?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
treewide: remove redundant IS_ERR() before error code check
[linux/fpc-iii.git] / drivers / input / keyboard / atkbd.c
blob7e3eae54c1926ea882ec9cf23652a759af24a775
1 // SPDX-License-Identifier: GPL-2.0-only
2 /*
3 * AT and PS/2 keyboard driver
4 *
5 * Copyright (c) 1999-2002 Vojtech Pavlik
6 */
7
8
9 /*
10 * This driver can handle standard AT keyboards and PS/2 keyboards in
11 * Translated and Raw Set 2 and Set 3, as well as AT keyboards on dumb
12 * input-only controllers and AT keyboards connected over a one way RS232
13 * converter.
14 */
15
16 #include <linux/delay.h>
17 #include <linux/module.h>
18 #include <linux/slab.h>
19 #include <linux/interrupt.h>
20 #include <linux/init.h>
21 #include <linux/input.h>
22 #include <linux/serio.h>
23 #include <linux/workqueue.h>
24 #include <linux/libps2.h>
25 #include <linux/mutex.h>
26 #include <linux/dmi.h>
27
28 #define DRIVER_DESC "AT and PS/2 keyboard driver"
29
30 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
31 MODULE_DESCRIPTION(DRIVER_DESC);
32 MODULE_LICENSE("GPL");
33
34 static int atkbd_set = 2;
35 module_param_named(set, atkbd_set, int, 0);
36 MODULE_PARM_DESC(set, "Select keyboard code set (2 = default, 3 = PS/2 native)");
37
38 #if defined(__i386__) || defined(__x86_64__) || defined(__hppa__)
39 static bool atkbd_reset;
40 #else
41 static bool atkbd_reset = true;
42 #endif
43 module_param_named(reset, atkbd_reset, bool, 0);
44 MODULE_PARM_DESC(reset, "Reset keyboard during initialization");
45
46 static bool atkbd_softrepeat;
47 module_param_named(softrepeat, atkbd_softrepeat, bool, 0);
48 MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat");
49
50 static bool atkbd_softraw = true;
51 module_param_named(softraw, atkbd_softraw, bool, 0);
52 MODULE_PARM_DESC(softraw, "Use software generated rawmode");
53
54 static bool atkbd_scroll;
55 module_param_named(scroll, atkbd_scroll, bool, 0);
56 MODULE_PARM_DESC(scroll, "Enable scroll-wheel on MS Office and similar keyboards");
57
58 static bool atkbd_extra;
59 module_param_named(extra, atkbd_extra, bool, 0);
60 MODULE_PARM_DESC(extra, "Enable extra LEDs and keys on IBM RapidAcces, EzKey and similar keyboards");
61
62 static bool atkbd_terminal;
63 module_param_named(terminal, atkbd_terminal, bool, 0);
64 MODULE_PARM_DESC(terminal, "Enable break codes on an IBM Terminal keyboard connected via AT/PS2");
65
66 /*
67 * Scancode to keycode tables. These are just the default setting, and
68 * are loadable via a userland utility.
69 */
70
71 #define ATKBD_KEYMAP_SIZE 512
72
73 static const unsigned short atkbd_set2_keycode[ATKBD_KEYMAP_SIZE] = {
74
75 #ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES
76
77 /* XXX: need a more general approach */
78
79 #include "hpps2atkbd.h" /* include the keyboard scancodes */
80
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,
90
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,
99
100 0, 0, 0, 65, 99,
101 #endif
102 };
103
104 static const unsigned short atkbd_set3_keycode[ATKBD_KEYMAP_SIZE] = {
105
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,
114
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
118 };
119
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
129 };
130
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_MB 0x00f8 /* Set all keys to give break codes */
140 #define ATKBD_CMD_SETALL_MBR 0x00fa /* ... and repeat */
141 #define ATKBD_CMD_RESET_BAT 0x02ff
142 #define ATKBD_CMD_RESEND 0x00fe
143 #define ATKBD_CMD_EX_ENABLE 0x10ea
144 #define ATKBD_CMD_EX_SETLEDS 0x20eb
145 #define ATKBD_CMD_OK_GETID 0x02e8
146
147 #define ATKBD_RET_ACK 0xfa
148 #define ATKBD_RET_NAK 0xfe
149 #define ATKBD_RET_BAT 0xaa
150 #define ATKBD_RET_EMUL0 0xe0
151 #define ATKBD_RET_EMUL1 0xe1
152 #define ATKBD_RET_RELEASE 0xf0
153 #define ATKBD_RET_HANJA 0xf1
154 #define ATKBD_RET_HANGEUL 0xf2
155 #define ATKBD_RET_ERR 0xff
156
157 #define ATKBD_KEY_UNKNOWN 0
158 #define ATKBD_KEY_NULL 255
159
160 #define ATKBD_SCR_1 0xfffe
161 #define ATKBD_SCR_2 0xfffd
162 #define ATKBD_SCR_4 0xfffc
163 #define ATKBD_SCR_8 0xfffb
164 #define ATKBD_SCR_CLICK 0xfffa
165 #define ATKBD_SCR_LEFT 0xfff9
166 #define ATKBD_SCR_RIGHT 0xfff8
167
168 #define ATKBD_SPECIAL ATKBD_SCR_RIGHT
169
170 #define ATKBD_LED_EVENT_BIT 0
171 #define ATKBD_REP_EVENT_BIT 1
172
173 #define ATKBD_XL_ERR 0x01
174 #define ATKBD_XL_BAT 0x02
175 #define ATKBD_XL_ACK 0x04
176 #define ATKBD_XL_NAK 0x08
177 #define ATKBD_XL_HANGEUL 0x10
178 #define ATKBD_XL_HANJA 0x20
179
180 static const struct {
181 unsigned short keycode;
182 unsigned char set2;
183 } atkbd_scroll_keys[] = {
184 { ATKBD_SCR_1, 0xc5 },
185 { ATKBD_SCR_2, 0x9d },
186 { ATKBD_SCR_4, 0xa4 },
187 { ATKBD_SCR_8, 0x9b },
188 { ATKBD_SCR_CLICK, 0xe0 },
189 { ATKBD_SCR_LEFT, 0xcb },
190 { ATKBD_SCR_RIGHT, 0xd2 },
191 };
192
193 /*
194 * The atkbd control structure
195 */
196
197 struct atkbd {
198
199 struct ps2dev ps2dev;
200 struct input_dev *dev;
201
202 /* Written only during init */
203 char name[64];
204 char phys[32];
205
206 unsigned short id;
207 unsigned short keycode[ATKBD_KEYMAP_SIZE];
208 DECLARE_BITMAP(force_release_mask, ATKBD_KEYMAP_SIZE);
209 unsigned char set;
210 bool translated;
211 bool extra;
212 bool write;
213 bool softrepeat;
214 bool softraw;
215 bool scroll;
216 bool enabled;
217
218 /* Accessed only from interrupt */
219 unsigned char emul;
220 bool resend;
221 bool release;
222 unsigned long xl_bit;
223 unsigned int last;
224 unsigned long time;
225 unsigned long err_count;
226
227 struct delayed_work event_work;
228 unsigned long event_jiffies;
229 unsigned long event_mask;
230
231 /* Serializes reconnect(), attr->set() and event work */
232 struct mutex mutex;
233 };
234
235 /*
236 * System-specific keymap fixup routine
237 */
238 static void (*atkbd_platform_fixup)(struct atkbd *, const void *data);
239 static void *atkbd_platform_fixup_data;
240 static unsigned int (*atkbd_platform_scancode_fixup)(struct atkbd *, unsigned int);
241
242 /*
243 * Certain keyboards to not like ATKBD_CMD_RESET_DIS and stop responding
244 * to many commands until full reset (ATKBD_CMD_RESET_BAT) is performed.
245 */
246 static bool atkbd_skip_deactivate;
247
248 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
249 ssize_t (*handler)(struct atkbd *, char *));
250 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
251 ssize_t (*handler)(struct atkbd *, const char *, size_t));
252 #define ATKBD_DEFINE_ATTR(_name) \
253 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
254 static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \
255 static ssize_t atkbd_do_show_##_name(struct device *d, \
256 struct device_attribute *attr, char *b) \
257 { \
258 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
259 } \
260 static ssize_t atkbd_do_set_##_name(struct device *d, \
261 struct device_attribute *attr, const char *b, size_t s) \
262 { \
263 return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name); \
264 } \
265 static struct device_attribute atkbd_attr_##_name = \
266 __ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name);
267
268 ATKBD_DEFINE_ATTR(extra);
269 ATKBD_DEFINE_ATTR(force_release);
270 ATKBD_DEFINE_ATTR(scroll);
271 ATKBD_DEFINE_ATTR(set);
272 ATKBD_DEFINE_ATTR(softrepeat);
273 ATKBD_DEFINE_ATTR(softraw);
274
275 #define ATKBD_DEFINE_RO_ATTR(_name) \
276 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
277 static ssize_t atkbd_do_show_##_name(struct device *d, \
278 struct device_attribute *attr, char *b) \
279 { \
280 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
281 } \
282 static struct device_attribute atkbd_attr_##_name = \
283 __ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL);
284
285 ATKBD_DEFINE_RO_ATTR(err_count);
286
287 static struct attribute *atkbd_attributes[] = {
288 &atkbd_attr_extra.attr,
289 &atkbd_attr_force_release.attr,
290 &atkbd_attr_scroll.attr,
291 &atkbd_attr_set.attr,
292 &atkbd_attr_softrepeat.attr,
293 &atkbd_attr_softraw.attr,
294 &atkbd_attr_err_count.attr,
295 NULL
296 };
297
298 static struct attribute_group atkbd_attribute_group = {
299 .attrs = atkbd_attributes,
300 };
301
302 static const unsigned int xl_table[] = {
303 ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK,
304 ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL,
305 };
306
307 /*
308 * Checks if we should mangle the scancode to extract 'release' bit
309 * in translated mode.
310 */
311 static bool atkbd_need_xlate(unsigned long xl_bit, unsigned char code)
312 {
313 int i;
314
315 if (code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1)
316 return false;
317
318 for (i = 0; i < ARRAY_SIZE(xl_table); i++)
319 if (code == xl_table[i])
320 return test_bit(i, &xl_bit);
321
322 return true;
323 }
324
325 /*
326 * Calculates new value of xl_bit so the driver can distinguish
327 * between make/break pair of scancodes for select keys and PS/2
328 * protocol responses.
329 */
330 static void atkbd_calculate_xl_bit(struct atkbd *atkbd, unsigned char code)
331 {
332 int i;
333
334 for (i = 0; i < ARRAY_SIZE(xl_table); i++) {
335 if (!((code ^ xl_table[i]) & 0x7f)) {
336 if (code & 0x80)
337 __clear_bit(i, &atkbd->xl_bit);
338 else
339 __set_bit(i, &atkbd->xl_bit);
340 break;
341 }
342 }
343 }
344
345 /*
346 * Encode the scancode, 0xe0 prefix, and high bit into a single integer,
347 * keeping kernel 2.4 compatibility for set 2
348 */
349 static unsigned int atkbd_compat_scancode(struct atkbd *atkbd, unsigned int code)
350 {
351 if (atkbd->set == 3) {
352 if (atkbd->emul == 1)
353 code |= 0x100;
354 } else {
355 code = (code & 0x7f) | ((code & 0x80) << 1);
356 if (atkbd->emul == 1)
357 code |= 0x80;
358 }
359
360 return code;
361 }
362
363 /*
364 * atkbd_interrupt(). Here takes place processing of data received from
365 * the keyboard into events.
366 */
367
368 static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data,
369 unsigned int flags)
370 {
371 struct atkbd *atkbd = serio_get_drvdata(serio);
372 struct input_dev *dev = atkbd->dev;
373 unsigned int code = data;
374 int scroll = 0, hscroll = 0, click = -1;
375 int value;
376 unsigned short keycode;
377
378 dev_dbg(&serio->dev, "Received %02x flags %02x\n", data, flags);
379
380 #if !defined(__i386__) && !defined (__x86_64__)
381 if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) {
382 dev_warn(&serio->dev, "Frame/parity error: %02x\n", flags);
383 serio_write(serio, ATKBD_CMD_RESEND);
384 atkbd->resend = true;
385 goto out;
386 }
387
388 if (!flags && data == ATKBD_RET_ACK)
389 atkbd->resend = false;
390 #endif
391
392 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_ACK))
393 if (ps2_handle_ack(&atkbd->ps2dev, data))
394 goto out;
395
396 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_CMD))
397 if (ps2_handle_response(&atkbd->ps2dev, data))
398 goto out;
399
400 pm_wakeup_event(&serio->dev, 0);
401
402 if (!atkbd->enabled)
403 goto out;
404
405 input_event(dev, EV_MSC, MSC_RAW, code);
406
407 if (atkbd_platform_scancode_fixup)
408 code = atkbd_platform_scancode_fixup(atkbd, code);
409
410 if (atkbd->translated) {
411
412 if (atkbd->emul || atkbd_need_xlate(atkbd->xl_bit, code)) {
413 atkbd->release = code >> 7;
414 code &= 0x7f;
415 }
416
417 if (!atkbd->emul)
418 atkbd_calculate_xl_bit(atkbd, data);
419 }
420
421 switch (code) {
422 case ATKBD_RET_BAT:
423 atkbd->enabled = false;
424 serio_reconnect(atkbd->ps2dev.serio);
425 goto out;
426 case ATKBD_RET_EMUL0:
427 atkbd->emul = 1;
428 goto out;
429 case ATKBD_RET_EMUL1:
430 atkbd->emul = 2;
431 goto out;
432 case ATKBD_RET_RELEASE:
433 atkbd->release = true;
434 goto out;
435 case ATKBD_RET_ACK:
436 case ATKBD_RET_NAK:
437 if (printk_ratelimit())
438 dev_warn(&serio->dev,
439 "Spurious %s on %s. "
440 "Some program might be trying to access hardware directly.\n",
441 data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys);
442 goto out;
443 case ATKBD_RET_ERR:
444 atkbd->err_count++;
445 dev_dbg(&serio->dev, "Keyboard on %s reports too many keys pressed.\n",
446 serio->phys);
447 goto out;
448 }
449
450 code = atkbd_compat_scancode(atkbd, code);
451
452 if (atkbd->emul && --atkbd->emul)
453 goto out;
454
455 keycode = atkbd->keycode[code];
456
457 if (!(atkbd->release && test_bit(code, atkbd->force_release_mask)))
458 if (keycode != ATKBD_KEY_NULL)
459 input_event(dev, EV_MSC, MSC_SCAN, code);
460
461 switch (keycode) {
462 case ATKBD_KEY_NULL:
463 break;
464 case ATKBD_KEY_UNKNOWN:
465 dev_warn(&serio->dev,
466 "Unknown key %s (%s set %d, code %#x on %s).\n",
467 atkbd->release ? "released" : "pressed",
468 atkbd->translated ? "translated" : "raw",
469 atkbd->set, code, serio->phys);
470 dev_warn(&serio->dev,
471 "Use 'setkeycodes %s%02x <keycode>' to make it known.\n",
472 code & 0x80 ? "e0" : "", code & 0x7f);
473 input_sync(dev);
474 break;
475 case ATKBD_SCR_1:
476 scroll = 1;
477 break;
478 case ATKBD_SCR_2:
479 scroll = 2;
480 break;
481 case ATKBD_SCR_4:
482 scroll = 4;
483 break;
484 case ATKBD_SCR_8:
485 scroll = 8;
486 break;
487 case ATKBD_SCR_CLICK:
488 click = !atkbd->release;
489 break;
490 case ATKBD_SCR_LEFT:
491 hscroll = -1;
492 break;
493 case ATKBD_SCR_RIGHT:
494 hscroll = 1;
495 break;
496 default:
497 if (atkbd->release) {
498 value = 0;
499 atkbd->last = 0;
500 } else if (!atkbd->softrepeat && test_bit(keycode, dev->key)) {
501 /* Workaround Toshiba laptop multiple keypress */
502 value = time_before(jiffies, atkbd->time) && atkbd->last == code ? 1 : 2;
503 } else {
504 value = 1;
505 atkbd->last = code;
506 atkbd->time = jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]) / 2;
507 }
508
509 input_event(dev, EV_KEY, keycode, value);
510 input_sync(dev);
511
512 if (value && test_bit(code, atkbd->force_release_mask)) {
513 input_event(dev, EV_MSC, MSC_SCAN, code);
514 input_report_key(dev, keycode, 0);
515 input_sync(dev);
516 }
517 }
518
519 if (atkbd->scroll) {
520 if (click != -1)
521 input_report_key(dev, BTN_MIDDLE, click);
522 input_report_rel(dev, REL_WHEEL,
523 atkbd->release ? -scroll : scroll);
524 input_report_rel(dev, REL_HWHEEL, hscroll);
525 input_sync(dev);
526 }
527
528 atkbd->release = false;
529 out:
530 return IRQ_HANDLED;
531 }
532
533 static int atkbd_set_repeat_rate(struct atkbd *atkbd)
534 {
535 const short period[32] =
536 { 33, 37, 42, 46, 50, 54, 58, 63, 67, 75, 83, 92, 100, 109, 116, 125,
537 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 };
538 const short delay[4] =
539 { 250, 500, 750, 1000 };
540
541 struct input_dev *dev = atkbd->dev;
542 unsigned char param;
543 int i = 0, j = 0;
544
545 while (i < ARRAY_SIZE(period) - 1 && period[i] < dev->rep[REP_PERIOD])
546 i++;
547 dev->rep[REP_PERIOD] = period[i];
548
549 while (j < ARRAY_SIZE(delay) - 1 && delay[j] < dev->rep[REP_DELAY])
550 j++;
551 dev->rep[REP_DELAY] = delay[j];
552
553 param = i | (j << 5);
554 return ps2_command(&atkbd->ps2dev, &param, ATKBD_CMD_SETREP);
555 }
556
557 static int atkbd_set_leds(struct atkbd *atkbd)
558 {
559 struct input_dev *dev = atkbd->dev;
560 unsigned char param[2];
561
562 param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0)
563 | (test_bit(LED_NUML, dev->led) ? 2 : 0)
564 | (test_bit(LED_CAPSL, dev->led) ? 4 : 0);
565 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS))
566 return -1;
567
568 if (atkbd->extra) {
569 param[0] = 0;
570 param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0)
571 | (test_bit(LED_SLEEP, dev->led) ? 0x02 : 0)
572 | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0)
573 | (test_bit(LED_MISC, dev->led) ? 0x10 : 0)
574 | (test_bit(LED_MUTE, dev->led) ? 0x20 : 0);
575 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS))
576 return -1;
577 }
578
579 return 0;
580 }
581
582 /*
583 * atkbd_event_work() is used to complete processing of events that
584 * can not be processed by input_event() which is often called from
585 * interrupt context.
586 */
587
588 static void atkbd_event_work(struct work_struct *work)
589 {
590 struct atkbd *atkbd = container_of(work, struct atkbd, event_work.work);
591
592 mutex_lock(&atkbd->mutex);
593
594 if (!atkbd->enabled) {
595 /*
596 * Serio ports are resumed asynchronously so while driver core
597 * thinks that device is already fully operational in reality
598 * it may not be ready yet. In this case we need to keep
599 * rescheduling till reconnect completes.
600 */
601 schedule_delayed_work(&atkbd->event_work,
602 msecs_to_jiffies(100));
603 } else {
604 if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask))
605 atkbd_set_leds(atkbd);
606
607 if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask))
608 atkbd_set_repeat_rate(atkbd);
609 }
610
611 mutex_unlock(&atkbd->mutex);
612 }
613
614 /*
615 * Schedule switch for execution. We need to throttle requests,
616 * otherwise keyboard may become unresponsive.
617 */
618 static void atkbd_schedule_event_work(struct atkbd *atkbd, int event_bit)
619 {
620 unsigned long delay = msecs_to_jiffies(50);
621
622 if (time_after(jiffies, atkbd->event_jiffies + delay))
623 delay = 0;
624
625 atkbd->event_jiffies = jiffies;
626 set_bit(event_bit, &atkbd->event_mask);
627 mb();
628 schedule_delayed_work(&atkbd->event_work, delay);
629 }
630
631 /*
632 * Event callback from the input module. Events that change the state of
633 * the hardware are processed here. If action can not be performed in
634 * interrupt context it is offloaded to atkbd_event_work.
635 */
636
637 static int atkbd_event(struct input_dev *dev,
638 unsigned int type, unsigned int code, int value)
639 {
640 struct atkbd *atkbd = input_get_drvdata(dev);
641
642 if (!atkbd->write)
643 return -1;
644
645 switch (type) {
646
647 case EV_LED:
648 atkbd_schedule_event_work(atkbd, ATKBD_LED_EVENT_BIT);
649 return 0;
650
651 case EV_REP:
652 if (!atkbd->softrepeat)
653 atkbd_schedule_event_work(atkbd, ATKBD_REP_EVENT_BIT);
654 return 0;
655
656 default:
657 return -1;
658 }
659 }
660
661 /*
662 * atkbd_enable() signals that interrupt handler is allowed to
663 * generate input events.
664 */
665
666 static inline void atkbd_enable(struct atkbd *atkbd)
667 {
668 serio_pause_rx(atkbd->ps2dev.serio);
669 atkbd->enabled = true;
670 serio_continue_rx(atkbd->ps2dev.serio);
671 }
672
673 /*
674 * atkbd_disable() tells input handler that all incoming data except
675 * for ACKs and command response should be dropped.
676 */
677
678 static inline void atkbd_disable(struct atkbd *atkbd)
679 {
680 serio_pause_rx(atkbd->ps2dev.serio);
681 atkbd->enabled = false;
682 serio_continue_rx(atkbd->ps2dev.serio);
683 }
684
685 static int atkbd_activate(struct atkbd *atkbd)
686 {
687 struct ps2dev *ps2dev = &atkbd->ps2dev;
688
689 /*
690 * Enable the keyboard to receive keystrokes.
691 */
692
693 if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) {
694 dev_err(&ps2dev->serio->dev,
695 "Failed to enable keyboard on %s\n",
696 ps2dev->serio->phys);
697 return -1;
698 }
699
700 return 0;
701 }
702
703 /*
704 * atkbd_deactivate() resets and disables the keyboard from sending
705 * keystrokes.
706 */
707
708 static void atkbd_deactivate(struct atkbd *atkbd)
709 {
710 struct ps2dev *ps2dev = &atkbd->ps2dev;
711
712 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_DIS))
713 dev_err(&ps2dev->serio->dev,
714 "Failed to deactivate keyboard on %s\n",
715 ps2dev->serio->phys);
716 }
717
718 /*
719 * atkbd_probe() probes for an AT keyboard on a serio port.
720 */
721
722 static int atkbd_probe(struct atkbd *atkbd)
723 {
724 struct ps2dev *ps2dev = &atkbd->ps2dev;
725 unsigned char param[2];
726
727 /*
728 * Some systems, where the bit-twiddling when testing the io-lines of the
729 * controller may confuse the keyboard need a full reset of the keyboard. On
730 * these systems the BIOS also usually doesn't do it for us.
731 */
732
733 if (atkbd_reset)
734 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT))
735 dev_warn(&ps2dev->serio->dev,
736 "keyboard reset failed on %s\n",
737 ps2dev->serio->phys);
738
739 /*
740 * Then we check the keyboard ID. We should get 0xab83 under normal conditions.
741 * Some keyboards report different values, but the first byte is always 0xab or
742 * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this
743 * should make sure we don't try to set the LEDs on it.
744 */
745
746 param[0] = param[1] = 0xa5; /* initialize with invalid values */
747 if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) {
748
749 /*
750 * If the get ID command failed, we check if we can at least set the LEDs on
751 * the keyboard. This should work on every keyboard out there. It also turns
752 * the LEDs off, which we want anyway.
753 */
754 param[0] = 0;
755 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
756 return -1;
757 atkbd->id = 0xabba;
758 return 0;
759 }
760
761 if (!ps2_is_keyboard_id(param[0]))
762 return -1;
763
764 atkbd->id = (param[0] << 8) | param[1];
765
766 if (atkbd->id == 0xaca1 && atkbd->translated) {
767 dev_err(&ps2dev->serio->dev,
768 "NCD terminal keyboards are only supported on non-translating controllers. "
769 "Use i8042.direct=1 to disable translation.\n");
770 return -1;
771 }
772
773 /*
774 * Make sure nothing is coming from the keyboard and disturbs our
775 * internal state.
776 */
777 if (!atkbd_skip_deactivate)
778 atkbd_deactivate(atkbd);
779
780 return 0;
781 }
782
783 /*
784 * atkbd_select_set checks if a keyboard has a working Set 3 support, and
785 * sets it into that. Unfortunately there are keyboards that can be switched
786 * to Set 3, but don't work well in that (BTC Multimedia ...)
787 */
788
789 static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra)
790 {
791 struct ps2dev *ps2dev = &atkbd->ps2dev;
792 unsigned char param[2];
793
794 atkbd->extra = false;
795 /*
796 * For known special keyboards we can go ahead and set the correct set.
797 * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and
798 * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards.
799 */
800
801 if (atkbd->translated)
802 return 2;
803
804 if (atkbd->id == 0xaca1) {
805 param[0] = 3;
806 ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET);
807 return 3;
808 }
809
810 if (allow_extra) {
811 param[0] = 0x71;
812 if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) {
813 atkbd->extra = true;
814 return 2;
815 }
816 }
817
818 if (atkbd_terminal) {
819 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MB);
820 return 3;
821 }
822
823 if (target_set != 3)
824 return 2;
825
826 if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) {
827 atkbd->id = param[0] << 8 | param[1];
828 return 2;
829 }
830
831 param[0] = 3;
832 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
833 return 2;
834
835 param[0] = 0;
836 if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET))
837 return 2;
838
839 if (param[0] != 3) {
840 param[0] = 2;
841 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
842 return 2;
843 }
844
845 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR);
846
847 return 3;
848 }
849
850 static int atkbd_reset_state(struct atkbd *atkbd)
851 {
852 struct ps2dev *ps2dev = &atkbd->ps2dev;
853 unsigned char param[1];
854
855 /*
856 * Set the LEDs to a predefined state (all off).
857 */
858
859 param[0] = 0;
860 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
861 return -1;
862
863 /*
864 * Set autorepeat to fastest possible.
865 */
866
867 param[0] = 0;
868 if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP))
869 return -1;
870
871 return 0;
872 }
873
874 /*
875 * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a
876 * reboot.
877 */
878
879 static void atkbd_cleanup(struct serio *serio)
880 {
881 struct atkbd *atkbd = serio_get_drvdata(serio);
882
883 atkbd_disable(atkbd);
884 ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_DEF);
885 }
886
887
888 /*
889 * atkbd_disconnect() closes and frees.
890 */
891
892 static void atkbd_disconnect(struct serio *serio)
893 {
894 struct atkbd *atkbd = serio_get_drvdata(serio);
895
896 sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
897
898 atkbd_disable(atkbd);
899
900 input_unregister_device(atkbd->dev);
901
902 /*
903 * Make sure we don't have a command in flight.
904 * Note that since atkbd->enabled is false event work will keep
905 * rescheduling itself until it gets canceled and will not try
906 * accessing freed input device or serio port.
907 */
908 cancel_delayed_work_sync(&atkbd->event_work);
909
910 serio_close(serio);
911 serio_set_drvdata(serio, NULL);
912 kfree(atkbd);
913 }
914
915 /*
916 * generate release events for the keycodes given in data
917 */
918 static void atkbd_apply_forced_release_keylist(struct atkbd* atkbd,
919 const void *data)
920 {
921 const unsigned int *keys = data;
922 unsigned int i;
923
924 if (atkbd->set == 2)
925 for (i = 0; keys[i] != -1U; i++)
926 __set_bit(keys[i], atkbd->force_release_mask);
927 }
928
929 /*
930 * Most special keys (Fn+F?) on Dell laptops do not generate release
931 * events so we have to do it ourselves.
932 */
933 static unsigned int atkbd_dell_laptop_forced_release_keys[] = {
934 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8f, 0x93, -1U
935 };
936
937 /*
938 * Perform fixup for HP system that doesn't generate release
939 * for its video switch
940 */
941 static unsigned int atkbd_hp_forced_release_keys[] = {
942 0x94, -1U
943 };
944
945 /*
946 * Samsung NC10,NC20 with Fn+F? key release not working
947 */
948 static unsigned int atkbd_samsung_forced_release_keys[] = {
949 0x82, 0x83, 0x84, 0x86, 0x88, 0x89, 0xb3, 0xf7, 0xf9, -1U
950 };
951
952 /*
953 * Amilo Pi 3525 key release for Fn+Volume keys not working
954 */
955 static unsigned int atkbd_amilo_pi3525_forced_release_keys[] = {
956 0x20, 0xa0, 0x2e, 0xae, 0x30, 0xb0, -1U
957 };
958
959 /*
960 * Amilo Xi 3650 key release for light touch bar not working
961 */
962 static unsigned int atkbd_amilo_xi3650_forced_release_keys[] = {
963 0x67, 0xed, 0x90, 0xa2, 0x99, 0xa4, 0xae, 0xb0, -1U
964 };
965
966 /*
967 * Soltech TA12 system with broken key release on volume keys and mute key
968 */
969 static unsigned int atkdb_soltech_ta12_forced_release_keys[] = {
970 0xa0, 0xae, 0xb0, -1U
971 };
972
973 /*
974 * Many notebooks don't send key release event for volume up/down
975 * keys, with key list below common among them
976 */
977 static unsigned int atkbd_volume_forced_release_keys[] = {
978 0xae, 0xb0, -1U
979 };
980
981 /*
982 * OQO 01+ multimedia keys (64--66) generate e0 6x upon release whereas
983 * they should be generating e4-e6 (0x80 | code).
984 */
985 static unsigned int atkbd_oqo_01plus_scancode_fixup(struct atkbd *atkbd,
986 unsigned int code)
987 {
988 if (atkbd->translated && atkbd->emul == 1 &&
989 (code == 0x64 || code == 0x65 || code == 0x66)) {
990 atkbd->emul = 0;
991 code |= 0x80;
992 }
993
994 return code;
995 }
996
997 /*
998 * atkbd_set_keycode_table() initializes keyboard's keycode table
999 * according to the selected scancode set
1000 */
1001
1002 static void atkbd_set_keycode_table(struct atkbd *atkbd)
1003 {
1004 unsigned int scancode;
1005 int i, j;
1006
1007 memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
1008 bitmap_zero(atkbd->force_release_mask, ATKBD_KEYMAP_SIZE);
1009
1010 if (atkbd->translated) {
1011 for (i = 0; i < 128; i++) {
1012 scancode = atkbd_unxlate_table[i];
1013 atkbd->keycode[i] = atkbd_set2_keycode[scancode];
1014 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80];
1015 if (atkbd->scroll)
1016 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
1017 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2)
1018 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
1019 }
1020 } else if (atkbd->set == 3) {
1021 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
1022 } else {
1023 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
1024
1025 if (atkbd->scroll)
1026 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) {
1027 scancode = atkbd_scroll_keys[i].set2;
1028 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode;
1029 }
1030 }
1031
1032 /*
1033 * HANGEUL and HANJA keys do not send release events so we need to
1034 * generate such events ourselves
1035 */
1036 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL);
1037 atkbd->keycode[scancode] = KEY_HANGEUL;
1038 __set_bit(scancode, atkbd->force_release_mask);
1039
1040 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA);
1041 atkbd->keycode[scancode] = KEY_HANJA;
1042 __set_bit(scancode, atkbd->force_release_mask);
1043
1044 /*
1045 * Perform additional fixups
1046 */
1047 if (atkbd_platform_fixup)
1048 atkbd_platform_fixup(atkbd, atkbd_platform_fixup_data);
1049 }
1050
1051 /*
1052 * atkbd_set_device_attrs() sets up keyboard's input device structure
1053 */
1054
1055 static void atkbd_set_device_attrs(struct atkbd *atkbd)
1056 {
1057 struct input_dev *input_dev = atkbd->dev;
1058 int i;
1059
1060 if (atkbd->extra)
1061 snprintf(atkbd->name, sizeof(atkbd->name),
1062 "AT Set 2 Extra keyboard");
1063 else
1064 snprintf(atkbd->name, sizeof(atkbd->name),
1065 "AT %s Set %d keyboard",
1066 atkbd->translated ? "Translated" : "Raw", atkbd->set);
1067
1068 snprintf(atkbd->phys, sizeof(atkbd->phys),
1069 "%s/input0", atkbd->ps2dev.serio->phys);
1070
1071 input_dev->name = atkbd->name;
1072 input_dev->phys = atkbd->phys;
1073 input_dev->id.bustype = BUS_I8042;
1074 input_dev->id.vendor = 0x0001;
1075 input_dev->id.product = atkbd->translated ? 1 : atkbd->set;
1076 input_dev->id.version = atkbd->id;
1077 input_dev->event = atkbd_event;
1078 input_dev->dev.parent = &atkbd->ps2dev.serio->dev;
1079
1080 input_set_drvdata(input_dev, atkbd);
1081
1082 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
1083 BIT_MASK(EV_MSC);
1084
1085 if (atkbd->write) {
1086 input_dev->evbit[0] |= BIT_MASK(EV_LED);
1087 input_dev->ledbit[0] = BIT_MASK(LED_NUML) |
1088 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL);
1089 }
1090
1091 if (atkbd->extra)
1092 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) |
1093 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) |
1094 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC);
1095
1096 if (!atkbd->softrepeat) {
1097 input_dev->rep[REP_DELAY] = 250;
1098 input_dev->rep[REP_PERIOD] = 33;
1099 }
1100
1101 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) :
1102 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN);
1103
1104 if (atkbd->scroll) {
1105 input_dev->evbit[0] |= BIT_MASK(EV_REL);
1106 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) |
1107 BIT_MASK(REL_HWHEEL);
1108 __set_bit(BTN_MIDDLE, input_dev->keybit);
1109 }
1110
1111 input_dev->keycode = atkbd->keycode;
1112 input_dev->keycodesize = sizeof(unsigned short);
1113 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
1114
1115 for (i = 0; i < ATKBD_KEYMAP_SIZE; i++) {
1116 if (atkbd->keycode[i] != KEY_RESERVED &&
1117 atkbd->keycode[i] != ATKBD_KEY_NULL &&
1118 atkbd->keycode[i] < ATKBD_SPECIAL) {
1119 __set_bit(atkbd->keycode[i], input_dev->keybit);
1120 }
1121 }
1122 }
1123
1124 /*
1125 * atkbd_connect() is called when the serio module finds an interface
1126 * that isn't handled yet by an appropriate device driver. We check if
1127 * there is an AT keyboard out there and if yes, we register ourselves
1128 * to the input module.
1129 */
1130
1131 static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
1132 {
1133 struct atkbd *atkbd;
1134 struct input_dev *dev;
1135 int err = -ENOMEM;
1136
1137 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL);
1138 dev = input_allocate_device();
1139 if (!atkbd || !dev)
1140 goto fail1;
1141
1142 atkbd->dev = dev;
1143 ps2_init(&atkbd->ps2dev, serio);
1144 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work);
1145 mutex_init(&atkbd->mutex);
1146
1147 switch (serio->id.type) {
1148
1149 case SERIO_8042_XL:
1150 atkbd->translated = true;
1151 /* Fall through */
1152
1153 case SERIO_8042:
1154 if (serio->write)
1155 atkbd->write = true;
1156 break;
1157 }
1158
1159 atkbd->softraw = atkbd_softraw;
1160 atkbd->softrepeat = atkbd_softrepeat;
1161 atkbd->scroll = atkbd_scroll;
1162
1163 if (atkbd->softrepeat)
1164 atkbd->softraw = true;
1165
1166 serio_set_drvdata(serio, atkbd);
1167
1168 err = serio_open(serio, drv);
1169 if (err)
1170 goto fail2;
1171
1172 if (atkbd->write) {
1173
1174 if (atkbd_probe(atkbd)) {
1175 err = -ENODEV;
1176 goto fail3;
1177 }
1178
1179 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
1180 atkbd_reset_state(atkbd);
1181
1182 } else {
1183 atkbd->set = 2;
1184 atkbd->id = 0xab00;
1185 }
1186
1187 atkbd_set_keycode_table(atkbd);
1188 atkbd_set_device_attrs(atkbd);
1189
1190 err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group);
1191 if (err)
1192 goto fail3;
1193
1194 atkbd_enable(atkbd);
1195 if (serio->write)
1196 atkbd_activate(atkbd);
1197
1198 err = input_register_device(atkbd->dev);
1199 if (err)
1200 goto fail4;
1201
1202 return 0;
1203
1204 fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
1205 fail3: serio_close(serio);
1206 fail2: serio_set_drvdata(serio, NULL);
1207 fail1: input_free_device(dev);
1208 kfree(atkbd);
1209 return err;
1210 }
1211
1212 /*
1213 * atkbd_reconnect() tries to restore keyboard into a sane state and is
1214 * most likely called on resume.
1215 */
1216
1217 static int atkbd_reconnect(struct serio *serio)
1218 {
1219 struct atkbd *atkbd = serio_get_drvdata(serio);
1220 struct serio_driver *drv = serio->drv;
1221 int retval = -1;
1222
1223 if (!atkbd || !drv) {
1224 dev_dbg(&serio->dev,
1225 "reconnect request, but serio is disconnected, ignoring...\n");
1226 return -1;
1227 }
1228
1229 mutex_lock(&atkbd->mutex);
1230
1231 atkbd_disable(atkbd);
1232
1233 if (atkbd->write) {
1234 if (atkbd_probe(atkbd))
1235 goto out;
1236
1237 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
1238 goto out;
1239
1240 /*
1241 * Restore LED state and repeat rate. While input core
1242 * will do this for us at resume time reconnect may happen
1243 * because user requested it via sysfs or simply because
1244 * keyboard was unplugged and plugged in again so we need
1245 * to do it ourselves here.
1246 */
1247 atkbd_set_leds(atkbd);
1248 if (!atkbd->softrepeat)
1249 atkbd_set_repeat_rate(atkbd);
1250
1251 }
1252
1253 /*
1254 * Reset our state machine in case reconnect happened in the middle
1255 * of multi-byte scancode.
1256 */
1257 atkbd->xl_bit = 0;
1258 atkbd->emul = 0;
1259
1260 atkbd_enable(atkbd);
1261 if (atkbd->write)
1262 atkbd_activate(atkbd);
1263
1264 retval = 0;
1265
1266 out:
1267 mutex_unlock(&atkbd->mutex);
1268 return retval;
1269 }
1270
1271 static const struct serio_device_id atkbd_serio_ids[] = {
1272 {
1273 .type = SERIO_8042,
1274 .proto = SERIO_ANY,
1275 .id = SERIO_ANY,
1276 .extra = SERIO_ANY,
1277 },
1278 {
1279 .type = SERIO_8042_XL,
1280 .proto = SERIO_ANY,
1281 .id = SERIO_ANY,
1282 .extra = SERIO_ANY,
1283 },
1284 {
1285 .type = SERIO_RS232,
1286 .proto = SERIO_PS2SER,
1287 .id = SERIO_ANY,
1288 .extra = SERIO_ANY,
1289 },
1290 { 0 }
1291 };
1292
1293 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
1294
1295 static struct serio_driver atkbd_drv = {
1296 .driver = {
1297 .name = "atkbd",
1298 },
1299 .description = DRIVER_DESC,
1300 .id_table = atkbd_serio_ids,
1301 .interrupt = atkbd_interrupt,
1302 .connect = atkbd_connect,
1303 .reconnect = atkbd_reconnect,
1304 .disconnect = atkbd_disconnect,
1305 .cleanup = atkbd_cleanup,
1306 };
1307
1308 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
1309 ssize_t (*handler)(struct atkbd *, char *))
1310 {
1311 struct serio *serio = to_serio_port(dev);
1312 struct atkbd *atkbd = serio_get_drvdata(serio);
1313
1314 return handler(atkbd, buf);
1315 }
1316
1317 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
1318 ssize_t (*handler)(struct atkbd *, const char *, size_t))
1319 {
1320 struct serio *serio = to_serio_port(dev);
1321 struct atkbd *atkbd = serio_get_drvdata(serio);
1322 int retval;
1323
1324 retval = mutex_lock_interruptible(&atkbd->mutex);
1325 if (retval)
1326 return retval;
1327
1328 atkbd_disable(atkbd);
1329 retval = handler(atkbd, buf, count);
1330 atkbd_enable(atkbd);
1331
1332 mutex_unlock(&atkbd->mutex);
1333
1334 return retval;
1335 }
1336
1337 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
1338 {
1339 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
1340 }
1341
1342 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
1343 {
1344 struct input_dev *old_dev, *new_dev;
1345 unsigned int value;
1346 int err;
1347 bool old_extra;
1348 unsigned char old_set;
1349
1350 if (!atkbd->write)
1351 return -EIO;
1352
1353 err = kstrtouint(buf, 10, &value);
1354 if (err)
1355 return err;
1356
1357 if (value > 1)
1358 return -EINVAL;
1359
1360 if (atkbd->extra != value) {
1361 /*
1362 * Since device's properties will change we need to
1363 * unregister old device. But allocate and register
1364 * new one first to make sure we have it.
1365 */
1366 old_dev = atkbd->dev;
1367 old_extra = atkbd->extra;
1368 old_set = atkbd->set;
1369
1370 new_dev = input_allocate_device();
1371 if (!new_dev)
1372 return -ENOMEM;
1373
1374 atkbd->dev = new_dev;
1375 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
1376 atkbd_reset_state(atkbd);
1377 atkbd_activate(atkbd);
1378 atkbd_set_keycode_table(atkbd);
1379 atkbd_set_device_attrs(atkbd);
1380
1381 err = input_register_device(atkbd->dev);
1382 if (err) {
1383 input_free_device(new_dev);
1384
1385 atkbd->dev = old_dev;
1386 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1387 atkbd_set_keycode_table(atkbd);
1388 atkbd_set_device_attrs(atkbd);
1389
1390 return err;
1391 }
1392 input_unregister_device(old_dev);
1393
1394 }
1395 return count;
1396 }
1397
1398 static ssize_t atkbd_show_force_release(struct atkbd *atkbd, char *buf)
1399 {
1400 size_t len = scnprintf(buf, PAGE_SIZE - 1, "%*pbl",
1401 ATKBD_KEYMAP_SIZE, atkbd->force_release_mask);
1402
1403 buf[len++] = '\n';
1404 buf[len] = '\0';
1405
1406 return len;
1407 }
1408
1409 static ssize_t atkbd_set_force_release(struct atkbd *atkbd,
1410 const char *buf, size_t count)
1411 {
1412 /* 64 bytes on stack should be acceptable */
1413 DECLARE_BITMAP(new_mask, ATKBD_KEYMAP_SIZE);
1414 int err;
1415
1416 err = bitmap_parselist(buf, new_mask, ATKBD_KEYMAP_SIZE);
1417 if (err)
1418 return err;
1419
1420 memcpy(atkbd->force_release_mask, new_mask, sizeof(atkbd->force_release_mask));
1421 return count;
1422 }
1423
1424
1425 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
1426 {
1427 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
1428 }
1429
1430 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
1431 {
1432 struct input_dev *old_dev, *new_dev;
1433 unsigned int value;
1434 int err;
1435 bool old_scroll;
1436
1437 err = kstrtouint(buf, 10, &value);
1438 if (err)
1439 return err;
1440
1441 if (value > 1)
1442 return -EINVAL;
1443
1444 if (atkbd->scroll != value) {
1445 old_dev = atkbd->dev;
1446 old_scroll = atkbd->scroll;
1447
1448 new_dev = input_allocate_device();
1449 if (!new_dev)
1450 return -ENOMEM;
1451
1452 atkbd->dev = new_dev;
1453 atkbd->scroll = value;
1454 atkbd_set_keycode_table(atkbd);
1455 atkbd_set_device_attrs(atkbd);
1456
1457 err = input_register_device(atkbd->dev);
1458 if (err) {
1459 input_free_device(new_dev);
1460
1461 atkbd->scroll = old_scroll;
1462 atkbd->dev = old_dev;
1463 atkbd_set_keycode_table(atkbd);
1464 atkbd_set_device_attrs(atkbd);
1465
1466 return err;
1467 }
1468 input_unregister_device(old_dev);
1469 }
1470 return count;
1471 }
1472
1473 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
1474 {
1475 return sprintf(buf, "%d\n", atkbd->set);
1476 }
1477
1478 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
1479 {
1480 struct input_dev *old_dev, *new_dev;
1481 unsigned int value;
1482 int err;
1483 unsigned char old_set;
1484 bool old_extra;
1485
1486 if (!atkbd->write)
1487 return -EIO;
1488
1489 err = kstrtouint(buf, 10, &value);
1490 if (err)
1491 return err;
1492
1493 if (value != 2 && value != 3)
1494 return -EINVAL;
1495
1496 if (atkbd->set != value) {
1497 old_dev = atkbd->dev;
1498 old_extra = atkbd->extra;
1499 old_set = atkbd->set;
1500
1501 new_dev = input_allocate_device();
1502 if (!new_dev)
1503 return -ENOMEM;
1504
1505 atkbd->dev = new_dev;
1506 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra);
1507 atkbd_reset_state(atkbd);
1508 atkbd_activate(atkbd);
1509 atkbd_set_keycode_table(atkbd);
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->set = atkbd_select_set(atkbd, old_set, old_extra);
1518 atkbd_set_keycode_table(atkbd);
1519 atkbd_set_device_attrs(atkbd);
1520
1521 return err;
1522 }
1523 input_unregister_device(old_dev);
1524 }
1525 return count;
1526 }
1527
1528 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
1529 {
1530 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
1531 }
1532
1533 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
1534 {
1535 struct input_dev *old_dev, *new_dev;
1536 unsigned int value;
1537 int err;
1538 bool old_softrepeat, old_softraw;
1539
1540 if (!atkbd->write)
1541 return -EIO;
1542
1543 err = kstrtouint(buf, 10, &value);
1544 if (err)
1545 return err;
1546
1547 if (value > 1)
1548 return -EINVAL;
1549
1550 if (atkbd->softrepeat != value) {
1551 old_dev = atkbd->dev;
1552 old_softrepeat = atkbd->softrepeat;
1553 old_softraw = atkbd->softraw;
1554
1555 new_dev = input_allocate_device();
1556 if (!new_dev)
1557 return -ENOMEM;
1558
1559 atkbd->dev = new_dev;
1560 atkbd->softrepeat = value;
1561 if (atkbd->softrepeat)
1562 atkbd->softraw = true;
1563 atkbd_set_device_attrs(atkbd);
1564
1565 err = input_register_device(atkbd->dev);
1566 if (err) {
1567 input_free_device(new_dev);
1568
1569 atkbd->dev = old_dev;
1570 atkbd->softrepeat = old_softrepeat;
1571 atkbd->softraw = old_softraw;
1572 atkbd_set_device_attrs(atkbd);
1573
1574 return err;
1575 }
1576 input_unregister_device(old_dev);
1577 }
1578 return count;
1579 }
1580
1581
1582 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
1583 {
1584 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
1585 }
1586
1587 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
1588 {
1589 struct input_dev *old_dev, *new_dev;
1590 unsigned int value;
1591 int err;
1592 bool old_softraw;
1593
1594 err = kstrtouint(buf, 10, &value);
1595 if (err)
1596 return err;
1597
1598 if (value > 1)
1599 return -EINVAL;
1600
1601 if (atkbd->softraw != value) {
1602 old_dev = atkbd->dev;
1603 old_softraw = atkbd->softraw;
1604
1605 new_dev = input_allocate_device();
1606 if (!new_dev)
1607 return -ENOMEM;
1608
1609 atkbd->dev = new_dev;
1610 atkbd->softraw = value;
1611 atkbd_set_device_attrs(atkbd);
1612
1613 err = input_register_device(atkbd->dev);
1614 if (err) {
1615 input_free_device(new_dev);
1616
1617 atkbd->dev = old_dev;
1618 atkbd->softraw = old_softraw;
1619 atkbd_set_device_attrs(atkbd);
1620
1621 return err;
1622 }
1623 input_unregister_device(old_dev);
1624 }
1625 return count;
1626 }
1627
1628 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
1629 {
1630 return sprintf(buf, "%lu\n", atkbd->err_count);
1631 }
1632
1633 static int __init atkbd_setup_forced_release(const struct dmi_system_id *id)
1634 {
1635 atkbd_platform_fixup = atkbd_apply_forced_release_keylist;
1636 atkbd_platform_fixup_data = id->driver_data;
1637
1638 return 1;
1639 }
1640
1641 static int __init atkbd_setup_scancode_fixup(const struct dmi_system_id *id)
1642 {
1643 atkbd_platform_scancode_fixup = id->driver_data;
1644
1645 return 1;
1646 }
1647
1648 static int __init atkbd_deactivate_fixup(const struct dmi_system_id *id)
1649 {
1650 atkbd_skip_deactivate = true;
1651 return 1;
1652 }
1653
1654 /*
1655 * NOTE: do not add any more "force release" quirks to this table. The
1656 * task of adjusting list of keys that should be "released" automatically
1657 * by the driver is now delegated to userspace tools, such as udev, so
1658 * submit such quirks there.
1659 */
1660 static const struct dmi_system_id atkbd_dmi_quirk_table[] __initconst = {
1661 {
1662 .matches = {
1663 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
1664 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1665 },
1666 .callback = atkbd_setup_forced_release,
1667 .driver_data = atkbd_dell_laptop_forced_release_keys,
1668 },
1669 {
1670 .matches = {
1671 DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
1672 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1673 },
1674 .callback = atkbd_setup_forced_release,
1675 .driver_data = atkbd_dell_laptop_forced_release_keys,
1676 },
1677 {
1678 .matches = {
1679 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1680 DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"),
1681 },
1682 .callback = atkbd_setup_forced_release,
1683 .driver_data = atkbd_hp_forced_release_keys,
1684 },
1685 {
1686 .matches = {
1687 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1688 DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion ZV6100"),
1689 },
1690 .callback = atkbd_setup_forced_release,
1691 .driver_data = atkbd_volume_forced_release_keys,
1692 },
1693 {
1694 .matches = {
1695 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1696 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4000"),
1697 },
1698 .callback = atkbd_setup_forced_release,
1699 .driver_data = atkbd_volume_forced_release_keys,
1700 },
1701 {
1702 .matches = {
1703 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1704 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4100"),
1705 },
1706 .callback = atkbd_setup_forced_release,
1707 .driver_data = atkbd_volume_forced_release_keys,
1708 },
1709 {
1710 .matches = {
1711 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1712 DMI_MATCH(DMI_PRODUCT_NAME, "Presario R4200"),
1713 },
1714 .callback = atkbd_setup_forced_release,
1715 .driver_data = atkbd_volume_forced_release_keys,
1716 },
1717 {
1718 /* Inventec Symphony */
1719 .matches = {
1720 DMI_MATCH(DMI_SYS_VENDOR, "INVENTEC"),
1721 DMI_MATCH(DMI_PRODUCT_NAME, "SYMPHONY 6.0/7.0"),
1722 },
1723 .callback = atkbd_setup_forced_release,
1724 .driver_data = atkbd_volume_forced_release_keys,
1725 },
1726 {
1727 /* Samsung NC10 */
1728 .matches = {
1729 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1730 DMI_MATCH(DMI_PRODUCT_NAME, "NC10"),
1731 },
1732 .callback = atkbd_setup_forced_release,
1733 .driver_data = atkbd_samsung_forced_release_keys,
1734 },
1735 {
1736 /* Samsung NC20 */
1737 .matches = {
1738 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1739 DMI_MATCH(DMI_PRODUCT_NAME, "NC20"),
1740 },
1741 .callback = atkbd_setup_forced_release,
1742 .driver_data = atkbd_samsung_forced_release_keys,
1743 },
1744 {
1745 /* Samsung SQ45S70S */
1746 .matches = {
1747 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1748 DMI_MATCH(DMI_PRODUCT_NAME, "SQ45S70S"),
1749 },
1750 .callback = atkbd_setup_forced_release,
1751 .driver_data = atkbd_samsung_forced_release_keys,
1752 },
1753 {
1754 /* Fujitsu Amilo PA 1510 */
1755 .matches = {
1756 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1757 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 1510"),
1758 },
1759 .callback = atkbd_setup_forced_release,
1760 .driver_data = atkbd_volume_forced_release_keys,
1761 },
1762 {
1763 /* Fujitsu Amilo Pi 3525 */
1764 .matches = {
1765 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1766 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pi 3525"),
1767 },
1768 .callback = atkbd_setup_forced_release,
1769 .driver_data = atkbd_amilo_pi3525_forced_release_keys,
1770 },
1771 {
1772 /* Fujitsu Amilo Xi 3650 */
1773 .matches = {
1774 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1775 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Xi 3650"),
1776 },
1777 .callback = atkbd_setup_forced_release,
1778 .driver_data = atkbd_amilo_xi3650_forced_release_keys,
1779 },
1780 {
1781 .matches = {
1782 DMI_MATCH(DMI_SYS_VENDOR, "Soltech Corporation"),
1783 DMI_MATCH(DMI_PRODUCT_NAME, "TA12"),
1784 },
1785 .callback = atkbd_setup_forced_release,
1786 .driver_data = atkdb_soltech_ta12_forced_release_keys,
1787 },
1788 {
1789 /* OQO Model 01+ */
1790 .matches = {
1791 DMI_MATCH(DMI_SYS_VENDOR, "OQO"),
1792 DMI_MATCH(DMI_PRODUCT_NAME, "ZEPTO"),
1793 },
1794 .callback = atkbd_setup_scancode_fixup,
1795 .driver_data = atkbd_oqo_01plus_scancode_fixup,
1796 },
1797 {
1798 .matches = {
1799 DMI_MATCH(DMI_SYS_VENDOR, "LG Electronics"),
1800 },
1801 .callback = atkbd_deactivate_fixup,
1802 },
1803 { }
1804 };
1805
1806 static int __init atkbd_init(void)
1807 {
1808 dmi_check_system(atkbd_dmi_quirk_table);
1809
1810 return serio_register_driver(&atkbd_drv);
1811 }
1812
1813 static void __exit atkbd_exit(void)
1814 {
1815 serio_unregister_driver(&atkbd_drv);
1816 }
1817
1818 module_init(atkbd_init);
1819 module_exit(atkbd_exit);
Linux with added FPC-III support