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ecryptfs: fix use with tmpfs by removing d_drop from ecryptfs_destroy_inode
[linux/fpc-iii.git] / drivers / input / keyboard / atkbd.c
blobd358ef8623f490709875b901d82580b1afc7a7fc
1 /*
2 * AT and PS/2 keyboard driver
3 *
4 * Copyright (c) 1999-2002 Vojtech Pavlik
5 */
6
7 /*
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License version 2 as published by
10 * the Free Software Foundation.
11 */
12
13 /*
14 * This driver can handle standard AT keyboards and PS/2 keyboards in
15 * Translated and Raw Set 2 and Set 3, as well as AT keyboards on dumb
16 * input-only controllers and AT keyboards connected over a one way RS232
17 * converter.
18 */
19
20 #include <linux/delay.h>
21 #include <linux/module.h>
22 #include <linux/slab.h>
23 #include <linux/interrupt.h>
24 #include <linux/init.h>
25 #include <linux/input.h>
26 #include <linux/serio.h>
27 #include <linux/workqueue.h>
28 #include <linux/libps2.h>
29 #include <linux/mutex.h>
30 #include <linux/dmi.h>
31
32 #define DRIVER_DESC "AT and PS/2 keyboard driver"
33
34 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
35 MODULE_DESCRIPTION(DRIVER_DESC);
36 MODULE_LICENSE("GPL");
37
38 static int atkbd_set = 2;
39 module_param_named(set, atkbd_set, int, 0);
40 MODULE_PARM_DESC(set, "Select keyboard code set (2 = default, 3 = PS/2 native)");
41
42 #if defined(__i386__) || defined(__x86_64__) || defined(__hppa__)
43 static bool atkbd_reset;
44 #else
45 static bool atkbd_reset = true;
46 #endif
47 module_param_named(reset, atkbd_reset, bool, 0);
48 MODULE_PARM_DESC(reset, "Reset keyboard during initialization");
49
50 static bool atkbd_softrepeat;
51 module_param_named(softrepeat, atkbd_softrepeat, bool, 0);
52 MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat");
53
54 static bool atkbd_softraw = true;
55 module_param_named(softraw, atkbd_softraw, bool, 0);
56 MODULE_PARM_DESC(softraw, "Use software generated rawmode");
57
58 static bool atkbd_scroll;
59 module_param_named(scroll, atkbd_scroll, bool, 0);
60 MODULE_PARM_DESC(scroll, "Enable scroll-wheel on MS Office and similar keyboards");
61
62 static bool atkbd_extra;
63 module_param_named(extra, atkbd_extra, bool, 0);
64 MODULE_PARM_DESC(extra, "Enable extra LEDs and keys on IBM RapidAcces, EzKey and similar keyboards");
65
66 /*
67 * Scancode to keycode tables. These are just the default setting, and
68 * are loadable via a userland utility.
69 */
70
71 #define ATKBD_KEYMAP_SIZE 512
72
73 static const unsigned short atkbd_set2_keycode[ATKBD_KEYMAP_SIZE] = {
74
75 #ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES
76
77 /* XXX: need a more general approach */
78
79 #include "hpps2atkbd.h" /* include the keyboard scancodes */
80
81 #else
82 0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117,
83 0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0,
84 0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183,
85 0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185,
86 0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0,
87 0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85,
88 0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0,
89 82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99,
90
91 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
92 217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125,
93 173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127,
94 159, 0,115, 0,164, 0, 0,116,158, 0,172,166, 0, 0, 0,142,
95 157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0,
96 226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0,
97 0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112,
98 110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0,
99
100 0, 0, 0, 65, 99,
101 #endif
102 };
103
104 static const unsigned short atkbd_set3_keycode[ATKBD_KEYMAP_SIZE] = {
105
106 0, 0, 0, 0, 0, 0, 0, 59, 1,138,128,129,130, 15, 41, 60,
107 131, 29, 42, 86, 58, 16, 2, 61,133, 56, 44, 31, 30, 17, 3, 62,
108 134, 46, 45, 32, 18, 5, 4, 63,135, 57, 47, 33, 20, 19, 6, 64,
109 136, 49, 48, 35, 34, 21, 7, 65,137,100, 50, 36, 22, 8, 9, 66,
110 125, 51, 37, 23, 24, 11, 10, 67,126, 52, 53, 38, 39, 25, 12, 68,
111 113,114, 40, 43, 26, 13, 87, 99, 97, 54, 28, 27, 43, 43, 88, 70,
112 108,105,119,103,111,107, 14,110, 0, 79,106, 75, 71,109,102,104,
113 82, 83, 80, 76, 77, 72, 69, 98, 0, 96, 81, 0, 78, 73, 55,183,
114
115 184,185,186,187, 74, 94, 92, 93, 0, 0, 0,125,126,127,112, 0,
116 0,139,172,163,165,115,152,172,166,140,160,154,113,114,167,168,
117 148,149,147,140
118 };
119
120 static const unsigned short atkbd_unxlate_table[128] = {
121 0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13,
122 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27,
123 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42,
124 50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3,
125 11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105,
126 114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63,
127 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111,
128 19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110
129 };
130
131 #define ATKBD_CMD_SETLEDS 0x10ed
132 #define ATKBD_CMD_GSCANSET 0x11f0
133 #define ATKBD_CMD_SSCANSET 0x10f0
134 #define ATKBD_CMD_GETID 0x02f2
135 #define ATKBD_CMD_SETREP 0x10f3
136 #define ATKBD_CMD_ENABLE 0x00f4
137 #define ATKBD_CMD_RESET_DIS 0x00f5 /* Reset to defaults and disable */
138 #define ATKBD_CMD_RESET_DEF 0x00f6 /* Reset to defaults */
139 #define ATKBD_CMD_SETALL_MBR 0x00fa
140 #define ATKBD_CMD_RESET_BAT 0x02ff
141 #define ATKBD_CMD_RESEND 0x00fe
142 #define ATKBD_CMD_EX_ENABLE 0x10ea
143 #define ATKBD_CMD_EX_SETLEDS 0x20eb
144 #define ATKBD_CMD_OK_GETID 0x02e8
145
146 #define ATKBD_RET_ACK 0xfa
147 #define ATKBD_RET_NAK 0xfe
148 #define ATKBD_RET_BAT 0xaa
149 #define ATKBD_RET_EMUL0 0xe0
150 #define ATKBD_RET_EMUL1 0xe1
151 #define ATKBD_RET_RELEASE 0xf0
152 #define ATKBD_RET_HANJA 0xf1
153 #define ATKBD_RET_HANGEUL 0xf2
154 #define ATKBD_RET_ERR 0xff
155
156 #define ATKBD_KEY_UNKNOWN 0
157 #define ATKBD_KEY_NULL 255
158
159 #define ATKBD_SCR_1 0xfffe
160 #define ATKBD_SCR_2 0xfffd
161 #define ATKBD_SCR_4 0xfffc
162 #define ATKBD_SCR_8 0xfffb
163 #define ATKBD_SCR_CLICK 0xfffa
164 #define ATKBD_SCR_LEFT 0xfff9
165 #define ATKBD_SCR_RIGHT 0xfff8
166
167 #define ATKBD_SPECIAL ATKBD_SCR_RIGHT
168
169 #define ATKBD_LED_EVENT_BIT 0
170 #define ATKBD_REP_EVENT_BIT 1
171
172 #define ATKBD_XL_ERR 0x01
173 #define ATKBD_XL_BAT 0x02
174 #define ATKBD_XL_ACK 0x04
175 #define ATKBD_XL_NAK 0x08
176 #define ATKBD_XL_HANGEUL 0x10
177 #define ATKBD_XL_HANJA 0x20
178
179 static const struct {
180 unsigned short keycode;
181 unsigned char set2;
182 } atkbd_scroll_keys[] = {
183 { ATKBD_SCR_1, 0xc5 },
184 { ATKBD_SCR_2, 0x9d },
185 { ATKBD_SCR_4, 0xa4 },
186 { ATKBD_SCR_8, 0x9b },
187 { ATKBD_SCR_CLICK, 0xe0 },
188 { ATKBD_SCR_LEFT, 0xcb },
189 { ATKBD_SCR_RIGHT, 0xd2 },
190 };
191
192 /*
193 * The atkbd control structure
194 */
195
196 struct atkbd {
197
198 struct ps2dev ps2dev;
199 struct input_dev *dev;
200
201 /* Written only during init */
202 char name[64];
203 char phys[32];
204
205 unsigned short id;
206 unsigned short keycode[ATKBD_KEYMAP_SIZE];
207 DECLARE_BITMAP(force_release_mask, ATKBD_KEYMAP_SIZE);
208 unsigned char set;
209 bool translated;
210 bool extra;
211 bool write;
212 bool softrepeat;
213 bool softraw;
214 bool scroll;
215 bool enabled;
216
217 /* Accessed only from interrupt */
218 unsigned char emul;
219 bool resend;
220 bool release;
221 unsigned long xl_bit;
222 unsigned int last;
223 unsigned long time;
224 unsigned long err_count;
225
226 struct delayed_work event_work;
227 unsigned long event_jiffies;
228 unsigned long event_mask;
229
230 /* Serializes reconnect(), attr->set() and event work */
231 struct mutex mutex;
232 };
233
234 /*
235 * System-specific keymap fixup routine
236 */
237 static void (*atkbd_platform_fixup)(struct atkbd *, const void *data);
238 static void *atkbd_platform_fixup_data;
239 static unsigned int (*atkbd_platform_scancode_fixup)(struct atkbd *, unsigned int);
240
241 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
242 ssize_t (*handler)(struct atkbd *, char *));
243 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
244 ssize_t (*handler)(struct atkbd *, const char *, size_t));
245 #define ATKBD_DEFINE_ATTR(_name) \
246 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
247 static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \
248 static ssize_t atkbd_do_show_##_name(struct device *d, \
249 struct device_attribute *attr, char *b) \
250 { \
251 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
252 } \
253 static ssize_t atkbd_do_set_##_name(struct device *d, \
254 struct device_attribute *attr, const char *b, size_t s) \
255 { \
256 return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name); \
257 } \
258 static struct device_attribute atkbd_attr_##_name = \
259 __ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name);
260
261 ATKBD_DEFINE_ATTR(extra);
262 ATKBD_DEFINE_ATTR(force_release);
263 ATKBD_DEFINE_ATTR(scroll);
264 ATKBD_DEFINE_ATTR(set);
265 ATKBD_DEFINE_ATTR(softrepeat);
266 ATKBD_DEFINE_ATTR(softraw);
267
268 #define ATKBD_DEFINE_RO_ATTR(_name) \
269 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
270 static ssize_t atkbd_do_show_##_name(struct device *d, \
271 struct device_attribute *attr, char *b) \
272 { \
273 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
274 } \
275 static struct device_attribute atkbd_attr_##_name = \
276 __ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL);
277
278 ATKBD_DEFINE_RO_ATTR(err_count);
279
280 static struct attribute *atkbd_attributes[] = {
281 &atkbd_attr_extra.attr,
282 &atkbd_attr_force_release.attr,
283 &atkbd_attr_scroll.attr,
284 &atkbd_attr_set.attr,
285 &atkbd_attr_softrepeat.attr,
286 &atkbd_attr_softraw.attr,
287 &atkbd_attr_err_count.attr,
288 NULL
289 };
290
291 static struct attribute_group atkbd_attribute_group = {
292 .attrs = atkbd_attributes,
293 };
294
295 static const unsigned int xl_table[] = {
296 ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK,
297 ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL,
298 };
299
300 /*
301 * Checks if we should mangle the scancode to extract 'release' bit
302 * in translated mode.
303 */
304 static bool atkbd_need_xlate(unsigned long xl_bit, unsigned char code)
305 {
306 int i;
307
308 if (code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1)
309 return false;
310
311 for (i = 0; i < ARRAY_SIZE(xl_table); i++)
312 if (code == xl_table[i])
313 return test_bit(i, &xl_bit);
314
315 return true;
316 }
317
318 /*
319 * Calculates new value of xl_bit so the driver can distinguish
320 * between make/break pair of scancodes for select keys and PS/2
321 * protocol responses.
322 */
323 static void atkbd_calculate_xl_bit(struct atkbd *atkbd, unsigned char code)
324 {
325 int i;
326
327 for (i = 0; i < ARRAY_SIZE(xl_table); i++) {
328 if (!((code ^ xl_table[i]) & 0x7f)) {
329 if (code & 0x80)
330 __clear_bit(i, &atkbd->xl_bit);
331 else
332 __set_bit(i, &atkbd->xl_bit);
333 break;
334 }
335 }
336 }
337
338 /*
339 * Encode the scancode, 0xe0 prefix, and high bit into a single integer,
340 * keeping kernel 2.4 compatibility for set 2
341 */
342 static unsigned int atkbd_compat_scancode(struct atkbd *atkbd, unsigned int code)
343 {
344 if (atkbd->set == 3) {
345 if (atkbd->emul == 1)
346 code |= 0x100;
347 } else {
348 code = (code & 0x7f) | ((code & 0x80) << 1);
349 if (atkbd->emul == 1)
350 code |= 0x80;
351 }
352
353 return code;
354 }
355
356 /*
357 * atkbd_interrupt(). Here takes place processing of data received from
358 * the keyboard into events.
359 */
360
361 static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data,
362 unsigned int flags)
363 {
364 struct atkbd *atkbd = serio_get_drvdata(serio);
365 struct input_dev *dev = atkbd->dev;
366 unsigned int code = data;
367 int scroll = 0, hscroll = 0, click = -1;
368 int value;
369 unsigned short keycode;
370
371 dev_dbg(&serio->dev, "Received %02x flags %02x\n", data, flags);
372
373 #if !defined(__i386__) && !defined (__x86_64__)
374 if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) {
375 dev_warn(&serio->dev, "Frame/parity error: %02x\n", flags);
376 serio_write(serio, ATKBD_CMD_RESEND);
377 atkbd->resend = true;
378 goto out;
379 }
380
381 if (!flags && data == ATKBD_RET_ACK)
382 atkbd->resend = false;
383 #endif
384
385 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_ACK))
386 if (ps2_handle_ack(&atkbd->ps2dev, data))
387 goto out;
388
389 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_CMD))
390 if (ps2_handle_response(&atkbd->ps2dev, data))
391 goto out;
392
393 if (!atkbd->enabled)
394 goto out;
395
396 input_event(dev, EV_MSC, MSC_RAW, code);
397
398 if (atkbd_platform_scancode_fixup)
399 code = atkbd_platform_scancode_fixup(atkbd, code);
400
401 if (atkbd->translated) {
402
403 if (atkbd->emul || atkbd_need_xlate(atkbd->xl_bit, code)) {
404 atkbd->release = code >> 7;
405 code &= 0x7f;
406 }
407
408 if (!atkbd->emul)
409 atkbd_calculate_xl_bit(atkbd, data);
410 }
411
412 switch (code) {
413 case ATKBD_RET_BAT:
414 atkbd->enabled = false;
415 serio_reconnect(atkbd->ps2dev.serio);
416 goto out;
417 case ATKBD_RET_EMUL0:
418 atkbd->emul = 1;
419 goto out;
420 case ATKBD_RET_EMUL1:
421 atkbd->emul = 2;
422 goto out;
423 case ATKBD_RET_RELEASE:
424 atkbd->release = true;
425 goto out;
426 case ATKBD_RET_ACK:
427 case ATKBD_RET_NAK:
428 if (printk_ratelimit())
429 dev_warn(&serio->dev,
430 "Spurious %s on %s. "
431 "Some program might be trying access hardware directly.\n",
432 data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys);
433 goto out;
434 case ATKBD_RET_ERR:
435 atkbd->err_count++;
436 dev_dbg(&serio->dev, "Keyboard on %s reports too many keys pressed.\n",
437 serio->phys);
438 goto out;
439 }
440
441 code = atkbd_compat_scancode(atkbd, code);
442
443 if (atkbd->emul && --atkbd->emul)
444 goto out;
445
446 keycode = atkbd->keycode[code];
447
448 if (keycode != ATKBD_KEY_NULL)
449 input_event(dev, EV_MSC, MSC_SCAN, code);
450
451 switch (keycode) {
452 case ATKBD_KEY_NULL:
453 break;
454 case ATKBD_KEY_UNKNOWN:
455 dev_warn(&serio->dev,
456 "Unknown key %s (%s set %d, code %#x on %s).\n",
457 atkbd->release ? "released" : "pressed",
458 atkbd->translated ? "translated" : "raw",
459 atkbd->set, code, serio->phys);
460 dev_warn(&serio->dev,
461 "Use 'setkeycodes %s%02x <keycode>' to make it known.\n",
462 code & 0x80 ? "e0" : "", code & 0x7f);
463 input_sync(dev);
464 break;
465 case ATKBD_SCR_1:
466 scroll = 1;
467 break;
468 case ATKBD_SCR_2:
469 scroll = 2;
470 break;
471 case ATKBD_SCR_4:
472 scroll = 4;
473 break;
474 case ATKBD_SCR_8:
475 scroll = 8;
476 break;
477 case ATKBD_SCR_CLICK:
478 click = !atkbd->release;
479 break;
480 case ATKBD_SCR_LEFT:
481 hscroll = -1;
482 break;
483 case ATKBD_SCR_RIGHT:
484 hscroll = 1;
485 break;
486 default:
487 if (atkbd->release) {
488 value = 0;
489 atkbd->last = 0;
490 } else if (!atkbd->softrepeat && test_bit(keycode, dev->key)) {
491 /* Workaround Toshiba laptop multiple keypress */
492 value = time_before(jiffies, atkbd->time) && atkbd->last == code ? 1 : 2;
493 } else {
494 value = 1;
495 atkbd->last = code;
496 atkbd->time = jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]) / 2;
497 }
498
499 input_event(dev, EV_KEY, keycode, value);
500 input_sync(dev);
501
502 if (value && test_bit(code, atkbd->force_release_mask)) {
503 input_report_key(dev, keycode, 0);
504 input_sync(dev);
505 }
506 }
507
508 if (atkbd->scroll) {
509 if (click != -1)
510 input_report_key(dev, BTN_MIDDLE, click);
511 input_report_rel(dev, REL_WHEEL,
512 atkbd->release ? -scroll : scroll);
513 input_report_rel(dev, REL_HWHEEL, hscroll);
514 input_sync(dev);
515 }
516
517 atkbd->release = false;
518 out:
519 return IRQ_HANDLED;
520 }
521
522 static int atkbd_set_repeat_rate(struct atkbd *atkbd)
523 {
524 const short period[32] =
525 { 33, 37, 42, 46, 50, 54, 58, 63, 67, 75, 83, 92, 100, 109, 116, 125,
526 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 };
527 const short delay[4] =
528 { 250, 500, 750, 1000 };
529
530 struct input_dev *dev = atkbd->dev;
531 unsigned char param;
532 int i = 0, j = 0;
533
534 while (i < ARRAY_SIZE(period) - 1 && period[i] < dev->rep[REP_PERIOD])
535 i++;
536 dev->rep[REP_PERIOD] = period[i];
537
538 while (j < ARRAY_SIZE(delay) - 1 && delay[j] < dev->rep[REP_DELAY])
539 j++;
540 dev->rep[REP_DELAY] = delay[j];
541
542 param = i | (j << 5);
543 return ps2_command(&atkbd->ps2dev, &param, ATKBD_CMD_SETREP);
544 }
545
546 static int atkbd_set_leds(struct atkbd *atkbd)
547 {
548 struct input_dev *dev = atkbd->dev;
549 unsigned char param[2];
550
551 param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0)
552 | (test_bit(LED_NUML, dev->led) ? 2 : 0)
553 | (test_bit(LED_CAPSL, dev->led) ? 4 : 0);
554 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS))
555 return -1;
556
557 if (atkbd->extra) {
558 param[0] = 0;
559 param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0)
560 | (test_bit(LED_SLEEP, dev->led) ? 0x02 : 0)
561 | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0)
562 | (test_bit(LED_MISC, dev->led) ? 0x10 : 0)
563 | (test_bit(LED_MUTE, dev->led) ? 0x20 : 0);
564 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS))
565 return -1;
566 }
567
568 return 0;
569 }
570
571 /*
572 * atkbd_event_work() is used to complete processing of events that
573 * can not be processed by input_event() which is often called from
574 * interrupt context.
575 */
576
577 static void atkbd_event_work(struct work_struct *work)
578 {
579 struct atkbd *atkbd = container_of(work, struct atkbd, event_work.work);
580
581 mutex_lock(&atkbd->mutex);
582
583 if (!atkbd->enabled) {
584 /*
585 * Serio ports are resumed asynchronously so while driver core
586 * thinks that device is already fully operational in reality
587 * it may not be ready yet. In this case we need to keep
588 * rescheduling till reconnect completes.
589 */
590 schedule_delayed_work(&atkbd->event_work,
591 msecs_to_jiffies(100));
592 } else {
593 if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask))
594 atkbd_set_leds(atkbd);
595
596 if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask))
597 atkbd_set_repeat_rate(atkbd);
598 }
599
600 mutex_unlock(&atkbd->mutex);
601 }
602
603 /*
604 * Schedule switch for execution. We need to throttle requests,
605 * otherwise keyboard may become unresponsive.
606 */
607 static void atkbd_schedule_event_work(struct atkbd *atkbd, int event_bit)
608 {
609 unsigned long delay = msecs_to_jiffies(50);
610
611 if (time_after(jiffies, atkbd->event_jiffies + delay))
612 delay = 0;
613
614 atkbd->event_jiffies = jiffies;
615 set_bit(event_bit, &atkbd->event_mask);
616 mb();
617 schedule_delayed_work(&atkbd->event_work, delay);
618 }
619
620 /*
621 * Event callback from the input module. Events that change the state of
622 * the hardware are processed here. If action can not be performed in
623 * interrupt context it is offloaded to atkbd_event_work.
624 */
625
626 static int atkbd_event(struct input_dev *dev,
627 unsigned int type, unsigned int code, int value)
628 {
629 struct atkbd *atkbd = input_get_drvdata(dev);
630
631 if (!atkbd->write)
632 return -1;
633
634 switch (type) {
635
636 case EV_LED:
637 atkbd_schedule_event_work(atkbd, ATKBD_LED_EVENT_BIT);
638 return 0;
639
640 case EV_REP:
641 if (!atkbd->softrepeat)
642 atkbd_schedule_event_work(atkbd, ATKBD_REP_EVENT_BIT);
643 return 0;
644
645 default:
646 return -1;
647 }
648 }
649
650 /*
651 * atkbd_enable() signals that interrupt handler is allowed to
652 * generate input events.
653 */
654
655 static inline void atkbd_enable(struct atkbd *atkbd)
656 {
657 serio_pause_rx(atkbd->ps2dev.serio);
658 atkbd->enabled = true;
659 serio_continue_rx(atkbd->ps2dev.serio);
660 }
661
662 /*
663 * atkbd_disable() tells input handler that all incoming data except
664 * for ACKs and command response should be dropped.
665 */
666
667 static inline void atkbd_disable(struct atkbd *atkbd)
668 {
669 serio_pause_rx(atkbd->ps2dev.serio);
670 atkbd->enabled = false;
671 serio_continue_rx(atkbd->ps2dev.serio);
672 }
673
674 /*
675 * atkbd_probe() probes for an AT keyboard on a serio port.
676 */
677
678 static int atkbd_probe(struct atkbd *atkbd)
679 {
680 struct ps2dev *ps2dev = &atkbd->ps2dev;
681 unsigned char param[2];
682
683 /*
684 * Some systems, where the bit-twiddling when testing the io-lines of the
685 * controller may confuse the keyboard need a full reset of the keyboard. On
686 * these systems the BIOS also usually doesn't do it for us.
687 */
688
689 if (atkbd_reset)
690 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT))
691 dev_warn(&ps2dev->serio->dev,
692 "keyboard reset failed on %s\n",
693 ps2dev->serio->phys);
694
695 /*
696 * Then we check the keyboard ID. We should get 0xab83 under normal conditions.
697 * Some keyboards report different values, but the first byte is always 0xab or
698 * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this
699 * should make sure we don't try to set the LEDs on it.
700 */
701
702 param[0] = param[1] = 0xa5; /* initialize with invalid values */
703 if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) {
704
705 /*
706 * If the get ID command failed, we check if we can at least set the LEDs on
707 * the keyboard. This should work on every keyboard out there. It also turns
708 * the LEDs off, which we want anyway.
709 */
710 param[0] = 0;
711 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
712 return -1;
713 atkbd->id = 0xabba;
714 return 0;
715 }
716
717 if (!ps2_is_keyboard_id(param[0]))
718 return -1;
719
720 atkbd->id = (param[0] << 8) | param[1];
721
722 if (atkbd->id == 0xaca1 && atkbd->translated) {
723 dev_err(&ps2dev->serio->dev,
724 "NCD terminal keyboards are only supported on non-translating controlelrs. "
725 "Use i8042.direct=1 to disable translation.\n");
726 return -1;
727 }
728
729 return 0;
730 }
731
732 /*
733 * atkbd_select_set checks if a keyboard has a working Set 3 support, and
734 * sets it into that. Unfortunately there are keyboards that can be switched
735 * to Set 3, but don't work well in that (BTC Multimedia ...)
736 */
737
738 static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra)
739 {
740 struct ps2dev *ps2dev = &atkbd->ps2dev;
741 unsigned char param[2];
742
743 atkbd->extra = false;
744 /*
745 * For known special keyboards we can go ahead and set the correct set.
746 * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and
747 * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards.
748 */
749
750 if (atkbd->translated)
751 return 2;
752
753 if (atkbd->id == 0xaca1) {
754 param[0] = 3;
755 ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET);
756 return 3;
757 }
758
759 if (allow_extra) {
760 param[0] = 0x71;
761 if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) {
762 atkbd->extra = true;
763 return 2;
764 }
765 }
766
767 if (target_set != 3)
768 return 2;
769
770 if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) {
771 atkbd->id = param[0] << 8 | param[1];
772 return 2;
773 }
774
775 param[0] = 3;
776 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
777 return 2;
778
779 param[0] = 0;
780 if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET))
781 return 2;
782
783 if (param[0] != 3) {
784 param[0] = 2;
785 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
786 return 2;
787 }
788
789 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR);
790
791 return 3;
792 }
793
794 static int atkbd_reset_state(struct atkbd *atkbd)
795 {
796 struct ps2dev *ps2dev = &atkbd->ps2dev;
797 unsigned char param[1];
798
799 /*
800 * Set the LEDs to a predefined state (all off).
801 */
802
803 param[0] = 0;
804 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
805 return -1;
806
807 /*
808 * Set autorepeat to fastest possible.
809 */
810
811 param[0] = 0;
812 if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP))
813 return -1;
814
815 return 0;
816 }
817
818 static int atkbd_activate(struct atkbd *atkbd)
819 {
820 struct ps2dev *ps2dev = &atkbd->ps2dev;
821
822 /*
823 * Enable the keyboard to receive keystrokes.
824 */
825
826 if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) {
827 dev_err(&ps2dev->serio->dev,
828 "Failed to enable keyboard on %s\n",
829 ps2dev->serio->phys);
830 return -1;
831 }
832
833 return 0;
834 }
835
836 /*
837 * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a
838 * reboot.
839 */
840
841 static void atkbd_cleanup(struct serio *serio)
842 {
843 struct atkbd *atkbd = serio_get_drvdata(serio);
844
845 atkbd_disable(atkbd);
846 ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_DEF);
847 }
848
849
850 /*
851 * atkbd_disconnect() closes and frees.
852 */
853
854 static void atkbd_disconnect(struct serio *serio)
855 {
856 struct atkbd *atkbd = serio_get_drvdata(serio);
857
858 sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
859
860 atkbd_disable(atkbd);
861
862 input_unregister_device(atkbd->dev);
863
864 /*
865 * Make sure we don't have a command in flight.
866 * Note that since atkbd->enabled is false event work will keep
867 * rescheduling itself until it gets canceled and will not try
868 * accessing freed input device or serio port.
869 */
870 cancel_delayed_work_sync(&atkbd->event_work);
871
872 serio_close(serio);
873 serio_set_drvdata(serio, NULL);
874 kfree(atkbd);
875 }
876
877 /*
878 * generate release events for the keycodes given in data
879 */
880 static void atkbd_apply_forced_release_keylist(struct atkbd* atkbd,
881 const void *data)
882 {
883 const unsigned int *keys = data;
884 unsigned int i;
885
886 if (atkbd->set == 2)
887 for (i = 0; keys[i] != -1U; i++)
888 __set_bit(keys[i], atkbd->force_release_mask);
889 }
890
891 /*
892 * Most special keys (Fn+F?) on Dell laptops do not generate release
893 * events so we have to do it ourselves.
894 */
895 static unsigned int atkbd_dell_laptop_forced_release_keys[] = {
896 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8f, 0x93, -1U
897 };
898
899 /*
900 * Perform fixup for HP system that doesn't generate release
901 * for its video switch
902 */
903 static unsigned int atkbd_hp_forced_release_keys[] = {
904 0x94, -1U
905 };
906
907 /*
908 * Samsung NC10,NC20 with Fn+F? key release not working
909 */
910 static unsigned int atkbd_samsung_forced_release_keys[] = {
911 0x82, 0x83, 0x84, 0x86, 0x88, 0x89, 0xb3, 0xf7, 0xf9, -1U
912 };
913
914 /*
915 * Amilo Pi 3525 key release for Fn+Volume keys not working
916 */
917 static unsigned int atkbd_amilo_pi3525_forced_release_keys[] = {
918 0x20, 0xa0, 0x2e, 0xae, 0x30, 0xb0, -1U
919 };
920
921 /*
922 * Amilo Xi 3650 key release for light touch bar not working
923 */
924 static unsigned int atkbd_amilo_xi3650_forced_release_keys[] = {
925 0x67, 0xed, 0x90, 0xa2, 0x99, 0xa4, 0xae, 0xb0, -1U
926 };
927
928 /*
929 * Soltech TA12 system with broken key release on volume keys and mute key
930 */
931 static unsigned int atkdb_soltech_ta12_forced_release_keys[] = {
932 0xa0, 0xae, 0xb0, -1U
933 };
934
935 /*
936 * Many notebooks don't send key release event for volume up/down
937 * keys, with key list below common among them
938 */
939 static unsigned int atkbd_volume_forced_release_keys[] = {
940 0xae, 0xb0, -1U
941 };
942
943 /*
944 * OQO 01+ multimedia keys (64--66) generate e0 6x upon release whereas
945 * they should be generating e4-e6 (0x80 | code).
946 */
947 static unsigned int atkbd_oqo_01plus_scancode_fixup(struct atkbd *atkbd,
948 unsigned int code)
949 {
950 if (atkbd->translated && atkbd->emul == 1 &&
951 (code == 0x64 || code == 0x65 || code == 0x66)) {
952 atkbd->emul = 0;
953 code |= 0x80;
954 }
955
956 return code;
957 }
958
959 /*
960 * atkbd_set_keycode_table() initializes keyboard's keycode table
961 * according to the selected scancode set
962 */
963
964 static void atkbd_set_keycode_table(struct atkbd *atkbd)
965 {
966 unsigned int scancode;
967 int i, j;
968
969 memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
970 bitmap_zero(atkbd->force_release_mask, ATKBD_KEYMAP_SIZE);
971
972 if (atkbd->translated) {
973 for (i = 0; i < 128; i++) {
974 scancode = atkbd_unxlate_table[i];
975 atkbd->keycode[i] = atkbd_set2_keycode[scancode];
976 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80];
977 if (atkbd->scroll)
978 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
979 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2)
980 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
981 }
982 } else if (atkbd->set == 3) {
983 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
984 } else {
985 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
986
987 if (atkbd->scroll)
988 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) {
989 scancode = atkbd_scroll_keys[i].set2;
990 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode;
991 }
992 }
993
994 /*
995 * HANGEUL and HANJA keys do not send release events so we need to
996 * generate such events ourselves
997 */
998 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL);
999 atkbd->keycode[scancode] = KEY_HANGEUL;
1000 __set_bit(scancode, atkbd->force_release_mask);
1001
1002 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA);
1003 atkbd->keycode[scancode] = KEY_HANJA;
1004 __set_bit(scancode, atkbd->force_release_mask);
1005
1006 /*
1007 * Perform additional fixups
1008 */
1009 if (atkbd_platform_fixup)
1010 atkbd_platform_fixup(atkbd, atkbd_platform_fixup_data);
1011 }
1012
1013 /*
1014 * atkbd_set_device_attrs() sets up keyboard's input device structure
1015 */
1016
1017 static void atkbd_set_device_attrs(struct atkbd *atkbd)
1018 {
1019 struct input_dev *input_dev = atkbd->dev;
1020 int i;
1021
1022 if (atkbd->extra)
1023 snprintf(atkbd->name, sizeof(atkbd->name),
1024 "AT Set 2 Extra keyboard");
1025 else
1026 snprintf(atkbd->name, sizeof(atkbd->name),
1027 "AT %s Set %d keyboard",
1028 atkbd->translated ? "Translated" : "Raw", atkbd->set);
1029
1030 snprintf(atkbd->phys, sizeof(atkbd->phys),
1031 "%s/input0", atkbd->ps2dev.serio->phys);
1032
1033 input_dev->name = atkbd->name;
1034 input_dev->phys = atkbd->phys;
1035 input_dev->id.bustype = BUS_I8042;
1036 input_dev->id.vendor = 0x0001;
1037 input_dev->id.product = atkbd->translated ? 1 : atkbd->set;
1038 input_dev->id.version = atkbd->id;
1039 input_dev->event = atkbd_event;
1040 input_dev->dev.parent = &atkbd->ps2dev.serio->dev;
1041
1042 input_set_drvdata(input_dev, atkbd);
1043
1044 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
1045 BIT_MASK(EV_MSC);
1046
1047 if (atkbd->write) {
1048 input_dev->evbit[0] |= BIT_MASK(EV_LED);
1049 input_dev->ledbit[0] = BIT_MASK(LED_NUML) |
1050 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL);
1051 }
1052
1053 if (atkbd->extra)
1054 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) |
1055 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) |
1056 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC);
1057
1058 if (!atkbd->softrepeat) {
1059 input_dev->rep[REP_DELAY] = 250;
1060 input_dev->rep[REP_PERIOD] = 33;
1061 }
1062
1063 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) :
1064 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN);
1065
1066 if (atkbd->scroll) {
1067 input_dev->evbit[0] |= BIT_MASK(EV_REL);
1068 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) |
1069 BIT_MASK(REL_HWHEEL);
1070 __set_bit(BTN_MIDDLE, input_dev->keybit);
1071 }
1072
1073 input_dev->keycode = atkbd->keycode;
1074 input_dev->keycodesize = sizeof(unsigned short);
1075 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
1076
1077 for (i = 0; i < ATKBD_KEYMAP_SIZE; i++) {
1078 if (atkbd->keycode[i] != KEY_RESERVED &&
1079 atkbd->keycode[i] != ATKBD_KEY_NULL &&
1080 atkbd->keycode[i] < ATKBD_SPECIAL) {
1081 __set_bit(atkbd->keycode[i], input_dev->keybit);
1082 }
1083 }
1084 }
1085
1086 /*
1087 * atkbd_connect() is called when the serio module finds an interface
1088 * that isn't handled yet by an appropriate device driver. We check if
1089 * there is an AT keyboard out there and if yes, we register ourselves
1090 * to the input module.
1091 */
1092
1093 static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
1094 {
1095 struct atkbd *atkbd;
1096 struct input_dev *dev;
1097 int err = -ENOMEM;
1098
1099 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL);
1100 dev = input_allocate_device();
1101 if (!atkbd || !dev)
1102 goto fail1;
1103
1104 atkbd->dev = dev;
1105 ps2_init(&atkbd->ps2dev, serio);
1106 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work);
1107 mutex_init(&atkbd->mutex);
1108
1109 switch (serio->id.type) {
1110
1111 case SERIO_8042_XL:
1112 atkbd->translated = true;
1113 /* Fall through */
1114
1115 case SERIO_8042:
1116 if (serio->write)
1117 atkbd->write = true;
1118 break;
1119 }
1120
1121 atkbd->softraw = atkbd_softraw;
1122 atkbd->softrepeat = atkbd_softrepeat;
1123 atkbd->scroll = atkbd_scroll;
1124
1125 if (atkbd->softrepeat)
1126 atkbd->softraw = true;
1127
1128 serio_set_drvdata(serio, atkbd);
1129
1130 err = serio_open(serio, drv);
1131 if (err)
1132 goto fail2;
1133
1134 if (atkbd->write) {
1135
1136 if (atkbd_probe(atkbd)) {
1137 err = -ENODEV;
1138 goto fail3;
1139 }
1140
1141 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
1142 atkbd_reset_state(atkbd);
1143 atkbd_activate(atkbd);
1144
1145 } else {
1146 atkbd->set = 2;
1147 atkbd->id = 0xab00;
1148 }
1149
1150 atkbd_set_keycode_table(atkbd);
1151 atkbd_set_device_attrs(atkbd);
1152
1153 err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group);
1154 if (err)
1155 goto fail3;
1156
1157 atkbd_enable(atkbd);
1158
1159 err = input_register_device(atkbd->dev);
1160 if (err)
1161 goto fail4;
1162
1163 return 0;
1164
1165 fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
1166 fail3: serio_close(serio);
1167 fail2: serio_set_drvdata(serio, NULL);
1168 fail1: input_free_device(dev);
1169 kfree(atkbd);
1170 return err;
1171 }
1172
1173 /*
1174 * atkbd_reconnect() tries to restore keyboard into a sane state and is
1175 * most likely called on resume.
1176 */
1177
1178 static int atkbd_reconnect(struct serio *serio)
1179 {
1180 struct atkbd *atkbd = serio_get_drvdata(serio);
1181 struct serio_driver *drv = serio->drv;
1182 int retval = -1;
1183
1184 if (!atkbd || !drv) {
1185 dev_dbg(&serio->dev,
1186 "reconnect request, but serio is disconnected, ignoring...\n");
1187 return -1;
1188 }
1189
1190 mutex_lock(&atkbd->mutex);
1191
1192 atkbd_disable(atkbd);
1193
1194 if (atkbd->write) {
1195 if (atkbd_probe(atkbd))
1196 goto out;
1197
1198 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
1199 goto out;
1200
1201 atkbd_activate(atkbd);
1202
1203 /*
1204 * Restore LED state and repeat rate. While input core
1205 * will do this for us at resume time reconnect may happen
1206 * because user requested it via sysfs or simply because
1207 * keyboard was unplugged and plugged in again so we need
1208 * to do it ourselves here.
1209 */
1210 atkbd_set_leds(atkbd);
1211 if (!atkbd->softrepeat)
1212 atkbd_set_repeat_rate(atkbd);
1213
1214 }
1215
1216 atkbd_enable(atkbd);
1217 retval = 0;
1218
1219 out:
1220 mutex_unlock(&atkbd->mutex);
1221 return retval;
1222 }
1223
1224 static struct serio_device_id atkbd_serio_ids[] = {
1225 {
1226 .type = SERIO_8042,
1227 .proto = SERIO_ANY,
1228 .id = SERIO_ANY,
1229 .extra = SERIO_ANY,
1230 },
1231 {
1232 .type = SERIO_8042_XL,
1233 .proto = SERIO_ANY,
1234 .id = SERIO_ANY,
1235 .extra = SERIO_ANY,
1236 },
1237 {
1238 .type = SERIO_RS232,
1239 .proto = SERIO_PS2SER,
1240 .id = SERIO_ANY,
1241 .extra = SERIO_ANY,
1242 },
1243 { 0 }
1244 };
1245
1246 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
1247
1248 static struct serio_driver atkbd_drv = {
1249 .driver = {
1250 .name = "atkbd",
1251 },
1252 .description = DRIVER_DESC,
1253 .id_table = atkbd_serio_ids,
1254 .interrupt = atkbd_interrupt,
1255 .connect = atkbd_connect,
1256 .reconnect = atkbd_reconnect,
1257 .disconnect = atkbd_disconnect,
1258 .cleanup = atkbd_cleanup,
1259 };
1260
1261 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
1262 ssize_t (*handler)(struct atkbd *, char *))
1263 {
1264 struct serio *serio = to_serio_port(dev);
1265 struct atkbd *atkbd = serio_get_drvdata(serio);
1266
1267 return handler(atkbd, buf);
1268 }
1269
1270 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
1271 ssize_t (*handler)(struct atkbd *, const char *, size_t))
1272 {
1273 struct serio *serio = to_serio_port(dev);
1274 struct atkbd *atkbd = serio_get_drvdata(serio);
1275 int retval;
1276
1277 retval = mutex_lock_interruptible(&atkbd->mutex);
1278 if (retval)
1279 return retval;
1280
1281 atkbd_disable(atkbd);
1282 retval = handler(atkbd, buf, count);
1283 atkbd_enable(atkbd);
1284
1285 mutex_unlock(&atkbd->mutex);
1286
1287 return retval;
1288 }
1289
1290 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
1291 {
1292 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
1293 }
1294
1295 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
1296 {
1297 struct input_dev *old_dev, *new_dev;
1298 unsigned long value;
1299 int err;
1300 bool old_extra;
1301 unsigned char old_set;
1302
1303 if (!atkbd->write)
1304 return -EIO;
1305
1306 if (strict_strtoul(buf, 10, &value) || value > 1)
1307 return -EINVAL;
1308
1309 if (atkbd->extra != value) {
1310 /*
1311 * Since device's properties will change we need to
1312 * unregister old device. But allocate and register
1313 * new one first to make sure we have it.
1314 */
1315 old_dev = atkbd->dev;
1316 old_extra = atkbd->extra;
1317 old_set = atkbd->set;
1318
1319 new_dev = input_allocate_device();
1320 if (!new_dev)
1321 return -ENOMEM;
1322
1323 atkbd->dev = new_dev;
1324 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
1325 atkbd_reset_state(atkbd);
1326 atkbd_activate(atkbd);
1327 atkbd_set_keycode_table(atkbd);
1328 atkbd_set_device_attrs(atkbd);
1329
1330 err = input_register_device(atkbd->dev);
1331 if (err) {
1332 input_free_device(new_dev);
1333
1334 atkbd->dev = old_dev;
1335 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1336 atkbd_set_keycode_table(atkbd);
1337 atkbd_set_device_attrs(atkbd);
1338
1339 return err;
1340 }
1341 input_unregister_device(old_dev);
1342
1343 }
1344 return count;
1345 }
1346
1347 static ssize_t atkbd_show_force_release(struct atkbd *atkbd, char *buf)
1348 {
1349 size_t len = bitmap_scnlistprintf(buf, PAGE_SIZE - 2,
1350 atkbd->force_release_mask, ATKBD_KEYMAP_SIZE);
1351
1352 buf[len++] = '\n';
1353 buf[len] = '\0';
1354
1355 return len;
1356 }
1357
1358 static ssize_t atkbd_set_force_release(struct atkbd *atkbd,
1359 const char *buf, size_t count)
1360 {
1361 /* 64 bytes on stack should be acceptable */
1362 DECLARE_BITMAP(new_mask, ATKBD_KEYMAP_SIZE);
1363 int err;
1364
1365 err = bitmap_parselist(buf, new_mask, ATKBD_KEYMAP_SIZE);
1366 if (err)
1367 return err;
1368
1369 memcpy(atkbd->force_release_mask, new_mask, sizeof(atkbd->force_release_mask));
1370 return count;
1371 }
1372
1373
1374 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
1375 {
1376 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
1377 }
1378
1379 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
1380 {
1381 struct input_dev *old_dev, *new_dev;
1382 unsigned long value;
1383 int err;
1384 bool old_scroll;
1385
1386 if (strict_strtoul(buf, 10, &value) || value > 1)
1387 return -EINVAL;
1388
1389 if (atkbd->scroll != value) {
1390 old_dev = atkbd->dev;
1391 old_scroll = atkbd->scroll;
1392
1393 new_dev = input_allocate_device();
1394 if (!new_dev)
1395 return -ENOMEM;
1396
1397 atkbd->dev = new_dev;
1398 atkbd->scroll = value;
1399 atkbd_set_keycode_table(atkbd);
1400 atkbd_set_device_attrs(atkbd);
1401
1402 err = input_register_device(atkbd->dev);
1403 if (err) {
1404 input_free_device(new_dev);
1405
1406 atkbd->scroll = old_scroll;
1407 atkbd->dev = old_dev;
1408 atkbd_set_keycode_table(atkbd);
1409 atkbd_set_device_attrs(atkbd);
1410
1411 return err;
1412 }
1413 input_unregister_device(old_dev);
1414 }
1415 return count;
1416 }
1417
1418 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
1419 {
1420 return sprintf(buf, "%d\n", atkbd->set);
1421 }
1422
1423 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
1424 {
1425 struct input_dev *old_dev, *new_dev;
1426 unsigned long value;
1427 int err;
1428 unsigned char old_set;
1429 bool old_extra;
1430
1431 if (!atkbd->write)
1432 return -EIO;
1433
1434 if (strict_strtoul(buf, 10, &value) || (value != 2 && value != 3))
1435 return -EINVAL;
1436
1437 if (atkbd->set != value) {
1438 old_dev = atkbd->dev;
1439 old_extra = atkbd->extra;
1440 old_set = atkbd->set;
1441
1442 new_dev = input_allocate_device();
1443 if (!new_dev)
1444 return -ENOMEM;
1445
1446 atkbd->dev = new_dev;
1447 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra);
1448 atkbd_reset_state(atkbd);
1449 atkbd_activate(atkbd);
1450 atkbd_set_keycode_table(atkbd);
1451 atkbd_set_device_attrs(atkbd);
1452
1453 err = input_register_device(atkbd->dev);
1454 if (err) {
1455 input_free_device(new_dev);
1456
1457 atkbd->dev = old_dev;
1458 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1459 atkbd_set_keycode_table(atkbd);
1460 atkbd_set_device_attrs(atkbd);
1461
1462 return err;
1463 }
1464 input_unregister_device(old_dev);
1465 }
1466 return count;
1467 }
1468
1469 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
1470 {
1471 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
1472 }
1473
1474 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
1475 {
1476 struct input_dev *old_dev, *new_dev;
1477 unsigned long value;
1478 int err;
1479 bool old_softrepeat, old_softraw;
1480
1481 if (!atkbd->write)
1482 return -EIO;
1483
1484 if (strict_strtoul(buf, 10, &value) || value > 1)
1485 return -EINVAL;
1486
1487 if (atkbd->softrepeat != value) {
1488 old_dev = atkbd->dev;
1489 old_softrepeat = atkbd->softrepeat;
1490 old_softraw = atkbd->softraw;
1491
1492 new_dev = input_allocate_device();
1493 if (!new_dev)
1494 return -ENOMEM;
1495
1496 atkbd->dev = new_dev;
1497 atkbd->softrepeat = value;
1498 if (atkbd->softrepeat)
1499 atkbd->softraw = true;
1500 atkbd_set_device_attrs(atkbd);
1501
1502 err = input_register_device(atkbd->dev);
1503 if (err) {
1504 input_free_device(new_dev);
1505
1506 atkbd->dev = old_dev;
1507 atkbd->softrepeat = old_softrepeat;
1508 atkbd->softraw = old_softraw;
1509 atkbd_set_device_attrs(atkbd);
1510
1511 return err;
1512 }
1513 input_unregister_device(old_dev);
1514 }
1515 return count;
1516 }
1517
1518
1519 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
1520 {
1521 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
1522 }
1523
1524 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
1525 {
1526 struct input_dev *old_dev, *new_dev;
1527 unsigned long value;
1528 int err;
1529 bool old_softraw;
1530
1531 if (strict_strtoul(buf, 10, &value) || value > 1)
1532 return -EINVAL;
1533
1534 if (atkbd->softraw != value) {
1535 old_dev = atkbd->dev;
1536 old_softraw = atkbd->softraw;
1537
1538 new_dev = input_allocate_device();
1539 if (!new_dev)
1540 return -ENOMEM;
1541
1542 atkbd->dev = new_dev;
1543 atkbd->softraw = value;
1544 atkbd_set_device_attrs(atkbd);
1545
1546 err = input_register_device(atkbd->dev);
1547 if (err) {
1548 input_free_device(new_dev);
1549
1550 atkbd->dev = old_dev;
1551 atkbd->softraw = old_softraw;
1552 atkbd_set_device_attrs(atkbd);
1553
1554 return err;
1555 }
1556 input_unregister_device(old_dev);
1557 }
1558 return count;
1559 }
1560
1561 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
1562 {
1563 return sprintf(buf, "%lu\n", atkbd->err_count);
1564 }
1565
1566 static int __init atkbd_setup_forced_release(const struct dmi_system_id *id)
1567 {
1568 atkbd_platform_fixup = atkbd_apply_forced_release_keylist;
1569 atkbd_platform_fixup_data = id->driver_data;
1570
1571 return 0;
1572 }
1573
1574 static int __init atkbd_setup_scancode_fixup(const struct dmi_system_id *id)
1575 {
1576 atkbd_platform_scancode_fixup = id->driver_data;
1577
1578 return 0;
1579 }
1580
1581 static const struct dmi_system_id atkbd_dmi_quirk_table[] __initconst = {
1582 {
1583 .matches = {
1584 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
1585 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1586 },
1587 .callback = atkbd_setup_forced_release,
1588 .driver_data = atkbd_dell_laptop_forced_release_keys,
1589 },
1590 {
1591 .matches = {
1592 DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
1593 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1594 },
1595 .callback = atkbd_setup_forced_release,
1596 .driver_data = atkbd_dell_laptop_forced_release_keys,
1597 },
1598 {
1599 .matches = {
1600 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1601 DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"),
1602 },
1603 .callback = atkbd_setup_forced_release,
1604 .driver_data = atkbd_hp_forced_release_keys,
1605 },
1606 {
1607 .matches = {
1608 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1609 DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion ZV6100"),
1610 },
1611 .callback = atkbd_setup_forced_release,
1612 .driver_data = atkbd_volume_forced_release_keys,
1613 },
1614 {
1615 .matches = {
1616 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1617 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4000"),
1618 },
1619 .callback = atkbd_setup_forced_release,
1620 .driver_data = atkbd_volume_forced_release_keys,
1621 },
1622 {
1623 .matches = {
1624 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1625 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4100"),
1626 },
1627 .callback = atkbd_setup_forced_release,
1628 .driver_data = atkbd_volume_forced_release_keys,
1629 },
1630 {
1631 .matches = {
1632 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1633 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4200"),
1634 },
1635 .callback = atkbd_setup_forced_release,
1636 .driver_data = atkbd_volume_forced_release_keys,
1637 },
1638 {
1639 /* Inventec Symphony */
1640 .matches = {
1641 DMI_MATCH(DMI_SYS_VENDOR, "INVENTEC"),
1642 DMI_MATCH(DMI_PRODUCT_NAME, "SYMPHONY 6.0/7.0"),
1643 },
1644 .callback = atkbd_setup_forced_release,
1645 .driver_data = atkbd_volume_forced_release_keys,
1646 },
1647 {
1648 /* Samsung NC10 */
1649 .matches = {
1650 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1651 DMI_MATCH(DMI_PRODUCT_NAME, "NC10"),
1652 },
1653 .callback = atkbd_setup_forced_release,
1654 .driver_data = atkbd_samsung_forced_release_keys,
1655 },
1656 {
1657 /* Samsung NC20 */
1658 .matches = {
1659 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1660 DMI_MATCH(DMI_PRODUCT_NAME, "NC20"),
1661 },
1662 .callback = atkbd_setup_forced_release,
1663 .driver_data = atkbd_samsung_forced_release_keys,
1664 },
1665 {
1666 /* Samsung SQ45S70S */
1667 .matches = {
1668 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1669 DMI_MATCH(DMI_PRODUCT_NAME, "SQ45S70S"),
1670 },
1671 .callback = atkbd_setup_forced_release,
1672 .driver_data = atkbd_samsung_forced_release_keys,
1673 },
1674 {
1675 /* Fujitsu Amilo PA 1510 */
1676 .matches = {
1677 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1678 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 1510"),
1679 },
1680 .callback = atkbd_setup_forced_release,
1681 .driver_data = atkbd_volume_forced_release_keys,
1682 },
1683 {
1684 /* Fujitsu Amilo Pi 3525 */
1685 .matches = {
1686 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1687 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 3525"),
1688 },
1689 .callback = atkbd_setup_forced_release,
1690 .driver_data = atkbd_amilo_pi3525_forced_release_keys,
1691 },
1692 {
1693 /* Fujitsu Amilo Xi 3650 */
1694 .matches = {
1695 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1696 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 3650"),
1697 },
1698 .callback = atkbd_setup_forced_release,
1699 .driver_data = atkbd_amilo_xi3650_forced_release_keys,
1700 },
1701 {
1702 .matches = {
1703 DMI_MATCH(DMI_SYS_VENDOR, "Soltech Corporation"),
1704 DMI_MATCH(DMI_PRODUCT_NAME, "TA12"),
1705 },
1706 .callback = atkbd_setup_forced_release,
1707 .driver_data = atkdb_soltech_ta12_forced_release_keys,
1708 },
1709 {
1710 /* OQO Model 01+ */
1711 .matches = {
1712 DMI_MATCH(DMI_SYS_VENDOR, "OQO"),
1713 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPTO"),
1714 },
1715 .callback = atkbd_setup_scancode_fixup,
1716 .driver_data = atkbd_oqo_01plus_scancode_fixup,
1717 },
1718 { }
1719 };
1720
1721 static int __init atkbd_init(void)
1722 {
1723 dmi_check_system(atkbd_dmi_quirk_table);
1724
1725 return serio_register_driver(&atkbd_drv);
1726 }
1727
1728 static void __exit atkbd_exit(void)
1729 {
1730 serio_unregister_driver(&atkbd_drv);
1731 }
1732
1733 module_init(atkbd_init);
1734 module_exit(atkbd_exit);
Linux with added FPC-III support