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coredump: make mm->core_state visible to ->core_dump()
[linux-2.6/mini2440.git] / drivers / input / keyboard / atkbd.c
blobb1ce10f50bcfcf7a14eca2c8c4cd9606efaecd90
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 const unsigned short 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 const unsigned short 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 const unsigned short 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 ATKBD_SCR_RIGHT
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 const 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 short 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 short 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 * Perform fixup for HP system that doesn't generate release
855 * for its video switch
856 */
857 static void atkbd_hp_keymap_fixup(struct atkbd *atkbd)
858 {
859 const unsigned int forced_release_keys[] = {
860 0x94,
861 };
862 int i;
863
864 if (atkbd->set == 2)
865 for (i = 0; i < ARRAY_SIZE(forced_release_keys); i++)
866 __set_bit(forced_release_keys[i],
867 atkbd->force_release_mask);
868 }
869
870 /*
871 * atkbd_set_keycode_table() initializes keyboard's keycode table
872 * according to the selected scancode set
873 */
874
875 static void atkbd_set_keycode_table(struct atkbd *atkbd)
876 {
877 unsigned int scancode;
878 int i, j;
879
880 memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
881 bitmap_zero(atkbd->force_release_mask, 512);
882
883 if (atkbd->translated) {
884 for (i = 0; i < 128; i++) {
885 scancode = atkbd_unxlate_table[i];
886 atkbd->keycode[i] = atkbd_set2_keycode[scancode];
887 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80];
888 if (atkbd->scroll)
889 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
890 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2)
891 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
892 }
893 } else if (atkbd->set == 3) {
894 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
895 } else {
896 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
897
898 if (atkbd->scroll)
899 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) {
900 scancode = atkbd_scroll_keys[i].set2;
901 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode;
902 }
903 }
904
905 /*
906 * HANGEUL and HANJA keys do not send release events so we need to
907 * generate such events ourselves
908 */
909 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL);
910 atkbd->keycode[scancode] = KEY_HANGEUL;
911 __set_bit(scancode, atkbd->force_release_mask);
912
913 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA);
914 atkbd->keycode[scancode] = KEY_HANJA;
915 __set_bit(scancode, atkbd->force_release_mask);
916
917 /*
918 * Perform additional fixups
919 */
920 if (atkbd_platform_fixup)
921 atkbd_platform_fixup(atkbd);
922 }
923
924 /*
925 * atkbd_set_device_attrs() sets up keyboard's input device structure
926 */
927
928 static void atkbd_set_device_attrs(struct atkbd *atkbd)
929 {
930 struct input_dev *input_dev = atkbd->dev;
931 int i;
932
933 if (atkbd->extra)
934 snprintf(atkbd->name, sizeof(atkbd->name),
935 "AT Set 2 Extra keyboard");
936 else
937 snprintf(atkbd->name, sizeof(atkbd->name),
938 "AT %s Set %d keyboard",
939 atkbd->translated ? "Translated" : "Raw", atkbd->set);
940
941 snprintf(atkbd->phys, sizeof(atkbd->phys),
942 "%s/input0", atkbd->ps2dev.serio->phys);
943
944 input_dev->name = atkbd->name;
945 input_dev->phys = atkbd->phys;
946 input_dev->id.bustype = BUS_I8042;
947 input_dev->id.vendor = 0x0001;
948 input_dev->id.product = atkbd->translated ? 1 : atkbd->set;
949 input_dev->id.version = atkbd->id;
950 input_dev->event = atkbd_event;
951 input_dev->dev.parent = &atkbd->ps2dev.serio->dev;
952
953 input_set_drvdata(input_dev, atkbd);
954
955 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
956 BIT_MASK(EV_MSC);
957
958 if (atkbd->write) {
959 input_dev->evbit[0] |= BIT_MASK(EV_LED);
960 input_dev->ledbit[0] = BIT_MASK(LED_NUML) |
961 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL);
962 }
963
964 if (atkbd->extra)
965 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) |
966 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) |
967 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC);
968
969 if (!atkbd->softrepeat) {
970 input_dev->rep[REP_DELAY] = 250;
971 input_dev->rep[REP_PERIOD] = 33;
972 }
973
974 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) :
975 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN);
976
977 if (atkbd->scroll) {
978 input_dev->evbit[0] |= BIT_MASK(EV_REL);
979 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) |
980 BIT_MASK(REL_HWHEEL);
981 __set_bit(BTN_MIDDLE, input_dev->keybit);
982 }
983
984 input_dev->keycode = atkbd->keycode;
985 input_dev->keycodesize = sizeof(unsigned short);
986 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
987
988 for (i = 0; i < 512; i++)
989 if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL)
990 __set_bit(atkbd->keycode[i], input_dev->keybit);
991 }
992
993 /*
994 * atkbd_connect() is called when the serio module finds an interface
995 * that isn't handled yet by an appropriate device driver. We check if
996 * there is an AT keyboard out there and if yes, we register ourselves
997 * to the input module.
998 */
999
1000 static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
1001 {
1002 struct atkbd *atkbd;
1003 struct input_dev *dev;
1004 int err = -ENOMEM;
1005
1006 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL);
1007 dev = input_allocate_device();
1008 if (!atkbd || !dev)
1009 goto fail1;
1010
1011 atkbd->dev = dev;
1012 ps2_init(&atkbd->ps2dev, serio);
1013 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work);
1014 mutex_init(&atkbd->event_mutex);
1015
1016 switch (serio->id.type) {
1017
1018 case SERIO_8042_XL:
1019 atkbd->translated = 1;
1020 case SERIO_8042:
1021 if (serio->write)
1022 atkbd->write = 1;
1023 break;
1024 }
1025
1026 atkbd->softraw = atkbd_softraw;
1027 atkbd->softrepeat = atkbd_softrepeat;
1028 atkbd->scroll = atkbd_scroll;
1029
1030 if (atkbd->softrepeat)
1031 atkbd->softraw = 1;
1032
1033 serio_set_drvdata(serio, atkbd);
1034
1035 err = serio_open(serio, drv);
1036 if (err)
1037 goto fail2;
1038
1039 if (atkbd->write) {
1040
1041 if (atkbd_probe(atkbd)) {
1042 err = -ENODEV;
1043 goto fail3;
1044 }
1045
1046 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
1047 atkbd_activate(atkbd);
1048
1049 } else {
1050 atkbd->set = 2;
1051 atkbd->id = 0xab00;
1052 }
1053
1054 atkbd_set_keycode_table(atkbd);
1055 atkbd_set_device_attrs(atkbd);
1056
1057 err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group);
1058 if (err)
1059 goto fail3;
1060
1061 atkbd_enable(atkbd);
1062
1063 err = input_register_device(atkbd->dev);
1064 if (err)
1065 goto fail4;
1066
1067 return 0;
1068
1069 fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
1070 fail3: serio_close(serio);
1071 fail2: serio_set_drvdata(serio, NULL);
1072 fail1: input_free_device(dev);
1073 kfree(atkbd);
1074 return err;
1075 }
1076
1077 /*
1078 * atkbd_reconnect() tries to restore keyboard into a sane state and is
1079 * most likely called on resume.
1080 */
1081
1082 static int atkbd_reconnect(struct serio *serio)
1083 {
1084 struct atkbd *atkbd = serio_get_drvdata(serio);
1085 struct serio_driver *drv = serio->drv;
1086
1087 if (!atkbd || !drv) {
1088 printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n");
1089 return -1;
1090 }
1091
1092 atkbd_disable(atkbd);
1093
1094 if (atkbd->write) {
1095 if (atkbd_probe(atkbd))
1096 return -1;
1097 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
1098 return -1;
1099
1100 atkbd_activate(atkbd);
1101
1102 /*
1103 * Restore repeat rate and LEDs (that were reset by atkbd_activate)
1104 * to pre-resume state
1105 */
1106 if (!atkbd->softrepeat)
1107 atkbd_set_repeat_rate(atkbd);
1108 atkbd_set_leds(atkbd);
1109 }
1110
1111 atkbd_enable(atkbd);
1112
1113 return 0;
1114 }
1115
1116 static struct serio_device_id atkbd_serio_ids[] = {
1117 {
1118 .type = SERIO_8042,
1119 .proto = SERIO_ANY,
1120 .id = SERIO_ANY,
1121 .extra = SERIO_ANY,
1122 },
1123 {
1124 .type = SERIO_8042_XL,
1125 .proto = SERIO_ANY,
1126 .id = SERIO_ANY,
1127 .extra = SERIO_ANY,
1128 },
1129 {
1130 .type = SERIO_RS232,
1131 .proto = SERIO_PS2SER,
1132 .id = SERIO_ANY,
1133 .extra = SERIO_ANY,
1134 },
1135 { 0 }
1136 };
1137
1138 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
1139
1140 static struct serio_driver atkbd_drv = {
1141 .driver = {
1142 .name = "atkbd",
1143 },
1144 .description = DRIVER_DESC,
1145 .id_table = atkbd_serio_ids,
1146 .interrupt = atkbd_interrupt,
1147 .connect = atkbd_connect,
1148 .reconnect = atkbd_reconnect,
1149 .disconnect = atkbd_disconnect,
1150 .cleanup = atkbd_cleanup,
1151 };
1152
1153 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
1154 ssize_t (*handler)(struct atkbd *, char *))
1155 {
1156 struct serio *serio = to_serio_port(dev);
1157 int retval;
1158
1159 retval = serio_pin_driver(serio);
1160 if (retval)
1161 return retval;
1162
1163 if (serio->drv != &atkbd_drv) {
1164 retval = -ENODEV;
1165 goto out;
1166 }
1167
1168 retval = handler((struct atkbd *)serio_get_drvdata(serio), buf);
1169
1170 out:
1171 serio_unpin_driver(serio);
1172 return retval;
1173 }
1174
1175 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
1176 ssize_t (*handler)(struct atkbd *, const char *, size_t))
1177 {
1178 struct serio *serio = to_serio_port(dev);
1179 struct atkbd *atkbd;
1180 int retval;
1181
1182 retval = serio_pin_driver(serio);
1183 if (retval)
1184 return retval;
1185
1186 if (serio->drv != &atkbd_drv) {
1187 retval = -ENODEV;
1188 goto out;
1189 }
1190
1191 atkbd = serio_get_drvdata(serio);
1192 atkbd_disable(atkbd);
1193 retval = handler(atkbd, buf, count);
1194 atkbd_enable(atkbd);
1195
1196 out:
1197 serio_unpin_driver(serio);
1198 return retval;
1199 }
1200
1201 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
1202 {
1203 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
1204 }
1205
1206 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
1207 {
1208 struct input_dev *old_dev, *new_dev;
1209 unsigned long value;
1210 char *rest;
1211 int err;
1212 unsigned char old_extra, old_set;
1213
1214 if (!atkbd->write)
1215 return -EIO;
1216
1217 value = simple_strtoul(buf, &rest, 10);
1218 if (*rest || value > 1)
1219 return -EINVAL;
1220
1221 if (atkbd->extra != value) {
1222 /*
1223 * Since device's properties will change we need to
1224 * unregister old device. But allocate and register
1225 * new one first to make sure we have it.
1226 */
1227 old_dev = atkbd->dev;
1228 old_extra = atkbd->extra;
1229 old_set = atkbd->set;
1230
1231 new_dev = input_allocate_device();
1232 if (!new_dev)
1233 return -ENOMEM;
1234
1235 atkbd->dev = new_dev;
1236 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
1237 atkbd_activate(atkbd);
1238 atkbd_set_keycode_table(atkbd);
1239 atkbd_set_device_attrs(atkbd);
1240
1241 err = input_register_device(atkbd->dev);
1242 if (err) {
1243 input_free_device(new_dev);
1244
1245 atkbd->dev = old_dev;
1246 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1247 atkbd_set_keycode_table(atkbd);
1248 atkbd_set_device_attrs(atkbd);
1249
1250 return err;
1251 }
1252 input_unregister_device(old_dev);
1253
1254 }
1255 return count;
1256 }
1257
1258 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
1259 {
1260 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
1261 }
1262
1263 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
1264 {
1265 struct input_dev *old_dev, *new_dev;
1266 unsigned long value;
1267 char *rest;
1268 int err;
1269 unsigned char old_scroll;
1270
1271 value = simple_strtoul(buf, &rest, 10);
1272 if (*rest || value > 1)
1273 return -EINVAL;
1274
1275 if (atkbd->scroll != value) {
1276 old_dev = atkbd->dev;
1277 old_scroll = atkbd->scroll;
1278
1279 new_dev = input_allocate_device();
1280 if (!new_dev)
1281 return -ENOMEM;
1282
1283 atkbd->dev = new_dev;
1284 atkbd->scroll = value;
1285 atkbd_set_keycode_table(atkbd);
1286 atkbd_set_device_attrs(atkbd);
1287
1288 err = input_register_device(atkbd->dev);
1289 if (err) {
1290 input_free_device(new_dev);
1291
1292 atkbd->scroll = old_scroll;
1293 atkbd->dev = old_dev;
1294 atkbd_set_keycode_table(atkbd);
1295 atkbd_set_device_attrs(atkbd);
1296
1297 return err;
1298 }
1299 input_unregister_device(old_dev);
1300 }
1301 return count;
1302 }
1303
1304 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
1305 {
1306 return sprintf(buf, "%d\n", atkbd->set);
1307 }
1308
1309 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
1310 {
1311 struct input_dev *old_dev, *new_dev;
1312 unsigned long value;
1313 char *rest;
1314 int err;
1315 unsigned char old_set, old_extra;
1316
1317 if (!atkbd->write)
1318 return -EIO;
1319
1320 value = simple_strtoul(buf, &rest, 10);
1321 if (*rest || (value != 2 && value != 3))
1322 return -EINVAL;
1323
1324 if (atkbd->set != value) {
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, value, atkbd->extra);
1335 atkbd_activate(atkbd);
1336 atkbd_set_keycode_table(atkbd);
1337 atkbd_set_device_attrs(atkbd);
1338
1339 err = input_register_device(atkbd->dev);
1340 if (err) {
1341 input_free_device(new_dev);
1342
1343 atkbd->dev = old_dev;
1344 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1345 atkbd_set_keycode_table(atkbd);
1346 atkbd_set_device_attrs(atkbd);
1347
1348 return err;
1349 }
1350 input_unregister_device(old_dev);
1351 }
1352 return count;
1353 }
1354
1355 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
1356 {
1357 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
1358 }
1359
1360 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
1361 {
1362 struct input_dev *old_dev, *new_dev;
1363 unsigned long value;
1364 char *rest;
1365 int err;
1366 unsigned char old_softrepeat, old_softraw;
1367
1368 if (!atkbd->write)
1369 return -EIO;
1370
1371 value = simple_strtoul(buf, &rest, 10);
1372 if (*rest || value > 1)
1373 return -EINVAL;
1374
1375 if (atkbd->softrepeat != value) {
1376 old_dev = atkbd->dev;
1377 old_softrepeat = atkbd->softrepeat;
1378 old_softraw = atkbd->softraw;
1379
1380 new_dev = input_allocate_device();
1381 if (!new_dev)
1382 return -ENOMEM;
1383
1384 atkbd->dev = new_dev;
1385 atkbd->softrepeat = value;
1386 if (atkbd->softrepeat)
1387 atkbd->softraw = 1;
1388 atkbd_set_device_attrs(atkbd);
1389
1390 err = input_register_device(atkbd->dev);
1391 if (err) {
1392 input_free_device(new_dev);
1393
1394 atkbd->dev = old_dev;
1395 atkbd->softrepeat = old_softrepeat;
1396 atkbd->softraw = old_softraw;
1397 atkbd_set_device_attrs(atkbd);
1398
1399 return err;
1400 }
1401 input_unregister_device(old_dev);
1402 }
1403 return count;
1404 }
1405
1406
1407 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
1408 {
1409 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
1410 }
1411
1412 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
1413 {
1414 struct input_dev *old_dev, *new_dev;
1415 unsigned long value;
1416 char *rest;
1417 int err;
1418 unsigned char old_softraw;
1419
1420 value = simple_strtoul(buf, &rest, 10);
1421 if (*rest || value > 1)
1422 return -EINVAL;
1423
1424 if (atkbd->softraw != value) {
1425 old_dev = atkbd->dev;
1426 old_softraw = atkbd->softraw;
1427
1428 new_dev = input_allocate_device();
1429 if (!new_dev)
1430 return -ENOMEM;
1431
1432 atkbd->dev = new_dev;
1433 atkbd->softraw = value;
1434 atkbd_set_device_attrs(atkbd);
1435
1436 err = input_register_device(atkbd->dev);
1437 if (err) {
1438 input_free_device(new_dev);
1439
1440 atkbd->dev = old_dev;
1441 atkbd->softraw = old_softraw;
1442 atkbd_set_device_attrs(atkbd);
1443
1444 return err;
1445 }
1446 input_unregister_device(old_dev);
1447 }
1448 return count;
1449 }
1450
1451 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
1452 {
1453 return sprintf(buf, "%lu\n", atkbd->err_count);
1454 }
1455
1456 static int __init atkbd_setup_fixup(const struct dmi_system_id *id)
1457 {
1458 atkbd_platform_fixup = id->driver_data;
1459 return 0;
1460 }
1461
1462 static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = {
1463 {
1464 .ident = "Dell Latitude series",
1465 .matches = {
1466 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
1467 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude"),
1468 },
1469 .callback = atkbd_setup_fixup,
1470 .driver_data = atkbd_latitude_keymap_fixup,
1471 },
1472 {
1473 .ident = "HP 2133",
1474 .matches = {
1475 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1476 DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"),
1477 },
1478 .callback = atkbd_setup_fixup,
1479 .driver_data = atkbd_hp_keymap_fixup,
1480 },
1481 { }
1482 };
1483
1484 static int __init atkbd_init(void)
1485 {
1486 dmi_check_system(atkbd_dmi_quirk_table);
1487
1488 return serio_register_driver(&atkbd_drv);
1489 }
1490
1491 static void __exit atkbd_exit(void)
1492 {
1493 serio_unregister_driver(&atkbd_drv);
1494 }
1495
1496 module_init(atkbd_init);
1497 module_exit(atkbd_exit);
Support for the Chinese Samsung S3C2440 based development boards