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Input: atkbd - properly handle special keys on Dell Latitudes
[deliverable/linux.git] / drivers / input / keyboard / atkbd.c
CommitLineData
1da177e4
LT		 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/moduleparam.h>
23#include <linux/slab.h>
24#include <linux/interrupt.h>
25#include <linux/init.h>
26#include <linux/input.h>
27#include <linux/serio.h>
28#include <linux/workqueue.h>
29#include <linux/libps2.h>
33d3f07a 30#include <linux/mutex.h>
554101e3 31#include <linux/dmi.h>
1da177e4
LT		 32
33#define DRIVER_DESC "AT and PS/2 keyboard driver"
34
35MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
36MODULE_DESCRIPTION(DRIVER_DESC);
37MODULE_LICENSE("GPL");
38
39static int atkbd_set = 2;
40module_param_named(set, atkbd_set, int, 0);
41MODULE_PARM_DESC(set, "Select keyboard code set (2 = default, 3 = PS/2 native)");
42
43#if defined(__i386__) || defined(__x86_64__) || defined(__hppa__)
44static int atkbd_reset;
45#else
46static int atkbd_reset = 1;
47#endif
48module_param_named(reset, atkbd_reset, bool, 0);
49MODULE_PARM_DESC(reset, "Reset keyboard during initialization");
50
51static int atkbd_softrepeat;
52module_param_named(softrepeat, atkbd_softrepeat, bool, 0);
53MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat");
54
55static int atkbd_softraw = 1;
56module_param_named(softraw, atkbd_softraw, bool, 0);
57MODULE_PARM_DESC(softraw, "Use software generated rawmode");
58
0ae051a1 59static int atkbd_scroll;
1da177e4
LT		 60module_param_named(scroll, atkbd_scroll, bool, 0);
61MODULE_PARM_DESC(scroll, "Enable scroll-wheel on MS Office and similar keyboards");
62
63static int atkbd_extra;
64module_param_named(extra, atkbd_extra, bool, 0);
65MODULE_PARM_DESC(extra, "Enable extra LEDs and keys on IBM RapidAcces, EzKey and similar keyboards");
66
1da177e4
LT		 67/*
68 * Scancode to keycode tables. These are just the default setting, and
69 * are loadable via an userland utility.
70 */
71
72static unsigned char atkbd_set2_keycode[512] = {
73
74#ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES
75
76/* XXX: need a more general approach */
77
78#include "hpps2atkbd.h" /* include the keyboard scancodes */
79
80#else
81 0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117,
82 0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0,
83 0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183,
84 0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185,
85 0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0,
86 0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85,
87 0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0,
88 82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99,
89
90 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
91 217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125,
92 173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127,
72a42f24 93 159, 0,115, 0,164, 0, 0,116,158, 0,172,166, 0, 0, 0,142,
1da177e4
LT		 94 157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0,
95 226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0,
96 0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112,
97 110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0,
98
99 0, 0, 0, 65, 99,
100#endif
101};
102
103static unsigned char atkbd_set3_keycode[512] = {
104
105 0, 0, 0, 0, 0, 0, 0, 59, 1,138,128,129,130, 15, 41, 60,
106 131, 29, 42, 86, 58, 16, 2, 61,133, 56, 44, 31, 30, 17, 3, 62,
107 134, 46, 45, 32, 18, 5, 4, 63,135, 57, 47, 33, 20, 19, 6, 64,
108 136, 49, 48, 35, 34, 21, 7, 65,137,100, 50, 36, 22, 8, 9, 66,
109 125, 51, 37, 23, 24, 11, 10, 67,126, 52, 53, 38, 39, 25, 12, 68,
110 113,114, 40, 43, 26, 13, 87, 99, 97, 54, 28, 27, 43, 43, 88, 70,
111 108,105,119,103,111,107, 14,110, 0, 79,106, 75, 71,109,102,104,
112 82, 83, 80, 76, 77, 72, 69, 98, 0, 96, 81, 0, 78, 73, 55,183,
113
114 184,185,186,187, 74, 94, 92, 93, 0, 0, 0,125,126,127,112, 0,
72a42f24 115 0,139,172,163,165,115,152,172,166,140,160,154,113,114,167,168,
1da177e4
LT		 116 148,149,147,140
117};
118
119static unsigned char atkbd_unxlate_table[128] = {
120 0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13,
121 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27,
122 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42,
123 50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3,
124 11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105,
125 114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63,
126 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111,
127 19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110
128};
129
130#define ATKBD_CMD_SETLEDS 0x10ed
131#define ATKBD_CMD_GSCANSET 0x11f0
132#define ATKBD_CMD_SSCANSET 0x10f0
133#define ATKBD_CMD_GETID 0x02f2
134#define ATKBD_CMD_SETREP 0x10f3
135#define ATKBD_CMD_ENABLE 0x00f4
136#define ATKBD_CMD_RESET_DIS 0x00f5
137#define ATKBD_CMD_SETALL_MBR 0x00fa
138#define ATKBD_CMD_RESET_BAT 0x02ff
139#define ATKBD_CMD_RESEND 0x00fe
140#define ATKBD_CMD_EX_ENABLE 0x10ea
141#define ATKBD_CMD_EX_SETLEDS 0x20eb
142#define ATKBD_CMD_OK_GETID 0x02e8
143
144#define ATKBD_RET_ACK 0xfa
145#define ATKBD_RET_NAK 0xfe
146#define ATKBD_RET_BAT 0xaa
147#define ATKBD_RET_EMUL0 0xe0
148#define ATKBD_RET_EMUL1 0xe1
149#define ATKBD_RET_RELEASE 0xf0
0ae051a1
DT		 150#define ATKBD_RET_HANJA 0xf1
151#define ATKBD_RET_HANGEUL 0xf2
1da177e4
LT		 152#define ATKBD_RET_ERR 0xff
153
154#define ATKBD_KEY_UNKNOWN 0
155#define ATKBD_KEY_NULL 255
156
157#define ATKBD_SCR_1 254
158#define ATKBD_SCR_2 253
159#define ATKBD_SCR_4 252
160#define ATKBD_SCR_8 251
161#define ATKBD_SCR_CLICK 250
162#define ATKBD_SCR_LEFT 249
163#define ATKBD_SCR_RIGHT 248
164
165#define ATKBD_SPECIAL 248
166
0d4c8597
DT		 167#define ATKBD_LED_EVENT_BIT 0
168#define ATKBD_REP_EVENT_BIT 1
169
0ae051a1
DT		 170#define ATKBD_XL_ERR 0x01
171#define ATKBD_XL_BAT 0x02
172#define ATKBD_XL_ACK 0x04
173#define ATKBD_XL_NAK 0x08
174#define ATKBD_XL_HANGEUL 0x10
175#define ATKBD_XL_HANJA 0x20
176
1da177e4
LT		 177static struct {
178 unsigned char keycode;
179 unsigned char set2;
180} atkbd_scroll_keys[] = {
181 { ATKBD_SCR_1, 0xc5 },
5212dd58
VP		 182 { ATKBD_SCR_2, 0x9d },
183 { ATKBD_SCR_4, 0xa4 },
184 { ATKBD_SCR_8, 0x9b },
1da177e4
LT		 185 { ATKBD_SCR_CLICK, 0xe0 },
186 { ATKBD_SCR_LEFT, 0xcb },
187 { ATKBD_SCR_RIGHT, 0xd2 },
188};
189
190/*
191 * The atkbd control structure
192 */
193
194struct atkbd {
195
3c42f0c3
DT		 196 struct ps2dev ps2dev;
197 struct input_dev *dev;
1da177e4
LT		 198
199 /* Written only during init */
200 char name[64];
201 char phys[32];
1da177e4
LT		 202
203 unsigned short id;
204 unsigned char keycode[512];
554101e3 205 DECLARE_BITMAP(force_release_mask, 512);
1da177e4
LT		 206 unsigned char set;
207 unsigned char translated;
208 unsigned char extra;
209 unsigned char write;
210 unsigned char softrepeat;
211 unsigned char softraw;
212 unsigned char scroll;
213 unsigned char enabled;
214
215 /* Accessed only from interrupt */
216 unsigned char emul;
217 unsigned char resend;
218 unsigned char release;
0ae051a1 219 unsigned long xl_bit;
1da177e4
LT		 220 unsigned int last;
221 unsigned long time;
86255d9d 222 unsigned long err_count;
0d4c8597 223
da4249c9
DT		 224 struct delayed_work event_work;
225 unsigned long event_jiffies;
33d3f07a 226 struct mutex event_mutex;
0d4c8597 227 unsigned long event_mask;
1da177e4
LT		 228};
229
554101e3
GN		 230/*
231 * System-specific ketymap fixup routine
232 */
233static void (*atkbd_platform_fixup)(struct atkbd *);
234
1da177e4
LT		 235static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
236 ssize_t (*handler)(struct atkbd *, char *));
237static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
238 ssize_t (*handler)(struct atkbd *, const char *, size_t));
239#define ATKBD_DEFINE_ATTR(_name) \
240static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
241static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \
86255d9d
DT		 242static ssize_t atkbd_do_show_##_name(struct device *d, \
243 struct device_attribute *attr, char *b) \
1da177e4
LT		 244{ \
245 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
246} \
86255d9d
DT		 247static ssize_t atkbd_do_set_##_name(struct device *d, \
248 struct device_attribute *attr, const char *b, size_t s) \
1da177e4
LT		 249{ \
250 return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name); \
251} \
d083e906 252static struct device_attribute atkbd_attr_##_name = \
1da177e4
LT		 253 __ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name);
254
255ATKBD_DEFINE_ATTR(extra);
256ATKBD_DEFINE_ATTR(scroll);
257ATKBD_DEFINE_ATTR(set);
258ATKBD_DEFINE_ATTR(softrepeat);
259ATKBD_DEFINE_ATTR(softraw);
260
86255d9d
DT		 261#define ATKBD_DEFINE_RO_ATTR(_name) \
262static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
263static ssize_t atkbd_do_show_##_name(struct device *d, \
264 struct device_attribute *attr, char *b) \
265{ \
266 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
267} \
268static struct device_attribute atkbd_attr_##_name = \
269 __ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL);
270
271ATKBD_DEFINE_RO_ATTR(err_count);
272
273static struct attribute *atkbd_attributes[] = {
274 &atkbd_attr_extra.attr,
275 &atkbd_attr_scroll.attr,
276 &atkbd_attr_set.attr,
277 &atkbd_attr_softrepeat.attr,
278 &atkbd_attr_softraw.attr,
279 &atkbd_attr_err_count.attr,
280 NULL
281};
282
283static struct attribute_group atkbd_attribute_group = {
284 .attrs = atkbd_attributes,
285};
286
0ae051a1
DT		 287static const unsigned int xl_table[] = {
288 ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK,
289 ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL,
290};
1da177e4 291
0ae051a1
DT		 292/*
293 * Checks if we should mangle the scancode to extract 'release' bit
294 * in translated mode.
295 */
296static int atkbd_need_xlate(unsigned long xl_bit, unsigned char code)
1da177e4 297{
0ae051a1
DT		 298 int i;
299
300 if (code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1)
301 return 0;
302
303 for (i = 0; i < ARRAY_SIZE(xl_table); i++)
304 if (code == xl_table[i])
305 return test_bit(i, &xl_bit);
306
307 return 1;
308}
309
310/*
311 * Calculates new value of xl_bit so the driver can distinguish
312 * between make/break pair of scancodes for select keys and PS/2
313 * protocol responses.
314 */
315static void atkbd_calculate_xl_bit(struct atkbd *atkbd, unsigned char code)
316{
317 int i;
318
319 for (i = 0; i < ARRAY_SIZE(xl_table); i++) {
320 if (!((code ^ xl_table[i]) & 0x7f)) {
321 if (code & 0x80)
322 __clear_bit(i, &atkbd->xl_bit);
323 else
324 __set_bit(i, &atkbd->xl_bit);
325 break;
326 }
327 }
328}
329
330/*
331 * Encode the scancode, 0xe0 prefix, and high bit into a single integer,
332 * keeping kernel 2.4 compatibility for set 2
333 */
334static unsigned int atkbd_compat_scancode(struct atkbd *atkbd, unsigned int code)
335{
336 if (atkbd->set == 3) {
337 if (atkbd->emul == 1)
338 code |= 0x100;
339 } else {
340 code = (code & 0x7f) | ((code & 0x80) << 1);
341 if (atkbd->emul == 1)
342 code |= 0x80;
343 }
344
345 return code;
1da177e4
LT		 346}
347
348/*
349 * atkbd_interrupt(). Here takes place processing of data received from
350 * the keyboard into events.
351 */
352
353static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data,
7d12e780 354 unsigned int flags)
1da177e4
LT		 355{
356 struct atkbd *atkbd = serio_get_drvdata(serio);
0ae051a1 357 struct input_dev *dev = atkbd->dev;
1da177e4 358 unsigned int code = data;
554101e3 359 int scroll = 0, hscroll = 0, click = -1;
1da177e4 360 int value;
0ae051a1 361 unsigned char keycode;
1da177e4
LT		 362
363#ifdef ATKBD_DEBUG
364 printk(KERN_DEBUG "atkbd.c: Received %02x flags %02x\n", data, flags);
365#endif
366
367#if !defined(__i386__) && !defined (__x86_64__)
368 if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) {
369 printk(KERN_WARNING "atkbd.c: frame/parity error: %02x\n", flags);
370 serio_write(serio, ATKBD_CMD_RESEND);
371 atkbd->resend = 1;
372 goto out;
373 }
374
375 if (!flags && data == ATKBD_RET_ACK)
376 atkbd->resend = 0;
377#endif
378
379 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_ACK))
380 if (ps2_handle_ack(&atkbd->ps2dev, data))
381 goto out;
382
383 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_CMD))
384 if (ps2_handle_response(&atkbd->ps2dev, data))
385 goto out;
386
387 if (!atkbd->enabled)
388 goto out;
389
0ae051a1 390 input_event(dev, EV_MSC, MSC_RAW, code);
1da177e4
LT		 391
392 if (atkbd->translated) {
393
0ae051a1 394 if (atkbd->emul || atkbd_need_xlate(atkbd->xl_bit, code)) {
1da177e4
LT		 395 atkbd->release = code >> 7;
396 code &= 0x7f;
397 }
398
0ae051a1
DT		 399 if (!atkbd->emul)
400 atkbd_calculate_xl_bit(atkbd, data);
1da177e4
LT		 401 }
402
403 switch (code) {
404 case ATKBD_RET_BAT:
405 atkbd->enabled = 0;
dbc26344 406 serio_reconnect(atkbd->ps2dev.serio);
1da177e4
LT		 407 goto out;
408 case ATKBD_RET_EMUL0:
409 atkbd->emul = 1;
410 goto out;
411 case ATKBD_RET_EMUL1:
412 atkbd->emul = 2;
413 goto out;
414 case ATKBD_RET_RELEASE:
415 atkbd->release = 1;
416 goto out;
0ae051a1
DT		 417 case ATKBD_RET_ACK:
418 case ATKBD_RET_NAK:
9f7a60d6
QY		 419 if (printk_ratelimit())
420 printk(KERN_WARNING "atkbd.c: Spurious %s on %s. "
421 "Some program might be trying access hardware directly.\n",
422 data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys);
1da177e4 423 goto out;
1da177e4 424 case ATKBD_RET_ERR:
86255d9d
DT		 425 atkbd->err_count++;
426#ifdef ATKBD_DEBUG
1da177e4 427 printk(KERN_DEBUG "atkbd.c: Keyboard on %s reports too many keys pressed.\n", serio->phys);
86255d9d 428#endif
1da177e4
LT		 429 goto out;
430 }
431
0ae051a1
DT		 432 code = atkbd_compat_scancode(atkbd, code);
433
434 if (atkbd->emul && --atkbd->emul)
435 goto out;
436
437 keycode = atkbd->keycode[code];
1da177e4 438
0ae051a1
DT		 439 if (keycode != ATKBD_KEY_NULL)
440 input_event(dev, EV_MSC, MSC_SCAN, code);
1da177e4 441
0ae051a1 442 switch (keycode) {
1da177e4
LT		 443 case ATKBD_KEY_NULL:
444 break;
445 case ATKBD_KEY_UNKNOWN:
0ae051a1
DT		 446 printk(KERN_WARNING
447 "atkbd.c: Unknown key %s (%s set %d, code %#x on %s).\n",
448 atkbd->release ? "released" : "pressed",
449 atkbd->translated ? "translated" : "raw",
450 atkbd->set, code, serio->phys);
451 printk(KERN_WARNING
452 "atkbd.c: Use 'setkeycodes %s%02x <keycode>' to make it known.\n",
453 code & 0x80 ? "e0" : "", code & 0x7f);
454 input_sync(dev);
1da177e4
LT		 455 break;
456 case ATKBD_SCR_1:
457 scroll = 1 - atkbd->release * 2;
458 break;
459 case ATKBD_SCR_2:
460 scroll = 2 - atkbd->release * 4;
461 break;
462 case ATKBD_SCR_4:
463 scroll = 4 - atkbd->release * 8;
464 break;
465 case ATKBD_SCR_8:
466 scroll = 8 - atkbd->release * 16;
467 break;
468 case ATKBD_SCR_CLICK:
469 click = !atkbd->release;
470 break;
471 case ATKBD_SCR_LEFT:
472 hscroll = -1;
473 break;
474 case ATKBD_SCR_RIGHT:
475 hscroll = 1;
476 break;
477 default:
0ae051a1
DT		 478 if (atkbd->release) {
479 value = 0;
480 atkbd->last = 0;
481 } else if (!atkbd->softrepeat && test_bit(keycode, dev->key)) {
482 /* Workaround Toshiba laptop multiple keypress */
483 value = time_before(jiffies, atkbd->time) && atkbd->last == code ? 1 : 2;
484 } else {
485 value = 1;
486 atkbd->last = code;
487 atkbd->time = jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]) / 2;
1da177e4
LT		 488 }
489
f8b4c46c 490 input_event(dev, EV_KEY, keycode, value);
0ae051a1
DT		 491 input_sync(dev);
492
554101e3 493 if (value && test_bit(code, atkbd->force_release_mask)) {
0ae051a1
DT		 494 input_report_key(dev, keycode, 0);
495 input_sync(dev);
496 }
1da177e4
LT		 497 }
498
499 if (atkbd->scroll) {
1da177e4 500 if (click != -1)
0ae051a1
DT		 501 input_report_key(dev, BTN_MIDDLE, click);
502 input_report_rel(dev, REL_WHEEL, scroll);
503 input_report_rel(dev, REL_HWHEEL, hscroll);
504 input_sync(dev);
1da177e4
LT		 505 }
506
507 atkbd->release = 0;
508out:
509 return IRQ_HANDLED;
510}
511
3d0f0fa0 512static int atkbd_set_repeat_rate(struct atkbd *atkbd)
1da177e4 513{
1da177e4
LT		 514 const short period[32] =
515 { 33, 37, 42, 46, 50, 54, 58, 63, 67, 75, 83, 92, 100, 109, 116, 125,
516 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 };
517 const short delay[4] =
518 { 250, 500, 750, 1000 };
0d4c8597 519
3d0f0fa0
DT		 520 struct input_dev *dev = atkbd->dev;
521 unsigned char param;
522 int i = 0, j = 0;
523
524 while (i < ARRAY_SIZE(period) - 1 && period[i] < dev->rep[REP_PERIOD])
525 i++;
526 dev->rep[REP_PERIOD] = period[i];
527
8ea371fb 528 while (j < ARRAY_SIZE(delay) - 1 && delay[j] < dev->rep[REP_DELAY])
3d0f0fa0
DT		 529 j++;
530 dev->rep[REP_DELAY] = delay[j];
531
532 param = i | (j << 5);
533 return ps2_command(&atkbd->ps2dev, &param, ATKBD_CMD_SETREP);
534}
535
536static int atkbd_set_leds(struct atkbd *atkbd)
537{
0d4c8597 538 struct input_dev *dev = atkbd->dev;
1da177e4 539 unsigned char param[2];
1da177e4 540
3d0f0fa0
DT		 541 param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0)
542 | (test_bit(LED_NUML, dev->led) ? 2 : 0)
543 | (test_bit(LED_CAPSL, dev->led) ? 4 : 0);
544 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS))
545 return -1;
0d4c8597 546
3d0f0fa0
DT		 547 if (atkbd->extra) {
548 param[0] = 0;
549 param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0)
550 | (test_bit(LED_SLEEP, dev->led) ? 0x02 : 0)
551 | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0)
552 | (test_bit(LED_MISC, dev->led) ? 0x10 : 0)
553 | (test_bit(LED_MUTE, dev->led) ? 0x20 : 0);
554 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS))
555 return -1;
0d4c8597
DT		 556 }
557
3d0f0fa0
DT		 558 return 0;
559}
560
561/*
562 * atkbd_event_work() is used to complete processing of events that
563 * can not be processed by input_event() which is often called from
564 * interrupt context.
565 */
566
65f27f38 567static void atkbd_event_work(struct work_struct *work)
3d0f0fa0 568{
da4249c9 569 struct atkbd *atkbd = container_of(work, struct atkbd, event_work.work);
3d0f0fa0
DT		 570
571 mutex_lock(&atkbd->event_mutex);
572
573 if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask))
574 atkbd_set_leds(atkbd);
575
576 if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask))
577 atkbd_set_repeat_rate(atkbd);
0d4c8597 578
33d3f07a 579 mutex_unlock(&atkbd->event_mutex);
0d4c8597
DT		 580}
581
da4249c9
DT		 582/*
583 * Schedule switch for execution. We need to throttle requests,
584 * otherwise keyboard may become unresponsive.
585 */
586static void atkbd_schedule_event_work(struct atkbd *atkbd, int event_bit)
587{
588 unsigned long delay = msecs_to_jiffies(50);
589
590 if (time_after(jiffies, atkbd->event_jiffies + delay))
591 delay = 0;
592
593 atkbd->event_jiffies = jiffies;
594 set_bit(event_bit, &atkbd->event_mask);
595 wmb();
596 schedule_delayed_work(&atkbd->event_work, delay);
597}
598
0d4c8597
DT		 599/*
600 * Event callback from the input module. Events that change the state of
601 * the hardware are processed here. If action can not be performed in
602 * interrupt context it is offloaded to atkbd_event_work.
603 */
604
da4249c9
DT		 605static int atkbd_event(struct input_dev *dev,
606 unsigned int type, unsigned int code, int value)
0d4c8597 607{
b356872f 608 struct atkbd *atkbd = input_get_drvdata(dev);
0d4c8597 609
1da177e4
LT		 610 if (!atkbd->write)
611 return -1;
612
613 switch (type) {
614
615 case EV_LED:
da4249c9 616 atkbd_schedule_event_work(atkbd, ATKBD_LED_EVENT_BIT);
1da177e4
LT		 617 return 0;
618
1da177e4 619 case EV_REP:
da4249c9
DT		 620 if (!atkbd->softrepeat)
621 atkbd_schedule_event_work(atkbd, ATKBD_REP_EVENT_BIT);
1da177e4
LT		 622 return 0;
623 }
624
625 return -1;
626}
627
628/*
629 * atkbd_enable() signals that interrupt handler is allowed to
630 * generate input events.
631 */
632
633static inline void atkbd_enable(struct atkbd *atkbd)
634{
635 serio_pause_rx(atkbd->ps2dev.serio);
636 atkbd->enabled = 1;
637 serio_continue_rx(atkbd->ps2dev.serio);
638}
639
640/*
641 * atkbd_disable() tells input handler that all incoming data except
642 * for ACKs and command response should be dropped.
643 */
644
645static inline void atkbd_disable(struct atkbd *atkbd)
646{
647 serio_pause_rx(atkbd->ps2dev.serio);
648 atkbd->enabled = 0;
649 serio_continue_rx(atkbd->ps2dev.serio);
650}
651
652/*
653 * atkbd_probe() probes for an AT keyboard on a serio port.
654 */
655
656static int atkbd_probe(struct atkbd *atkbd)
657{
658 struct ps2dev *ps2dev = &atkbd->ps2dev;
659 unsigned char param[2];
660
661/*
662 * Some systems, where the bit-twiddling when testing the io-lines of the
663 * controller may confuse the keyboard need a full reset of the keyboard. On
664 * these systems the BIOS also usually doesn't do it for us.
665 */
666
667 if (atkbd_reset)
668 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT))
669 printk(KERN_WARNING "atkbd.c: keyboard reset failed on %s\n", ps2dev->serio->phys);
670
671/*
672 * Then we check the keyboard ID. We should get 0xab83 under normal conditions.
673 * Some keyboards report different values, but the first byte is always 0xab or
674 * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this
675 * should make sure we don't try to set the LEDs on it.
676 */
677
678 param[0] = param[1] = 0xa5; /* initialize with invalid values */
679 if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) {
680
681/*
682 * If the get ID command failed, we check if we can at least set the LEDs on
683 * the keyboard. This should work on every keyboard out there. It also turns
684 * the LEDs off, which we want anyway.
685 */
686 param[0] = 0;
687 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
688 return -1;
689 atkbd->id = 0xabba;
690 return 0;
691 }
692
9807879b 693 if (!ps2_is_keyboard_id(param[0]))
1da177e4
LT		 694 return -1;
695
696 atkbd->id = (param[0] << 8) | param[1];
697
698 if (atkbd->id == 0xaca1 && atkbd->translated) {
699 printk(KERN_ERR "atkbd.c: NCD terminal keyboards are only supported on non-translating\n");
700 printk(KERN_ERR "atkbd.c: controllers. Use i8042.direct=1 to disable translation.\n");
701 return -1;
702 }
703
704 return 0;
705}
706
707/*
708 * atkbd_select_set checks if a keyboard has a working Set 3 support, and
709 * sets it into that. Unfortunately there are keyboards that can be switched
710 * to Set 3, but don't work well in that (BTC Multimedia ...)
711 */
712
713static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra)
714{
715 struct ps2dev *ps2dev = &atkbd->ps2dev;
716 unsigned char param[2];
717
718 atkbd->extra = 0;
719/*
720 * For known special keyboards we can go ahead and set the correct set.
721 * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and
722 * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards.
723 */
724
725 if (atkbd->translated)
726 return 2;
727
728 if (atkbd->id == 0xaca1) {
729 param[0] = 3;
730 ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET);
731 return 3;
732 }
733
734 if (allow_extra) {
735 param[0] = 0x71;
736 if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) {
737 atkbd->extra = 1;
738 return 2;
739 }
740 }
741
742 if (target_set != 3)
743 return 2;
744
745 if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) {
746 atkbd->id = param[0] << 8 | param[1];
747 return 2;
748 }
749
750 param[0] = 3;
751 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
752 return 2;
753
754 param[0] = 0;
755 if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET))
756 return 2;
757
758 if (param[0] != 3) {
759 param[0] = 2;
760 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
761 return 2;
762 }
763
764 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR);
765
766 return 3;
767}
768
769static int atkbd_activate(struct atkbd *atkbd)
770{
771 struct ps2dev *ps2dev = &atkbd->ps2dev;
772 unsigned char param[1];
773
774/*
775 * Set the LEDs to a defined state.
776 */
777
778 param[0] = 0;
779 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
780 return -1;
781
782/*
783 * Set autorepeat to fastest possible.
784 */
785
786 param[0] = 0;
787 if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP))
788 return -1;
789
790/*
791 * Enable the keyboard to receive keystrokes.
792 */
793
794 if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) {
795 printk(KERN_ERR "atkbd.c: Failed to enable keyboard on %s\n",
796 ps2dev->serio->phys);
797 return -1;
798 }
799
800 return 0;
801}
802
803/*
804 * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a
805 * reboot.
806 */
807
808static void atkbd_cleanup(struct serio *serio)
809{
810 struct atkbd *atkbd = serio_get_drvdata(serio);
811 ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_BAT);
812}
813
814
815/*
816 * atkbd_disconnect() closes and frees.
817 */
818
819static void atkbd_disconnect(struct serio *serio)
820{
821 struct atkbd *atkbd = serio_get_drvdata(serio);
822
823 atkbd_disable(atkbd);
824
825 /* make sure we don't have a command in flight */
fbd568a3 826 synchronize_sched(); /* Allow atkbd_interrupt()s to complete. */
1da177e4
LT		 827 flush_scheduled_work();
828
86255d9d 829 sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
3c42f0c3 830 input_unregister_device(atkbd->dev);
1da177e4
LT		 831 serio_close(serio);
832 serio_set_drvdata(serio, NULL);
833 kfree(atkbd);
834}
835
554101e3
GN		 836/*
837 * Most special keys (Fn+F?) on Dell Latitudes do not generate release
838 * events so we have to do it ourselves.
839 */
840static void atkbd_latitude_keymap_fixup(struct atkbd *atkbd)
841{
842 const unsigned int forced_release_keys[] = {
843 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8f, 0x93,
844 };
845 int i;
846
847 if (atkbd->set == 2)
848 for (i = 0; i < ARRAY_SIZE(forced_release_keys); i++)
849 __set_bit(forced_release_keys[i],
850 atkbd->force_release_mask);
851}
1da177e4
LT		 852
853/*
3c42f0c3 854 * atkbd_set_keycode_table() initializes keyboard's keycode table
1da177e4
LT		 855 * according to the selected scancode set
856 */
857
858static void atkbd_set_keycode_table(struct atkbd *atkbd)
859{
554101e3 860 unsigned int scancode;
1da177e4
LT		 861 int i, j;
862
863 memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
554101e3 864 bitmap_zero(atkbd->force_release_mask, 512);
1da177e4
LT		 865
866 if (atkbd->translated) {
867 for (i = 0; i < 128; i++) {
554101e3
GN		 868 scancode = atkbd_unxlate_table[i];
869 atkbd->keycode[i] = atkbd_set2_keycode[scancode];
870 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80];
1da177e4
LT		 871 if (atkbd->scroll)
872 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
554101e3 873 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2)
1da177e4
LT		 874 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
875 }
876 } else if (atkbd->set == 3) {
877 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
878 } else {
879 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
880
881 if (atkbd->scroll)
554101e3
GN		 882 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) {
883 scancode = atkbd_scroll_keys[i].set2;
884 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode;
885 }
1da177e4 886 }
0ae051a1 887
554101e3
GN		 888/*
889 * HANGEUL and HANJA keys do not send release events so we need to
890 * generate such events ourselves
891 */
892 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL);
893 atkbd->keycode[scancode] = KEY_HANGEUL;
894 __set_bit(scancode, atkbd->force_release_mask);
895
896 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA);
897 atkbd->keycode[scancode] = KEY_HANJA;
898 __set_bit(scancode, atkbd->force_release_mask);
899
900/*
901 * Perform additional fixups
902 */
903 if (atkbd_platform_fixup)
904 atkbd_platform_fixup(atkbd);
1da177e4
LT		 905}
906
907/*
908 * atkbd_set_device_attrs() sets up keyboard's input device structure
909 */
910
911static void atkbd_set_device_attrs(struct atkbd *atkbd)
912{
3c42f0c3 913 struct input_dev *input_dev = atkbd->dev;
1da177e4
LT		 914 int i;
915
3c42f0c3 916 if (atkbd->extra)
ea08c6fa
DT		 917 snprintf(atkbd->name, sizeof(atkbd->name),
918 "AT Set 2 Extra keyboard");
3c42f0c3 919 else
ea08c6fa
DT		 920 snprintf(atkbd->name, sizeof(atkbd->name),
921 "AT %s Set %d keyboard",
922 atkbd->translated ? "Translated" : "Raw", atkbd->set);
1da177e4 923
ea08c6fa
DT		 924 snprintf(atkbd->phys, sizeof(atkbd->phys),
925 "%s/input0", atkbd->ps2dev.serio->phys);
1da177e4 926
3c42f0c3
DT		 927 input_dev->name = atkbd->name;
928 input_dev->phys = atkbd->phys;
929 input_dev->id.bustype = BUS_I8042;
930 input_dev->id.vendor = 0x0001;
931 input_dev->id.product = atkbd->translated ? 1 : atkbd->set;
932 input_dev->id.version = atkbd->id;
933 input_dev->event = atkbd_event;
469ba4df 934 input_dev->dev.parent = &atkbd->ps2dev.serio->dev;
1da177e4 935
b356872f
DT		 936 input_set_drvdata(input_dev, atkbd);
937
7b19ada2
JS		 938 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
939 BIT_MASK(EV_MSC);
1da177e4
LT		 940
941 if (atkbd->write) {
7b19ada2
JS		 942 input_dev->evbit[0] |= BIT_MASK(EV_LED);
943 input_dev->ledbit[0] = BIT_MASK(LED_NUML) |
944 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL);
1da177e4
LT		 945 }
946
947 if (atkbd->extra)
7b19ada2
JS		 948 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) |
949 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) |
950 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC);
1da177e4
LT		 951
952 if (!atkbd->softrepeat) {
3c42f0c3
DT		 953 input_dev->rep[REP_DELAY] = 250;
954 input_dev->rep[REP_PERIOD] = 33;
1da177e4
LT		 955 }
956
7b19ada2
JS		 957 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) :
958 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN);
1da177e4
LT		 959
960 if (atkbd->scroll) {
7b19ada2
JS		 961 input_dev->evbit[0] |= BIT_MASK(EV_REL);
962 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) |
963 BIT_MASK(REL_HWHEEL);
3c42f0c3 964 set_bit(BTN_MIDDLE, input_dev->keybit);
1da177e4
LT		 965 }
966
3c42f0c3
DT		 967 input_dev->keycode = atkbd->keycode;
968 input_dev->keycodesize = sizeof(unsigned char);
969 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
1da177e4
LT		 970
971 for (i = 0; i < 512; i++)
972 if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL)
3c42f0c3 973 set_bit(atkbd->keycode[i], input_dev->keybit);
1da177e4
LT		 974}
975
976/*
977 * atkbd_connect() is called when the serio module finds an interface
978 * that isn't handled yet by an appropriate device driver. We check if
979 * there is an AT keyboard out there and if yes, we register ourselves
980 * to the input module.
981 */
982
983static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
984{
985 struct atkbd *atkbd;
3c42f0c3
DT		 986 struct input_dev *dev;
987 int err = -ENOMEM;
1da177e4 988
3c42f0c3
DT		 989 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL);
990 dev = input_allocate_device();
991 if (!atkbd || !dev)
2b03b60e 992 goto fail1;
1da177e4 993
3c42f0c3 994 atkbd->dev = dev;
1da177e4 995 ps2_init(&atkbd->ps2dev, serio);
da4249c9 996 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work);
33d3f07a 997 mutex_init(&atkbd->event_mutex);
1da177e4
LT		 998
999 switch (serio->id.type) {
1000
1001 case SERIO_8042_XL:
1002 atkbd->translated = 1;
1003 case SERIO_8042:
1004 if (serio->write)
1005 atkbd->write = 1;
1006 break;
1007 }
1008
1009 atkbd->softraw = atkbd_softraw;
1010 atkbd->softrepeat = atkbd_softrepeat;
1011 atkbd->scroll = atkbd_scroll;
1012
1da177e4
LT		 1013 if (atkbd->softrepeat)
1014 atkbd->softraw = 1;
1015
1016 serio_set_drvdata(serio, atkbd);
1017
1018 err = serio_open(serio, drv);
3c42f0c3 1019 if (err)
2b03b60e 1020 goto fail2;
1da177e4
LT		 1021
1022 if (atkbd->write) {
1023
1024 if (atkbd_probe(atkbd)) {
3c42f0c3 1025 err = -ENODEV;
2b03b60e 1026 goto fail3;
1da177e4
LT		 1027 }
1028
1029 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
1030 atkbd_activate(atkbd);
1031
1032 } else {
1033 atkbd->set = 2;
1034 atkbd->id = 0xab00;
1035 }
1036
1da177e4
LT		 1037 atkbd_set_keycode_table(atkbd);
1038 atkbd_set_device_attrs(atkbd);
1039
2b03b60e
DT		 1040 err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group);
1041 if (err)
1042 goto fail3;
1da177e4
LT		 1043
1044 atkbd_enable(atkbd);
1045
2b03b60e
DT		 1046 err = input_register_device(atkbd->dev);
1047 if (err)
1048 goto fail4;
1da177e4
LT		 1049
1050 return 0;
3c42f0c3 1051
2b03b60e
DT		 1052 fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
1053 fail3: serio_close(serio);
1054 fail2: serio_set_drvdata(serio, NULL);
1055 fail1: input_free_device(dev);
3c42f0c3
DT		 1056 kfree(atkbd);
1057 return err;
1da177e4
LT		 1058}
1059
1060/*
1061 * atkbd_reconnect() tries to restore keyboard into a sane state and is
1062 * most likely called on resume.
1063 */
1064
1065static int atkbd_reconnect(struct serio *serio)
1066{
1067 struct atkbd *atkbd = serio_get_drvdata(serio);
1068 struct serio_driver *drv = serio->drv;
1da177e4
LT		 1069
1070 if (!atkbd || !drv) {
1071 printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n");
1072 return -1;
1073 }
1074
1075 atkbd_disable(atkbd);
1076
1077 if (atkbd->write) {
1da177e4
LT		 1078 if (atkbd_probe(atkbd))
1079 return -1;
1080 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
1081 return -1;
1082
1083 atkbd_activate(atkbd);
1084
3d0f0fa0
DT		 1085/*
1086 * Restore repeat rate and LEDs (that were reset by atkbd_activate)
1087 * to pre-resume state
1088 */
1089 if (!atkbd->softrepeat)
1090 atkbd_set_repeat_rate(atkbd);
1091 atkbd_set_leds(atkbd);
1da177e4
LT		 1092 }
1093
1094 atkbd_enable(atkbd);
1095
1096 return 0;
1097}
1098
1099static struct serio_device_id atkbd_serio_ids[] = {
1100 {
1101 .type = SERIO_8042,
1102 .proto = SERIO_ANY,
1103 .id = SERIO_ANY,
1104 .extra = SERIO_ANY,
1105 },
1106 {
1107 .type = SERIO_8042_XL,
1108 .proto = SERIO_ANY,
1109 .id = SERIO_ANY,
1110 .extra = SERIO_ANY,
1111 },
1112 {
1113 .type = SERIO_RS232,
1114 .proto = SERIO_PS2SER,
1115 .id = SERIO_ANY,
1116 .extra = SERIO_ANY,
1117 },
1118 { 0 }
1119};
1120
1121MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
1122
1123static struct serio_driver atkbd_drv = {
1124 .driver = {
1125 .name = "atkbd",
1126 },
1127 .description = DRIVER_DESC,
1128 .id_table = atkbd_serio_ids,
1129 .interrupt = atkbd_interrupt,
1130 .connect = atkbd_connect,
1131 .reconnect = atkbd_reconnect,
1132 .disconnect = atkbd_disconnect,
1133 .cleanup = atkbd_cleanup,
1134};
1135
1136static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
1137 ssize_t (*handler)(struct atkbd *, char *))
1138{
1139 struct serio *serio = to_serio_port(dev);
1140 int retval;
1141
1142 retval = serio_pin_driver(serio);
1143 if (retval)
1144 return retval;
1145
1146 if (serio->drv != &atkbd_drv) {
1147 retval = -ENODEV;
1148 goto out;
1149 }
1150
1151 retval = handler((struct atkbd *)serio_get_drvdata(serio), buf);
1152
1153out:
1154 serio_unpin_driver(serio);
1155 return retval;
1156}
1157
1158static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
1159 ssize_t (*handler)(struct atkbd *, const char *, size_t))
1160{
1161 struct serio *serio = to_serio_port(dev);
1162 struct atkbd *atkbd;
1163 int retval;
1164
1165 retval = serio_pin_driver(serio);
1166 if (retval)
1167 return retval;
1168
1169 if (serio->drv != &atkbd_drv) {
1170 retval = -ENODEV;
1171 goto out;
1172 }
1173
1174 atkbd = serio_get_drvdata(serio);
1175 atkbd_disable(atkbd);
1176 retval = handler(atkbd, buf, count);
1177 atkbd_enable(atkbd);
1178
1179out:
1180 serio_unpin_driver(serio);
1181 return retval;
1182}
1183
1184static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
1185{
1186 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
1187}
1188
1189static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
1190{
2b03b60e 1191 struct input_dev *old_dev, *new_dev;
1da177e4
LT		 1192 unsigned long value;
1193 char *rest;
2b03b60e
DT		 1194 int err;
1195 unsigned char old_extra, old_set;
1da177e4
LT		 1196
1197 if (!atkbd->write)
1198 return -EIO;
1199
1200 value = simple_strtoul(buf, &rest, 10);
1201 if (*rest || value > 1)
1202 return -EINVAL;
1203
1204 if (atkbd->extra != value) {
3c42f0c3
DT		 1205 /*
1206 * Since device's properties will change we need to
2b03b60e
DT		 1207 * unregister old device. But allocate and register
1208 * new one first to make sure we have it.
3c42f0c3 1209 */
2b03b60e
DT		 1210 old_dev = atkbd->dev;
1211 old_extra = atkbd->extra;
1212 old_set = atkbd->set;
1213
1214 new_dev = input_allocate_device();
1215 if (!new_dev)
3c42f0c3 1216 return -ENOMEM;
2b03b60e 1217
3c42f0c3 1218 atkbd->dev = new_dev;
1da177e4
LT		 1219 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
1220 atkbd_activate(atkbd);
2b03b60e 1221 atkbd_set_keycode_table(atkbd);
1da177e4 1222 atkbd_set_device_attrs(atkbd);
2b03b60e
DT		 1223
1224 err = input_register_device(atkbd->dev);
1225 if (err) {
1226 input_free_device(new_dev);
1227
1228 atkbd->dev = old_dev;
1229 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1230 atkbd_set_keycode_table(atkbd);
1231 atkbd_set_device_attrs(atkbd);
1232
1233 return err;
1234 }
1235 input_unregister_device(old_dev);
1236
1da177e4
LT		 1237 }
1238 return count;
1239}
1240
1241static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
1242{
1243 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
1244}
1245
1246static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
1247{
2b03b60e 1248 struct input_dev *old_dev, *new_dev;
1da177e4
LT		 1249 unsigned long value;
1250 char *rest;
2b03b60e
DT		 1251 int err;
1252 unsigned char old_scroll;
1da177e4
LT		 1253
1254 value = simple_strtoul(buf, &rest, 10);
1255 if (*rest || value > 1)
1256 return -EINVAL;
1257
1258 if (atkbd->scroll != value) {
2b03b60e
DT		 1259 old_dev = atkbd->dev;
1260 old_scroll = atkbd->scroll;
1261
1262 new_dev = input_allocate_device();
1263 if (!new_dev)
3c42f0c3 1264 return -ENOMEM;
2b03b60e 1265
3c42f0c3 1266 atkbd->dev = new_dev;
1da177e4
LT		 1267 atkbd->scroll = value;
1268 atkbd_set_keycode_table(atkbd);
1269 atkbd_set_device_attrs(atkbd);
2b03b60e
DT		 1270
1271 err = input_register_device(atkbd->dev);
1272 if (err) {
1273 input_free_device(new_dev);
1274
1275 atkbd->scroll = old_scroll;
1276 atkbd->dev = old_dev;
1277 atkbd_set_keycode_table(atkbd);
1278 atkbd_set_device_attrs(atkbd);
1279
1280 return err;
1281 }
1282 input_unregister_device(old_dev);
1da177e4
LT		 1283 }
1284 return count;
1285}
1286
1287static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
1288{
1289 return sprintf(buf, "%d\n", atkbd->set);
1290}
1291
1292static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
1293{
2b03b60e 1294 struct input_dev *old_dev, *new_dev;
1da177e4
LT		 1295 unsigned long value;
1296 char *rest;
2b03b60e
DT		 1297 int err;
1298 unsigned char old_set, old_extra;
1da177e4
LT		 1299
1300 if (!atkbd->write)
1301 return -EIO;
1302
1303 value = simple_strtoul(buf, &rest, 10);
1304 if (*rest || (value != 2 && value != 3))
1305 return -EINVAL;
1306
1307 if (atkbd->set != value) {
2b03b60e
DT		 1308 old_dev = atkbd->dev;
1309 old_extra = atkbd->extra;
1310 old_set = atkbd->set;
1311
1312 new_dev = input_allocate_device();
1313 if (!new_dev)
3c42f0c3 1314 return -ENOMEM;
2b03b60e 1315
3c42f0c3 1316 atkbd->dev = new_dev;
1da177e4
LT		 1317 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra);
1318 atkbd_activate(atkbd);
1319 atkbd_set_keycode_table(atkbd);
1320 atkbd_set_device_attrs(atkbd);
2b03b60e
DT		 1321
1322 err = input_register_device(atkbd->dev);
1323 if (err) {
1324 input_free_device(new_dev);
1325
1326 atkbd->dev = old_dev;
1327 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1328 atkbd_set_keycode_table(atkbd);
1329 atkbd_set_device_attrs(atkbd);
1330
1331 return err;
1332 }
1333 input_unregister_device(old_dev);
1da177e4
LT		 1334 }
1335 return count;
1336}
1337
1338static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
1339{
1340 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
1341}
1342
1343static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
1344{
2b03b60e 1345 struct input_dev *old_dev, *new_dev;
1da177e4
LT		 1346 unsigned long value;
1347 char *rest;
2b03b60e
DT		 1348 int err;
1349 unsigned char old_softrepeat, old_softraw;
1da177e4
LT		 1350
1351 if (!atkbd->write)
1352 return -EIO;
1353
1354 value = simple_strtoul(buf, &rest, 10);
1355 if (*rest || value > 1)
1356 return -EINVAL;
1357
1358 if (atkbd->softrepeat != value) {
2b03b60e
DT		 1359 old_dev = atkbd->dev;
1360 old_softrepeat = atkbd->softrepeat;
1361 old_softraw = atkbd->softraw;
1362
1363 new_dev = input_allocate_device();
1364 if (!new_dev)
3c42f0c3 1365 return -ENOMEM;
2b03b60e 1366
3c42f0c3 1367 atkbd->dev = new_dev;
1da177e4
LT		 1368 atkbd->softrepeat = value;
1369 if (atkbd->softrepeat)
1370 atkbd->softraw = 1;
1371 atkbd_set_device_attrs(atkbd);
2b03b60e
DT		 1372
1373 err = input_register_device(atkbd->dev);
1374 if (err) {
1375 input_free_device(new_dev);
1376
1377 atkbd->dev = old_dev;
1378 atkbd->softrepeat = old_softrepeat;
1379 atkbd->softraw = old_softraw;
1380 atkbd_set_device_attrs(atkbd);
1381
1382 return err;
1383 }
1384 input_unregister_device(old_dev);
1da177e4 1385 }
1da177e4
LT		 1386 return count;
1387}
1388
1389
1390static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
1391{
1392 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
1393}
1394
1395static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
1396{
2b03b60e 1397 struct input_dev *old_dev, *new_dev;
1da177e4
LT		 1398 unsigned long value;
1399 char *rest;
2b03b60e
DT		 1400 int err;
1401 unsigned char old_softraw;
1da177e4
LT		 1402
1403 value = simple_strtoul(buf, &rest, 10);
1404 if (*rest || value > 1)
1405 return -EINVAL;
1406
1407 if (atkbd->softraw != value) {
2b03b60e
DT		 1408 old_dev = atkbd->dev;
1409 old_softraw = atkbd->softraw;
1410
1411 new_dev = input_allocate_device();
1412 if (!new_dev)
3c42f0c3 1413 return -ENOMEM;
2b03b60e 1414
3c42f0c3 1415 atkbd->dev = new_dev;
1da177e4
LT		 1416 atkbd->softraw = value;
1417 atkbd_set_device_attrs(atkbd);
2b03b60e
DT		 1418
1419 err = input_register_device(atkbd->dev);
1420 if (err) {
1421 input_free_device(new_dev);
1422
1423 atkbd->dev = old_dev;
1424 atkbd->softraw = old_softraw;
1425 atkbd_set_device_attrs(atkbd);
1426
1427 return err;
1428 }
1429 input_unregister_device(old_dev);
1da177e4
LT		 1430 }
1431 return count;
1432}
1433
86255d9d
DT		 1434static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
1435{
1436 return sprintf(buf, "%lu\n", atkbd->err_count);
1437}
1438
554101e3
GN		 1439static int __init atkbd_setup_fixup(const struct dmi_system_id *id)
1440{
1441 atkbd_platform_fixup = id->driver_data;
1442 return 0;
1443}
1444
1445static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = {
1446 {
1447 .ident = "Dell Latitude series",
1448 .matches = {
1449 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
1450 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude"),
1451 },
1452 .callback = atkbd_setup_fixup,
1453 .driver_data = atkbd_latitude_keymap_fixup,
1454 },
1455 { }
1456};
1da177e4
LT		 1457
1458static int __init atkbd_init(void)
1459{
554101e3
GN		 1460 dmi_check_system(atkbd_dmi_quirk_table);
1461
153a9df0 1462 return serio_register_driver(&atkbd_drv);
1da177e4
LT		 1463}
1464
1465static void __exit atkbd_exit(void)
1466{
1467 serio_unregister_driver(&atkbd_drv);
1468}
1469
1470module_init(atkbd_init);
1471module_exit(atkbd_exit);
Linux kernel - Deliverables
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