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kmemtrace: SLOB hooks.
[linux-2.6/kmemtrace.git] / drivers / input / keyboard / atkbd.c
blobaf58a6f1e898278b42bdd5980d51b10718fd807e
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 int atkbd_reset;
44 #else
45 static int atkbd_reset = 1;
46 #endif
47 module_param_named(reset, atkbd_reset, bool, 0);
48 MODULE_PARM_DESC(reset, "Reset keyboard during initialization");
49
50 static int atkbd_softrepeat;
51 module_param_named(softrepeat, atkbd_softrepeat, bool, 0);
52 MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat");
53
54 static int atkbd_softraw = 1;
55 module_param_named(softraw, atkbd_softraw, bool, 0);
56 MODULE_PARM_DESC(softraw, "Use software generated rawmode");
57
58 static int 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 int 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 an userland utility.
69 */
70
71 static unsigned char atkbd_set2_keycode[512] = {
72
73 #ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES
74
75 /* XXX: need a more general approach */
76
77 #include "hpps2atkbd.h" /* include the keyboard scancodes */
78
79 #else
80 0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117,
81 0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0,
82 0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183,
83 0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185,
84 0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0,
85 0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85,
86 0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0,
87 82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99,
88
89 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
90 217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125,
91 173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127,
92 159, 0,115, 0,164, 0, 0,116,158, 0,172,166, 0, 0, 0,142,
93 157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0,
94 226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0,
95 0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112,
96 110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0,
97
98 0, 0, 0, 65, 99,
99 #endif
100 };
101
102 static unsigned char atkbd_set3_keycode[512] = {
103
104 0, 0, 0, 0, 0, 0, 0, 59, 1,138,128,129,130, 15, 41, 60,
105 131, 29, 42, 86, 58, 16, 2, 61,133, 56, 44, 31, 30, 17, 3, 62,
106 134, 46, 45, 32, 18, 5, 4, 63,135, 57, 47, 33, 20, 19, 6, 64,
107 136, 49, 48, 35, 34, 21, 7, 65,137,100, 50, 36, 22, 8, 9, 66,
108 125, 51, 37, 23, 24, 11, 10, 67,126, 52, 53, 38, 39, 25, 12, 68,
109 113,114, 40, 43, 26, 13, 87, 99, 97, 54, 28, 27, 43, 43, 88, 70,
110 108,105,119,103,111,107, 14,110, 0, 79,106, 75, 71,109,102,104,
111 82, 83, 80, 76, 77, 72, 69, 98, 0, 96, 81, 0, 78, 73, 55,183,
112
113 184,185,186,187, 74, 94, 92, 93, 0, 0, 0,125,126,127,112, 0,
114 0,139,172,163,165,115,152,172,166,140,160,154,113,114,167,168,
115 148,149,147,140
116 };
117
118 static unsigned char atkbd_unxlate_table[128] = {
119 0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13,
120 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27,
121 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42,
122 50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3,
123 11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105,
124 114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63,
125 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111,
126 19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110
127 };
128
129 #define ATKBD_CMD_SETLEDS 0x10ed
130 #define ATKBD_CMD_GSCANSET 0x11f0
131 #define ATKBD_CMD_SSCANSET 0x10f0
132 #define ATKBD_CMD_GETID 0x02f2
133 #define ATKBD_CMD_SETREP 0x10f3
134 #define ATKBD_CMD_ENABLE 0x00f4
135 #define ATKBD_CMD_RESET_DIS 0x00f5
136 #define ATKBD_CMD_SETALL_MBR 0x00fa
137 #define ATKBD_CMD_RESET_BAT 0x02ff
138 #define ATKBD_CMD_RESEND 0x00fe
139 #define ATKBD_CMD_EX_ENABLE 0x10ea
140 #define ATKBD_CMD_EX_SETLEDS 0x20eb
141 #define ATKBD_CMD_OK_GETID 0x02e8
142
143 #define ATKBD_RET_ACK 0xfa
144 #define ATKBD_RET_NAK 0xfe
145 #define ATKBD_RET_BAT 0xaa
146 #define ATKBD_RET_EMUL0 0xe0
147 #define ATKBD_RET_EMUL1 0xe1
148 #define ATKBD_RET_RELEASE 0xf0
149 #define ATKBD_RET_HANJA 0xf1
150 #define ATKBD_RET_HANGEUL 0xf2
151 #define ATKBD_RET_ERR 0xff
152
153 #define ATKBD_KEY_UNKNOWN 0
154 #define ATKBD_KEY_NULL 255
155
156 #define ATKBD_SCR_1 254
157 #define ATKBD_SCR_2 253
158 #define ATKBD_SCR_4 252
159 #define ATKBD_SCR_8 251
160 #define ATKBD_SCR_CLICK 250
161 #define ATKBD_SCR_LEFT 249
162 #define ATKBD_SCR_RIGHT 248
163
164 #define ATKBD_SPECIAL 248
165
166 #define ATKBD_LED_EVENT_BIT 0
167 #define ATKBD_REP_EVENT_BIT 1
168
169 #define ATKBD_XL_ERR 0x01
170 #define ATKBD_XL_BAT 0x02
171 #define ATKBD_XL_ACK 0x04
172 #define ATKBD_XL_NAK 0x08
173 #define ATKBD_XL_HANGEUL 0x10
174 #define ATKBD_XL_HANJA 0x20
175
176 static struct {
177 unsigned char keycode;
178 unsigned char set2;
179 } atkbd_scroll_keys[] = {
180 { ATKBD_SCR_1, 0xc5 },
181 { ATKBD_SCR_2, 0x9d },
182 { ATKBD_SCR_4, 0xa4 },
183 { ATKBD_SCR_8, 0x9b },
184 { ATKBD_SCR_CLICK, 0xe0 },
185 { ATKBD_SCR_LEFT, 0xcb },
186 { ATKBD_SCR_RIGHT, 0xd2 },
187 };
188
189 /*
190 * The atkbd control structure
191 */
192
193 struct atkbd {
194
195 struct ps2dev ps2dev;
196 struct input_dev *dev;
197
198 /* Written only during init */
199 char name[64];
200 char phys[32];
201
202 unsigned short id;
203 unsigned char keycode[512];
204 DECLARE_BITMAP(force_release_mask, 512);
205 unsigned char set;
206 unsigned char translated;
207 unsigned char extra;
208 unsigned char write;
209 unsigned char softrepeat;
210 unsigned char softraw;
211 unsigned char scroll;
212 unsigned char enabled;
213
214 /* Accessed only from interrupt */
215 unsigned char emul;
216 unsigned char resend;
217 unsigned char release;
218 unsigned long xl_bit;
219 unsigned int last;
220 unsigned long time;
221 unsigned long err_count;
222
223 struct delayed_work event_work;
224 unsigned long event_jiffies;
225 struct mutex event_mutex;
226 unsigned long event_mask;
227 };
228
229 /*
230 * System-specific ketymap fixup routine
231 */
232 static void (*atkbd_platform_fixup)(struct atkbd *);
233
234 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
235 ssize_t (*handler)(struct atkbd *, char *));
236 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
237 ssize_t (*handler)(struct atkbd *, const char *, size_t));
238 #define ATKBD_DEFINE_ATTR(_name) \
239 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
240 static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \
241 static ssize_t atkbd_do_show_##_name(struct device *d, \
242 struct device_attribute *attr, char *b) \
243 { \
244 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
245 } \
246 static ssize_t atkbd_do_set_##_name(struct device *d, \
247 struct device_attribute *attr, const char *b, size_t s) \
248 { \
249 return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name); \
250 } \
251 static struct device_attribute atkbd_attr_##_name = \
252 __ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name);
253
254 ATKBD_DEFINE_ATTR(extra);
255 ATKBD_DEFINE_ATTR(scroll);
256 ATKBD_DEFINE_ATTR(set);
257 ATKBD_DEFINE_ATTR(softrepeat);
258 ATKBD_DEFINE_ATTR(softraw);
259
260 #define ATKBD_DEFINE_RO_ATTR(_name) \
261 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
262 static ssize_t atkbd_do_show_##_name(struct device *d, \
263 struct device_attribute *attr, char *b) \
264 { \
265 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
266 } \
267 static struct device_attribute atkbd_attr_##_name = \
268 __ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL);
269
270 ATKBD_DEFINE_RO_ATTR(err_count);
271
272 static struct attribute *atkbd_attributes[] = {
273 &atkbd_attr_extra.attr,
274 &atkbd_attr_scroll.attr,
275 &atkbd_attr_set.attr,
276 &atkbd_attr_softrepeat.attr,
277 &atkbd_attr_softraw.attr,
278 &atkbd_attr_err_count.attr,
279 NULL
280 };
281
282 static struct attribute_group atkbd_attribute_group = {
283 .attrs = atkbd_attributes,
284 };
285
286 static const unsigned int xl_table[] = {
287 ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK,
288 ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL,
289 };
290
291 /*
292 * Checks if we should mangle the scancode to extract 'release' bit
293 * in translated mode.
294 */
295 static int atkbd_need_xlate(unsigned long xl_bit, unsigned char code)
296 {
297 int i;
298
299 if (code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1)
300 return 0;
301
302 for (i = 0; i < ARRAY_SIZE(xl_table); i++)
303 if (code == xl_table[i])
304 return test_bit(i, &xl_bit);
305
306 return 1;
307 }
308
309 /*
310 * Calculates new value of xl_bit so the driver can distinguish
311 * between make/break pair of scancodes for select keys and PS/2
312 * protocol responses.
313 */
314 static void atkbd_calculate_xl_bit(struct atkbd *atkbd, unsigned char code)
315 {
316 int i;
317
318 for (i = 0; i < ARRAY_SIZE(xl_table); i++) {
319 if (!((code ^ xl_table[i]) & 0x7f)) {
320 if (code & 0x80)
321 __clear_bit(i, &atkbd->xl_bit);
322 else
323 __set_bit(i, &atkbd->xl_bit);
324 break;
325 }
326 }
327 }
328
329 /*
330 * Encode the scancode, 0xe0 prefix, and high bit into a single integer,
331 * keeping kernel 2.4 compatibility for set 2
332 */
333 static unsigned int atkbd_compat_scancode(struct atkbd *atkbd, unsigned int code)
334 {
335 if (atkbd->set == 3) {
336 if (atkbd->emul == 1)
337 code |= 0x100;
338 } else {
339 code = (code & 0x7f) | ((code & 0x80) << 1);
340 if (atkbd->emul == 1)
341 code |= 0x80;
342 }
343
344 return code;
345 }
346
347 /*
348 * atkbd_interrupt(). Here takes place processing of data received from
349 * the keyboard into events.
350 */
351
352 static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data,
353 unsigned int flags)
354 {
355 struct atkbd *atkbd = serio_get_drvdata(serio);
356 struct input_dev *dev = atkbd->dev;
357 unsigned int code = data;
358 int scroll = 0, hscroll = 0, click = -1;
359 int value;
360 unsigned char keycode;
361
362 #ifdef ATKBD_DEBUG
363 printk(KERN_DEBUG "atkbd.c: Received %02x flags %02x\n", data, flags);
364 #endif
365
366 #if !defined(__i386__) && !defined (__x86_64__)
367 if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) {
368 printk(KERN_WARNING "atkbd.c: frame/parity error: %02x\n", flags);
369 serio_write(serio, ATKBD_CMD_RESEND);
370 atkbd->resend = 1;
371 goto out;
372 }
373
374 if (!flags && data == ATKBD_RET_ACK)
375 atkbd->resend = 0;
376 #endif
377
378 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_ACK))
379 if (ps2_handle_ack(&atkbd->ps2dev, data))
380 goto out;
381
382 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_CMD))
383 if (ps2_handle_response(&atkbd->ps2dev, data))
384 goto out;
385
386 if (!atkbd->enabled)
387 goto out;
388
389 input_event(dev, EV_MSC, MSC_RAW, code);
390
391 if (atkbd->translated) {
392
393 if (atkbd->emul || atkbd_need_xlate(atkbd->xl_bit, code)) {
394 atkbd->release = code >> 7;
395 code &= 0x7f;
396 }
397
398 if (!atkbd->emul)
399 atkbd_calculate_xl_bit(atkbd, data);
400 }
401
402 switch (code) {
403 case ATKBD_RET_BAT:
404 atkbd->enabled = 0;
405 serio_reconnect(atkbd->ps2dev.serio);
406 goto out;
407 case ATKBD_RET_EMUL0:
408 atkbd->emul = 1;
409 goto out;
410 case ATKBD_RET_EMUL1:
411 atkbd->emul = 2;
412 goto out;
413 case ATKBD_RET_RELEASE:
414 atkbd->release = 1;
415 goto out;
416 case ATKBD_RET_ACK:
417 case ATKBD_RET_NAK:
418 if (printk_ratelimit())
419 printk(KERN_WARNING "atkbd.c: Spurious %s on %s. "
420 "Some program might be trying access hardware directly.\n",
421 data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys);
422 goto out;
423 case ATKBD_RET_ERR:
424 atkbd->err_count++;
425 #ifdef ATKBD_DEBUG
426 printk(KERN_DEBUG "atkbd.c: Keyboard on %s reports too many keys pressed.\n", serio->phys);
427 #endif
428 goto out;
429 }
430
431 code = atkbd_compat_scancode(atkbd, code);
432
433 if (atkbd->emul && --atkbd->emul)
434 goto out;
435
436 keycode = atkbd->keycode[code];
437
438 if (keycode != ATKBD_KEY_NULL)
439 input_event(dev, EV_MSC, MSC_SCAN, code);
440
441 switch (keycode) {
442 case ATKBD_KEY_NULL:
443 break;
444 case ATKBD_KEY_UNKNOWN:
445 printk(KERN_WARNING
446 "atkbd.c: Unknown key %s (%s set %d, code %#x on %s).\n",
447 atkbd->release ? "released" : "pressed",
448 atkbd->translated ? "translated" : "raw",
449 atkbd->set, code, serio->phys);
450 printk(KERN_WARNING
451 "atkbd.c: Use 'setkeycodes %s%02x <keycode>' to make it known.\n",
452 code & 0x80 ? "e0" : "", code & 0x7f);
453 input_sync(dev);
454 break;
455 case ATKBD_SCR_1:
456 scroll = 1 - atkbd->release * 2;
457 break;
458 case ATKBD_SCR_2:
459 scroll = 2 - atkbd->release * 4;
460 break;
461 case ATKBD_SCR_4:
462 scroll = 4 - atkbd->release * 8;
463 break;
464 case ATKBD_SCR_8:
465 scroll = 8 - atkbd->release * 16;
466 break;
467 case ATKBD_SCR_CLICK:
468 click = !atkbd->release;
469 break;
470 case ATKBD_SCR_LEFT:
471 hscroll = -1;
472 break;
473 case ATKBD_SCR_RIGHT:
474 hscroll = 1;
475 break;
476 default:
477 if (atkbd->release) {
478 value = 0;
479 atkbd->last = 0;
480 } else if (!atkbd->softrepeat && test_bit(keycode, dev->key)) {
481 /* Workaround Toshiba laptop multiple keypress */
482 value = time_before(jiffies, atkbd->time) && atkbd->last == code ? 1 : 2;
483 } else {
484 value = 1;
485 atkbd->last = code;
486 atkbd->time = jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]) / 2;
487 }
488
489 input_event(dev, EV_KEY, keycode, value);
490 input_sync(dev);
491
492 if (value && test_bit(code, atkbd->force_release_mask)) {
493 input_report_key(dev, keycode, 0);
494 input_sync(dev);
495 }
496 }
497
498 if (atkbd->scroll) {
499 if (click != -1)
500 input_report_key(dev, BTN_MIDDLE, click);
501 input_report_rel(dev, REL_WHEEL, scroll);
502 input_report_rel(dev, REL_HWHEEL, hscroll);
503 input_sync(dev);
504 }
505
506 atkbd->release = 0;
507 out:
508 return IRQ_HANDLED;
509 }
510
511 static int atkbd_set_repeat_rate(struct atkbd *atkbd)
512 {
513 const short period[32] =
514 { 33, 37, 42, 46, 50, 54, 58, 63, 67, 75, 83, 92, 100, 109, 116, 125,
515 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 };
516 const short delay[4] =
517 { 250, 500, 750, 1000 };
518
519 struct input_dev *dev = atkbd->dev;
520 unsigned char param;
521 int i = 0, j = 0;
522
523 while (i < ARRAY_SIZE(period) - 1 && period[i] < dev->rep[REP_PERIOD])
524 i++;
525 dev->rep[REP_PERIOD] = period[i];
526
527 while (j < ARRAY_SIZE(delay) - 1 && delay[j] < dev->rep[REP_DELAY])
528 j++;
529 dev->rep[REP_DELAY] = delay[j];
530
531 param = i | (j << 5);
532 return ps2_command(&atkbd->ps2dev, &param, ATKBD_CMD_SETREP);
533 }
534
535 static int atkbd_set_leds(struct atkbd *atkbd)
536 {
537 struct input_dev *dev = atkbd->dev;
538 unsigned char param[2];
539
540 param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0)
541 | (test_bit(LED_NUML, dev->led) ? 2 : 0)
542 | (test_bit(LED_CAPSL, dev->led) ? 4 : 0);
543 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS))
544 return -1;
545
546 if (atkbd->extra) {
547 param[0] = 0;
548 param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0)
549 | (test_bit(LED_SLEEP, dev->led) ? 0x02 : 0)
550 | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0)
551 | (test_bit(LED_MISC, dev->led) ? 0x10 : 0)
552 | (test_bit(LED_MUTE, dev->led) ? 0x20 : 0);
553 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS))
554 return -1;
555 }
556
557 return 0;
558 }
559
560 /*
561 * atkbd_event_work() is used to complete processing of events that
562 * can not be processed by input_event() which is often called from
563 * interrupt context.
564 */
565
566 static void atkbd_event_work(struct work_struct *work)
567 {
568 struct atkbd *atkbd = container_of(work, struct atkbd, event_work.work);
569
570 mutex_lock(&atkbd->event_mutex);
571
572 if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask))
573 atkbd_set_leds(atkbd);
574
575 if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask))
576 atkbd_set_repeat_rate(atkbd);
577
578 mutex_unlock(&atkbd->event_mutex);
579 }
580
581 /*
582 * Schedule switch for execution. We need to throttle requests,
583 * otherwise keyboard may become unresponsive.
584 */
585 static void atkbd_schedule_event_work(struct atkbd *atkbd, int event_bit)
586 {
587 unsigned long delay = msecs_to_jiffies(50);
588
589 if (time_after(jiffies, atkbd->event_jiffies + delay))
590 delay = 0;
591
592 atkbd->event_jiffies = jiffies;
593 set_bit(event_bit, &atkbd->event_mask);
594 wmb();
595 schedule_delayed_work(&atkbd->event_work, delay);
596 }
597
598 /*
599 * Event callback from the input module. Events that change the state of
600 * the hardware are processed here. If action can not be performed in
601 * interrupt context it is offloaded to atkbd_event_work.
602 */
603
604 static int atkbd_event(struct input_dev *dev,
605 unsigned int type, unsigned int code, int value)
606 {
607 struct atkbd *atkbd = input_get_drvdata(dev);
608
609 if (!atkbd->write)
610 return -1;
611
612 switch (type) {
613
614 case EV_LED:
615 atkbd_schedule_event_work(atkbd, ATKBD_LED_EVENT_BIT);
616 return 0;
617
618 case EV_REP:
619 if (!atkbd->softrepeat)
620 atkbd_schedule_event_work(atkbd, ATKBD_REP_EVENT_BIT);
621 return 0;
622 }
623
624 return -1;
625 }
626
627 /*
628 * atkbd_enable() signals that interrupt handler is allowed to
629 * generate input events.
630 */
631
632 static inline void atkbd_enable(struct atkbd *atkbd)
633 {
634 serio_pause_rx(atkbd->ps2dev.serio);
635 atkbd->enabled = 1;
636 serio_continue_rx(atkbd->ps2dev.serio);
637 }
638
639 /*
640 * atkbd_disable() tells input handler that all incoming data except
641 * for ACKs and command response should be dropped.
642 */
643
644 static inline void atkbd_disable(struct atkbd *atkbd)
645 {
646 serio_pause_rx(atkbd->ps2dev.serio);
647 atkbd->enabled = 0;
648 serio_continue_rx(atkbd->ps2dev.serio);
649 }
650
651 /*
652 * atkbd_probe() probes for an AT keyboard on a serio port.
653 */
654
655 static int atkbd_probe(struct atkbd *atkbd)
656 {
657 struct ps2dev *ps2dev = &atkbd->ps2dev;
658 unsigned char param[2];
659
660 /*
661 * Some systems, where the bit-twiddling when testing the io-lines of the
662 * controller may confuse the keyboard need a full reset of the keyboard. On
663 * these systems the BIOS also usually doesn't do it for us.
664 */
665
666 if (atkbd_reset)
667 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT))
668 printk(KERN_WARNING "atkbd.c: keyboard reset failed on %s\n", ps2dev->serio->phys);
669
670 /*
671 * Then we check the keyboard ID. We should get 0xab83 under normal conditions.
672 * Some keyboards report different values, but the first byte is always 0xab or
673 * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this
674 * should make sure we don't try to set the LEDs on it.
675 */
676
677 param[0] = param[1] = 0xa5; /* initialize with invalid values */
678 if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) {
679
680 /*
681 * If the get ID command failed, we check if we can at least set the LEDs on
682 * the keyboard. This should work on every keyboard out there. It also turns
683 * the LEDs off, which we want anyway.
684 */
685 param[0] = 0;
686 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
687 return -1;
688 atkbd->id = 0xabba;
689 return 0;
690 }
691
692 if (!ps2_is_keyboard_id(param[0]))
693 return -1;
694
695 atkbd->id = (param[0] << 8) | param[1];
696
697 if (atkbd->id == 0xaca1 && atkbd->translated) {
698 printk(KERN_ERR "atkbd.c: NCD terminal keyboards are only supported on non-translating\n");
699 printk(KERN_ERR "atkbd.c: controllers. Use i8042.direct=1 to disable translation.\n");
700 return -1;
701 }
702
703 return 0;
704 }
705
706 /*
707 * atkbd_select_set checks if a keyboard has a working Set 3 support, and
708 * sets it into that. Unfortunately there are keyboards that can be switched
709 * to Set 3, but don't work well in that (BTC Multimedia ...)
710 */
711
712 static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra)
713 {
714 struct ps2dev *ps2dev = &atkbd->ps2dev;
715 unsigned char param[2];
716
717 atkbd->extra = 0;
718 /*
719 * For known special keyboards we can go ahead and set the correct set.
720 * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and
721 * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards.
722 */
723
724 if (atkbd->translated)
725 return 2;
726
727 if (atkbd->id == 0xaca1) {
728 param[0] = 3;
729 ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET);
730 return 3;
731 }
732
733 if (allow_extra) {
734 param[0] = 0x71;
735 if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) {
736 atkbd->extra = 1;
737 return 2;
738 }
739 }
740
741 if (target_set != 3)
742 return 2;
743
744 if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) {
745 atkbd->id = param[0] << 8 | param[1];
746 return 2;
747 }
748
749 param[0] = 3;
750 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
751 return 2;
752
753 param[0] = 0;
754 if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET))
755 return 2;
756
757 if (param[0] != 3) {
758 param[0] = 2;
759 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
760 return 2;
761 }
762
763 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR);
764
765 return 3;
766 }
767
768 static int atkbd_activate(struct atkbd *atkbd)
769 {
770 struct ps2dev *ps2dev = &atkbd->ps2dev;
771 unsigned char param[1];
772
773 /*
774 * Set the LEDs to a defined state.
775 */
776
777 param[0] = 0;
778 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
779 return -1;
780
781 /*
782 * Set autorepeat to fastest possible.
783 */
784
785 param[0] = 0;
786 if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP))
787 return -1;
788
789 /*
790 * Enable the keyboard to receive keystrokes.
791 */
792
793 if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) {
794 printk(KERN_ERR "atkbd.c: Failed to enable keyboard on %s\n",
795 ps2dev->serio->phys);
796 return -1;
797 }
798
799 return 0;
800 }
801
802 /*
803 * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a
804 * reboot.
805 */
806
807 static void atkbd_cleanup(struct serio *serio)
808 {
809 struct atkbd *atkbd = serio_get_drvdata(serio);
810
811 atkbd_disable(atkbd);
812 ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_BAT);
813 }
814
815
816 /*
817 * atkbd_disconnect() closes and frees.
818 */
819
820 static void atkbd_disconnect(struct serio *serio)
821 {
822 struct atkbd *atkbd = serio_get_drvdata(serio);
823
824 atkbd_disable(atkbd);
825
826 /* make sure we don't have a command in flight */
827 flush_scheduled_work();
828
829 sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
830 input_unregister_device(atkbd->dev);
831 serio_close(serio);
832 serio_set_drvdata(serio, NULL);
833 kfree(atkbd);
834 }
835
836 /*
837 * Most special keys (Fn+F?) on Dell Latitudes do not generate release
838 * events so we have to do it ourselves.
839 */
840 static void atkbd_latitude_keymap_fixup(struct atkbd *atkbd)
841 {
842 const unsigned int forced_release_keys[] = {
843 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8f, 0x93,
844 };
845 int i;
846
847 if (atkbd->set == 2)
848 for (i = 0; i < ARRAY_SIZE(forced_release_keys); i++)
849 __set_bit(forced_release_keys[i],
850 atkbd->force_release_mask);
851 }
852
853 /*
854 * atkbd_set_keycode_table() initializes keyboard's keycode table
855 * according to the selected scancode set
856 */
857
858 static void atkbd_set_keycode_table(struct atkbd *atkbd)
859 {
860 unsigned int scancode;
861 int i, j;
862
863 memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
864 bitmap_zero(atkbd->force_release_mask, 512);
865
866 if (atkbd->translated) {
867 for (i = 0; i < 128; i++) {
868 scancode = atkbd_unxlate_table[i];
869 atkbd->keycode[i] = atkbd_set2_keycode[scancode];
870 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80];
871 if (atkbd->scroll)
872 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
873 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2)
874 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
875 }
876 } else if (atkbd->set == 3) {
877 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
878 } else {
879 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
880
881 if (atkbd->scroll)
882 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) {
883 scancode = atkbd_scroll_keys[i].set2;
884 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode;
885 }
886 }
887
888 /*
889 * HANGEUL and HANJA keys do not send release events so we need to
890 * generate such events ourselves
891 */
892 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL);
893 atkbd->keycode[scancode] = KEY_HANGEUL;
894 __set_bit(scancode, atkbd->force_release_mask);
895
896 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA);
897 atkbd->keycode[scancode] = KEY_HANJA;
898 __set_bit(scancode, atkbd->force_release_mask);
899
900 /*
901 * Perform additional fixups
902 */
903 if (atkbd_platform_fixup)
904 atkbd_platform_fixup(atkbd);
905 }
906
907 /*
908 * atkbd_set_device_attrs() sets up keyboard's input device structure
909 */
910
911 static void atkbd_set_device_attrs(struct atkbd *atkbd)
912 {
913 struct input_dev *input_dev = atkbd->dev;
914 int i;
915
916 if (atkbd->extra)
917 snprintf(atkbd->name, sizeof(atkbd->name),
918 "AT Set 2 Extra keyboard");
919 else
920 snprintf(atkbd->name, sizeof(atkbd->name),
921 "AT %s Set %d keyboard",
922 atkbd->translated ? "Translated" : "Raw", atkbd->set);
923
924 snprintf(atkbd->phys, sizeof(atkbd->phys),
925 "%s/input0", atkbd->ps2dev.serio->phys);
926
927 input_dev->name = atkbd->name;
928 input_dev->phys = atkbd->phys;
929 input_dev->id.bustype = BUS_I8042;
930 input_dev->id.vendor = 0x0001;
931 input_dev->id.product = atkbd->translated ? 1 : atkbd->set;
932 input_dev->id.version = atkbd->id;
933 input_dev->event = atkbd_event;
934 input_dev->dev.parent = &atkbd->ps2dev.serio->dev;
935
936 input_set_drvdata(input_dev, atkbd);
937
938 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
939 BIT_MASK(EV_MSC);
940
941 if (atkbd->write) {
942 input_dev->evbit[0] |= BIT_MASK(EV_LED);
943 input_dev->ledbit[0] = BIT_MASK(LED_NUML) |
944 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL);
945 }
946
947 if (atkbd->extra)
948 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) |
949 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) |
950 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC);
951
952 if (!atkbd->softrepeat) {
953 input_dev->rep[REP_DELAY] = 250;
954 input_dev->rep[REP_PERIOD] = 33;
955 }
956
957 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) :
958 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN);
959
960 if (atkbd->scroll) {
961 input_dev->evbit[0] |= BIT_MASK(EV_REL);
962 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) |
963 BIT_MASK(REL_HWHEEL);
964 set_bit(BTN_MIDDLE, input_dev->keybit);
965 }
966
967 input_dev->keycode = atkbd->keycode;
968 input_dev->keycodesize = sizeof(unsigned char);
969 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
970
971 for (i = 0; i < 512; i++)
972 if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL)
973 set_bit(atkbd->keycode[i], input_dev->keybit);
974 }
975
976 /*
977 * atkbd_connect() is called when the serio module finds an interface
978 * that isn't handled yet by an appropriate device driver. We check if
979 * there is an AT keyboard out there and if yes, we register ourselves
980 * to the input module.
981 */
982
983 static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
984 {
985 struct atkbd *atkbd;
986 struct input_dev *dev;
987 int err = -ENOMEM;
988
989 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL);
990 dev = input_allocate_device();
991 if (!atkbd || !dev)
992 goto fail1;
993
994 atkbd->dev = dev;
995 ps2_init(&atkbd->ps2dev, serio);
996 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work);
997 mutex_init(&atkbd->event_mutex);
998
999 switch (serio->id.type) {
1000
1001 case SERIO_8042_XL:
1002 atkbd->translated = 1;
1003 case SERIO_8042:
1004 if (serio->write)
1005 atkbd->write = 1;
1006 break;
1007 }
1008
1009 atkbd->softraw = atkbd_softraw;
1010 atkbd->softrepeat = atkbd_softrepeat;
1011 atkbd->scroll = atkbd_scroll;
1012
1013 if (atkbd->softrepeat)
1014 atkbd->softraw = 1;
1015
1016 serio_set_drvdata(serio, atkbd);
1017
1018 err = serio_open(serio, drv);
1019 if (err)
1020 goto fail2;
1021
1022 if (atkbd->write) {
1023
1024 if (atkbd_probe(atkbd)) {
1025 err = -ENODEV;
1026 goto fail3;
1027 }
1028
1029 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
1030 atkbd_activate(atkbd);
1031
1032 } else {
1033 atkbd->set = 2;
1034 atkbd->id = 0xab00;
1035 }
1036
1037 atkbd_set_keycode_table(atkbd);
1038 atkbd_set_device_attrs(atkbd);
1039
1040 err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group);
1041 if (err)
1042 goto fail3;
1043
1044 atkbd_enable(atkbd);
1045
1046 err = input_register_device(atkbd->dev);
1047 if (err)
1048 goto fail4;
1049
1050 return 0;
1051
1052 fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
1053 fail3: serio_close(serio);
1054 fail2: serio_set_drvdata(serio, NULL);
1055 fail1: input_free_device(dev);
1056 kfree(atkbd);
1057 return err;
1058 }
1059
1060 /*
1061 * atkbd_reconnect() tries to restore keyboard into a sane state and is
1062 * most likely called on resume.
1063 */
1064
1065 static int atkbd_reconnect(struct serio *serio)
1066 {
1067 struct atkbd *atkbd = serio_get_drvdata(serio);
1068 struct serio_driver *drv = serio->drv;
1069
1070 if (!atkbd || !drv) {
1071 printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n");
1072 return -1;
1073 }
1074
1075 atkbd_disable(atkbd);
1076
1077 if (atkbd->write) {
1078 if (atkbd_probe(atkbd))
1079 return -1;
1080 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
1081 return -1;
1082
1083 atkbd_activate(atkbd);
1084
1085 /*
1086 * Restore repeat rate and LEDs (that were reset by atkbd_activate)
1087 * to pre-resume state
1088 */
1089 if (!atkbd->softrepeat)
1090 atkbd_set_repeat_rate(atkbd);
1091 atkbd_set_leds(atkbd);
1092 }
1093
1094 atkbd_enable(atkbd);
1095
1096 return 0;
1097 }
1098
1099 static struct serio_device_id atkbd_serio_ids[] = {
1100 {
1101 .type = SERIO_8042,
1102 .proto = SERIO_ANY,
1103 .id = SERIO_ANY,
1104 .extra = SERIO_ANY,
1105 },
1106 {
1107 .type = SERIO_8042_XL,
1108 .proto = SERIO_ANY,
1109 .id = SERIO_ANY,
1110 .extra = SERIO_ANY,
1111 },
1112 {
1113 .type = SERIO_RS232,
1114 .proto = SERIO_PS2SER,
1115 .id = SERIO_ANY,
1116 .extra = SERIO_ANY,
1117 },
1118 { 0 }
1119 };
1120
1121 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
1122
1123 static struct serio_driver atkbd_drv = {
1124 .driver = {
1125 .name = "atkbd",
1126 },
1127 .description = DRIVER_DESC,
1128 .id_table = atkbd_serio_ids,
1129 .interrupt = atkbd_interrupt,
1130 .connect = atkbd_connect,
1131 .reconnect = atkbd_reconnect,
1132 .disconnect = atkbd_disconnect,
1133 .cleanup = atkbd_cleanup,
1134 };
1135
1136 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
1137 ssize_t (*handler)(struct atkbd *, char *))
1138 {
1139 struct serio *serio = to_serio_port(dev);
1140 int retval;
1141
1142 retval = serio_pin_driver(serio);
1143 if (retval)
1144 return retval;
1145
1146 if (serio->drv != &atkbd_drv) {
1147 retval = -ENODEV;
1148 goto out;
1149 }
1150
1151 retval = handler((struct atkbd *)serio_get_drvdata(serio), buf);
1152
1153 out:
1154 serio_unpin_driver(serio);
1155 return retval;
1156 }
1157
1158 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
1159 ssize_t (*handler)(struct atkbd *, const char *, size_t))
1160 {
1161 struct serio *serio = to_serio_port(dev);
1162 struct atkbd *atkbd;
1163 int retval;
1164
1165 retval = serio_pin_driver(serio);
1166 if (retval)
1167 return retval;
1168
1169 if (serio->drv != &atkbd_drv) {
1170 retval = -ENODEV;
1171 goto out;
1172 }
1173
1174 atkbd = serio_get_drvdata(serio);
1175 atkbd_disable(atkbd);
1176 retval = handler(atkbd, buf, count);
1177 atkbd_enable(atkbd);
1178
1179 out:
1180 serio_unpin_driver(serio);
1181 return retval;
1182 }
1183
1184 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
1185 {
1186 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
1187 }
1188
1189 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
1190 {
1191 struct input_dev *old_dev, *new_dev;
1192 unsigned long value;
1193 char *rest;
1194 int err;
1195 unsigned char old_extra, old_set;
1196
1197 if (!atkbd->write)
1198 return -EIO;
1199
1200 value = simple_strtoul(buf, &rest, 10);
1201 if (*rest || value > 1)
1202 return -EINVAL;
1203
1204 if (atkbd->extra != value) {
1205 /*
1206 * Since device's properties will change we need to
1207 * unregister old device. But allocate and register
1208 * new one first to make sure we have it.
1209 */
1210 old_dev = atkbd->dev;
1211 old_extra = atkbd->extra;
1212 old_set = atkbd->set;
1213
1214 new_dev = input_allocate_device();
1215 if (!new_dev)
1216 return -ENOMEM;
1217
1218 atkbd->dev = new_dev;
1219 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
1220 atkbd_activate(atkbd);
1221 atkbd_set_keycode_table(atkbd);
1222 atkbd_set_device_attrs(atkbd);
1223
1224 err = input_register_device(atkbd->dev);
1225 if (err) {
1226 input_free_device(new_dev);
1227
1228 atkbd->dev = old_dev;
1229 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1230 atkbd_set_keycode_table(atkbd);
1231 atkbd_set_device_attrs(atkbd);
1232
1233 return err;
1234 }
1235 input_unregister_device(old_dev);
1236
1237 }
1238 return count;
1239 }
1240
1241 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
1242 {
1243 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
1244 }
1245
1246 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
1247 {
1248 struct input_dev *old_dev, *new_dev;
1249 unsigned long value;
1250 char *rest;
1251 int err;
1252 unsigned char old_scroll;
1253
1254 value = simple_strtoul(buf, &rest, 10);
1255 if (*rest || value > 1)
1256 return -EINVAL;
1257
1258 if (atkbd->scroll != value) {
1259 old_dev = atkbd->dev;
1260 old_scroll = atkbd->scroll;
1261
1262 new_dev = input_allocate_device();
1263 if (!new_dev)
1264 return -ENOMEM;
1265
1266 atkbd->dev = new_dev;
1267 atkbd->scroll = value;
1268 atkbd_set_keycode_table(atkbd);
1269 atkbd_set_device_attrs(atkbd);
1270
1271 err = input_register_device(atkbd->dev);
1272 if (err) {
1273 input_free_device(new_dev);
1274
1275 atkbd->scroll = old_scroll;
1276 atkbd->dev = old_dev;
1277 atkbd_set_keycode_table(atkbd);
1278 atkbd_set_device_attrs(atkbd);
1279
1280 return err;
1281 }
1282 input_unregister_device(old_dev);
1283 }
1284 return count;
1285 }
1286
1287 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
1288 {
1289 return sprintf(buf, "%d\n", atkbd->set);
1290 }
1291
1292 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
1293 {
1294 struct input_dev *old_dev, *new_dev;
1295 unsigned long value;
1296 char *rest;
1297 int err;
1298 unsigned char old_set, old_extra;
1299
1300 if (!atkbd->write)
1301 return -EIO;
1302
1303 value = simple_strtoul(buf, &rest, 10);
1304 if (*rest || (value != 2 && value != 3))
1305 return -EINVAL;
1306
1307 if (atkbd->set != value) {
1308 old_dev = atkbd->dev;
1309 old_extra = atkbd->extra;
1310 old_set = atkbd->set;
1311
1312 new_dev = input_allocate_device();
1313 if (!new_dev)
1314 return -ENOMEM;
1315
1316 atkbd->dev = new_dev;
1317 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra);
1318 atkbd_activate(atkbd);
1319 atkbd_set_keycode_table(atkbd);
1320 atkbd_set_device_attrs(atkbd);
1321
1322 err = input_register_device(atkbd->dev);
1323 if (err) {
1324 input_free_device(new_dev);
1325
1326 atkbd->dev = old_dev;
1327 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1328 atkbd_set_keycode_table(atkbd);
1329 atkbd_set_device_attrs(atkbd);
1330
1331 return err;
1332 }
1333 input_unregister_device(old_dev);
1334 }
1335 return count;
1336 }
1337
1338 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
1339 {
1340 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
1341 }
1342
1343 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
1344 {
1345 struct input_dev *old_dev, *new_dev;
1346 unsigned long value;
1347 char *rest;
1348 int err;
1349 unsigned char old_softrepeat, old_softraw;
1350
1351 if (!atkbd->write)
1352 return -EIO;
1353
1354 value = simple_strtoul(buf, &rest, 10);
1355 if (*rest || value > 1)
1356 return -EINVAL;
1357
1358 if (atkbd->softrepeat != value) {
1359 old_dev = atkbd->dev;
1360 old_softrepeat = atkbd->softrepeat;
1361 old_softraw = atkbd->softraw;
1362
1363 new_dev = input_allocate_device();
1364 if (!new_dev)
1365 return -ENOMEM;
1366
1367 atkbd->dev = new_dev;
1368 atkbd->softrepeat = value;
1369 if (atkbd->softrepeat)
1370 atkbd->softraw = 1;
1371 atkbd_set_device_attrs(atkbd);
1372
1373 err = input_register_device(atkbd->dev);
1374 if (err) {
1375 input_free_device(new_dev);
1376
1377 atkbd->dev = old_dev;
1378 atkbd->softrepeat = old_softrepeat;
1379 atkbd->softraw = old_softraw;
1380 atkbd_set_device_attrs(atkbd);
1381
1382 return err;
1383 }
1384 input_unregister_device(old_dev);
1385 }
1386 return count;
1387 }
1388
1389
1390 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
1391 {
1392 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
1393 }
1394
1395 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
1396 {
1397 struct input_dev *old_dev, *new_dev;
1398 unsigned long value;
1399 char *rest;
1400 int err;
1401 unsigned char old_softraw;
1402
1403 value = simple_strtoul(buf, &rest, 10);
1404 if (*rest || value > 1)
1405 return -EINVAL;
1406
1407 if (atkbd->softraw != value) {
1408 old_dev = atkbd->dev;
1409 old_softraw = atkbd->softraw;
1410
1411 new_dev = input_allocate_device();
1412 if (!new_dev)
1413 return -ENOMEM;
1414
1415 atkbd->dev = new_dev;
1416 atkbd->softraw = value;
1417 atkbd_set_device_attrs(atkbd);
1418
1419 err = input_register_device(atkbd->dev);
1420 if (err) {
1421 input_free_device(new_dev);
1422
1423 atkbd->dev = old_dev;
1424 atkbd->softraw = old_softraw;
1425 atkbd_set_device_attrs(atkbd);
1426
1427 return err;
1428 }
1429 input_unregister_device(old_dev);
1430 }
1431 return count;
1432 }
1433
1434 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
1435 {
1436 return sprintf(buf, "%lu\n", atkbd->err_count);
1437 }
1438
1439 static int __init atkbd_setup_fixup(const struct dmi_system_id *id)
1440 {
1441 atkbd_platform_fixup = id->driver_data;
1442 return 0;
1443 }
1444
1445 static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = {
1446 {
1447 .ident = "Dell Latitude series",
1448 .matches = {
1449 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
1450 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude"),
1451 },
1452 .callback = atkbd_setup_fixup,
1453 .driver_data = atkbd_latitude_keymap_fixup,
1454 },
1455 { }
1456 };
1457
1458 static int __init atkbd_init(void)
1459 {
1460 dmi_check_system(atkbd_dmi_quirk_table);
1461
1462 return serio_register_driver(&atkbd_drv);
1463 }
1464
1465 static void __exit atkbd_exit(void)
1466 {
1467 serio_unregister_driver(&atkbd_drv);
1468 }
1469
1470 module_init(atkbd_init);
1471 module_exit(atkbd_exit);
kmemtrace - Kernel memory tracer