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Input: atkbd - cancel delayed work before freeing its structure
[linux-2.6/libata-dev.git] / drivers / input / keyboard / atkbd.c
blob379b7ff354ec7ba0036d3e1d1072b51eac61f1c3
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 cancel_delayed_work_sync(&atkbd->event_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 laptops do not generate release
838 * events so we have to do it ourselves.
839 */
840 static void atkbd_dell_laptop_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 * Inventec system with broken key release on volume keys
872 */
873 static void atkbd_inventec_keymap_fixup(struct atkbd *atkbd)
874 {
875 const unsigned int forced_release_keys[] = {
876 0xae, 0xb0,
877 };
878 int i;
879
880 if (atkbd->set == 2)
881 for (i = 0; i < ARRAY_SIZE(forced_release_keys); i++)
882 __set_bit(forced_release_keys[i],
883 atkbd->force_release_mask);
884 }
885
886 /*
887 * atkbd_set_keycode_table() initializes keyboard's keycode table
888 * according to the selected scancode set
889 */
890
891 static void atkbd_set_keycode_table(struct atkbd *atkbd)
892 {
893 unsigned int scancode;
894 int i, j;
895
896 memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
897 bitmap_zero(atkbd->force_release_mask, 512);
898
899 if (atkbd->translated) {
900 for (i = 0; i < 128; i++) {
901 scancode = atkbd_unxlate_table[i];
902 atkbd->keycode[i] = atkbd_set2_keycode[scancode];
903 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80];
904 if (atkbd->scroll)
905 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
906 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2)
907 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
908 }
909 } else if (atkbd->set == 3) {
910 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
911 } else {
912 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
913
914 if (atkbd->scroll)
915 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) {
916 scancode = atkbd_scroll_keys[i].set2;
917 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode;
918 }
919 }
920
921 /*
922 * HANGEUL and HANJA keys do not send release events so we need to
923 * generate such events ourselves
924 */
925 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL);
926 atkbd->keycode[scancode] = KEY_HANGEUL;
927 __set_bit(scancode, atkbd->force_release_mask);
928
929 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA);
930 atkbd->keycode[scancode] = KEY_HANJA;
931 __set_bit(scancode, atkbd->force_release_mask);
932
933 /*
934 * Perform additional fixups
935 */
936 if (atkbd_platform_fixup)
937 atkbd_platform_fixup(atkbd);
938 }
939
940 /*
941 * atkbd_set_device_attrs() sets up keyboard's input device structure
942 */
943
944 static void atkbd_set_device_attrs(struct atkbd *atkbd)
945 {
946 struct input_dev *input_dev = atkbd->dev;
947 int i;
948
949 if (atkbd->extra)
950 snprintf(atkbd->name, sizeof(atkbd->name),
951 "AT Set 2 Extra keyboard");
952 else
953 snprintf(atkbd->name, sizeof(atkbd->name),
954 "AT %s Set %d keyboard",
955 atkbd->translated ? "Translated" : "Raw", atkbd->set);
956
957 snprintf(atkbd->phys, sizeof(atkbd->phys),
958 "%s/input0", atkbd->ps2dev.serio->phys);
959
960 input_dev->name = atkbd->name;
961 input_dev->phys = atkbd->phys;
962 input_dev->id.bustype = BUS_I8042;
963 input_dev->id.vendor = 0x0001;
964 input_dev->id.product = atkbd->translated ? 1 : atkbd->set;
965 input_dev->id.version = atkbd->id;
966 input_dev->event = atkbd_event;
967 input_dev->dev.parent = &atkbd->ps2dev.serio->dev;
968
969 input_set_drvdata(input_dev, atkbd);
970
971 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
972 BIT_MASK(EV_MSC);
973
974 if (atkbd->write) {
975 input_dev->evbit[0] |= BIT_MASK(EV_LED);
976 input_dev->ledbit[0] = BIT_MASK(LED_NUML) |
977 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL);
978 }
979
980 if (atkbd->extra)
981 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) |
982 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) |
983 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC);
984
985 if (!atkbd->softrepeat) {
986 input_dev->rep[REP_DELAY] = 250;
987 input_dev->rep[REP_PERIOD] = 33;
988 }
989
990 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) :
991 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN);
992
993 if (atkbd->scroll) {
994 input_dev->evbit[0] |= BIT_MASK(EV_REL);
995 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) |
996 BIT_MASK(REL_HWHEEL);
997 __set_bit(BTN_MIDDLE, input_dev->keybit);
998 }
999
1000 input_dev->keycode = atkbd->keycode;
1001 input_dev->keycodesize = sizeof(unsigned short);
1002 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
1003
1004 for (i = 0; i < 512; i++)
1005 if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL)
1006 __set_bit(atkbd->keycode[i], input_dev->keybit);
1007 }
1008
1009 /*
1010 * atkbd_connect() is called when the serio module finds an interface
1011 * that isn't handled yet by an appropriate device driver. We check if
1012 * there is an AT keyboard out there and if yes, we register ourselves
1013 * to the input module.
1014 */
1015
1016 static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
1017 {
1018 struct atkbd *atkbd;
1019 struct input_dev *dev;
1020 int err = -ENOMEM;
1021
1022 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL);
1023 dev = input_allocate_device();
1024 if (!atkbd || !dev)
1025 goto fail1;
1026
1027 atkbd->dev = dev;
1028 ps2_init(&atkbd->ps2dev, serio);
1029 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work);
1030 mutex_init(&atkbd->event_mutex);
1031
1032 switch (serio->id.type) {
1033
1034 case SERIO_8042_XL:
1035 atkbd->translated = 1;
1036 case SERIO_8042:
1037 if (serio->write)
1038 atkbd->write = 1;
1039 break;
1040 }
1041
1042 atkbd->softraw = atkbd_softraw;
1043 atkbd->softrepeat = atkbd_softrepeat;
1044 atkbd->scroll = atkbd_scroll;
1045
1046 if (atkbd->softrepeat)
1047 atkbd->softraw = 1;
1048
1049 serio_set_drvdata(serio, atkbd);
1050
1051 err = serio_open(serio, drv);
1052 if (err)
1053 goto fail2;
1054
1055 if (atkbd->write) {
1056
1057 if (atkbd_probe(atkbd)) {
1058 err = -ENODEV;
1059 goto fail3;
1060 }
1061
1062 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
1063 atkbd_activate(atkbd);
1064
1065 } else {
1066 atkbd->set = 2;
1067 atkbd->id = 0xab00;
1068 }
1069
1070 atkbd_set_keycode_table(atkbd);
1071 atkbd_set_device_attrs(atkbd);
1072
1073 err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group);
1074 if (err)
1075 goto fail3;
1076
1077 atkbd_enable(atkbd);
1078
1079 err = input_register_device(atkbd->dev);
1080 if (err)
1081 goto fail4;
1082
1083 return 0;
1084
1085 fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
1086 fail3: serio_close(serio);
1087 fail2: serio_set_drvdata(serio, NULL);
1088 fail1: input_free_device(dev);
1089 kfree(atkbd);
1090 return err;
1091 }
1092
1093 /*
1094 * atkbd_reconnect() tries to restore keyboard into a sane state and is
1095 * most likely called on resume.
1096 */
1097
1098 static int atkbd_reconnect(struct serio *serio)
1099 {
1100 struct atkbd *atkbd = serio_get_drvdata(serio);
1101 struct serio_driver *drv = serio->drv;
1102
1103 if (!atkbd || !drv) {
1104 printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n");
1105 return -1;
1106 }
1107
1108 atkbd_disable(atkbd);
1109
1110 if (atkbd->write) {
1111 if (atkbd_probe(atkbd))
1112 return -1;
1113 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
1114 return -1;
1115
1116 atkbd_activate(atkbd);
1117
1118 /*
1119 * Restore repeat rate and LEDs (that were reset by atkbd_activate)
1120 * to pre-resume state
1121 */
1122 if (!atkbd->softrepeat)
1123 atkbd_set_repeat_rate(atkbd);
1124 atkbd_set_leds(atkbd);
1125 }
1126
1127 atkbd_enable(atkbd);
1128
1129 return 0;
1130 }
1131
1132 static struct serio_device_id atkbd_serio_ids[] = {
1133 {
1134 .type = SERIO_8042,
1135 .proto = SERIO_ANY,
1136 .id = SERIO_ANY,
1137 .extra = SERIO_ANY,
1138 },
1139 {
1140 .type = SERIO_8042_XL,
1141 .proto = SERIO_ANY,
1142 .id = SERIO_ANY,
1143 .extra = SERIO_ANY,
1144 },
1145 {
1146 .type = SERIO_RS232,
1147 .proto = SERIO_PS2SER,
1148 .id = SERIO_ANY,
1149 .extra = SERIO_ANY,
1150 },
1151 { 0 }
1152 };
1153
1154 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
1155
1156 static struct serio_driver atkbd_drv = {
1157 .driver = {
1158 .name = "atkbd",
1159 },
1160 .description = DRIVER_DESC,
1161 .id_table = atkbd_serio_ids,
1162 .interrupt = atkbd_interrupt,
1163 .connect = atkbd_connect,
1164 .reconnect = atkbd_reconnect,
1165 .disconnect = atkbd_disconnect,
1166 .cleanup = atkbd_cleanup,
1167 };
1168
1169 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
1170 ssize_t (*handler)(struct atkbd *, char *))
1171 {
1172 struct serio *serio = to_serio_port(dev);
1173 int retval;
1174
1175 retval = serio_pin_driver(serio);
1176 if (retval)
1177 return retval;
1178
1179 if (serio->drv != &atkbd_drv) {
1180 retval = -ENODEV;
1181 goto out;
1182 }
1183
1184 retval = handler((struct atkbd *)serio_get_drvdata(serio), buf);
1185
1186 out:
1187 serio_unpin_driver(serio);
1188 return retval;
1189 }
1190
1191 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
1192 ssize_t (*handler)(struct atkbd *, const char *, size_t))
1193 {
1194 struct serio *serio = to_serio_port(dev);
1195 struct atkbd *atkbd;
1196 int retval;
1197
1198 retval = serio_pin_driver(serio);
1199 if (retval)
1200 return retval;
1201
1202 if (serio->drv != &atkbd_drv) {
1203 retval = -ENODEV;
1204 goto out;
1205 }
1206
1207 atkbd = serio_get_drvdata(serio);
1208 atkbd_disable(atkbd);
1209 retval = handler(atkbd, buf, count);
1210 atkbd_enable(atkbd);
1211
1212 out:
1213 serio_unpin_driver(serio);
1214 return retval;
1215 }
1216
1217 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
1218 {
1219 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
1220 }
1221
1222 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
1223 {
1224 struct input_dev *old_dev, *new_dev;
1225 unsigned long value;
1226 int err;
1227 unsigned char old_extra, old_set;
1228
1229 if (!atkbd->write)
1230 return -EIO;
1231
1232 if (strict_strtoul(buf, 10, &value) || value > 1)
1233 return -EINVAL;
1234
1235 if (atkbd->extra != value) {
1236 /*
1237 * Since device's properties will change we need to
1238 * unregister old device. But allocate and register
1239 * new one first to make sure we have it.
1240 */
1241 old_dev = atkbd->dev;
1242 old_extra = atkbd->extra;
1243 old_set = atkbd->set;
1244
1245 new_dev = input_allocate_device();
1246 if (!new_dev)
1247 return -ENOMEM;
1248
1249 atkbd->dev = new_dev;
1250 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
1251 atkbd_activate(atkbd);
1252 atkbd_set_keycode_table(atkbd);
1253 atkbd_set_device_attrs(atkbd);
1254
1255 err = input_register_device(atkbd->dev);
1256 if (err) {
1257 input_free_device(new_dev);
1258
1259 atkbd->dev = old_dev;
1260 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1261 atkbd_set_keycode_table(atkbd);
1262 atkbd_set_device_attrs(atkbd);
1263
1264 return err;
1265 }
1266 input_unregister_device(old_dev);
1267
1268 }
1269 return count;
1270 }
1271
1272 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
1273 {
1274 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
1275 }
1276
1277 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
1278 {
1279 struct input_dev *old_dev, *new_dev;
1280 unsigned long value;
1281 int err;
1282 unsigned char old_scroll;
1283
1284 if (strict_strtoul(buf, 10, &value) || value > 1)
1285 return -EINVAL;
1286
1287 if (atkbd->scroll != value) {
1288 old_dev = atkbd->dev;
1289 old_scroll = atkbd->scroll;
1290
1291 new_dev = input_allocate_device();
1292 if (!new_dev)
1293 return -ENOMEM;
1294
1295 atkbd->dev = new_dev;
1296 atkbd->scroll = value;
1297 atkbd_set_keycode_table(atkbd);
1298 atkbd_set_device_attrs(atkbd);
1299
1300 err = input_register_device(atkbd->dev);
1301 if (err) {
1302 input_free_device(new_dev);
1303
1304 atkbd->scroll = old_scroll;
1305 atkbd->dev = old_dev;
1306 atkbd_set_keycode_table(atkbd);
1307 atkbd_set_device_attrs(atkbd);
1308
1309 return err;
1310 }
1311 input_unregister_device(old_dev);
1312 }
1313 return count;
1314 }
1315
1316 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
1317 {
1318 return sprintf(buf, "%d\n", atkbd->set);
1319 }
1320
1321 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
1322 {
1323 struct input_dev *old_dev, *new_dev;
1324 unsigned long value;
1325 int err;
1326 unsigned char old_set, old_extra;
1327
1328 if (!atkbd->write)
1329 return -EIO;
1330
1331 if (strict_strtoul(buf, 10, &value) || (value != 2 && value != 3))
1332 return -EINVAL;
1333
1334 if (atkbd->set != value) {
1335 old_dev = atkbd->dev;
1336 old_extra = atkbd->extra;
1337 old_set = atkbd->set;
1338
1339 new_dev = input_allocate_device();
1340 if (!new_dev)
1341 return -ENOMEM;
1342
1343 atkbd->dev = new_dev;
1344 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra);
1345 atkbd_activate(atkbd);
1346 atkbd_set_keycode_table(atkbd);
1347 atkbd_set_device_attrs(atkbd);
1348
1349 err = input_register_device(atkbd->dev);
1350 if (err) {
1351 input_free_device(new_dev);
1352
1353 atkbd->dev = old_dev;
1354 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1355 atkbd_set_keycode_table(atkbd);
1356 atkbd_set_device_attrs(atkbd);
1357
1358 return err;
1359 }
1360 input_unregister_device(old_dev);
1361 }
1362 return count;
1363 }
1364
1365 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
1366 {
1367 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
1368 }
1369
1370 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
1371 {
1372 struct input_dev *old_dev, *new_dev;
1373 unsigned long value;
1374 int err;
1375 unsigned char old_softrepeat, old_softraw;
1376
1377 if (!atkbd->write)
1378 return -EIO;
1379
1380 if (strict_strtoul(buf, 10, &value) || value > 1)
1381 return -EINVAL;
1382
1383 if (atkbd->softrepeat != value) {
1384 old_dev = atkbd->dev;
1385 old_softrepeat = atkbd->softrepeat;
1386 old_softraw = atkbd->softraw;
1387
1388 new_dev = input_allocate_device();
1389 if (!new_dev)
1390 return -ENOMEM;
1391
1392 atkbd->dev = new_dev;
1393 atkbd->softrepeat = value;
1394 if (atkbd->softrepeat)
1395 atkbd->softraw = 1;
1396 atkbd_set_device_attrs(atkbd);
1397
1398 err = input_register_device(atkbd->dev);
1399 if (err) {
1400 input_free_device(new_dev);
1401
1402 atkbd->dev = old_dev;
1403 atkbd->softrepeat = old_softrepeat;
1404 atkbd->softraw = old_softraw;
1405 atkbd_set_device_attrs(atkbd);
1406
1407 return err;
1408 }
1409 input_unregister_device(old_dev);
1410 }
1411 return count;
1412 }
1413
1414
1415 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
1416 {
1417 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
1418 }
1419
1420 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
1421 {
1422 struct input_dev *old_dev, *new_dev;
1423 unsigned long value;
1424 int err;
1425 unsigned char old_softraw;
1426
1427 if (strict_strtoul(buf, 10, &value) || value > 1)
1428 return -EINVAL;
1429
1430 if (atkbd->softraw != value) {
1431 old_dev = atkbd->dev;
1432 old_softraw = atkbd->softraw;
1433
1434 new_dev = input_allocate_device();
1435 if (!new_dev)
1436 return -ENOMEM;
1437
1438 atkbd->dev = new_dev;
1439 atkbd->softraw = value;
1440 atkbd_set_device_attrs(atkbd);
1441
1442 err = input_register_device(atkbd->dev);
1443 if (err) {
1444 input_free_device(new_dev);
1445
1446 atkbd->dev = old_dev;
1447 atkbd->softraw = old_softraw;
1448 atkbd_set_device_attrs(atkbd);
1449
1450 return err;
1451 }
1452 input_unregister_device(old_dev);
1453 }
1454 return count;
1455 }
1456
1457 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
1458 {
1459 return sprintf(buf, "%lu\n", atkbd->err_count);
1460 }
1461
1462 static int __init atkbd_setup_fixup(const struct dmi_system_id *id)
1463 {
1464 atkbd_platform_fixup = id->driver_data;
1465 return 0;
1466 }
1467
1468 static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = {
1469 {
1470 .ident = "Dell Laptop",
1471 .matches = {
1472 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
1473 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1474 },
1475 .callback = atkbd_setup_fixup,
1476 .driver_data = atkbd_dell_laptop_keymap_fixup,
1477 },
1478 {
1479 .ident = "HP 2133",
1480 .matches = {
1481 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1482 DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"),
1483 },
1484 .callback = atkbd_setup_fixup,
1485 .driver_data = atkbd_hp_keymap_fixup,
1486 },
1487 {
1488 .ident = "Inventec Symphony",
1489 .matches = {
1490 DMI_MATCH(DMI_SYS_VENDOR, "INVENTEC"),
1491 DMI_MATCH(DMI_PRODUCT_NAME, "SYMPHONY 6.0/7.0"),
1492 },
1493 .callback = atkbd_setup_fixup,
1494 .driver_data = atkbd_inventec_keymap_fixup,
1495 },
1496 { }
1497 };
1498
1499 static int __init atkbd_init(void)
1500 {
1501 dmi_check_system(atkbd_dmi_quirk_table);
1502
1503 return serio_register_driver(&atkbd_drv);
1504 }
1505
1506 static void __exit atkbd_exit(void)
1507 {
1508 serio_unregister_driver(&atkbd_drv);
1509 }
1510
1511 module_init(atkbd_init);
1512 module_exit(atkbd_exit);
Linux 2.6 libata-dev (mirror)