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 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];
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 *);
234 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
235 ssize_t (*handler)(struct atkbd *, char *));
236 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
237 ssize_t (*handler)(struct atkbd *, const char *, size_t));
238 #define ATKBD_DEFINE_ATTR(_name) \
239 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
240 static ssize_t atkbd_set_##_name(struct atkbd *, const char *, size_t); \
241 static ssize_t atkbd_do_show_##_name(struct device *d, \
242 struct device_attribute *attr, char *b) \
244 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
246 static ssize_t atkbd_do_set_##_name(struct device *d, \
247 struct device_attribute *attr, const char *b, size_t s) \
249 return atkbd_attr_set_helper(d, b, s, atkbd_set_##_name); \
251 static struct device_attribute atkbd_attr_##_name = \
252 __ATTR(_name, S_IWUSR | S_IRUGO, atkbd_do_show_##_name, atkbd_do_set_##_name);
254 ATKBD_DEFINE_ATTR(extra);
255 ATKBD_DEFINE_ATTR(scroll);
256 ATKBD_DEFINE_ATTR(set);
257 ATKBD_DEFINE_ATTR(softrepeat);
258 ATKBD_DEFINE_ATTR(softraw);
260 #define ATKBD_DEFINE_RO_ATTR(_name) \
261 static ssize_t atkbd_show_##_name(struct atkbd *, char *); \
262 static ssize_t atkbd_do_show_##_name(struct device *d, \
263 struct device_attribute *attr, char *b) \
265 return atkbd_attr_show_helper(d, b, atkbd_show_##_name); \
267 static struct device_attribute atkbd_attr_##_name = \
268 __ATTR(_name, S_IRUGO, atkbd_do_show_##_name, NULL);
270 ATKBD_DEFINE_RO_ATTR(err_count);
272 static struct attribute *atkbd_attributes[] = {
273 &atkbd_attr_extra.attr,
274 &atkbd_attr_scroll.attr,
275 &atkbd_attr_set.attr,
276 &atkbd_attr_softrepeat.attr,
277 &atkbd_attr_softraw.attr,
278 &atkbd_attr_err_count.attr,
282 static struct attribute_group atkbd_attribute_group = {
283 .attrs = atkbd_attributes,
286 static const unsigned int xl_table[] = {
287 ATKBD_RET_BAT, ATKBD_RET_ERR, ATKBD_RET_ACK,
288 ATKBD_RET_NAK, ATKBD_RET_HANJA, ATKBD_RET_HANGEUL,
292 * Checks if we should mangle the scancode to extract 'release' bit
293 * in translated mode.
295 static int atkbd_need_xlate(unsigned long xl_bit, unsigned char code)
299 if (code == ATKBD_RET_EMUL0 || code == ATKBD_RET_EMUL1)
302 for (i = 0; i < ARRAY_SIZE(xl_table); i++)
303 if (code == xl_table[i])
304 return test_bit(i, &xl_bit);
310 * Calculates new value of xl_bit so the driver can distinguish
311 * between make/break pair of scancodes for select keys and PS/2
312 * protocol responses.
314 static void atkbd_calculate_xl_bit(struct atkbd *atkbd, unsigned char code)
318 for (i = 0; i < ARRAY_SIZE(xl_table); i++) {
319 if (!((code ^ xl_table[i]) & 0x7f)) {
321 __clear_bit(i, &atkbd->xl_bit);
323 __set_bit(i, &atkbd->xl_bit);
330 * Encode the scancode, 0xe0 prefix, and high bit into a single integer,
331 * keeping kernel 2.4 compatibility for set 2
333 static unsigned int atkbd_compat_scancode(struct atkbd *atkbd, unsigned int code)
335 if (atkbd->set == 3) {
336 if (atkbd->emul == 1)
339 code = (code & 0x7f) | ((code & 0x80) << 1);
340 if (atkbd->emul == 1)
348 * atkbd_interrupt(). Here takes place processing of data received from
349 * the keyboard into events.
352 static irqreturn_t atkbd_interrupt(struct serio *serio, unsigned char data,
355 struct atkbd *atkbd = serio_get_drvdata(serio);
356 struct input_dev *dev = atkbd->dev;
357 unsigned int code = data;
358 int scroll = 0, hscroll = 0, click = -1;
360 unsigned char keycode;
363 printk(KERN_DEBUG "atkbd.c: Received %02x flags %02x\n", data, flags);
366 #if !defined(__i386__) && !defined (__x86_64__)
367 if ((flags & (SERIO_FRAME | SERIO_PARITY)) && (~flags & SERIO_TIMEOUT) && !atkbd->resend && atkbd->write) {
368 printk(KERN_WARNING "atkbd.c: frame/parity error: %02x\n", flags);
369 serio_write(serio, ATKBD_CMD_RESEND);
374 if (!flags && data == ATKBD_RET_ACK)
378 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_ACK))
379 if (ps2_handle_ack(&atkbd->ps2dev, data))
382 if (unlikely(atkbd->ps2dev.flags & PS2_FLAG_CMD))
383 if (ps2_handle_response(&atkbd->ps2dev, data))
389 input_event(dev, EV_MSC, MSC_RAW, code);
391 if (atkbd->translated) {
393 if (atkbd->emul || atkbd_need_xlate(atkbd->xl_bit, code)) {
394 atkbd->release = code >> 7;
399 atkbd_calculate_xl_bit(atkbd, data);
405 serio_reconnect(atkbd->ps2dev.serio);
407 case ATKBD_RET_EMUL0:
410 case ATKBD_RET_EMUL1:
413 case ATKBD_RET_RELEASE:
418 if (printk_ratelimit())
419 printk(KERN_WARNING "atkbd.c: Spurious %s on %s. "
420 "Some program might be trying access hardware directly.\n",
421 data == ATKBD_RET_ACK ? "ACK" : "NAK", serio->phys);
426 printk(KERN_DEBUG "atkbd.c: Keyboard on %s reports too many keys pressed.\n", serio->phys);
431 code = atkbd_compat_scancode(atkbd, code);
433 if (atkbd->emul && --atkbd->emul)
436 keycode = atkbd->keycode[code];
438 if (keycode != ATKBD_KEY_NULL)
439 input_event(dev, EV_MSC, MSC_SCAN, code);
444 case ATKBD_KEY_UNKNOWN:
446 "atkbd.c: Unknown key %s (%s set %d, code %#x on %s).\n",
447 atkbd->release ? "released" : "pressed",
448 atkbd->translated ? "translated" : "raw",
449 atkbd->set, code, serio->phys);
451 "atkbd.c: Use 'setkeycodes %s%02x <keycode>' to make it known.\n",
452 code & 0x80 ? "e0" : "", code & 0x7f);
456 scroll = 1 - atkbd->release * 2;
459 scroll = 2 - atkbd->release * 4;
462 scroll = 4 - atkbd->release * 8;
465 scroll = 8 - atkbd->release * 16;
467 case ATKBD_SCR_CLICK:
468 click = !atkbd->release;
473 case ATKBD_SCR_RIGHT:
477 if (atkbd->release) {
480 } else if (!atkbd->softrepeat && test_bit(keycode, dev->key)) {
481 /* Workaround Toshiba laptop multiple keypress */
482 value = time_before(jiffies, atkbd->time) && atkbd->last == code ? 1 : 2;
486 atkbd->time = jiffies + msecs_to_jiffies(dev->rep[REP_DELAY]) / 2;
489 input_event(dev, EV_KEY, keycode, value);
492 if (value && test_bit(code, atkbd->force_release_mask)) {
493 input_report_key(dev, keycode, 0);
500 input_report_key(dev, BTN_MIDDLE, click);
501 input_report_rel(dev, REL_WHEEL, scroll);
502 input_report_rel(dev, REL_HWHEEL, hscroll);
511 static int atkbd_set_repeat_rate(struct atkbd *atkbd)
513 const short period[32] =
514 { 33, 37, 42, 46, 50, 54, 58, 63, 67, 75, 83, 92, 100, 109, 116, 125,
515 133, 149, 167, 182, 200, 217, 232, 250, 270, 303, 333, 370, 400, 435, 470, 500 };
516 const short delay[4] =
517 { 250, 500, 750, 1000 };
519 struct input_dev *dev = atkbd->dev;
523 while (i < ARRAY_SIZE(period) - 1 && period[i] < dev->rep[REP_PERIOD])
525 dev->rep[REP_PERIOD] = period[i];
527 while (j < ARRAY_SIZE(delay) - 1 && delay[j] < dev->rep[REP_DELAY])
529 dev->rep[REP_DELAY] = delay[j];
531 param = i | (j << 5);
532 return ps2_command(&atkbd->ps2dev, ¶m, ATKBD_CMD_SETREP);
535 static int atkbd_set_leds(struct atkbd *atkbd)
537 struct input_dev *dev = atkbd->dev;
538 unsigned char param[2];
540 param[0] = (test_bit(LED_SCROLLL, dev->led) ? 1 : 0)
541 | (test_bit(LED_NUML, dev->led) ? 2 : 0)
542 | (test_bit(LED_CAPSL, dev->led) ? 4 : 0);
543 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_SETLEDS))
548 param[1] = (test_bit(LED_COMPOSE, dev->led) ? 0x01 : 0)
549 | (test_bit(LED_SLEEP, dev->led) ? 0x02 : 0)
550 | (test_bit(LED_SUSPEND, dev->led) ? 0x04 : 0)
551 | (test_bit(LED_MISC, dev->led) ? 0x10 : 0)
552 | (test_bit(LED_MUTE, dev->led) ? 0x20 : 0);
553 if (ps2_command(&atkbd->ps2dev, param, ATKBD_CMD_EX_SETLEDS))
561 * atkbd_event_work() is used to complete processing of events that
562 * can not be processed by input_event() which is often called from
566 static void atkbd_event_work(struct work_struct *work)
568 struct atkbd *atkbd = container_of(work, struct atkbd, event_work.work);
570 mutex_lock(&atkbd->event_mutex);
572 if (test_and_clear_bit(ATKBD_LED_EVENT_BIT, &atkbd->event_mask))
573 atkbd_set_leds(atkbd);
575 if (test_and_clear_bit(ATKBD_REP_EVENT_BIT, &atkbd->event_mask))
576 atkbd_set_repeat_rate(atkbd);
578 mutex_unlock(&atkbd->event_mutex);
582 * Schedule switch for execution. We need to throttle requests,
583 * otherwise keyboard may become unresponsive.
585 static void atkbd_schedule_event_work(struct atkbd *atkbd, int event_bit)
587 unsigned long delay = msecs_to_jiffies(50);
589 if (time_after(jiffies, atkbd->event_jiffies + delay))
592 atkbd->event_jiffies = jiffies;
593 set_bit(event_bit, &atkbd->event_mask);
595 schedule_delayed_work(&atkbd->event_work, delay);
599 * Event callback from the input module. Events that change the state of
600 * the hardware are processed here. If action can not be performed in
601 * interrupt context it is offloaded to atkbd_event_work.
604 static int atkbd_event(struct input_dev *dev,
605 unsigned int type, unsigned int code, int value)
607 struct atkbd *atkbd = input_get_drvdata(dev);
615 atkbd_schedule_event_work(atkbd, ATKBD_LED_EVENT_BIT);
619 if (!atkbd->softrepeat)
620 atkbd_schedule_event_work(atkbd, ATKBD_REP_EVENT_BIT);
628 * atkbd_enable() signals that interrupt handler is allowed to
629 * generate input events.
632 static inline void atkbd_enable(struct atkbd *atkbd)
634 serio_pause_rx(atkbd->ps2dev.serio);
636 serio_continue_rx(atkbd->ps2dev.serio);
640 * atkbd_disable() tells input handler that all incoming data except
641 * for ACKs and command response should be dropped.
644 static inline void atkbd_disable(struct atkbd *atkbd)
646 serio_pause_rx(atkbd->ps2dev.serio);
648 serio_continue_rx(atkbd->ps2dev.serio);
652 * atkbd_probe() probes for an AT keyboard on a serio port.
655 static int atkbd_probe(struct atkbd *atkbd)
657 struct ps2dev *ps2dev = &atkbd->ps2dev;
658 unsigned char param[2];
661 * Some systems, where the bit-twiddling when testing the io-lines of the
662 * controller may confuse the keyboard need a full reset of the keyboard. On
663 * these systems the BIOS also usually doesn't do it for us.
667 if (ps2_command(ps2dev, NULL, ATKBD_CMD_RESET_BAT))
668 printk(KERN_WARNING "atkbd.c: keyboard reset failed on %s\n", ps2dev->serio->phys);
671 * Then we check the keyboard ID. We should get 0xab83 under normal conditions.
672 * Some keyboards report different values, but the first byte is always 0xab or
673 * 0xac. Some old AT keyboards don't report anything. If a mouse is connected, this
674 * should make sure we don't try to set the LEDs on it.
677 param[0] = param[1] = 0xa5; /* initialize with invalid values */
678 if (ps2_command(ps2dev, param, ATKBD_CMD_GETID)) {
681 * If the get ID command failed, we check if we can at least set the LEDs on
682 * the keyboard. This should work on every keyboard out there. It also turns
683 * the LEDs off, which we want anyway.
686 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
692 if (!ps2_is_keyboard_id(param[0]))
695 atkbd->id = (param[0] << 8) | param[1];
697 if (atkbd->id == 0xaca1 && atkbd->translated) {
698 printk(KERN_ERR "atkbd.c: NCD terminal keyboards are only supported on non-translating\n");
699 printk(KERN_ERR "atkbd.c: controllers. Use i8042.direct=1 to disable translation.\n");
707 * atkbd_select_set checks if a keyboard has a working Set 3 support, and
708 * sets it into that. Unfortunately there are keyboards that can be switched
709 * to Set 3, but don't work well in that (BTC Multimedia ...)
712 static int atkbd_select_set(struct atkbd *atkbd, int target_set, int allow_extra)
714 struct ps2dev *ps2dev = &atkbd->ps2dev;
715 unsigned char param[2];
719 * For known special keyboards we can go ahead and set the correct set.
720 * We check for NCD PS/2 Sun, NorthGate OmniKey 101 and
721 * IBM RapidAccess / IBM EzButton / Chicony KBP-8993 keyboards.
724 if (atkbd->translated)
727 if (atkbd->id == 0xaca1) {
729 ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET);
735 if (!ps2_command(ps2dev, param, ATKBD_CMD_EX_ENABLE)) {
744 if (!ps2_command(ps2dev, param, ATKBD_CMD_OK_GETID)) {
745 atkbd->id = param[0] << 8 | param[1];
750 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
754 if (ps2_command(ps2dev, param, ATKBD_CMD_GSCANSET))
759 if (ps2_command(ps2dev, param, ATKBD_CMD_SSCANSET))
763 ps2_command(ps2dev, param, ATKBD_CMD_SETALL_MBR);
768 static int atkbd_activate(struct atkbd *atkbd)
770 struct ps2dev *ps2dev = &atkbd->ps2dev;
771 unsigned char param[1];
774 * Set the LEDs to a defined state.
778 if (ps2_command(ps2dev, param, ATKBD_CMD_SETLEDS))
782 * Set autorepeat to fastest possible.
786 if (ps2_command(ps2dev, param, ATKBD_CMD_SETREP))
790 * Enable the keyboard to receive keystrokes.
793 if (ps2_command(ps2dev, NULL, ATKBD_CMD_ENABLE)) {
794 printk(KERN_ERR "atkbd.c: Failed to enable keyboard on %s\n",
795 ps2dev->serio->phys);
803 * atkbd_cleanup() restores the keyboard state so that BIOS is happy after a
807 static void atkbd_cleanup(struct serio *serio)
809 struct atkbd *atkbd = serio_get_drvdata(serio);
810 ps2_command(&atkbd->ps2dev, NULL, ATKBD_CMD_RESET_BAT);
815 * atkbd_disconnect() closes and frees.
818 static void atkbd_disconnect(struct serio *serio)
820 struct atkbd *atkbd = serio_get_drvdata(serio);
822 atkbd_disable(atkbd);
824 /* make sure we don't have a command in flight */
825 flush_scheduled_work();
827 sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
828 input_unregister_device(atkbd->dev);
830 serio_set_drvdata(serio, NULL);
835 * Most special keys (Fn+F?) on Dell Latitudes do not generate release
836 * events so we have to do it ourselves.
838 static void atkbd_latitude_keymap_fixup(struct atkbd *atkbd)
840 const unsigned int forced_release_keys[] = {
841 0x85, 0x86, 0x87, 0x88, 0x89, 0x8a, 0x8b, 0x8f, 0x93,
846 for (i = 0; i < ARRAY_SIZE(forced_release_keys); i++)
847 __set_bit(forced_release_keys[i],
848 atkbd->force_release_mask);
852 * atkbd_set_keycode_table() initializes keyboard's keycode table
853 * according to the selected scancode set
856 static void atkbd_set_keycode_table(struct atkbd *atkbd)
858 unsigned int scancode;
861 memset(atkbd->keycode, 0, sizeof(atkbd->keycode));
862 bitmap_zero(atkbd->force_release_mask, 512);
864 if (atkbd->translated) {
865 for (i = 0; i < 128; i++) {
866 scancode = atkbd_unxlate_table[i];
867 atkbd->keycode[i] = atkbd_set2_keycode[scancode];
868 atkbd->keycode[i | 0x80] = atkbd_set2_keycode[scancode | 0x80];
870 for (j = 0; j < ARRAY_SIZE(atkbd_scroll_keys); j++)
871 if ((scancode | 0x80) == atkbd_scroll_keys[j].set2)
872 atkbd->keycode[i | 0x80] = atkbd_scroll_keys[j].keycode;
874 } else if (atkbd->set == 3) {
875 memcpy(atkbd->keycode, atkbd_set3_keycode, sizeof(atkbd->keycode));
877 memcpy(atkbd->keycode, atkbd_set2_keycode, sizeof(atkbd->keycode));
880 for (i = 0; i < ARRAY_SIZE(atkbd_scroll_keys); i++) {
881 scancode = atkbd_scroll_keys[i].set2;
882 atkbd->keycode[scancode] = atkbd_scroll_keys[i].keycode;
887 * HANGEUL and HANJA keys do not send release events so we need to
888 * generate such events ourselves
890 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANGEUL);
891 atkbd->keycode[scancode] = KEY_HANGEUL;
892 __set_bit(scancode, atkbd->force_release_mask);
894 scancode = atkbd_compat_scancode(atkbd, ATKBD_RET_HANJA);
895 atkbd->keycode[scancode] = KEY_HANJA;
896 __set_bit(scancode, atkbd->force_release_mask);
899 * Perform additional fixups
901 if (atkbd_platform_fixup)
902 atkbd_platform_fixup(atkbd);
906 * atkbd_set_device_attrs() sets up keyboard's input device structure
909 static void atkbd_set_device_attrs(struct atkbd *atkbd)
911 struct input_dev *input_dev = atkbd->dev;
915 snprintf(atkbd->name, sizeof(atkbd->name),
916 "AT Set 2 Extra keyboard");
918 snprintf(atkbd->name, sizeof(atkbd->name),
919 "AT %s Set %d keyboard",
920 atkbd->translated ? "Translated" : "Raw", atkbd->set);
922 snprintf(atkbd->phys, sizeof(atkbd->phys),
923 "%s/input0", atkbd->ps2dev.serio->phys);
925 input_dev->name = atkbd->name;
926 input_dev->phys = atkbd->phys;
927 input_dev->id.bustype = BUS_I8042;
928 input_dev->id.vendor = 0x0001;
929 input_dev->id.product = atkbd->translated ? 1 : atkbd->set;
930 input_dev->id.version = atkbd->id;
931 input_dev->event = atkbd_event;
932 input_dev->dev.parent = &atkbd->ps2dev.serio->dev;
934 input_set_drvdata(input_dev, atkbd);
936 input_dev->evbit[0] = BIT_MASK(EV_KEY) | BIT_MASK(EV_REP) |
940 input_dev->evbit[0] |= BIT_MASK(EV_LED);
941 input_dev->ledbit[0] = BIT_MASK(LED_NUML) |
942 BIT_MASK(LED_CAPSL) | BIT_MASK(LED_SCROLLL);
946 input_dev->ledbit[0] |= BIT_MASK(LED_COMPOSE) |
947 BIT_MASK(LED_SUSPEND) | BIT_MASK(LED_SLEEP) |
948 BIT_MASK(LED_MUTE) | BIT_MASK(LED_MISC);
950 if (!atkbd->softrepeat) {
951 input_dev->rep[REP_DELAY] = 250;
952 input_dev->rep[REP_PERIOD] = 33;
955 input_dev->mscbit[0] = atkbd->softraw ? BIT_MASK(MSC_SCAN) :
956 BIT_MASK(MSC_RAW) | BIT_MASK(MSC_SCAN);
959 input_dev->evbit[0] |= BIT_MASK(EV_REL);
960 input_dev->relbit[0] = BIT_MASK(REL_WHEEL) |
961 BIT_MASK(REL_HWHEEL);
962 set_bit(BTN_MIDDLE, input_dev->keybit);
965 input_dev->keycode = atkbd->keycode;
966 input_dev->keycodesize = sizeof(unsigned char);
967 input_dev->keycodemax = ARRAY_SIZE(atkbd_set2_keycode);
969 for (i = 0; i < 512; i++)
970 if (atkbd->keycode[i] && atkbd->keycode[i] < ATKBD_SPECIAL)
971 set_bit(atkbd->keycode[i], input_dev->keybit);
975 * atkbd_connect() is called when the serio module finds an interface
976 * that isn't handled yet by an appropriate device driver. We check if
977 * there is an AT keyboard out there and if yes, we register ourselves
978 * to the input module.
981 static int atkbd_connect(struct serio *serio, struct serio_driver *drv)
984 struct input_dev *dev;
987 atkbd = kzalloc(sizeof(struct atkbd), GFP_KERNEL);
988 dev = input_allocate_device();
993 ps2_init(&atkbd->ps2dev, serio);
994 INIT_DELAYED_WORK(&atkbd->event_work, atkbd_event_work);
995 mutex_init(&atkbd->event_mutex);
997 switch (serio->id.type) {
1000 atkbd->translated = 1;
1007 atkbd->softraw = atkbd_softraw;
1008 atkbd->softrepeat = atkbd_softrepeat;
1009 atkbd->scroll = atkbd_scroll;
1011 if (atkbd->softrepeat)
1014 serio_set_drvdata(serio, atkbd);
1016 err = serio_open(serio, drv);
1022 if (atkbd_probe(atkbd)) {
1027 atkbd->set = atkbd_select_set(atkbd, atkbd_set, atkbd_extra);
1028 atkbd_activate(atkbd);
1035 atkbd_set_keycode_table(atkbd);
1036 atkbd_set_device_attrs(atkbd);
1038 err = sysfs_create_group(&serio->dev.kobj, &atkbd_attribute_group);
1042 atkbd_enable(atkbd);
1044 err = input_register_device(atkbd->dev);
1050 fail4: sysfs_remove_group(&serio->dev.kobj, &atkbd_attribute_group);
1051 fail3: serio_close(serio);
1052 fail2: serio_set_drvdata(serio, NULL);
1053 fail1: input_free_device(dev);
1059 * atkbd_reconnect() tries to restore keyboard into a sane state and is
1060 * most likely called on resume.
1063 static int atkbd_reconnect(struct serio *serio)
1065 struct atkbd *atkbd = serio_get_drvdata(serio);
1066 struct serio_driver *drv = serio->drv;
1068 if (!atkbd || !drv) {
1069 printk(KERN_DEBUG "atkbd: reconnect request, but serio is disconnected, ignoring...\n");
1073 atkbd_disable(atkbd);
1076 if (atkbd_probe(atkbd))
1078 if (atkbd->set != atkbd_select_set(atkbd, atkbd->set, atkbd->extra))
1081 atkbd_activate(atkbd);
1084 * Restore repeat rate and LEDs (that were reset by atkbd_activate)
1085 * to pre-resume state
1087 if (!atkbd->softrepeat)
1088 atkbd_set_repeat_rate(atkbd);
1089 atkbd_set_leds(atkbd);
1092 atkbd_enable(atkbd);
1097 static struct serio_device_id atkbd_serio_ids[] = {
1105 .type = SERIO_8042_XL,
1111 .type = SERIO_RS232,
1112 .proto = SERIO_PS2SER,
1119 MODULE_DEVICE_TABLE(serio, atkbd_serio_ids);
1121 static struct serio_driver atkbd_drv = {
1125 .description = DRIVER_DESC,
1126 .id_table = atkbd_serio_ids,
1127 .interrupt = atkbd_interrupt,
1128 .connect = atkbd_connect,
1129 .reconnect = atkbd_reconnect,
1130 .disconnect = atkbd_disconnect,
1131 .cleanup = atkbd_cleanup,
1134 static ssize_t atkbd_attr_show_helper(struct device *dev, char *buf,
1135 ssize_t (*handler)(struct atkbd *, char *))
1137 struct serio *serio = to_serio_port(dev);
1140 retval = serio_pin_driver(serio);
1144 if (serio->drv != &atkbd_drv) {
1149 retval = handler((struct atkbd *)serio_get_drvdata(serio), buf);
1152 serio_unpin_driver(serio);
1156 static ssize_t atkbd_attr_set_helper(struct device *dev, const char *buf, size_t count,
1157 ssize_t (*handler)(struct atkbd *, const char *, size_t))
1159 struct serio *serio = to_serio_port(dev);
1160 struct atkbd *atkbd;
1163 retval = serio_pin_driver(serio);
1167 if (serio->drv != &atkbd_drv) {
1172 atkbd = serio_get_drvdata(serio);
1173 atkbd_disable(atkbd);
1174 retval = handler(atkbd, buf, count);
1175 atkbd_enable(atkbd);
1178 serio_unpin_driver(serio);
1182 static ssize_t atkbd_show_extra(struct atkbd *atkbd, char *buf)
1184 return sprintf(buf, "%d\n", atkbd->extra ? 1 : 0);
1187 static ssize_t atkbd_set_extra(struct atkbd *atkbd, const char *buf, size_t count)
1189 struct input_dev *old_dev, *new_dev;
1190 unsigned long value;
1193 unsigned char old_extra, old_set;
1198 value = simple_strtoul(buf, &rest, 10);
1199 if (*rest || value > 1)
1202 if (atkbd->extra != value) {
1204 * Since device's properties will change we need to
1205 * unregister old device. But allocate and register
1206 * new one first to make sure we have it.
1208 old_dev = atkbd->dev;
1209 old_extra = atkbd->extra;
1210 old_set = atkbd->set;
1212 new_dev = input_allocate_device();
1216 atkbd->dev = new_dev;
1217 atkbd->set = atkbd_select_set(atkbd, atkbd->set, value);
1218 atkbd_activate(atkbd);
1219 atkbd_set_keycode_table(atkbd);
1220 atkbd_set_device_attrs(atkbd);
1222 err = input_register_device(atkbd->dev);
1224 input_free_device(new_dev);
1226 atkbd->dev = old_dev;
1227 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1228 atkbd_set_keycode_table(atkbd);
1229 atkbd_set_device_attrs(atkbd);
1233 input_unregister_device(old_dev);
1239 static ssize_t atkbd_show_scroll(struct atkbd *atkbd, char *buf)
1241 return sprintf(buf, "%d\n", atkbd->scroll ? 1 : 0);
1244 static ssize_t atkbd_set_scroll(struct atkbd *atkbd, const char *buf, size_t count)
1246 struct input_dev *old_dev, *new_dev;
1247 unsigned long value;
1250 unsigned char old_scroll;
1252 value = simple_strtoul(buf, &rest, 10);
1253 if (*rest || value > 1)
1256 if (atkbd->scroll != value) {
1257 old_dev = atkbd->dev;
1258 old_scroll = atkbd->scroll;
1260 new_dev = input_allocate_device();
1264 atkbd->dev = new_dev;
1265 atkbd->scroll = value;
1266 atkbd_set_keycode_table(atkbd);
1267 atkbd_set_device_attrs(atkbd);
1269 err = input_register_device(atkbd->dev);
1271 input_free_device(new_dev);
1273 atkbd->scroll = old_scroll;
1274 atkbd->dev = old_dev;
1275 atkbd_set_keycode_table(atkbd);
1276 atkbd_set_device_attrs(atkbd);
1280 input_unregister_device(old_dev);
1285 static ssize_t atkbd_show_set(struct atkbd *atkbd, char *buf)
1287 return sprintf(buf, "%d\n", atkbd->set);
1290 static ssize_t atkbd_set_set(struct atkbd *atkbd, const char *buf, size_t count)
1292 struct input_dev *old_dev, *new_dev;
1293 unsigned long value;
1296 unsigned char old_set, old_extra;
1301 value = simple_strtoul(buf, &rest, 10);
1302 if (*rest || (value != 2 && value != 3))
1305 if (atkbd->set != value) {
1306 old_dev = atkbd->dev;
1307 old_extra = atkbd->extra;
1308 old_set = atkbd->set;
1310 new_dev = input_allocate_device();
1314 atkbd->dev = new_dev;
1315 atkbd->set = atkbd_select_set(atkbd, value, atkbd->extra);
1316 atkbd_activate(atkbd);
1317 atkbd_set_keycode_table(atkbd);
1318 atkbd_set_device_attrs(atkbd);
1320 err = input_register_device(atkbd->dev);
1322 input_free_device(new_dev);
1324 atkbd->dev = old_dev;
1325 atkbd->set = atkbd_select_set(atkbd, old_set, old_extra);
1326 atkbd_set_keycode_table(atkbd);
1327 atkbd_set_device_attrs(atkbd);
1331 input_unregister_device(old_dev);
1336 static ssize_t atkbd_show_softrepeat(struct atkbd *atkbd, char *buf)
1338 return sprintf(buf, "%d\n", atkbd->softrepeat ? 1 : 0);
1341 static ssize_t atkbd_set_softrepeat(struct atkbd *atkbd, const char *buf, size_t count)
1343 struct input_dev *old_dev, *new_dev;
1344 unsigned long value;
1347 unsigned char old_softrepeat, old_softraw;
1352 value = simple_strtoul(buf, &rest, 10);
1353 if (*rest || value > 1)
1356 if (atkbd->softrepeat != value) {
1357 old_dev = atkbd->dev;
1358 old_softrepeat = atkbd->softrepeat;
1359 old_softraw = atkbd->softraw;
1361 new_dev = input_allocate_device();
1365 atkbd->dev = new_dev;
1366 atkbd->softrepeat = value;
1367 if (atkbd->softrepeat)
1369 atkbd_set_device_attrs(atkbd);
1371 err = input_register_device(atkbd->dev);
1373 input_free_device(new_dev);
1375 atkbd->dev = old_dev;
1376 atkbd->softrepeat = old_softrepeat;
1377 atkbd->softraw = old_softraw;
1378 atkbd_set_device_attrs(atkbd);
1382 input_unregister_device(old_dev);
1388 static ssize_t atkbd_show_softraw(struct atkbd *atkbd, char *buf)
1390 return sprintf(buf, "%d\n", atkbd->softraw ? 1 : 0);
1393 static ssize_t atkbd_set_softraw(struct atkbd *atkbd, const char *buf, size_t count)
1395 struct input_dev *old_dev, *new_dev;
1396 unsigned long value;
1399 unsigned char old_softraw;
1401 value = simple_strtoul(buf, &rest, 10);
1402 if (*rest || value > 1)
1405 if (atkbd->softraw != value) {
1406 old_dev = atkbd->dev;
1407 old_softraw = atkbd->softraw;
1409 new_dev = input_allocate_device();
1413 atkbd->dev = new_dev;
1414 atkbd->softraw = value;
1415 atkbd_set_device_attrs(atkbd);
1417 err = input_register_device(atkbd->dev);
1419 input_free_device(new_dev);
1421 atkbd->dev = old_dev;
1422 atkbd->softraw = old_softraw;
1423 atkbd_set_device_attrs(atkbd);
1427 input_unregister_device(old_dev);
1432 static ssize_t atkbd_show_err_count(struct atkbd *atkbd, char *buf)
1434 return sprintf(buf, "%lu\n", atkbd->err_count);
1437 static int __init atkbd_setup_fixup(const struct dmi_system_id *id)
1439 atkbd_platform_fixup = id->driver_data;
1443 static struct dmi_system_id atkbd_dmi_quirk_table[] __initdata = {
1445 .ident = "Dell Latitude series",
1447 DMI_MATCH(DMI_SYS_VENDOR, "Dell Inc."),
1448 DMI_MATCH(DMI_PRODUCT_NAME, "Latitude"),
1450 .callback = atkbd_setup_fixup,
1451 .driver_data = atkbd_latitude_keymap_fixup,
1456 static int __init atkbd_init(void)
1458 dmi_check_system(atkbd_dmi_quirk_table);
1460 return serio_register_driver(&atkbd_drv);
1463 static void __exit atkbd_exit(void)
1465 serio_unregister_driver(&atkbd_drv);
1468 module_init(atkbd_init);
1469 module_exit(atkbd_exit);