2 * AT and PS/2 keyboard driver
4 * Copyright (c) 1999-2002 Vojtech Pavlik
8 * This program is free software; you can redistribute it and/or modify it
9 * under the terms of the GNU General Public License version 2 as published by
10 * the Free Software Foundation.
14 * This driver can handle standard AT keyboards and PS/2 keyboards in
15 * Translated and Raw Set 2 and Set 3, as well as AT keyboards on dumb
16 * input-only controllers and AT keyboards connected over a one way RS232
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>
30 #include <linux/mutex.h>
32 #define DRIVER_DESC "AT and PS/2 keyboard driver"
34 MODULE_AUTHOR("Vojtech Pavlik <vojtech@suse.cz>");
35 MODULE_DESCRIPTION(DRIVER_DESC);
36 MODULE_LICENSE("GPL");
38 static int atkbd_set = 2;
39 module_param_named(set, atkbd_set, int, 0);
40 MODULE_PARM_DESC(set, "Select keyboard code set (2 = default, 3 = PS/2 native)");
42 #if defined(__i386__) || defined(__x86_64__) || defined(__hppa__)
43 static int atkbd_reset;
45 static int atkbd_reset = 1;
47 module_param_named(reset, atkbd_reset, bool, 0);
48 MODULE_PARM_DESC(reset, "Reset keyboard during initialization");
50 static int atkbd_softrepeat;
51 module_param_named(softrepeat, atkbd_softrepeat, bool, 0);
52 MODULE_PARM_DESC(softrepeat, "Use software keyboard repeat");
54 static int atkbd_softraw = 1;
55 module_param_named(softraw, atkbd_softraw, bool, 0);
56 MODULE_PARM_DESC(softraw, "Use software generated rawmode");
58 static int atkbd_scroll;
59 module_param_named(scroll, atkbd_scroll, bool, 0);
60 MODULE_PARM_DESC(scroll, "Enable scroll-wheel on MS Office and similar keyboards");
62 static int atkbd_extra;
63 module_param_named(extra, atkbd_extra, bool, 0);
64 MODULE_PARM_DESC(extra, "Enable extra LEDs and keys on IBM RapidAcces, EzKey and similar keyboards");
67 * Scancode to keycode tables. These are just the default setting, and
68 * are loadable via an userland utility.
71 static unsigned char atkbd_set2_keycode[512] = {
73 #ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES
75 /* XXX: need a more general approach */
77 #include "hpps2atkbd.h" /* include the keyboard scancodes */
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,
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,
92 159, 0,115, 0,164, 0, 0,116,158, 0,172,166, 0, 0, 0,142,
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,
102 static unsigned char atkbd_set3_keycode[512] = {
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,
113 184,185,186,187, 74, 94, 92, 93, 0, 0, 0,125,126,127,112, 0,
114 0,139,172,163,165,115,152,172,166,140,160,154,113,114,167,168,
118 static unsigned char atkbd_unxlate_table[128] = {
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
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
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
149 #define ATKBD_RET_HANJA 0xf1
150 #define ATKBD_RET_HANGEUL 0xf2
151 #define ATKBD_RET_ERR 0xff
153 #define ATKBD_KEY_UNKNOWN 0
154 #define ATKBD_KEY_NULL 255
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
164 #define ATKBD_SPECIAL 248
166 #define ATKBD_LED_EVENT_BIT 0
167 #define ATKBD_REP_EVENT_BIT 1
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
177 unsigned char keycode;
179 } atkbd_scroll_keys[] = {
180 { ATKBD_SCR_1, 0xc5 },
181 { ATKBD_SCR_2, 0x9d },
182 { ATKBD_SCR_4, 0xa4 },
183 { ATKBD_SCR_8, 0x9b },
184 { ATKBD_SCR_CLICK, 0xe0 },
185 { ATKBD_SCR_LEFT, 0xcb },
186 { ATKBD_SCR_RIGHT, 0xd2 },
190 * The atkbd control structure
195 struct ps2dev ps2dev;
196 struct input_dev *dev;
198 /* Written only during init */
203 unsigned char keycode[512];
205 unsigned char translated;
208 unsigned char softrepeat;
209 unsigned char softraw;
210 unsigned char scroll;
211 unsigned char enabled;
213 /* Accessed only from interrupt */
215 unsigned char resend;
216 unsigned char release;
217 unsigned long xl_bit;
220 unsigned long err_count;
222 struct delayed_work event_work;
223 unsigned long event_jiffies;
224 struct mutex event_mutex;
225 unsigned long event_mask;
228 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
229 ssize_t (*handler)(struct atkbd *, char *));
230 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
231 ssize_t (*handler)(struct atkbd *, const char *, size_t));
232 #define ATKBD_DEFINE_ATTR(_name) \
233 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
234 static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \
235 static ssize_t atkbd_do_show_##_name(struct device *d, \
236 struct device_attribute *attr, char *b) \
238 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
240 static ssize_t atkbd_do_set_##_name(struct device *d, \
241 struct device_attribute *attr, const char *b, size_t s) \
243 return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name); \
245 static struct device_attribute atkbd_attr_##_name = \
246 __ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name);
248 ATKBD_DEFINE_ATTR(extra);
249 ATKBD_DEFINE_ATTR(scroll);
250 ATKBD_DEFINE_ATTR(set);
251 ATKBD_DEFINE_ATTR(softrepeat);
252 ATKBD_DEFINE_ATTR(softraw);
254 #define ATKBD_DEFINE_RO_ATTR(_name) \
255 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
256 static ssize_t atkbd_do_show_##_name(struct device *d, \
257 struct device_attribute *attr, char *b) \
259 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
261 static struct device_attribute atkbd_attr_##_name = \
262 __ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL);
264 ATKBD_DEFINE_RO_ATTR(err_count);
266 static struct attribute *atkbd_attributes[] = {
267 &atkbd_attr_extra.attr,
268 &atkbd_attr_scroll.attr,
269 &atkbd_attr_set.attr,
270 &atkbd_attr_softrepeat.attr,
271 &atkbd_attr_softraw.attr,
272 &atkbd_attr_err_count.attr,
276 static struct attribute_group atkbd_attribute_group = {
277 .attrs = atkbd_attributes,
280 static const unsigned int xl_table[] = {
281 ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK,
282 ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL,
286 * Checks if we should mangle the scancode to extract 'release' bit
287 * in translated mode.
289 static int atkbd_need_xlate(unsigned long xl_bit, unsigned char code)
293 if (code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1)
296 for (i = 0; i < ARRAY_SIZE(xl_table); i++)
297 if (code == xl_table[i])
298 return test_bit(i, &xl_bit);
304 * Calculates new value of xl_bit so the driver can distinguish
305 * between make/break pair of scancodes for select keys and PS/2
306 * protocol responses.
308 static void atkbd_calculate_xl_bit(struct atkbd *atkbd, unsigned char code)
312 for (i = 0; i < ARRAY_SIZE(xl_table); i++) {
313 if (!((code ^ xl_table[i]) & 0x7f)) {
315 __clear_bit(i, &atkbd->xl_bit);
317 __set_bit(i, &atkbd->xl_bit);
324 * Encode the scancode, 0xe0 prefix, and high bit into a single integer,
325 * keeping kernel 2.4 compatibility for set 2
327 static unsigned int atkbd_compat_scancode(struct atkbd *atkbd, unsigned int code)
329 if (atkbd->set == 3) {
330 if (atkbd->emul == 1)
333 code = (code & 0x7f) | ((code & 0x80) << 1);
334 if (atkbd->emul == 1)
342 * atkbd_interrupt(). Here takes place processing of data received from
343 * the keyboard into events.
346 static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data,
349 struct atkbd *atkbd = serio_get_drvdata(serio);
350 struct input_dev *dev = atkbd->dev;
351 unsigned int code = data;
352 int scroll = 0, hscroll = 0, click = -1, add_release_event = 0;
354 unsigned char keycode;
357 printk(KERN_DEBUG "atkbd.c: Received %02x flags %02x\n", data, flags);
360 #if !defined(__i386__) && !defined (__x86_64__)
361 if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) {
362 printk(KERN_WARNING "atkbd.c: frame/parity error: %02x\n", flags);
363 serio_write(serio, ATKBD_CMD_RESEND);
368 if (!flags && data == ATKBD_RET_ACK)
372 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_ACK))
373 if (ps2_handle_ack(&atkbd->ps2dev, data))
376 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_CMD))
377 if (ps2_handle_response(&atkbd->ps2dev, data))
383 input_event(dev, EV_MSC, MSC_RAW, code);
385 if (atkbd->translated) {
387 if (atkbd->emul || atkbd_need_xlate(atkbd->xl_bit, code)) {
388 atkbd->release = code >> 7;
393 atkbd_calculate_xl_bit(atkbd, data);
399 serio_reconnect(atkbd->ps2dev.serio);
401 case ATKBD_RET_EMUL0:
404 case ATKBD_RET_EMUL1:
407 case ATKBD_RET_RELEASE:
412 if (printk_ratelimit())
413 printk(KERN_WARNING "atkbd.c: Spurious %s on %s. "
414 "Some program might be trying access hardware directly.\n",
415 data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys);
417 case ATKBD_RET_HANGEUL:
418 case ATKBD_RET_HANJA:
420 * These keys do not report release and thus need to be
423 add_release_event = 1;
428 printk(KERN_DEBUG "atkbd.c: Keyboard on %s reports too many keys pressed.\n", serio->phys);
433 code = atkbd_compat_scancode(atkbd, code);
435 if (atkbd->emul && --atkbd->emul)
438 keycode = atkbd->keycode[code];
440 if (keycode != ATKBD_KEY_NULL)
441 input_event(dev, EV_MSC, MSC_SCAN, code);
446 case ATKBD_KEY_UNKNOWN:
448 "atkbd.c: Unknown key %s (%s set %d, code %#x on %s).\n",
449 atkbd->release ? "released" : "pressed",
450 atkbd->translated ? "translated" : "raw",
451 atkbd->set, code, serio->phys);
453 "atkbd.c: Use 'setkeycodes %s%02x <keycode>' to make it known.\n",
454 code & 0x80 ? "e0" : "", code & 0x7f);
458 scroll = 1 - atkbd->release * 2;
461 scroll = 2 - atkbd->release * 4;
464 scroll = 4 - atkbd->release * 8;
467 scroll = 8 - atkbd->release * 16;
469 case ATKBD_SCR_CLICK:
470 click = !atkbd->release;
475 case ATKBD_SCR_RIGHT:
479 if (atkbd->release) {
482 } else if (!atkbd->softrepeat && test_bit(keycode, dev->key)) {
483 /* Workaround Toshiba laptop multiple keypress */
484 value = time_before(jiffies, atkbd->time) && atkbd->last == code ? 1 : 2;
488 atkbd->time = jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]) / 2;
491 input_event(dev, EV_KEY, keycode, value);
494 if (value && add_release_event) {
495 input_report_key(dev, keycode, 0);
502 input_report_key(dev, BTN_MIDDLE, click);
503 input_report_rel(dev, REL_WHEEL, scroll);
504 input_report_rel(dev, REL_HWHEEL, hscroll);
513 static int atkbd_set_repeat_rate(struct atkbd *atkbd)
515 const short period[32] =
516 { 33, 37, 42, 46, 50, 54, 58, 63, 67, 75, 83, 92, 100, 109, 116, 125,
517 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 };
518 const short delay[4] =
519 { 250, 500, 750, 1000 };
521 struct input_dev *dev = atkbd->dev;
525 while (i < ARRAY_SIZE(period) - 1 && period[i] < dev->rep[REP_PERIOD])
527 dev->rep[REP_PERIOD] = period[i];
529 while (j < ARRAY_SIZE(delay) - 1 && delay[j] < dev->rep[REP_DELAY])
531 dev->rep[REP_DELAY] = delay[j];
533 param = i | (j << 5);
534 return ps2_command(&atkbd->ps2dev, ¶m, ATKBD_CMD_SETREP);
537 static int atkbd_set_leds(struct atkbd *atkbd)
539 struct input_dev *dev = atkbd->dev;
540 unsigned char param[2];
542 param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0)
543 | (test_bit(LED_NUML, dev->led) ? 2 : 0)
544 | (test_bit(LED_CAPSL, dev->led) ? 4 : 0);
545 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS))
550 param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0)
551 | (test_bit(LED_SLEEP, dev->led) ? 0x02 : 0)
552 | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0)
553 | (test_bit(LED_MISC, dev->led) ? 0x10 : 0)
554 | (test_bit(LED_MUTE, dev->led) ? 0x20 : 0);
555 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS))
563 * atkbd_event_work() is used to complete processing of events that
564 * can not be processed by input_event() which is often called from
568 static void atkbd_event_work(struct work_struct *work)
570 struct atkbd *atkbd = container_of(work, struct atkbd, event_work.work);
572 mutex_lock(&atkbd->event_mutex);
574 if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask))
575 atkbd_set_leds(atkbd);
577 if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask))
578 atkbd_set_repeat_rate(atkbd);
580 mutex_unlock(&atkbd->event_mutex);
584 * Schedule switch for execution. We need to throttle requests,
585 * otherwise keyboard may become unresponsive.
587 static void atkbd_schedule_event_work(struct atkbd *atkbd, int event_bit)
589 unsigned long delay = msecs_to_jiffies(50);
591 if (time_after(jiffies, atkbd->event_jiffies + delay))
594 atkbd->event_jiffies = jiffies;
595 set_bit(event_bit, &atkbd->event_mask);
597 schedule_delayed_work(&atkbd->event_work, delay);
601 * Event callback from the input module. Events that change the state of
602 * the hardware are processed here. If action can not be performed in
603 * interrupt context it is offloaded to atkbd_event_work.
606 static int atkbd_event(struct input_dev *dev,
607 unsigned int type, unsigned int code, int value)
609 struct atkbd *atkbd = input_get_drvdata(dev);
617 atkbd_schedule_event_work(atkbd, ATKBD_LED_EVENT_BIT);
621 if (!atkbd->softrepeat)
622 atkbd_schedule_event_work(atkbd, ATKBD_REP_EVENT_BIT);
630 * atkbd_enable() signals that interrupt handler is allowed to
631 * generate input events.
634 static inline void atkbd_enable(struct atkbd *atkbd)
636 serio_pause_rx(atkbd->ps2dev.serio);
638 serio_continue_rx(atkbd->ps2dev.serio);
642 * atkbd_disable() tells input handler that all incoming data except
643 * for ACKs and command response should be dropped.
646 static inline void atkbd_disable(struct atkbd *atkbd)
648 serio_pause_rx(atkbd->ps2dev.serio);
650 serio_continue_rx(atkbd->ps2dev.serio);
654 * atkbd_probe() probes for an AT keyboard on a serio port.
657 static int atkbd_probe(struct atkbd *atkbd)
659 struct ps2dev *ps2dev = &atkbd->ps2dev;
660 unsigned char param[2];
663 * Some systems, where the bit-twiddling when testing the io-lines of the
664 * controller may confuse the keyboard need a full reset of the keyboard. On
665 * these systems the BIOS also usually doesn't do it for us.
669 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT))
670 printk(KERN_WARNING "atkbd.c: keyboard reset failed on %s\n", ps2dev->serio->phys);
673 * Then we check the keyboard ID. We should get 0xab83 under normal conditions.
674 * Some keyboards report different values, but the first byte is always 0xab or
675 * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this
676 * should make sure we don't try to set the LEDs on it.
679 param[0] = param[1] = 0xa5; /* initialize with invalid values */
680 if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) {
683 * If the get ID command failed, we check if we can at least set the LEDs on
684 * the keyboard. This should work on every keyboard out there. It also turns
685 * the LEDs off, which we want anyway.
688 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
694 if (!ps2_is_keyboard_id(param[0]))
697 atkbd->id = (param[0] << 8) | param[1];
699 if (atkbd->id == 0xaca1 && atkbd->translated) {
700 printk(KERN_ERR "atkbd.c: NCD terminal keyboards are only supported on non-translating\n");
701 printk(KERN_ERR "atkbd.c: controllers. Use i8042.direct=1 to disable translation.\n");
709 * atkbd_select_set checks if a keyboard has a working Set 3 support, and
710 * sets it into that. Unfortunately there are keyboards that can be switched
711 * to Set 3, but don't work well in that (BTC Multimedia ...)
714 static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra)
716 struct ps2dev *ps2dev = &atkbd->ps2dev;
717 unsigned char param[2];
721 * For known special keyboards we can go ahead and set the correct set.
722 * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and
723 * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards.
726 if (atkbd->translated)
729 if (atkbd->id == 0xaca1) {
731 ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET);
737 if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) {
746 if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) {
747 atkbd->id = param[0] << 8 | param[1];
752 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
756 if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET))
761 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
765 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR);
770 static int atkbd_activate(struct atkbd *atkbd)
772 struct ps2dev *ps2dev = &atkbd->ps2dev;
773 unsigned char param[1];
776 * Set the LEDs to a defined state.
780 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
784 * Set autorepeat to fastest possible.
788 if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP))
792 * Enable the keyboard to receive keystrokes.
795 if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) {
796 printk(KERN_ERR "atkbd.c: Failed to enable keyboard on %s\n",
797 ps2dev->serio->phys);
805 * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a
809 static void atkbd_cleanup(struct serio *serio)
811 struct atkbd *atkbd = serio_get_drvdata(serio);
812 ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_BAT);
817 * atkbd_disconnect() closes and frees.
820 static void atkbd_disconnect(struct serio *serio)
822 struct atkbd *atkbd = serio_get_drvdata(serio);
824 atkbd_disable(atkbd);
826 /* make sure we don't have a command in flight */
827 synchronize_sched(); /* Allow atkbd_interrupt()s to complete. */
828 flush_scheduled_work();
830 sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
831 input_unregister_device(atkbd->dev);
833 serio_set_drvdata(serio, NULL);
839 * atkbd_set_keycode_table() initializes keyboard's keycode table
840 * according to the selected scancode set
843 static void atkbd_set_keycode_table(struct atkbd *atkbd)
847 memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
849 if (atkbd->translated) {
850 for (i = 0; i < 128; i++) {
851 atkbd->keycode[i] = atkbd_set2_keycode[atkbd_unxlate_table[i]];
852 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[atkbd_unxlate_table[i] | 0x80];
854 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
855 if ((atkbd_unxlate_table[i] | 0x80) == atkbd_scroll_keys[j].set2)
856 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
858 } else if (atkbd->set == 3) {
859 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
861 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
864 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++)
865 atkbd->keycode[atkbd_scroll_keys[i].set2] = atkbd_scroll_keys[i].keycode;
868 atkbd->keycode[atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL)] = KEY_HANGUEL;
869 atkbd->keycode[atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA)] = KEY_HANJA;
873 * atkbd_set_device_attrs() sets up keyboard's input device structure
876 static void atkbd_set_device_attrs(struct atkbd *atkbd)
878 struct input_dev *input_dev = atkbd->dev;
882 snprintf(atkbd->name, sizeof(atkbd->name),
883 "AT Set 2 Extra keyboard");
885 snprintf(atkbd->name, sizeof(atkbd->name),
886 "AT %s Set %d keyboard",
887 atkbd->translated ? "Translated" : "Raw", atkbd->set);
889 snprintf(atkbd->phys, sizeof(atkbd->phys),
890 "%s/input0", atkbd->ps2dev.serio->phys);
892 input_dev->name = atkbd->name;
893 input_dev->phys = atkbd->phys;
894 input_dev->id.bustype = BUS_I8042;
895 input_dev->id.vendor = 0x0001;
896 input_dev->id.product = atkbd->translated ? 1 : atkbd->set;
897 input_dev->id.version = atkbd->id;
898 input_dev->event = atkbd_event;
899 input_dev->dev.parent = &atkbd->ps2dev.serio->dev;
901 input_set_drvdata(input_dev, atkbd);
903 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP) | BIT(EV_MSC);
906 input_dev->evbit[0] |= BIT(EV_LED);
907 input_dev->ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL);
911 input_dev->ledbit[0] |= BIT(LED_COMPOSE) | BIT(LED_SUSPEND) |
912 BIT(LED_SLEEP) | BIT(LED_MUTE) | BIT(LED_MISC);
914 if (!atkbd->softrepeat) {
915 input_dev->rep[REP_DELAY] = 250;
916 input_dev->rep[REP_PERIOD] = 33;
919 input_dev->mscbit[0] = atkbd->softraw ? BIT(MSC_SCAN) : BIT(MSC_RAW) | BIT(MSC_SCAN);
922 input_dev->evbit[0] |= BIT(EV_REL);
923 input_dev->relbit[0] = BIT(REL_WHEEL) | BIT(REL_HWHEEL);
924 set_bit(BTN_MIDDLE, input_dev->keybit);
927 input_dev->keycode = atkbd->keycode;
928 input_dev->keycodesize = sizeof(unsigned char);
929 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
931 for (i = 0; i < 512; i++)
932 if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL)
933 set_bit(atkbd->keycode[i], input_dev->keybit);
937 * atkbd_connect() is called when the serio module finds an interface
938 * that isn't handled yet by an appropriate device driver. We check if
939 * there is an AT keyboard out there and if yes, we register ourselves
940 * to the input module.
943 static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
946 struct input_dev *dev;
949 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL);
950 dev = input_allocate_device();
955 ps2_init(&atkbd->ps2dev, serio);
956 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work);
957 mutex_init(&atkbd->event_mutex);
959 switch (serio->id.type) {
962 atkbd->translated = 1;
969 atkbd->softraw = atkbd_softraw;
970 atkbd->softrepeat = atkbd_softrepeat;
971 atkbd->scroll = atkbd_scroll;
973 if (atkbd->softrepeat)
976 serio_set_drvdata(serio, atkbd);
978 err = serio_open(serio, drv);
984 if (atkbd_probe(atkbd)) {
989 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
990 atkbd_activate(atkbd);
997 atkbd_set_keycode_table(atkbd);
998 atkbd_set_device_attrs(atkbd);
1000 err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group);
1004 atkbd_enable(atkbd);
1006 err = input_register_device(atkbd->dev);
1012 fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
1013 fail3: serio_close(serio);
1014 fail2: serio_set_drvdata(serio, NULL);
1015 fail1: input_free_device(dev);
1021 * atkbd_reconnect() tries to restore keyboard into a sane state and is
1022 * most likely called on resume.
1025 static int atkbd_reconnect(struct serio *serio)
1027 struct atkbd *atkbd = serio_get_drvdata(serio);
1028 struct serio_driver *drv = serio->drv;
1030 if (!atkbd || !drv) {
1031 printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n");
1035 atkbd_disable(atkbd);
1038 if (atkbd_probe(atkbd))
1040 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
1043 atkbd_activate(atkbd);
1046 * Restore repeat rate and LEDs (that were reset by atkbd_activate)
1047 * to pre-resume state
1049 if (!atkbd->softrepeat)
1050 atkbd_set_repeat_rate(atkbd);
1051 atkbd_set_leds(atkbd);
1054 atkbd_enable(atkbd);
1059 static struct serio_device_id atkbd_serio_ids[] = {
1067 .type = SERIO_8042_XL,
1073 .type = SERIO_RS232,
1074 .proto = SERIO_PS2SER,
1081 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
1083 static struct serio_driver atkbd_drv = {
1087 .description = DRIVER_DESC,
1088 .id_table = atkbd_serio_ids,
1089 .interrupt = atkbd_interrupt,
1090 .connect = atkbd_connect,
1091 .reconnect = atkbd_reconnect,
1092 .disconnect = atkbd_disconnect,
1093 .cleanup = atkbd_cleanup,
1096 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
1097 ssize_t (*handler)(struct atkbd *, char *))
1099 struct serio *serio = to_serio_port(dev);
1102 retval = serio_pin_driver(serio);
1106 if (serio->drv != &atkbd_drv) {
1111 retval = handler((struct atkbd *)serio_get_drvdata(serio), buf);
1114 serio_unpin_driver(serio);
1118 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
1119 ssize_t (*handler)(struct atkbd *, const char *, size_t))
1121 struct serio *serio = to_serio_port(dev);
1122 struct atkbd *atkbd;
1125 retval = serio_pin_driver(serio);
1129 if (serio->drv != &atkbd_drv) {
1134 atkbd = serio_get_drvdata(serio);
1135 atkbd_disable(atkbd);
1136 retval = handler(atkbd, buf, count);
1137 atkbd_enable(atkbd);
1140 serio_unpin_driver(serio);
1144 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
1146 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
1149 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
1151 struct input_dev *old_dev, *new_dev;
1152 unsigned long value;
1155 unsigned char old_extra, old_set;
1160 value = simple_strtoul(buf, &rest, 10);
1161 if (*rest || value > 1)
1164 if (atkbd->extra != value) {
1166 * Since device's properties will change we need to
1167 * unregister old device. But allocate and register
1168 * new one first to make sure we have it.
1170 old_dev = atkbd->dev;
1171 old_extra = atkbd->extra;
1172 old_set = atkbd->set;
1174 new_dev = input_allocate_device();
1178 atkbd->dev = new_dev;
1179 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
1180 atkbd_activate(atkbd);
1181 atkbd_set_keycode_table(atkbd);
1182 atkbd_set_device_attrs(atkbd);
1184 err = input_register_device(atkbd->dev);
1186 input_free_device(new_dev);
1188 atkbd->dev = old_dev;
1189 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1190 atkbd_set_keycode_table(atkbd);
1191 atkbd_set_device_attrs(atkbd);
1195 input_unregister_device(old_dev);
1201 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
1203 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
1206 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
1208 struct input_dev *old_dev, *new_dev;
1209 unsigned long value;
1212 unsigned char old_scroll;
1214 value = simple_strtoul(buf, &rest, 10);
1215 if (*rest || value > 1)
1218 if (atkbd->scroll != value) {
1219 old_dev = atkbd->dev;
1220 old_scroll = atkbd->scroll;
1222 new_dev = input_allocate_device();
1226 atkbd->dev = new_dev;
1227 atkbd->scroll = value;
1228 atkbd_set_keycode_table(atkbd);
1229 atkbd_set_device_attrs(atkbd);
1231 err = input_register_device(atkbd->dev);
1233 input_free_device(new_dev);
1235 atkbd->scroll = old_scroll;
1236 atkbd->dev = old_dev;
1237 atkbd_set_keycode_table(atkbd);
1238 atkbd_set_device_attrs(atkbd);
1242 input_unregister_device(old_dev);
1247 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
1249 return sprintf(buf, "%d\n", atkbd->set);
1252 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
1254 struct input_dev *old_dev, *new_dev;
1255 unsigned long value;
1258 unsigned char old_set, old_extra;
1263 value = simple_strtoul(buf, &rest, 10);
1264 if (*rest || (value != 2 && value != 3))
1267 if (atkbd->set != value) {
1268 old_dev = atkbd->dev;
1269 old_extra = atkbd->extra;
1270 old_set = atkbd->set;
1272 new_dev = input_allocate_device();
1276 atkbd->dev = new_dev;
1277 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra);
1278 atkbd_activate(atkbd);
1279 atkbd_set_keycode_table(atkbd);
1280 atkbd_set_device_attrs(atkbd);
1282 err = input_register_device(atkbd->dev);
1284 input_free_device(new_dev);
1286 atkbd->dev = old_dev;
1287 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1288 atkbd_set_keycode_table(atkbd);
1289 atkbd_set_device_attrs(atkbd);
1293 input_unregister_device(old_dev);
1298 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
1300 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
1303 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
1305 struct input_dev *old_dev, *new_dev;
1306 unsigned long value;
1309 unsigned char old_softrepeat, old_softraw;
1314 value = simple_strtoul(buf, &rest, 10);
1315 if (*rest || value > 1)
1318 if (atkbd->softrepeat != value) {
1319 old_dev = atkbd->dev;
1320 old_softrepeat = atkbd->softrepeat;
1321 old_softraw = atkbd->softraw;
1323 new_dev = input_allocate_device();
1327 atkbd->dev = new_dev;
1328 atkbd->softrepeat = value;
1329 if (atkbd->softrepeat)
1331 atkbd_set_device_attrs(atkbd);
1333 err = input_register_device(atkbd->dev);
1335 input_free_device(new_dev);
1337 atkbd->dev = old_dev;
1338 atkbd->softrepeat = old_softrepeat;
1339 atkbd->softraw = old_softraw;
1340 atkbd_set_device_attrs(atkbd);
1344 input_unregister_device(old_dev);
1350 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
1352 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
1355 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
1357 struct input_dev *old_dev, *new_dev;
1358 unsigned long value;
1361 unsigned char old_softraw;
1363 value = simple_strtoul(buf, &rest, 10);
1364 if (*rest || value > 1)
1367 if (atkbd->softraw != value) {
1368 old_dev = atkbd->dev;
1369 old_softraw = atkbd->softraw;
1371 new_dev = input_allocate_device();
1375 atkbd->dev = new_dev;
1376 atkbd->softraw = value;
1377 atkbd_set_device_attrs(atkbd);
1379 err = input_register_device(atkbd->dev);
1381 input_free_device(new_dev);
1383 atkbd->dev = old_dev;
1384 atkbd->softraw = old_softraw;
1385 atkbd_set_device_attrs(atkbd);
1389 input_unregister_device(old_dev);
1394 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
1396 return sprintf(buf, "%lu\n", atkbd->err_count);
1400 static int __init atkbd_init(void)
1402 return serio_register_driver(&atkbd_drv);
1405 static void __exit atkbd_exit(void)
1407 serio_unregister_driver(&atkbd_drv);
1410 module_init(atkbd_init);
1411 module_exit(atkbd_exit);