sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
869
870 atkbd_disable(atkbd);
871
872 input_unregister_device(atkbd->dev);
873
874 /*
875 * Make sure we don't have a command in flight.
876 * Note that since atkbd->enabled is false event work will keep
877 * rescheduling itself until it gets canceled and will not try
878 * accessing freed input device or serio port.
879 */
880 cancel_delayed_work_sync(&atkbd->event_work);
881
882 serio_close(serio);
883 serio_set_drvdata(serio, NULL);
884 kfree(atkbd);
885}
886
887/*
888 * generate release events for the keycodes given in data
889 */
890static void atkbd_apply_forced_release_keylist(struct atkbd* atkbd,
891 const void *data)
892{
893 const unsigned int *keys = data;
894 unsigned int i;
895
896 if (atkbd->set == 2)
897 for (i = 0; keys[i] != -1U; i++)
898 __set_bit(keys[i], atkbd->force_release_mask);
899}
900
901/*
902 * Most special keys (Fn+F?) on Dell laptops do not generate release
903 * events so we have to do it ourselves.
904 */
905static unsigned int atkbd_dell_laptop_forced_release_keys[] = {
906 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8f, 0x93, -1U
907};
908
909/*
910 * Perform fixup for HP system that doesn't generate release
911 * for its video switch
912 */
913static unsigned int atkbd_hp_forced_release_keys[] = {
914 0x94, -1U
915};
916
917/*
918 * Samsung NC10,NC20 with Fn+F? key release not working
919 */
920static unsigned int atkbd_samsung_forced_release_keys[] = {
921 0x82, 0x83, 0x84, 0x86, 0x88, 0x89, 0xb3, 0xf7, 0xf9, -1U
922};
923
924/*
925 * Amilo Pi 3525 key release for Fn+Volume keys not working
926 */
927static unsigned int atkbd_amilo_pi3525_forced_release_keys[] = {
928 0x20, 0xa0, 0x2e, 0xae, 0x30, 0xb0, -1U
929};
930
931/*
932 * Amilo Xi 3650 key release for light touch bar not working
933 */
934static unsigned int atkbd_amilo_xi3650_forced_release_keys[] = {
935 0x67, 0xed, 0x90, 0xa2, 0x99, 0xa4, 0xae, 0xb0, -1U
936};
937
938/*
939 * Soltech TA12 system with broken key release on volume keys and mute key
940 */
941static unsigned int atkdb_soltech_ta12_forced_release_keys[] = {
942 0xa0, 0xae, 0xb0, -1U
943};
944
945/*
946 * Many notebooks don't send key release event for volume up/down
947 * keys, with key list below common among them
948 */
949static unsigned int atkbd_volume_forced_release_keys[] = {
950 0xae, 0xb0, -1U
951};
952
953/*
954 * OQO 01+ multimedia keys (64--66) generate e0 6x upon release whereas
955 * they should be generating e4-e6 (0x80 | code).
956 */
957static unsigned int atkbd_oqo_01plus_scancode_fixup(struct atkbd *atkbd,
958 unsigned int code)
959{
960 if (atkbd->translated && atkbd->emul == 1 &&
961 (code == 0x64 || code == 0x65 || code == 0x66)) {
962 atkbd->emul = 0;
963 code |= 0x80;
964 }
965
966 return code;
967}
968
969/*
970 * atkbd_set_keycode_table() initializes keyboard's keycode table
971 * according to the selected scancode set
972 */
973
974static void atkbd_set_keycode_table(struct atkbd *atkbd)
975{
976 unsigned int scancode;
977 int i, j;
978
979 memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
980 bitmap_zero(atkbd->force_release_mask, ATKBD_KEYMAP_SIZE);
981
982 if (atkbd->translated) {
983 for (i = 0; i < 128; i++) {
984 scancode = atkbd_unxlate_table[i];
985 atkbd->keycode[i] = atkbd_set2_keycode[scancode];
986 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80];
987 if (atkbd->scroll)
988 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
989 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2)
990 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
991 }
992 } else if (atkbd->set == 3) {
993 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
994 } else {
995 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
996
997 if (atkbd->scroll)
998 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) {
999 scancode = atkbd_scroll_keys[i].set2;
1000 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode;
1001 }
1002 }
1003
1004/*
1005 * HANGEUL and HANJA keys do not send release events so we need to
1006 * generate such events ourselves
1007 */
1008 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL);
1009 atkbd->keycode[scancode] = KEY_HANGEUL;
1010 __set_bit(scancode, atkbd->force_release_mask);
1011
1012 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA);
1013 atkbd->keycode[scancode] = KEY_HANJA;
1014 __set_bit(scancode, atkbd->force_release_mask);
1015
1016/*
1017 * Perform additional fixups
1018 */
1019 if (atkbd_platform_fixup)
1020 atkbd_platform_fixup(atkbd, atkbd_platform_fixup_data);
1021}
1022
1023/*
1024 * atkbd_set_device_attrs() sets up keyboard's input device structure
1025 */
1026
1027static void atkbd_set_device_attrs(struct atkbd *atkbd)
1028{
1029 struct input_dev *input_dev = atkbd->dev;
1030 int i;
1031
1032 if (atkbd->extra)
1033 snprintf(atkbd->name, sizeof(atkbd->name),
1034 "AT Set 2 Extra keyboard");
1035 else
1036 snprintf(atkbd->name, sizeof(atkbd->name),
1037 "AT %s Set %d keyboard",
1038 atkbd->translated ? "Translated" : "Raw", atkbd->set);
1039
1040 snprintf(atkbd->phys, sizeof(atkbd->phys),
1041 "%s/input0", atkbd->ps2dev.serio->phys);
1042
1043 input_dev->name = atkbd->name;
1044 input_dev->phys = atkbd->phys;
1045 input_dev->id.bustype = BUS_I8042;
1046 input_dev->id.vendor = 0x0001;
1047 input_dev->id.product = atkbd->translated ? 1 : atkbd->set;
1048 input_dev->id.version = atkbd->id;
1049 input_dev->event = atkbd_event;
1050 input_dev->dev.parent = &atkbd->ps2dev.serio->dev;
1051
1052 input_set_drvdata(input_dev, atkbd);
1053
1054 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
1055 BIT_MASK(EV_MSC);
1056
1057 if (atkbd->write) {
1058 input_dev->evbit[0] |= BIT_MASK(EV_LED);
1059 input_dev->ledbit[0] = BIT_MASK(LED_NUML) |
1060 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL);
1061 }
1062
1063 if (atkbd->extra)
1064 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) |
1065 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) |
1066 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC);
1067
1068 if (!atkbd->softrepeat) {
1069 input_dev->rep[REP_DELAY] = 250;
1070 input_dev->rep[REP_PERIOD] = 33;
1071 }
1072
1073 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) :
1074 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN);
1075
1076 if (atkbd->scroll) {
1077 input_dev->evbit[0] |= BIT_MASK(EV_REL);
1078 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) |
1079 BIT_MASK(REL_HWHEEL);
1080 __set_bit(BTN_MIDDLE, input_dev->keybit);
1081 }
1082
1083 input_dev->keycode = atkbd->keycode;
1084 input_dev->keycodesize = sizeof(unsigned short);
1085 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
1086
1087 for (i = 0; i < ATKBD_KEYMAP_SIZE; i++) {
1088 if (atkbd->keycode[i] != KEY_RESERVED &&
1089 atkbd->keycode[i] != ATKBD_KEY_NULL &&
1090 atkbd->keycode[i] < ATKBD_SPECIAL) {
1091 __set_bit(atkbd->keycode[i], input_dev->keybit);
1092 }
1093 }
1094}
1095
1096/*
1097 * atkbd_connect() is called when the serio module finds an interface
1098 * that isn't handled yet by an appropriate device driver. We check if
1099 * there is an AT keyboard out there and if yes, we register ourselves
1100 * to the input module.
1101 */
1102
1103static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
1104{
1105 struct atkbd *atkbd;
1106 struct input_dev *dev;
1107 int err = -ENOMEM;
1108
1109 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL);
1110 dev = input_allocate_device();
1111 if (!atkbd || !dev)
1112 goto fail1;
1113
1114 atkbd->dev = dev;
1115 ps2_init(&atkbd->ps2dev, serio);
1116 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work);
1117 mutex_init(&atkbd->mutex);
1118
1119 switch (serio->id.type) {
1120
1121 case SERIO_8042_XL:
1122 atkbd->translated = true;
1123 /* Fall through */
1124
1125 case SERIO_8042:
1126 if (serio->write)
1127 atkbd->write = true;
1128 break;
1129 }
1130
1131 atkbd->softraw = atkbd_softraw;
1132 atkbd->softrepeat = atkbd_softrepeat;
1133 atkbd->scroll = atkbd_scroll;
1134
1135 if (atkbd->softrepeat)
1136 atkbd->softraw = true;
1137
1138 serio_set_drvdata(serio, atkbd);
1139
1140 err = serio_open(serio, drv);
1141 if (err)
1142 goto fail2;
1143
1144 if (atkbd->write) {
1145
1146 if (atkbd_probe(atkbd)) {
1147 err = -ENODEV;
1148 goto fail3;
1149 }
1150
1151 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
1152 atkbd_reset_state(atkbd);
1153 atkbd_activate(atkbd);
1154
1155 } else {
1156 atkbd->set = 2;
1157 atkbd->id = 0xab00;
1158 }
1159
1160 atkbd_set_keycode_table(atkbd);
1161 atkbd_set_device_attrs(atkbd);
1162
1163 err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group);
1164 if (err)
1165 goto fail3;
1166
1167 atkbd_enable(atkbd);
1168
1169 err = input_register_device(atkbd->dev);
1170 if (err)
1171 goto fail4;
1172
1173 return 0;
1174
1175 fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
1176 fail3: serio_close(serio);
1177 fail2: serio_set_drvdata(serio, NULL);
1178 fail1: input_free_device(dev);
1179 kfree(atkbd);
1180 return err;
1181}
1182
1183/*
1184 * atkbd_reconnect() tries to restore keyboard into a sane state and is
1185 * most likely called on resume.
1186 */
1187
1188static int atkbd_reconnect(struct serio *serio)
1189{
1190 struct atkbd *atkbd = serio_get_drvdata(serio);
1191 struct serio_driver *drv = serio->drv;
1192 int retval = -1;
1193
1194 if (!atkbd || !drv) {
1195 dev_dbg(&serio->dev,
1196 "reconnect request, but serio is disconnected, ignoring...\n");
1197 return -1;
1198 }
1199
1200 mutex_lock(&atkbd->mutex);
1201
1202 atkbd_disable(atkbd);
1203
1204 if (atkbd->write) {
1205 if (atkbd_probe(atkbd))
1206 goto out;
1207
1208 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
1209 goto out;
1210
1211 atkbd_activate(atkbd);
1212
1213 /*
1214 * Restore LED state and repeat rate. While input core
1215 * will do this for us at resume time reconnect may happen
1216 * because user requested it via sysfs or simply because
1217 * keyboard was unplugged and plugged in again so we need
1218 * to do it ourselves here.
1219 */
1220 atkbd_set_leds(atkbd);
1221 if (!atkbd->softrepeat)
1222 atkbd_set_repeat_rate(atkbd);
1223
1224 }
1225
1226 atkbd_enable(atkbd);
1227 retval = 0;
1228
1229 out:
1230 mutex_unlock(&atkbd->mutex);
1231 return retval;
1232}
1233
1234static struct serio_device_id atkbd_serio_ids[] = {
1235 {
1236 .type = SERIO_8042,
1237 .proto = SERIO_ANY,
1238 .id = SERIO_ANY,
1239 .extra = SERIO_ANY,
1240 },
1241 {
1242 .type = SERIO_8042_XL,
1243 .proto = SERIO_ANY,
1244 .id = SERIO_ANY,
1245 .extra = SERIO_ANY,
1246 },
1247 {
1248 .type = SERIO_RS232,
1249 .proto = SERIO_PS2SER,
1250 .id = SERIO_ANY,
1251 .extra = SERIO_ANY,
1252 },
1253 { 0 }
1254};
1255
1256MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
1257
1258static struct serio_driver atkbd_drv = {
1259 .driver = {
1260 .name = "atkbd",
1261 },
1262 .description = DRIVER_DESC,
1263 .id_table = atkbd_serio_ids,
1264 .interrupt = atkbd_interrupt,
1265 .connect = atkbd_connect,
1266 .reconnect = atkbd_reconnect,
1267 .disconnect = atkbd_disconnect,
1268 .cleanup = atkbd_cleanup,
1269};
1270
1271static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
1272 ssize_t (*handler)(struct atkbd *, char *))
1273{
1274 struct serio *serio = to_serio_port(dev);
1275 struct atkbd *atkbd = serio_get_drvdata(serio);
1276
1277 return handler(atkbd, buf);
1278}
1279
1280static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
1281 ssize_t (*handler)(struct atkbd *, const char *, size_t))
1282{
1283 struct serio *serio = to_serio_port(dev);
1284 struct atkbd *atkbd = serio_get_drvdata(serio);
1285 int retval;
1286
1287 retval = mutex_lock_interruptible(&atkbd->mutex);
1288 if (retval)
1289 return retval;
1290
1291 atkbd_disable(atkbd);
1292 retval = handler(atkbd, buf, count);
1293 atkbd_enable(atkbd);
1294
1295 mutex_unlock(&atkbd->mutex);
1296
1297 return retval;
1298}
1299
1300static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
1301{
1302 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
1303}
1304
1305static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
1306{
1307 struct input_dev *old_dev, *new_dev;
1308 unsigned long value;
1309 int err;
1310 bool old_extra;
1311 unsigned char old_set;
1312
1313 if (!atkbd->write)
1314 return -EIO;
1315
1316 if (strict_strtoul(buf, 10, &value) || value > 1)
1317 return -EINVAL;
1318
1319 if (atkbd->extra != value) {
1320 /*
1321 * Since device's properties will change we need to
1322 * unregister old device. But allocate and register
1323 * new one first to make sure we have it.
1324 */
1325 old_dev = atkbd->dev;
1326 old_extra = atkbd->extra;
1327 old_set = atkbd->set;
1328
1329 new_dev = input_allocate_device();
1330 if (!new_dev)
1331 return -ENOMEM;
1332
1333 atkbd->dev = new_dev;
1334 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
1335 atkbd_reset_state(atkbd);
1336 atkbd_activate(atkbd);
1337 atkbd_set_keycode_table(atkbd);
1338 atkbd_set_device_attrs(atkbd);
1339
1340 err = input_register_device(atkbd->dev);
1341 if (err) {
1342 input_free_device(new_dev);
1343
1344 atkbd->dev = old_dev;
1345 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1346 atkbd_set_keycode_table(atkbd);
1347 atkbd_set_device_attrs(atkbd);
1348
1349 return err;
1350 }
1351 input_unregister_device(old_dev);
1352
1353 }
1354 return count;
1355}
1356
1357static ssize_t atkbd_show_force_release(struct atkbd *atkbd, char *buf)
1358{
1359 size_t len = bitmap_scnlistprintf(buf, PAGE_SIZE - 2,
1360 atkbd->force_release_mask, ATKBD_KEYMAP_SIZE);
1361
1362 buf[len++] = '\n';
1363 buf[len] = '\0';
1364
1365 return len;
1366}
1367
1368static ssize_t atkbd_set_force_release(struct atkbd *atkbd,
1369 const char *buf, size_t count)
1370{
1371 /* 64 bytes on stack should be acceptable */
1372 DECLARE_BITMAP(new_mask, ATKBD_KEYMAP_SIZE);
1373 int err;
1374
1375 err = bitmap_parselist(buf, new_mask, ATKBD_KEYMAP_SIZE);
1376 if (err)
1377 return err;
1378
1379 memcpy(atkbd->force_release_mask, new_mask, sizeof(atkbd->force_release_mask));
1380 return count;
1381}
1382
1383
1384static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
1385{
1386 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
1387}
1388
1389static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
1390{
1391 struct input_dev *old_dev, *new_dev;
1392 unsigned long value;
1393 int err;
1394 bool old_scroll;
1395
1396 if (strict_strtoul(buf, 10, &value) || value > 1)
1397 return -EINVAL;
1398
1399 if (atkbd->scroll != value) {
1400 old_dev = atkbd->dev;
1401 old_scroll = atkbd->scroll;
1402
1403 new_dev = input_allocate_device();
1404 if (!new_dev)
1405 return -ENOMEM;
1406
1407 atkbd->dev = new_dev;
1408 atkbd->scroll = value;
1409 atkbd_set_keycode_table(atkbd);
1410 atkbd_set_device_attrs(atkbd);
1411
1412 err = input_register_device(atkbd->dev);
1413 if (err) {
1414 input_free_device(new_dev);
1415
1416 atkbd->scroll = old_scroll;
1417 atkbd->dev = old_dev;
1418 atkbd_set_keycode_table(atkbd);
1419 atkbd_set_device_attrs(atkbd);
1420
1421 return err;
1422 }
1423 input_unregister_device(old_dev);
1424 }
1425 return count;
1426}
1427
1428static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
1429{
1430 return sprintf(buf, "%d\n", atkbd->set);
1431}
1432
1433static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
1434{
1435 struct input_dev *old_dev, *new_dev;
1436 unsigned long value;
1437 int err;
1438 unsigned char old_set;
1439 bool old_extra;
1440
1441 if (!atkbd->write)
1442 return -EIO;
1443
1444 if (strict_strtoul(buf, 10, &value) || (value != 2 && value != 3))
1445 return -EINVAL;
1446
1447 if (atkbd->set != value) {
1448 old_dev = atkbd->dev;
1449 old_extra = atkbd->extra;
1450 old_set = atkbd->set;
1451
1452 new_dev = input_allocate_device();
1453 if (!new_dev)
1454 return -ENOMEM;
1455
1456 atkbd->dev = new_dev;
1457 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra);
1458 atkbd_reset_state(atkbd);
1459 atkbd_activate(atkbd);
1460 atkbd_set_keycode_table(atkbd);
1461 atkbd_set_device_attrs(atkbd);
1462
1463 err = input_register_device(atkbd->dev);
1464 if (err) {
1465 input_free_device(new_dev);
1466
1467 atkbd->dev = old_dev;
1468 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1469 atkbd_set_keycode_table(atkbd);
1470 atkbd_set_device_attrs(atkbd);
1471
1472 return err;
1473 }
1474 input_unregister_device(old_dev);
1475 }
1476 return count;
1477}
1478
1479static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
1480{
1481 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
1482}
1483
1484static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
1485{
1486 struct input_dev *old_dev, *new_dev;
1487 unsigned long value;
1488 int err;
1489 bool old_softrepeat, old_softraw;
1490
1491 if (!atkbd->write)
1492 return -EIO;
1493
1494 if (strict_strtoul(buf, 10, &value) || value > 1)
1495 return -EINVAL;
1496
1497 if (atkbd->softrepeat != value) {
1498 old_dev = atkbd->dev;
1499 old_softrepeat = atkbd->softrepeat;
1500 old_softraw = atkbd->softraw;
1501
1502 new_dev = input_allocate_device();
1503 if (!new_dev)
1504 return -ENOMEM;
1505
1506 atkbd->dev = new_dev;
1507 atkbd->softrepeat = value;
1508 if (atkbd->softrepeat)
1509 atkbd->softraw = true;
1510 atkbd_set_device_attrs(atkbd);
1511
1512 err = input_register_device(atkbd->dev);
1513 if (err) {
1514 input_free_device(new_dev);
1515
1516 atkbd->dev = old_dev;
1517 atkbd->softrepeat = old_softrepeat;
1518 atkbd->softraw = old_softraw;
1519 atkbd_set_device_attrs(atkbd);
1520
1521 return err;
1522 }
1523 input_unregister_device(old_dev);
1524 }
1525 return count;
1526}
1527
1528
1529static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
1530{
1531 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
1532}
1533
1534static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
1535{
1536 struct input_dev *old_dev, *new_dev;
1537 unsigned long value;
1538 int err;
1539 bool old_softraw;
1540
1541 if (strict_strtoul(buf, 10, &value) || value > 1)
1542 return -EINVAL;
1543
1544 if (atkbd->softraw != value) {
1545 old_dev = atkbd->dev;
1546 old_softraw = atkbd->softraw;
1547
1548 new_dev = input_allocate_device();
1549 if (!new_dev)
1550 return -ENOMEM;
1551
1552 atkbd->dev = new_dev;
1553 atkbd->softraw = value;
1554 atkbd_set_device_attrs(atkbd);
1555
1556 err = input_register_device(atkbd->dev);
1557 if (err) {
1558 input_free_device(new_dev);
1559
1560 atkbd->dev = old_dev;
1561 atkbd->softraw = old_softraw;
1562 atkbd_set_device_attrs(atkbd);
1563
1564 return err;
1565 }
1566 input_unregister_device(old_dev);
1567 }
1568 return count;
1569}
1570
1571static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
1572{
1573 return sprintf(buf, "%lu\n", atkbd->err_count);
1574}
1575
1576static int __init atkbd_setup_forced_release(const struct dmi_system_id *id)
1577{
1578 atkbd_platform_fixup = atkbd_apply_forced_release_keylist;
1579 atkbd_platform_fixup_data = id->driver_data;
1580
1581 return 1;
1582}
1583
1584static int __init atkbd_setup_scancode_fixup(const struct dmi_system_id *id)
1585{
1586 atkbd_platform_scancode_fixup = id->driver_data;
1587
1588 return 1;
1589}
1590
1591static const struct dmi_system_id atkbd_dmi_quirk_table[] __initconst = {
1592 {
1593 .matches = {
1594 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
1595 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1596 },
1597 .callback = atkbd_setup_forced_release,
1598 .driver_data = atkbd_dell_laptop_forced_release_keys,
1599 },
1600 {
1601 .matches = {
1602 DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
1603 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1604 },
1605 .callback = atkbd_setup_forced_release,
1606 .driver_data = atkbd_dell_laptop_forced_release_keys,
1607 },
1608 {
1609 .matches = {
1610 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1611 DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"),
1612 },
1613 .callback = atkbd_setup_forced_release,
1614 .driver_data = atkbd_hp_forced_release_keys,
1615 },
1616 {
1617 .matches = {
1618 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1619 DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion ZV6100"),
1620 },
1621 .callback = atkbd_setup_forced_release,
1622 .driver_data = atkbd_volume_forced_release_keys,
1623 },
1624 {
1625 .matches = {
1626 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1627 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4000"),
1628 },
1629 .callback = atkbd_setup_forced_release,
1630 .driver_data = atkbd_volume_forced_release_keys,
1631 },
1632 {
1633 .matches = {
1634 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1635 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4100"),
1636 },
1637 .callback = atkbd_setup_forced_release,
1638 .driver_data = atkbd_volume_forced_release_keys,
1639 },
1640 {
1641 .matches = {
1642 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1643 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4200"),
1644 },
1645 .callback = atkbd_setup_forced_release,
1646 .driver_data = atkbd_volume_forced_release_keys,
1647 },
1648 {
1649 /* Inventec Symphony */
1650 .matches = {
1651 DMI_MATCH(DMI_SYS_VENDOR, "INVENTEC"),
1652 DMI_MATCH(DMI_PRODUCT_NAME, "SYMPHONY 6.0/7.0"),
1653 },
1654 .callback = atkbd_setup_forced_release,
1655 .driver_data = atkbd_volume_forced_release_keys,
1656 },
1657 {
1658 /* Samsung NC10 */
1659 .matches = {
1660 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1661 DMI_MATCH(DMI_PRODUCT_NAME, "NC10"),
1662 },
1663 .callback = atkbd_setup_forced_release,
1664 .driver_data = atkbd_samsung_forced_release_keys,
1665 },
1666 {
1667 /* Samsung NC20 */
1668 .matches = {
1669 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1670 DMI_MATCH(DMI_PRODUCT_NAME, "NC20"),
1671 },
1672 .callback = atkbd_setup_forced_release,
1673 .driver_data = atkbd_samsung_forced_release_keys,
1674 },
1675 {
1676 /* Samsung SQ45S70S */
1677 .matches = {
1678 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1679 DMI_MATCH(DMI_PRODUCT_NAME, "SQ45S70S"),
1680 },
1681 .callback = atkbd_setup_forced_release,
1682 .driver_data = atkbd_samsung_forced_release_keys,
1683 },
1684 {
1685 /* Fujitsu Amilo PA 1510 */
1686 .matches = {
1687 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1688 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 1510"),
1689 },
1690 .callback = atkbd_setup_forced_release,
1691 .driver_data = atkbd_volume_forced_release_keys,
1692 },
1693 {
1694 /* Fujitsu Amilo Pi 3525 */
1695 .matches = {
1696 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1697 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 3525"),
1698 },
1699 .callback = atkbd_setup_forced_release,
1700 .driver_data = atkbd_amilo_pi3525_forced_release_keys,
1701 },
1702 {
1703 /* Fujitsu Amilo Xi 3650 */
1704 .matches = {
1705 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1706 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 3650"),
1707 },
1708 .callback = atkbd_setup_forced_release,
1709 .driver_data = atkbd_amilo_xi3650_forced_release_keys,
1710 },
1711 {
1712 .matches = {
1713 DMI_MATCH(DMI_SYS_VENDOR, "Soltech Corporation"),
1714 DMI_MATCH(DMI_PRODUCT_NAME, "TA12"),
1715 },
1716 .callback = atkbd_setup_forced_release,
1717 .driver_data = atkdb_soltech_ta12_forced_release_keys,
1718 },
1719 {
1720 /* OQO Model 01+ */
1721 .matches = {
1722 DMI_MATCH(DMI_SYS_VENDOR, "OQO"),
1723 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPTO"),
1724 },
1725 .callback = atkbd_setup_scancode_fixup,
1726 .driver_data = atkbd_oqo_01plus_scancode_fixup,
1727 },
1728 { }
1729};
1730
1731static int __init atkbd_init(void)
1732{
1733 dmi_check_system(atkbd_dmi_quirk_table);
1734
1735 return serio_register_driver(&atkbd_drv);
1736}
1737
1738static void __exit atkbd_exit(void)
1739{
1740 serio_unregister_driver(&atkbd_drv);
1741}
1742
1743module_init(atkbd_init);
1744module_exit(atkbd_exit);
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
32MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
33MODULE_DESCRIPTION(DRIVER_DESC);
34MODULE_LICENSE("GPL");
35
36static int atkbd_set = 2;
37module_param_named(set, atkbd_set, int, 0);
38MODULE_PARM_DESC(set, "Select keyboard code set (2 = default, 3 = PS/2 native)");
39
40#if defined(__i386__) || defined(__x86_64__) || defined(__hppa__)
41static bool atkbd_reset;
42#else
43static bool atkbd_reset = true;
44#endif
45module_param_named(reset, atkbd_reset, bool, 0);
46MODULE_PARM_DESC(reset, "Reset keyboard during initialization");
47
48static bool atkbd_softrepeat;
49module_param_named(softrepeat, atkbd_softrepeat, bool, 0);
50MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat");
51
52static bool atkbd_softraw = true;
53module_param_named(softraw, atkbd_softraw, bool, 0);
54MODULE_PARM_DESC(softraw, "Use software generated rawmode");
55
56static bool atkbd_scroll;
57module_param_named(scroll, atkbd_scroll, bool, 0);
58MODULE_PARM_DESC(scroll, "Enable scroll-wheel on MS Office and similar keyboards");
59
60static bool atkbd_extra;
61module_param_named(extra, atkbd_extra, bool, 0);
62MODULE_PARM_DESC(extra, "Enable extra LEDs and keys on IBM RapidAcces, EzKey and similar keyboards");
63
64static bool atkbd_terminal;
65module_param_named(terminal, atkbd_terminal, bool, 0);
66MODULE_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
78static 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
109static 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
125static 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
185static 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
202struct 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 */
245static void (*atkbd_platform_fixup)(struct atkbd *, const void *data);
246static void *atkbd_platform_fixup_data;
247static 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 */
253static bool atkbd_skip_deactivate;
254
255static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
256 ssize_t (*handler)(struct atkbd *, char *));
257static 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) \
260static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
261static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \
262static 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} \
267static 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} \
272static struct device_attribute atkbd_attr_##_name = \
273 __ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name);
274
275ATKBD_DEFINE_ATTR(extra);
276ATKBD_DEFINE_ATTR(force_release);
277ATKBD_DEFINE_ATTR(scroll);
278ATKBD_DEFINE_ATTR(set);
279ATKBD_DEFINE_ATTR(softrepeat);
280ATKBD_DEFINE_ATTR(softraw);
281
282#define ATKBD_DEFINE_RO_ATTR(_name) \
283static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
284static 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} \
289static struct device_attribute atkbd_attr_##_name = \
290 __ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL);
291
292ATKBD_DEFINE_RO_ATTR(err_count);
293ATKBD_DEFINE_RO_ATTR(function_row_physmap);
294
295static 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
307static 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
312static 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
319static 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
333static 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
340static 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 */
349static 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 */
368static 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 */
387static 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 */
406static 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
427static 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
442static 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
583static 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, ¶m, ATKBD_CMD_SETREP);
605}
606
607static 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
638static 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 */
668static 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
687static 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
716static 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
728static 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
735static 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
758static 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
769static 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 */
798static bool atkbd_skip_getid(struct atkbd *atkbd)
799{
800 return atkbd->translated && atkbd_is_portable_device();
801}
802#else
803static 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
810static 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 goto deactivate_kbd;
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
866deactivate_kbd:
867/*
868 * Make sure nothing is coming from the keyboard and disturbs our
869 * internal state.
870 */
871 if (!atkbd_skip_deactivate)
872 atkbd_deactivate(atkbd);
873
874 return 0;
875}
876
877/*
878 * atkbd_select_set checks if a keyboard has a working Set 3 support, and
879 * sets it into that. Unfortunately there are keyboards that can be switched
880 * to Set 3, but don't work well in that (BTC Multimedia ...)
881 */
882
883static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra)
884{
885 struct ps2dev *ps2dev = &atkbd->ps2dev;
886 unsigned char param[2];
887
888 atkbd->extra = false;
889/*
890 * For known special keyboards we can go ahead and set the correct set.
891 * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and
892 * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards.
893 */
894
895 if (atkbd->translated)
896 return 2;
897
898 if (atkbd->id == 0xaca1) {
899 param[0] = 3;
900 ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET);
901 return 3;
902 }
903
904 if (allow_extra) {
905 param[0] = 0x71;
906 if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) {
907 atkbd->extra = true;
908 return 2;
909 }
910 }
911
912 if (atkbd_terminal) {
913 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MB);
914 return 3;
915 }
916
917 if (target_set != 3)
918 return 2;
919
920 if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) {
921 atkbd->id = param[0] << 8 | param[1];
922 return 2;
923 }
924
925 param[0] = 3;
926 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
927 return 2;
928
929 param[0] = 0;
930 if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET))
931 return 2;
932
933 if (param[0] != 3) {
934 param[0] = 2;
935 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
936 return 2;
937 }
938
939 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR);
940
941 return 3;
942}
943
944static int atkbd_reset_state(struct atkbd *atkbd)
945{
946 struct ps2dev *ps2dev = &atkbd->ps2dev;
947 unsigned char param[1];
948
949/*
950 * Set the LEDs to a predefined state (all off).
951 */
952
953 param[0] = 0;
954 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
955 return -1;
956
957/*
958 * Set autorepeat to fastest possible.
959 */
960
961 param[0] = 0;
962 if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP))
963 return -1;
964
965 return 0;
966}
967
968/*
969 * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a
970 * reboot.
971 */
972
973static void atkbd_cleanup(struct serio *serio)
974{
975 struct atkbd *atkbd = atkbd_from_serio(serio);
976
977 atkbd_disable(atkbd);
978 ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_DEF);
979}
980
981
982/*
983 * atkbd_disconnect() closes and frees.
984 */
985
986static void atkbd_disconnect(struct serio *serio)
987{
988 struct atkbd *atkbd = atkbd_from_serio(serio);
989
990 atkbd_disable(atkbd);
991
992 input_unregister_device(atkbd->dev);
993
994 /*
995 * Make sure we don't have a command in flight.
996 * Note that since atkbd->enabled is false event work will keep
997 * rescheduling itself until it gets canceled and will not try
998 * accessing freed input device or serio port.
999 */
1000 cancel_delayed_work_sync(&atkbd->event_work);
1001
1002 serio_close(serio);
1003 serio_set_drvdata(serio, NULL);
1004 kfree(atkbd);
1005}
1006
1007/*
1008 * generate release events for the keycodes given in data
1009 */
1010static void atkbd_apply_forced_release_keylist(struct atkbd* atkbd,
1011 const void *data)
1012{
1013 const unsigned int *keys = data;
1014 unsigned int i;
1015
1016 if (atkbd->set == 2)
1017 for (i = 0; keys[i] != -1U; i++)
1018 __set_bit(keys[i], atkbd->force_release_mask);
1019}
1020
1021/*
1022 * Most special keys (Fn+F?) on Dell laptops do not generate release
1023 * events so we have to do it ourselves.
1024 */
1025static unsigned int atkbd_dell_laptop_forced_release_keys[] = {
1026 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8f, 0x93, -1U
1027};
1028
1029/*
1030 * Perform fixup for HP system that doesn't generate release
1031 * for its video switch
1032 */
1033static unsigned int atkbd_hp_forced_release_keys[] = {
1034 0x94, -1U
1035};
1036
1037/*
1038 * Samsung NC10,NC20 with Fn+F? key release not working
1039 */
1040static unsigned int atkbd_samsung_forced_release_keys[] = {
1041 0x82, 0x83, 0x84, 0x86, 0x88, 0x89, 0xb3, 0xf7, 0xf9, -1U
1042};
1043
1044/*
1045 * Amilo Pi 3525 key release for Fn+Volume keys not working
1046 */
1047static unsigned int atkbd_amilo_pi3525_forced_release_keys[] = {
1048 0x20, 0xa0, 0x2e, 0xae, 0x30, 0xb0, -1U
1049};
1050
1051/*
1052 * Amilo Xi 3650 key release for light touch bar not working
1053 */
1054static unsigned int atkbd_amilo_xi3650_forced_release_keys[] = {
1055 0x67, 0xed, 0x90, 0xa2, 0x99, 0xa4, 0xae, 0xb0, -1U
1056};
1057
1058/*
1059 * Soltech TA12 system with broken key release on volume keys and mute key
1060 */
1061static unsigned int atkdb_soltech_ta12_forced_release_keys[] = {
1062 0xa0, 0xae, 0xb0, -1U
1063};
1064
1065/*
1066 * Many notebooks don't send key release event for volume up/down
1067 * keys, with key list below common among them
1068 */
1069static unsigned int atkbd_volume_forced_release_keys[] = {
1070 0xae, 0xb0, -1U
1071};
1072
1073/*
1074 * OQO 01+ multimedia keys (64--66) generate e0 6x upon release whereas
1075 * they should be generating e4-e6 (0x80 | code).
1076 */
1077static unsigned int atkbd_oqo_01plus_scancode_fixup(struct atkbd *atkbd,
1078 unsigned int code)
1079{
1080 if (atkbd->translated && atkbd->emul == 1 &&
1081 (code == 0x64 || code == 0x65 || code == 0x66)) {
1082 atkbd->emul = 0;
1083 code |= 0x80;
1084 }
1085
1086 return code;
1087}
1088
1089static int atkbd_get_keymap_from_fwnode(struct atkbd *atkbd)
1090{
1091 struct device *dev = &atkbd->ps2dev.serio->dev;
1092 int i, n;
1093 u32 *ptr;
1094 u16 scancode, keycode;
1095
1096 /* Parse "linux,keymap" property */
1097 n = device_property_count_u32(dev, "linux,keymap");
1098 if (n <= 0 || n > ATKBD_KEYMAP_SIZE)
1099 return -ENXIO;
1100
1101 ptr = kcalloc(n, sizeof(u32), GFP_KERNEL);
1102 if (!ptr)
1103 return -ENOMEM;
1104
1105 if (device_property_read_u32_array(dev, "linux,keymap", ptr, n)) {
1106 dev_err(dev, "problem parsing FW keymap property\n");
1107 kfree(ptr);
1108 return -EINVAL;
1109 }
1110
1111 memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
1112 for (i = 0; i < n; i++) {
1113 scancode = SCANCODE(ptr[i]);
1114 keycode = KEYCODE(ptr[i]);
1115 atkbd->keycode[scancode] = keycode;
1116 }
1117
1118 kfree(ptr);
1119 return 0;
1120}
1121
1122/*
1123 * atkbd_set_keycode_table() initializes keyboard's keycode table
1124 * according to the selected scancode set
1125 */
1126
1127static void atkbd_set_keycode_table(struct atkbd *atkbd)
1128{
1129 struct device *dev = &atkbd->ps2dev.serio->dev;
1130 unsigned int scancode;
1131 int i, j;
1132
1133 memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
1134 bitmap_zero(atkbd->force_release_mask, ATKBD_KEYMAP_SIZE);
1135
1136 if (!atkbd_get_keymap_from_fwnode(atkbd)) {
1137 dev_dbg(dev, "Using FW keymap\n");
1138 } else if (atkbd->translated) {
1139 for (i = 0; i < 128; i++) {
1140 scancode = atkbd_unxlate_table[i];
1141 atkbd->keycode[i] = atkbd_set2_keycode[scancode];
1142 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80];
1143 if (atkbd->scroll)
1144 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
1145 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2)
1146 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
1147 }
1148 } else if (atkbd->set == 3) {
1149 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
1150 } else {
1151 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
1152
1153 if (atkbd->scroll)
1154 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) {
1155 scancode = atkbd_scroll_keys[i].set2;
1156 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode;
1157 }
1158 }
1159
1160/*
1161 * HANGEUL and HANJA keys do not send release events so we need to
1162 * generate such events ourselves
1163 */
1164 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL);
1165 atkbd->keycode[scancode] = KEY_HANGEUL;
1166 __set_bit(scancode, atkbd->force_release_mask);
1167
1168 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA);
1169 atkbd->keycode[scancode] = KEY_HANJA;
1170 __set_bit(scancode, atkbd->force_release_mask);
1171
1172/*
1173 * Perform additional fixups
1174 */
1175 if (atkbd_platform_fixup)
1176 atkbd_platform_fixup(atkbd, atkbd_platform_fixup_data);
1177}
1178
1179/*
1180 * atkbd_set_device_attrs() sets up keyboard's input device structure
1181 */
1182
1183static void atkbd_set_device_attrs(struct atkbd *atkbd)
1184{
1185 struct input_dev *input_dev = atkbd->dev;
1186 int i;
1187
1188 if (atkbd->extra)
1189 snprintf(atkbd->name, sizeof(atkbd->name),
1190 "AT Set 2 Extra keyboard");
1191 else
1192 snprintf(atkbd->name, sizeof(atkbd->name),
1193 "AT %s Set %d keyboard",
1194 atkbd->translated ? "Translated" : "Raw", atkbd->set);
1195
1196 snprintf(atkbd->phys, sizeof(atkbd->phys),
1197 "%s/input0", atkbd->ps2dev.serio->phys);
1198
1199 input_dev->name = atkbd->name;
1200 input_dev->phys = atkbd->phys;
1201 input_dev->id.bustype = BUS_I8042;
1202 input_dev->id.vendor = 0x0001;
1203 input_dev->id.product = atkbd->translated ? 1 : atkbd->set;
1204 input_dev->id.version = atkbd->id;
1205 input_dev->event = atkbd_event;
1206 input_dev->dev.parent = &atkbd->ps2dev.serio->dev;
1207
1208 input_set_drvdata(input_dev, atkbd);
1209
1210 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
1211 BIT_MASK(EV_MSC);
1212
1213 if (atkbd->write) {
1214 input_dev->evbit[0] |= BIT_MASK(EV_LED);
1215 input_dev->ledbit[0] = BIT_MASK(LED_NUML) |
1216 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL);
1217 }
1218
1219 if (atkbd->extra)
1220 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) |
1221 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) |
1222 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC);
1223
1224 if (!atkbd->softrepeat) {
1225 input_dev->rep[REP_DELAY] = 250;
1226 input_dev->rep[REP_PERIOD] = 33;
1227 }
1228
1229 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) :
1230 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN);
1231
1232 if (atkbd->scroll) {
1233 input_dev->evbit[0] |= BIT_MASK(EV_REL);
1234 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) |
1235 BIT_MASK(REL_HWHEEL);
1236 __set_bit(BTN_MIDDLE, input_dev->keybit);
1237 }
1238
1239 input_dev->keycode = atkbd->keycode;
1240 input_dev->keycodesize = sizeof(unsigned short);
1241 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
1242
1243 for (i = 0; i < ATKBD_KEYMAP_SIZE; i++) {
1244 if (atkbd->keycode[i] != KEY_RESERVED &&
1245 atkbd->keycode[i] != ATKBD_KEY_NULL &&
1246 atkbd->keycode[i] < ATKBD_SPECIAL) {
1247 __set_bit(atkbd->keycode[i], input_dev->keybit);
1248 }
1249 }
1250}
1251
1252static void atkbd_parse_fwnode_data(struct serio *serio)
1253{
1254 struct atkbd *atkbd = atkbd_from_serio(serio);
1255 struct device *dev = &serio->dev;
1256 int n;
1257
1258 /* Parse "function-row-physmap" property */
1259 n = device_property_count_u32(dev, "function-row-physmap");
1260 if (n > 0 && n <= VIVALDI_MAX_FUNCTION_ROW_KEYS &&
1261 !device_property_read_u32_array(dev, "function-row-physmap",
1262 atkbd->vdata.function_row_physmap,
1263 n)) {
1264 atkbd->vdata.num_function_row_keys = n;
1265 dev_dbg(dev, "FW reported %d function-row key locations\n", n);
1266 }
1267}
1268
1269/*
1270 * atkbd_connect() is called when the serio module finds an interface
1271 * that isn't handled yet by an appropriate device driver. We check if
1272 * there is an AT keyboard out there and if yes, we register ourselves
1273 * to the input module.
1274 */
1275
1276static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
1277{
1278 struct atkbd *atkbd;
1279 struct input_dev *dev;
1280 int err = -ENOMEM;
1281
1282 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL);
1283 dev = input_allocate_device();
1284 if (!atkbd || !dev)
1285 goto fail1;
1286
1287 atkbd->dev = dev;
1288 ps2_init(&atkbd->ps2dev, serio,
1289 atkbd_pre_receive_byte, atkbd_receive_byte);
1290 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work);
1291 mutex_init(&atkbd->mutex);
1292
1293 switch (serio->id.type) {
1294
1295 case SERIO_8042_XL:
1296 atkbd->translated = true;
1297 fallthrough;
1298
1299 case SERIO_8042:
1300 if (serio->write)
1301 atkbd->write = true;
1302 break;
1303 }
1304
1305 atkbd->softraw = atkbd_softraw;
1306 atkbd->softrepeat = atkbd_softrepeat;
1307 atkbd->scroll = atkbd_scroll;
1308
1309 if (atkbd->softrepeat)
1310 atkbd->softraw = true;
1311
1312 serio_set_drvdata(serio, atkbd);
1313
1314 err = serio_open(serio, drv);
1315 if (err)
1316 goto fail2;
1317
1318 if (atkbd->write) {
1319
1320 if (atkbd_probe(atkbd)) {
1321 err = -ENODEV;
1322 goto fail3;
1323 }
1324
1325 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
1326 atkbd_reset_state(atkbd);
1327
1328 } else {
1329 atkbd->set = 2;
1330 atkbd->id = 0xab00;
1331 }
1332
1333 atkbd_parse_fwnode_data(serio);
1334
1335 atkbd_set_keycode_table(atkbd);
1336 atkbd_set_device_attrs(atkbd);
1337
1338 atkbd_enable(atkbd);
1339 if (serio->write)
1340 atkbd_activate(atkbd);
1341
1342 err = input_register_device(atkbd->dev);
1343 if (err)
1344 goto fail3;
1345
1346 return 0;
1347
1348 fail3: serio_close(serio);
1349 fail2: serio_set_drvdata(serio, NULL);
1350 fail1: input_free_device(dev);
1351 kfree(atkbd);
1352 return err;
1353}
1354
1355/*
1356 * atkbd_reconnect() tries to restore keyboard into a sane state and is
1357 * most likely called on resume.
1358 */
1359
1360static int atkbd_reconnect(struct serio *serio)
1361{
1362 struct atkbd *atkbd = atkbd_from_serio(serio);
1363 struct serio_driver *drv = serio->drv;
1364 int retval = -1;
1365
1366 if (!atkbd || !drv) {
1367 dev_dbg(&serio->dev,
1368 "reconnect request, but serio is disconnected, ignoring...\n");
1369 return -1;
1370 }
1371
1372 mutex_lock(&atkbd->mutex);
1373
1374 atkbd_disable(atkbd);
1375
1376 if (atkbd->write) {
1377 if (atkbd_probe(atkbd))
1378 goto out;
1379
1380 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
1381 goto out;
1382
1383 /*
1384 * Restore LED state and repeat rate. While input core
1385 * will do this for us at resume time reconnect may happen
1386 * because user requested it via sysfs or simply because
1387 * keyboard was unplugged and plugged in again so we need
1388 * to do it ourselves here.
1389 */
1390 atkbd_set_leds(atkbd);
1391 if (!atkbd->softrepeat)
1392 atkbd_set_repeat_rate(atkbd);
1393
1394 }
1395
1396 /*
1397 * Reset our state machine in case reconnect happened in the middle
1398 * of multi-byte scancode.
1399 */
1400 atkbd->xl_bit = 0;
1401 atkbd->emul = 0;
1402
1403 atkbd_enable(atkbd);
1404 if (atkbd->write)
1405 atkbd_activate(atkbd);
1406
1407 retval = 0;
1408
1409 out:
1410 mutex_unlock(&atkbd->mutex);
1411 return retval;
1412}
1413
1414static const struct serio_device_id atkbd_serio_ids[] = {
1415 {
1416 .type = SERIO_8042,
1417 .proto = SERIO_ANY,
1418 .id = SERIO_ANY,
1419 .extra = SERIO_ANY,
1420 },
1421 {
1422 .type = SERIO_8042_XL,
1423 .proto = SERIO_ANY,
1424 .id = SERIO_ANY,
1425 .extra = SERIO_ANY,
1426 },
1427 {
1428 .type = SERIO_RS232,
1429 .proto = SERIO_PS2SER,
1430 .id = SERIO_ANY,
1431 .extra = SERIO_ANY,
1432 },
1433 { 0 }
1434};
1435
1436MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
1437
1438static struct serio_driver atkbd_drv = {
1439 .driver = {
1440 .name = "atkbd",
1441 .dev_groups = atkbd_attribute_groups,
1442 },
1443 .description = DRIVER_DESC,
1444 .id_table = atkbd_serio_ids,
1445 .interrupt = ps2_interrupt,
1446 .connect = atkbd_connect,
1447 .reconnect = atkbd_reconnect,
1448 .disconnect = atkbd_disconnect,
1449 .cleanup = atkbd_cleanup,
1450};
1451
1452static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
1453 ssize_t (*handler)(struct atkbd *, char *))
1454{
1455 struct serio *serio = to_serio_port(dev);
1456 struct atkbd *atkbd = atkbd_from_serio(serio);
1457
1458 return handler(atkbd, buf);
1459}
1460
1461static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
1462 ssize_t (*handler)(struct atkbd *, const char *, size_t))
1463{
1464 struct serio *serio = to_serio_port(dev);
1465 struct atkbd *atkbd = atkbd_from_serio(serio);
1466 int retval;
1467
1468 retval = mutex_lock_interruptible(&atkbd->mutex);
1469 if (retval)
1470 return retval;
1471
1472 atkbd_disable(atkbd);
1473 retval = handler(atkbd, buf, count);
1474 atkbd_enable(atkbd);
1475
1476 mutex_unlock(&atkbd->mutex);
1477
1478 return retval;
1479}
1480
1481static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
1482{
1483 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
1484}
1485
1486static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
1487{
1488 struct input_dev *old_dev, *new_dev;
1489 unsigned int value;
1490 int err;
1491 bool old_extra;
1492 unsigned char old_set;
1493
1494 if (!atkbd->write)
1495 return -EIO;
1496
1497 err = kstrtouint(buf, 10, &value);
1498 if (err)
1499 return err;
1500
1501 if (value > 1)
1502 return -EINVAL;
1503
1504 if (atkbd->extra != value) {
1505 /*
1506 * Since device's properties will change we need to
1507 * unregister old device. But allocate and register
1508 * new one first to make sure we have it.
1509 */
1510 old_dev = atkbd->dev;
1511 old_extra = atkbd->extra;
1512 old_set = atkbd->set;
1513
1514 new_dev = input_allocate_device();
1515 if (!new_dev)
1516 return -ENOMEM;
1517
1518 atkbd->dev = new_dev;
1519 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
1520 atkbd_reset_state(atkbd);
1521 atkbd_activate(atkbd);
1522 atkbd_set_keycode_table(atkbd);
1523 atkbd_set_device_attrs(atkbd);
1524
1525 err = input_register_device(atkbd->dev);
1526 if (err) {
1527 input_free_device(new_dev);
1528
1529 atkbd->dev = old_dev;
1530 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1531 atkbd_set_keycode_table(atkbd);
1532 atkbd_set_device_attrs(atkbd);
1533
1534 return err;
1535 }
1536 input_unregister_device(old_dev);
1537
1538 }
1539 return count;
1540}
1541
1542static ssize_t atkbd_show_force_release(struct atkbd *atkbd, char *buf)
1543{
1544 size_t len = scnprintf(buf, PAGE_SIZE - 1, "%*pbl",
1545 ATKBD_KEYMAP_SIZE, atkbd->force_release_mask);
1546
1547 buf[len++] = '\n';
1548 buf[len] = '\0';
1549
1550 return len;
1551}
1552
1553static ssize_t atkbd_set_force_release(struct atkbd *atkbd,
1554 const char *buf, size_t count)
1555{
1556 /* 64 bytes on stack should be acceptable */
1557 DECLARE_BITMAP(new_mask, ATKBD_KEYMAP_SIZE);
1558 int err;
1559
1560 err = bitmap_parselist(buf, new_mask, ATKBD_KEYMAP_SIZE);
1561 if (err)
1562 return err;
1563
1564 memcpy(atkbd->force_release_mask, new_mask, sizeof(atkbd->force_release_mask));
1565 return count;
1566}
1567
1568
1569static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
1570{
1571 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
1572}
1573
1574static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
1575{
1576 struct input_dev *old_dev, *new_dev;
1577 unsigned int value;
1578 int err;
1579 bool old_scroll;
1580
1581 err = kstrtouint(buf, 10, &value);
1582 if (err)
1583 return err;
1584
1585 if (value > 1)
1586 return -EINVAL;
1587
1588 if (atkbd->scroll != value) {
1589 old_dev = atkbd->dev;
1590 old_scroll = atkbd->scroll;
1591
1592 new_dev = input_allocate_device();
1593 if (!new_dev)
1594 return -ENOMEM;
1595
1596 atkbd->dev = new_dev;
1597 atkbd->scroll = value;
1598 atkbd_set_keycode_table(atkbd);
1599 atkbd_set_device_attrs(atkbd);
1600
1601 err = input_register_device(atkbd->dev);
1602 if (err) {
1603 input_free_device(new_dev);
1604
1605 atkbd->scroll = old_scroll;
1606 atkbd->dev = old_dev;
1607 atkbd_set_keycode_table(atkbd);
1608 atkbd_set_device_attrs(atkbd);
1609
1610 return err;
1611 }
1612 input_unregister_device(old_dev);
1613 }
1614 return count;
1615}
1616
1617static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
1618{
1619 return sprintf(buf, "%d\n", atkbd->set);
1620}
1621
1622static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
1623{
1624 struct input_dev *old_dev, *new_dev;
1625 unsigned int value;
1626 int err;
1627 unsigned char old_set;
1628 bool old_extra;
1629
1630 if (!atkbd->write)
1631 return -EIO;
1632
1633 err = kstrtouint(buf, 10, &value);
1634 if (err)
1635 return err;
1636
1637 if (value != 2 && value != 3)
1638 return -EINVAL;
1639
1640 if (atkbd->set != value) {
1641 old_dev = atkbd->dev;
1642 old_extra = atkbd->extra;
1643 old_set = atkbd->set;
1644
1645 new_dev = input_allocate_device();
1646 if (!new_dev)
1647 return -ENOMEM;
1648
1649 atkbd->dev = new_dev;
1650 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra);
1651 atkbd_reset_state(atkbd);
1652 atkbd_activate(atkbd);
1653 atkbd_set_keycode_table(atkbd);
1654 atkbd_set_device_attrs(atkbd);
1655
1656 err = input_register_device(atkbd->dev);
1657 if (err) {
1658 input_free_device(new_dev);
1659
1660 atkbd->dev = old_dev;
1661 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1662 atkbd_set_keycode_table(atkbd);
1663 atkbd_set_device_attrs(atkbd);
1664
1665 return err;
1666 }
1667 input_unregister_device(old_dev);
1668 }
1669 return count;
1670}
1671
1672static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
1673{
1674 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
1675}
1676
1677static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
1678{
1679 struct input_dev *old_dev, *new_dev;
1680 unsigned int value;
1681 int err;
1682 bool old_softrepeat, old_softraw;
1683
1684 if (!atkbd->write)
1685 return -EIO;
1686
1687 err = kstrtouint(buf, 10, &value);
1688 if (err)
1689 return err;
1690
1691 if (value > 1)
1692 return -EINVAL;
1693
1694 if (atkbd->softrepeat != value) {
1695 old_dev = atkbd->dev;
1696 old_softrepeat = atkbd->softrepeat;
1697 old_softraw = atkbd->softraw;
1698
1699 new_dev = input_allocate_device();
1700 if (!new_dev)
1701 return -ENOMEM;
1702
1703 atkbd->dev = new_dev;
1704 atkbd->softrepeat = value;
1705 if (atkbd->softrepeat)
1706 atkbd->softraw = true;
1707 atkbd_set_device_attrs(atkbd);
1708
1709 err = input_register_device(atkbd->dev);
1710 if (err) {
1711 input_free_device(new_dev);
1712
1713 atkbd->dev = old_dev;
1714 atkbd->softrepeat = old_softrepeat;
1715 atkbd->softraw = old_softraw;
1716 atkbd_set_device_attrs(atkbd);
1717
1718 return err;
1719 }
1720 input_unregister_device(old_dev);
1721 }
1722 return count;
1723}
1724
1725
1726static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
1727{
1728 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
1729}
1730
1731static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
1732{
1733 struct input_dev *old_dev, *new_dev;
1734 unsigned int value;
1735 int err;
1736 bool old_softraw;
1737
1738 err = kstrtouint(buf, 10, &value);
1739 if (err)
1740 return err;
1741
1742 if (value > 1)
1743 return -EINVAL;
1744
1745 if (atkbd->softraw != value) {
1746 old_dev = atkbd->dev;
1747 old_softraw = atkbd->softraw;
1748
1749 new_dev = input_allocate_device();
1750 if (!new_dev)
1751 return -ENOMEM;
1752
1753 atkbd->dev = new_dev;
1754 atkbd->softraw = value;
1755 atkbd_set_device_attrs(atkbd);
1756
1757 err = input_register_device(atkbd->dev);
1758 if (err) {
1759 input_free_device(new_dev);
1760
1761 atkbd->dev = old_dev;
1762 atkbd->softraw = old_softraw;
1763 atkbd_set_device_attrs(atkbd);
1764
1765 return err;
1766 }
1767 input_unregister_device(old_dev);
1768 }
1769 return count;
1770}
1771
1772static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
1773{
1774 return sprintf(buf, "%lu\n", atkbd->err_count);
1775}
1776
1777static int __init atkbd_setup_forced_release(const struct dmi_system_id *id)
1778{
1779 atkbd_platform_fixup = atkbd_apply_forced_release_keylist;
1780 atkbd_platform_fixup_data = id->driver_data;
1781
1782 return 1;
1783}
1784
1785static int __init atkbd_setup_scancode_fixup(const struct dmi_system_id *id)
1786{
1787 atkbd_platform_scancode_fixup = id->driver_data;
1788
1789 return 1;
1790}
1791
1792static int __init atkbd_deactivate_fixup(const struct dmi_system_id *id)
1793{
1794 atkbd_skip_deactivate = true;
1795 return 1;
1796}
1797
1798/*
1799 * NOTE: do not add any more "force release" quirks to this table. The
1800 * task of adjusting list of keys that should be "released" automatically
1801 * by the driver is now delegated to userspace tools, such as udev, so
1802 * submit such quirks there.
1803 */
1804static const struct dmi_system_id atkbd_dmi_quirk_table[] __initconst = {
1805 {
1806 .matches = {
1807 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
1808 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1809 },
1810 .callback = atkbd_setup_forced_release,
1811 .driver_data = atkbd_dell_laptop_forced_release_keys,
1812 },
1813 {
1814 .matches = {
1815 DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
1816 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1817 },
1818 .callback = atkbd_setup_forced_release,
1819 .driver_data = atkbd_dell_laptop_forced_release_keys,
1820 },
1821 {
1822 .matches = {
1823 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1824 DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"),
1825 },
1826 .callback = atkbd_setup_forced_release,
1827 .driver_data = atkbd_hp_forced_release_keys,
1828 },
1829 {
1830 .matches = {
1831 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1832 DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion ZV6100"),
1833 },
1834 .callback = atkbd_setup_forced_release,
1835 .driver_data = atkbd_volume_forced_release_keys,
1836 },
1837 {
1838 .matches = {
1839 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1840 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4000"),
1841 },
1842 .callback = atkbd_setup_forced_release,
1843 .driver_data = atkbd_volume_forced_release_keys,
1844 },
1845 {
1846 .matches = {
1847 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1848 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4100"),
1849 },
1850 .callback = atkbd_setup_forced_release,
1851 .driver_data = atkbd_volume_forced_release_keys,
1852 },
1853 {
1854 .matches = {
1855 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1856 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4200"),
1857 },
1858 .callback = atkbd_setup_forced_release,
1859 .driver_data = atkbd_volume_forced_release_keys,
1860 },
1861 {
1862 /* Inventec Symphony */
1863 .matches = {
1864 DMI_MATCH(DMI_SYS_VENDOR, "INVENTEC"),
1865 DMI_MATCH(DMI_PRODUCT_NAME, "SYMPHONY 6.0/7.0"),
1866 },
1867 .callback = atkbd_setup_forced_release,
1868 .driver_data = atkbd_volume_forced_release_keys,
1869 },
1870 {
1871 /* Samsung NC10 */
1872 .matches = {
1873 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1874 DMI_MATCH(DMI_PRODUCT_NAME, "NC10"),
1875 },
1876 .callback = atkbd_setup_forced_release,
1877 .driver_data = atkbd_samsung_forced_release_keys,
1878 },
1879 {
1880 /* Samsung NC20 */
1881 .matches = {
1882 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1883 DMI_MATCH(DMI_PRODUCT_NAME, "NC20"),
1884 },
1885 .callback = atkbd_setup_forced_release,
1886 .driver_data = atkbd_samsung_forced_release_keys,
1887 },
1888 {
1889 /* Samsung SQ45S70S */
1890 .matches = {
1891 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1892 DMI_MATCH(DMI_PRODUCT_NAME, "SQ45S70S"),
1893 },
1894 .callback = atkbd_setup_forced_release,
1895 .driver_data = atkbd_samsung_forced_release_keys,
1896 },
1897 {
1898 /* Fujitsu Amilo PA 1510 */
1899 .matches = {
1900 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1901 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 1510"),
1902 },
1903 .callback = atkbd_setup_forced_release,
1904 .driver_data = atkbd_volume_forced_release_keys,
1905 },
1906 {
1907 /* Fujitsu Amilo Pi 3525 */
1908 .matches = {
1909 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1910 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 3525"),
1911 },
1912 .callback = atkbd_setup_forced_release,
1913 .driver_data = atkbd_amilo_pi3525_forced_release_keys,
1914 },
1915 {
1916 /* Fujitsu Amilo Xi 3650 */
1917 .matches = {
1918 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1919 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 3650"),
1920 },
1921 .callback = atkbd_setup_forced_release,
1922 .driver_data = atkbd_amilo_xi3650_forced_release_keys,
1923 },
1924 {
1925 .matches = {
1926 DMI_MATCH(DMI_SYS_VENDOR, "Soltech Corporation"),
1927 DMI_MATCH(DMI_PRODUCT_NAME, "TA12"),
1928 },
1929 .callback = atkbd_setup_forced_release,
1930 .driver_data = atkdb_soltech_ta12_forced_release_keys,
1931 },
1932 {
1933 /* OQO Model 01+ */
1934 .matches = {
1935 DMI_MATCH(DMI_SYS_VENDOR, "OQO"),
1936 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPTO"),
1937 },
1938 .callback = atkbd_setup_scancode_fixup,
1939 .driver_data = atkbd_oqo_01plus_scancode_fixup,
1940 },
1941 {
1942 .matches = {
1943 DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"),
1944 },
1945 .callback = atkbd_deactivate_fixup,
1946 },
1947 { }
1948};
1949
1950static int __init atkbd_init(void)
1951{
1952 dmi_check_system(atkbd_dmi_quirk_table);
1953
1954 return serio_register_driver(&atkbd_drv);
1955}
1956
1957static void __exit atkbd_exit(void)
1958{
1959 serio_unregister_driver(&atkbd_drv);
1960}
1961
1962module_init(atkbd_init);
1963module_exit(atkbd_exit);