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/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>
29 #include <linux/mutex.h>
30 #include <linux/dmi.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 a userland utility.
71 static const unsigned short 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 const unsigned short 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 const unsigned short 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 ATKBD_SCR_RIGHT
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
176 static const struct {
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 short keycode[512];
204 DECLARE_BITMAP(force_release_mask, 512);
206 unsigned char translated;
209 unsigned char softrepeat;
210 unsigned char softraw;
211 unsigned char scroll;
212 unsigned char enabled;
214 /* Accessed only from interrupt */
216 unsigned char resend;
217 unsigned char release;
218 unsigned long xl_bit;
221 unsigned long err_count;
223 struct delayed_work event_work;
224 unsigned long event_jiffies;
225 struct mutex event_mutex;
226 unsigned long event_mask;
230 * System-specific ketymap fixup routine
232 static void (*atkbd_platform_fixup)(struct atkbd *, const void *data);
233 static void *atkbd_platform_fixup_data;
235 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
236 ssize_t (*handler)(struct atkbd *, char *));
237 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
238 ssize_t (*handler)(struct atkbd *, const char *, size_t));
239 #define ATKBD_DEFINE_ATTR(_name) \
240 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
241 static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \
242 static ssize_t atkbd_do_show_##_name(struct device *d, \
243 struct device_attribute *attr, char *b) \
245 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
247 static ssize_t atkbd_do_set_##_name(struct device *d, \
248 struct device_attribute *attr, const char *b, size_t s) \
250 return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name); \
252 static struct device_attribute atkbd_attr_##_name = \
253 __ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name);
255 ATKBD_DEFINE_ATTR(extra);
256 ATKBD_DEFINE_ATTR(scroll);
257 ATKBD_DEFINE_ATTR(set);
258 ATKBD_DEFINE_ATTR(softrepeat);
259 ATKBD_DEFINE_ATTR(softraw);
261 #define ATKBD_DEFINE_RO_ATTR(_name) \
262 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
263 static ssize_t atkbd_do_show_##_name(struct device *d, \
264 struct device_attribute *attr, char *b) \
266 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
268 static struct device_attribute atkbd_attr_##_name = \
269 __ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL);
271 ATKBD_DEFINE_RO_ATTR(err_count);
273 static struct attribute *atkbd_attributes[] = {
274 &atkbd_attr_extra.attr,
275 &atkbd_attr_scroll.attr,
276 &atkbd_attr_set.attr,
277 &atkbd_attr_softrepeat.attr,
278 &atkbd_attr_softraw.attr,
279 &atkbd_attr_err_count.attr,
283 static struct attribute_group atkbd_attribute_group = {
284 .attrs = atkbd_attributes,
287 static const unsigned int xl_table[] = {
288 ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK,
289 ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL,
293 * Checks if we should mangle the scancode to extract 'release' bit
294 * in translated mode.
296 static int atkbd_need_xlate(unsigned long xl_bit, unsigned char code)
300 if (code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1)
303 for (i = 0; i < ARRAY_SIZE(xl_table); i++)
304 if (code == xl_table[i])
305 return test_bit(i, &xl_bit);
311 * Calculates new value of xl_bit so the driver can distinguish
312 * between make/break pair of scancodes for select keys and PS/2
313 * protocol responses.
315 static void atkbd_calculate_xl_bit(struct atkbd *atkbd, unsigned char code)
319 for (i = 0; i < ARRAY_SIZE(xl_table); i++) {
320 if (!((code ^ xl_table[i]) & 0x7f)) {
322 __clear_bit(i, &atkbd->xl_bit);
324 __set_bit(i, &atkbd->xl_bit);
331 * Encode the scancode, 0xe0 prefix, and high bit into a single integer,
332 * keeping kernel 2.4 compatibility for set 2
334 static unsigned int atkbd_compat_scancode(struct atkbd *atkbd, unsigned int code)
336 if (atkbd->set == 3) {
337 if (atkbd->emul == 1)
340 code = (code & 0x7f) | ((code & 0x80) << 1);
341 if (atkbd->emul == 1)
349 * atkbd_interrupt(). Here takes place processing of data received from
350 * the keyboard into events.
353 static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data,
356 struct atkbd *atkbd = serio_get_drvdata(serio);
357 struct input_dev *dev = atkbd->dev;
358 unsigned int code = data;
359 int scroll = 0, hscroll = 0, click = -1;
361 unsigned short keycode;
364 printk(KERN_DEBUG "atkbd.c: Received %02x flags %02x\n", data, flags);
367 #if !defined(__i386__) && !defined (__x86_64__)
368 if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) {
369 printk(KERN_WARNING "atkbd.c: frame/parity error: %02x\n", flags);
370 serio_write(serio, ATKBD_CMD_RESEND);
375 if (!flags && data == ATKBD_RET_ACK)
379 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_ACK))
380 if (ps2_handle_ack(&atkbd->ps2dev, data))
383 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_CMD))
384 if (ps2_handle_response(&atkbd->ps2dev, data))
390 input_event(dev, EV_MSC, MSC_RAW, code);
392 if (atkbd->translated) {
394 if (atkbd->emul || atkbd_need_xlate(atkbd->xl_bit, code)) {
395 atkbd->release = code >> 7;
400 atkbd_calculate_xl_bit(atkbd, data);
406 serio_reconnect(atkbd->ps2dev.serio);
408 case ATKBD_RET_EMUL0:
411 case ATKBD_RET_EMUL1:
414 case ATKBD_RET_RELEASE:
419 if (printk_ratelimit())
420 printk(KERN_WARNING "atkbd.c: Spurious %s on %s. "
421 "Some program might be trying access hardware directly.\n",
422 data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys);
427 printk(KERN_DEBUG "atkbd.c: Keyboard on %s reports too many keys pressed.\n", serio->phys);
432 code = atkbd_compat_scancode(atkbd, code);
434 if (atkbd->emul && --atkbd->emul)
437 keycode = atkbd->keycode[code];
439 if (keycode != ATKBD_KEY_NULL)
440 input_event(dev, EV_MSC, MSC_SCAN, code);
445 case ATKBD_KEY_UNKNOWN:
447 "atkbd.c: Unknown key %s (%s set %d, code %#x on %s).\n",
448 atkbd->release ? "released" : "pressed",
449 atkbd->translated ? "translated" : "raw",
450 atkbd->set, code, serio->phys);
452 "atkbd.c: Use 'setkeycodes %s%02x <keycode>' to make it known.\n",
453 code & 0x80 ? "e0" : "", code & 0x7f);
457 scroll = 1 - atkbd->release * 2;
460 scroll = 2 - atkbd->release * 4;
463 scroll = 4 - atkbd->release * 8;
466 scroll = 8 - atkbd->release * 16;
468 case ATKBD_SCR_CLICK:
469 click = !atkbd->release;
474 case ATKBD_SCR_RIGHT:
478 if (atkbd->release) {
481 } else if (!atkbd->softrepeat && test_bit(keycode, dev->key)) {
482 /* Workaround Toshiba laptop multiple keypress */
483 value = time_before(jiffies, atkbd->time) && atkbd->last == code ? 1 : 2;
487 atkbd->time = jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]) / 2;
490 input_event(dev, EV_KEY, keycode, value);
493 if (value && test_bit(code, atkbd->force_release_mask)) {
494 input_report_key(dev, keycode, 0);
501 input_report_key(dev, BTN_MIDDLE, click);
502 input_report_rel(dev, REL_WHEEL, scroll);
503 input_report_rel(dev, REL_HWHEEL, hscroll);
512 static int atkbd_set_repeat_rate(struct atkbd *atkbd)
514 const short period[32] =
515 { 33, 37, 42, 46, 50, 54, 58, 63, 67, 75, 83, 92, 100, 109, 116, 125,
516 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 };
517 const short delay[4] =
518 { 250, 500, 750, 1000 };
520 struct input_dev *dev = atkbd->dev;
524 while (i < ARRAY_SIZE(period) - 1 && period[i] < dev->rep[REP_PERIOD])
526 dev->rep[REP_PERIOD] = period[i];
528 while (j < ARRAY_SIZE(delay) - 1 && delay[j] < dev->rep[REP_DELAY])
530 dev->rep[REP_DELAY] = delay[j];
532 param = i | (j << 5);
533 return ps2_command(&atkbd->ps2dev, ¶m, ATKBD_CMD_SETREP);
536 static int atkbd_set_leds(struct atkbd *atkbd)
538 struct input_dev *dev = atkbd->dev;
539 unsigned char param[2];
541 param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0)
542 | (test_bit(LED_NUML, dev->led) ? 2 : 0)
543 | (test_bit(LED_CAPSL, dev->led) ? 4 : 0);
544 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS))
549 param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0)
550 | (test_bit(LED_SLEEP, dev->led) ? 0x02 : 0)
551 | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0)
552 | (test_bit(LED_MISC, dev->led) ? 0x10 : 0)
553 | (test_bit(LED_MUTE, dev->led) ? 0x20 : 0);
554 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS))
562 * atkbd_event_work() is used to complete processing of events that
563 * can not be processed by input_event() which is often called from
567 static void atkbd_event_work(struct work_struct *work)
569 struct atkbd *atkbd = container_of(work, struct atkbd, event_work.work);
571 mutex_lock(&atkbd->event_mutex);
573 if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask))
574 atkbd_set_leds(atkbd);
576 if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask))
577 atkbd_set_repeat_rate(atkbd);
579 mutex_unlock(&atkbd->event_mutex);
583 * Schedule switch for execution. We need to throttle requests,
584 * otherwise keyboard may become unresponsive.
586 static void atkbd_schedule_event_work(struct atkbd *atkbd, int event_bit)
588 unsigned long delay = msecs_to_jiffies(50);
590 if (time_after(jiffies, atkbd->event_jiffies + delay))
593 atkbd->event_jiffies = jiffies;
594 set_bit(event_bit, &atkbd->event_mask);
596 schedule_delayed_work(&atkbd->event_work, delay);
600 * Event callback from the input module. Events that change the state of
601 * the hardware are processed here. If action can not be performed in
602 * interrupt context it is offloaded to atkbd_event_work.
605 static int atkbd_event(struct input_dev *dev,
606 unsigned int type, unsigned int code, int value)
608 struct atkbd *atkbd = input_get_drvdata(dev);
616 atkbd_schedule_event_work(atkbd, ATKBD_LED_EVENT_BIT);
620 if (!atkbd->softrepeat)
621 atkbd_schedule_event_work(atkbd, ATKBD_REP_EVENT_BIT);
629 * atkbd_enable() signals that interrupt handler is allowed to
630 * generate input events.
633 static inline void atkbd_enable(struct atkbd *atkbd)
635 serio_pause_rx(atkbd->ps2dev.serio);
637 serio_continue_rx(atkbd->ps2dev.serio);
641 * atkbd_disable() tells input handler that all incoming data except
642 * for ACKs and command response should be dropped.
645 static inline void atkbd_disable(struct atkbd *atkbd)
647 serio_pause_rx(atkbd->ps2dev.serio);
649 serio_continue_rx(atkbd->ps2dev.serio);
653 * atkbd_probe() probes for an AT keyboard on a serio port.
656 static int atkbd_probe(struct atkbd *atkbd)
658 struct ps2dev *ps2dev = &atkbd->ps2dev;
659 unsigned char param[2];
662 * Some systems, where the bit-twiddling when testing the io-lines of the
663 * controller may confuse the keyboard need a full reset of the keyboard. On
664 * these systems the BIOS also usually doesn't do it for us.
668 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT))
669 printk(KERN_WARNING "atkbd.c: keyboard reset failed on %s\n", ps2dev->serio->phys);
672 * Then we check the keyboard ID. We should get 0xab83 under normal conditions.
673 * Some keyboards report different values, but the first byte is always 0xab or
674 * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this
675 * should make sure we don't try to set the LEDs on it.
678 param[0] = param[1] = 0xa5; /* initialize with invalid values */
679 if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) {
682 * If the get ID command failed, we check if we can at least set the LEDs on
683 * the keyboard. This should work on every keyboard out there. It also turns
684 * the LEDs off, which we want anyway.
687 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
693 if (!ps2_is_keyboard_id(param[0]))
696 atkbd->id = (param[0] << 8) | param[1];
698 if (atkbd->id == 0xaca1 && atkbd->translated) {
699 printk(KERN_ERR "atkbd.c: NCD terminal keyboards are only supported on non-translating\n");
700 printk(KERN_ERR "atkbd.c: controllers. Use i8042.direct=1 to disable translation.\n");
708 * atkbd_select_set checks if a keyboard has a working Set 3 support, and
709 * sets it into that. Unfortunately there are keyboards that can be switched
710 * to Set 3, but don't work well in that (BTC Multimedia ...)
713 static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra)
715 struct ps2dev *ps2dev = &atkbd->ps2dev;
716 unsigned char param[2];
720 * For known special keyboards we can go ahead and set the correct set.
721 * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and
722 * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards.
725 if (atkbd->translated)
728 if (atkbd->id == 0xaca1) {
730 ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET);
736 if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) {
745 if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) {
746 atkbd->id = param[0] << 8 | param[1];
751 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
755 if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET))
760 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
764 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR);
769 static int atkbd_activate(struct atkbd *atkbd)
771 struct ps2dev *ps2dev = &atkbd->ps2dev;
772 unsigned char param[1];
775 * Set the LEDs to a defined state.
779 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
783 * Set autorepeat to fastest possible.
787 if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP))
791 * Enable the keyboard to receive keystrokes.
794 if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) {
795 printk(KERN_ERR "atkbd.c: Failed to enable keyboard on %s\n",
796 ps2dev->serio->phys);
804 * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a
808 static void atkbd_cleanup(struct serio *serio)
810 struct atkbd *atkbd = serio_get_drvdata(serio);
812 atkbd_disable(atkbd);
813 ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_BAT);
818 * atkbd_disconnect() closes and frees.
821 static void atkbd_disconnect(struct serio *serio)
823 struct atkbd *atkbd = serio_get_drvdata(serio);
825 atkbd_disable(atkbd);
827 /* make sure we don't have a command in flight */
828 cancel_delayed_work_sync(&atkbd->event_work);
830 sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
831 input_unregister_device(atkbd->dev);
833 serio_set_drvdata(serio, NULL);
838 * generate release events for the keycodes given in data
840 static void atkbd_apply_forced_release_keylist(struct atkbd* atkbd,
843 const unsigned int *keys = data;
847 for (i = 0; keys[i] != -1U; i++)
848 __set_bit(keys[i], atkbd->force_release_mask);
852 * Most special keys (Fn+F?) on Dell laptops do not generate release
853 * events so we have to do it ourselves.
855 static unsigned int atkbd_dell_laptop_forced_release_keys[] = {
856 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8f, 0x93, -1U
860 * Perform fixup for HP system that doesn't generate release
861 * for its video switch
863 static unsigned int atkbd_hp_forced_release_keys[] = {
868 * Inventec system with broken key release on volume keys
870 static unsigned int atkbd_inventec_forced_release_keys[] = {
875 * Perform fixup for HP Pavilion ZV6100 laptop that doesn't generate release
876 * for its volume buttons
878 static unsigned int atkbd_hp_zv6100_forced_release_keys[] = {
883 * Samsung NC10,NC20 with Fn+F? key release not working
885 static unsigned int atkbd_samsung_forced_release_keys[] = {
886 0x82, 0x83, 0x84, 0x86, 0x88, 0x89, 0xb3, 0xf7, 0xf9, -1U
890 * The volume up and volume down special keys on a Fujitsu Amilo PA 1510 laptop
891 * do not generate release events so we have to do it ourselves.
893 static unsigned int atkbd_amilo_pa1510_forced_release_keys[] = {
898 * atkbd_set_keycode_table() initializes keyboard's keycode table
899 * according to the selected scancode set
902 static void atkbd_set_keycode_table(struct atkbd *atkbd)
904 unsigned int scancode;
907 memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
908 bitmap_zero(atkbd->force_release_mask, 512);
910 if (atkbd->translated) {
911 for (i = 0; i < 128; i++) {
912 scancode = atkbd_unxlate_table[i];
913 atkbd->keycode[i] = atkbd_set2_keycode[scancode];
914 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80];
916 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
917 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2)
918 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
920 } else if (atkbd->set == 3) {
921 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
923 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
926 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) {
927 scancode = atkbd_scroll_keys[i].set2;
928 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode;
933 * HANGEUL and HANJA keys do not send release events so we need to
934 * generate such events ourselves
936 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL);
937 atkbd->keycode[scancode] = KEY_HANGEUL;
938 __set_bit(scancode, atkbd->force_release_mask);
940 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA);
941 atkbd->keycode[scancode] = KEY_HANJA;
942 __set_bit(scancode, atkbd->force_release_mask);
945 * Perform additional fixups
947 if (atkbd_platform_fixup)
948 atkbd_platform_fixup(atkbd, atkbd_platform_fixup_data);
952 * atkbd_set_device_attrs() sets up keyboard's input device structure
955 static void atkbd_set_device_attrs(struct atkbd *atkbd)
957 struct input_dev *input_dev = atkbd->dev;
961 snprintf(atkbd->name, sizeof(atkbd->name),
962 "AT Set 2 Extra keyboard");
964 snprintf(atkbd->name, sizeof(atkbd->name),
965 "AT %s Set %d keyboard",
966 atkbd->translated ? "Translated" : "Raw", atkbd->set);
968 snprintf(atkbd->phys, sizeof(atkbd->phys),
969 "%s/input0", atkbd->ps2dev.serio->phys);
971 input_dev->name = atkbd->name;
972 input_dev->phys = atkbd->phys;
973 input_dev->id.bustype = BUS_I8042;
974 input_dev->id.vendor = 0x0001;
975 input_dev->id.product = atkbd->translated ? 1 : atkbd->set;
976 input_dev->id.version = atkbd->id;
977 input_dev->event = atkbd_event;
978 input_dev->dev.parent = &atkbd->ps2dev.serio->dev;
980 input_set_drvdata(input_dev, atkbd);
982 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
986 input_dev->evbit[0] |= BIT_MASK(EV_LED);
987 input_dev->ledbit[0] = BIT_MASK(LED_NUML) |
988 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL);
992 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) |
993 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) |
994 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC);
996 if (!atkbd->softrepeat) {
997 input_dev->rep[REP_DELAY] = 250;
998 input_dev->rep[REP_PERIOD] = 33;
1001 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) :
1002 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN);
1004 if (atkbd->scroll) {
1005 input_dev->evbit[0] |= BIT_MASK(EV_REL);
1006 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) |
1007 BIT_MASK(REL_HWHEEL);
1008 __set_bit(BTN_MIDDLE, input_dev->keybit);
1011 input_dev->keycode = atkbd->keycode;
1012 input_dev->keycodesize = sizeof(unsigned short);
1013 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
1015 for (i = 0; i < 512; i++)
1016 if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL)
1017 __set_bit(atkbd->keycode[i], input_dev->keybit);
1021 * atkbd_connect() is called when the serio module finds an interface
1022 * that isn't handled yet by an appropriate device driver. We check if
1023 * there is an AT keyboard out there and if yes, we register ourselves
1024 * to the input module.
1027 static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
1029 struct atkbd *atkbd;
1030 struct input_dev *dev;
1033 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL);
1034 dev = input_allocate_device();
1039 ps2_init(&atkbd->ps2dev, serio);
1040 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work);
1041 mutex_init(&atkbd->event_mutex);
1043 switch (serio->id.type) {
1046 atkbd->translated = 1;
1053 atkbd->softraw = atkbd_softraw;
1054 atkbd->softrepeat = atkbd_softrepeat;
1055 atkbd->scroll = atkbd_scroll;
1057 if (atkbd->softrepeat)
1060 serio_set_drvdata(serio, atkbd);
1062 err = serio_open(serio, drv);
1068 if (atkbd_probe(atkbd)) {
1073 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
1074 atkbd_activate(atkbd);
1081 atkbd_set_keycode_table(atkbd);
1082 atkbd_set_device_attrs(atkbd);
1084 err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group);
1088 atkbd_enable(atkbd);
1090 err = input_register_device(atkbd->dev);
1096 fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
1097 fail3: serio_close(serio);
1098 fail2: serio_set_drvdata(serio, NULL);
1099 fail1: input_free_device(dev);
1105 * atkbd_reconnect() tries to restore keyboard into a sane state and is
1106 * most likely called on resume.
1109 static int atkbd_reconnect(struct serio *serio)
1111 struct atkbd *atkbd = serio_get_drvdata(serio);
1112 struct serio_driver *drv = serio->drv;
1114 if (!atkbd || !drv) {
1115 printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n");
1119 atkbd_disable(atkbd);
1122 if (atkbd_probe(atkbd))
1124 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
1127 atkbd_activate(atkbd);
1130 * Restore repeat rate and LEDs (that were reset by atkbd_activate)
1131 * to pre-resume state
1133 if (!atkbd->softrepeat)
1134 atkbd_set_repeat_rate(atkbd);
1135 atkbd_set_leds(atkbd);
1138 atkbd_enable(atkbd);
1143 static struct serio_device_id atkbd_serio_ids[] = {
1151 .type = SERIO_8042_XL,
1157 .type = SERIO_RS232,
1158 .proto = SERIO_PS2SER,
1165 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
1167 static struct serio_driver atkbd_drv = {
1171 .description = DRIVER_DESC,
1172 .id_table = atkbd_serio_ids,
1173 .interrupt = atkbd_interrupt,
1174 .connect = atkbd_connect,
1175 .reconnect = atkbd_reconnect,
1176 .disconnect = atkbd_disconnect,
1177 .cleanup = atkbd_cleanup,
1180 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
1181 ssize_t (*handler)(struct atkbd *, char *))
1183 struct serio *serio = to_serio_port(dev);
1186 retval = serio_pin_driver(serio);
1190 if (serio->drv != &atkbd_drv) {
1195 retval = handler((struct atkbd *)serio_get_drvdata(serio), buf);
1198 serio_unpin_driver(serio);
1202 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
1203 ssize_t (*handler)(struct atkbd *, const char *, size_t))
1205 struct serio *serio = to_serio_port(dev);
1206 struct atkbd *atkbd;
1209 retval = serio_pin_driver(serio);
1213 if (serio->drv != &atkbd_drv) {
1218 atkbd = serio_get_drvdata(serio);
1219 atkbd_disable(atkbd);
1220 retval = handler(atkbd, buf, count);
1221 atkbd_enable(atkbd);
1224 serio_unpin_driver(serio);
1228 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
1230 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
1233 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
1235 struct input_dev *old_dev, *new_dev;
1236 unsigned long value;
1238 unsigned char old_extra, old_set;
1243 if (strict_strtoul(buf, 10, &value) || value > 1)
1246 if (atkbd->extra != value) {
1248 * Since device's properties will change we need to
1249 * unregister old device. But allocate and register
1250 * new one first to make sure we have it.
1252 old_dev = atkbd->dev;
1253 old_extra = atkbd->extra;
1254 old_set = atkbd->set;
1256 new_dev = input_allocate_device();
1260 atkbd->dev = new_dev;
1261 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
1262 atkbd_activate(atkbd);
1263 atkbd_set_keycode_table(atkbd);
1264 atkbd_set_device_attrs(atkbd);
1266 err = input_register_device(atkbd->dev);
1268 input_free_device(new_dev);
1270 atkbd->dev = old_dev;
1271 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1272 atkbd_set_keycode_table(atkbd);
1273 atkbd_set_device_attrs(atkbd);
1277 input_unregister_device(old_dev);
1283 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
1285 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
1288 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
1290 struct input_dev *old_dev, *new_dev;
1291 unsigned long value;
1293 unsigned char old_scroll;
1295 if (strict_strtoul(buf, 10, &value) || value > 1)
1298 if (atkbd->scroll != value) {
1299 old_dev = atkbd->dev;
1300 old_scroll = atkbd->scroll;
1302 new_dev = input_allocate_device();
1306 atkbd->dev = new_dev;
1307 atkbd->scroll = value;
1308 atkbd_set_keycode_table(atkbd);
1309 atkbd_set_device_attrs(atkbd);
1311 err = input_register_device(atkbd->dev);
1313 input_free_device(new_dev);
1315 atkbd->scroll = old_scroll;
1316 atkbd->dev = old_dev;
1317 atkbd_set_keycode_table(atkbd);
1318 atkbd_set_device_attrs(atkbd);
1322 input_unregister_device(old_dev);
1327 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
1329 return sprintf(buf, "%d\n", atkbd->set);
1332 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
1334 struct input_dev *old_dev, *new_dev;
1335 unsigned long value;
1337 unsigned char old_set, old_extra;
1342 if (strict_strtoul(buf, 10, &value) || (value != 2 && value != 3))
1345 if (atkbd->set != value) {
1346 old_dev = atkbd->dev;
1347 old_extra = atkbd->extra;
1348 old_set = atkbd->set;
1350 new_dev = input_allocate_device();
1354 atkbd->dev = new_dev;
1355 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra);
1356 atkbd_activate(atkbd);
1357 atkbd_set_keycode_table(atkbd);
1358 atkbd_set_device_attrs(atkbd);
1360 err = input_register_device(atkbd->dev);
1362 input_free_device(new_dev);
1364 atkbd->dev = old_dev;
1365 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1366 atkbd_set_keycode_table(atkbd);
1367 atkbd_set_device_attrs(atkbd);
1371 input_unregister_device(old_dev);
1376 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
1378 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
1381 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
1383 struct input_dev *old_dev, *new_dev;
1384 unsigned long value;
1386 unsigned char old_softrepeat, old_softraw;
1391 if (strict_strtoul(buf, 10, &value) || value > 1)
1394 if (atkbd->softrepeat != value) {
1395 old_dev = atkbd->dev;
1396 old_softrepeat = atkbd->softrepeat;
1397 old_softraw = atkbd->softraw;
1399 new_dev = input_allocate_device();
1403 atkbd->dev = new_dev;
1404 atkbd->softrepeat = value;
1405 if (atkbd->softrepeat)
1407 atkbd_set_device_attrs(atkbd);
1409 err = input_register_device(atkbd->dev);
1411 input_free_device(new_dev);
1413 atkbd->dev = old_dev;
1414 atkbd->softrepeat = old_softrepeat;
1415 atkbd->softraw = old_softraw;
1416 atkbd_set_device_attrs(atkbd);
1420 input_unregister_device(old_dev);
1426 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
1428 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
1431 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
1433 struct input_dev *old_dev, *new_dev;
1434 unsigned long value;
1436 unsigned char old_softraw;
1438 if (strict_strtoul(buf, 10, &value) || value > 1)
1441 if (atkbd->softraw != value) {
1442 old_dev = atkbd->dev;
1443 old_softraw = atkbd->softraw;
1445 new_dev = input_allocate_device();
1449 atkbd->dev = new_dev;
1450 atkbd->softraw = value;
1451 atkbd_set_device_attrs(atkbd);
1453 err = input_register_device(atkbd->dev);
1455 input_free_device(new_dev);
1457 atkbd->dev = old_dev;
1458 atkbd->softraw = old_softraw;
1459 atkbd_set_device_attrs(atkbd);
1463 input_unregister_device(old_dev);
1468 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
1470 return sprintf(buf, "%lu\n", atkbd->err_count);
1473 static int __init atkbd_setup_forced_release(const struct dmi_system_id *id)
1475 atkbd_platform_fixup = atkbd_apply_forced_release_keylist;
1476 atkbd_platform_fixup_data = id->driver_data;
1481 static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = {
1483 .ident = "Dell Laptop",
1485 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
1486 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1488 .callback = atkbd_setup_forced_release,
1489 .driver_data = atkbd_dell_laptop_forced_release_keys,
1492 .ident = "Dell Laptop",
1494 DMI_MATCH(DMI_SYS_VENDOR, "Dell Computer Corporation"),
1495 DMI_MATCH(DMI_CHASSIS_TYPE, "8"), /* Portable */
1497 .callback = atkbd_setup_forced_release,
1498 .driver_data = atkbd_dell_laptop_forced_release_keys,
1503 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1504 DMI_MATCH(DMI_PRODUCT_NAME, "HP 2133"),
1506 .callback = atkbd_setup_forced_release,
1507 .driver_data = atkbd_hp_forced_release_keys,
1510 .ident = "HP Pavilion ZV6100",
1512 DMI_MATCH(DMI_SYS_VENDOR, "Hewlett-Packard"),
1513 DMI_MATCH(DMI_PRODUCT_NAME, "Pavilion ZV6100"),
1515 .callback = atkbd_setup_forced_release,
1516 .driver_data = atkbd_hp_zv6100_forced_release_keys,
1519 .ident = "Inventec Symphony",
1521 DMI_MATCH(DMI_SYS_VENDOR, "INVENTEC"),
1522 DMI_MATCH(DMI_PRODUCT_NAME, "SYMPHONY 6.0/7.0"),
1524 .callback = atkbd_setup_forced_release,
1525 .driver_data = atkbd_inventec_forced_release_keys,
1528 .ident = "Samsung NC10",
1530 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1531 DMI_MATCH(DMI_PRODUCT_NAME, "NC10"),
1533 .callback = atkbd_setup_forced_release,
1534 .driver_data = atkbd_samsung_forced_release_keys,
1537 .ident = "Samsung NC20",
1539 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1540 DMI_MATCH(DMI_PRODUCT_NAME, "NC20"),
1542 .callback = atkbd_setup_forced_release,
1543 .driver_data = atkbd_samsung_forced_release_keys,
1546 .ident = "Samsung SQ45S70S",
1548 DMI_MATCH(DMI_SYS_VENDOR, "SAMSUNG ELECTRONICS CO., LTD."),
1549 DMI_MATCH(DMI_PRODUCT_NAME, "SQ45S70S"),
1551 .callback = atkbd_setup_forced_release,
1552 .driver_data = atkbd_samsung_forced_release_keys,
1555 .ident = "Fujitsu Amilo PA 1510",
1557 DMI_MATCH(DMI_SYS_VENDOR, "FUJITSU SIEMENS"),
1558 DMI_MATCH(DMI_PRODUCT_NAME, "AMILO Pa 1510"),
1560 .callback = atkbd_setup_forced_release,
1561 .driver_data = atkbd_amilo_pa1510_forced_release_keys,
1566 static int __init atkbd_init(void)
1568 dmi_check_system(atkbd_dmi_quirk_table);
1570 return serio_register_driver(&atkbd_drv);
1573 static void __exit atkbd_exit(void)
1575 serio_unregister_driver(&atkbd_drv);
1578 module_init(atkbd_init);
1579 module_exit(atkbd_exit);