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[deliverable/linux.git] / drivers / input / keyboard / atkbd.c
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 a 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 * Perform fixup for HP Pavilion ZV6100 laptop that doesn't generate release
888 * for its volume buttons
889 */
890 static void atkbd_hp_zv6100_keymap_fixup(struct atkbd *atkbd)
891 {
892 const unsigned int forced_release_keys[] = {
893 0xae, 0xb0,
894 };
895 int i;
896
897 if (atkbd->set == 2)
898 for (i = 0; i < ARRAY_SIZE(forced_release_keys); i++)
899 __set_bit(forced_release_keys[i],
900 atkbd->force_release_mask);
901 }
902
903 /*
904 * Samsung NC10 with Fn+F? key release not working
905 */
906 static void atkbd_samsung_keymap_fixup(struct atkbd *atkbd)
907 {
908 const unsigned int forced_release_keys[] = {
909 0x82, 0x83, 0x84, 0x86, 0x88, 0x89, 0xb3, 0xf7, 0xf9,
910 };
911 int i;
912
913 if (atkbd->set == 2)
914 for (i = 0; i < ARRAY_SIZE(forced_release_keys); i++)
915 __set_bit(forced_release_keys[i],
916 atkbd->force_release_mask);
917 }
918
919 /*
920 * atkbd_set_keycode_table() initializes keyboard's keycode table
921 * according to the selected scancode set
922 */
923
924 static void atkbd_set_keycode_table(struct atkbd *atkbd)
925 {
926 unsigned int scancode;
927 int i, j;
928
929 memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
930 bitmap_zero(atkbd->force_release_mask, 512);
931
932 if (atkbd->translated) {
933 for (i = 0; i < 128; i++) {
934 scancode = atkbd_unxlate_table[i];
935 atkbd->keycode[i] = atkbd_set2_keycode[scancode];
936 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80];
937 if (atkbd->scroll)
938 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
939 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2)
940 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
941 }
942 } else if (atkbd->set == 3) {
943 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
944 } else {
945 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
946
947 if (atkbd->scroll)
948 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) {
949 scancode = atkbd_scroll_keys[i].set2;
950 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode;
951 }
952 }
953
954 /*
955 * HANGEUL and HANJA keys do not send release events so we need to
956 * generate such events ourselves
957 */
958 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL);
959 atkbd->keycode[scancode] = KEY_HANGEUL;
960 __set_bit(scancode, atkbd->force_release_mask);
961
962 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA);
963 atkbd->keycode[scancode] = KEY_HANJA;
964 __set_bit(scancode, atkbd->force_release_mask);
965
966 /*
967 * Perform additional fixups
968 */
969 if (atkbd_platform_fixup)
970 atkbd_platform_fixup(atkbd);
971 }
972
973 /*
974 * atkbd_set_device_attrs() sets up keyboard's input device structure
975 */
976
977 static void atkbd_set_device_attrs(struct atkbd *atkbd)
978 {
979 struct input_dev *input_dev = atkbd->dev;
980 int i;
981
982 if (atkbd->extra)
983 snprintf(atkbd->name, sizeof(atkbd->name),
984 "AT Set 2 Extra keyboard");
985 else
986 snprintf(atkbd->name, sizeof(atkbd->name),
987 "AT %s Set %d keyboard",
988 atkbd->translated ? "Translated" : "Raw", atkbd->set);
989
990 snprintf(atkbd->phys, sizeof(atkbd->phys),
991 "%s/input0", atkbd->ps2dev.serio->phys);
992
993 input_dev->name = atkbd->name;
994 input_dev->phys = atkbd->phys;
995 input_dev->id.bustype = BUS_I8042;
996 input_dev->id.vendor = 0x0001;
997 input_dev->id.product = atkbd->translated ? 1 : atkbd->set;
998 input_dev->id.version = atkbd->id;
999 input_dev->event = atkbd_event;
1000 input_dev->dev.parent = &atkbd->ps2dev.serio->dev;
1001
1002 input_set_drvdata(input_dev, atkbd);
1003
1004 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
1005 BIT_MASK(EV_MSC);
1006
1007 if (atkbd->write) {
1008 input_dev->evbit[0] |= BIT_MASK(EV_LED);
1009 input_dev->ledbit[0] = BIT_MASK(LED_NUML) |
1010 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL);
1011 }
1012
1013 if (atkbd->extra)
1014 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) |
1015 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) |
1016 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC);
1017
1018 if (!atkbd->softrepeat) {
1019 input_dev->rep[REP_DELAY] = 250;
1020 input_dev->rep[REP_PERIOD] = 33;
1021 }
1022
1023 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) :
1024 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN);
1025
1026 if (atkbd->scroll) {
1027 input_dev->evbit[0] |= BIT_MASK(EV_REL);
1028 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) |
1029 BIT_MASK(REL_HWHEEL);
1030 __set_bit(BTN_MIDDLE, input_dev->keybit);
1031 }
1032
1033 input_dev->keycode = atkbd->keycode;
1034 input_dev->keycodesize = sizeof(unsigned short);
1035 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
1036
1037 for (i = 0; i < 512; i++)
1038 if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL)
1039 __set_bit(atkbd->keycode[i], input_dev->keybit);
1040 }
1041
1042 /*
1043 * atkbd_connect() is called when the serio module finds an interface
1044 * that isn't handled yet by an appropriate device driver. We check if
1045 * there is an AT keyboard out there and if yes, we register ourselves
1046 * to the input module.
1047 */
1048
1049 static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
1050 {
1051 struct atkbd *atkbd;
1052 struct input_dev *dev;
1053 int err = -ENOMEM;
1054
1055 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL);
1056 dev = input_allocate_device();
1057 if (!atkbd || !dev)
1058 goto fail1;
1059
1060 atkbd->dev = dev;
1061 ps2_init(&atkbd->ps2dev, serio);
1062 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work);
1063 mutex_init(&atkbd->event_mutex);
1064
1065 switch (serio->id.type) {
1066
1067 case SERIO_8042_XL:
1068 atkbd->translated = 1;
1069 case SERIO_8042:
1070 if (serio->write)
1071 atkbd->write = 1;
1072 break;
1073 }
1074
1075 atkbd->softraw = atkbd_softraw;
1076 atkbd->softrepeat = atkbd_softrepeat;
1077 atkbd->scroll = atkbd_scroll;
1078
1079 if (atkbd->softrepeat)
1080 atkbd->softraw = 1;
1081
1082 serio_set_drvdata(serio, atkbd);
1083
1084 err = serio_open(serio, drv);
1085 if (err)
1086 goto fail2;
1087
1088 if (atkbd->write) {
1089
1090 if (atkbd_probe(atkbd)) {
1091 err = -ENODEV;
1092 goto fail3;
1093 }
1094
1095 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
1096 atkbd_activate(atkbd);
1097
1098 } else {
1099 atkbd->set = 2;
1100 atkbd->id = 0xab00;
1101 }
1102
1103 atkbd_set_keycode_table(atkbd);
1104 atkbd_set_device_attrs(atkbd);
1105
1106 err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group);
1107 if (err)
1108 goto fail3;
1109
1110 atkbd_enable(atkbd);
1111
1112 err = input_register_device(atkbd->dev);
1113 if (err)
1114 goto fail4;
1115
1116 return 0;
1117
1118 fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
1119 fail3: serio_close(serio);
1120 fail2: serio_set_drvdata(serio, NULL);
1121 fail1: input_free_device(dev);
1122 kfree(atkbd);
1123 return err;
1124 }
1125
1126 /*
1127 * atkbd_reconnect() tries to restore keyboard into a sane state and is
1128 * most likely called on resume.
1129 */
1130
1131 static int atkbd_reconnect(struct serio *serio)
1132 {
1133 struct atkbd *atkbd = serio_get_drvdata(serio);
1134 struct serio_driver *drv = serio->drv;
1135
1136 if (!atkbd || !drv) {
1137 printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n");
1138 return -1;
1139 }
1140
1141 atkbd_disable(atkbd);
1142
1143 if (atkbd->write) {
1144 if (atkbd_probe(atkbd))
1145 return -1;
1146 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
1147 return -1;
1148
1149 atkbd_activate(atkbd);
1150
1151 /*
1152 * Restore repeat rate and LEDs (that were reset by atkbd_activate)
1153 * to pre-resume state
1154 */
1155 if (!atkbd->softrepeat)
1156 atkbd_set_repeat_rate(atkbd);
1157 atkbd_set_leds(atkbd);
1158 }
1159
1160 atkbd_enable(atkbd);
1161
1162 return 0;
1163 }
1164
1165 static struct serio_device_id atkbd_serio_ids[] = {
1166 {
1167 .type = SERIO_8042,
1168 .proto = SERIO_ANY,
1169 .id = SERIO_ANY,
1170 .extra = SERIO_ANY,
1171 },
1172 {
1173 .type = SERIO_8042_XL,
1174 .proto = SERIO_ANY,
1175 .id = SERIO_ANY,
1176 .extra = SERIO_ANY,
1177 },
1178 {
1179 .type = SERIO_RS232,
1180 .proto = SERIO_PS2SER,
1181 .id = SERIO_ANY,
1182 .extra = SERIO_ANY,
1183 },
1184 { 0 }
1185 };
1186
1187 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
1188
1189 static struct serio_driver atkbd_drv = {
1190 .driver = {
1191 .name = "atkbd",
1192 },
1193 .description = DRIVER_DESC,
1194 .id_table = atkbd_serio_ids,
1195 .interrupt = atkbd_interrupt,
1196 .connect = atkbd_connect,
1197 .reconnect = atkbd_reconnect,
1198 .disconnect = atkbd_disconnect,
1199 .cleanup = atkbd_cleanup,
1200 };
1201
1202 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
1203 ssize_t (*handler)(struct atkbd *, char *))
1204 {
1205 struct serio *serio = to_serio_port(dev);
1206 int retval;
1207
1208 retval = serio_pin_driver(serio);
1209 if (retval)
1210 return retval;
1211
1212 if (serio->drv != &atkbd_drv) {
1213 retval = -ENODEV;
1214 goto out;
1215 }
1216
1217 retval = handler((struct atkbd *)serio_get_drvdata(serio), buf);
1218
1219 out:
1220 serio_unpin_driver(serio);
1221 return retval;
1222 }
1223
1224 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
1225 ssize_t (*handler)(struct atkbd *, const char *, size_t))
1226 {
1227 struct serio *serio = to_serio_port(dev);
1228 struct atkbd *atkbd;
1229 int retval;
1230
1231 retval = serio_pin_driver(serio);
1232 if (retval)
1233 return retval;
1234
1235 if (serio->drv != &atkbd_drv) {
1236 retval = -ENODEV;
1237 goto out;
1238 }
1239
1240 atkbd = serio_get_drvdata(serio);
1241 atkbd_disable(atkbd);
1242 retval = handler(atkbd, buf, count);
1243 atkbd_enable(atkbd);
1244
1245 out:
1246 serio_unpin_driver(serio);
1247 return retval;
1248 }
1249
1250 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
1251 {
1252 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
1253 }
1254
1255 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
1256 {
1257 struct input_dev *old_dev, *new_dev;
1258 unsigned long value;
1259 int err;
1260 unsigned char old_extra, old_set;
1261
1262 if (!atkbd->write)
1263 return -EIO;
1264
1265 if (strict_strtoul(buf, 10, &value) || value > 1)
1266 return -EINVAL;
1267
1268 if (atkbd->extra != value) {
1269 /*
1270 * Since device's properties will change we need to
1271 * unregister old device. But allocate and register
1272 * new one first to make sure we have it.
1273 */
1274 old_dev = atkbd->dev;
1275 old_extra = atkbd->extra;
1276 old_set = atkbd->set;
1277
1278 new_dev = input_allocate_device();
1279 if (!new_dev)
1280 return -ENOMEM;
1281
1282 atkbd->dev = new_dev;
1283 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
1284 atkbd_activate(atkbd);
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->dev = old_dev;
1293 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
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 }
1302 return count;
1303 }
1304
1305 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
1306 {
1307 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
1308 }
1309
1310 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
1311 {
1312 struct input_dev *old_dev, *new_dev;
1313 unsigned long value;
1314 int err;
1315 unsigned char old_scroll;
1316
1317 if (strict_strtoul(buf, 10, &value) || value > 1)
1318 return -EINVAL;
1319
1320 if (atkbd->scroll != value) {
1321 old_dev = atkbd->dev;
1322 old_scroll = atkbd->scroll;
1323
1324 new_dev = input_allocate_device();
1325 if (!new_dev)
1326 return -ENOMEM;
1327
1328 atkbd->dev = new_dev;
1329 atkbd->scroll = value;
1330 atkbd_set_keycode_table(atkbd);
1331 atkbd_set_device_attrs(atkbd);
1332
1333 err = input_register_device(atkbd->dev);
1334 if (err) {
1335 input_free_device(new_dev);
1336
1337 atkbd->scroll = old_scroll;
1338 atkbd->dev = old_dev;
1339 atkbd_set_keycode_table(atkbd);
1340 atkbd_set_device_attrs(atkbd);
1341
1342 return err;
1343 }
1344 input_unregister_device(old_dev);
1345 }
1346 return count;
1347 }
1348
1349 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
1350 {
1351 return sprintf(buf, "%d\n", atkbd->set);
1352 }
1353
1354 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
1355 {
1356 struct input_dev *old_dev, *new_dev;
1357 unsigned long value;
1358 int err;
1359 unsigned char old_set, old_extra;
1360
1361 if (!atkbd->write)
1362 return -EIO;
1363
1364 if (strict_strtoul(buf, 10, &value) || (value != 2 && value != 3))
1365 return -EINVAL;
1366
1367 if (atkbd->set != value) {
1368 old_dev = atkbd->dev;
1369 old_extra = atkbd->extra;
1370 old_set = atkbd->set;
1371
1372 new_dev = input_allocate_device();
1373 if (!new_dev)
1374 return -ENOMEM;
1375
1376 atkbd->dev = new_dev;
1377 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra);
1378 atkbd_activate(atkbd);
1379 atkbd_set_keycode_table(atkbd);
1380 atkbd_set_device_attrs(atkbd);
1381
1382 err = input_register_device(atkbd->dev);
1383 if (err) {
1384 input_free_device(new_dev);
1385
1386 atkbd->dev = old_dev;
1387 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1388 atkbd_set_keycode_table(atkbd);
1389 atkbd_set_device_attrs(atkbd);
1390
1391 return err;
1392 }
1393 input_unregister_device(old_dev);
1394 }
1395 return count;
1396 }
1397
1398 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
1399 {
1400 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
1401 }
1402
1403 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
1404 {
1405 struct input_dev *old_dev, *new_dev;
1406 unsigned long value;
1407 int err;
1408 unsigned char old_softrepeat, old_softraw;
1409
1410 if (!atkbd->write)
1411 return -EIO;
1412
1413 if (strict_strtoul(buf, 10, &value) || value > 1)
1414 return -EINVAL;
1415
1416 if (atkbd->softrepeat != value) {
1417 old_dev = atkbd->dev;
1418 old_softrepeat = atkbd->softrepeat;
1419 old_softraw = atkbd->softraw;
1420
1421 new_dev = input_allocate_device();
1422 if (!new_dev)
1423 return -ENOMEM;
1424
1425 atkbd->dev = new_dev;
1426 atkbd->softrepeat = value;
1427 if (atkbd->softrepeat)
1428 atkbd->softraw = 1;
1429 atkbd_set_device_attrs(atkbd);
1430
1431 err = input_register_device(atkbd->dev);
1432 if (err) {
1433 input_free_device(new_dev);
1434
1435 atkbd->dev = old_dev;
1436 atkbd->softrepeat = old_softrepeat;
1437 atkbd->softraw = old_softraw;
1438 atkbd_set_device_attrs(atkbd);
1439
1440 return err;
1441 }
1442 input_unregister_device(old_dev);
1443 }
1444 return count;
1445 }
1446
1447
1448 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
1449 {
1450 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
1451 }
1452
1453 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
1454 {
1455 struct input_dev *old_dev, *new_dev;
1456 unsigned long value;
1457 int err;
1458 unsigned char old_softraw;
1459
1460 if (strict_strtoul(buf, 10, &value) || value > 1)
1461 return -EINVAL;
1462
1463 if (atkbd->softraw != value) {
1464 old_dev = atkbd->dev;
1465 old_softraw = atkbd->softraw;
1466
1467 new_dev = input_allocate_device();
1468 if (!new_dev)
1469 return -ENOMEM;
1470
1471 atkbd->dev = new_dev;
1472 atkbd->softraw = value;
1473 atkbd_set_device_attrs(atkbd);
1474
1475 err = input_register_device(atkbd->dev);
1476 if (err) {
1477 input_free_device(new_dev);
1478
1479 atkbd->dev = old_dev;
1480 atkbd->softraw = old_softraw;
1481 atkbd_set_device_attrs(atkbd);
1482
1483 return err;
1484 }
1485 input_unregister_device(old_dev);
1486 }
1487 return count;
1488 }
1489
1490 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
1491 {
1492 return sprintf(buf, "%lu\n", atkbd->err_count);
1493 }
1494
1495 static int __init atkbd_setup_fixup(const struct dmi_system_id *id)
1496 {
1497 atkbd_platform_fixup = id->driver_data;
1498 return 0;
1499 }
1500
1501 static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = {
1502 {
1503 .ident = "Dell Laptop",
1504 .matches = {
1505 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
1506 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1507 },
1508 .callback = atkbd_setup_fixup,
1509 .driver_data = atkbd_dell_laptop_keymap_fixup,
1510 },
1511 {
1512 .ident = "Dell Laptop",
1513 .matches = {
1514 DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
1515 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1516 },
1517 .callback = atkbd_setup_fixup,
1518 .driver_data = atkbd_dell_laptop_keymap_fixup,
1519 },
1520 {
1521 .ident = "HP 2133",
1522 .matches = {
1523 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1524 DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"),
1525 },
1526 .callback = atkbd_setup_fixup,
1527 .driver_data = atkbd_hp_keymap_fixup,
1528 },
1529 {
1530 .ident = "HP Pavilion ZV6100",
1531 .matches = {
1532 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1533 DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion ZV6100"),
1534 },
1535 .callback = atkbd_setup_fixup,
1536 .driver_data = atkbd_hp_zv6100_keymap_fixup,
1537 },
1538 {
1539 .ident = "Inventec Symphony",
1540 .matches = {
1541 DMI_MATCH(DMI_SYS_VENDOR, "INVENTEC"),
1542 DMI_MATCH(DMI_PRODUCT_NAME, "SYMPHONY 6.0/7.0"),
1543 },
1544 .callback = atkbd_setup_fixup,
1545 .driver_data = atkbd_inventec_keymap_fixup,
1546 },
1547 {
1548 .ident = "Samsung NC10",
1549 .matches = {
1550 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1551 DMI_MATCH(DMI_PRODUCT_NAME, "NC10"),
1552 },
1553 .callback = atkbd_setup_fixup,
1554 .driver_data = atkbd_samsung_keymap_fixup,
1555 },
1556 { }
1557 };
1558
1559 static int __init atkbd_init(void)
1560 {
1561 dmi_check_system(atkbd_dmi_quirk_table);
1562
1563 return serio_register_driver(&atkbd_drv);
1564 }
1565
1566 static void __exit atkbd_exit(void)
1567 {
1568 serio_unregister_driver(&atkbd_drv);
1569 }
1570
1571 module_init(atkbd_init);
1572 module_exit(atkbd_exit);
Linux kernel - Deliverables
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