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");
66 __obsolete_setup("atkbd_set=");
67 __obsolete_setup("atkbd_reset");
68 __obsolete_setup("atkbd_softrepeat=");
71 * Scancode to keycode tables. These are just the default setting, and
72 * are loadable via an userland utility.
75 static unsigned char atkbd_set2_keycode[512] = {
77 #ifdef CONFIG_KEYBOARD_ATKBD_HP_KEYCODES
79 /* XXX: need a more general approach */
81 #include "hpps2atkbd.h" /* include the keyboard scancodes */
84 0, 67, 65, 63, 61, 59, 60, 88, 0, 68, 66, 64, 62, 15, 41,117,
85 0, 56, 42, 93, 29, 16, 2, 0, 0, 0, 44, 31, 30, 17, 3, 0,
86 0, 46, 45, 32, 18, 5, 4, 95, 0, 57, 47, 33, 20, 19, 6,183,
87 0, 49, 48, 35, 34, 21, 7,184, 0, 0, 50, 36, 22, 8, 9,185,
88 0, 51, 37, 23, 24, 11, 10, 0, 0, 52, 53, 38, 39, 25, 12, 0,
89 0, 89, 40, 0, 26, 13, 0, 0, 58, 54, 28, 27, 0, 43, 0, 85,
90 0, 86, 91, 90, 92, 0, 14, 94, 0, 79,124, 75, 71,121, 0, 0,
91 82, 83, 80, 76, 77, 72, 1, 69, 87, 78, 81, 74, 55, 73, 70, 99,
93 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0,
94 217,100,255, 0, 97,165, 0, 0,156, 0, 0, 0, 0, 0, 0,125,
95 173,114, 0,113, 0, 0, 0,126,128, 0, 0,140, 0, 0, 0,127,
96 159, 0,115, 0,164, 0, 0,116,158, 0,150,166, 0, 0, 0,142,
97 157, 0, 0, 0, 0, 0, 0, 0,155, 0, 98, 0, 0,163, 0, 0,
98 226, 0, 0, 0, 0, 0, 0, 0, 0,255, 96, 0, 0, 0,143, 0,
99 0, 0, 0, 0, 0, 0, 0, 0, 0,107, 0,105,102, 0, 0,112,
100 110,111,108,112,106,103, 0,119, 0,118,109, 0, 99,104,119, 0,
106 static unsigned char atkbd_set3_keycode[512] = {
108 0, 0, 0, 0, 0, 0, 0, 59, 1,138,128,129,130, 15, 41, 60,
109 131, 29, 42, 86, 58, 16, 2, 61,133, 56, 44, 31, 30, 17, 3, 62,
110 134, 46, 45, 32, 18, 5, 4, 63,135, 57, 47, 33, 20, 19, 6, 64,
111 136, 49, 48, 35, 34, 21, 7, 65,137,100, 50, 36, 22, 8, 9, 66,
112 125, 51, 37, 23, 24, 11, 10, 67,126, 52, 53, 38, 39, 25, 12, 68,
113 113,114, 40, 43, 26, 13, 87, 99, 97, 54, 28, 27, 43, 43, 88, 70,
114 108,105,119,103,111,107, 14,110, 0, 79,106, 75, 71,109,102,104,
115 82, 83, 80, 76, 77, 72, 69, 98, 0, 96, 81, 0, 78, 73, 55,183,
117 184,185,186,187, 74, 94, 92, 93, 0, 0, 0,125,126,127,112, 0,
118 0,139,150,163,165,115,152,150,166,140,160,154,113,114,167,168,
122 static unsigned char atkbd_unxlate_table[128] = {
123 0,118, 22, 30, 38, 37, 46, 54, 61, 62, 70, 69, 78, 85,102, 13,
124 21, 29, 36, 45, 44, 53, 60, 67, 68, 77, 84, 91, 90, 20, 28, 27,
125 35, 43, 52, 51, 59, 66, 75, 76, 82, 14, 18, 93, 26, 34, 33, 42,
126 50, 49, 58, 65, 73, 74, 89,124, 17, 41, 88, 5, 6, 4, 12, 3,
127 11, 2, 10, 1, 9,119,126,108,117,125,123,107,115,116,121,105,
128 114,122,112,113,127, 96, 97,120, 7, 15, 23, 31, 39, 47, 55, 63,
129 71, 79, 86, 94, 8, 16, 24, 32, 40, 48, 56, 64, 72, 80, 87,111,
130 19, 25, 57, 81, 83, 92, 95, 98, 99,100,101,103,104,106,109,110
133 #define ATKBD_CMD_SETLEDS 0x10ed
134 #define ATKBD_CMD_GSCANSET 0x11f0
135 #define ATKBD_CMD_SSCANSET 0x10f0
136 #define ATKBD_CMD_GETID 0x02f2
137 #define ATKBD_CMD_SETREP 0x10f3
138 #define ATKBD_CMD_ENABLE 0x00f4
139 #define ATKBD_CMD_RESET_DIS 0x00f5
140 #define ATKBD_CMD_SETALL_MBR 0x00fa
141 #define ATKBD_CMD_RESET_BAT 0x02ff
142 #define ATKBD_CMD_RESEND 0x00fe
143 #define ATKBD_CMD_EX_ENABLE 0x10ea
144 #define ATKBD_CMD_EX_SETLEDS 0x20eb
145 #define ATKBD_CMD_OK_GETID 0x02e8
147 #define ATKBD_RET_ACK 0xfa
148 #define ATKBD_RET_NAK 0xfe
149 #define ATKBD_RET_BAT 0xaa
150 #define ATKBD_RET_EMUL0 0xe0
151 #define ATKBD_RET_EMUL1 0xe1
152 #define ATKBD_RET_RELEASE 0xf0
153 #define ATKBD_RET_HANJA 0xf1
154 #define ATKBD_RET_HANGEUL 0xf2
155 #define ATKBD_RET_ERR 0xff
157 #define ATKBD_KEY_UNKNOWN 0
158 #define ATKBD_KEY_NULL 255
160 #define ATKBD_SCR_1 254
161 #define ATKBD_SCR_2 253
162 #define ATKBD_SCR_4 252
163 #define ATKBD_SCR_8 251
164 #define ATKBD_SCR_CLICK 250
165 #define ATKBD_SCR_LEFT 249
166 #define ATKBD_SCR_RIGHT 248
168 #define ATKBD_SPECIAL 248
170 #define ATKBD_LED_EVENT_BIT 0
171 #define ATKBD_REP_EVENT_BIT 1
173 #define ATKBD_XL_ERR 0x01
174 #define ATKBD_XL_BAT 0x02
175 #define ATKBD_XL_ACK 0x04
176 #define ATKBD_XL_NAK 0x08
177 #define ATKBD_XL_HANGEUL 0x10
178 #define ATKBD_XL_HANJA 0x20
181 unsigned char keycode;
183 } atkbd_scroll_keys[] = {
184 { ATKBD_SCR_1, 0xc5 },
185 { ATKBD_SCR_2, 0x9d },
186 { ATKBD_SCR_4, 0xa4 },
187 { ATKBD_SCR_8, 0x9b },
188 { ATKBD_SCR_CLICK, 0xe0 },
189 { ATKBD_SCR_LEFT, 0xcb },
190 { ATKBD_SCR_RIGHT, 0xd2 },
194 * The atkbd control structure
199 struct ps2dev ps2dev;
200 struct input_dev *dev;
202 /* Written only during init */
207 unsigned char keycode[512];
209 unsigned char translated;
212 unsigned char softrepeat;
213 unsigned char softraw;
214 unsigned char scroll;
215 unsigned char enabled;
217 /* Accessed only from interrupt */
219 unsigned char resend;
220 unsigned char release;
221 unsigned long xl_bit;
225 struct work_struct event_work;
226 struct mutex event_mutex;
227 unsigned long event_mask;
230 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
231 ssize_t (*handler)(struct atkbd *, char *));
232 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
233 ssize_t (*handler)(struct atkbd *, const char *, size_t));
234 #define ATKBD_DEFINE_ATTR(_name) \
235 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
236 static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \
237 static ssize_t atkbd_do_show_##_name(struct device *d, struct device_attribute *attr, char *b) \
239 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
241 static ssize_t atkbd_do_set_##_name(struct device *d, 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 static const unsigned int xl_table[] = {
255 ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK,
256 ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL,
260 * Checks if we should mangle the scancode to extract 'release' bit
261 * in translated mode.
263 static int atkbd_need_xlate(unsigned long xl_bit, unsigned char code)
267 if (code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1)
270 for (i = 0; i < ARRAY_SIZE(xl_table); i++)
271 if (code == xl_table[i])
272 return test_bit(i, &xl_bit);
278 * Calculates new value of xl_bit so the driver can distinguish
279 * between make/break pair of scancodes for select keys and PS/2
280 * protocol responses.
282 static void atkbd_calculate_xl_bit(struct atkbd *atkbd, unsigned char code)
286 for (i = 0; i < ARRAY_SIZE(xl_table); i++) {
287 if (!((code ^ xl_table[i]) & 0x7f)) {
289 __clear_bit(i, &atkbd->xl_bit);
291 __set_bit(i, &atkbd->xl_bit);
298 * Encode the scancode, 0xe0 prefix, and high bit into a single integer,
299 * keeping kernel 2.4 compatibility for set 2
301 static unsigned int atkbd_compat_scancode(struct atkbd *atkbd, unsigned int code)
303 if (atkbd->set == 3) {
304 if (atkbd->emul == 1)
307 code = (code & 0x7f) | ((code & 0x80) << 1);
308 if (atkbd->emul == 1)
316 * atkbd_interrupt(). Here takes place processing of data received from
317 * the keyboard into events.
320 static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data,
321 unsigned int flags, struct pt_regs *regs)
323 struct atkbd *atkbd = serio_get_drvdata(serio);
324 struct input_dev *dev = atkbd->dev;
325 unsigned int code = data;
326 int scroll = 0, hscroll = 0, click = -1, add_release_event = 0;
328 unsigned char keycode;
331 printk(KERN_DEBUG "atkbd.c: Received %02x flags %02x\n", data, flags);
334 #if !defined(__i386__) && !defined (__x86_64__)
335 if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) {
336 printk(KERN_WARNING "atkbd.c: frame/parity error: %02x\n", flags);
337 serio_write(serio, ATKBD_CMD_RESEND);
342 if (!flags && data == ATKBD_RET_ACK)
346 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_ACK))
347 if (ps2_handle_ack(&atkbd->ps2dev, data))
350 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_CMD))
351 if (ps2_handle_response(&atkbd->ps2dev, data))
357 input_event(dev, EV_MSC, MSC_RAW, code);
359 if (atkbd->translated) {
361 if (atkbd->emul || atkbd_need_xlate(atkbd->xl_bit, code)) {
362 atkbd->release = code >> 7;
367 atkbd_calculate_xl_bit(atkbd, data);
373 serio_reconnect(atkbd->ps2dev.serio);
375 case ATKBD_RET_EMUL0:
378 case ATKBD_RET_EMUL1:
381 case ATKBD_RET_RELEASE:
386 printk(KERN_WARNING "atkbd.c: Spurious %s on %s. "
387 "Some program might be trying access hardware directly.\n",
388 data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys);
390 case ATKBD_RET_HANGEUL:
391 case ATKBD_RET_HANJA:
393 * These keys do not report release and thus need to be
396 add_release_event = 1;
399 printk(KERN_DEBUG "atkbd.c: Keyboard on %s reports too many keys pressed.\n", serio->phys);
403 code = atkbd_compat_scancode(atkbd, code);
405 if (atkbd->emul && --atkbd->emul)
408 keycode = atkbd->keycode[code];
410 if (keycode != ATKBD_KEY_NULL)
411 input_event(dev, EV_MSC, MSC_SCAN, code);
416 case ATKBD_KEY_UNKNOWN:
418 "atkbd.c: Unknown key %s (%s set %d, code %#x on %s).\n",
419 atkbd->release ? "released" : "pressed",
420 atkbd->translated ? "translated" : "raw",
421 atkbd->set, code, serio->phys);
423 "atkbd.c: Use 'setkeycodes %s%02x <keycode>' to make it known.\n",
424 code & 0x80 ? "e0" : "", code & 0x7f);
428 scroll = 1 - atkbd->release * 2;
431 scroll = 2 - atkbd->release * 4;
434 scroll = 4 - atkbd->release * 8;
437 scroll = 8 - atkbd->release * 16;
439 case ATKBD_SCR_CLICK:
440 click = !atkbd->release;
445 case ATKBD_SCR_RIGHT:
449 if (atkbd->release) {
452 } else if (!atkbd->softrepeat && test_bit(keycode, dev->key)) {
453 /* Workaround Toshiba laptop multiple keypress */
454 value = time_before(jiffies, atkbd->time) && atkbd->last == code ? 1 : 2;
458 atkbd->time = jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]) / 2;
461 input_regs(dev, regs);
462 input_event(dev, EV_KEY, keycode, value);
465 if (value && add_release_event) {
466 input_report_key(dev, keycode, 0);
472 input_regs(dev, regs);
474 input_report_key(dev, BTN_MIDDLE, click);
475 input_report_rel(dev, REL_WHEEL, scroll);
476 input_report_rel(dev, REL_HWHEEL, hscroll);
485 static int atkbd_set_repeat_rate(struct atkbd *atkbd)
487 const short period[32] =
488 { 33, 37, 42, 46, 50, 54, 58, 63, 67, 75, 83, 92, 100, 109, 116, 125,
489 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 };
490 const short delay[4] =
491 { 250, 500, 750, 1000 };
493 struct input_dev *dev = atkbd->dev;
497 while (i < ARRAY_SIZE(period) - 1 && period[i] < dev->rep[REP_PERIOD])
499 dev->rep[REP_PERIOD] = period[i];
501 while (j < ARRAY_SIZE(delay) - 1 && delay[j] < dev->rep[REP_DELAY])
503 dev->rep[REP_DELAY] = delay[j];
505 param = i | (j << 5);
506 return ps2_command(&atkbd->ps2dev, ¶m, ATKBD_CMD_SETREP);
509 static int atkbd_set_leds(struct atkbd *atkbd)
511 struct input_dev *dev = atkbd->dev;
512 unsigned char param[2];
514 param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0)
515 | (test_bit(LED_NUML, dev->led) ? 2 : 0)
516 | (test_bit(LED_CAPSL, dev->led) ? 4 : 0);
517 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS))
522 param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0)
523 | (test_bit(LED_SLEEP, dev->led) ? 0x02 : 0)
524 | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0)
525 | (test_bit(LED_MISC, dev->led) ? 0x10 : 0)
526 | (test_bit(LED_MUTE, dev->led) ? 0x20 : 0);
527 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS))
535 * atkbd_event_work() is used to complete processing of events that
536 * can not be processed by input_event() which is often called from
540 static void atkbd_event_work(void *data)
542 struct atkbd *atkbd = data;
544 mutex_lock(&atkbd->event_mutex);
546 if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask))
547 atkbd_set_leds(atkbd);
549 if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask))
550 atkbd_set_repeat_rate(atkbd);
552 mutex_unlock(&atkbd->event_mutex);
556 * Event callback from the input module. Events that change the state of
557 * the hardware are processed here. If action can not be performed in
558 * interrupt context it is offloaded to atkbd_event_work.
561 static int atkbd_event(struct input_dev *dev, unsigned int type, unsigned int code, int value)
563 struct atkbd *atkbd = dev->private;
571 set_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask);
573 schedule_work(&atkbd->event_work);
578 if (!atkbd->softrepeat) {
579 set_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask);
581 schedule_work(&atkbd->event_work);
591 * atkbd_enable() signals that interrupt handler is allowed to
592 * generate input events.
595 static inline void atkbd_enable(struct atkbd *atkbd)
597 serio_pause_rx(atkbd->ps2dev.serio);
599 serio_continue_rx(atkbd->ps2dev.serio);
603 * atkbd_disable() tells input handler that all incoming data except
604 * for ACKs and command response should be dropped.
607 static inline void atkbd_disable(struct atkbd *atkbd)
609 serio_pause_rx(atkbd->ps2dev.serio);
611 serio_continue_rx(atkbd->ps2dev.serio);
615 * atkbd_probe() probes for an AT keyboard on a serio port.
618 static int atkbd_probe(struct atkbd *atkbd)
620 struct ps2dev *ps2dev = &atkbd->ps2dev;
621 unsigned char param[2];
624 * Some systems, where the bit-twiddling when testing the io-lines of the
625 * controller may confuse the keyboard need a full reset of the keyboard. On
626 * these systems the BIOS also usually doesn't do it for us.
630 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT))
631 printk(KERN_WARNING "atkbd.c: keyboard reset failed on %s\n", ps2dev->serio->phys);
634 * Then we check the keyboard ID. We should get 0xab83 under normal conditions.
635 * Some keyboards report different values, but the first byte is always 0xab or
636 * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this
637 * should make sure we don't try to set the LEDs on it.
640 param[0] = param[1] = 0xa5; /* initialize with invalid values */
641 if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) {
644 * If the get ID command failed, we check if we can at least set the LEDs on
645 * the keyboard. This should work on every keyboard out there. It also turns
646 * the LEDs off, which we want anyway.
649 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
655 if (param[0] != 0xab && param[0] != 0xac && /* Regular and NCD Sun keyboards */
656 param[0] != 0x2b && param[0] != 0x5d && /* Trust keyboard, raw and translated */
657 param[0] != 0x60 && param[0] != 0x47) /* NMB SGI keyboard, raw and translated */
660 atkbd->id = (param[0] << 8) | param[1];
662 if (atkbd->id == 0xaca1 && atkbd->translated) {
663 printk(KERN_ERR "atkbd.c: NCD terminal keyboards are only supported on non-translating\n");
664 printk(KERN_ERR "atkbd.c: controllers. Use i8042.direct=1 to disable translation.\n");
672 * atkbd_select_set checks if a keyboard has a working Set 3 support, and
673 * sets it into that. Unfortunately there are keyboards that can be switched
674 * to Set 3, but don't work well in that (BTC Multimedia ...)
677 static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra)
679 struct ps2dev *ps2dev = &atkbd->ps2dev;
680 unsigned char param[2];
684 * For known special keyboards we can go ahead and set the correct set.
685 * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and
686 * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards.
689 if (atkbd->translated)
692 if (atkbd->id == 0xaca1) {
694 ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET);
700 if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) {
709 if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) {
710 atkbd->id = param[0] << 8 | param[1];
715 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
719 if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET))
724 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
728 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR);
733 static int atkbd_activate(struct atkbd *atkbd)
735 struct ps2dev *ps2dev = &atkbd->ps2dev;
736 unsigned char param[1];
739 * Set the LEDs to a defined state.
743 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
747 * Set autorepeat to fastest possible.
751 if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP))
755 * Enable the keyboard to receive keystrokes.
758 if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) {
759 printk(KERN_ERR "atkbd.c: Failed to enable keyboard on %s\n",
760 ps2dev->serio->phys);
768 * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a
772 static void atkbd_cleanup(struct serio *serio)
774 struct atkbd *atkbd = serio_get_drvdata(serio);
775 ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_BAT);
780 * atkbd_disconnect() closes and frees.
783 static void atkbd_disconnect(struct serio *serio)
785 struct atkbd *atkbd = serio_get_drvdata(serio);
787 atkbd_disable(atkbd);
789 /* make sure we don't have a command in flight */
790 synchronize_sched(); /* Allow atkbd_interrupt()s to complete. */
791 flush_scheduled_work();
793 device_remove_file(&serio->dev, &atkbd_attr_extra);
794 device_remove_file(&serio->dev, &atkbd_attr_scroll);
795 device_remove_file(&serio->dev, &atkbd_attr_set);
796 device_remove_file(&serio->dev, &atkbd_attr_softrepeat);
797 device_remove_file(&serio->dev, &atkbd_attr_softraw);
799 input_unregister_device(atkbd->dev);
801 serio_set_drvdata(serio, NULL);
807 * atkbd_set_keycode_table() initializes keyboard's keycode table
808 * according to the selected scancode set
811 static void atkbd_set_keycode_table(struct atkbd *atkbd)
815 memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
817 if (atkbd->translated) {
818 for (i = 0; i < 128; i++) {
819 atkbd->keycode[i] = atkbd_set2_keycode[atkbd_unxlate_table[i]];
820 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[atkbd_unxlate_table[i] | 0x80];
822 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
823 if ((atkbd_unxlate_table[i] | 0x80) == atkbd_scroll_keys[j].set2)
824 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
826 } else if (atkbd->set == 3) {
827 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
829 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
832 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++)
833 atkbd->keycode[atkbd_scroll_keys[i].set2] = atkbd_scroll_keys[i].keycode;
836 atkbd->keycode[atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL)] = KEY_HANGUEL;
837 atkbd->keycode[atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA)] = KEY_HANJA;
841 * atkbd_set_device_attrs() sets up keyboard's input device structure
844 static void atkbd_set_device_attrs(struct atkbd *atkbd)
846 struct input_dev *input_dev = atkbd->dev;
850 snprintf(atkbd->name, sizeof(atkbd->name),
851 "AT Set 2 Extra keyboard");
853 snprintf(atkbd->name, sizeof(atkbd->name),
854 "AT %s Set %d keyboard",
855 atkbd->translated ? "Translated" : "Raw", atkbd->set);
857 snprintf(atkbd->phys, sizeof(atkbd->phys),
858 "%s/input0", atkbd->ps2dev.serio->phys);
860 input_dev->name = atkbd->name;
861 input_dev->phys = atkbd->phys;
862 input_dev->id.bustype = BUS_I8042;
863 input_dev->id.vendor = 0x0001;
864 input_dev->id.product = atkbd->translated ? 1 : atkbd->set;
865 input_dev->id.version = atkbd->id;
866 input_dev->event = atkbd_event;
867 input_dev->private = atkbd;
868 input_dev->cdev.dev = &atkbd->ps2dev.serio->dev;
870 input_dev->evbit[0] = BIT(EV_KEY) | BIT(EV_REP) | BIT(EV_MSC);
873 input_dev->evbit[0] |= BIT(EV_LED);
874 input_dev->ledbit[0] = BIT(LED_NUML) | BIT(LED_CAPSL) | BIT(LED_SCROLLL);
878 input_dev->ledbit[0] |= BIT(LED_COMPOSE) | BIT(LED_SUSPEND) |
879 BIT(LED_SLEEP) | BIT(LED_MUTE) | BIT(LED_MISC);
881 if (!atkbd->softrepeat) {
882 input_dev->rep[REP_DELAY] = 250;
883 input_dev->rep[REP_PERIOD] = 33;
886 input_dev->mscbit[0] = atkbd->softraw ? BIT(MSC_SCAN) : BIT(MSC_RAW) | BIT(MSC_SCAN);
889 input_dev->evbit[0] |= BIT(EV_REL);
890 input_dev->relbit[0] = BIT(REL_WHEEL) | BIT(REL_HWHEEL);
891 set_bit(BTN_MIDDLE, input_dev->keybit);
894 input_dev->keycode = atkbd->keycode;
895 input_dev->keycodesize = sizeof(unsigned char);
896 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
898 for (i = 0; i < 512; i++)
899 if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL)
900 set_bit(atkbd->keycode[i], input_dev->keybit);
904 * atkbd_connect() is called when the serio module finds an interface
905 * that isn't handled yet by an appropriate device driver. We check if
906 * there is an AT keyboard out there and if yes, we register ourselves
907 * to the input module.
910 static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
913 struct input_dev *dev;
916 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL);
917 dev = input_allocate_device();
922 ps2_init(&atkbd->ps2dev, serio);
923 INIT_WORK(&atkbd->event_work, atkbd_event_work, atkbd);
924 mutex_init(&atkbd->event_mutex);
926 switch (serio->id.type) {
929 atkbd->translated = 1;
936 atkbd->softraw = atkbd_softraw;
937 atkbd->softrepeat = atkbd_softrepeat;
938 atkbd->scroll = atkbd_scroll;
940 if (atkbd->softrepeat)
943 serio_set_drvdata(serio, atkbd);
945 err = serio_open(serio, drv);
951 if (atkbd_probe(atkbd)) {
957 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
958 atkbd_activate(atkbd);
965 atkbd_set_keycode_table(atkbd);
966 atkbd_set_device_attrs(atkbd);
968 device_create_file(&serio->dev, &atkbd_attr_extra);
969 device_create_file(&serio->dev, &atkbd_attr_scroll);
970 device_create_file(&serio->dev, &atkbd_attr_set);
971 device_create_file(&serio->dev, &atkbd_attr_softrepeat);
972 device_create_file(&serio->dev, &atkbd_attr_softraw);
976 input_register_device(atkbd->dev);
980 fail: serio_set_drvdata(serio, NULL);
981 input_free_device(dev);
987 * atkbd_reconnect() tries to restore keyboard into a sane state and is
988 * most likely called on resume.
991 static int atkbd_reconnect(struct serio *serio)
993 struct atkbd *atkbd = serio_get_drvdata(serio);
994 struct serio_driver *drv = serio->drv;
996 if (!atkbd || !drv) {
997 printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n");
1001 atkbd_disable(atkbd);
1004 if (atkbd_probe(atkbd))
1006 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
1009 atkbd_activate(atkbd);
1012 * Restore repeat rate and LEDs (that were reset by atkbd_activate)
1013 * to pre-resume state
1015 if (!atkbd->softrepeat)
1016 atkbd_set_repeat_rate(atkbd);
1017 atkbd_set_leds(atkbd);
1020 atkbd_enable(atkbd);
1025 static struct serio_device_id atkbd_serio_ids[] = {
1033 .type = SERIO_8042_XL,
1039 .type = SERIO_RS232,
1040 .proto = SERIO_PS2SER,
1047 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
1049 static struct serio_driver atkbd_drv = {
1053 .description = DRIVER_DESC,
1054 .id_table = atkbd_serio_ids,
1055 .interrupt = atkbd_interrupt,
1056 .connect = atkbd_connect,
1057 .reconnect = atkbd_reconnect,
1058 .disconnect = atkbd_disconnect,
1059 .cleanup = atkbd_cleanup,
1062 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
1063 ssize_t (*handler)(struct atkbd *, char *))
1065 struct serio *serio = to_serio_port(dev);
1068 retval = serio_pin_driver(serio);
1072 if (serio->drv != &atkbd_drv) {
1077 retval = handler((struct atkbd *)serio_get_drvdata(serio), buf);
1080 serio_unpin_driver(serio);
1084 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
1085 ssize_t (*handler)(struct atkbd *, const char *, size_t))
1087 struct serio *serio = to_serio_port(dev);
1088 struct atkbd *atkbd;
1091 retval = serio_pin_driver(serio);
1095 if (serio->drv != &atkbd_drv) {
1100 atkbd = serio_get_drvdata(serio);
1101 atkbd_disable(atkbd);
1102 retval = handler(atkbd, buf, count);
1103 atkbd_enable(atkbd);
1106 serio_unpin_driver(serio);
1110 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
1112 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
1115 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
1117 struct input_dev *new_dev;
1118 unsigned long value;
1124 value = simple_strtoul(buf, &rest, 10);
1125 if (*rest || value > 1)
1128 if (atkbd->extra != value) {
1130 * Since device's properties will change we need to
1131 * unregister old device. But allocate new one first
1132 * to make sure we have it.
1134 if (!(new_dev = input_allocate_device()))
1136 input_unregister_device(atkbd->dev);
1137 atkbd->dev = new_dev;
1138 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
1139 atkbd_activate(atkbd);
1140 atkbd_set_device_attrs(atkbd);
1141 input_register_device(atkbd->dev);
1146 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
1148 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
1151 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
1153 struct input_dev *new_dev;
1154 unsigned long value;
1157 value = simple_strtoul(buf, &rest, 10);
1158 if (*rest || value > 1)
1161 if (atkbd->scroll != value) {
1162 if (!(new_dev = input_allocate_device()))
1164 input_unregister_device(atkbd->dev);
1165 atkbd->dev = new_dev;
1166 atkbd->scroll = value;
1167 atkbd_set_keycode_table(atkbd);
1168 atkbd_set_device_attrs(atkbd);
1169 input_register_device(atkbd->dev);
1174 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
1176 return sprintf(buf, "%d\n", atkbd->set);
1179 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
1181 struct input_dev *new_dev;
1182 unsigned long value;
1188 value = simple_strtoul(buf, &rest, 10);
1189 if (*rest || (value != 2 && value != 3))
1192 if (atkbd->set != value) {
1193 if (!(new_dev = input_allocate_device()))
1195 input_unregister_device(atkbd->dev);
1196 atkbd->dev = new_dev;
1197 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra);
1198 atkbd_activate(atkbd);
1199 atkbd_set_keycode_table(atkbd);
1200 atkbd_set_device_attrs(atkbd);
1201 input_register_device(atkbd->dev);
1206 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
1208 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
1211 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
1213 struct input_dev *new_dev;
1214 unsigned long value;
1220 value = simple_strtoul(buf, &rest, 10);
1221 if (*rest || value > 1)
1224 if (atkbd->softrepeat != value) {
1225 if (!(new_dev = input_allocate_device()))
1227 input_unregister_device(atkbd->dev);
1228 atkbd->dev = new_dev;
1229 atkbd->softrepeat = value;
1230 if (atkbd->softrepeat)
1232 atkbd_set_device_attrs(atkbd);
1233 input_register_device(atkbd->dev);
1239 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
1241 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
1244 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
1246 struct input_dev *new_dev;
1247 unsigned long value;
1250 value = simple_strtoul(buf, &rest, 10);
1251 if (*rest || value > 1)
1254 if (atkbd->softraw != value) {
1255 if (!(new_dev = input_allocate_device()))
1257 input_unregister_device(atkbd->dev);
1258 atkbd->dev = new_dev;
1259 atkbd->softraw = value;
1260 atkbd_set_device_attrs(atkbd);
1261 input_register_device(atkbd->dev);
1267 static int __init atkbd_init(void)
1269 serio_register_driver(&atkbd_drv);
1273 static void __exit atkbd_exit(void)
1275 serio_unregister_driver(&atkbd_drv);
1278 module_init(atkbd_init);
1279 module_exit(atkbd_exit);