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[linux-2.6-block.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>
1da177e4
LT		 22#include <linux/slab.h>
23#include <linux/interrupt.h>
24#include <linux/init.h>
25#include <linux/input.h>
26#include <linux/serio.h>
27#include <linux/workqueue.h>
28#include <linux/libps2.h>
33d3f07a 29#include <linux/mutex.h>
554101e3 30#include <linux/dmi.h>
1da177e4
LT		 31
32#define DRIVER_DESC "AT and PS/2 keyboard driver"
33
34MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
35MODULE_DESCRIPTION(DRIVER_DESC);
36MODULE_LICENSE("GPL");
37
38static int atkbd_set = 2;
39module_param_named(set, atkbd_set, int, 0);
40MODULE_PARM_DESC(set, "Select keyboard code set (2 = default, 3 = PS/2 native)");
41
42#if defined(__i386__) || defined(__x86_64__) || defined(__hppa__)
43static int atkbd_reset;
44#else
45static int atkbd_reset = 1;
46#endif
47module_param_named(reset, atkbd_reset, bool, 0);
48MODULE_PARM_DESC(reset, "Reset keyboard during initialization");
49
50static int atkbd_softrepeat;
51module_param_named(softrepeat, atkbd_softrepeat, bool, 0);
52MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat");
53
54static int atkbd_softraw = 1;
55module_param_named(softraw, atkbd_softraw, bool, 0);
56MODULE_PARM_DESC(softraw, "Use software generated rawmode");
57
0ae051a1 58static int atkbd_scroll;
1da177e4
LT		 59module_param_named(scroll, atkbd_scroll, bool, 0);
60MODULE_PARM_DESC(scroll, "Enable scroll-wheel on MS Office and similar keyboards");
61
62static int atkbd_extra;
63module_param_named(extra, atkbd_extra, bool, 0);
64MODULE_PARM_DESC(extra, "Enable extra LEDs and keys on IBM RapidAcces, EzKey and similar keyboards");
65
1da177e4
LT		 66/*
67 * Scancode to keycode tables. These are just the default setting, and
68 * are loadable via an userland utility.
69 */
70
f6d65610 71static const unsigned short atkbd_set2_keycode[512] = {
1da177e4
LT		 72
73#ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES
74
75/* XXX: need a more general approach */
76
77#include "hpps2atkbd.h" /* include the keyboard scancodes */
78
79#else
80 0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117,
81 0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0,
82 0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183,
83 0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185,
84 0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0,
85 0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85,
86 0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0,
87 82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99,
88
89 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
90 217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125,
91 173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127,
72a42f24 92 159, 0,115, 0,164, 0, 0,116,158, 0,172,166, 0, 0, 0,142,
1da177e4
LT		 93 157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0,
94 226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0,
95 0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112,
96 110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0,
97
98 0, 0, 0, 65, 99,
99#endif
100};
101
f6d65610 102static const unsigned short atkbd_set3_keycode[512] = {
1da177e4
LT		 103
104 0, 0, 0, 0, 0, 0, 0, 59, 1,138,128,129,130, 15, 41, 60,
105 131, 29, 42, 86, 58, 16, 2, 61,133, 56, 44, 31, 30, 17, 3, 62,
106 134, 46, 45, 32, 18, 5, 4, 63,135, 57, 47, 33, 20, 19, 6, 64,
107 136, 49, 48, 35, 34, 21, 7, 65,137,100, 50, 36, 22, 8, 9, 66,
108 125, 51, 37, 23, 24, 11, 10, 67,126, 52, 53, 38, 39, 25, 12, 68,
109 113,114, 40, 43, 26, 13, 87, 99, 97, 54, 28, 27, 43, 43, 88, 70,
110 108,105,119,103,111,107, 14,110, 0, 79,106, 75, 71,109,102,104,
111 82, 83, 80, 76, 77, 72, 69, 98, 0, 96, 81, 0, 78, 73, 55,183,
112
113 184,185,186,187, 74, 94, 92, 93, 0, 0, 0,125,126,127,112, 0,
72a42f24 114 0,139,172,163,165,115,152,172,166,140,160,154,113,114,167,168,
1da177e4
LT		 115 148,149,147,140
116};
117
f6d65610 118static const unsigned short atkbd_unxlate_table[128] = {
1da177e4
LT		 119 0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13,
120 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27,
121 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42,
122 50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3,
123 11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105,
124 114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63,
125 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111,
126 19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110
127};
128
129#define ATKBD_CMD_SETLEDS 0x10ed
130#define ATKBD_CMD_GSCANSET 0x11f0
131#define ATKBD_CMD_SSCANSET 0x10f0
132#define ATKBD_CMD_GETID 0x02f2
133#define ATKBD_CMD_SETREP 0x10f3
134#define ATKBD_CMD_ENABLE 0x00f4
135#define ATKBD_CMD_RESET_DIS 0x00f5
136#define ATKBD_CMD_SETALL_MBR 0x00fa
137#define ATKBD_CMD_RESET_BAT 0x02ff
138#define ATKBD_CMD_RESEND 0x00fe
139#define ATKBD_CMD_EX_ENABLE 0x10ea
140#define ATKBD_CMD_EX_SETLEDS 0x20eb
141#define ATKBD_CMD_OK_GETID 0x02e8
142
143#define ATKBD_RET_ACK 0xfa
144#define ATKBD_RET_NAK 0xfe
145#define ATKBD_RET_BAT 0xaa
146#define ATKBD_RET_EMUL0 0xe0
147#define ATKBD_RET_EMUL1 0xe1
148#define ATKBD_RET_RELEASE 0xf0
0ae051a1
DT		 149#define ATKBD_RET_HANJA 0xf1
150#define ATKBD_RET_HANGEUL 0xf2
1da177e4
LT		 151#define ATKBD_RET_ERR 0xff
152
153#define ATKBD_KEY_UNKNOWN 0
154#define ATKBD_KEY_NULL 255
155
156#define ATKBD_SCR_1 254
157#define ATKBD_SCR_2 253
158#define ATKBD_SCR_4 252
159#define ATKBD_SCR_8 251
160#define ATKBD_SCR_CLICK 250
161#define ATKBD_SCR_LEFT 249
162#define ATKBD_SCR_RIGHT 248
163
f6d65610 164#define ATKBD_SPECIAL ATKBD_SCR_RIGHT
1da177e4 165
0d4c8597
DT		 166#define ATKBD_LED_EVENT_BIT 0
167#define ATKBD_REP_EVENT_BIT 1
168
0ae051a1
DT		 169#define ATKBD_XL_ERR 0x01
170#define ATKBD_XL_BAT 0x02
171#define ATKBD_XL_ACK 0x04
172#define ATKBD_XL_NAK 0x08
173#define ATKBD_XL_HANGEUL 0x10
174#define ATKBD_XL_HANJA 0x20
175
f6d65610 176static const struct {
1da177e4
LT		 177 unsigned char keycode;
178 unsigned char set2;
179} atkbd_scroll_keys[] = {
180 { ATKBD_SCR_1, 0xc5 },
5212dd58
VP		 181 { ATKBD_SCR_2, 0x9d },
182 { ATKBD_SCR_4, 0xa4 },
183 { ATKBD_SCR_8, 0x9b },
1da177e4
LT		 184 { ATKBD_SCR_CLICK, 0xe0 },
185 { ATKBD_SCR_LEFT, 0xcb },
186 { ATKBD_SCR_RIGHT, 0xd2 },
187};
188
189/*
190 * The atkbd control structure
191 */
192
193struct atkbd {
194
3c42f0c3
DT		 195 struct ps2dev ps2dev;
196 struct input_dev *dev;
1da177e4
LT		 197
198 /* Written only during init */
199 char name[64];
200 char phys[32];
1da177e4
LT		 201
202 unsigned short id;
f6d65610 203 unsigned short keycode[512];
554101e3 204 DECLARE_BITMAP(force_release_mask, 512);
1da177e4
LT		 205 unsigned char set;
206 unsigned char translated;
207 unsigned char extra;
208 unsigned char write;
209 unsigned char softrepeat;
210 unsigned char softraw;
211 unsigned char scroll;
212 unsigned char enabled;
213
214 /* Accessed only from interrupt */
215 unsigned char emul;
216 unsigned char resend;
217 unsigned char release;
0ae051a1 218 unsigned long xl_bit;
1da177e4
LT		 219 unsigned int last;
220 unsigned long time;
86255d9d 221 unsigned long err_count;
0d4c8597 222
da4249c9
DT		 223 struct delayed_work event_work;
224 unsigned long event_jiffies;
33d3f07a 225 struct mutex event_mutex;
0d4c8597 226 unsigned long event_mask;
1da177e4
LT		 227};
228
554101e3
GN		 229/*
230 * System-specific ketymap fixup routine
231 */
232static void (*atkbd_platform_fixup)(struct atkbd *);
233
1da177e4
LT		 234static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
235 ssize_t (*handler)(struct atkbd *, char *));
236static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
237 ssize_t (*handler)(struct atkbd *, const char *, size_t));
238#define ATKBD_DEFINE_ATTR(_name) \
239static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
240static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \
86255d9d
DT		 241static ssize_t atkbd_do_show_##_name(struct device *d, \
242 struct device_attribute *attr, char *b) \
1da177e4
LT		 243{ \
244 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
245} \
86255d9d
DT		 246static ssize_t atkbd_do_set_##_name(struct device *d, \
247 struct device_attribute *attr, const char *b, size_t s) \
1da177e4
LT		 248{ \
249 return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name); \
250} \
d083e906 251static struct device_attribute atkbd_attr_##_name = \
1da177e4
LT		 252 __ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name);
253
254ATKBD_DEFINE_ATTR(extra);
255ATKBD_DEFINE_ATTR(scroll);
256ATKBD_DEFINE_ATTR(set);
257ATKBD_DEFINE_ATTR(softrepeat);
258ATKBD_DEFINE_ATTR(softraw);
259
86255d9d
DT		 260#define ATKBD_DEFINE_RO_ATTR(_name) \
261static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
262static ssize_t atkbd_do_show_##_name(struct device *d, \
263 struct device_attribute *attr, char *b) \
264{ \
265 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
266} \
267static struct device_attribute atkbd_attr_##_name = \
268 __ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL);
269
270ATKBD_DEFINE_RO_ATTR(err_count);
271
272static struct attribute *atkbd_attributes[] = {
273 &atkbd_attr_extra.attr,
274 &atkbd_attr_scroll.attr,
275 &atkbd_attr_set.attr,
276 &atkbd_attr_softrepeat.attr,
277 &atkbd_attr_softraw.attr,
278 &atkbd_attr_err_count.attr,
279 NULL
280};
281
282static struct attribute_group atkbd_attribute_group = {
283 .attrs = atkbd_attributes,
284};
285
0ae051a1
DT		 286static const unsigned int xl_table[] = {
287 ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK,
288 ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL,
289};
1da177e4 290
0ae051a1
DT		 291/*
292 * Checks if we should mangle the scancode to extract 'release' bit
293 * in translated mode.
294 */
295static int atkbd_need_xlate(unsigned long xl_bit, unsigned char code)
1da177e4 296{
0ae051a1
DT		 297 int i;
298
299 if (code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1)
300 return 0;
301
302 for (i = 0; i < ARRAY_SIZE(xl_table); i++)
303 if (code == xl_table[i])
304 return test_bit(i, &xl_bit);
305
306 return 1;
307}
308
309/*
310 * Calculates new value of xl_bit so the driver can distinguish
311 * between make/break pair of scancodes for select keys and PS/2
312 * protocol responses.
313 */
314static void atkbd_calculate_xl_bit(struct atkbd *atkbd, unsigned char code)
315{
316 int i;
317
318 for (i = 0; i < ARRAY_SIZE(xl_table); i++) {
319 if (!((code ^ xl_table[i]) & 0x7f)) {
320 if (code & 0x80)
321 __clear_bit(i, &atkbd->xl_bit);
322 else
323 __set_bit(i, &atkbd->xl_bit);
324 break;
325 }
326 }
327}
328
329/*
330 * Encode the scancode, 0xe0 prefix, and high bit into a single integer,
331 * keeping kernel 2.4 compatibility for set 2
332 */
333static unsigned int atkbd_compat_scancode(struct atkbd *atkbd, unsigned int code)
334{
335 if (atkbd->set == 3) {
336 if (atkbd->emul == 1)
337 code |= 0x100;
338 } else {
339 code = (code & 0x7f) | ((code & 0x80) << 1);
340 if (atkbd->emul == 1)
341 code |= 0x80;
342 }
343
344 return code;
1da177e4
LT		 345}
346
347/*
348 * atkbd_interrupt(). Here takes place processing of data received from
349 * the keyboard into events.
350 */
351
352static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data,
7d12e780 353 unsigned int flags)
1da177e4
LT		 354{
355 struct atkbd *atkbd = serio_get_drvdata(serio);
0ae051a1 356 struct input_dev *dev = atkbd->dev;
1da177e4 357 unsigned int code = data;
554101e3 358 int scroll = 0, hscroll = 0, click = -1;
1da177e4 359 int value;
f6d65610 360 unsigned short keycode;
1da177e4
LT		 361
362#ifdef ATKBD_DEBUG
363 printk(KERN_DEBUG "atkbd.c: Received %02x flags %02x\n", data, flags);
364#endif
365
366#if !defined(__i386__) && !defined (__x86_64__)
367 if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) {
368 printk(KERN_WARNING "atkbd.c: frame/parity error: %02x\n", flags);
369 serio_write(serio, ATKBD_CMD_RESEND);
370 atkbd->resend = 1;
371 goto out;
372 }
373
374 if (!flags && data == ATKBD_RET_ACK)
375 atkbd->resend = 0;
376#endif
377
378 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_ACK))
379 if (ps2_handle_ack(&atkbd->ps2dev, data))
380 goto out;
381
382 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_CMD))
383 if (ps2_handle_response(&atkbd->ps2dev, data))
384 goto out;
385
386 if (!atkbd->enabled)
387 goto out;
388
0ae051a1 389 input_event(dev, EV_MSC, MSC_RAW, code);
1da177e4
LT		 390
391 if (atkbd->translated) {
392
0ae051a1 393 if (atkbd->emul || atkbd_need_xlate(atkbd->xl_bit, code)) {
1da177e4
LT		 394 atkbd->release = code >> 7;
395 code &= 0x7f;
396 }
397
0ae051a1
DT		 398 if (!atkbd->emul)
399 atkbd_calculate_xl_bit(atkbd, data);
1da177e4
LT		 400 }
401
402 switch (code) {
403 case ATKBD_RET_BAT:
404 atkbd->enabled = 0;
dbc26344 405 serio_reconnect(atkbd->ps2dev.serio);
1da177e4
LT		 406 goto out;
407 case ATKBD_RET_EMUL0:
408 atkbd->emul = 1;
409 goto out;
410 case ATKBD_RET_EMUL1:
411 atkbd->emul = 2;
412 goto out;
413 case ATKBD_RET_RELEASE:
414 atkbd->release = 1;
415 goto out;
0ae051a1
DT		 416 case ATKBD_RET_ACK:
417 case ATKBD_RET_NAK:
9f7a60d6
QY		 418 if (printk_ratelimit())
419 printk(KERN_WARNING "atkbd.c: Spurious %s on %s. "
420 "Some program might be trying access hardware directly.\n",
421 data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys);
1da177e4 422 goto out;
1da177e4 423 case ATKBD_RET_ERR:
86255d9d
DT		 424 atkbd->err_count++;
425#ifdef ATKBD_DEBUG
1da177e4 426 printk(KERN_DEBUG "atkbd.c: Keyboard on %s reports too many keys pressed.\n", serio->phys);
86255d9d 427#endif
1da177e4
LT		 428 goto out;
429 }
430
0ae051a1
DT		 431 code = atkbd_compat_scancode(atkbd, code);
432
433 if (atkbd->emul && --atkbd->emul)
434 goto out;
435
436 keycode = atkbd->keycode[code];
1da177e4 437
0ae051a1
DT		 438 if (keycode != ATKBD_KEY_NULL)
439 input_event(dev, EV_MSC, MSC_SCAN, code);
1da177e4 440
0ae051a1 441 switch (keycode) {
1da177e4
LT		 442 case ATKBD_KEY_NULL:
443 break;
444 case ATKBD_KEY_UNKNOWN:
0ae051a1
DT		 445 printk(KERN_WARNING
446 "atkbd.c: Unknown key %s (%s set %d, code %#x on %s).\n",
447 atkbd->release ? "released" : "pressed",
448 atkbd->translated ? "translated" : "raw",
449 atkbd->set, code, serio->phys);
450 printk(KERN_WARNING
451 "atkbd.c: Use 'setkeycodes %s%02x <keycode>' to make it known.\n",
452 code & 0x80 ? "e0" : "", code & 0x7f);
453 input_sync(dev);
1da177e4
LT		 454 break;
455 case ATKBD_SCR_1:
456 scroll = 1 - atkbd->release * 2;
457 break;
458 case ATKBD_SCR_2:
459 scroll = 2 - atkbd->release * 4;
460 break;
461 case ATKBD_SCR_4:
462 scroll = 4 - atkbd->release * 8;
463 break;
464 case ATKBD_SCR_8:
465 scroll = 8 - atkbd->release * 16;
466 break;
467 case ATKBD_SCR_CLICK:
468 click = !atkbd->release;
469 break;
470 case ATKBD_SCR_LEFT:
471 hscroll = -1;
472 break;
473 case ATKBD_SCR_RIGHT:
474 hscroll = 1;
475 break;
476 default:
0ae051a1
DT		 477 if (atkbd->release) {
478 value = 0;
479 atkbd->last = 0;
480 } else if (!atkbd->softrepeat && test_bit(keycode, dev->key)) {
481 /* Workaround Toshiba laptop multiple keypress */
482 value = time_before(jiffies, atkbd->time) && atkbd->last == code ? 1 : 2;
483 } else {
484 value = 1;
485 atkbd->last = code;
486 atkbd->time = jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]) / 2;
1da177e4
LT		 487 }
488
f8b4c46c 489 input_event(dev, EV_KEY, keycode, value);
0ae051a1
DT		 490 input_sync(dev);
491
554101e3 492 if (value && test_bit(code, atkbd->force_release_mask)) {
0ae051a1
DT		 493 input_report_key(dev, keycode, 0);
494 input_sync(dev);
495 }
1da177e4
LT		 496 }
497
498 if (atkbd->scroll) {
1da177e4 499 if (click != -1)
0ae051a1
DT		 500 input_report_key(dev, BTN_MIDDLE, click);
501 input_report_rel(dev, REL_WHEEL, scroll);
502 input_report_rel(dev, REL_HWHEEL, hscroll);
503 input_sync(dev);
1da177e4
LT		 504 }
505
506 atkbd->release = 0;
507out:
508 return IRQ_HANDLED;
509}
510
3d0f0fa0 511static int atkbd_set_repeat_rate(struct atkbd *atkbd)
1da177e4 512{
1da177e4
LT		 513 const short period[32] =
514 { 33, 37, 42, 46, 50, 54, 58, 63, 67, 75, 83, 92, 100, 109, 116, 125,
515 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 };
516 const short delay[4] =
517 { 250, 500, 750, 1000 };
0d4c8597 518
3d0f0fa0
DT		 519 struct input_dev *dev = atkbd->dev;
520 unsigned char param;
521 int i = 0, j = 0;
522
523 while (i < ARRAY_SIZE(period) - 1 && period[i] < dev->rep[REP_PERIOD])
524 i++;
525 dev->rep[REP_PERIOD] = period[i];
526
8ea371fb 527 while (j < ARRAY_SIZE(delay) - 1 && delay[j] < dev->rep[REP_DELAY])
3d0f0fa0
DT		 528 j++;
529 dev->rep[REP_DELAY] = delay[j];
530
531 param = i | (j << 5);
532 return ps2_command(&atkbd->ps2dev, &param, ATKBD_CMD_SETREP);
533}
534
535static int atkbd_set_leds(struct atkbd *atkbd)
536{
0d4c8597 537 struct input_dev *dev = atkbd->dev;
1da177e4 538 unsigned char param[2];
1da177e4 539
3d0f0fa0
DT		 540 param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0)
541 | (test_bit(LED_NUML, dev->led) ? 2 : 0)
542 | (test_bit(LED_CAPSL, dev->led) ? 4 : 0);
543 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS))
544 return -1;
0d4c8597 545
3d0f0fa0
DT		 546 if (atkbd->extra) {
547 param[0] = 0;
548 param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0)
549 | (test_bit(LED_SLEEP, dev->led) ? 0x02 : 0)
550 | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0)
551 | (test_bit(LED_MISC, dev->led) ? 0x10 : 0)
552 | (test_bit(LED_MUTE, dev->led) ? 0x20 : 0);
553 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS))
554 return -1;
0d4c8597
DT		 555 }
556
3d0f0fa0
DT		 557 return 0;
558}
559
560/*
561 * atkbd_event_work() is used to complete processing of events that
562 * can not be processed by input_event() which is often called from
563 * interrupt context.
564 */
565
65f27f38 566static void atkbd_event_work(struct work_struct *work)
3d0f0fa0 567{
da4249c9 568 struct atkbd *atkbd = container_of(work, struct atkbd, event_work.work);
3d0f0fa0
DT		 569
570 mutex_lock(&atkbd->event_mutex);
571
572 if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask))
573 atkbd_set_leds(atkbd);
574
575 if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask))
576 atkbd_set_repeat_rate(atkbd);
0d4c8597 577
33d3f07a 578 mutex_unlock(&atkbd->event_mutex);
0d4c8597
DT		 579}
580
da4249c9
DT		 581/*
582 * Schedule switch for execution. We need to throttle requests,
583 * otherwise keyboard may become unresponsive.
584 */
585static void atkbd_schedule_event_work(struct atkbd *atkbd, int event_bit)
586{
587 unsigned long delay = msecs_to_jiffies(50);
588
589 if (time_after(jiffies, atkbd->event_jiffies + delay))
590 delay = 0;
591
592 atkbd->event_jiffies = jiffies;
593 set_bit(event_bit, &atkbd->event_mask);
594 wmb();
595 schedule_delayed_work(&atkbd->event_work, delay);
596}
597
0d4c8597
DT		 598/*
599 * Event callback from the input module. Events that change the state of
600 * the hardware are processed here. If action can not be performed in
601 * interrupt context it is offloaded to atkbd_event_work.
602 */
603
da4249c9
DT		 604static int atkbd_event(struct input_dev *dev,
605 unsigned int type, unsigned int code, int value)
0d4c8597 606{
b356872f 607 struct atkbd *atkbd = input_get_drvdata(dev);
0d4c8597 608
1da177e4
LT		 609 if (!atkbd->write)
610 return -1;
611
612 switch (type) {
613
614 case EV_LED:
da4249c9 615 atkbd_schedule_event_work(atkbd, ATKBD_LED_EVENT_BIT);
1da177e4
LT		 616 return 0;
617
1da177e4 618 case EV_REP:
da4249c9
DT		 619 if (!atkbd->softrepeat)
620 atkbd_schedule_event_work(atkbd, ATKBD_REP_EVENT_BIT);
1da177e4
LT		 621 return 0;
622 }
623
624 return -1;
625}
626
627/*
628 * atkbd_enable() signals that interrupt handler is allowed to
629 * generate input events.
630 */
631
632static inline void atkbd_enable(struct atkbd *atkbd)
633{
634 serio_pause_rx(atkbd->ps2dev.serio);
635 atkbd->enabled = 1;
636 serio_continue_rx(atkbd->ps2dev.serio);
637}
638
639/*
640 * atkbd_disable() tells input handler that all incoming data except
641 * for ACKs and command response should be dropped.
642 */
643
644static inline void atkbd_disable(struct atkbd *atkbd)
645{
646 serio_pause_rx(atkbd->ps2dev.serio);
647 atkbd->enabled = 0;
648 serio_continue_rx(atkbd->ps2dev.serio);
649}
650
651/*
652 * atkbd_probe() probes for an AT keyboard on a serio port.
653 */
654
655static int atkbd_probe(struct atkbd *atkbd)
656{
657 struct ps2dev *ps2dev = &atkbd->ps2dev;
658 unsigned char param[2];
659
660/*
661 * Some systems, where the bit-twiddling when testing the io-lines of the
662 * controller may confuse the keyboard need a full reset of the keyboard. On
663 * these systems the BIOS also usually doesn't do it for us.
664 */
665
666 if (atkbd_reset)
667 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT))
668 printk(KERN_WARNING "atkbd.c: keyboard reset failed on %s\n", ps2dev->serio->phys);
669
670/*
671 * Then we check the keyboard ID. We should get 0xab83 under normal conditions.
672 * Some keyboards report different values, but the first byte is always 0xab or
673 * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this
674 * should make sure we don't try to set the LEDs on it.
675 */
676
677 param[0] = param[1] = 0xa5; /* initialize with invalid values */
678 if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) {
679
680/*
681 * If the get ID command failed, we check if we can at least set the LEDs on
682 * the keyboard. This should work on every keyboard out there. It also turns
683 * the LEDs off, which we want anyway.
684 */
685 param[0] = 0;
686 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
687 return -1;
688 atkbd->id = 0xabba;
689 return 0;
690 }
691
9807879b 692 if (!ps2_is_keyboard_id(param[0]))
1da177e4
LT		 693 return -1;
694
695 atkbd->id = (param[0] << 8) | param[1];
696
697 if (atkbd->id == 0xaca1 && atkbd->translated) {
698 printk(KERN_ERR "atkbd.c: NCD terminal keyboards are only supported on non-translating\n");
699 printk(KERN_ERR "atkbd.c: controllers. Use i8042.direct=1 to disable translation.\n");
700 return -1;
701 }
702
703 return 0;
704}
705
706/*
707 * atkbd_select_set checks if a keyboard has a working Set 3 support, and
708 * sets it into that. Unfortunately there are keyboards that can be switched
709 * to Set 3, but don't work well in that (BTC Multimedia ...)
710 */
711
712static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra)
713{
714 struct ps2dev *ps2dev = &atkbd->ps2dev;
715 unsigned char param[2];
716
717 atkbd->extra = 0;
718/*
719 * For known special keyboards we can go ahead and set the correct set.
720 * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and
721 * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards.
722 */
723
724 if (atkbd->translated)
725 return 2;
726
727 if (atkbd->id == 0xaca1) {
728 param[0] = 3;
729 ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET);
730 return 3;
731 }
732
733 if (allow_extra) {
734 param[0] = 0x71;
735 if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) {
736 atkbd->extra = 1;
737 return 2;
738 }
739 }
740
741 if (target_set != 3)
742 return 2;
743
744 if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) {
745 atkbd->id = param[0] << 8 | param[1];
746 return 2;
747 }
748
749 param[0] = 3;
750 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
751 return 2;
752
753 param[0] = 0;
754 if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET))
755 return 2;
756
757 if (param[0] != 3) {
758 param[0] = 2;
759 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
760 return 2;
761 }
762
763 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR);
764
765 return 3;
766}
767
768static int atkbd_activate(struct atkbd *atkbd)
769{
770 struct ps2dev *ps2dev = &atkbd->ps2dev;
771 unsigned char param[1];
772
773/*
774 * Set the LEDs to a defined state.
775 */
776
777 param[0] = 0;
778 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
779 return -1;
780
781/*
782 * Set autorepeat to fastest possible.
783 */
784
785 param[0] = 0;
786 if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP))
787 return -1;
788
789/*
790 * Enable the keyboard to receive keystrokes.
791 */
792
793 if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) {
794 printk(KERN_ERR "atkbd.c: Failed to enable keyboard on %s\n",
795 ps2dev->serio->phys);
796 return -1;
797 }
798
799 return 0;
800}
801
802/*
803 * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a
804 * reboot.
805 */
806
807static void atkbd_cleanup(struct serio *serio)
808{
809 struct atkbd *atkbd = serio_get_drvdata(serio);
57f5b159
DT		 810
811 atkbd_disable(atkbd);
1da177e4
LT		 812 ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_BAT);
813}
814
815
816/*
817 * atkbd_disconnect() closes and frees.
818 */
819
820static void atkbd_disconnect(struct serio *serio)
821{
822 struct atkbd *atkbd = serio_get_drvdata(serio);
823
824 atkbd_disable(atkbd);
825
826 /* make sure we don't have a command in flight */
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 836/*
61579ba8 837 * Most special keys (Fn+F?) on Dell laptops do not generate release
554101e3
GN		 838 * events so we have to do it ourselves.
839 */
61579ba8 840static void atkbd_dell_laptop_keymap_fixup(struct atkbd *atkbd)
554101e3
GN		 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 852
5a54c011
JK		 853/*
854 * Perform fixup for HP system that doesn't generate release
855 * for its video switch
856 */
857static void atkbd_hp_keymap_fixup(struct atkbd *atkbd)
858{
859 const unsigned int forced_release_keys[] = {
860 0x94,
861 };
862 int i;
863
864 if (atkbd->set == 2)
865 for (i = 0; i < ARRAY_SIZE(forced_release_keys); i++)
866 __set_bit(forced_release_keys[i],
867 atkbd->force_release_mask);
868}
869
1da177e4 870/*
3c42f0c3 871 * atkbd_set_keycode_table() initializes keyboard's keycode table
1da177e4
LT		 872 * according to the selected scancode set
873 */
874
875static void atkbd_set_keycode_table(struct atkbd *atkbd)
876{
554101e3 877 unsigned int scancode;
1da177e4
LT		 878 int i, j;
879
880 memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
554101e3 881 bitmap_zero(atkbd->force_release_mask, 512);
1da177e4
LT		 882
883 if (atkbd->translated) {
884 for (i = 0; i < 128; i++) {
554101e3
GN		 885 scancode = atkbd_unxlate_table[i];
886 atkbd->keycode[i] = atkbd_set2_keycode[scancode];
887 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80];
1da177e4
LT		 888 if (atkbd->scroll)
889 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
554101e3 890 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2)
1da177e4
LT		 891 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
892 }
893 } else if (atkbd->set == 3) {
894 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
895 } else {
896 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
897
898 if (atkbd->scroll)
554101e3
GN		 899 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) {
900 scancode = atkbd_scroll_keys[i].set2;
901 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode;
902 }
1da177e4 903 }
0ae051a1 904
554101e3
GN		 905/*
906 * HANGEUL and HANJA keys do not send release events so we need to
907 * generate such events ourselves
908 */
909 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL);
910 atkbd->keycode[scancode] = KEY_HANGEUL;
911 __set_bit(scancode, atkbd->force_release_mask);
912
913 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA);
914 atkbd->keycode[scancode] = KEY_HANJA;
915 __set_bit(scancode, atkbd->force_release_mask);
916
917/*
918 * Perform additional fixups
919 */
920 if (atkbd_platform_fixup)
921 atkbd_platform_fixup(atkbd);
1da177e4
LT		 922}
923
924/*
925 * atkbd_set_device_attrs() sets up keyboard's input device structure
926 */
927
928static void atkbd_set_device_attrs(struct atkbd *atkbd)
929{
3c42f0c3 930 struct input_dev *input_dev = atkbd->dev;
1da177e4
LT		 931 int i;
932
3c42f0c3 933 if (atkbd->extra)
ea08c6fa
DT		 934 snprintf(atkbd->name, sizeof(atkbd->name),
935 "AT Set 2 Extra keyboard");
3c42f0c3 936 else
ea08c6fa
DT		 937 snprintf(atkbd->name, sizeof(atkbd->name),
938 "AT %s Set %d keyboard",
939 atkbd->translated ? "Translated" : "Raw", atkbd->set);
1da177e4 940
ea08c6fa
DT		 941 snprintf(atkbd->phys, sizeof(atkbd->phys),
942 "%s/input0", atkbd->ps2dev.serio->phys);
1da177e4 943
3c42f0c3
DT		 944 input_dev->name = atkbd->name;
945 input_dev->phys = atkbd->phys;
946 input_dev->id.bustype = BUS_I8042;
947 input_dev->id.vendor = 0x0001;
948 input_dev->id.product = atkbd->translated ? 1 : atkbd->set;
949 input_dev->id.version = atkbd->id;
950 input_dev->event = atkbd_event;
469ba4df 951 input_dev->dev.parent = &atkbd->ps2dev.serio->dev;
1da177e4 952
b356872f
DT		 953 input_set_drvdata(input_dev, atkbd);
954
7b19ada2
JS		 955 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
956 BIT_MASK(EV_MSC);
1da177e4
LT		 957
958 if (atkbd->write) {
7b19ada2
JS		 959 input_dev->evbit[0] |= BIT_MASK(EV_LED);
960 input_dev->ledbit[0] = BIT_MASK(LED_NUML) |
961 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL);
1da177e4
LT		 962 }
963
964 if (atkbd->extra)
7b19ada2
JS		 965 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) |
966 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) |
967 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC);
1da177e4
LT		 968
969 if (!atkbd->softrepeat) {
3c42f0c3
DT		 970 input_dev->rep[REP_DELAY] = 250;
971 input_dev->rep[REP_PERIOD] = 33;
1da177e4
LT		 972 }
973
7b19ada2
JS		 974 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) :
975 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN);
1da177e4
LT		 976
977 if (atkbd->scroll) {
7b19ada2
JS		 978 input_dev->evbit[0] |= BIT_MASK(EV_REL);
979 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) |
980 BIT_MASK(REL_HWHEEL);
f6d65610 981 __set_bit(BTN_MIDDLE, input_dev->keybit);
1da177e4
LT		 982 }
983
3c42f0c3 984 input_dev->keycode = atkbd->keycode;
f6d65610 985 input_dev->keycodesize = sizeof(unsigned short);
3c42f0c3 986 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
1da177e4
LT		 987
988 for (i = 0; i < 512; i++)
989 if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL)
f6d65610 990 __set_bit(atkbd->keycode[i], input_dev->keybit);
1da177e4
LT		 991}
992
993/*
994 * atkbd_connect() is called when the serio module finds an interface
995 * that isn't handled yet by an appropriate device driver. We check if
996 * there is an AT keyboard out there and if yes, we register ourselves
997 * to the input module.
998 */
999
1000static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
1001{
1002 struct atkbd *atkbd;
3c42f0c3
DT		 1003 struct input_dev *dev;
1004 int err = -ENOMEM;
1da177e4 1005
3c42f0c3
DT		 1006 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL);
1007 dev = input_allocate_device();
1008 if (!atkbd || !dev)
2b03b60e 1009 goto fail1;
1da177e4 1010
3c42f0c3 1011 atkbd->dev = dev;
1da177e4 1012 ps2_init(&atkbd->ps2dev, serio);
da4249c9 1013 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work);
33d3f07a 1014 mutex_init(&atkbd->event_mutex);
1da177e4
LT		 1015
1016 switch (serio->id.type) {
1017
1018 case SERIO_8042_XL:
1019 atkbd->translated = 1;
1020 case SERIO_8042:
1021 if (serio->write)
1022 atkbd->write = 1;
1023 break;
1024 }
1025
1026 atkbd->softraw = atkbd_softraw;
1027 atkbd->softrepeat = atkbd_softrepeat;
1028 atkbd->scroll = atkbd_scroll;
1029
1da177e4
LT		 1030 if (atkbd->softrepeat)
1031 atkbd->softraw = 1;
1032
1033 serio_set_drvdata(serio, atkbd);
1034
1035 err = serio_open(serio, drv);
3c42f0c3 1036 if (err)
2b03b60e 1037 goto fail2;
1da177e4
LT		 1038
1039 if (atkbd->write) {
1040
1041 if (atkbd_probe(atkbd)) {
3c42f0c3 1042 err = -ENODEV;
2b03b60e 1043 goto fail3;
1da177e4
LT		 1044 }
1045
1046 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
1047 atkbd_activate(atkbd);
1048
1049 } else {
1050 atkbd->set = 2;
1051 atkbd->id = 0xab00;
1052 }
1053
1da177e4
LT		 1054 atkbd_set_keycode_table(atkbd);
1055 atkbd_set_device_attrs(atkbd);
1056
2b03b60e
DT		 1057 err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group);
1058 if (err)
1059 goto fail3;
1da177e4
LT		 1060
1061 atkbd_enable(atkbd);
1062
2b03b60e
DT		 1063 err = input_register_device(atkbd->dev);
1064 if (err)
1065 goto fail4;
1da177e4
LT		 1066
1067 return 0;
3c42f0c3 1068
2b03b60e
DT		 1069 fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
1070 fail3: serio_close(serio);
1071 fail2: serio_set_drvdata(serio, NULL);
1072 fail1: input_free_device(dev);
3c42f0c3
DT		 1073 kfree(atkbd);
1074 return err;
1da177e4
LT		 1075}
1076
1077/*
1078 * atkbd_reconnect() tries to restore keyboard into a sane state and is
1079 * most likely called on resume.
1080 */
1081
1082static int atkbd_reconnect(struct serio *serio)
1083{
1084 struct atkbd *atkbd = serio_get_drvdata(serio);
1085 struct serio_driver *drv = serio->drv;
1da177e4
LT		 1086
1087 if (!atkbd || !drv) {
1088 printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n");
1089 return -1;
1090 }
1091
1092 atkbd_disable(atkbd);
1093
1094 if (atkbd->write) {
1da177e4
LT		 1095 if (atkbd_probe(atkbd))
1096 return -1;
1097 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
1098 return -1;
1099
1100 atkbd_activate(atkbd);
1101
3d0f0fa0
DT		 1102/*
1103 * Restore repeat rate and LEDs (that were reset by atkbd_activate)
1104 * to pre-resume state
1105 */
1106 if (!atkbd->softrepeat)
1107 atkbd_set_repeat_rate(atkbd);
1108 atkbd_set_leds(atkbd);
1da177e4
LT		 1109 }
1110
1111 atkbd_enable(atkbd);
1112
1113 return 0;
1114}
1115
1116static struct serio_device_id atkbd_serio_ids[] = {
1117 {
1118 .type = SERIO_8042,
1119 .proto = SERIO_ANY,
1120 .id = SERIO_ANY,
1121 .extra = SERIO_ANY,
1122 },
1123 {
1124 .type = SERIO_8042_XL,
1125 .proto = SERIO_ANY,
1126 .id = SERIO_ANY,
1127 .extra = SERIO_ANY,
1128 },
1129 {
1130 .type = SERIO_RS232,
1131 .proto = SERIO_PS2SER,
1132 .id = SERIO_ANY,
1133 .extra = SERIO_ANY,
1134 },
1135 { 0 }
1136};
1137
1138MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
1139
1140static struct serio_driver atkbd_drv = {
1141 .driver = {
1142 .name = "atkbd",
1143 },
1144 .description = DRIVER_DESC,
1145 .id_table = atkbd_serio_ids,
1146 .interrupt = atkbd_interrupt,
1147 .connect = atkbd_connect,
1148 .reconnect = atkbd_reconnect,
1149 .disconnect = atkbd_disconnect,
1150 .cleanup = atkbd_cleanup,
1151};
1152
1153static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
1154 ssize_t (*handler)(struct atkbd *, char *))
1155{
1156 struct serio *serio = to_serio_port(dev);
1157 int retval;
1158
1159 retval = serio_pin_driver(serio);
1160 if (retval)
1161 return retval;
1162
1163 if (serio->drv != &atkbd_drv) {
1164 retval = -ENODEV;
1165 goto out;
1166 }
1167
1168 retval = handler((struct atkbd *)serio_get_drvdata(serio), buf);
1169
1170out:
1171 serio_unpin_driver(serio);
1172 return retval;
1173}
1174
1175static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
1176 ssize_t (*handler)(struct atkbd *, const char *, size_t))
1177{
1178 struct serio *serio = to_serio_port(dev);
1179 struct atkbd *atkbd;
1180 int retval;
1181
1182 retval = serio_pin_driver(serio);
1183 if (retval)
1184 return retval;
1185
1186 if (serio->drv != &atkbd_drv) {
1187 retval = -ENODEV;
1188 goto out;
1189 }
1190
1191 atkbd = serio_get_drvdata(serio);
1192 atkbd_disable(atkbd);
1193 retval = handler(atkbd, buf, count);
1194 atkbd_enable(atkbd);
1195
1196out:
1197 serio_unpin_driver(serio);
1198 return retval;
1199}
1200
1201static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
1202{
1203 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
1204}
1205
1206static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
1207{
2b03b60e 1208 struct input_dev *old_dev, *new_dev;
1da177e4 1209 unsigned long value;
2b03b60e
DT		 1210 int err;
1211 unsigned char old_extra, old_set;
1da177e4
LT		 1212
1213 if (!atkbd->write)
1214 return -EIO;
1215
160f1fef 1216 if (strict_strtoul(buf, 10, &value) || value > 1)
1da177e4
LT		 1217 return -EINVAL;
1218
1219 if (atkbd->extra != value) {
3c42f0c3
DT		 1220 /*
1221 * Since device's properties will change we need to
2b03b60e
DT		 1222 * unregister old device. But allocate and register
1223 * new one first to make sure we have it.
3c42f0c3 1224 */
2b03b60e
DT		 1225 old_dev = atkbd->dev;
1226 old_extra = atkbd->extra;
1227 old_set = atkbd->set;
1228
1229 new_dev = input_allocate_device();
1230 if (!new_dev)
3c42f0c3 1231 return -ENOMEM;
2b03b60e 1232
3c42f0c3 1233 atkbd->dev = new_dev;
1da177e4
LT		 1234 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
1235 atkbd_activate(atkbd);
2b03b60e 1236 atkbd_set_keycode_table(atkbd);
1da177e4 1237 atkbd_set_device_attrs(atkbd);
2b03b60e
DT		 1238
1239 err = input_register_device(atkbd->dev);
1240 if (err) {
1241 input_free_device(new_dev);
1242
1243 atkbd->dev = old_dev;
1244 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1245 atkbd_set_keycode_table(atkbd);
1246 atkbd_set_device_attrs(atkbd);
1247
1248 return err;
1249 }
1250 input_unregister_device(old_dev);
1251
1da177e4
LT		 1252 }
1253 return count;
1254}
1255
1256static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
1257{
1258 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
1259}
1260
1261static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
1262{
2b03b60e 1263 struct input_dev *old_dev, *new_dev;
1da177e4 1264 unsigned long value;
2b03b60e
DT		 1265 int err;
1266 unsigned char old_scroll;
1da177e4 1267
160f1fef 1268 if (strict_strtoul(buf, 10, &value) || value > 1)
1da177e4
LT		 1269 return -EINVAL;
1270
1271 if (atkbd->scroll != value) {
2b03b60e
DT		 1272 old_dev = atkbd->dev;
1273 old_scroll = atkbd->scroll;
1274
1275 new_dev = input_allocate_device();
1276 if (!new_dev)
3c42f0c3 1277 return -ENOMEM;
2b03b60e 1278
3c42f0c3 1279 atkbd->dev = new_dev;
1da177e4
LT		 1280 atkbd->scroll = value;
1281 atkbd_set_keycode_table(atkbd);
1282 atkbd_set_device_attrs(atkbd);
2b03b60e
DT		 1283
1284 err = input_register_device(atkbd->dev);
1285 if (err) {
1286 input_free_device(new_dev);
1287
1288 atkbd->scroll = old_scroll;
1289 atkbd->dev = old_dev;
1290 atkbd_set_keycode_table(atkbd);
1291 atkbd_set_device_attrs(atkbd);
1292
1293 return err;
1294 }
1295 input_unregister_device(old_dev);
1da177e4
LT		 1296 }
1297 return count;
1298}
1299
1300static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
1301{
1302 return sprintf(buf, "%d\n", atkbd->set);
1303}
1304
1305static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
1306{
2b03b60e 1307 struct input_dev *old_dev, *new_dev;
1da177e4 1308 unsigned long value;
2b03b60e
DT		 1309 int err;
1310 unsigned char old_set, old_extra;
1da177e4
LT		 1311
1312 if (!atkbd->write)
1313 return -EIO;
1314
160f1fef 1315 if (strict_strtoul(buf, 10, &value) || (value != 2 && value != 3))
1da177e4
LT		 1316 return -EINVAL;
1317
1318 if (atkbd->set != value) {
2b03b60e
DT		 1319 old_dev = atkbd->dev;
1320 old_extra = atkbd->extra;
1321 old_set = atkbd->set;
1322
1323 new_dev = input_allocate_device();
1324 if (!new_dev)
3c42f0c3 1325 return -ENOMEM;
2b03b60e 1326
3c42f0c3 1327 atkbd->dev = new_dev;
1da177e4
LT		 1328 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra);
1329 atkbd_activate(atkbd);
1330 atkbd_set_keycode_table(atkbd);
1331 atkbd_set_device_attrs(atkbd);
2b03b60e
DT		 1332
1333 err = input_register_device(atkbd->dev);
1334 if (err) {
1335 input_free_device(new_dev);
1336
1337 atkbd->dev = old_dev;
1338 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1339 atkbd_set_keycode_table(atkbd);
1340 atkbd_set_device_attrs(atkbd);
1341
1342 return err;
1343 }
1344 input_unregister_device(old_dev);
1da177e4
LT		 1345 }
1346 return count;
1347}
1348
1349static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
1350{
1351 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
1352}
1353
1354static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
1355{
2b03b60e 1356 struct input_dev *old_dev, *new_dev;
1da177e4 1357 unsigned long value;
2b03b60e
DT		 1358 int err;
1359 unsigned char old_softrepeat, old_softraw;
1da177e4
LT		 1360
1361 if (!atkbd->write)
1362 return -EIO;
1363
160f1fef 1364 if (strict_strtoul(buf, 10, &value) || value > 1)
1da177e4
LT		 1365 return -EINVAL;
1366
1367 if (atkbd->softrepeat != value) {
2b03b60e
DT		 1368 old_dev = atkbd->dev;
1369 old_softrepeat = atkbd->softrepeat;
1370 old_softraw = atkbd->softraw;
1371
1372 new_dev = input_allocate_device();
1373 if (!new_dev)
3c42f0c3 1374 return -ENOMEM;
2b03b60e 1375
3c42f0c3 1376 atkbd->dev = new_dev;
1da177e4
LT		 1377 atkbd->softrepeat = value;
1378 if (atkbd->softrepeat)
1379 atkbd->softraw = 1;
1380 atkbd_set_device_attrs(atkbd);
2b03b60e
DT		 1381
1382 err = input_register_device(atkbd->dev);
1383 if (err) {
1384 input_free_device(new_dev);
1385
1386 atkbd->dev = old_dev;
1387 atkbd->softrepeat = old_softrepeat;
1388 atkbd->softraw = old_softraw;
1389 atkbd_set_device_attrs(atkbd);
1390
1391 return err;
1392 }
1393 input_unregister_device(old_dev);
1da177e4 1394 }
1da177e4
LT		 1395 return count;
1396}
1397
1398
1399static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
1400{
1401 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
1402}
1403
1404static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
1405{
2b03b60e 1406 struct input_dev *old_dev, *new_dev;
1da177e4 1407 unsigned long value;
2b03b60e
DT		 1408 int err;
1409 unsigned char old_softraw;
1da177e4 1410
160f1fef 1411 if (strict_strtoul(buf, 10, &value) || value > 1)
1da177e4
LT		 1412 return -EINVAL;
1413
1414 if (atkbd->softraw != value) {
2b03b60e
DT		 1415 old_dev = atkbd->dev;
1416 old_softraw = atkbd->softraw;
1417
1418 new_dev = input_allocate_device();
1419 if (!new_dev)
3c42f0c3 1420 return -ENOMEM;
2b03b60e 1421
3c42f0c3 1422 atkbd->dev = new_dev;
1da177e4
LT		 1423 atkbd->softraw = value;
1424 atkbd_set_device_attrs(atkbd);
2b03b60e
DT		 1425
1426 err = input_register_device(atkbd->dev);
1427 if (err) {
1428 input_free_device(new_dev);
1429
1430 atkbd->dev = old_dev;
1431 atkbd->softraw = old_softraw;
1432 atkbd_set_device_attrs(atkbd);
1433
1434 return err;
1435 }
1436 input_unregister_device(old_dev);
1da177e4
LT		 1437 }
1438 return count;
1439}
1440
86255d9d
DT		 1441static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
1442{
1443 return sprintf(buf, "%lu\n", atkbd->err_count);
1444}
1445
554101e3
GN		 1446static int __init atkbd_setup_fixup(const struct dmi_system_id *id)
1447{
1448 atkbd_platform_fixup = id->driver_data;
1449 return 0;
1450}
1451
1452static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = {
1453 {
61579ba8 1454 .ident = "Dell Laptop",
554101e3
GN		 1455 .matches = {
1456 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
61579ba8 1457 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
554101e3
GN		 1458 },
1459 .callback = atkbd_setup_fixup,
61579ba8 1460 .driver_data = atkbd_dell_laptop_keymap_fixup,
554101e3 1461 },
5a54c011
JK		 1462 {
1463 .ident = "HP 2133",
1464 .matches = {
1465 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1466 DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"),
1467 },
1468 .callback = atkbd_setup_fixup,
1469 .driver_data = atkbd_hp_keymap_fixup,
1470 },
554101e3
GN		 1471 { }
1472};
1da177e4
LT		 1473
1474static int __init atkbd_init(void)
1475{
554101e3
GN		 1476 dmi_check_system(atkbd_dmi_quirk_table);
1477
153a9df0 1478 return serio_register_driver(&atkbd_drv);
1da177e4
LT		 1479}
1480
1481static void __exit atkbd_exit(void)
1482{
1483 serio_unregister_driver(&atkbd_drv);
1484}
1485
1486module_init(atkbd_init);
1487module_exit(atkbd_exit);
Linux 6.x block layer and io_uring tree(s)