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Staging: hv: mousevsc: Cleanup and properly implement reportdesc_callback()
[zen-stable.git] / drivers / input / keyboard / atkbd.c
blob19cfc0cf558c99b18875ca0fd0b6aac26134e356
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 bool atkbd_reset;
44 #else
45 static bool atkbd_reset = true;
46 #endif
47 module_param_named(reset, atkbd_reset, bool, 0);
48 MODULE_PARM_DESC(reset, "Reset keyboard during initialization");
49
50 static bool atkbd_softrepeat;
51 module_param_named(softrepeat, atkbd_softrepeat, bool, 0);
52 MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat");
53
54 static bool atkbd_softraw = true;
55 module_param_named(softraw, atkbd_softraw, bool, 0);
56 MODULE_PARM_DESC(softraw, "Use software generated rawmode");
57
58 static bool 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 bool 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 static bool atkbd_terminal;
67 module_param_named(terminal, atkbd_terminal, bool, 0);
68 MODULE_PARM_DESC(terminal, "Enable break codes on an IBM Terminal keyboard connected via AT/PS2");
69
70 /*
71 * Scancode to keycode tables. These are just the default setting, and
72 * are loadable via a userland utility.
73 */
74
75 #define ATKBD_KEYMAP_SIZE 512
76
77 static const unsigned short atkbd_set2_keycode[ATKBD_KEYMAP_SIZE] = {
78
79 #ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES
80
81 /* XXX: need a more general approach */
82
83 #include "hpps2atkbd.h" /* include the keyboard scancodes */
84
85 #else
86 0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117,
87 0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0,
88 0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183,
89 0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185,
90 0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0,
91 0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85,
92 0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0,
93 82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99,
94
95 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
96 217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125,
97 173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127,
98 159, 0,115, 0,164, 0, 0,116,158, 0,172,166, 0, 0, 0,142,
99 157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0,
100 226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0,
101 0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112,
102 110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0,
103
104 0, 0, 0, 65, 99,
105 #endif
106 };
107
108 static const unsigned short atkbd_set3_keycode[ATKBD_KEYMAP_SIZE] = {
109
110 0, 0, 0, 0, 0, 0, 0, 59, 1,138,128,129,130, 15, 41, 60,
111 131, 29, 42, 86, 58, 16, 2, 61,133, 56, 44, 31, 30, 17, 3, 62,
112 134, 46, 45, 32, 18, 5, 4, 63,135, 57, 47, 33, 20, 19, 6, 64,
113 136, 49, 48, 35, 34, 21, 7, 65,137,100, 50, 36, 22, 8, 9, 66,
114 125, 51, 37, 23, 24, 11, 10, 67,126, 52, 53, 38, 39, 25, 12, 68,
115 113,114, 40, 43, 26, 13, 87, 99, 97, 54, 28, 27, 43, 43, 88, 70,
116 108,105,119,103,111,107, 14,110, 0, 79,106, 75, 71,109,102,104,
117 82, 83, 80, 76, 77, 72, 69, 98, 0, 96, 81, 0, 78, 73, 55,183,
118
119 184,185,186,187, 74, 94, 92, 93, 0, 0, 0,125,126,127,112, 0,
120 0,139,172,163,165,115,152,172,166,140,160,154,113,114,167,168,
121 148,149,147,140
122 };
123
124 static const unsigned short atkbd_unxlate_table[128] = {
125 0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13,
126 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27,
127 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42,
128 50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3,
129 11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105,
130 114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63,
131 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111,
132 19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110
133 };
134
135 #define ATKBD_CMD_SETLEDS 0x10ed
136 #define ATKBD_CMD_GSCANSET 0x11f0
137 #define ATKBD_CMD_SSCANSET 0x10f0
138 #define ATKBD_CMD_GETID 0x02f2
139 #define ATKBD_CMD_SETREP 0x10f3
140 #define ATKBD_CMD_ENABLE 0x00f4
141 #define ATKBD_CMD_RESET_DIS 0x00f5 /* Reset to defaults and disable */
142 #define ATKBD_CMD_RESET_DEF 0x00f6 /* Reset to defaults */
143 #define ATKBD_CMD_SETALL_MB 0x00f8 /* Set all keys to give break codes */
144 #define ATKBD_CMD_SETALL_MBR 0x00fa /* ... and repeat */
145 #define ATKBD_CMD_RESET_BAT 0x02ff
146 #define ATKBD_CMD_RESEND 0x00fe
147 #define ATKBD_CMD_EX_ENABLE 0x10ea
148 #define ATKBD_CMD_EX_SETLEDS 0x20eb
149 #define ATKBD_CMD_OK_GETID 0x02e8
150
151 #define ATKBD_RET_ACK 0xfa
152 #define ATKBD_RET_NAK 0xfe
153 #define ATKBD_RET_BAT 0xaa
154 #define ATKBD_RET_EMUL0 0xe0
155 #define ATKBD_RET_EMUL1 0xe1
156 #define ATKBD_RET_RELEASE 0xf0
157 #define ATKBD_RET_HANJA 0xf1
158 #define ATKBD_RET_HANGEUL 0xf2
159 #define ATKBD_RET_ERR 0xff
160
161 #define ATKBD_KEY_UNKNOWN 0
162 #define ATKBD_KEY_NULL 255
163
164 #define ATKBD_SCR_1 0xfffe
165 #define ATKBD_SCR_2 0xfffd
166 #define ATKBD_SCR_4 0xfffc
167 #define ATKBD_SCR_8 0xfffb
168 #define ATKBD_SCR_CLICK 0xfffa
169 #define ATKBD_SCR_LEFT 0xfff9
170 #define ATKBD_SCR_RIGHT 0xfff8
171
172 #define ATKBD_SPECIAL ATKBD_SCR_RIGHT
173
174 #define ATKBD_LED_EVENT_BIT 0
175 #define ATKBD_REP_EVENT_BIT 1
176
177 #define ATKBD_XL_ERR 0x01
178 #define ATKBD_XL_BAT 0x02
179 #define ATKBD_XL_ACK 0x04
180 #define ATKBD_XL_NAK 0x08
181 #define ATKBD_XL_HANGEUL 0x10
182 #define ATKBD_XL_HANJA 0x20
183
184 static const struct {
185 unsigned short keycode;
186 unsigned char set2;
187 } atkbd_scroll_keys[] = {
188 { ATKBD_SCR_1, 0xc5 },
189 { ATKBD_SCR_2, 0x9d },
190 { ATKBD_SCR_4, 0xa4 },
191 { ATKBD_SCR_8, 0x9b },
192 { ATKBD_SCR_CLICK, 0xe0 },
193 { ATKBD_SCR_LEFT, 0xcb },
194 { ATKBD_SCR_RIGHT, 0xd2 },
195 };
196
197 /*
198 * The atkbd control structure
199 */
200
201 struct atkbd {
202
203 struct ps2dev ps2dev;
204 struct input_dev *dev;
205
206 /* Written only during init */
207 char name[64];
208 char phys[32];
209
210 unsigned short id;
211 unsigned short keycode[ATKBD_KEYMAP_SIZE];
212 DECLARE_BITMAP(force_release_mask, ATKBD_KEYMAP_SIZE);
213 unsigned char set;
214 bool translated;
215 bool extra;
216 bool write;
217 bool softrepeat;
218 bool softraw;
219 bool scroll;
220 bool enabled;
221
222 /* Accessed only from interrupt */
223 unsigned char emul;
224 bool resend;
225 bool release;
226 unsigned long xl_bit;
227 unsigned int last;
228 unsigned long time;
229 unsigned long err_count;
230
231 struct delayed_work event_work;
232 unsigned long event_jiffies;
233 unsigned long event_mask;
234
235 /* Serializes reconnect(), attr->set() and event work */
236 struct mutex mutex;
237 };
238
239 /*
240 * System-specific keymap fixup routine
241 */
242 static void (*atkbd_platform_fixup)(struct atkbd *, const void *data);
243 static void *atkbd_platform_fixup_data;
244 static unsigned int (*atkbd_platform_scancode_fixup)(struct atkbd *, unsigned int);
245
246 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
247 ssize_t (*handler)(struct atkbd *, char *));
248 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
249 ssize_t (*handler)(struct atkbd *, const char *, size_t));
250 #define ATKBD_DEFINE_ATTR(_name) \
251 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
252 static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \
253 static ssize_t atkbd_do_show_##_name(struct device *d, \
254 struct device_attribute *attr, char *b) \
255 { \
256 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
257 } \
258 static ssize_t atkbd_do_set_##_name(struct device *d, \
259 struct device_attribute *attr, const char *b, size_t s) \
260 { \
261 return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name); \
262 } \
263 static struct device_attribute atkbd_attr_##_name = \
264 __ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name);
265
266 ATKBD_DEFINE_ATTR(extra);
267 ATKBD_DEFINE_ATTR(force_release);
268 ATKBD_DEFINE_ATTR(scroll);
269 ATKBD_DEFINE_ATTR(set);
270 ATKBD_DEFINE_ATTR(softrepeat);
271 ATKBD_DEFINE_ATTR(softraw);
272
273 #define ATKBD_DEFINE_RO_ATTR(_name) \
274 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
275 static ssize_t atkbd_do_show_##_name(struct device *d, \
276 struct device_attribute *attr, char *b) \
277 { \
278 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
279 } \
280 static struct device_attribute atkbd_attr_##_name = \
281 __ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL);
282
283 ATKBD_DEFINE_RO_ATTR(err_count);
284
285 static struct attribute *atkbd_attributes[] = {
286 &atkbd_attr_extra.attr,
287 &atkbd_attr_force_release.attr,
288 &atkbd_attr_scroll.attr,
289 &atkbd_attr_set.attr,
290 &atkbd_attr_softrepeat.attr,
291 &atkbd_attr_softraw.attr,
292 &atkbd_attr_err_count.attr,
293 NULL
294 };
295
296 static struct attribute_group atkbd_attribute_group = {
297 .attrs = atkbd_attributes,
298 };
299
300 static const unsigned int xl_table[] = {
301 ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK,
302 ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL,
303 };
304
305 /*
306 * Checks if we should mangle the scancode to extract 'release' bit
307 * in translated mode.
308 */
309 static bool atkbd_need_xlate(unsigned long xl_bit, unsigned char code)
310 {
311 int i;
312
313 if (code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1)
314 return false;
315
316 for (i = 0; i < ARRAY_SIZE(xl_table); i++)
317 if (code == xl_table[i])
318 return test_bit(i, &xl_bit);
319
320 return true;
321 }
322
323 /*
324 * Calculates new value of xl_bit so the driver can distinguish
325 * between make/break pair of scancodes for select keys and PS/2
326 * protocol responses.
327 */
328 static void atkbd_calculate_xl_bit(struct atkbd *atkbd, unsigned char code)
329 {
330 int i;
331
332 for (i = 0; i < ARRAY_SIZE(xl_table); i++) {
333 if (!((code ^ xl_table[i]) & 0x7f)) {
334 if (code & 0x80)
335 __clear_bit(i, &atkbd->xl_bit);
336 else
337 __set_bit(i, &atkbd->xl_bit);
338 break;
339 }
340 }
341 }
342
343 /*
344 * Encode the scancode, 0xe0 prefix, and high bit into a single integer,
345 * keeping kernel 2.4 compatibility for set 2
346 */
347 static unsigned int atkbd_compat_scancode(struct atkbd *atkbd, unsigned int code)
348 {
349 if (atkbd->set == 3) {
350 if (atkbd->emul == 1)
351 code |= 0x100;
352 } else {
353 code = (code & 0x7f) | ((code & 0x80) << 1);
354 if (atkbd->emul == 1)
355 code |= 0x80;
356 }
357
358 return code;
359 }
360
361 /*
362 * atkbd_interrupt(). Here takes place processing of data received from
363 * the keyboard into events.
364 */
365
366 static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data,
367 unsigned int flags)
368 {
369 struct atkbd *atkbd = serio_get_drvdata(serio);
370 struct input_dev *dev = atkbd->dev;
371 unsigned int code = data;
372 int scroll = 0, hscroll = 0, click = -1;
373 int value;
374 unsigned short keycode;
375
376 dev_dbg(&serio->dev, "Received %02x flags %02x\n", data, flags);
377
378 #if !defined(__i386__) && !defined (__x86_64__)
379 if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) {
380 dev_warn(&serio->dev, "Frame/parity error: %02x\n", flags);
381 serio_write(serio, ATKBD_CMD_RESEND);
382 atkbd->resend = true;
383 goto out;
384 }
385
386 if (!flags && data == ATKBD_RET_ACK)
387 atkbd->resend = false;
388 #endif
389
390 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_ACK))
391 if (ps2_handle_ack(&atkbd->ps2dev, data))
392 goto out;
393
394 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_CMD))
395 if (ps2_handle_response(&atkbd->ps2dev, data))
396 goto out;
397
398 if (!atkbd->enabled)
399 goto out;
400
401 input_event(dev, EV_MSC, MSC_RAW, code);
402
403 if (atkbd_platform_scancode_fixup)
404 code = atkbd_platform_scancode_fixup(atkbd, code);
405
406 if (atkbd->translated) {
407
408 if (atkbd->emul || atkbd_need_xlate(atkbd->xl_bit, code)) {
409 atkbd->release = code >> 7;
410 code &= 0x7f;
411 }
412
413 if (!atkbd->emul)
414 atkbd_calculate_xl_bit(atkbd, data);
415 }
416
417 switch (code) {
418 case ATKBD_RET_BAT:
419 atkbd->enabled = false;
420 serio_reconnect(atkbd->ps2dev.serio);
421 goto out;
422 case ATKBD_RET_EMUL0:
423 atkbd->emul = 1;
424 goto out;
425 case ATKBD_RET_EMUL1:
426 atkbd->emul = 2;
427 goto out;
428 case ATKBD_RET_RELEASE:
429 atkbd->release = true;
430 goto out;
431 case ATKBD_RET_ACK:
432 case ATKBD_RET_NAK:
433 if (printk_ratelimit())
434 dev_warn(&serio->dev,
435 "Spurious %s on %s. "
436 "Some program might be trying access hardware directly.\n",
437 data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys);
438 goto out;
439 case ATKBD_RET_ERR:
440 atkbd->err_count++;
441 dev_dbg(&serio->dev, "Keyboard on %s reports too many keys pressed.\n",
442 serio->phys);
443 goto out;
444 }
445
446 code = atkbd_compat_scancode(atkbd, code);
447
448 if (atkbd->emul && --atkbd->emul)
449 goto out;
450
451 keycode = atkbd->keycode[code];
452
453 if (keycode != ATKBD_KEY_NULL)
454 input_event(dev, EV_MSC, MSC_SCAN, code);
455
456 switch (keycode) {
457 case ATKBD_KEY_NULL:
458 break;
459 case ATKBD_KEY_UNKNOWN:
460 dev_warn(&serio->dev,
461 "Unknown key %s (%s set %d, code %#x on %s).\n",
462 atkbd->release ? "released" : "pressed",
463 atkbd->translated ? "translated" : "raw",
464 atkbd->set, code, serio->phys);
465 dev_warn(&serio->dev,
466 "Use 'setkeycodes %s%02x <keycode>' to make it known.\n",
467 code & 0x80 ? "e0" : "", code & 0x7f);
468 input_sync(dev);
469 break;
470 case ATKBD_SCR_1:
471 scroll = 1;
472 break;
473 case ATKBD_SCR_2:
474 scroll = 2;
475 break;
476 case ATKBD_SCR_4:
477 scroll = 4;
478 break;
479 case ATKBD_SCR_8:
480 scroll = 8;
481 break;
482 case ATKBD_SCR_CLICK:
483 click = !atkbd->release;
484 break;
485 case ATKBD_SCR_LEFT:
486 hscroll = -1;
487 break;
488 case ATKBD_SCR_RIGHT:
489 hscroll = 1;
490 break;
491 default:
492 if (atkbd->release) {
493 value = 0;
494 atkbd->last = 0;
495 } else if (!atkbd->softrepeat && test_bit(keycode, dev->key)) {
496 /* Workaround Toshiba laptop multiple keypress */
497 value = time_before(jiffies, atkbd->time) && atkbd->last == code ? 1 : 2;
498 } else {
499 value = 1;
500 atkbd->last = code;
501 atkbd->time = jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]) / 2;
502 }
503
504 input_event(dev, EV_KEY, keycode, value);
505 input_sync(dev);
506
507 if (value && test_bit(code, atkbd->force_release_mask)) {
508 input_report_key(dev, keycode, 0);
509 input_sync(dev);
510 }
511 }
512
513 if (atkbd->scroll) {
514 if (click != -1)
515 input_report_key(dev, BTN_MIDDLE, click);
516 input_report_rel(dev, REL_WHEEL,
517 atkbd->release ? -scroll : scroll);
518 input_report_rel(dev, REL_HWHEEL, hscroll);
519 input_sync(dev);
520 }
521
522 atkbd->release = false;
523 out:
524 return IRQ_HANDLED;
525 }
526
527 static int atkbd_set_repeat_rate(struct atkbd *atkbd)
528 {
529 const short period[32] =
530 { 33, 37, 42, 46, 50, 54, 58, 63, 67, 75, 83, 92, 100, 109, 116, 125,
531 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 };
532 const short delay[4] =
533 { 250, 500, 750, 1000 };
534
535 struct input_dev *dev = atkbd->dev;
536 unsigned char param;
537 int i = 0, j = 0;
538
539 while (i < ARRAY_SIZE(period) - 1 && period[i] < dev->rep[REP_PERIOD])
540 i++;
541 dev->rep[REP_PERIOD] = period[i];
542
543 while (j < ARRAY_SIZE(delay) - 1 && delay[j] < dev->rep[REP_DELAY])
544 j++;
545 dev->rep[REP_DELAY] = delay[j];
546
547 param = i | (j << 5);
548 return ps2_command(&atkbd->ps2dev, &param, ATKBD_CMD_SETREP);
549 }
550
551 static int atkbd_set_leds(struct atkbd *atkbd)
552 {
553 struct input_dev *dev = atkbd->dev;
554 unsigned char param[2];
555
556 param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0)
557 | (test_bit(LED_NUML, dev->led) ? 2 : 0)
558 | (test_bit(LED_CAPSL, dev->led) ? 4 : 0);
559 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS))
560 return -1;
561
562 if (atkbd->extra) {
563 param[0] = 0;
564 param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0)
565 | (test_bit(LED_SLEEP, dev->led) ? 0x02 : 0)
566 | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0)
567 | (test_bit(LED_MISC, dev->led) ? 0x10 : 0)
568 | (test_bit(LED_MUTE, dev->led) ? 0x20 : 0);
569 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS))
570 return -1;
571 }
572
573 return 0;
574 }
575
576 /*
577 * atkbd_event_work() is used to complete processing of events that
578 * can not be processed by input_event() which is often called from
579 * interrupt context.
580 */
581
582 static void atkbd_event_work(struct work_struct *work)
583 {
584 struct atkbd *atkbd = container_of(work, struct atkbd, event_work.work);
585
586 mutex_lock(&atkbd->mutex);
587
588 if (!atkbd->enabled) {
589 /*
590 * Serio ports are resumed asynchronously so while driver core
591 * thinks that device is already fully operational in reality
592 * it may not be ready yet. In this case we need to keep
593 * rescheduling till reconnect completes.
594 */
595 schedule_delayed_work(&atkbd->event_work,
596 msecs_to_jiffies(100));
597 } else {
598 if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask))
599 atkbd_set_leds(atkbd);
600
601 if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask))
602 atkbd_set_repeat_rate(atkbd);
603 }
604
605 mutex_unlock(&atkbd->mutex);
606 }
607
608 /*
609 * Schedule switch for execution. We need to throttle requests,
610 * otherwise keyboard may become unresponsive.
611 */
612 static void atkbd_schedule_event_work(struct atkbd *atkbd, int event_bit)
613 {
614 unsigned long delay = msecs_to_jiffies(50);
615
616 if (time_after(jiffies, atkbd->event_jiffies + delay))
617 delay = 0;
618
619 atkbd->event_jiffies = jiffies;
620 set_bit(event_bit, &atkbd->event_mask);
621 mb();
622 schedule_delayed_work(&atkbd->event_work, delay);
623 }
624
625 /*
626 * Event callback from the input module. Events that change the state of
627 * the hardware are processed here. If action can not be performed in
628 * interrupt context it is offloaded to atkbd_event_work.
629 */
630
631 static int atkbd_event(struct input_dev *dev,
632 unsigned int type, unsigned int code, int value)
633 {
634 struct atkbd *atkbd = input_get_drvdata(dev);
635
636 if (!atkbd->write)
637 return -1;
638
639 switch (type) {
640
641 case EV_LED:
642 atkbd_schedule_event_work(atkbd, ATKBD_LED_EVENT_BIT);
643 return 0;
644
645 case EV_REP:
646 if (!atkbd->softrepeat)
647 atkbd_schedule_event_work(atkbd, ATKBD_REP_EVENT_BIT);
648 return 0;
649
650 default:
651 return -1;
652 }
653 }
654
655 /*
656 * atkbd_enable() signals that interrupt handler is allowed to
657 * generate input events.
658 */
659
660 static inline void atkbd_enable(struct atkbd *atkbd)
661 {
662 serio_pause_rx(atkbd->ps2dev.serio);
663 atkbd->enabled = true;
664 serio_continue_rx(atkbd->ps2dev.serio);
665 }
666
667 /*
668 * atkbd_disable() tells input handler that all incoming data except
669 * for ACKs and command response should be dropped.
670 */
671
672 static inline void atkbd_disable(struct atkbd *atkbd)
673 {
674 serio_pause_rx(atkbd->ps2dev.serio);
675 atkbd->enabled = false;
676 serio_continue_rx(atkbd->ps2dev.serio);
677 }
678
679 /*
680 * atkbd_probe() probes for an AT keyboard on a serio port.
681 */
682
683 static int atkbd_probe(struct atkbd *atkbd)
684 {
685 struct ps2dev *ps2dev = &atkbd->ps2dev;
686 unsigned char param[2];
687
688 /*
689 * Some systems, where the bit-twiddling when testing the io-lines of the
690 * controller may confuse the keyboard need a full reset of the keyboard. On
691 * these systems the BIOS also usually doesn't do it for us.
692 */
693
694 if (atkbd_reset)
695 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT))
696 dev_warn(&ps2dev->serio->dev,
697 "keyboard reset failed on %s\n",
698 ps2dev->serio->phys);
699
700 /*
701 * Then we check the keyboard ID. We should get 0xab83 under normal conditions.
702 * Some keyboards report different values, but the first byte is always 0xab or
703 * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this
704 * should make sure we don't try to set the LEDs on it.
705 */
706
707 param[0] = param[1] = 0xa5; /* initialize with invalid values */
708 if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) {
709
710 /*
711 * If the get ID command failed, we check if we can at least set the LEDs on
712 * the keyboard. This should work on every keyboard out there. It also turns
713 * the LEDs off, which we want anyway.
714 */
715 param[0] = 0;
716 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
717 return -1;
718 atkbd->id = 0xabba;
719 return 0;
720 }
721
722 if (!ps2_is_keyboard_id(param[0]))
723 return -1;
724
725 atkbd->id = (param[0] << 8) | param[1];
726
727 if (atkbd->id == 0xaca1 && atkbd->translated) {
728 dev_err(&ps2dev->serio->dev,
729 "NCD terminal keyboards are only supported on non-translating controlelrs. "
730 "Use i8042.direct=1 to disable translation.\n");
731 return -1;
732 }
733
734 return 0;
735 }
736
737 /*
738 * atkbd_select_set checks if a keyboard has a working Set 3 support, and
739 * sets it into that. Unfortunately there are keyboards that can be switched
740 * to Set 3, but don't work well in that (BTC Multimedia ...)
741 */
742
743 static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra)
744 {
745 struct ps2dev *ps2dev = &atkbd->ps2dev;
746 unsigned char param[2];
747
748 atkbd->extra = false;
749 /*
750 * For known special keyboards we can go ahead and set the correct set.
751 * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and
752 * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards.
753 */
754
755 if (atkbd->translated)
756 return 2;
757
758 if (atkbd->id == 0xaca1) {
759 param[0] = 3;
760 ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET);
761 return 3;
762 }
763
764 if (allow_extra) {
765 param[0] = 0x71;
766 if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) {
767 atkbd->extra = true;
768 return 2;
769 }
770 }
771
772 if (atkbd_terminal) {
773 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MB);
774 return 3;
775 }
776
777 if (target_set != 3)
778 return 2;
779
780 if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) {
781 atkbd->id = param[0] << 8 | param[1];
782 return 2;
783 }
784
785 param[0] = 3;
786 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
787 return 2;
788
789 param[0] = 0;
790 if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET))
791 return 2;
792
793 if (param[0] != 3) {
794 param[0] = 2;
795 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
796 return 2;
797 }
798
799 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR);
800
801 return 3;
802 }
803
804 static int atkbd_reset_state(struct atkbd *atkbd)
805 {
806 struct ps2dev *ps2dev = &atkbd->ps2dev;
807 unsigned char param[1];
808
809 /*
810 * Set the LEDs to a predefined state (all off).
811 */
812
813 param[0] = 0;
814 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
815 return -1;
816
817 /*
818 * Set autorepeat to fastest possible.
819 */
820
821 param[0] = 0;
822 if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP))
823 return -1;
824
825 return 0;
826 }
827
828 static int atkbd_activate(struct atkbd *atkbd)
829 {
830 struct ps2dev *ps2dev = &atkbd->ps2dev;
831
832 /*
833 * Enable the keyboard to receive keystrokes.
834 */
835
836 if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) {
837 dev_err(&ps2dev->serio->dev,
838 "Failed to enable keyboard on %s\n",
839 ps2dev->serio->phys);
840 return -1;
841 }
842
843 return 0;
844 }
845
846 /*
847 * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a
848 * reboot.
849 */
850
851 static void atkbd_cleanup(struct serio *serio)
852 {
853 struct atkbd *atkbd = serio_get_drvdata(serio);
854
855 atkbd_disable(atkbd);
856 ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_DEF);
857 }
858
859
860 /*
861 * atkbd_disconnect() closes and frees.
862 */
863
864 static void atkbd_disconnect(struct serio *serio)
865 {
866 struct atkbd *atkbd = serio_get_drvdata(serio);
867
868 sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
869
870 atkbd_disable(atkbd);
871
872 input_unregister_device(atkbd->dev);
873
874 /*
875 * Make sure we don't have a command in flight.
876 * Note that since atkbd->enabled is false event work will keep
877 * rescheduling itself until it gets canceled and will not try
878 * accessing freed input device or serio port.
879 */
880 cancel_delayed_work_sync(&atkbd->event_work);
881
882 serio_close(serio);
883 serio_set_drvdata(serio, NULL);
884 kfree(atkbd);
885 }
886
887 /*
888 * generate release events for the keycodes given in data
889 */
890 static void atkbd_apply_forced_release_keylist(struct atkbd* atkbd,
891 const void *data)
892 {
893 const unsigned int *keys = data;
894 unsigned int i;
895
896 if (atkbd->set == 2)
897 for (i = 0; keys[i] != -1U; i++)
898 __set_bit(keys[i], atkbd->force_release_mask);
899 }
900
901 /*
902 * Most special keys (Fn+F?) on Dell laptops do not generate release
903 * events so we have to do it ourselves.
904 */
905 static unsigned int atkbd_dell_laptop_forced_release_keys[] = {
906 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8f, 0x93, -1U
907 };
908
909 /*
910 * Perform fixup for HP system that doesn't generate release
911 * for its video switch
912 */
913 static unsigned int atkbd_hp_forced_release_keys[] = {
914 0x94, -1U
915 };
916
917 /*
918 * Samsung NC10,NC20 with Fn+F? key release not working
919 */
920 static unsigned int atkbd_samsung_forced_release_keys[] = {
921 0x82, 0x83, 0x84, 0x86, 0x88, 0x89, 0xb3, 0xf7, 0xf9, -1U
922 };
923
924 /*
925 * Amilo Pi 3525 key release for Fn+Volume keys not working
926 */
927 static unsigned int atkbd_amilo_pi3525_forced_release_keys[] = {
928 0x20, 0xa0, 0x2e, 0xae, 0x30, 0xb0, -1U
929 };
930
931 /*
932 * Amilo Xi 3650 key release for light touch bar not working
933 */
934 static unsigned int atkbd_amilo_xi3650_forced_release_keys[] = {
935 0x67, 0xed, 0x90, 0xa2, 0x99, 0xa4, 0xae, 0xb0, -1U
936 };
937
938 /*
939 * Soltech TA12 system with broken key release on volume keys and mute key
940 */
941 static unsigned int atkdb_soltech_ta12_forced_release_keys[] = {
942 0xa0, 0xae, 0xb0, -1U
943 };
944
945 /*
946 * Many notebooks don't send key release event for volume up/down
947 * keys, with key list below common among them
948 */
949 static unsigned int atkbd_volume_forced_release_keys[] = {
950 0xae, 0xb0, -1U
951 };
952
953 /*
954 * OQO 01+ multimedia keys (64--66) generate e0 6x upon release whereas
955 * they should be generating e4-e6 (0x80 | code).
956 */
957 static unsigned int atkbd_oqo_01plus_scancode_fixup(struct atkbd *atkbd,
958 unsigned int code)
959 {
960 if (atkbd->translated && atkbd->emul == 1 &&
961 (code == 0x64 || code == 0x65 || code == 0x66)) {
962 atkbd->emul = 0;
963 code |= 0x80;
964 }
965
966 return code;
967 }
968
969 /*
970 * atkbd_set_keycode_table() initializes keyboard's keycode table
971 * according to the selected scancode set
972 */
973
974 static void atkbd_set_keycode_table(struct atkbd *atkbd)
975 {
976 unsigned int scancode;
977 int i, j;
978
979 memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
980 bitmap_zero(atkbd->force_release_mask, ATKBD_KEYMAP_SIZE);
981
982 if (atkbd->translated) {
983 for (i = 0; i < 128; i++) {
984 scancode = atkbd_unxlate_table[i];
985 atkbd->keycode[i] = atkbd_set2_keycode[scancode];
986 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80];
987 if (atkbd->scroll)
988 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
989 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2)
990 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
991 }
992 } else if (atkbd->set == 3) {
993 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
994 } else {
995 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
996
997 if (atkbd->scroll)
998 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) {
999 scancode = atkbd_scroll_keys[i].set2;
1000 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode;
1001 }
1002 }
1003
1004 /*
1005 * HANGEUL and HANJA keys do not send release events so we need to
1006 * generate such events ourselves
1007 */
1008 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL);
1009 atkbd->keycode[scancode] = KEY_HANGEUL;
1010 __set_bit(scancode, atkbd->force_release_mask);
1011
1012 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA);
1013 atkbd->keycode[scancode] = KEY_HANJA;
1014 __set_bit(scancode, atkbd->force_release_mask);
1015
1016 /*
1017 * Perform additional fixups
1018 */
1019 if (atkbd_platform_fixup)
1020 atkbd_platform_fixup(atkbd, atkbd_platform_fixup_data);
1021 }
1022
1023 /*
1024 * atkbd_set_device_attrs() sets up keyboard's input device structure
1025 */
1026
1027 static void atkbd_set_device_attrs(struct atkbd *atkbd)
1028 {
1029 struct input_dev *input_dev = atkbd->dev;
1030 int i;
1031
1032 if (atkbd->extra)
1033 snprintf(atkbd->name, sizeof(atkbd->name),
1034 "AT Set 2 Extra keyboard");
1035 else
1036 snprintf(atkbd->name, sizeof(atkbd->name),
1037 "AT %s Set %d keyboard",
1038 atkbd->translated ? "Translated" : "Raw", atkbd->set);
1039
1040 snprintf(atkbd->phys, sizeof(atkbd->phys),
1041 "%s/input0", atkbd->ps2dev.serio->phys);
1042
1043 input_dev->name = atkbd->name;
1044 input_dev->phys = atkbd->phys;
1045 input_dev->id.bustype = BUS_I8042;
1046 input_dev->id.vendor = 0x0001;
1047 input_dev->id.product = atkbd->translated ? 1 : atkbd->set;
1048 input_dev->id.version = atkbd->id;
1049 input_dev->event = atkbd_event;
1050 input_dev->dev.parent = &atkbd->ps2dev.serio->dev;
1051
1052 input_set_drvdata(input_dev, atkbd);
1053
1054 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
1055 BIT_MASK(EV_MSC);
1056
1057 if (atkbd->write) {
1058 input_dev->evbit[0] |= BIT_MASK(EV_LED);
1059 input_dev->ledbit[0] = BIT_MASK(LED_NUML) |
1060 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL);
1061 }
1062
1063 if (atkbd->extra)
1064 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) |
1065 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) |
1066 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC);
1067
1068 if (!atkbd->softrepeat) {
1069 input_dev->rep[REP_DELAY] = 250;
1070 input_dev->rep[REP_PERIOD] = 33;
1071 }
1072
1073 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) :
1074 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN);
1075
1076 if (atkbd->scroll) {
1077 input_dev->evbit[0] |= BIT_MASK(EV_REL);
1078 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) |
1079 BIT_MASK(REL_HWHEEL);
1080 __set_bit(BTN_MIDDLE, input_dev->keybit);
1081 }
1082
1083 input_dev->keycode = atkbd->keycode;
1084 input_dev->keycodesize = sizeof(unsigned short);
1085 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
1086
1087 for (i = 0; i < ATKBD_KEYMAP_SIZE; i++) {
1088 if (atkbd->keycode[i] != KEY_RESERVED &&
1089 atkbd->keycode[i] != ATKBD_KEY_NULL &&
1090 atkbd->keycode[i] < ATKBD_SPECIAL) {
1091 __set_bit(atkbd->keycode[i], input_dev->keybit);
1092 }
1093 }
1094 }
1095
1096 /*
1097 * atkbd_connect() is called when the serio module finds an interface
1098 * that isn't handled yet by an appropriate device driver. We check if
1099 * there is an AT keyboard out there and if yes, we register ourselves
1100 * to the input module.
1101 */
1102
1103 static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
1104 {
1105 struct atkbd *atkbd;
1106 struct input_dev *dev;
1107 int err = -ENOMEM;
1108
1109 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL);
1110 dev = input_allocate_device();
1111 if (!atkbd || !dev)
1112 goto fail1;
1113
1114 atkbd->dev = dev;
1115 ps2_init(&atkbd->ps2dev, serio);
1116 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work);
1117 mutex_init(&atkbd->mutex);
1118
1119 switch (serio->id.type) {
1120
1121 case SERIO_8042_XL:
1122 atkbd->translated = true;
1123 /* Fall through */
1124
1125 case SERIO_8042:
1126 if (serio->write)
1127 atkbd->write = true;
1128 break;
1129 }
1130
1131 atkbd->softraw = atkbd_softraw;
1132 atkbd->softrepeat = atkbd_softrepeat;
1133 atkbd->scroll = atkbd_scroll;
1134
1135 if (atkbd->softrepeat)
1136 atkbd->softraw = true;
1137
1138 serio_set_drvdata(serio, atkbd);
1139
1140 err = serio_open(serio, drv);
1141 if (err)
1142 goto fail2;
1143
1144 if (atkbd->write) {
1145
1146 if (atkbd_probe(atkbd)) {
1147 err = -ENODEV;
1148 goto fail3;
1149 }
1150
1151 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
1152 atkbd_reset_state(atkbd);
1153 atkbd_activate(atkbd);
1154
1155 } else {
1156 atkbd->set = 2;
1157 atkbd->id = 0xab00;
1158 }
1159
1160 atkbd_set_keycode_table(atkbd);
1161 atkbd_set_device_attrs(atkbd);
1162
1163 err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group);
1164 if (err)
1165 goto fail3;
1166
1167 atkbd_enable(atkbd);
1168
1169 err = input_register_device(atkbd->dev);
1170 if (err)
1171 goto fail4;
1172
1173 return 0;
1174
1175 fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
1176 fail3: serio_close(serio);
1177 fail2: serio_set_drvdata(serio, NULL);
1178 fail1: input_free_device(dev);
1179 kfree(atkbd);
1180 return err;
1181 }
1182
1183 /*
1184 * atkbd_reconnect() tries to restore keyboard into a sane state and is
1185 * most likely called on resume.
1186 */
1187
1188 static int atkbd_reconnect(struct serio *serio)
1189 {
1190 struct atkbd *atkbd = serio_get_drvdata(serio);
1191 struct serio_driver *drv = serio->drv;
1192 int retval = -1;
1193
1194 if (!atkbd || !drv) {
1195 dev_dbg(&serio->dev,
1196 "reconnect request, but serio is disconnected, ignoring...\n");
1197 return -1;
1198 }
1199
1200 mutex_lock(&atkbd->mutex);
1201
1202 atkbd_disable(atkbd);
1203
1204 if (atkbd->write) {
1205 if (atkbd_probe(atkbd))
1206 goto out;
1207
1208 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
1209 goto out;
1210
1211 atkbd_activate(atkbd);
1212
1213 /*
1214 * Restore LED state and repeat rate. While input core
1215 * will do this for us at resume time reconnect may happen
1216 * because user requested it via sysfs or simply because
1217 * keyboard was unplugged and plugged in again so we need
1218 * to do it ourselves here.
1219 */
1220 atkbd_set_leds(atkbd);
1221 if (!atkbd->softrepeat)
1222 atkbd_set_repeat_rate(atkbd);
1223
1224 }
1225
1226 atkbd_enable(atkbd);
1227 retval = 0;
1228
1229 out:
1230 mutex_unlock(&atkbd->mutex);
1231 return retval;
1232 }
1233
1234 static struct serio_device_id atkbd_serio_ids[] = {
1235 {
1236 .type = SERIO_8042,
1237 .proto = SERIO_ANY,
1238 .id = SERIO_ANY,
1239 .extra = SERIO_ANY,
1240 },
1241 {
1242 .type = SERIO_8042_XL,
1243 .proto = SERIO_ANY,
1244 .id = SERIO_ANY,
1245 .extra = SERIO_ANY,
1246 },
1247 {
1248 .type = SERIO_RS232,
1249 .proto = SERIO_PS2SER,
1250 .id = SERIO_ANY,
1251 .extra = SERIO_ANY,
1252 },
1253 { 0 }
1254 };
1255
1256 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
1257
1258 static struct serio_driver atkbd_drv = {
1259 .driver = {
1260 .name = "atkbd",
1261 },
1262 .description = DRIVER_DESC,
1263 .id_table = atkbd_serio_ids,
1264 .interrupt = atkbd_interrupt,
1265 .connect = atkbd_connect,
1266 .reconnect = atkbd_reconnect,
1267 .disconnect = atkbd_disconnect,
1268 .cleanup = atkbd_cleanup,
1269 };
1270
1271 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
1272 ssize_t (*handler)(struct atkbd *, char *))
1273 {
1274 struct serio *serio = to_serio_port(dev);
1275 struct atkbd *atkbd = serio_get_drvdata(serio);
1276
1277 return handler(atkbd, buf);
1278 }
1279
1280 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
1281 ssize_t (*handler)(struct atkbd *, const char *, size_t))
1282 {
1283 struct serio *serio = to_serio_port(dev);
1284 struct atkbd *atkbd = serio_get_drvdata(serio);
1285 int retval;
1286
1287 retval = mutex_lock_interruptible(&atkbd->mutex);
1288 if (retval)
1289 return retval;
1290
1291 atkbd_disable(atkbd);
1292 retval = handler(atkbd, buf, count);
1293 atkbd_enable(atkbd);
1294
1295 mutex_unlock(&atkbd->mutex);
1296
1297 return retval;
1298 }
1299
1300 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
1301 {
1302 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
1303 }
1304
1305 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
1306 {
1307 struct input_dev *old_dev, *new_dev;
1308 unsigned long value;
1309 int err;
1310 bool old_extra;
1311 unsigned char old_set;
1312
1313 if (!atkbd->write)
1314 return -EIO;
1315
1316 if (strict_strtoul(buf, 10, &value) || value > 1)
1317 return -EINVAL;
1318
1319 if (atkbd->extra != value) {
1320 /*
1321 * Since device's properties will change we need to
1322 * unregister old device. But allocate and register
1323 * new one first to make sure we have it.
1324 */
1325 old_dev = atkbd->dev;
1326 old_extra = atkbd->extra;
1327 old_set = atkbd->set;
1328
1329 new_dev = input_allocate_device();
1330 if (!new_dev)
1331 return -ENOMEM;
1332
1333 atkbd->dev = new_dev;
1334 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
1335 atkbd_reset_state(atkbd);
1336 atkbd_activate(atkbd);
1337 atkbd_set_keycode_table(atkbd);
1338 atkbd_set_device_attrs(atkbd);
1339
1340 err = input_register_device(atkbd->dev);
1341 if (err) {
1342 input_free_device(new_dev);
1343
1344 atkbd->dev = old_dev;
1345 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1346 atkbd_set_keycode_table(atkbd);
1347 atkbd_set_device_attrs(atkbd);
1348
1349 return err;
1350 }
1351 input_unregister_device(old_dev);
1352
1353 }
1354 return count;
1355 }
1356
1357 static ssize_t atkbd_show_force_release(struct atkbd *atkbd, char *buf)
1358 {
1359 size_t len = bitmap_scnlistprintf(buf, PAGE_SIZE - 2,
1360 atkbd->force_release_mask, ATKBD_KEYMAP_SIZE);
1361
1362 buf[len++] = '\n';
1363 buf[len] = '\0';
1364
1365 return len;
1366 }
1367
1368 static ssize_t atkbd_set_force_release(struct atkbd *atkbd,
1369 const char *buf, size_t count)
1370 {
1371 /* 64 bytes on stack should be acceptable */
1372 DECLARE_BITMAP(new_mask, ATKBD_KEYMAP_SIZE);
1373 int err;
1374
1375 err = bitmap_parselist(buf, new_mask, ATKBD_KEYMAP_SIZE);
1376 if (err)
1377 return err;
1378
1379 memcpy(atkbd->force_release_mask, new_mask, sizeof(atkbd->force_release_mask));
1380 return count;
1381 }
1382
1383
1384 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
1385 {
1386 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
1387 }
1388
1389 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
1390 {
1391 struct input_dev *old_dev, *new_dev;
1392 unsigned long value;
1393 int err;
1394 bool old_scroll;
1395
1396 if (strict_strtoul(buf, 10, &value) || value > 1)
1397 return -EINVAL;
1398
1399 if (atkbd->scroll != value) {
1400 old_dev = atkbd->dev;
1401 old_scroll = atkbd->scroll;
1402
1403 new_dev = input_allocate_device();
1404 if (!new_dev)
1405 return -ENOMEM;
1406
1407 atkbd->dev = new_dev;
1408 atkbd->scroll = value;
1409 atkbd_set_keycode_table(atkbd);
1410 atkbd_set_device_attrs(atkbd);
1411
1412 err = input_register_device(atkbd->dev);
1413 if (err) {
1414 input_free_device(new_dev);
1415
1416 atkbd->scroll = old_scroll;
1417 atkbd->dev = old_dev;
1418 atkbd_set_keycode_table(atkbd);
1419 atkbd_set_device_attrs(atkbd);
1420
1421 return err;
1422 }
1423 input_unregister_device(old_dev);
1424 }
1425 return count;
1426 }
1427
1428 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
1429 {
1430 return sprintf(buf, "%d\n", atkbd->set);
1431 }
1432
1433 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
1434 {
1435 struct input_dev *old_dev, *new_dev;
1436 unsigned long value;
1437 int err;
1438 unsigned char old_set;
1439 bool old_extra;
1440
1441 if (!atkbd->write)
1442 return -EIO;
1443
1444 if (strict_strtoul(buf, 10, &value) || (value != 2 && value != 3))
1445 return -EINVAL;
1446
1447 if (atkbd->set != value) {
1448 old_dev = atkbd->dev;
1449 old_extra = atkbd->extra;
1450 old_set = atkbd->set;
1451
1452 new_dev = input_allocate_device();
1453 if (!new_dev)
1454 return -ENOMEM;
1455
1456 atkbd->dev = new_dev;
1457 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra);
1458 atkbd_reset_state(atkbd);
1459 atkbd_activate(atkbd);
1460 atkbd_set_keycode_table(atkbd);
1461 atkbd_set_device_attrs(atkbd);
1462
1463 err = input_register_device(atkbd->dev);
1464 if (err) {
1465 input_free_device(new_dev);
1466
1467 atkbd->dev = old_dev;
1468 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1469 atkbd_set_keycode_table(atkbd);
1470 atkbd_set_device_attrs(atkbd);
1471
1472 return err;
1473 }
1474 input_unregister_device(old_dev);
1475 }
1476 return count;
1477 }
1478
1479 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
1480 {
1481 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
1482 }
1483
1484 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
1485 {
1486 struct input_dev *old_dev, *new_dev;
1487 unsigned long value;
1488 int err;
1489 bool old_softrepeat, old_softraw;
1490
1491 if (!atkbd->write)
1492 return -EIO;
1493
1494 if (strict_strtoul(buf, 10, &value) || value > 1)
1495 return -EINVAL;
1496
1497 if (atkbd->softrepeat != value) {
1498 old_dev = atkbd->dev;
1499 old_softrepeat = atkbd->softrepeat;
1500 old_softraw = atkbd->softraw;
1501
1502 new_dev = input_allocate_device();
1503 if (!new_dev)
1504 return -ENOMEM;
1505
1506 atkbd->dev = new_dev;
1507 atkbd->softrepeat = value;
1508 if (atkbd->softrepeat)
1509 atkbd->softraw = true;
1510 atkbd_set_device_attrs(atkbd);
1511
1512 err = input_register_device(atkbd->dev);
1513 if (err) {
1514 input_free_device(new_dev);
1515
1516 atkbd->dev = old_dev;
1517 atkbd->softrepeat = old_softrepeat;
1518 atkbd->softraw = old_softraw;
1519 atkbd_set_device_attrs(atkbd);
1520
1521 return err;
1522 }
1523 input_unregister_device(old_dev);
1524 }
1525 return count;
1526 }
1527
1528
1529 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
1530 {
1531 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
1532 }
1533
1534 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
1535 {
1536 struct input_dev *old_dev, *new_dev;
1537 unsigned long value;
1538 int err;
1539 bool old_softraw;
1540
1541 if (strict_strtoul(buf, 10, &value) || value > 1)
1542 return -EINVAL;
1543
1544 if (atkbd->softraw != value) {
1545 old_dev = atkbd->dev;
1546 old_softraw = atkbd->softraw;
1547
1548 new_dev = input_allocate_device();
1549 if (!new_dev)
1550 return -ENOMEM;
1551
1552 atkbd->dev = new_dev;
1553 atkbd->softraw = value;
1554 atkbd_set_device_attrs(atkbd);
1555
1556 err = input_register_device(atkbd->dev);
1557 if (err) {
1558 input_free_device(new_dev);
1559
1560 atkbd->dev = old_dev;
1561 atkbd->softraw = old_softraw;
1562 atkbd_set_device_attrs(atkbd);
1563
1564 return err;
1565 }
1566 input_unregister_device(old_dev);
1567 }
1568 return count;
1569 }
1570
1571 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
1572 {
1573 return sprintf(buf, "%lu\n", atkbd->err_count);
1574 }
1575
1576 static int __init atkbd_setup_forced_release(const struct dmi_system_id *id)
1577 {
1578 atkbd_platform_fixup = atkbd_apply_forced_release_keylist;
1579 atkbd_platform_fixup_data = id->driver_data;
1580
1581 return 1;
1582 }
1583
1584 static int __init atkbd_setup_scancode_fixup(const struct dmi_system_id *id)
1585 {
1586 atkbd_platform_scancode_fixup = id->driver_data;
1587
1588 return 1;
1589 }
1590
1591 static const struct dmi_system_id atkbd_dmi_quirk_table[] __initconst = {
1592 {
1593 .matches = {
1594 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
1595 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1596 },
1597 .callback = atkbd_setup_forced_release,
1598 .driver_data = atkbd_dell_laptop_forced_release_keys,
1599 },
1600 {
1601 .matches = {
1602 DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
1603 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1604 },
1605 .callback = atkbd_setup_forced_release,
1606 .driver_data = atkbd_dell_laptop_forced_release_keys,
1607 },
1608 {
1609 .matches = {
1610 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1611 DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"),
1612 },
1613 .callback = atkbd_setup_forced_release,
1614 .driver_data = atkbd_hp_forced_release_keys,
1615 },
1616 {
1617 .matches = {
1618 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1619 DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion ZV6100"),
1620 },
1621 .callback = atkbd_setup_forced_release,
1622 .driver_data = atkbd_volume_forced_release_keys,
1623 },
1624 {
1625 .matches = {
1626 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1627 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4000"),
1628 },
1629 .callback = atkbd_setup_forced_release,
1630 .driver_data = atkbd_volume_forced_release_keys,
1631 },
1632 {
1633 .matches = {
1634 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1635 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4100"),
1636 },
1637 .callback = atkbd_setup_forced_release,
1638 .driver_data = atkbd_volume_forced_release_keys,
1639 },
1640 {
1641 .matches = {
1642 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1643 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4200"),
1644 },
1645 .callback = atkbd_setup_forced_release,
1646 .driver_data = atkbd_volume_forced_release_keys,
1647 },
1648 {
1649 /* Inventec Symphony */
1650 .matches = {
1651 DMI_MATCH(DMI_SYS_VENDOR, "INVENTEC"),
1652 DMI_MATCH(DMI_PRODUCT_NAME, "SYMPHONY 6.0/7.0"),
1653 },
1654 .callback = atkbd_setup_forced_release,
1655 .driver_data = atkbd_volume_forced_release_keys,
1656 },
1657 {
1658 /* Samsung NC10 */
1659 .matches = {
1660 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1661 DMI_MATCH(DMI_PRODUCT_NAME, "NC10"),
1662 },
1663 .callback = atkbd_setup_forced_release,
1664 .driver_data = atkbd_samsung_forced_release_keys,
1665 },
1666 {
1667 /* Samsung NC20 */
1668 .matches = {
1669 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1670 DMI_MATCH(DMI_PRODUCT_NAME, "NC20"),
1671 },
1672 .callback = atkbd_setup_forced_release,
1673 .driver_data = atkbd_samsung_forced_release_keys,
1674 },
1675 {
1676 /* Samsung SQ45S70S */
1677 .matches = {
1678 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1679 DMI_MATCH(DMI_PRODUCT_NAME, "SQ45S70S"),
1680 },
1681 .callback = atkbd_setup_forced_release,
1682 .driver_data = atkbd_samsung_forced_release_keys,
1683 },
1684 {
1685 /* Fujitsu Amilo PA 1510 */
1686 .matches = {
1687 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1688 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 1510"),
1689 },
1690 .callback = atkbd_setup_forced_release,
1691 .driver_data = atkbd_volume_forced_release_keys,
1692 },
1693 {
1694 /* Fujitsu Amilo Pi 3525 */
1695 .matches = {
1696 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1697 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 3525"),
1698 },
1699 .callback = atkbd_setup_forced_release,
1700 .driver_data = atkbd_amilo_pi3525_forced_release_keys,
1701 },
1702 {
1703 /* Fujitsu Amilo Xi 3650 */
1704 .matches = {
1705 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1706 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 3650"),
1707 },
1708 .callback = atkbd_setup_forced_release,
1709 .driver_data = atkbd_amilo_xi3650_forced_release_keys,
1710 },
1711 {
1712 .matches = {
1713 DMI_MATCH(DMI_SYS_VENDOR, "Soltech Corporation"),
1714 DMI_MATCH(DMI_PRODUCT_NAME, "TA12"),
1715 },
1716 .callback = atkbd_setup_forced_release,
1717 .driver_data = atkdb_soltech_ta12_forced_release_keys,
1718 },
1719 {
1720 /* OQO Model 01+ */
1721 .matches = {
1722 DMI_MATCH(DMI_SYS_VENDOR, "OQO"),
1723 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPTO"),
1724 },
1725 .callback = atkbd_setup_scancode_fixup,
1726 .driver_data = atkbd_oqo_01plus_scancode_fixup,
1727 },
1728 { }
1729 };
1730
1731 static int __init atkbd_init(void)
1732 {
1733 dmi_check_system(atkbd_dmi_quirk_table);
1734
1735 return serio_register_driver(&atkbd_drv);
1736 }
1737
1738 static void __exit atkbd_exit(void)
1739 {
1740 serio_unregister_driver(&atkbd_drv);
1741 }
1742
1743 module_init(atkbd_init);
1744 module_exit(atkbd_exit);