Input: serio - fix potential deadlock when unbinding drivers
[linux-2.6/linux-acpi-2.6/ibm-acpi-2.6.git] / drivers / input / keyboard / atkbd.c
blob1cf32a7814d05604c79000541dfa477acc597da4
1 /*
2 * AT and PS/2 keyboard driver
4 * Copyright (c) 1999-2002 Vojtech Pavlik
5 */
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.
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.
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>
32 #define DRIVER_DESC "AT and PS/2 keyboard driver"
34 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
35 MODULE_DESCRIPTION(DRIVER_DESC);
36 MODULE_LICENSE("GPL");
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)");
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");
50 static int atkbd_softrepeat;
51 module_param_named(softrepeat, atkbd_softrepeat, bool, 0);
52 MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat");
54 static int atkbd_softraw = 1;
55 module_param_named(softraw, atkbd_softraw, bool, 0);
56 MODULE_PARM_DESC(softraw, "Use software generated rawmode");
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");
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");
67 * Scancode to keycode tables. These are just the default setting, and
68 * are loadable via a userland utility.
71 #define ATKBD_KEYMAP_SIZE 512
73 static const unsigned short atkbd_set2_keycode[ATKBD_KEYMAP_SIZE] = {
75 #ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES
77 /* XXX: need a more general approach */
79 #include "hpps2atkbd.h" /* include the keyboard scancodes */
81 #else
82 0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117,
83 0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0,
84 0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183,
85 0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185,
86 0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0,
87 0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85,
88 0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0,
89 82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99,
91 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
92 217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125,
93 173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127,
94 159, 0,115, 0,164, 0, 0,116,158, 0,172,166, 0, 0, 0,142,
95 157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0,
96 226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0,
97 0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112,
98 110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0,
100 0, 0, 0, 65, 99,
101 #endif
104 static const unsigned short atkbd_set3_keycode[ATKBD_KEYMAP_SIZE] = {
106 0, 0, 0, 0, 0, 0, 0, 59, 1,138,128,129,130, 15, 41, 60,
107 131, 29, 42, 86, 58, 16, 2, 61,133, 56, 44, 31, 30, 17, 3, 62,
108 134, 46, 45, 32, 18, 5, 4, 63,135, 57, 47, 33, 20, 19, 6, 64,
109 136, 49, 48, 35, 34, 21, 7, 65,137,100, 50, 36, 22, 8, 9, 66,
110 125, 51, 37, 23, 24, 11, 10, 67,126, 52, 53, 38, 39, 25, 12, 68,
111 113,114, 40, 43, 26, 13, 87, 99, 97, 54, 28, 27, 43, 43, 88, 70,
112 108,105,119,103,111,107, 14,110, 0, 79,106, 75, 71,109,102,104,
113 82, 83, 80, 76, 77, 72, 69, 98, 0, 96, 81, 0, 78, 73, 55,183,
115 184,185,186,187, 74, 94, 92, 93, 0, 0, 0,125,126,127,112, 0,
116 0,139,172,163,165,115,152,172,166,140,160,154,113,114,167,168,
117 148,149,147,140
120 static const unsigned short atkbd_unxlate_table[128] = {
121 0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13,
122 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27,
123 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42,
124 50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3,
125 11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105,
126 114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63,
127 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111,
128 19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110
131 #define ATKBD_CMD_SETLEDS 0x10ed
132 #define ATKBD_CMD_GSCANSET 0x11f0
133 #define ATKBD_CMD_SSCANSET 0x10f0
134 #define ATKBD_CMD_GETID 0x02f2
135 #define ATKBD_CMD_SETREP 0x10f3
136 #define ATKBD_CMD_ENABLE 0x00f4
137 #define ATKBD_CMD_RESET_DIS 0x00f5 /* Reset to defaults and disable */
138 #define ATKBD_CMD_RESET_DEF 0x00f6 /* Reset to defaults */
139 #define ATKBD_CMD_SETALL_MBR 0x00fa
140 #define ATKBD_CMD_RESET_BAT 0x02ff
141 #define ATKBD_CMD_RESEND 0x00fe
142 #define ATKBD_CMD_EX_ENABLE 0x10ea
143 #define ATKBD_CMD_EX_SETLEDS 0x20eb
144 #define ATKBD_CMD_OK_GETID 0x02e8
146 #define ATKBD_RET_ACK 0xfa
147 #define ATKBD_RET_NAK 0xfe
148 #define ATKBD_RET_BAT 0xaa
149 #define ATKBD_RET_EMUL0 0xe0
150 #define ATKBD_RET_EMUL1 0xe1
151 #define ATKBD_RET_RELEASE 0xf0
152 #define ATKBD_RET_HANJA 0xf1
153 #define ATKBD_RET_HANGEUL 0xf2
154 #define ATKBD_RET_ERR 0xff
156 #define ATKBD_KEY_UNKNOWN 0
157 #define ATKBD_KEY_NULL 255
159 #define ATKBD_SCR_1 254
160 #define ATKBD_SCR_2 253
161 #define ATKBD_SCR_4 252
162 #define ATKBD_SCR_8 251
163 #define ATKBD_SCR_CLICK 250
164 #define ATKBD_SCR_LEFT 249
165 #define ATKBD_SCR_RIGHT 248
167 #define ATKBD_SPECIAL ATKBD_SCR_RIGHT
169 #define ATKBD_LED_EVENT_BIT 0
170 #define ATKBD_REP_EVENT_BIT 1
172 #define ATKBD_XL_ERR 0x01
173 #define ATKBD_XL_BAT 0x02
174 #define ATKBD_XL_ACK 0x04
175 #define ATKBD_XL_NAK 0x08
176 #define ATKBD_XL_HANGEUL 0x10
177 #define ATKBD_XL_HANJA 0x20
179 static const struct {
180 unsigned char keycode;
181 unsigned char set2;
182 } atkbd_scroll_keys[] = {
183 { ATKBD_SCR_1, 0xc5 },
184 { ATKBD_SCR_2, 0x9d },
185 { ATKBD_SCR_4, 0xa4 },
186 { ATKBD_SCR_8, 0x9b },
187 { ATKBD_SCR_CLICK, 0xe0 },
188 { ATKBD_SCR_LEFT, 0xcb },
189 { ATKBD_SCR_RIGHT, 0xd2 },
193 * The atkbd control structure
196 struct atkbd {
198 struct ps2dev ps2dev;
199 struct input_dev *dev;
201 /* Written only during init */
202 char name[64];
203 char phys[32];
205 unsigned short id;
206 unsigned short keycode[ATKBD_KEYMAP_SIZE];
207 DECLARE_BITMAP(force_release_mask, ATKBD_KEYMAP_SIZE);
208 unsigned char set;
209 unsigned char translated;
210 unsigned char extra;
211 unsigned char write;
212 unsigned char softrepeat;
213 unsigned char softraw;
214 unsigned char scroll;
215 unsigned char enabled;
217 /* Accessed only from interrupt */
218 unsigned char emul;
219 unsigned char resend;
220 unsigned char release;
221 unsigned long xl_bit;
222 unsigned int last;
223 unsigned long time;
224 unsigned long err_count;
226 struct delayed_work event_work;
227 unsigned long event_jiffies;
228 unsigned long event_mask;
230 /* Serializes reconnect(), attr->set() and event work */
231 struct mutex mutex;
235 * System-specific keymap fixup routine
237 static void (*atkbd_platform_fixup)(struct atkbd *, const void *data);
238 static void *atkbd_platform_fixup_data;
239 static unsigned int (*atkbd_platform_scancode_fixup)(struct atkbd *, unsigned int);
241 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
242 ssize_t (*handler)(struct atkbd *, char *));
243 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
244 ssize_t (*handler)(struct atkbd *, const char *, size_t));
245 #define ATKBD_DEFINE_ATTR(_name) \
246 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
247 static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \
248 static ssize_t atkbd_do_show_##_name(struct device *d, \
249 struct device_attribute *attr, char *b) \
251 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
253 static ssize_t atkbd_do_set_##_name(struct device *d, \
254 struct device_attribute *attr, const char *b, size_t s) \
256 return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name); \
258 static struct device_attribute atkbd_attr_##_name = \
259 __ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name);
261 ATKBD_DEFINE_ATTR(extra);
262 ATKBD_DEFINE_ATTR(force_release);
263 ATKBD_DEFINE_ATTR(scroll);
264 ATKBD_DEFINE_ATTR(set);
265 ATKBD_DEFINE_ATTR(softrepeat);
266 ATKBD_DEFINE_ATTR(softraw);
268 #define ATKBD_DEFINE_RO_ATTR(_name) \
269 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
270 static ssize_t atkbd_do_show_##_name(struct device *d, \
271 struct device_attribute *attr, char *b) \
273 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
275 static struct device_attribute atkbd_attr_##_name = \
276 __ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL);
278 ATKBD_DEFINE_RO_ATTR(err_count);
280 static struct attribute *atkbd_attributes[] = {
281 &atkbd_attr_extra.attr,
282 &atkbd_attr_force_release.attr,
283 &atkbd_attr_scroll.attr,
284 &atkbd_attr_set.attr,
285 &atkbd_attr_softrepeat.attr,
286 &atkbd_attr_softraw.attr,
287 &atkbd_attr_err_count.attr,
288 NULL
291 static struct attribute_group atkbd_attribute_group = {
292 .attrs = atkbd_attributes,
295 static const unsigned int xl_table[] = {
296 ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK,
297 ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL,
301 * Checks if we should mangle the scancode to extract 'release' bit
302 * in translated mode.
304 static int atkbd_need_xlate(unsigned long xl_bit, unsigned char code)
306 int i;
308 if (code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1)
309 return 0;
311 for (i = 0; i < ARRAY_SIZE(xl_table); i++)
312 if (code == xl_table[i])
313 return test_bit(i, &xl_bit);
315 return 1;
319 * Calculates new value of xl_bit so the driver can distinguish
320 * between make/break pair of scancodes for select keys and PS/2
321 * protocol responses.
323 static void atkbd_calculate_xl_bit(struct atkbd *atkbd, unsigned char code)
325 int i;
327 for (i = 0; i < ARRAY_SIZE(xl_table); i++) {
328 if (!((code ^ xl_table[i]) & 0x7f)) {
329 if (code & 0x80)
330 __clear_bit(i, &atkbd->xl_bit);
331 else
332 __set_bit(i, &atkbd->xl_bit);
333 break;
339 * Encode the scancode, 0xe0 prefix, and high bit into a single integer,
340 * keeping kernel 2.4 compatibility for set 2
342 static unsigned int atkbd_compat_scancode(struct atkbd *atkbd, unsigned int code)
344 if (atkbd->set == 3) {
345 if (atkbd->emul == 1)
346 code |= 0x100;
347 } else {
348 code = (code & 0x7f) | ((code & 0x80) << 1);
349 if (atkbd->emul == 1)
350 code |= 0x80;
353 return code;
357 * atkbd_interrupt(). Here takes place processing of data received from
358 * the keyboard into events.
361 static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data,
362 unsigned int flags)
364 struct atkbd *atkbd = serio_get_drvdata(serio);
365 struct input_dev *dev = atkbd->dev;
366 unsigned int code = data;
367 int scroll = 0, hscroll = 0, click = -1;
368 int value;
369 unsigned short keycode;
371 #ifdef ATKBD_DEBUG
372 printk(KERN_DEBUG "atkbd.c: Received %02x flags %02x\n", data, flags);
373 #endif
375 #if !defined(__i386__) && !defined (__x86_64__)
376 if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) {
377 printk(KERN_WARNING "atkbd.c: frame/parity error: %02x\n", flags);
378 serio_write(serio, ATKBD_CMD_RESEND);
379 atkbd->resend = 1;
380 goto out;
383 if (!flags && data == ATKBD_RET_ACK)
384 atkbd->resend = 0;
385 #endif
387 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_ACK))
388 if (ps2_handle_ack(&atkbd->ps2dev, data))
389 goto out;
391 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_CMD))
392 if (ps2_handle_response(&atkbd->ps2dev, data))
393 goto out;
395 if (!atkbd->enabled)
396 goto out;
398 input_event(dev, EV_MSC, MSC_RAW, code);
400 if (atkbd_platform_scancode_fixup)
401 code = atkbd_platform_scancode_fixup(atkbd, code);
403 if (atkbd->translated) {
405 if (atkbd->emul || atkbd_need_xlate(atkbd->xl_bit, code)) {
406 atkbd->release = code >> 7;
407 code &= 0x7f;
410 if (!atkbd->emul)
411 atkbd_calculate_xl_bit(atkbd, data);
414 switch (code) {
415 case ATKBD_RET_BAT:
416 atkbd->enabled = 0;
417 serio_reconnect(atkbd->ps2dev.serio);
418 goto out;
419 case ATKBD_RET_EMUL0:
420 atkbd->emul = 1;
421 goto out;
422 case ATKBD_RET_EMUL1:
423 atkbd->emul = 2;
424 goto out;
425 case ATKBD_RET_RELEASE:
426 atkbd->release = 1;
427 goto out;
428 case ATKBD_RET_ACK:
429 case ATKBD_RET_NAK:
430 if (printk_ratelimit())
431 printk(KERN_WARNING "atkbd.c: Spurious %s on %s. "
432 "Some program might be trying access hardware directly.\n",
433 data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys);
434 goto out;
435 case ATKBD_RET_ERR:
436 atkbd->err_count++;
437 #ifdef ATKBD_DEBUG
438 printk(KERN_DEBUG "atkbd.c: Keyboard on %s reports too many keys pressed.\n", serio->phys);
439 #endif
440 goto out;
443 code = atkbd_compat_scancode(atkbd, code);
445 if (atkbd->emul && --atkbd->emul)
446 goto out;
448 keycode = atkbd->keycode[code];
450 if (keycode != ATKBD_KEY_NULL)
451 input_event(dev, EV_MSC, MSC_SCAN, code);
453 switch (keycode) {
454 case ATKBD_KEY_NULL:
455 break;
456 case ATKBD_KEY_UNKNOWN:
457 printk(KERN_WARNING
458 "atkbd.c: Unknown key %s (%s set %d, code %#x on %s).\n",
459 atkbd->release ? "released" : "pressed",
460 atkbd->translated ? "translated" : "raw",
461 atkbd->set, code, serio->phys);
462 printk(KERN_WARNING
463 "atkbd.c: Use 'setkeycodes %s%02x <keycode>' to make it known.\n",
464 code & 0x80 ? "e0" : "", code & 0x7f);
465 input_sync(dev);
466 break;
467 case ATKBD_SCR_1:
468 scroll = 1 - atkbd->release * 2;
469 break;
470 case ATKBD_SCR_2:
471 scroll = 2 - atkbd->release * 4;
472 break;
473 case ATKBD_SCR_4:
474 scroll = 4 - atkbd->release * 8;
475 break;
476 case ATKBD_SCR_8:
477 scroll = 8 - atkbd->release * 16;
478 break;
479 case ATKBD_SCR_CLICK:
480 click = !atkbd->release;
481 break;
482 case ATKBD_SCR_LEFT:
483 hscroll = -1;
484 break;
485 case ATKBD_SCR_RIGHT:
486 hscroll = 1;
487 break;
488 default:
489 if (atkbd->release) {
490 value = 0;
491 atkbd->last = 0;
492 } else if (!atkbd->softrepeat && test_bit(keycode, dev->key)) {
493 /* Workaround Toshiba laptop multiple keypress */
494 value = time_before(jiffies, atkbd->time) && atkbd->last == code ? 1 : 2;
495 } else {
496 value = 1;
497 atkbd->last = code;
498 atkbd->time = jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]) / 2;
501 input_event(dev, EV_KEY, keycode, value);
502 input_sync(dev);
504 if (value && test_bit(code, atkbd->force_release_mask)) {
505 input_report_key(dev, keycode, 0);
506 input_sync(dev);
510 if (atkbd->scroll) {
511 if (click != -1)
512 input_report_key(dev, BTN_MIDDLE, click);
513 input_report_rel(dev, REL_WHEEL, scroll);
514 input_report_rel(dev, REL_HWHEEL, hscroll);
515 input_sync(dev);
518 atkbd->release = 0;
519 out:
520 return IRQ_HANDLED;
523 static int atkbd_set_repeat_rate(struct atkbd *atkbd)
525 const short period[32] =
526 { 33, 37, 42, 46, 50, 54, 58, 63, 67, 75, 83, 92, 100, 109, 116, 125,
527 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 };
528 const short delay[4] =
529 { 250, 500, 750, 1000 };
531 struct input_dev *dev = atkbd->dev;
532 unsigned char param;
533 int i = 0, j = 0;
535 while (i < ARRAY_SIZE(period) - 1 && period[i] < dev->rep[REP_PERIOD])
536 i++;
537 dev->rep[REP_PERIOD] = period[i];
539 while (j < ARRAY_SIZE(delay) - 1 && delay[j] < dev->rep[REP_DELAY])
540 j++;
541 dev->rep[REP_DELAY] = delay[j];
543 param = i | (j << 5);
544 return ps2_command(&atkbd->ps2dev, &param, ATKBD_CMD_SETREP);
547 static int atkbd_set_leds(struct atkbd *atkbd)
549 struct input_dev *dev = atkbd->dev;
550 unsigned char param[2];
552 param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0)
553 | (test_bit(LED_NUML, dev->led) ? 2 : 0)
554 | (test_bit(LED_CAPSL, dev->led) ? 4 : 0);
555 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS))
556 return -1;
558 if (atkbd->extra) {
559 param[0] = 0;
560 param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0)
561 | (test_bit(LED_SLEEP, dev->led) ? 0x02 : 0)
562 | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0)
563 | (test_bit(LED_MISC, dev->led) ? 0x10 : 0)
564 | (test_bit(LED_MUTE, dev->led) ? 0x20 : 0);
565 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS))
566 return -1;
569 return 0;
573 * atkbd_event_work() is used to complete processing of events that
574 * can not be processed by input_event() which is often called from
575 * interrupt context.
578 static void atkbd_event_work(struct work_struct *work)
580 struct atkbd *atkbd = container_of(work, struct atkbd, event_work.work);
582 mutex_lock(&atkbd->mutex);
584 if (!atkbd->enabled) {
586 * Serio ports are resumed asynchronously so while driver core
587 * thinks that device is already fully operational in reality
588 * it may not be ready yet. In this case we need to keep
589 * rescheduling till reconnect completes.
591 schedule_delayed_work(&atkbd->event_work,
592 msecs_to_jiffies(100));
593 } else {
594 if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask))
595 atkbd_set_leds(atkbd);
597 if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask))
598 atkbd_set_repeat_rate(atkbd);
601 mutex_unlock(&atkbd->mutex);
605 * Schedule switch for execution. We need to throttle requests,
606 * otherwise keyboard may become unresponsive.
608 static void atkbd_schedule_event_work(struct atkbd *atkbd, int event_bit)
610 unsigned long delay = msecs_to_jiffies(50);
612 if (time_after(jiffies, atkbd->event_jiffies + delay))
613 delay = 0;
615 atkbd->event_jiffies = jiffies;
616 set_bit(event_bit, &atkbd->event_mask);
617 mb();
618 schedule_delayed_work(&atkbd->event_work, delay);
622 * Event callback from the input module. Events that change the state of
623 * the hardware are processed here. If action can not be performed in
624 * interrupt context it is offloaded to atkbd_event_work.
627 static int atkbd_event(struct input_dev *dev,
628 unsigned int type, unsigned int code, int value)
630 struct atkbd *atkbd = input_get_drvdata(dev);
632 if (!atkbd->write)
633 return -1;
635 switch (type) {
637 case EV_LED:
638 atkbd_schedule_event_work(atkbd, ATKBD_LED_EVENT_BIT);
639 return 0;
641 case EV_REP:
642 if (!atkbd->softrepeat)
643 atkbd_schedule_event_work(atkbd, ATKBD_REP_EVENT_BIT);
644 return 0;
647 return -1;
651 * atkbd_enable() signals that interrupt handler is allowed to
652 * generate input events.
655 static inline void atkbd_enable(struct atkbd *atkbd)
657 serio_pause_rx(atkbd->ps2dev.serio);
658 atkbd->enabled = 1;
659 serio_continue_rx(atkbd->ps2dev.serio);
663 * atkbd_disable() tells input handler that all incoming data except
664 * for ACKs and command response should be dropped.
667 static inline void atkbd_disable(struct atkbd *atkbd)
669 serio_pause_rx(atkbd->ps2dev.serio);
670 atkbd->enabled = 0;
671 serio_continue_rx(atkbd->ps2dev.serio);
675 * atkbd_probe() probes for an AT keyboard on a serio port.
678 static int atkbd_probe(struct atkbd *atkbd)
680 struct ps2dev *ps2dev = &atkbd->ps2dev;
681 unsigned char param[2];
684 * Some systems, where the bit-twiddling when testing the io-lines of the
685 * controller may confuse the keyboard need a full reset of the keyboard. On
686 * these systems the BIOS also usually doesn't do it for us.
689 if (atkbd_reset)
690 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT))
691 printk(KERN_WARNING "atkbd.c: keyboard reset failed on %s\n", ps2dev->serio->phys);
694 * Then we check the keyboard ID. We should get 0xab83 under normal conditions.
695 * Some keyboards report different values, but the first byte is always 0xab or
696 * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this
697 * should make sure we don't try to set the LEDs on it.
700 param[0] = param[1] = 0xa5; /* initialize with invalid values */
701 if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) {
704 * If the get ID command failed, we check if we can at least set the LEDs on
705 * the keyboard. This should work on every keyboard out there. It also turns
706 * the LEDs off, which we want anyway.
708 param[0] = 0;
709 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
710 return -1;
711 atkbd->id = 0xabba;
712 return 0;
715 if (!ps2_is_keyboard_id(param[0]))
716 return -1;
718 atkbd->id = (param[0] << 8) | param[1];
720 if (atkbd->id == 0xaca1 && atkbd->translated) {
721 printk(KERN_ERR "atkbd.c: NCD terminal keyboards are only supported on non-translating\n");
722 printk(KERN_ERR "atkbd.c: controllers. Use i8042.direct=1 to disable translation.\n");
723 return -1;
726 return 0;
730 * atkbd_select_set checks if a keyboard has a working Set 3 support, and
731 * sets it into that. Unfortunately there are keyboards that can be switched
732 * to Set 3, but don't work well in that (BTC Multimedia ...)
735 static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra)
737 struct ps2dev *ps2dev = &atkbd->ps2dev;
738 unsigned char param[2];
740 atkbd->extra = 0;
742 * For known special keyboards we can go ahead and set the correct set.
743 * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and
744 * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards.
747 if (atkbd->translated)
748 return 2;
750 if (atkbd->id == 0xaca1) {
751 param[0] = 3;
752 ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET);
753 return 3;
756 if (allow_extra) {
757 param[0] = 0x71;
758 if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) {
759 atkbd->extra = 1;
760 return 2;
764 if (target_set != 3)
765 return 2;
767 if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) {
768 atkbd->id = param[0] << 8 | param[1];
769 return 2;
772 param[0] = 3;
773 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
774 return 2;
776 param[0] = 0;
777 if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET))
778 return 2;
780 if (param[0] != 3) {
781 param[0] = 2;
782 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
783 return 2;
786 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR);
788 return 3;
791 static int atkbd_reset_state(struct atkbd *atkbd)
793 struct ps2dev *ps2dev = &atkbd->ps2dev;
794 unsigned char param[1];
797 * Set the LEDs to a predefined state (all off).
800 param[0] = 0;
801 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
802 return -1;
805 * Set autorepeat to fastest possible.
808 param[0] = 0;
809 if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP))
810 return -1;
812 return 0;
815 static int atkbd_activate(struct atkbd *atkbd)
817 struct ps2dev *ps2dev = &atkbd->ps2dev;
820 * Enable the keyboard to receive keystrokes.
823 if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) {
824 printk(KERN_ERR "atkbd.c: Failed to enable keyboard on %s\n",
825 ps2dev->serio->phys);
826 return -1;
829 return 0;
833 * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a
834 * reboot.
837 static void atkbd_cleanup(struct serio *serio)
839 struct atkbd *atkbd = serio_get_drvdata(serio);
841 atkbd_disable(atkbd);
842 ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_DEF);
847 * atkbd_disconnect() closes and frees.
850 static void atkbd_disconnect(struct serio *serio)
852 struct atkbd *atkbd = serio_get_drvdata(serio);
854 sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
856 atkbd_disable(atkbd);
858 /* make sure we don't have a command in flight */
859 cancel_delayed_work_sync(&atkbd->event_work);
861 input_unregister_device(atkbd->dev);
862 serio_close(serio);
863 serio_set_drvdata(serio, NULL);
864 kfree(atkbd);
868 * generate release events for the keycodes given in data
870 static void atkbd_apply_forced_release_keylist(struct atkbd* atkbd,
871 const void *data)
873 const unsigned int *keys = data;
874 unsigned int i;
876 if (atkbd->set == 2)
877 for (i = 0; keys[i] != -1U; i++)
878 __set_bit(keys[i], atkbd->force_release_mask);
882 * Most special keys (Fn+F?) on Dell laptops do not generate release
883 * events so we have to do it ourselves.
885 static unsigned int atkbd_dell_laptop_forced_release_keys[] = {
886 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8f, 0x93, -1U
890 * Perform fixup for HP system that doesn't generate release
891 * for its video switch
893 static unsigned int atkbd_hp_forced_release_keys[] = {
894 0x94, -1U
898 * Samsung NC10,NC20 with Fn+F? key release not working
900 static unsigned int atkbd_samsung_forced_release_keys[] = {
901 0x82, 0x83, 0x84, 0x86, 0x88, 0x89, 0xb3, 0xf7, 0xf9, -1U
905 * Amilo Pi 3525 key release for Fn+Volume keys not working
907 static unsigned int atkbd_amilo_pi3525_forced_release_keys[] = {
908 0x20, 0xa0, 0x2e, 0xae, 0x30, 0xb0, -1U
912 * Amilo Xi 3650 key release for light touch bar not working
914 static unsigned int atkbd_amilo_xi3650_forced_release_keys[] = {
915 0x67, 0xed, 0x90, 0xa2, 0x99, 0xa4, 0xae, 0xb0, -1U
919 * Soltech TA12 system with broken key release on volume keys and mute key
921 static unsigned int atkdb_soltech_ta12_forced_release_keys[] = {
922 0xa0, 0xae, 0xb0, -1U
926 * Many notebooks don't send key release event for volume up/down
927 * keys, with key list below common among them
929 static unsigned int atkbd_volume_forced_release_keys[] = {
930 0xae, 0xb0, -1U
934 * OQO 01+ multimedia keys (64--66) generate e0 6x upon release whereas
935 * they should be generating e4-e6 (0x80 | code).
937 static unsigned int atkbd_oqo_01plus_scancode_fixup(struct atkbd *atkbd,
938 unsigned int code)
940 if (atkbd->translated && atkbd->emul == 1 &&
941 (code == 0x64 || code == 0x65 || code == 0x66)) {
942 atkbd->emul = 0;
943 code |= 0x80;
946 return code;
950 * atkbd_set_keycode_table() initializes keyboard's keycode table
951 * according to the selected scancode set
954 static void atkbd_set_keycode_table(struct atkbd *atkbd)
956 unsigned int scancode;
957 int i, j;
959 memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
960 bitmap_zero(atkbd->force_release_mask, ATKBD_KEYMAP_SIZE);
962 if (atkbd->translated) {
963 for (i = 0; i < 128; i++) {
964 scancode = atkbd_unxlate_table[i];
965 atkbd->keycode[i] = atkbd_set2_keycode[scancode];
966 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80];
967 if (atkbd->scroll)
968 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
969 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2)
970 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
972 } else if (atkbd->set == 3) {
973 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
974 } else {
975 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
977 if (atkbd->scroll)
978 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) {
979 scancode = atkbd_scroll_keys[i].set2;
980 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode;
985 * HANGEUL and HANJA keys do not send release events so we need to
986 * generate such events ourselves
988 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL);
989 atkbd->keycode[scancode] = KEY_HANGEUL;
990 __set_bit(scancode, atkbd->force_release_mask);
992 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA);
993 atkbd->keycode[scancode] = KEY_HANJA;
994 __set_bit(scancode, atkbd->force_release_mask);
997 * Perform additional fixups
999 if (atkbd_platform_fixup)
1000 atkbd_platform_fixup(atkbd, atkbd_platform_fixup_data);
1004 * atkbd_set_device_attrs() sets up keyboard's input device structure
1007 static void atkbd_set_device_attrs(struct atkbd *atkbd)
1009 struct input_dev *input_dev = atkbd->dev;
1010 int i;
1012 if (atkbd->extra)
1013 snprintf(atkbd->name, sizeof(atkbd->name),
1014 "AT Set 2 Extra keyboard");
1015 else
1016 snprintf(atkbd->name, sizeof(atkbd->name),
1017 "AT %s Set %d keyboard",
1018 atkbd->translated ? "Translated" : "Raw", atkbd->set);
1020 snprintf(atkbd->phys, sizeof(atkbd->phys),
1021 "%s/input0", atkbd->ps2dev.serio->phys);
1023 input_dev->name = atkbd->name;
1024 input_dev->phys = atkbd->phys;
1025 input_dev->id.bustype = BUS_I8042;
1026 input_dev->id.vendor = 0x0001;
1027 input_dev->id.product = atkbd->translated ? 1 : atkbd->set;
1028 input_dev->id.version = atkbd->id;
1029 input_dev->event = atkbd_event;
1030 input_dev->dev.parent = &atkbd->ps2dev.serio->dev;
1032 input_set_drvdata(input_dev, atkbd);
1034 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
1035 BIT_MASK(EV_MSC);
1037 if (atkbd->write) {
1038 input_dev->evbit[0] |= BIT_MASK(EV_LED);
1039 input_dev->ledbit[0] = BIT_MASK(LED_NUML) |
1040 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL);
1043 if (atkbd->extra)
1044 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) |
1045 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) |
1046 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC);
1048 if (!atkbd->softrepeat) {
1049 input_dev->rep[REP_DELAY] = 250;
1050 input_dev->rep[REP_PERIOD] = 33;
1053 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) :
1054 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN);
1056 if (atkbd->scroll) {
1057 input_dev->evbit[0] |= BIT_MASK(EV_REL);
1058 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) |
1059 BIT_MASK(REL_HWHEEL);
1060 __set_bit(BTN_MIDDLE, input_dev->keybit);
1063 input_dev->keycode = atkbd->keycode;
1064 input_dev->keycodesize = sizeof(unsigned short);
1065 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
1067 for (i = 0; i < ATKBD_KEYMAP_SIZE; i++)
1068 if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL)
1069 __set_bit(atkbd->keycode[i], input_dev->keybit);
1073 * atkbd_connect() is called when the serio module finds an interface
1074 * that isn't handled yet by an appropriate device driver. We check if
1075 * there is an AT keyboard out there and if yes, we register ourselves
1076 * to the input module.
1079 static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
1081 struct atkbd *atkbd;
1082 struct input_dev *dev;
1083 int err = -ENOMEM;
1085 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL);
1086 dev = input_allocate_device();
1087 if (!atkbd || !dev)
1088 goto fail1;
1090 atkbd->dev = dev;
1091 ps2_init(&atkbd->ps2dev, serio);
1092 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work);
1093 mutex_init(&atkbd->mutex);
1095 switch (serio->id.type) {
1097 case SERIO_8042_XL:
1098 atkbd->translated = 1;
1099 case SERIO_8042:
1100 if (serio->write)
1101 atkbd->write = 1;
1102 break;
1105 atkbd->softraw = atkbd_softraw;
1106 atkbd->softrepeat = atkbd_softrepeat;
1107 atkbd->scroll = atkbd_scroll;
1109 if (atkbd->softrepeat)
1110 atkbd->softraw = 1;
1112 serio_set_drvdata(serio, atkbd);
1114 err = serio_open(serio, drv);
1115 if (err)
1116 goto fail2;
1118 if (atkbd->write) {
1120 if (atkbd_probe(atkbd)) {
1121 err = -ENODEV;
1122 goto fail3;
1125 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
1126 atkbd_reset_state(atkbd);
1127 atkbd_activate(atkbd);
1129 } else {
1130 atkbd->set = 2;
1131 atkbd->id = 0xab00;
1134 atkbd_set_keycode_table(atkbd);
1135 atkbd_set_device_attrs(atkbd);
1137 err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group);
1138 if (err)
1139 goto fail3;
1141 atkbd_enable(atkbd);
1143 err = input_register_device(atkbd->dev);
1144 if (err)
1145 goto fail4;
1147 return 0;
1149 fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
1150 fail3: serio_close(serio);
1151 fail2: serio_set_drvdata(serio, NULL);
1152 fail1: input_free_device(dev);
1153 kfree(atkbd);
1154 return err;
1158 * atkbd_reconnect() tries to restore keyboard into a sane state and is
1159 * most likely called on resume.
1162 static int atkbd_reconnect(struct serio *serio)
1164 struct atkbd *atkbd = serio_get_drvdata(serio);
1165 struct serio_driver *drv = serio->drv;
1166 int retval = -1;
1168 if (!atkbd || !drv) {
1169 printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n");
1170 return -1;
1173 mutex_lock(&atkbd->mutex);
1175 atkbd_disable(atkbd);
1177 if (atkbd->write) {
1178 if (atkbd_probe(atkbd))
1179 goto out;
1181 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
1182 goto out;
1184 atkbd_activate(atkbd);
1187 * Restore LED state and repeat rate. While input core
1188 * will do this for us at resume time reconnect may happen
1189 * because user requested it via sysfs or simply because
1190 * keyboard was unplugged and plugged in again so we need
1191 * to do it ourselves here.
1193 atkbd_set_leds(atkbd);
1194 if (!atkbd->softrepeat)
1195 atkbd_set_repeat_rate(atkbd);
1199 atkbd_enable(atkbd);
1200 retval = 0;
1202 out:
1203 mutex_unlock(&atkbd->mutex);
1204 return retval;
1207 static struct serio_device_id atkbd_serio_ids[] = {
1209 .type = SERIO_8042,
1210 .proto = SERIO_ANY,
1211 .id = SERIO_ANY,
1212 .extra = SERIO_ANY,
1215 .type = SERIO_8042_XL,
1216 .proto = SERIO_ANY,
1217 .id = SERIO_ANY,
1218 .extra = SERIO_ANY,
1221 .type = SERIO_RS232,
1222 .proto = SERIO_PS2SER,
1223 .id = SERIO_ANY,
1224 .extra = SERIO_ANY,
1226 { 0 }
1229 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
1231 static struct serio_driver atkbd_drv = {
1232 .driver = {
1233 .name = "atkbd",
1235 .description = DRIVER_DESC,
1236 .id_table = atkbd_serio_ids,
1237 .interrupt = atkbd_interrupt,
1238 .connect = atkbd_connect,
1239 .reconnect = atkbd_reconnect,
1240 .disconnect = atkbd_disconnect,
1241 .cleanup = atkbd_cleanup,
1244 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
1245 ssize_t (*handler)(struct atkbd *, char *))
1247 struct serio *serio = to_serio_port(dev);
1248 struct atkbd *atkbd = serio_get_drvdata(serio);
1250 return handler(atkbd, buf);
1253 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
1254 ssize_t (*handler)(struct atkbd *, const char *, size_t))
1256 struct serio *serio = to_serio_port(dev);
1257 struct atkbd *atkbd = serio_get_drvdata(serio);
1258 int retval;
1260 retval = mutex_lock_interruptible(&atkbd->mutex);
1261 if (retval)
1262 return retval;
1264 atkbd_disable(atkbd);
1265 retval = handler(atkbd, buf, count);
1266 atkbd_enable(atkbd);
1268 mutex_unlock(&atkbd->mutex);
1270 return retval;
1273 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
1275 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
1278 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
1280 struct input_dev *old_dev, *new_dev;
1281 unsigned long value;
1282 int err;
1283 unsigned char old_extra, old_set;
1285 if (!atkbd->write)
1286 return -EIO;
1288 if (strict_strtoul(buf, 10, &value) || value > 1)
1289 return -EINVAL;
1291 if (atkbd->extra != value) {
1293 * Since device's properties will change we need to
1294 * unregister old device. But allocate and register
1295 * new one first to make sure we have it.
1297 old_dev = atkbd->dev;
1298 old_extra = atkbd->extra;
1299 old_set = atkbd->set;
1301 new_dev = input_allocate_device();
1302 if (!new_dev)
1303 return -ENOMEM;
1305 atkbd->dev = new_dev;
1306 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
1307 atkbd_reset_state(atkbd);
1308 atkbd_activate(atkbd);
1309 atkbd_set_keycode_table(atkbd);
1310 atkbd_set_device_attrs(atkbd);
1312 err = input_register_device(atkbd->dev);
1313 if (err) {
1314 input_free_device(new_dev);
1316 atkbd->dev = old_dev;
1317 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1318 atkbd_set_keycode_table(atkbd);
1319 atkbd_set_device_attrs(atkbd);
1321 return err;
1323 input_unregister_device(old_dev);
1326 return count;
1329 static ssize_t atkbd_show_force_release(struct atkbd *atkbd, char *buf)
1331 size_t len = bitmap_scnlistprintf(buf, PAGE_SIZE - 2,
1332 atkbd->force_release_mask, ATKBD_KEYMAP_SIZE);
1334 buf[len++] = '\n';
1335 buf[len] = '\0';
1337 return len;
1340 static ssize_t atkbd_set_force_release(struct atkbd *atkbd,
1341 const char *buf, size_t count)
1343 /* 64 bytes on stack should be acceptable */
1344 DECLARE_BITMAP(new_mask, ATKBD_KEYMAP_SIZE);
1345 int err;
1347 err = bitmap_parselist(buf, new_mask, ATKBD_KEYMAP_SIZE);
1348 if (err)
1349 return err;
1351 memcpy(atkbd->force_release_mask, new_mask, sizeof(atkbd->force_release_mask));
1352 return count;
1356 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
1358 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
1361 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
1363 struct input_dev *old_dev, *new_dev;
1364 unsigned long value;
1365 int err;
1366 unsigned char old_scroll;
1368 if (strict_strtoul(buf, 10, &value) || value > 1)
1369 return -EINVAL;
1371 if (atkbd->scroll != value) {
1372 old_dev = atkbd->dev;
1373 old_scroll = atkbd->scroll;
1375 new_dev = input_allocate_device();
1376 if (!new_dev)
1377 return -ENOMEM;
1379 atkbd->dev = new_dev;
1380 atkbd->scroll = value;
1381 atkbd_set_keycode_table(atkbd);
1382 atkbd_set_device_attrs(atkbd);
1384 err = input_register_device(atkbd->dev);
1385 if (err) {
1386 input_free_device(new_dev);
1388 atkbd->scroll = old_scroll;
1389 atkbd->dev = old_dev;
1390 atkbd_set_keycode_table(atkbd);
1391 atkbd_set_device_attrs(atkbd);
1393 return err;
1395 input_unregister_device(old_dev);
1397 return count;
1400 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
1402 return sprintf(buf, "%d\n", atkbd->set);
1405 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
1407 struct input_dev *old_dev, *new_dev;
1408 unsigned long value;
1409 int err;
1410 unsigned char old_set, old_extra;
1412 if (!atkbd->write)
1413 return -EIO;
1415 if (strict_strtoul(buf, 10, &value) || (value != 2 && value != 3))
1416 return -EINVAL;
1418 if (atkbd->set != value) {
1419 old_dev = atkbd->dev;
1420 old_extra = atkbd->extra;
1421 old_set = atkbd->set;
1423 new_dev = input_allocate_device();
1424 if (!new_dev)
1425 return -ENOMEM;
1427 atkbd->dev = new_dev;
1428 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra);
1429 atkbd_reset_state(atkbd);
1430 atkbd_activate(atkbd);
1431 atkbd_set_keycode_table(atkbd);
1432 atkbd_set_device_attrs(atkbd);
1434 err = input_register_device(atkbd->dev);
1435 if (err) {
1436 input_free_device(new_dev);
1438 atkbd->dev = old_dev;
1439 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1440 atkbd_set_keycode_table(atkbd);
1441 atkbd_set_device_attrs(atkbd);
1443 return err;
1445 input_unregister_device(old_dev);
1447 return count;
1450 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
1452 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
1455 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
1457 struct input_dev *old_dev, *new_dev;
1458 unsigned long value;
1459 int err;
1460 unsigned char old_softrepeat, old_softraw;
1462 if (!atkbd->write)
1463 return -EIO;
1465 if (strict_strtoul(buf, 10, &value) || value > 1)
1466 return -EINVAL;
1468 if (atkbd->softrepeat != value) {
1469 old_dev = atkbd->dev;
1470 old_softrepeat = atkbd->softrepeat;
1471 old_softraw = atkbd->softraw;
1473 new_dev = input_allocate_device();
1474 if (!new_dev)
1475 return -ENOMEM;
1477 atkbd->dev = new_dev;
1478 atkbd->softrepeat = value;
1479 if (atkbd->softrepeat)
1480 atkbd->softraw = 1;
1481 atkbd_set_device_attrs(atkbd);
1483 err = input_register_device(atkbd->dev);
1484 if (err) {
1485 input_free_device(new_dev);
1487 atkbd->dev = old_dev;
1488 atkbd->softrepeat = old_softrepeat;
1489 atkbd->softraw = old_softraw;
1490 atkbd_set_device_attrs(atkbd);
1492 return err;
1494 input_unregister_device(old_dev);
1496 return count;
1500 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
1502 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
1505 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
1507 struct input_dev *old_dev, *new_dev;
1508 unsigned long value;
1509 int err;
1510 unsigned char old_softraw;
1512 if (strict_strtoul(buf, 10, &value) || value > 1)
1513 return -EINVAL;
1515 if (atkbd->softraw != value) {
1516 old_dev = atkbd->dev;
1517 old_softraw = atkbd->softraw;
1519 new_dev = input_allocate_device();
1520 if (!new_dev)
1521 return -ENOMEM;
1523 atkbd->dev = new_dev;
1524 atkbd->softraw = value;
1525 atkbd_set_device_attrs(atkbd);
1527 err = input_register_device(atkbd->dev);
1528 if (err) {
1529 input_free_device(new_dev);
1531 atkbd->dev = old_dev;
1532 atkbd->softraw = old_softraw;
1533 atkbd_set_device_attrs(atkbd);
1535 return err;
1537 input_unregister_device(old_dev);
1539 return count;
1542 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
1544 return sprintf(buf, "%lu\n", atkbd->err_count);
1547 static int __init atkbd_setup_forced_release(const struct dmi_system_id *id)
1549 atkbd_platform_fixup = atkbd_apply_forced_release_keylist;
1550 atkbd_platform_fixup_data = id->driver_data;
1552 return 0;
1555 static int __init atkbd_setup_scancode_fixup(const struct dmi_system_id *id)
1557 atkbd_platform_scancode_fixup = id->driver_data;
1559 return 0;
1562 static const struct dmi_system_id atkbd_dmi_quirk_table[] __initconst = {
1564 .matches = {
1565 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
1566 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1568 .callback = atkbd_setup_forced_release,
1569 .driver_data = atkbd_dell_laptop_forced_release_keys,
1572 .matches = {
1573 DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
1574 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1576 .callback = atkbd_setup_forced_release,
1577 .driver_data = atkbd_dell_laptop_forced_release_keys,
1580 .matches = {
1581 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1582 DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"),
1584 .callback = atkbd_setup_forced_release,
1585 .driver_data = atkbd_hp_forced_release_keys,
1588 .matches = {
1589 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1590 DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion ZV6100"),
1592 .callback = atkbd_setup_forced_release,
1593 .driver_data = atkbd_volume_forced_release_keys,
1596 .matches = {
1597 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1598 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4000"),
1600 .callback = atkbd_setup_forced_release,
1601 .driver_data = atkbd_volume_forced_release_keys,
1604 .matches = {
1605 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1606 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4100"),
1608 .callback = atkbd_setup_forced_release,
1609 .driver_data = atkbd_volume_forced_release_keys,
1612 .matches = {
1613 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1614 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4200"),
1616 .callback = atkbd_setup_forced_release,
1617 .driver_data = atkbd_volume_forced_release_keys,
1620 /* Inventec Symphony */
1621 .matches = {
1622 DMI_MATCH(DMI_SYS_VENDOR, "INVENTEC"),
1623 DMI_MATCH(DMI_PRODUCT_NAME, "SYMPHONY 6.0/7.0"),
1625 .callback = atkbd_setup_forced_release,
1626 .driver_data = atkbd_volume_forced_release_keys,
1629 /* Samsung NC10 */
1630 .matches = {
1631 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1632 DMI_MATCH(DMI_PRODUCT_NAME, "NC10"),
1634 .callback = atkbd_setup_forced_release,
1635 .driver_data = atkbd_samsung_forced_release_keys,
1638 /* Samsung NC20 */
1639 .matches = {
1640 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1641 DMI_MATCH(DMI_PRODUCT_NAME, "NC20"),
1643 .callback = atkbd_setup_forced_release,
1644 .driver_data = atkbd_samsung_forced_release_keys,
1647 /* Samsung SQ45S70S */
1648 .matches = {
1649 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1650 DMI_MATCH(DMI_PRODUCT_NAME, "SQ45S70S"),
1652 .callback = atkbd_setup_forced_release,
1653 .driver_data = atkbd_samsung_forced_release_keys,
1656 /* Fujitsu Amilo PA 1510 */
1657 .matches = {
1658 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1659 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 1510"),
1661 .callback = atkbd_setup_forced_release,
1662 .driver_data = atkbd_volume_forced_release_keys,
1665 /* Fujitsu Amilo Pi 3525 */
1666 .matches = {
1667 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1668 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 3525"),
1670 .callback = atkbd_setup_forced_release,
1671 .driver_data = atkbd_amilo_pi3525_forced_release_keys,
1674 /* Fujitsu Amilo Xi 3650 */
1675 .matches = {
1676 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1677 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 3650"),
1679 .callback = atkbd_setup_forced_release,
1680 .driver_data = atkbd_amilo_xi3650_forced_release_keys,
1683 .matches = {
1684 DMI_MATCH(DMI_SYS_VENDOR, "Soltech Corporation"),
1685 DMI_MATCH(DMI_PRODUCT_NAME, "TA12"),
1687 .callback = atkbd_setup_forced_release,
1688 .driver_data = atkdb_soltech_ta12_forced_release_keys,
1691 /* OQO Model 01+ */
1692 .matches = {
1693 DMI_MATCH(DMI_SYS_VENDOR, "OQO"),
1694 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPTO"),
1696 .callback = atkbd_setup_scancode_fixup,
1697 .driver_data = atkbd_oqo_01plus_scancode_fixup,
1702 static int __init atkbd_init(void)
1704 dmi_check_system(atkbd_dmi_quirk_table);
1706 return serio_register_driver(&atkbd_drv);
1709 static void __exit atkbd_exit(void)
1711 serio_unregister_driver(&atkbd_drv);
1714 module_init(atkbd_init);
1715 module_exit(atkbd_exit);